CN110537874A - A vacuum cleaner display device and the vacuum cleaner - Google Patents

Abstract

The present invention relates to the field of household appliances, in particular to a display device for a vacuum cleaner. The display device for a vacuum cleaner includes a light-emitting display unit and a drive unit; the light-emitting display unit is arranged on the surface of the vacuum cleaner, and the light-emitting device can emit light when the drive unit provides electric drive; The drive unit receives the first display instruction corresponding to the measured value of the set measurement parameter provided by the controller, generates a corresponding electric drive signal according to the specific value of the first display instruction, and drives the light-emitting The corresponding light-emitting device of the display unit emits light according to the requirements. Compared with the prior art, the effect of displaying the actual measured parameter information of the vacuum cleaner according to the light-emitting state of the light-emitting device is realized, and different dust concentrations can be displayed more accurately and intuitively. It is used to remind the user to carry out reasonable operation control of the vacuum cleaner according to the current dust concentration information.

Description

A vacuum cleaner display device and the vacuum cleaner

technical field

The invention relates to the field of household appliances, in particular to a vacuum cleaner display device and a vacuum cleaner.

Background technique

Vacuum cleaner is a commonly used cleaning tool. Through the rotation of the motor, negative pressure is generated in the airtight casing to absorb dust. The dust is collected in the dust bucket, and the wind is filtered and discharged into the atmosphere. The current vacuum cleaners on the market usually use several LED light modes to display the parameters of the vacuum cleaner in terms of human-computer interaction, such as battery power, power and other parameter information. This kind of human-computer interaction interface is simple, not practical and beautiful, and , the number of states that can be displayed by this method is limited, and only a rough indication can be obtained for parameter information with a large range change, and it cannot remind the user to perform subsequent operations according to the current parameter information of the vacuum cleaner.

In addition, for the dust concentration parameter information, there is basically no device for displaying the dust concentration parameter information on the existing vacuum cleaner. Instead, a dust-full indicator LED light is set in the vacuum cleaner. When the dust bucket of the vacuum cleaner is saturated with dust, an alarm signal will be sent to remind the user to replace the dust bucket. However, when the vacuum cleaner is in use, the user usually needs to know the change of the dust concentration in the cleaning environment when the dust bucket is saturated. Therefore, a display device capable of displaying different dust concentrations is required.

Contents of the invention

The invention provides a vacuum cleaner display device, which is used to solve the technical problem of how to display different dust concentrations when the vacuum cleaner is in use in the prior art.

The present invention provides a vacuum cleaner display device, which is applied to a vacuum cleaner, and the vacuum cleaner has a controller, and is characterized in that the vacuum cleaner display device includes a light-emitting display unit and a drive unit;

The light-emitting display unit is arranged on the surface of the vacuum cleaner, and the light-emitting device included in the light-emitting display unit can emit light when the drive unit provides electric drive; through one or several factors of the light-emitting quantity, light-emitting position and light-emitting mode of the light-emitting device, The light-emitting display unit provides corresponding display information to the outside;

The drive unit receives the first display instruction corresponding to the measured value of the set measurement parameter provided by the controller, generates a corresponding electric drive signal according to the specific value of the first display instruction, and drives the light-emitting The corresponding light emitting devices of the display unit emit light as required.

Optionally, the light-emitting display unit is composed of a plurality of light-emitting devices arranged in a set order, the light-emitting devices are LED lights, and the set order is at least one of the following forms: geometric shape distribution, character arrangement Cloth, pattern.

Optionally, the LED lights distributed in a geometric shape are arranged in a circular shape, and the LED lights arranged in a circular shape include two colors arranged alternately or side by side.

Optionally, according to the area size of the circularly arranged LED lamps, a circular light-transmitting cover plate of a corresponding size is provided.

Optionally, the light-emitting display unit is used to display dust concentration information; the corresponding light-emitting device that drives the light-emitting display unit emits light according to requirements, specifically according to the specific value reflecting the dust concentration provided by the first display instruction, as follows way to display:

When the dust concentration is less than or equal to the minimum threshold, all the light-emitting devices of the first color are turned on, and all the light-emitting devices of the second color are turned off;

When the dust concentration is greater than or equal to the highest threshold, all the light-emitting devices of the first color are turned off, and all the light-emitting devices of the second color are turned on;

When the dust concentration is between the lowest threshold and the highest threshold, light up the light-emitting device in the following manner: starting from the starting point set by the circle, according to the size of the specific value, light up the second color light-emitting device of the corresponding arc in proportion ; Light up the light-emitting device of the first color in the remaining arc range.

Optionally, a display screen is provided; the display screen is provided with a battery power display part, and according to the remaining battery power value provided by the power management element of the vacuum cleaner, the battery power display part displays a number representing the remaining battery power.

Optionally, the battery level display part includes displaying a battery icon.

Optionally, a power display part for displaying power is provided on the display screen; the power display part displays the working power of the vacuum motor.

Optionally, the power display part uses vertical lines or dots at equal intervals between the set start position and the end position to identify the working power of the vacuum motor; at maximum power, the start position and end point All the vertical lines or dots between the positions are displayed; under other powers, according to the power level, a corresponding number of vertical lines or dots are displayed from the start position to the end position.

Optionally, a display screen is provided, and a fault display part is provided on the display screen, and the fault display part is used to represent the fault information of the roller brush, the dust suction channel and the dust sensor.

Optionally, a display screen is provided, and a communication display part is provided on the display screen, and the communication display part is used to represent the communication information between the display device, the vacuum cleaner and the smart terminal, and the communication mode of the communication information is wired or wireless .

The present invention also provides a vacuum cleaner using the above-mentioned vacuum cleaner display device.

Compared with the prior art, one or more technical solutions provided by the embodiments of the present application have at least the following advantages:

The vacuum cleaner display device provided in the embodiment of the present application adopts the light emitting devices arranged in a set order, and provides the first display instruction corresponding to the measured value of the set measurement parameter through the controller, so that the driving unit drives the light emitting device according to It is required to emit light, which realizes the effect of displaying the actually measured parameter information of the vacuum cleaner according to the light-emitting state of the light-emitting device. Due to the control of the first display command, the number of display states of the light-emitting device assembly is expanded, thereby expanding the control of the vacuum cleaner. The display range of parameter information, when applied to the display of dust concentration, can display different dust concentrations more accurately and intuitively, and is used to remind users to perform reasonable operation and control of the vacuum cleaner according to the current dust concentration information.

Description of drawings

Fig. 1 is the logic block diagram among each system of vacuum cleaner of the present application;

Fig. 2 is a logical block diagram between some modules inside the vacuum cleaner of the present application;

Fig. 3 is the logical block diagram of the display device of the vacuum cleaner of the present application;

Fig. 4 is a schematic diagram of the display device of the vacuum cleaner of the present application when displaying information;

Fig. 5 is an enlarged view of part B in Fig. 4;

6 is a schematic circuit diagram of a dust detection device according to an embodiment of the present application;

Fig. 7 is the sectional view of the installation structure of the transmitter and receiver of the present application;

Fig. 8 is the schematic diagram of detecting dust by the dust detection device of the present application;

Fig. 9 is a schematic diagram of the scraping mechanism of the dust detection device of the present application;

Fig. 10 is the circuit schematic diagram of the transparent window of the present application;

Fig. 11 is a logic block diagram of the vacuum cleaner air pressure detection and protection system of the present application;

Fig. 12 is the flowchart of the application controller work;

Fig. 13 is a logic block diagram of the vacuum cleaner speed control system of the present application;

Fig. 14 is a schematic structural diagram of the touch sensing part of the present application;

Fig. 15 is a schematic structural diagram of the touch panel of the present application;

FIG. 16 is a schematic diagram of the positional relationship between the touch sensor and the touch panel of the present application;

Fig. 17 is the front view of the vacuum cleaner of the present application;

Fig. 18 is a flow chart of the method for adjusting the power of the vacuum cleaner dust-absorbing motor in the present application;

Fig. 19 is a flow chart of the method for improving the accuracy of the dust detection sensor in the present application;

FIG. 20 is a flow chart of a specific method for adjusting the electric drive VT in a function fitting manner;

Fig. 21 is a flow chart of determining the electric drive VT of the present application;

FIG. 22 is another flow chart for determining the electric drive VT of the present application.

Detailed ways

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar promotions without violating the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

Please refer to Figure 1 and Figure 2, Figure 1 is a logical block diagram between the various systems of the vacuum cleaner of the present application; Figure 2 is a logical block diagram of some internal modules of the vacuum cleaner of the present application;

The present application provides a handheld vacuum cleaner, including: a vacuum cleaner display system 100 , a dust detection system 200 , an air pressure detection and protection system 300 , a speed control system 400 , a motor drive system 500 and a control system 600 . Among the above systems, the control system 600 has a control and information feedback relationship with other systems. Therefore, there may be some overlapping and combined parts between other systems and the control system.

The vacuum cleaner display system 100 includes: the part related to display control in the controller in the control system 600, and the vacuum cleaner display device 110; the vacuum cleaner display device 110 includes a light-emitting display unit 111, a drive unit 112; a battery power display part 113, a power display part 114 and display screen 115;

Dust detection system 200 comprises: the part relevant to dust detection control in the controller in the control system 600, and dust detection device 210; Dust detection device 210 comprises: sensor 211, transparent window 212, sensor circuit 213, motor module 214, hanger Bar 215 and hanging bar baffle 216.

The control system 600 includes: a controller 610 and a converter 620 . The controller 610 can be realized by using an MCU control chip plus relevant peripheral circuits. The printed circuit board where the MCU control chip is located can be called the main control board. Note that in the description of this embodiment, the controller 610 is used to refer to the above slightly different concepts.

The air pressure detection and protection system 300 includes: an air pressure detection module 310 , a comparator 320 , a first controller 611 in the controller 610 for controlling the air pressure, and a first converter 621 in the converter 620 for controlling the air pressure.

The speed regulation control system 400 includes: a touch sensor 410, a power control device 420, a touch panel 430, a second controller 612 in the controller 610 for controlling power, and a second converter 622 for controlling power in the converter;

The motor drive system 500 includes: a power switch button 510 , a battery pack 520 , a vacuum motor 530 and a floor brush motor 540 .

Wherein, the controller 610 is provided with a trigger circuit, and after the user turns on the power switch button, the trigger circuit activates the battery signal, and the battery pack 520 is activated.

The controller 610 has a data interface with the vacuum cleaner display device 110 , the battery pack 520 , the vacuum motor 530 , the ground brush motor 540 , and the power control device 420 , and communicates through the data interface.

The battery pack 520 provides electric power for the vacuum motor 530, the floor brush motor 540 and the power control device 420. There is an interface protocol between the battery pack 520 and the controller 610. The interface protocol adopts an open protocol, which is sufficient for communication with the controller 610. The inside of the battery pack 520 can be freely designed, and the battery pack 520 can adopt battery packs of different manufacturers or different types of battery packs, and change the shape of the battery pack according to vacuum cleaners of different shapes; after the controller 610 obtains the power information of the battery pack, it will The battery level information is processed accordingly and transmitted to the display device 110 of the vacuum cleaner, and displayed by the battery level display part 113 of the display device 110 of the vacuum cleaner.

The power control device 420 is connected to the controller 610 through a data interface. After the controller 610 obtains the power information of the vacuum cleaner, it transmits the motor power information of the vacuum cleaner motor 530 to the vacuum cleaner display device 110, and the power display unit 114 of the vacuum cleaner display device 110 to display. The interface protocol also adopts an open protocol, which is enough to communicate with the controller 610 . Unless otherwise specified, the interface protocols appearing below all have the same meaning.

The vacuum cleaner display system 100 of the present application will be introduced below. As mentioned above, the vacuum cleaner display system 100 includes a part related to display control in the vacuum cleaner controller and a display device 110 . The following mainly introduces the display device 110 .

Please refer to Figure 3, Figure 4, and Figure 5, Figure 3 is a logic block diagram of the vacuum cleaner display device of the present application; Figure 4 is a schematic diagram of the vacuum cleaner display device displaying information; Figure 5 is an enlarged view of position B in Figure 4.

The vacuum cleaner display device provided by this application is applied to a vacuum cleaner to display parameter information when the vacuum cleaner is working. The parameter information of the vacuum cleaner can be power information, battery power information, communication information, fault information or dust concentration information. one or several. The vacuum cleaner display device is generally installed on a surface that is easy to observe when the vacuum cleaner is working, such as an upward surface, so that the user can know the changes of the parameter information at any time when using the vacuum cleaner, so as to make an effective judgment on the use status of the vacuum cleaner. According to different shapes of the vacuum cleaner, the appearance of the display device of the vacuum cleaner can be set to a corresponding shape, such as a circle, a rectangle or a heart shape, without limitation.

In this embodiment, the vacuum cleaner display device 110 at least includes: a light-emitting display unit 111, a drive unit 112; Display part (not shown) and fault display part (not shown). The light-emitting display unit 111 can be set independently or integrated with the display screen 115. In some preferred embodiments, the light-emitting display unit 111 and the display screen 115 are integrated display devices, and the display device can be selected from Any kind of display device such as LED lights, LCD, OLED, and displays with touch functions. Of course, according to the specific requirements of different types of vacuum cleaners, according to the parameter information to be displayed, the light-emitting display unit 111, the battery power display part 113, the communication display part (not shown) and the fault display part (not shown) or power can be selected. One or more of the display parts 114, other partial components are omitted.

In this embodiment, the communication display part is used to display the communication state of the display device, and different communication states are displayed with different patterns; this communication can be wired communication or wireless communication; specifically, it can be a display The communication between the device and the vacuum cleaner may also be the communication between the display device and the smart terminal. The fault display part is used to display the fault information of the vacuum cleaner. This fault information can be any fault information that occurs during the operation of the vacuum cleaner, including fault information such as roller brush stall, dust suction pipe blockage, dust sensor fault, etc. Different Fault messages can be displayed with different characters and/or patterns.

Wherein, the light-emitting display unit 111 is used to display the dust concentration information of the vacuum cleaner; the drive unit 112 is used to receive the first display instruction corresponding to the set measurement parameter measurement value from the controller 610, and send the light-emitting display unit 111 provides a driving signal, so that the light-emitting display unit 111 presents different light-emitting states according to the specific value of the first display instruction, so as to display the dust concentration information.

The battery power display part 113 is used to display the battery power information of the current status of the vacuum cleaner; the power display part 114 is used to display the current power information of the vacuum cleaner motor 530 . The display screen 115 and the controller 610 have an interface protocol. After the interface protocol is defined, screens of different models, manufacturers or shapes can be applied to the vacuum cleaner display device 110 in the embodiment of the present application.

The light-emitting display unit 111 is composed of a plurality of light-emitting devices arranged in a set order, and is arranged on the surface of the vacuum cleaner. Since the display content of the light-emitting display unit 111 is relatively conspicuous, it is generally used to display the most concerned dust concentration information. to display other information.

Wherein, the light emitting device may be a plurality of LED (light emitting diode is an abbreviation, that is, light emitting diode) lights, and the arrangement of the light emitting devices according to a set order means that the light emitting devices are arranged according to a certain shape and order, specifically It can be one of geometric shape distribution, character arrangement or pattern, and a typical arrangement of geometric shape distribution is that multiple LEDs are arranged in a circular shape.

In the embodiment of the present application, the light-emitting devices are LEDs and the like, and the setting order of the light-emitting devices is circular arrangement as an example for description. The LED lights may include two colors arranged alternately or side by side. For example, the LED lights are red and blue two-color lights; in this embodiment, the LED lights are used to display the dust concentration information of the vacuum cleaner. At any time when the vacuum cleaner is working, each LED light displays a color, and all LED lights Corresponding to the detection result of the dust state, as the working time of the vacuum cleaner increases, the amount of dust changes, and the light-emitting display unit 111 displays the change of the dust concentration, thereby reminding the user to perform corresponding actions in different states according to the effect of the display when using the vacuum cleaner. operate.

The light emitting device can emit light when the driving unit 112 provides electric driving (current or voltage). According to one or several factors of the number of lights emitted by the light-emitting device, the position of light-emitting light, and the way of light-emitting light, the light-emitting display unit 111 provides corresponding display information to the outside; in this embodiment, it provides dust concentration information.

The drive unit 112 receives the first display instruction corresponding to the measured value of the set measurement parameter provided by the controller 610, and generates a corresponding electric drive signal according to the specific value of the first display instruction, that is, a suitable The corresponding current or voltage of the light-emitting display unit 111 is driven to emit light as required. That is, the controller 610 forms a corresponding first display command according to the dust concentration detection value provided by the dust detection system 200, and the drive unit 112 generates a suitable value according to the value of the first display command. A certain current or voltage drives the light-emitting devices with appropriate quantity, color and position to emit light, so as to provide the user with detection information of dust concentration. In this embodiment, it is taken that the light emitting display unit 111 includes light emitting devices of two colors as an example, wherein the more light emitting devices of the first color are lit, the lower the dust concentration; the more light emitting devices of the second color are lit , indicating a higher dust concentration.

In the following, it is assumed that the light-emitting device of the light-emitting display unit adopts LED lights arranged in a circular shape, and has two colors, such as red and green, and the LED lights of the two colors are arranged alternately or side by side. In the case of using the light-emitting display unit of the above form, the specific display manner of using this light-emitting display unit to display the dust concentration will be described below; please also refer to FIG. 4 .

When the dust concentration is less than or equal to the minimum threshold, all the light-emitting devices of the first color are turned on, and all the light-emitting devices of the second color are turned off, see the situation shown in A1; the minimum threshold is set for the vacuum cleaner according to the working environment of the vacuum cleaner Threshold value, this value reflects the situation that the dust concentration is very low; if the dust concentration is lower than this threshold value, the vacuum cleaner works in a very clean state, and the dust collection motor can run at the lowest power or speed.

When the dust concentration is greater than or equal to the highest threshold, all the light-emitting devices of the first color are turned off, and all the light-emitting devices of the second color are turned on, see the situation shown in A2; the highest threshold is set for the vacuum cleaner according to the working environment of the vacuum cleaner Threshold, this value reflects the situation that the dust concentration is very high; if the dust concentration is higher than this threshold, the vacuum cleaner is working in a state with a lot of dust, and the vacuum motor should run at the maximum power or maximum speed. At this time, all the light emitting devices of the second color are turned on, which can prompt the user to take measures.

When the dust concentration is between the lowest threshold and the highest threshold, light up the light-emitting device in the following manner: starting from the starting point set by the circle, according to the size of the specific value, light up the second color light-emitting device of the corresponding arc in proportion ; The light-emitting device of the first color is lighted in the remaining arc range, see the situation shown in A3.

In another optional embodiment, the LED light of the light-emitting device displays the dust concentration in the form of a monochromatic light, specifically:

When the dust concentration is less than or equal to the minimum threshold, all light-emitting devices of the first color are extinguished, see the situation shown in A1;

When the dust concentration is between the lowest threshold and the highest threshold, according to the specific value of the first display command, the number of light-emitting devices of the first color will light up, and the dust concentration will be displayed in the form of an arc light strip, see the situation shown in A3 ; The arc range of the arc-shaped light strip indicates the size of the dust concentration.

When the dust concentration is greater than or equal to the highest threshold, all the light-emitting devices of the first color are turned on, and the dust concentration is displayed in the form of a ring light strip, see the situation shown in A2.

In yet another optional implementation, the LED light displays the dust concentration in the form of a two-color light, specifically:

When the dust concentration is less than or equal to the minimum threshold, all the light-emitting devices of the first color are turned on, and all the light-emitting devices of the second color are turned off, see the situation shown in A1;

When the dust concentration is greater than or equal to the highest threshold, all the light-emitting devices of the first color are turned off, and all the light-emitting devices of the second color are turned on, see the situation shown in A2;

When the dust concentration is between the lowest threshold and the highest threshold, light up the light-emitting device in the following manner: starting from the starting point set by the circle, according to the size of the specific value, light up the second color light-emitting device of the corresponding arc in proportion ; The remaining arc range lights up the light-emitting devices of the first color, and the light-emitting devices of the first color and the light-emitting devices of the second color cross a certain number of light-emitting devices for overlapping display, showing the effect of color gradients, see the situation shown in A4.

In yet another optional implementation, the LED light displays the dust concentration in the form of a two-color light, specifically:

When the dust concentration is less than or equal to the set threshold, all the light-emitting devices of the first color are turned on or the light-emitting devices of the first color display in a breathing state (that is, flashing display), and all the light-emitting devices of the second color are extinguished;

When the dust concentration is greater than or equal to the set threshold, the light emitting devices of the second color are all turned on or the light emitting devices of the second color display in a breathing state (that is, flashing display), and the light emitting devices of the first color are all turned off.

The working status of the display device of the vacuum cleaner in the embodiment of the present application is that the user presses the power switch button, starts the trigger circuit, and gives a signal to start the battery. The voltage drives the light-emitting display unit 111 to emit light, and the light-emitting display unit 111 displays the current dust concentration corresponding to the light-emitting state when the power is turned on; as the inhaled dust concentration changes, the controller receives the changed dust concentration information and performs corresponding After processing, the drive unit 112 receives the first display instruction, and performs corresponding light emission according to any one of the above-mentioned light emitting modes, and the light emitting display unit 111 displays the changing dust concentration corresponding to the light emitting state at this time.

The vacuum cleaner display device 110 provided by the embodiment of the present application adopts the light emitter components arranged in a set order, and provides the first display instruction corresponding to the set measurement parameters through the controller, so that the driving unit drives the light emitting device according to the requirements. Lighting realizes the effect of displaying the actually measured parameter information of the vacuum cleaner according to the light-emitting state of the light-emitting device assembly. Due to the control of the first display command, the number of display states of the light-emitting device assembly is expanded, thereby expanding the control of the vacuum cleaner. The display range of parameter information, when applied to the display of dust concentration, can display different dust concentrations, which is used to remind the user to perform subsequent operation control on the vacuum cleaner according to the current dust concentration information.

In addition to the light-emitting display unit 111, the display device 110 may also include a display screen 115. In this embodiment, the display screen 115 is arranged at the central position of the circularly arranged LED lights; the display Relevant display items can be set on the screen 115 as required. In this embodiment, the display screen 115 is provided with a battery power display part 113, a power display part 115, a communication display part (not shown) and a fault display part ( not shown). Under the prior art, the display screen 115 can be implemented in various ways, for example, by using an LCD liquid crystal screen, an OEDL display screen or other display screens with touch functions.

The battery power display part 113 displays a number representing the remaining battery power according to the remaining battery power value provided by the power management element of the vacuum cleaner. Specifically, during the discharge or charging process of the wireless vacuum cleaner, the battery pack 520 communicates with the controller 610 in real time. The display drive information of the battery power is provided to the display screen 115, and finally the display screen 115 performs corresponding display according to the display drive information, displays the remaining power of the battery pack 520 in real time, and displays the power in the form of a percentage, and the display range is 0-100 .

Optionally, the battery power display part 113 includes a battery icon 113-1. When the power is greater than a specific value, the battery icon 113-1 turns into a specific color (such as green), indicating that the power is sufficient; When a specific value is reached, the battery icon 113-1 turns into another specific color (such as red), indicating that the battery is insufficient and reminding the user to charge.

Please refer to FIG. 5 , which shows the power display part 114 provided on the display screen 115 to display the power; the power display part 114 performs corresponding display according to the working power of the motor of the vacuum cleaner. The power display part 114 uses vertical lines or dots at equal intervals between the set start position and the end position to identify the size of the working power of the vacuum cleaner motor; at maximum power, the distance between the start position and the end position All vertical lines or dots are displayed; under other powers, a corresponding number of vertical lines or dots are displayed from the start position to the end position according to the power.

Specifically, a small power icon is placed on the left side of the display screen 115, a high power icon is placed on the right side, and a power bar is placed in the middle. Size and power icons can place any icon, as long as it represents the size of the power. The power bar in the middle can use any line, dot, pattern or other, it is fine.

Here are a few possible ways to display:

①When the power is at the minimum, the small power icon is displayed, and the others are not displayed.

②When the power is minimum, the small power icon is displayed plus one or several power bars are displayed, and the others are not displayed.

③When the power increases, the power bar icon will increase the display length synchronously with the power of the machine, and the others will not be displayed.

④ When the power increases, the displayed power bar will correspond to the current power of the machine, and the others will not be displayed.

⑤ When the power is at its maximum, the power bar will be displayed in full, the high power icon will be displayed, and the others will not be displayed.

⑥When the power is at its maximum, the high power icon will be displayed, and the others will not be displayed.

Corresponding to the above-mentioned light-emitting display unit 111 formed by circular LEDs and the scheme of setting a display screen 115 in the center of the display device 110, a circular light-transmitting cover plate of a corresponding size can be provided according to the area size of the LED lights arranged in a circular shape. , so as to protect the display device 110 .

In another embodiment of the present invention, the display device 110 includes a drive unit 112 and a display screen 115, and the display screen 115 is an integrally designed display, which simultaneously displays power information, battery power information, communication information, fault information or One or more of the dust concentration information, the drive unit 112 is used to drive the display to display the corresponding information. In this embodiment, the display screen 115 is a liquid crystal display or an OLED display, and the drive unit 112 responds to signals from the vacuum cleaner control system and outputs corresponding signals to the display screen 115. The display screen 115 displays power information, battery power information, communication information, One or more of fault information and dust concentration information. Combined with the vacuum cleaner, the display device 110 can be arranged on the top of the dust bucket of the vacuum cleaner and the cyclone separator, and its drive unit 112 is connected with the vacuum cleaner control system by wired communication, using a circular display screen. This display device has better display effect and improves the vacuum cleaner. user experience.

The vacuum cleaner display device provided in this embodiment has the following beneficial effects:

The light emitter components arranged according to the set order are adopted, and the first display instruction corresponding to the set measurement parameters is provided by the controller, so that the drive unit drives the light emitting device to emit light according to the requirements, and the light emitting state according to the light emitter components is realized. The effect of displaying the actual measured parameter information of the vacuum cleaner, because the number of display states of the light emitter assembly is expanded through the control of the first display command, and then the display range of the vacuum cleaner parameter information is expanded, and it is applied to the dust concentration. When displayed, different dust concentrations can be displayed to remind the user to perform subsequent operation control on the vacuum cleaner according to the current dust concentration information.

The following describes the dust detection system 200 of the present application. As mentioned above, the dust detection system 200 includes the part of the controller in the control system 600 related to dust detection control, and the dust detection device 210 .

In this embodiment, the vacuum cleaner includes a dust detection device 210 , a main control board, a dust bucket, an air duct, and an adapter connecting the dust bucket and the air duct. The dust detection device includes a sensor 211 , a transparent window 212 and a sensor circuit 213 . The sensor includes: a transmitter 211-1 and a receiver 211-2, the transmitter 211-1 and the receiver 211-2 are symmetrically arranged in the transfer tube, the transmitter 211-1 and the receiver The light path passing through the transfer tube is formed between the receivers 211-2; the transparent window 212 is arranged on the tube wall part where the light path passes through the transfer tube; the sensor 211 passes through the sensor circuit 213 transmits the obtained detection signal to the main control board; the main control board calculates the dust condition according to the detection signal.

Please refer to Fig. 6, Fig. 7 and Fig. 8; Fig. 6 is a schematic circuit diagram of the dust detection device of the embodiment of the present application; Fig. 7 is a schematic diagram of the installation structure of the transmitter and receiver of this embodiment; Fig. 8 is a dust detection device for detecting dust schematic diagram;

Please refer to FIG. 2 , FIG. 6 and FIG. 7 , the dust detection device 210 includes: a sensor 211 , a transparent window 212 and a sensor circuit 213 .

As shown in Figure 7, the sensor 211 is arranged in the transfer pipe connecting the air duct pipe and the dust bucket, and the number of transparent windows 212 is two, which are respectively embedded on the pipe wall of the transfer pipe, and the shape of the transfer pipe is semicircle shape, one of the transparent windows 212 is engaged on the vertical tube wall of the semicircular transfer tube, and the other transparent window 212 is set on the arc tube wall of the transfer tube, and a part of the tube wall faces outwards on the arc tube wall Protrude to form an opening, and the transparent window 212 stretches into the opening to fix, and the sensor 211 is near the position of the dust suction port for detecting the amount of dust; the sensor 211 includes: a transmitter 211-1 and a receiver 211-2, and the transmitter 211 -1 and the receiver 211-2 are arranged symmetrically on the channel through which the dust flows, and a light path passing through the transfer tube is formed between the emitter 211-1 and the receiver 211-2; the transparent window 212 is arranged on the The light path passes through the tube wall part of the transfer tube, and the transparent window 212 made of transparent material can allow the light beam emitted by the transmitter 211-1 to pass through effectively and be received by the receiver 211-2.

The transfer pipe can be set to have a pipe wall part protruding into the dust bucket or the air duct pipe, and correspondingly, the sensor 211 can be arranged on the dust bucket or the air duct pipe corresponding to the pipe wall part. on the tube wall.

The transmitter 211-1 and the receiver 211-2 are connected to the controller 610 through the sensor circuit 213, and the main control board (hereinafter referred to as the main control board) included in the controller 610 is respectively provided with a reference signal input terminal, a transmitter control terminal and The detection signal input terminal, the transmitter 211-1 is connected to the transmitter control terminal signal, the receiver 211-2 is connected to the reference signal input terminal, and the receiver 211-2 is also connected to the detection signal input terminal signal of the main control board through the sensor circuit 213 connect.

When detecting the amount of dust, the receiver 211-2 receives the light signal sent by the transmitter 211-1, and outputs a detection signal corresponding to the amount of received light. The detection signal of the receiver 211-2 becomes a pulse or a square wave after passing through the sensor circuit 213, and is input to the main control board through the detection signal input terminal. According to the number of pulses or square waves detected by the main control board, the amount of dust can be known, that is, the more the number of pulses, the more the amount of dust, and the less the number of pulses, the less the amount of dust. In addition, the larger the dust particle size, the wider the pulse width, and the smaller the dust particle size, the smaller the pulse width.

The preset value of the electrical signal is preset in the main control board, and the preset value of the electrical signal is a reference voltage value, which can also be represented by current, light intensity, or pulse. The setting of the reference voltage value is related to the sensitivity of the sensor 211, specifically The way to determine is to obtain by detecting the detection signal of the receiver 211-2 under the calibration environment. The calibration environment is a normal environment where the vacuum cleaner is not working and the environment is relatively clean.

The adjustment of the sensitivity of the dust detection device will be described below.

Please refer to FIG. 8 , under normal circumstances, during the vacuuming process, when dust flows through the dust passage, part of the light emitted by the transmitter 211-1 is blocked by the dust, and the amount of light received by the receiver 211-2 will decrease. The detection signal of the receiver 211-2 is input to the main control board through the reference signal input terminal, and the main control board receives normal electrical signal values.

In the process of dust detection, if there is dust attached to the surface of the emitter 211-1, before the light emitted by the emitter 211-1 reaches the dust surface in the dust channel, part of the light is attached to the surface of the emitter 211-1. Dust is blocked, causing the amount of light received by the receiver 211-2 to decrease compared to normal conditions.

The way to adjust the sensitivity of the sensor is to set a preset value in the main control board, and the main control board compares the electrical signal value received by the reference signal input end with the preset value in the main control board, and according to the two According to the comparison result of the transmitter, adjust the power supply to the control terminal of the transmitter 211-1 to adjust the luminous intensity of the transmitter 211-1 until the electrical signal value obtained by the reference signal input terminal is consistent with the preset value The difference between is within a predetermined threshold. There are many specific adjustment methods, and this embodiment provides a specific implementation solution, see the subsequent part for details.

The threshold range is reasonably set according to the size of dust particles and the amount of dust corresponding to different situations in the working environment of the vacuum cleaner, and the adjustment of the luminous intensity of the emitter 211-1 is specifically by adjusting the driving voltage of the emitter 211-1. Implements increasing or decreasing luminous intensity.

Optionally, the setting of the preset value can be adjusted according to the requirements of the environment before the vacuuming operation. In addition, the preset value can also be calibrated in real time during the vacuuming operation, as explained below:

The main control board calibrates the preset value according to the detection signal obtained from the detection signal input terminal and according to the dust particle value or the dust concentration value, so that the preset value is close to or identical to the analog signal value.

Optionally, the main control board obtains the dust concentration value in the following manner: the dust concentration value is calculated according to the number of square waves per unit time in the detection signal.

Optionally, the main control board calculates the size of the dust particles by counting the width of the square wave appearing in the detection signal.

Optionally, as shown in FIG. 6, the dust detection device 210 also includes: a motor module 214, the motor module 214 is connected to the motor control output port of the controller 610, and according to the given value provided by the motor control output port Adjust the power of the vacuum motor or the speed of the motor; after the main control board calculates the dust condition according to the detection signal, it substitutes the obtained dust condition into the given value calculation method set inside it to obtain the control of the vacuum motor. The reference value provided by the output port.

The above dust detection device includes a transparent window 212, the transparent window 212 provides a passing path between the transmitter 211-1 and the receiver 211-2 of the sensor 211, and realizes the measurement of the dust concentration at the position of the transfer pipe But because the vacuum cleaner works in a dusty environment, the transparent window 212 is soon contaminated with dust during the use of the vacuum cleaner, and the transparency drops rapidly, so that the dust detection device cannot accurately measure the dust condition. In order to solve the above problems, in this implementation, a special scraper is also arranged on the transparent window 212 for cleaning the transparent window 212.

Please refer to FIG. 9 , which is a schematic diagram of the scraper mechanism of the dust detection device of the present application.

The scraper mechanism includes: a scraper 215 and a scraper baffle 216, the scraper 216 is fixed at both ends of the transparent window 212, and the scraper 215 is arranged between the scraper baffle 216 , and can move between the scraper baffles 216 in a manner that adheres to the surface of the transparent window 212; Both sides are provided with scraping strips 215 .

Correspondingly, in order to drive the scraper 215, the scraper mechanism also includes a scraper motor (not shown), and a scraper motor control unit (not shown); the rotation of the scraper motor passes through the mechanical The mechanism drives the movement of the scraper; the scraper motor control unit is used to control the rotation of the scraper motor.

The rotation of the scraper motor includes forward rotation and reverse rotation, and the forward rotation and reverse rotation can be converted into leftward and rightward movements of the scraper 215 through the mechanical mechanism. The scraper motor and its mechanical structure can be realized in multiple ways; for example, the scraper motor can adopt a commonly used small DC motor, and the mechanical mechanism can use a small lead screw; the scraper 215 One end is provided with an internally threaded hole that fits the lead screw, and as the lead screw is rotated by the scraper motor, it moves along the axis of the lead screw, thereby realizing the movement of the scraper 215 to fit the surface of the transparent window 212 ; When the scraper motor changes the direction of rotation, the scraper 215 can move in the opposite direction. Certainly, there are many possible technical solutions for realizing the movement of the scraper 215 driven by the scraper motor, which will not be introduced in detail here.

Optionally, the scraper motor control unit includes a circuit for supplying power to the scraper motor, and a control program for controlling the circuit on the main control board; Therefore, the power supply circuit can use an H-bridge circuit that is easy to change the power supply direction of the DC motor, as shown in Figure 10. The controller 610 controls the start and stop, forward rotation and reverse rotation of the scraper motor by controlling the conduction and conduction direction of the H-bridge circuit.

Please refer to FIG. 10 , which is a schematic diagram of the control circuit of the transparent window scraping mechanism of the present application; the circuit principle of wiping the transparent window will be described below.

The main body of the control circuit of the scraper mechanism is an H-bridge circuit; the circuit is composed of four silicon controlled rectifiers or high-power triodes Q1, Q2, Q3 and Q4.

When Q1 and Q4 are turned on and Q2 and Q3 are turned off, the scraper motor rotates forward. When Q1 and Q4 are turned off and Q2 and Q3 are turned on, the scraper motor rotates in reverse. The control of Q1-Q4 is realized through the control voltage output from the output port of the control terminal of the main control board, and how the output port outputs the control voltage is realized through an internal control program.

A hanging strip baffle plate 216 is respectively installed in the both sides of transparent window 212 and is used for limiting, and when the scraping strip motor of motor control rotates forward, scraping strip 215 moves to one direction, for example, moves from left to right, because scraping strip The bottom surface of 215 fits on the transparent window 212, and the scraper 215 begins to clean the dirt on the surface of the transparent window 212. When the scraper 215 hits the hanging bar baffle 216, the scraper 215 is blocked, and the scraper motor The rotation is blocked, resulting in a significant increase in the current through the resistor R1. At this time, when the main control board detects that the current through the resistor R1 increases, it will switch the direction of the scraper motor according to the setting of the internal control program, so that the The scraping strip 215 moves in the opposite direction; similarly, when the scraping strip 215 hits the hanging strip baffle 216 on the other side, it will change direction again, so that the transparent window 212 can be cleaned by reciprocating.

As can be seen from the above working principle, in order to realize the control of the reciprocating motion of the scraper 215, a current detection module needs to be provided to detect the current flowing through the scraper motor; when the scraper motor current is greater than a specified threshold, the The detection value output by the current detection module enables the main control board to control the switching of the rotation direction of the scraper motor.

In the circuit shown in FIG. 10 , the resistor R1 and the mechanism for detecting the current flowing through the resistor R1 constitute the current detection module. The specific principle of this circuit to realize current detection is as follows: the voltage value of the positive pole of the resistor R1 is introduced into an input port of the main control board, and the main control board can calculate the voltage flowing through the resistance according to the voltage value connected to the input port. The current value of R1, if the voltage value of the positive electrode of the resistor R1 is higher than a threshold value set inside the main control board, it can be determined that the current flowing through the resistor R1 is too high, indicating that the movement of the scraper 215 Blocked by the scraper baffle 216, the main control board changes the conduction state of the H-bridge circuit by changing the output value of the output port connected to the control terminal of Q1-Q4, thereby changing the scraper The rotation direction of the motor realizes the reciprocating motion of the scraper 215.

The timing of starting the scraper mechanism can be judged according to the control of the sensor and the signal reception; for example, when the main control board supplies power to the transmitter 211-1 with the current or voltage required for the maximum emission intensity When the receiver 211-2 still cannot receive a stable signal, it is necessary to start the operation of the scraping mechanism to clean the transparent window 212. After a period of cleaning—the specific cleaning time can be preset with a time parameter—if the receiver 211-2 can smoothly obtain a stable signal, it means that the infrared signal can be transmitted normally, and the scraping mechanism stops running .

The arrangement of the above-mentioned dust detection device has the following beneficial effects:

(1) The dust detection device is installed outside the transfer pipe connecting the dust bucket of the vacuum cleaner and the air duct pipe, and the dust signal is detected from the position near the entrance of the dust suction vacuum cleaner, which realizes accurate collection of the current dust concentration and identification of large particles The effect of dust, and through the protection of the transparent window, the dust backlog at the transmitting end and receiving end of the dust detection device is reduced, the sensitivity of the dust sensor is avoided during the use process, and the accuracy of dust concentration detection is improved.

(2) The sensor is set on the dust bucket or the pipe wall part of the air duct to realize the technical effect that the dust sensor will not hinder the air intake of the air duct, and combined with the setting of the transparent window, the technology for detecting the dust concentration is realized Effect.

(3) By arranging the hanging bar and the hanging bar baffle, the transparent window can be cleaned, so that the light path between the sensor transmitter and the receiver can not be blocked, and the sensitivity of receiving the dust detection signal is improved.

The air pressure detection and protection system 300 of the present application is introduced below.

The embodiment of the present application provides a vacuum cleaner air pressure detection and protection system, which solves the technical problem in the prior art that the air pressure change in the vacuum cleaner cannot be fed back to the actuator components of the vacuum cleaner, such as motors and display components. When the critical value is reached, the relevant actuators are controlled differently, which realizes effective protection for the use of the vacuum cleaner.

The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

The air pressure value detected by the air pressure detection module is input into the comparator. The comparator is preset with a critical value to control each actuator. By judging whether the air pressure value obtained by the detection reaches a certain range of the critical value, the corresponding actuator is controlled. Control accordingly. The air pressure detection module can be set at different positions of the vacuum cleaner, and different controls are performed according to the detection results at different positions.

In order to better understand the above solution, the above technical solution will be described below in conjunction with the accompanying drawings and specific implementation methods.

Please refer to FIG. 11 , which is a logic block diagram of the air pressure detection and protection system of the vacuum cleaner according to the embodiment of the present application.

An air pressure detection and protection system 300 for a vacuum cleaner according to an embodiment of the present application includes an air pressure detection module 310 , a first converter 621 , a comparator 320 , and a first controller 611 .

The air pressure detection module 310 is arranged at the air pressure sensitive position of the vacuum cleaner. Air pressure sensitive positions of the vacuum cleaner include the position of the main suction port, the position of the dust bucket, the position of the air outlet, and the position of the inner cavity of the motor. The air pressure detection module 310 can be set in one of the above positions, or can be set in all of them. The air pressure detection module 310 obtains air pressure samples through the sampling air pipe connected to the air pressure sensitive position of the vacuum cleaner. The air pressure detection module 310 detects the air pressure value of the air pressure sensitive position of the vacuum cleaner in real time during the operation of the vacuum cleaner and converts it into an electrical signal. The air pressure detection module 310 can be implemented in a variety of ways. There are already a variety of pressure sensor chips for measuring air pressure in the prior art, which can be selected according to the situation.

The first converter 621 is arranged in the vacuum cleaner and is connected to the air pressure detection module 310 for signals. The first converter 621 receives the electrical signal of the air pressure detection module 310 and converts the electrical signal into a reflected air pressure value digital signal. The air pressure detection module 310 and the first converter 621 can be realized in various ways. In the prior art, there are various air pressure detection integrated circuits including air pressure sensors and signal processing circuits for measuring air pressure. The situation is optional. These chips actually integrate the air pressure detection module 310 and the first converter 621 to realize air pressure detection and output a digital signal reflecting the air pressure value that can be received by the controller main control board.

The comparator 320 is set in the controller and is connected with the first converter 621 for receiving the digital value reflecting the air pressure value provided by the first converter 621 and pre-comparing it with the comparator 320. Comparing the various critical values set, to obtain the corresponding comparison results.

The first controller 611 is generally a part of the controller 610 related to air pressure detection and control based on the air pressure detection. Of course, it can also be a separate control unit. program, stored related parameter information, and an arithmetic unit that runs the related control program; the first controller 611 is used here to illustrate it independently. The first controller 611 is used to receive the comparison result output by the comparator 320, and output corresponding control instructions to each actuator of the vacuum cleaner according to the comparison result. The executive element includes a display unit, a vacuum motor, and an alarm element.

In the case that the output of the first converter 621 is already a digital value, the above-mentioned comparator 320 can actually compare the air pressure detection value provided by the first converter 621 with the main control board included in the first controller 611 (that is, the micro control unit MCU chip with operation and storage functions) can be compared with the critical value data prestored in the storage unit, and the comparison process can be realized by using the operation function provided by the main control board. The comparison result is provided to the first controller 611, and the first controller 611 can control the relevant actuators according to the comparison result and the preset program.

Please refer to Fig. 12, which is a flow chart of the controller work in the embodiment of the present application; it should be noted that the flow chart is only a schematic flow chart provided according to a specific implementation mode, and several judgment steps provided in it are logically There is no sequence, that is, the steps S110, S120, S130, and S140 provided in the flow chart of Figure 12 can be arbitrary or concurrent; the above steps S110, S120, S130, and S140 can also be executed. Any step or any number of steps, not all of them.

According to whether the detected air pressure reaches a specific critical value, the first controller 611 may choose to control one or several actuators, and not control other actuators.

S110: Detect that the air pressure value obtained is lower than the minimum allowable threshold, and corresponding to the comparison result, the first controller 611 sends a control command to stop the vacuum motor, and sends a control command to start an alarm to the alarm element.

The air pressure value detected in this step is lower than the minimum allowable threshold, indicating that it is difficult for outside air to enter, and the air path has been severely blocked, for example, any part of the air inlet duct or dust suction channel is blocked. If this situation lasts for too long, It will cause the vacuum motor to heat up due to excessive resistance, and may burn out the motor and the plastic components of the vacuum cleaner; for this reason, it is necessary to stop and alarm.

If the detected air pressure value is higher than the maximum allowable threshold, corresponding to the comparison result, the first controller 611 sends a control command to stop the vacuum motor, and sends a control command to start an alarm to the alarm element.

The air pressure value detected in this step is higher than the maximum allowable threshold, indicating that the air of the vacuum cleaner is difficult to get out, and the air path has been seriously blocked, such as the air outlet channel or the position of the air outlet is blocked. If this situation lasts for a long time, it will also cause Due to the excessive resistance of the vacuum motor, the heat may burn out the motor and the plastic components of the vacuum cleaner; for this reason, it is necessary to stop and alarm.

S120: The detected air pressure value is higher than the minimum allowable threshold and lower than the normal value, and corresponding to the comparison result, the first controller 611 sends a control command to increase the operating power to the vacuum motor;

If the detected air pressure value is higher than the minimum allowable threshold and lower than the normal value, it indicates that the resistance of the intake air path is too large, but it is possible to restore the normal working state of the vacuum cleaner by increasing the suction force. The motor sends out a control command to increase the operating power until the air pressure value is normal.

The detected air pressure value is lower than the maximum allowable threshold and higher than the normal value. Corresponding to the comparison result, the first controller 611 sends a control command to reduce the operating power to the vacuum motor; when the detected air pressure value reaches the normal value Afterwards, the controller re-controls the vacuum motor to resume normal operation.

If the detected air pressure value is lower than the maximum allowable threshold and higher than the normal value, it indicates that the air outlet resistance is too large, but it is possible to restore the normal working state of the vacuum cleaner by reducing the suction force. The motor issues a control command to reduce the operating power until the air pressure value is normal.

When the detected air pressure value reaches a normal value, the controller re-controls the vacuum motor to resume normal operation.

S130: The air pressure value detected by the position of the filter element is lower than the set prompt threshold for replacing the filter element. Corresponding to the comparison result, the first controller 611 controls the output display element to issue a prompt message that the filter element needs to be replaced.

This step is carried out according to the detection result of the air pressure value at the position of the filter element; when the air pressure value at the position of the filter element is too low, it means that there is too much dust accumulated in the filter element and needs to be replaced. At this time, the first controller 611 can send a prompt to the output device to replace the filter element The control command, there is an output device to issue a prompt; the specific prompt method can be realized according to the output mode of the vacuum cleaner. The status prompt of the LED light set on the surface of the vacuum cleaner.

S140: The air pressure value at the position of the dust bucket or the motor cavity is lower than the set dust bucket full threshold, and corresponding to the comparison result, the first controller 611 controls the output element to send a prompt message that dust needs to be cleaned.

This step uses the detection result of the air pressure detection value at the position of the dust bucket. When the detection result is lower than the set dust bucket dust full threshold, it means that there is too much dust accumulated in the dust bucket and needs to be cleaned. The first controller 611 controls The output element signals that dust needs to be cleaned.

A specific example is now described as follows:

Minimum allowable threshold Filter reminder threshold Dust bin full threshold normal value 20 40 60 90

When the detected air pressure value is 10, it prompts the motor to stop and sends out an alarm signal;

When the detected air pressure value is 30, control the motor to increase the power;

When the detection pressure value of the filter element position is 40, it prompts to replace the filter element;

When the detected air pressure value at the position of the dust bucket is 60, it indicates that the dust bucket is full of dust and the dust in the dust bucket needs to be cleaned.

Since the air pressure detection values at different positions can be obtained by sampling the air pressure sampling air pipe, and a variety of reliable and cheap air pressure detection chips have been provided in the prior art, it is possible to set multiple detection positions for a vacuum cleaner, and according to different detection Different critical values are set according to the situation of the location to achieve different control effects.

The speed regulation control system 400 of the present application is introduced below.

Please refer to FIG. 13 , which is a logic block diagram of the vacuum cleaner speed control system provided by this embodiment.

The vacuum cleaner speed regulation control system 400 provided in this embodiment includes: a touch sensor 410 , a power control device 420 , a second controller 612 , and a second converter 622 .

The touch sensing part 410 is arranged on the surface of the vacuum cleaner housing, and the touch sensing part 410 is used for receiving touch control and generating a touch sensing electrical signal according to the state of the touch control.

The second converter 622 receives the touch-sensitive electrical signal and converts it into a power indication signal or a rotation speed indication signal that can be recognized by the second controller 612 .

The second controller 612 receives a power indication signal or a rotational speed indication signal, and generates a power given signal corresponding to the power indication signal or a rotational speed given signal corresponding to the rotational speed indication signal under the control of an internal control element.

The power control device 420 is used to control the motor of the vacuum cleaner to move at the power given by the given power signal or to move at the speed corresponding to the given speed signal according to the given power signal or the given speed signal.

This embodiment can be applied to a handheld wireless vacuum cleaner or a traditional AC vacuum cleaner. If a wireless vacuum cleaner is used, the corresponding motor is a DC motor, and the corresponding power control device is a MOS tube (metal (metal)-oxide (oxide)-semiconductor (semiconductor) field effect transistor) or IGBT (Insulated Gate Bipolar Transistor), that is, an insulated gate bipolar transistor; if an AC vacuum cleaner is used, the corresponding motor is a series-excited motor, and the corresponding power control device is a thyristor. The touch-sensing element may be an FPC touch film, and the sensed touch-sensing electric signal is a capacitive signal.

The vacuum cleaner speed regulation control system provided in this embodiment adopts a touch sensor, a second converter, a second controller and a power control device, and converts the sensed touch-induced electrical signal into power through the change of the state of the touch control. indication signal or rotation speed indication signal, and the second controller generates a given power signal or a given speed signal, and the power control device controls the conduction of the dust collection motor, thereby obtaining the technical effect of stepless speed regulation of the vacuum cleaner and improving the user experience.

As shown in FIG. 14 , which is a schematic structural diagram of a touch sensor 410 provided in this embodiment, the touch sensor 410 provided in this embodiment includes: a sensor button 411 , an independent button 412 and an input/output terminal 413 .

The sensor buttons 411 are composed of more than 3 buttons arranged according to certain rules. The sensor buttons 411 are arranged successively along the specified direction. Each sensor button 411 is connected to a signal line to the input/output terminal 413 of the touch sensor 410; the input/output terminal 413 also includes a ground wire shared by the sensing buttons 411 . The sensing button 411 can adopt the principle of capacitive sensing to realize touch detection.

The input/output terminal 413 provides a signal connection, and outputs the detection results of the sensing button 411 and the independent button 412 to the relevant circuit or the controller 610, thereby converting the detection result formed by the capacitance change formed by the user's movement on the sensing button 411 It is a speed regulation instruction for manual speed regulation of the vacuum cleaner. The independent button 412 is a button that can be selected and set at an interval from the sensor button 411; by touching the independent button 412, the vacuum cleaner can enter automatic speed regulation.

The manual speed regulation of the vacuum cleaner is performed through the induction button 411, and the independent button 412 can control the vacuum cleaner to enter the automatic speed regulation, and the technical effect of the combination of the automatic speed regulation and manual speed regulation of the vacuum cleaner is obtained, and the user's operation is effectively improved. experience.

Please refer to Fig. 14, the sensory buttons 411 provided in this embodiment include: a head button 411-1, several middle buttons 411-2 and tail buttons 411-3, the adjacent sides of each sensory button 411 are fitted and handed over to each other, specifically , Adjacent sides adopt zigzag or wavy mutual fitting and handover.

For example, in the example shown in FIG. 14 , the adjacent sides of the sensing button 411 are joined together in a zigzag shape. The figure shows four zigzag-shaped adjacent sides, and the middle button 411-2 is between the four zigzag-shaped adjacent sides. Specifically, the middle button 411-2 includes: a first middle button 411-21, a second middle button 411-22, and a third middle button 411-23; each button in the induction button 411 is stacked and arranged in a rectangle, adjacent to each other. There is a cross-sectional change of gradual handover and replacement between keys in the direction of touch movement. The user's touch moves horizontally through the head button 411-1 to the tail button 411-3, and the capacitance detection results obtained by each button gradually change with the gradual change of the contact area, and are transferred between each button, so that it can be smoothly According to the speed regulation instruction, the smooth speed regulation of the vacuum cleaner motor can be realized. In order to conveniently explain the change of the button state of the sensor button 411, the moving direction from the head button 411-1 to the tail button 411-3 is used as an example for illustration. In actual operation, the user can move from the middle button 411-2 to the head button The front button 411-1 or the tail button 411-3 can be used to move, and the direction of movement is not limited.

When a finger touches the head button 411-1, the head button 411-1 has a first touch area in contact with the finger (if the ratio of the head button 411-1 to the finger is appropriate, the head button 411-1 will be 100% touch sensing), when the finger moves from the head button 411-1 to the first middle button 411-21, the finger touches on the adjacent side of the zigzag, and the head presses the first touch area of 411-1 decrease, the touch area of the first middle key 411-21 increases.

Utilizing the setting that the head button 411-1 and the first middle button 411-21 are fitted and handed over to each other, at the junction of the adjacent sides of the two, the proportion of the first touch area of the head button 411-1 being touched is higher than that of the user. Changes occur in the moving direction, that is, while the first touch area of the head button 411-1 decreases, the touch area of the first middle button 411-21 increases, so that the sensing circuit connected to the input/output terminal 413 (not shown in the figure) (shown) the sensed touch sensing electric signal presents a proportional change; correspondingly, when moving from the first middle key 411-21 to the tail key 411-3, for the two adjacent keys, the touch area is also proportional Change, through the touch sensing signal sensed by the touch circuit (not shown) connected to the input/output terminal 413, the direction of the user's sliding and which sensing buttons 411 are touched can be known, so that the user feels that the speed regulation of the vacuum cleaner is Coherent, thus obtaining the technical effect of smooth stepless speed regulation of the vacuum cleaner.

In an optional embodiment, the tail button 411-3 and the head button 411-1 are electrically connected to each other, such as connecting the two as the same button unit through a silver wire, and the user slides from the head button 411-1 to the tail button At 411-3, the head button 411-1 and the tail button 411-3 sequentially generate the same touch-sensitive electrical signal, indicating the end of a sliding process. This solution can increase the accuracy and sensitivity of touch and improve user experience.

In an optional implementation, the power can also be adjusted by sliding in a predetermined direction between any two points between the head button 411-1 and the tail button 411-3. When it is set to slide from the head button 411-1 to the tail button 411-3 to increase the power, select the first point and the second point arbitrarily in the direction that the head button 411-1 points to the tail button 411-3, When the user slides from the first point to the second point, it is a sliding adjustment to increase the power, and when the user slides from the second point to the first point, it is a sliding adjustment to reduce the power. Because the power value of the first point is not equal to the power value of the second point, when any two points slide between the head button 411-1 and the tail button 411-3, the power will change, and this change is For power regulation. Similarly, if it is set to slide from the head button 411-1 to the tail button 411-3 to reduce the power, sliding between any two points between the two buttons can change the power value, and this change also To adjust the power value. This kind of sliding between two points to adjust the power makes the user more convenient to use and improves the user experience.

As shown in Figure 15 and Figure 16, Figure 15 is a schematic structural diagram of the touch panel provided in this embodiment, and Figure 16 is a schematic diagram of the positional relationship between the touch sensing element and the touch panel;

The vacuum cleaner speed control system also includes: a touch panel 430; the upper part of the touch panel 430 is a touch surface for receiving touch control, and the touch sensor 410 is attached to the lower part of the touch panel 430; the touch panel 430 can not affect or can help the touch sensor 410 Receive touch controls loaded directly on the touch surface;

Optionally, a touch direction icon 430-1 is provided on the touch panel 430, and the user slides on the touch panel 430 along the prompting direction of the touch direction icon 430-1.

Optionally, the touch direction icon 430-1 includes a start icon 430-11 and an end icon 430-12. When the touch sensor 410 is attached to the lower part of the touchpad 430, the touch sensor 410 is correspondingly attached to the start icon. 430-11 and the end icon 430-12, and the head button 411-1 corresponds to the start icon 430-11, and the tail button 411-3 corresponds to the end icon 430-12. When the user adjusts the speed, just slide the finger between the start icon 430-11 and the end icon 430-12, or move between the start icon 430-11 and the end icon 430-12 through proximity sensing to realize Speed regulation of the vacuum cleaner.

Optionally, the material of the touchpad 430 may be plastic, glass or metal plating.

As shown in FIG. 17 , the present application also provides a vacuum cleaner, which adopts the vacuum cleaner speed control system as described above; and the vacuum cleaner speed control system is arranged on the outer surface of the vacuum cleaner.

The method for adjusting the power or rotational speed of the vacuum motor of the present application is introduced below.

The embodiment of the present application provides a method for adjusting the power or rotational speed of the vacuuming motor, which solves the technical problem in the prior art that the motor power adjustment by a single index is not accurate enough. By combining at least two indexes, a given value of the motor power is obtained, Accurate adjustment of motor power is realized.

The technical solution in the embodiment of the present application is to solve the above-mentioned technical problems, and the general idea is as follows:

At least two dust indicators detected by the dust detection unit are input into the vacuum cleaner control system. The vacuum cleaner control system is pre-configured with a control scheme of motor power combined with dust indicators. By judging whether the detected dust indicators reach the corresponding range in the vacuum cleaner control system, Within this range, refer to the expected value of the motor power or rotational speed, and control the vacuum motor to perform corresponding operations, such as increasing the current power or reducing the current power, to reach the expected value of the motor power. It should be explained that whether to control the power of the vacuum motor or to control the speed of the vacuum motor, there will be some differences in the specific control relationship, but the essence is completely the same. Both motors mean increased suction. In order to adjust the suction force of the vacuum motor, it is feasible to use power regulation or speed regulation, and the control scheme is basically the same.

In order to better understand the above solution, the above technical solution will be described below in conjunction with the accompanying drawings and specific implementation methods.

Please refer to FIG. 18 , which is a flowchart of a method for adjusting the power of a vacuum cleaner motor in an embodiment of the present application.

The method for adjusting the power or rotational speed of the vacuum cleaner motor in the embodiment of the present application includes:

S210: Receive the dust index provided by the dust detection unit, where the dust index includes at least two specific indexes reflecting the dust condition;

The dust detection unit is a dust sensor, which can be an infrared sensor, a photoelectric sensor or other types of sensors, and is used to detect dust indicators in the dust passage.

The dust index specifically refers to a dust concentration index and a dust particle size index; it may also include an ambient air pressure index, an ambient humidity index, or an ambient temperature index. Dust indicators are used to evaluate the status of dust in the working environment of vacuum cleaners, as well as other environmental conditions related to dust, and are not limited to the specific indicators listed above.

S220: Using the dust index, substituting the predetermined dust collection motor power or rotation speed control scheme to obtain the expected value of the dust collection motor power or rotation speed.

In this step, the dust index is described by taking the dust concentration index and the dust particle index as examples.

The predetermined vacuum motor power or rotational speed control scheme can adopt various forms, one of which is a predetermined multi-dimensional table; the multi-dimensional table corresponds to the numerical range of the specific index reflecting the dust condition, and for each group of dust The index value sets the value or value range of the corresponding vacuum motor power or vacuum motor speed.

The following is a multi-dimensional table example of the relationship between dust concentration, particle size and motor power:

According to the content recorded in the above table, after knowing the detection data of the amount of dust (representing dust concentration) and the size of dust particles, the expected value of the motor power can be known.

In addition to the form method, a function method can also be used; the following specifically describes a method of using a function method to realize a predetermined control scheme for the power or speed of the vacuuming motor.

The vacuum motor power or speed control scheme is a preset power or speed calculation function; including but not limited to the following functional relationships:

P=a*T*D ³ , P=a(T+D ³ ), P=aT+bD, P=a(T*D), P=a(T ² +D ² );

Among them, a and b are constants, T is the dust concentration value, D is the dust particle size value; P is the power, the power P in the formula can be changed to the speed V, at this time, change the values of the constants a and b according to the situation.

The use of the above calculation functions may not be limited to any one, that is to say, in the process of adjusting the motor power, various schemes can be flexibly combined according to the situation; the following are the specific methods that can be used:

The calculation function adopts any one of the above-mentioned power calculation functions, or uses two or more of the above-mentioned power calculation functions in sections, or uses two or more of the above-mentioned power calculation functions and calculates each power The computed value of the function is weighted.

For the relevant parameters used in the above functions, the values of specific parameters can be determined according to experiments or empirical formulas or theoretical formulas of vacuum motors.

S230: According to the expected value of the dust collection motor power or rotational speed, provide a corresponding given value to the dust collection motor control unit.

The given value is the command value that the controller needs to provide to the dust collector motor control unit in order to obtain the expected value. According to the command value, the dust collector motor control unit can The dust motor is properly controlled so that the power or speed of the dust collection motor is on the expected value. According to the expected value of the required motor power or rotational speed, the required given value can be calculated according to the control relationship of the control system, which will not be repeated here.

As a preferred implementation, the upper limit value P _max and the lower limit value P _min can be set for the motor power, and after the power of the vacuuming motor is calculated using a preset power or rotational speed calculation function, the following points are used: Calculating the output power of the dust collector motor by segment method:

Among them, P is _the expected value of the output motor power in the actual work of the dust collector motor; P is the calculated value of the power or rotational speed of the vacuum motor calculated according to the calculation function; the P _input , P, P _min , P in the formula _max can be changed to _the corresponding vacuum motor speed related values V , V , V _min , V _max .

As a preferred implementation manner, after the step of using the dust index and substituting the predetermined vacuum motor power or speed control scheme, the following steps can also be performed:

S240: Combining the ambient air pressure index, the ambient humidity index or the ambient temperature index, correct the obtained value, and use the corrected value as the expected value of the dust collection motor power or rotation speed.

The meaning of this step is that, in addition to dust concentration and dust particle size indicators, other environmental indicators related to dust collection can also be considered comprehensively, for example, under different humidity conditions, for the same dust condition, the suction force required by the vacuum cleaner There may be a big difference. In the case of high humidity, greater suction is required, and in the case of low humidity, the suction can be smaller. Therefore, the expected value of the power or rotational speed of the vacuum motor obtained by using the function or table above can be corrected according to these relevant indicators.

Optionally, when the vacuum motor is just started, it operates at a set starting power or starting speed.

Optionally, the dust concentration index is represented by the number of particles passing the detection position per unit time.

Optionally, the dust particle size index is represented by an average value of particle diameters passing through the detection location.

Optionally, the dust detection unit is realized by using a dust detection sensor including a transmitter 211-1 and a receiver 211-2 and supporting circuits arranged between the dust bucket of the vacuum cleaner and the air duct.

The method for improving the accuracy of the dust detection sensor of the present application is introduced below.

The embodiment of the present application provides a method for improving the accuracy of the dust detection sensor to solve the problem in the prior art that the dust detection sensor cannot automatically calibrate the sensor sensitivity when detecting the dust concentration, and realizes the dust detection by using the emission intensity of the automatic dust detector. Calibration of detection sensor sensitivity.

The technical solution in the embodiment of the present application is to solve the above-mentioned problem of automatically calibrating the sensitivity of the sensor, and the general idea is as follows:

The main control board is provided with a reference signal VS for evaluating the sensitivity of the dust sensor. The reference signal VS is a predetermined value and is a fixed value during the dust sensor’s current dust detection process; this value can also be set with a suitable value. The error of the value interval is specifically determined according to the error range of the sensitivity of the dust detector in the current detection work.

By inputting the detection electrical signal VR of the dust detection sensor to the main control board, the main control board compares the detection electrical signal VR output by the sensor receiver 211-2 with the reference signal VS to determine the relationship between the two; When the value does not meet the preset threshold interval, the difference between the above two can be reduced by adjusting the electric drive value (generally using the power supply voltage) provided to the transmitter 211-1 of the sensor until the difference between the two Within the pre-set error range, the calibration work is completed. In this way, when the dust sensor detects dust, if the detection electrical signal VT and the reference signal VS are not within the preset error range, it will automatically adjust the electric drive of the dust sensor transmitter 211-1 to control the luminous intensity of the transmitter 211-1 , so as to change the size of the detection electrical signal VR of the dust sensor until the detection electrical signal VR meets the preset requirements; through this adjustment method, the problem of automatic calibration of sensor sensitivity is effectively solved.

It should be noted that the detection electrical signal VR is not directly used to obtain the output signal of dust concentration or dust particle size, but the output signal directly output from the receiver 211-2 or simply amplified, Under calibration conditions, this signal will generally tend to a stable value. For example, if the detection electrical signal uses a voltage signal, after the luminous intensity of the transmitter 211-1 is adjusted in place, the detection electrical signal VR output by the receiver 211-2 will soon be stable; the detection electrical signal VR is is the stabilized value. The so-called calibration environment refers to the situation where the vacuum cleaner is not working and the dust condition of the environment is normal, in which case the sensor can be calibrated.

The detection electrical signal VR and the reference signal VS generally use voltage signals, but it does not exclude the use of other forms of electrical signals, such as current signals, pulse signals, square wave signals, and the like.

Opposite to the electrical detection signal VR is a dust state detection signal used as the basis for detection of dust concentration or dust particle size. The dust state detection signal is a digital square wave signal obtained by amplifying and shaping the electrical detection signal VR.

In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Please refer to FIG. 19 , which is a flowchart of a method for improving the accuracy of a dust detection sensor according to an embodiment of the present application.

The method for improving the accuracy of the dust detection sensor in the embodiment of the present application includes the following steps:

S310: Under the calibration working environment, provide an electric driving VT of a certain value for the emitter 211-1 of the dust detection sensor.

The so-called calibration environment refers to the situation where the vacuum cleaner is not working and the dust condition of the environment is normal, in which case the sensor can be calibrated. The electric driving VT provides driving power for the emitter 211-1 of the dust sensor, and the emitter 211-1 is usually a light emitting diode, which emits light within a certain driving voltage range. The electric drive VT can be characterized by a voltage value, a current value, or other electric signal values; in most cases, the electric drive VT adopts a voltage value.

In this step, the electric drive VT is a determined value, which means any voltage value within the driving voltage range of the dust collector sensor, and the corresponding electric drive VT is the voltage value provided in the calibration environment. Provide the electric drive VT and The sensitivity of the dust detection sensor has nothing to do, it is provided as the initial voltage value to be calibrated, so it is not the actual working voltage value, so it can be determined arbitrarily within the working characteristic range of the sensor. In a specific implementation manner, the electric driving VT is provided by a voltage output port provided on the controller.

S320: Receive the detection electrical signal VR output from the receiver 211-2 of the dust detection sensor;

The detection electric signal VR is a signal obtained after the light signal of the transmitter 211-1 of the dust sensor is received by the receiver 211-2. As mentioned above, the signal can be simply amplified by the amplifier; the signal is connected to the main control board through the input port of the main control board in the controller, and read by the main control board.

S330: Compare the value of the detection electrical signal VR with the value of the preset reference signal VS, and determine whether the difference between the two is within a predetermined range.

The reference signal VS is a signal value that can be known in advance. If the detection electrical signal VR works on the reference signal VS, its accuracy, stability, and linearity are the best, and the best measurement effect can be obtained; The specific value of the reference signal VS is determined according to the factory parameters of the sensor, or obtained through experimental measurement, and the value is recorded in the memory of the controller for reading.

Since it is actually difficult to make the detection electrical signal VR equal to the reference signal VS, a value range around the reference signal VS can be set as a reasonable working area of the detection electrical signal VR. In order to judge whether the detection electrical signal VR is within a predetermined range, whether the absolute value of the difference between the obtained value of the detection electrical signal VR and the value of the reference signal VS is less than or equal to the corresponding predetermined range For example, the reference signal VS=2.4(v), the predetermined range is 2.4v±0.1v; then |VR-2.4|≤0.1 can be used to judge whether the detection electrical signal meets the requirements .

S340: If yes, the currently provided value of the electric drive VT meets the requirements, and this value is used as the electric drive provided to the transmitter 211-1 of the dust detection sensor to work.

This step is executed when the judgment result of step S330 is yes. At this time, according to the judgment of step S330, it can be considered that the value of the electric drive VT currently provided for the transmitter 211-1 meets the requirements and can be used. The electric drive VT determined in this step is often the value after several rounds of debugging; after entering this step, the calibration process can be ended.

S350: If not, according to the comparison result of the value of the detected electric signal VR and the value of the reference signal VS, adjust the value of the electric drive VT in the opposite direction, and return to the receiver 211 for receiving the dust detection sensor -2 the step of outputting the detection electrical signal VR.

This step is executed when the judgment result of step S330 is negative. At this time, according to the judgment of step S330, it can be considered that the value of the electric drive VT currently provided for the transmitter 211-1 does not meet the requirements and cannot be used directly. For this reason, it is necessary to provide the value of the electric drive VT again, and when a new value of the electric drive VT is adopted, return to step S320 for a new round of testing.

To re-provide the value of the electric drive VT, it is necessary to adjust the value of the electric drive VT in the opposite direction according to the comparison result of the previous step S330; the so-called adjustment in the opposite direction refers to:

If the detection electrical signal VR is greater than the reference signal VS, it means that the luminance of the emitter 211-1 needs to be lowered, and correspondingly, the value of the electric drive VT needs to be lowered;

If the detection electrical signal VR is smaller than the reference signal VS, it means that the luminance of the emitter 211 - 1 needs to be increased, and correspondingly, the value of the electrical drive VT needs to be increased.

The above-mentioned adjustment of the value of the electric drive VT in the opposite direction actually only illustrates the direction of adjustment. For the actual adjustment, it is hoped that the specific possible value can be directly obtained as much as possible, so as to determine the reasonable value of the electric drive VT faster; for Therefore, some calculation methods can be used, and these calculation methods can be pre-set in the control system 600, calculated and determined through the calculation resources provided by the control system 600, and provided to the transmitter 211-1 through the output port of the controller. Electric drive VT.

There are many methods for specific calculation. Generally speaking, the value group of the electric drive VT and its corresponding detection electric signal VR that have been known in the previous debugging steps that have been executed are taken as known values, and these values are calculated and passed. Then, according to the fitting function, the value of the electric drive VT corresponding to the value of the ideal detection electric signal VR is determined. Using the above method of function fitting, the required electric drive VT value can be obtained quickly. In the specific process of function fitting, it is generally enough to use linear function fitting. In special cases, you can also consider using other function fitting; for example, if the sensor operating characteristic curve is a quadratic function, you can consider using quadratic function combine. The following takes the linear function fitting method as an example to illustrate the specific process.

Please refer to FIG. 20 , which shows a flow chart of the above-mentioned specific method of adjusting the electric drive VT by means of function fitting. In step S350, according to the comparison result of the value of the detection electric signal VR and the value of the reference signal VS, the value of the electric drive VT is adjusted in the opposite direction, and returns to the receiver 211-2 for receiving the dust detection sensor. The step of outputting the detection electrical signal VR specifically includes performing the following steps:

S351: Form a set of data from the value of the electric drive VT used in the latest round of debugging and the obtained value of the detection electrical signal VR output by the receiver 211-2 as the current data;

S352: If the value of the detection electrical signal VR is lower than the value of the preset reference signal VS, then according to the current data and the value higher than the preset reference signal VS and the distance from the reference signal VS obtained in the previous adjustment step The most recent set of data, re-establish the linear relationship between the driving voltage and the detection electrical signal VR; if the value of the detection electrical signal VR is higher than the value of the preset reference signal VS, then according to the current data and the previous adjustment A set of data obtained in the step that is lower than the preset reference signal VS and closest to the reference signal VS re-establishes the linear relationship between the driving voltage and the detection electrical signal VR;

S353: According to the re-established linear relationship between the driving voltage and the detection signal VR, reacquire the value of the driving voltage VT corresponding to the reference signal VS;

S354: Use the newly obtained value of the driving voltage VT corresponding to the reference signal VS as the value of the electric driving VT in the step of providing a certain value for the electric driving VT to the emitter 211-1 of the dust detection sensor , and proceed to the next steps;

S355: Repeat the above steps until the required driving voltage VT is obtained; that is, the judgment result of step S330 is yes, and proceed to step S340.

Please refer to FIG. 21 , which is a flow chart for determining the electric drive VT provided by the present application; the method for determining the electric drive VT is characterized by using the upper and lower limit values of the electric drive VT of the sensor; The limit value and the lower limit value can be obtained according to the factory parameters of the sensor.

Specifically, before step S310, that is, under the calibration working environment, before the transmitter 211-1 of the dust detection sensor is provided with a certain value of electric drive VT, the following steps are included:

S0-301: Obtain the voltage value of the detection electrical signal VR output by the receiver 211-2 corresponding to the upper limit voltage value and the lower limit voltage value of the driving voltage within the driving voltage range; the voltage value of the detection electrical signal VR corresponding to the upper limit voltage value value, and the voltage value of the detection electrical signal VR output by the receiver 211-2 corresponding to the lower limit voltage value can be obtained through experimental measurement.

S0-302: According to (the upper limit voltage value, the voltage value of the detection electrical signal VR output by the receiver 211-2 corresponding to the upper limit voltage value), and (the lower limit voltage value, the detection of the output of the receiver 211-2 corresponding to the lower limit voltage value The voltage value of the electrical signal VR) two sets of data to establish a functional relationship between the driving voltage and the detected electrical signal VR; when a linear function is used, the functional relationship is a linear relationship.

S0-303: Obtain the value of the driving voltage VT corresponding to the reference signal VS according to the functional relationship between the driving voltage and the detection electrical signal VR.

S0-304: use the value of the drive voltage VT corresponding to the reference signal VS as the value of the electric drive VT in the step of providing a certain value for the electric drive VT to the emitter 211-1 of the dust detection sensor, and Proceed to next steps.

The data are listed in the following table and explained as follows:

The voltage value of the reference signal VS is 1.4v.

The drive voltage 1.2V is used as the electric drive VT of the determined value.

When obtaining the detection electrical signal, the actually obtained signal is a signal including a change process, therefore, it is necessary to determine the appropriate value timing for obtaining the detection electrical signal. Generally, two methods can be used:

Waiting for the voltage signal output by the output terminal of the receiver 211-2 to stabilize, the value of the analog voltage signal obtained is used as the detection electrical signal output by the receiver 211-2;

Another optional way is to use the obtained voltage value of the detected electrical signal VR as the receiver 211 after the number of the digital square wave signal to be used to characterize the dust state is kept at 0 for a specified length of time interval. -2 output detection electrical signal; the essence of this method is to use the situation of the dust state detection signal to indicate that the detection electrical signal is in a stable state.

Please refer to FIG. 22 , which is another flow chart for determining the electric drive VT provided by the present application.

In the non-working state, the following steps are included before providing the electric drive VT of a certain value for the transmitter 211-1 of the dust detection sensor:

S1-301: Obtain the voltage value of the first detection electrical signal VR output by the receiver 211-2 corresponding to the first driving voltage value, wherein the first driving voltage value is any estimated value within the driving voltage range;

S1-302: Obtain the voltage value of the second detection electrical signal VR output by the receiver 211-2 corresponding to the second driving voltage value, wherein the second driving voltage value is within the driving voltage range and the first driving voltage different values;

S1-303: According to (the first driving voltage value, the voltage value of the first detection electrical signal VR), and (the second driving voltage value, the voltage value of the second detection electrical signal VR), establish the driving voltage and detection Linear relationship of electrical signal VR;

S1-304: Obtain the value of the driving voltage VT corresponding to the reference signal VS according to the linear relationship between the driving voltage and the detection electrical signal VR;

S1-305: Use the value of the drive voltage VT corresponding to the reference signal VS as the value of the electric drive VT in the step of providing a certain value for the electric drive VT to the emitter 211-1 of the dust detection sensor, and Proceed to next steps.

In addition to the above solutions, the data obtained from each round of debugging can also be used to obtain a more accurate fitting function. At this time, the fitting function may not be linear, or only approximately linear. The specific processing method is in Various possible processing procedures are provided in the prior art, which will not be described in detail here; roughly speaking, the procedures are as follows:

The value of the electric drive VT used in this round of debugging and the obtained value of the detection electrical signal VR output by the corresponding receiver form a set of data, and this set of data is added to the data obtained in previous rounds of debugging and the initial data , forming the current sample data;

According to the current sample data, re-establish the functional relationship between the driving voltage VT and the detection electrical signal VR;

Re-obtaining an estimated value of the driving voltage VT corresponding to the reference signal VS according to the re-established linear functional relationship between the driving voltage and the detection signal VR;

Taking the re-acquired estimated value of the driving voltage VT corresponding to the reference signal VS as the value of the electric driving VT in the step of providing a certain value for the electric driving VT of the emitter of the dust detection sensor, and performing subsequent step;

Repeat the above steps until the required driving voltage VT is obtained.

By using the method for improving the accuracy of the dust detection sensor, it can be effectively ensured that the dust detection sensor works at a proper position of its working curve, thereby effectively improving the working accuracy of the dust detection sensor.

The above-mentioned various improvement measures surrounding the vacuum cleaner provided in the embodiments of the present application can effectively improve the working conditions of the vacuum cleaner and improve the user experience.

Although the present application is disclosed as above with preferred embodiments, it is not used to limit the present application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the present application The scope of protection should be based on the scope defined by the claims of this application.

Claims (12)

1. A vacuum cleaner display device, applied to a vacuum cleaner, the vacuum cleaner has a controller, characterized in that the vacuum cleaner display device includes a light-emitting display unit and a drive unit; The light-emitting display unit is arranged on the surface of the vacuum cleaner, and the light-emitting device included in the light-emitting display unit can emit light when the drive unit provides electric drive; through one or several factors of the light-emitting quantity, light-emitting position and light-emitting mode of the light-emitting device, The light-emitting display unit provides corresponding display information to the outside; The drive unit receives the first display instruction corresponding to the measured value of the set measurement parameter provided by the controller, generates a corresponding electric drive signal according to the specific value of the first display instruction, and drives the light-emitting The corresponding light emitting devices of the display unit emit light as required. 2. The vacuum cleaner display device according to claim 1, characterized in that, the light emitting display unit is composed of a plurality of light emitting devices arranged in a set order, the light emitting devices are LED lights, and the set order is At least one of the following forms: geometric shape distribution, character arrangement, pattern. 3. The vacuum cleaner display device according to claim 2, wherein the geometrically distributed LED lights are arranged in a circular shape, and the LED lights arranged in a circular shape include two colors arranged alternately or side by side. . 4 . The vacuum cleaner display device according to claim 3 , wherein, according to the size of the area of the circularly arranged LED lights, a circular light-transmitting cover plate of a corresponding size is provided. 5. The vacuum cleaner display device according to claim 3, characterized in that, the light emitting display unit is used to display dust concentration information; the corresponding light emitting device driving the light emitting display unit emits light according to requirements, specifically according to the first The specific value reflecting the dust concentration provided by the display command is displayed in the following way: When the dust concentration is less than or equal to the minimum threshold, all the light-emitting devices of the first color are turned on, and all the light-emitting devices of the second color are turned off; When the dust concentration is greater than or equal to the highest threshold, all the light-emitting devices of the first color are turned off, and all the light-emitting devices of the second color are turned on; When the dust concentration is between the lowest threshold and the highest threshold, light up the light-emitting device in the following manner: starting from the starting point set by the circle, according to the size of the specific value, light up the second color light-emitting device of the corresponding arc in proportion ; Light up the light-emitting device of the first color in the remaining arc range. 6. The vacuum cleaner display device according to any one of claims 2-5, characterized in that a display screen is provided; the display screen is provided with a battery power display part, and according to the remaining battery power value provided by the power management element of the vacuum cleaner, The battery power display part displays numbers representing the remaining power of the battery. 7 . The display device of the vacuum cleaner according to claim 6 , wherein the battery level display part includes displaying a battery icon. 8 . 8 . The display device for a vacuum cleaner according to claim 6 , wherein a power display unit for displaying power is provided on the display screen; the power display unit displays the working power of the vacuum cleaner motor. 9. The vacuum cleaner display device according to claim 8, characterized in that the power display part uses vertical lines or dots at equal intervals between the set start position and end position to mark the working power of the vacuum cleaner motor at the maximum power, all the vertical lines or dots between the start position and the end position are displayed; at other powers, according to the power, a corresponding number of vertical lines or dots are displayed from the start position to the end position. 10. The vacuum cleaner display device according to any one of claims 2-5, characterized in that a display screen is provided, and a fault display part is provided on the display screen, and the fault display part is used to represent the rolling brush, dust suction, etc. Fault information of channel, dust sensor. 11. The vacuum cleaner display device according to any one of claims 2-5, characterized in that a display screen is provided, and a communication display part is provided on the display screen, and the communication display part is used to represent the display device and the vacuum cleaner, The communication information of the smart terminal, the communication mode of the communication information is wired or wireless. 12. A vacuum cleaner, characterized in that the vacuum cleaner display device according to any one of claims 1-11 is used.