CN113484856B - Control method, processor, control device for household appliance and household appliance - Google Patents
Control method, processor, control device for household appliance and household appliance Download PDFInfo
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- CN113484856B CN113484856B CN202110696097.4A CN202110696097A CN113484856B CN 113484856 B CN113484856 B CN 113484856B CN 202110696097 A CN202110696097 A CN 202110696097A CN 113484856 B CN113484856 B CN 113484856B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
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- Radar, Positioning & Navigation (AREA)
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Abstract
The embodiment of the invention provides a control method, a processor, a control device and a household appliance, wherein the household appliance comprises a radar module, and the control method comprises the following steps: acquiring a detection signal, wherein the detection signal is a signal formed by reflecting a signal transmitted by a radar module by a human body; determining the distance and time between the human body and the household electrical appliance according to the detection signal; determining the duration of proximity sensing of the human body according to the distance and time; and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration. The motion trail of the human body around the household electrical appliance can be determined by using the distance and the time, and the household electrical appliance is controlled to respond to the proximity sensing function under the condition that the human body approaches the household electrical appliance, so that the proximity sensing function is prevented from being triggered by mistake, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of household electrical appliance control, in particular to a control method, a processor, a control device and household electrical appliance for household electrical appliance.
Background
Millimeter waves have the advantages of strong detection capability, high transmission quality and the like, and along with gradual reduction of the cost of millimeter wave modules, the proximity sensing function based on millimeter wave technology is increasingly applied to household appliances. The proximity sensing function means that when a person approaches the home appliance, the home appliance can respond.
One of the basic functions of the millimeter wave module is distance measurement, the existing approach sensing scheme based on the millimeter wave module is mainly realized by taking distance information as a judgment standard, the motion trail of people around the household appliance has uncertainty, and false triggering of the approach sensing function can possibly occur, so that user experience is reduced.
Disclosure of Invention
The invention mainly aims to provide a control method, a processor, a control device and household appliances, and aims to solve the technical problem that a proximity sensing function is easy to trigger by mistake in the prior art, so that user experience is reduced.
In order to achieve the above object, a first aspect of the present invention provides a control method for a home appliance, including the steps of:
acquiring a detection signal, wherein the detection signal is a signal formed by reflecting a signal transmitted by a radar module by a human body;
determining the distance and time between the human body and the household electrical appliance according to the detection signal;
determining the duration of proximity sensing of the human body according to the distance and time;
and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration.
In an embodiment of the present invention, determining a duration of proximity sensing of a human body according to a distance and time includes:
determining the change rate of the distance along with time according to the distance and the time;
the duration of the proximity sensing of the human body is determined according to the rate of change.
In the embodiment of the invention, determining the change rate of the distance along with time according to the distance and the time comprises the following steps:
determining the motion trail of the human body according to the distance and time;
comparing the time length of the motion trail with a second preset time length;
and under the condition that the track time length is longer than the second preset time length, deriving the motion track to obtain the change rate of the distance along with time.
In the embodiment of the invention, the method for determining the motion trail of the human body according to the distance and the time comprises the following steps:
comparing the distance with a preset distance;
under the condition that the distance is smaller than the preset distance, fitting the distance;
and obtaining a motion track according to the distance and time after fitting treatment.
In an embodiment of the present invention, determining a duration of proximity sensing of a human body according to a rate of change includes:
acquiring the change rate meeting the preset condition;
determining the number of the change rates meeting the preset conditions;
and determining the duration time of the proximity sensing of the human body according to the number and the third preset duration time.
In the embodiment of the invention, the preset condition is that the absolute value of the change rate is within a preset range.
In the embodiment of the invention, determining the distance and time between the human body and the household appliance according to the detection signal comprises the following steps:
and performing fast Fourier transform on the detection signals to obtain the distance and time between the human body and the household electrical appliance.
In the embodiment of the invention, the method for controlling the household appliance to send out the preset response information comprises the following steps:
and outputting a trigger instruction to enable a display panel of the household appliance to light up a screen when receiving the trigger instruction.
A second aspect of the present invention provides a processor configured to perform the control method for a home appliance of any of the above.
A third aspect of the present invention provides a control apparatus for a home appliance, comprising:
the radar module is used for collecting detection signals, wherein the detection signals are signals formed by reflecting signals emitted by the radar module by a human body; and
the processor described above.
In the embodiment of the invention, the control device further comprises a communication module, and the communication module is used for receiving the trigger instruction output by the processor and sending the trigger instruction to the response module of the household appliance, so that the response module sends out preset response information when receiving the trigger instruction.
In the embodiment of the invention, the communication module is also used for receiving the proximity induction switch instruction sent by the response module and sending the proximity induction switch instruction to the processor;
the processor is also used for controlling the radar module to collect detection signals under the condition that the proximity inductive switch instruction is on.
A fourth aspect of the present invention provides a home appliance, including the control device described above; and
and the response module is used for sending out preset response information.
In the embodiment of the invention, the response module is a display panel;
the sending of the preset response information comprises the following steps:
the screen of the display panel is lit.
In an embodiment of the present invention, the display panel is further configured to:
receiving key information input from the outside;
and outputting a proximity induction switch instruction according to the key information.
In the embodiment of the invention, the display panel is also used for illuminating a screen when receiving a trigger instruction.
According to the technical scheme, the detection signal is obtained, wherein the detection signal is a signal formed by reflecting a signal emitted by the radar module by a human body; determining the distance and time between the human body and the household electrical appliance according to the detection signal; determining the duration of proximity sensing of the human body according to the distance and time; and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration. The motion trail of the human body around the household electrical appliance can be determined by using the distance and the time, and the household electrical appliance is controlled to respond to the proximity sensing function under the condition that the human body approaches the household electrical appliance, so that the proximity sensing function is prevented from being triggered by mistake, and the user experience is improved.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. Attached at
In the figure:
fig. 1 is a flowchart of an embodiment of a control method for a home appliance according to the present invention;
fig. 2 is a flowchart of another embodiment of a control method for a home appliance according to the present invention;
FIG. 3 is a schematic diagram of the refinement procedure of step S31 in FIG. 2;
FIG. 4 is a schematic diagram of the refinement procedure of step S32 in FIG. 2;
FIG. 5 is a functional block diagram of an embodiment of a control device for home appliances according to the present invention;
fig. 6 is a functional block diagram of an embodiment of the home appliance of the present invention.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart of an embodiment of a control method for a home appliance according to the present invention.
In this embodiment, the home appliance includes a radar module, and the control method for the home appliance includes the following steps:
s10: acquiring a detection signal, wherein the detection signal is a signal formed by reflecting a signal transmitted by a radar module by a human body;
it should be understood that the execution body of the present embodiment is a control device, and the control device may be a device independent of the home appliance or a device provided in the home appliance, which is not limited in this embodiment.
Taking the control device as an example, the control device is arranged in the household appliance, in one embodiment, the control device comprises a radar module and a processor, signals are periodically transmitted by the radar module at a certain frequency, the signals return echo signals after being reflected by a human body, the radar module mixes the transmitted signals with the received echo signals to form intermediate frequency signals, and the intermediate frequency signals are detection signals; the detection signal is obtained from the radar module by a processor and processed.
It is often necessary to provide a plurality of acquisition points in the radar module, and in one embodiment, the acquisition frequency of the radar module is 10ms, and the number of the acquisition points is 260, so as to balance the acquisition accuracy and the response speed.
S20: determining the distance and time between the human body and the household electrical appliance according to the detection signal;
it is understood that the home appliance in this embodiment may be any home appliance including a radar module, such as a water dispenser, a water heater, and the like.
In an embodiment, after obtaining the detection signal, the processor in the control device performs a fast fourier transform on the detection signal to obtain a distance and a time between the human body and the home appliance.
S30: determining the duration of proximity sensing of the human body according to the distance and time;
it should be noted that, the movement track of the person around the home appliance has uncertainty, but the distance between the person and the home appliance is regular when the person approaches the home appliance, specifically, the distance continuously decreases with time, and according to the characteristic, it can be determined whether the person approaches the home appliance, and the duration of time that the person approaches the home appliance.
S40: and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration.
The first preset duration is a duration preset in the processor, and the behavior of proximity sensing of the human body can be judged under the condition that the duration exceeds the first preset duration; and under the condition that the duration time does not exceed the first preset duration time, judging that the human body does not have the action of proximity sensing.
Taking the first preset duration of 200ms as an example, under the condition that the duration of proximity sensing exceeds 200ms, the processor judges that the human body has the behavior of proximity sensing and controls the household appliance to send out preset response information; and under the condition that the duration time does not exceed 200ms, judging that the human body does not have the action of proximity sensing, initializing data, and acquiring detection signals from the radar module again.
It should be understood that the preset response information refers to information responsive to the proximity sensing function, such as voice, vibration, display lighting, etc., which is not limited in this embodiment.
In an embodiment, the processor may send a trigger instruction to the response module of the home appliance, so that the response module sends preset response information according to the trigger instruction.
Further, the control device also comprises a communication module, and the processor sends a trigger instruction to the response module through the communication module when judging that the human body has the action of proximity sensing. After receiving the trigger instruction, the response module analyzes the instruction to obtain a proximity sensing trigger command and responds correspondingly.
In an embodiment, when the home appliance is a water dispenser and the response module is a display panel, the display panel of the water dispenser controls the screen to be lighted after receiving the trigger command and analyzing the obtained proximity sensing trigger command to be a lighting screen.
The embodiment obtains the detection signal, wherein the detection signal is formed by reflecting a signal emitted by the radar module by a human body; determining the distance and time between the human body and the household electrical appliance according to the detection signal; determining the duration of proximity sensing of the human body according to the distance and time; and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration. The motion trail of the human body around the household electrical appliance can be determined by using the distance and the time, and the household electrical appliance is controlled to respond to the proximity sensing function under the condition that the human body approaches the household electrical appliance, so that the proximity sensing function is prevented from being triggered by mistake, and the user experience is improved.
Fig. 2 is a flow chart of another embodiment of a control method for home appliances according to an embodiment of the present invention.
In this embodiment, the step of determining the duration of proximity sensing of the human body according to the distance and time specifically includes the steps of:
s31: determining the change rate of the distance along with time according to the distance and the time;
it should be noted that, the motion track of the human body around the home appliance may be traversing or approaching the home appliance, and the change rate of the distance with time is different in both the traversing and approaching cases. When a human body passes through the household appliance, the change rate of the distance along with time is characterized by firstly becoming smaller and then becoming larger, and when the human body approaches the household appliance, the change rate of the distance along with time is characterized by continuously becoming smaller, so that whether the human body approaches the household appliance can be judged according to the change trend of the change rate.
In the specific implementation, the motion trail of the human body can be obtained according to the distance and time, and then the motion trail is derived to obtain the change rate of the distance along with the time.
S32: determining a duration of proximity sensing based on the rate of change;
it should be appreciated that the duration of proximity sensing may be determined by cyclically determining the magnitude of the rate of change over a period. For example, judging whether the primary change rate meets the preset condition within 50ms, and accumulating the duration time when the change rate meets the preset condition, wherein the duration time is increased by 50ms each time; and under the condition that the change rate does not meet the preset condition, continuously calculating the duration after acquiring the change rate of the next period.
According to the embodiment, whether the human body is approaching the household appliance or not can be accurately judged according to the characteristic that the change rate of the distance along with time is different when the human body approaches and traverses the household appliance, so that the household appliance is controlled to respond to the approach sensing function, false triggering of the approach sensing function when the human body traverses the household appliance is avoided, and the response accuracy is improved.
As shown in fig. 3, fig. 3 is a schematic diagram of the refinement procedure of step S31 in fig. 2.
In this embodiment, the step of determining the rate of change of the distance with time according to the distance and time specifically includes the steps of:
s311: determining the motion trail of the human body according to the distance and time;
specifically, the distance may be compared with a preset distance; under the condition that the distance is smaller than the preset distance, fitting the distance; and obtaining a motion track according to the distance and time after fitting treatment.
It should be appreciated that since signal acquisition is a continuous process, over time, the processor may obtain many detection signals that, after being subjected to a fast fourier transform, may obtain much time and distance information.
In order to obtain the motion trail of the human body, the processor firstly needs to obtain effective distance and time, compares the obtained distance with a preset distance, generates the motion trail according to the distance information smaller than the preset distance, and clears the currently stored distance and time when the distance is larger than or equal to the preset distance, and re-obtains the detection signal from the radar module and then processes the detection signal.
Taking the case that the preset distance is 50cm as an example, the processor acquires a detection signal, performs fast Fourier transform on the detection signal, judges whether the transformed distance is smaller than 50cm, stores the distance and the corresponding time when the distance is smaller than 50cm, and empties the distance and the corresponding time when the distance is larger than or equal to 50cm to acquire the detection signal again.
Since the distance information conforming to the condition is discrete, fitting processing is required for the discretized distance information in order to obtain the trajectory curve. After the above processing, a movement locus s=f (t) between the distance S and the time t is finally obtained.
S312: comparing the time length of the motion trail with a second preset time length;
it should be understood that the motion trajectory is a trajectory curve with time as the horizontal axis and distance as the vertical axis, and the length of the motion trajectory is the length of time corresponding to the trajectory curve.
S313: and under the condition that the track time length is longer than the second preset time length, deriving the motion track to obtain the change rate of the distance along with time.
Taking the second preset duration as an example, when the time length of the motion track is greater than 50ms, deriving the motion track to obtain a derivative function of the motion track, namely the change rate of the distance along with time; in the case where the length of time of the motion trajectory is less than or equal to 50ms, the processor re-acquires the detection signal from the radar module.
The embodiment determines the motion trail of the human body according to the distance and time; comparing the time length of the motion trail with a second preset time length; and under the condition that the track time length is longer than the second preset time length, deriving the motion track to obtain the change rate of the distance along with time. The effectiveness of the obtained change rate can be improved by screening the distance and the time length of the motion trail, and the accuracy of the proximity induction response is further improved.
As shown in fig. 4, fig. 4 is a schematic diagram of the refinement procedure of step S32 in fig. 2.
In this embodiment, the step of determining the duration of proximity sensing of the human body according to the rate of change specifically includes the steps of:
s321: acquiring the change rate meeting the preset condition;
the preset condition is that the absolute value of the change rate is in a preset range. Taking the case that the preset range is less than or equal to 0.1 as an example, the processor screens out the change rate with the absolute value less than or equal to 0.1 after obtaining the change rate.
S322: determining the number of the change rates meeting the preset conditions;
s323: and determining the duration of the proximity sensing according to the number and the third preset duration.
It should be appreciated that the present embodiment determines the duration of proximity sensing by cyclically determining the magnitude of the rate of change over a period. Taking the case that the preset range is less than or equal to 0.1 and the third preset duration is 50ms as an example, the processor judges whether the absolute value of the primary change rate is less than or equal to 0.1 within 50ms after obtaining the change rate, and accumulates the duration when the absolute value is less than or equal to 0.1, and increases for 50ms each time; in the case where the absolute value is greater than 0.1, the duration is unchanged, and the duration is continuously calculated after the rate of change of the next cycle is acquired. That is, the duration may be obtained by multiplying the number of change rates whose absolute value is less than or equal to 0.1 by 50 ms.
The embodiment obtains the change rate meeting the preset condition; determining the number of the change rates meeting the preset conditions; and determining the duration of the proximity sensing according to the number and the third preset duration. When the human body is in proximity sensing, the time of the proximity sensing is calculated according to the characteristics that the change rate is in a certain range and lasts for a long time, false triggering of household appliances under the condition that the human body traverses or other conditions is effectively eliminated, and user experience is improved.
The embodiment of the invention also provides a processor, which is used for running a program, wherein the control method for the household appliance is executed when the program runs.
The embodiment of the invention also provides a control device for the household appliance.
Referring to fig. 5, fig. 5 is a functional block diagram of an embodiment of a control device for home appliances according to the present invention.
In this embodiment, a control device for a home appliance includes: the radar module 11 is used for collecting detection signals, wherein the detection signals are signals formed by reflecting signals emitted by the radar module 11 by a human body; the processor 12 described above.
Specifically, the radar module 11 includes a transmitter, a receiver, and a mixer, where the transmitter periodically transmits a signal at a certain frequency, the signal is reflected by a human body and returns an echo signal, the receiver receives the echo signal, and the mixer mixes the transmitted signal and the echo signal to form an intermediate frequency signal, and the intermediate frequency signal is a detection signal.
It is generally necessary to provide a plurality of acquisition points in the radar module 11, and in one embodiment, the acquisition frequency of the radar module 11 is 10ms, and the number of the acquisition points is 260, so as to balance the acquisition accuracy and the response speed.
The processor 12 obtains the detection signal from the radar module 11 and processes it.
Specifically, the processor 12 is configured to acquire the detection signal after acquiring the detection signal; determining the distance and time between the human body and the household electrical appliance according to the detection signal; determining the duration of proximity sensing of the human body according to the distance and time; and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration.
In one embodiment, after obtaining the detection signal, the processor 12 may perform a fast fourier transform on the detection signal to obtain a distance and time between the human body and the home device.
It should be noted that, the movement track of the person around the home appliance has uncertainty, but the distance between the person and the home appliance is regular when the person approaches the home appliance, specifically, the distance continuously decreases with time, and according to the characteristic, it can be determined whether the person approaches the home appliance, and the duration of time that the person approaches the home appliance.
In one embodiment, after obtaining the distance and the time, the processor 12 may obtain a motion trajectory of the human body according to the distance and the time, derive the motion trajectory, obtain a change rate, and determine the duration of the proximity sensing of the human body according to the change rate.
Specifically, the processor 12 is further configured to compare the distance to a preset distance; under the condition that the distance is smaller than the preset distance, fitting the distance; and obtaining a motion track according to the distance and time after fitting treatment.
Further, the processor 12 is further configured to compare the length of the motion profile with a second preset duration; and under the condition that the track time length is longer than the second preset time length, deriving the motion track to obtain the change rate of the distance along with time.
Further, the processor 12 is further configured to obtain a rate of change that satisfies a preset condition; determining the number of the change rates meeting the preset conditions; and determining the duration of the proximity sensing according to the number and the third preset duration.
Further, the control device for the home appliance further comprises a communication module 13,
when the duration of the proximity sensing exceeds the first preset duration, the processor 12 can determine that the human body has the proximity sensing behavior, send the triggering instruction to the communication module 13, and the communication module 13 transmits the triggering instruction to the response module of the home appliance, and after receiving the triggering instruction, the response module analyzes the instruction to obtain a proximity sensing triggering instruction and sends preset response information; when the duration does not exceed the first preset duration, the processor 12 determines that the human body does not have the proximity sensing behavior.
The communication module 13 is used for transmitting instructions between the processor 12 and the response module, and the communication module 13 may be a universal asynchronous receiving and transmitting transmitter, where the universal asynchronous receiving and transmitting transmitter is connected with the response module through a serial port, so as to implement transmission of triggering instructions.
Further, the communication module 13 is further configured to receive the proximity sensing switch instruction sent by the response module, and send the proximity sensing switch instruction to the processor 12; the processor 12 is further configured to control the radar module 11 to collect the detection signal when the proximity sensing switch command is on.
It should be noted that, when the proximity sensing key of the home appliance is pressed, the response module receives the proximity sensing key information and sends a proximity sensing switch instruction to the processor 12 through the communication module 13, the processor 12 analyzes the instruction, determines that the proximity sensing function is turned on when the proximity sensing instruction is turned on, and determines that the proximity sensing function is turned off when the proximity sensing instruction is turned off. And controls the radar module 11 to collect signals in case the proximity sensing function is on.
According to the embodiment, the radar module, the processor and the communication module are arranged in the control device, so that acquisition and acquisition of detection signals are realized, whether a human body approaches to the household appliance or not is determined according to the detection signals, and a trigger command is sent to the response module under the condition that the human body approaches to the household appliance, so that the response module responds, the situation that the human body crosses the household appliance is effectively avoided, and the control accuracy is improved.
The embodiment of the invention also provides the household appliance.
Referring to fig. 6, fig. 6 is a functional block diagram of an embodiment of the present invention.
In this embodiment, the home appliance includes the control device 10 described above; and a response module 20 for sending out preset response information.
In an embodiment, the response module 20 communicates with the control device 10 through a serial port, and the response module 20 is connected with the communication module 13 in the control device 10 through the serial port, so as to implement receiving the trigger instruction and sending the proximity sensing switch instruction.
It should be understood that the preset response information refers to information responsive to the proximity sensing function, such as voice, vibration, display lighting, etc., which is not limited in this embodiment.
In an embodiment, the processor 12 in the control device 10 may send a trigger instruction to the response module 20, so that the response module 20 sends out preset response information according to the trigger instruction.
In an embodiment, when the home appliance is a water dispenser and the response module 20 is a display panel, the display panel of the water dispenser controls the screen to be turned on after receiving the trigger command and analyzing the obtained proximity sensing trigger command to be a turned-on screen.
Further, the display panel is also used for receiving key information input from the outside; and outputting a proximity induction switch instruction according to the key information.
It should be understood that when the proximity sensing key of the home appliance is pressed, the display panel receives the proximity sensing key information, and the display panel judges whether the current proximity sensing state is closed according to the information, and controls the proximity sensing key to be turned on when the proximity sensing state is closed, and controls the proximity sensing key to be turned off when the proximity sensing state is not closed.
The display panel transmits a proximity sensing switch instruction to the control device 10, and the processor 12 in the control device 10 analyzes the instruction, determines that the proximity sensing function is on when the proximity sensing instruction is on, and determines that the proximity sensing function is off when the proximity sensing instruction is off. And the radar module 11 in the control device 10 collects signals in case the proximity sensing function is on.
In the following, taking a water dispenser as a household device and a display panel as a response module, the working principle of the embodiment is described as follows:
the water dispenser comprises a control device 10 and a response module 20, wherein the control device 10 comprises a radar module 11, a processor 12 and a communication module 13.
The radar module 11 periodically emits and collects signals at a certain frequency. After the acquisition is completed, the resulting detection signal is sent to the processor 12.
After the processor 12 obtains the detection signal, the distance and time are obtained by fast fourier transform. Over time, the processor 12 will get more and more distances, and screen out distances from the resulting distances that are no greater than a preset distance (e.g., 50 cm), and the time that the distance corresponds to. Since these distances are discretized, the processor 12 performs a fitting process on the discretized distances in order to obtain the motion profile. Through the above processing, the movement locus s=f (t) between the distance S and the time t that will eventually come. After obtaining the motion trajectory, the processor 12 performs a derivative operation on the motion trajectory to obtain a rate of change a of the distance with time. When the change rate A meets the preset condition (such as the absolute value of the change rate is less than or equal to 0.1) and the duration exceeds the first preset duration (such as 200 ms), the proximity sensing is judged to exist. At this time, the processor 12 sends a trigger instruction to the communication module 13.
The communication module 13 is responsible for serial communication between the control device 10 and the display panel of the water dispenser. After receiving the trigger instruction of the processor 12, the communication module 13 sends the trigger instruction to a display panel of the water dispenser according to a protocol; meanwhile, the communication module 13 receives a proximity sensing switch instruction from a display panel of the water dispenser and sends the proximity sensing switch instruction to the processor 12, so that the switch control of the proximity sensing function is completed.
After the display board of the water dispenser receives the trigger instruction, the screen is controlled to be lightened, and the automatic lightening function when a person approaches the display board is realized.
According to the embodiment, the control device and the response module are arranged in the household appliance, and the response module is controlled by the control device to respond to the proximity sensing function, so that the response of the proximity sensing function is automatically controlled according to the user behavior, and the use experience of a user is improved.
The embodiment of the invention also provides a machine-readable storage medium, wherein a program is stored on the machine-readable storage medium, and the control method for the household appliance is realized when the program is executed by a processor.
The specific embodiments of the computer readable storage medium of the present invention are substantially the same as the embodiments of the control method described above, and are not described herein.
The embodiment of the invention also provides equipment, which comprises a processor, a memory and a program stored in the memory and capable of running on the processor, wherein the processor calls the control program for the household electrical appliance from the memory, and when executing the control program for the household electrical appliance, the processor can execute the control method for the household electrical appliance.
The specific embodiments of the apparatus of the present invention are substantially the same as the embodiments of the control method described above, and are not described herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, including several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (12)
1. A control method for an electric home appliance, the electric home appliance comprising a radar module, the control method comprising:
acquiring a detection signal, wherein the detection signal is a signal formed by reflecting a signal emitted by the radar module by a human body;
determining the distance and time between the human body and the household electrical appliance according to the detection signal;
determining the change rate of the distance along with the time according to the distance and the time;
acquiring a change rate meeting a preset condition, wherein the preset condition is that the absolute value of the change rate is in a preset range;
determining the quantity of the change rate meeting the preset condition;
determining the duration of proximity sensing of the human body according to the number and a third preset duration;
and controlling the household appliance to send out preset response information under the condition that the duration exceeds the first preset duration.
2. The control method according to claim 1, wherein the determining a rate of change of the distance with time from the distance and the time includes:
determining the motion trail of the human body according to the distance and the time;
comparing the time length of the motion trail with a second preset time length;
and under the condition that the track time length is longer than the second preset time length, deriving the motion track to obtain the change rate of the distance along with time.
3. The control method according to claim 2, wherein the determining the motion trajectory of the human body according to the distance and the time includes:
comparing the distance with a preset distance;
under the condition that the distance is smaller than the preset distance, fitting the distance;
and obtaining a motion track according to the distance after fitting and the time.
4. A control method according to any one of claims 1 to 3, wherein the determining the distance and time between the human body and the home appliance according to the detection signal includes:
and performing fast Fourier transform on the detection signal to obtain the distance and time between the human body and the household electrical appliance.
5. A control method according to any one of claims 1 to 3, wherein the controlling the home appliance to send out preset response information includes:
and outputting a trigger instruction to enable a display panel of the household appliance to light up a screen when receiving the trigger instruction.
6. A processor configured to perform the control method for an electric home appliance according to any one of claims 1 to 5.
7. A control device for an electric home appliance, comprising:
the radar module is used for collecting detection signals, wherein the detection signals are signals formed by reflecting signals emitted by the radar module by a human body; and
the processor of claim 6.
8. The control device according to claim 7, characterized by further comprising:
and the communication module is used for receiving the trigger instruction output by the processor and sending the trigger instruction to the response module of the household appliance, so that the response module sends out preset response information when receiving the trigger instruction.
9. The control device according to claim 8, wherein,
the communication module is also used for receiving the proximity induction switch instruction sent by the response module and sending the proximity induction switch instruction to the processor;
the processor is also used for controlling the radar module to acquire the detection signal under the condition that the proximity inductive switch instruction is on.
10. An electrical home appliance, comprising:
the control device according to any one of claims 7 to 9; and
and the response module is used for sending out preset response information.
11. The home appliance of claim 10, wherein the response module is a display panel;
the sending out the preset response information comprises the following steps:
and lighting up the screen of the display panel.
12. The home appliance of claim 11, wherein the display panel is further configured to:
receiving key information input from the outside;
and outputting a proximity induction switch instruction according to the key information.
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