CN115720394A - Illumination control system and method for range hood - Google Patents

Abstract

The invention provides a range hood lighting control system and method, which relate to the technical field of kitchen appliances. The range hood lighting control system includes a sensor unit, a central processing unit, a lighting driver and a lighting lamp. The range hood lighting control system includes The sensor unit can sense the target electrical signal of the surrounding environment, the target electrical signal at least includes: light intensity signal, the central processing unit can output the target PWM signal to the lighting driver according to the target electrical signal, and then the lighting driver outputs the target for driving the lighting lamp The driving signal is used to adjust the luminous parameters of the illuminating lamp, and the luminous parameters at least include: brightness. The system provided by the application of the present invention can automatically adjust the lighting parameters of the lamp according to the surrounding environment of the range hood without the need for the user to manually turn on/off/adjust, thus effectively improving the user experience.

Description

Range hood lighting control system and method

technical field

The invention relates to the technical field of kitchen appliances, in particular to a range hood lighting control system and method.

Background technique

At present, the lamps used in range hoods on the market are basically fixed brightness, which cannot be adjusted by the user, and can only be turned on and off by pressing buttons. However, the same brightness of lamps cannot meet the needs of different kitchen environments. demand, and cannot meet the lighting requirements of all users, resulting in poor user experience.

Contents of the invention

The object of the present invention is to provide a range hood lighting control system and method, which can automatically adjust the lighting parameters of the lamp according to the surrounding environment of the range hood, without the need for the user to manually turn on/off/adjust, effectively improving the user's Use experience.

In a first aspect, the present invention provides a range hood lighting control system, including: a sensor unit, a central processing unit, a lighting driver and a lighting lamp; the sensor unit is used to sense the target electrical signal of the surrounding environment, and The target electrical signal is sent to the central processing unit; wherein the target electrical signal at least includes: a light intensity signal; the central processing is used to determine a target PWM signal based on the target electrical signal, and send the target PWM signal To the lighting driver; the lighting driver is used to determine a target driving signal based on the target PWM signal, so as to adjust lighting parameters of the lighting lamp based on the target driving signal; wherein, the lighting parameters at least include: brightness.

In an optional embodiment, the sensor unit includes: an ambient light sensor; the lighting driver includes: a first driver; the lighting lamp includes: a monochromatic lighting lamp; the ambient light sensor is used to sense light in the surrounding environment intensity signal, and send the light intensity signal to the central processing unit; the central processing unit is used to determine a first PWM signal based on the light intensity signal, and send the first PWM signal to the first The driver; the first driver is used to determine a first driving signal based on the first PWM signal, so as to adjust the light-emitting duration of the monochromatic illuminating lamp in a unit PWM period based on the first driving signal; wherein, the The longer the lighting time, the higher the brightness of the lighting lamp.

In an optional embodiment, the sensor unit includes: an ambient light sensor; the lighting driver includes: a second driver and a third driver; the lighting lamp includes: a cold light lamp and a warm light lamp; An output terminal is connected with the input terminal of the second driver, and the output terminal of the second driver is connected with the driving terminal of the cold light lamp; the second output terminal of the central processing unit is connected with the third driver The input end of the third driver is connected to the drive end of the warm light; the ambient light sensor is used to sense the light intensity signal of the surrounding environment and send the light intensity signal to the central processing unit; the central processing unit is used to determine a second PWM signal and a third PWM signal based on the light intensity signal, and send the second PWM signal to the second driver, and send the The third PWM signal is sent to the third driver; the second driver is used to determine a second driving signal based on the second PWM signal, so as to adjust the cold light lamp in a unit PWM period based on the second driving signal The lighting duration of the warm light; the third driver is used to determine a third driving signal based on the third PWM signal, so as to adjust the lighting duration of the warm light in a unit PWM period based on the third driving signal; wherein, the The longer the total lighting time of the cold light and the warm light in a unit PWM period, the higher the brightness of the lighting.

In an optional embodiment, the lighting lamp includes a target number of lighting levels, and at each of the lighting levels, the ratio of the lighting duration of the cold light lamp to the lighting duration of the warm light lamp in a unit PWM cycle is the default value.

In an optional embodiment, the sensor unit further includes: a temperature sensor; the temperature sensor is used to sense the temperature signal of the surrounding environment, and send the temperature signal to the central processing unit; the central processing unit The device is used to determine a fourth PWM signal and a fifth PWM signal based on the light intensity signal and the temperature signal; and send the fourth PWM signal to the second driver, and send the fifth PWM signal to the The third driver; the second driver is used to determine a fourth drive signal based on the fourth PWM signal, so as to adjust the light-emitting duration of the cold light lamp in a unit PWM period based on the fourth drive signal; the The third driver is used to determine a fifth driving signal based on the fifth PWM signal, so as to adjust the light-emitting duration of the warm light in a unit PWM period based on the fifth driving signal; wherein, the temperature signal represented The temperature is directly proportional to the target ratio, and the target ratio represents the ratio of the light-emitting duration of the cold light lamp in a unit PWM period to the light-emitting time of the warm light lamp in a unit PWM period.

In an optional implementation manner, the light intensity represented by the light intensity signal is inversely proportional to the lighting duration of the illuminating lamp in a unit PWM period.

In an optional embodiment, the lighting driver includes one of the following: a triode transistor control loop, a field effect transistor control loop, a thyristor control loop, a digital analog switch loop, and a load switch control loop.

In a second aspect, the present invention provides a range hood lighting control method, the method is applied to the range hood lighting control system described in any one of the preceding embodiments, including: sensing a target electrical signal of the surrounding environment; wherein , the target electrical signal at least includes: a light intensity signal; determining a target PWM signal based on the target electrical signal; determining a target driving signal based on the target PWM signal, so as to adjust the lighting parameters of the lighting lamp based on the target driving signal; wherein , the lighting parameters at least include: brightness.

In a third aspect, the present invention provides an electronic device, including a memory and a processor, the memory stores a computer program that can run on the processor, and the processor implements the aforementioned implementation mode when executing the computer program The steps of the lighting control method for range hoods.

In a fourth aspect, the present invention provides a computer-readable storage medium, where computer instructions are stored in the computer-readable storage medium, and when the computer instructions are executed by a processor, the range hood lighting control method described in the foregoing implementation manners is realized.

The sensor unit in the range hood lighting control system provided by the present invention can sense the target electrical signal of the surrounding environment, the target electrical signal at least includes: light intensity signal, the central processing unit can output the target PWM signal to the lighting driver according to the target electrical signal, Furthermore, the lighting driver outputs a target driving signal for driving the lighting lamp, so as to adjust the lighting parameters of the lighting lamp, and the lighting parameters at least include: brightness. The system provided by the application of the present invention can automatically adjust the lighting parameters of the lamp according to the surrounding environment of the range hood without the need for the user to manually turn on/off/adjust, thus effectively improving the user experience.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is a functional block diagram of a range hood lighting control system provided by an embodiment of the present invention;

Fig. 2 is a functional block diagram of an optional range hood lighting control system provided by an embodiment of the present invention;

Fig. 3 is a functional block diagram of another optional range hood lighting control system provided by the embodiment of the present invention;

Fig. 4 is a functional module diagram of a range hood lighting control system with a temperature sensor provided by an embodiment of the present invention;

Fig. 5 is a flow chart of a lighting control method for range hoods provided by an embodiment of the present invention;

Fig. 6 is a schematic diagram of an electronic device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Embodiment one

Fig. 1 is a functional block diagram of a range hood lighting control system provided by an embodiment of the present invention. As shown in Fig. 1, the system includes: a sensor unit, a central processing unit, a lighting driver and a lighting lamp.

The sensor unit is used for sensing target electrical signals in the surrounding environment, and sending the target electrical signals to the central processing unit; wherein, the target electrical signals at least include: light intensity signals.

The central processing is used to determine the target PWM signal based on the target electrical signal, and send the target PWM signal to the lighting driver.

The lighting driver is used to determine a target driving signal based on the target PWM signal, so as to adjust lighting parameters of the lighting lamp based on the target driving signal; wherein, the lighting parameters at least include: brightness.

According to the above description of the system structure of the embodiment of the present invention, in order to realize the automatic control of the range hood lighting, the range hood lighting control system needs to be provided with a sensor unit, a central processing unit, a lighting driver and a lighting lamp connected in sequence, and the sensor unit At least it must be able to sense the light intensity of the surrounding environment, that is, the target electrical signal sent by the sensor unit to the central processing unit includes at least the light intensity signal, and the central processing unit can at least determine the current extraction signal after receiving the target electrical signal. The brightness of the surrounding environment of the range hood, and then combined with the preset lighting adjustment mechanism to determine the target PWM signal. In view of the limited parameters such as the amplitude of the target PWM signal output by the central processing unit, it is necessary to use the lighting driver to control the target PWM signal. processing, so as to output a target driving signal capable of driving the lighting lamp to emit light, and then adjust the lighting parameter of the lighting lamp based on the target driving signal.

The embodiment of the present invention does not specifically limit the light emission adjustment mechanism of the lighting lamp, and the user can set it according to the actual situation, as long as the lighting of the range hood can be automatically switched and automatically adjusted.

The sensor unit in the range hood lighting control system provided by the present invention can sense the target electrical signal of the surrounding environment, the target electrical signal at least includes: light intensity signal, the central processing unit can output the target PWM signal to the lighting driver according to the target electrical signal, Furthermore, the lighting driver outputs a target driving signal for driving the lighting lamp, so as to adjust the lighting parameters of the lighting lamp, and the lighting parameters at least include: brightness. The system provided by the application of the present invention can automatically adjust the lighting parameters of the lamp according to the surrounding environment of the range hood without the need for the user to manually turn on/off/adjust, thus effectively improving the user experience.

In an optional implementation manner, as shown in FIG. 2 , the sensor unit includes: an ambient light sensor; the lighting driver includes: a first driver; and the lighting lamp includes: a monochrome lighting lamp.

The ambient light sensor is used to sense the light intensity signal of the surrounding environment, and send the light intensity signal to the central processing unit.

The central processing unit is used to determine the first PWM signal based on the light intensity signal, and send the first PWM signal to the first driver.

The first driver is used to determine the first driving signal based on the first PWM signal, so as to adjust the lighting duration of the single-color lighting lamp in a unit PWM period based on the first driving signal; wherein, the longer the lighting duration, the higher the brightness of the lighting lamp.

If the sensor unit in the range hood lighting control system is only provided with an ambient light sensor and a single-color lighting lamp, then only the first driver needs to be provided to drive the single-color lighting lamp. Among them, the ambient light sensor is mainly composed of photosensitive elements. Photosensitive components such as photoresistors, photodiodes, phototransistors, silicon photocells, etc.

Specifically, in the case of setting a monochromatic lighting lamp on the range hood, the ambient light sensor is used to sense the light intensity signal and send it to the central processing unit. After the central processing unit receives the light intensity signal, it The light intensity represented by the intensity signal can determine the first PWM signal. After receiving the first PWM signal, the first driver processes it to obtain the first driving signal, and then uses the first driving signal to adjust the light-emitting duration of the single-color illuminating lamp in a unit PWM period.

Generally, the greater the positive pulse duty ratio in a unit PWM period, the longer the light-emitting time of the lighting lamp and the stronger the light-emitting brightness. In the embodiment of the present invention, the light intensity represented by the light intensity signal is inversely proportional to the light-emitting time of the lighting lamp in a unit PWM period. That is to say, the greater the light intensity of the environment (that is, the stronger the ambient light), the shorter the light-emitting time of the lighting lamp in a unit PWM cycle (that is, the darker the lighting lamp); on the contrary, the smaller the light intensity of the environment ( That is, the weaker the ambient light is, the longer the light-emitting time of the illuminating lamp in a unit PWM period (that is, the brighter the illuminating lamp is).

Users can set the threshold of light intensity according to actual needs. When the light intensity is higher than the target threshold, the lighting will be automatically turned off; when the light intensity is not greater than the target threshold, the lighting will be automatically turned on and adjusted according to the light intensity The luminous level of the light. That is to say, the light emission adjustment mechanism of the lighting provided by the embodiment of the present invention can realize the intelligent adjustment of switching and brightness of the lighting, thereby improving the experience of the user.

In an optional implementation manner, as shown in FIG. 3 , the sensor unit includes: an ambient light sensor; the lighting driver includes: a second driver and a third driver; and the lighting lamp includes: a cold light lamp and a warm light lamp.

The first output end of the central processing unit is connected with the input end of the second driver, and the output end of the second driver is connected with the driving end of the cold light lamp; the second output end of the central processing unit is connected with the input end of the third driver , the output end of the third driver is connected with the driving end of the warm light.

The ambient light sensor is used to sense the light intensity signal of the surrounding environment, and send the light intensity signal to the central processing unit.

The central processing unit is used for determining the second PWM signal and the third PWM signal based on the light intensity signal, sending the second PWM signal to the second driver, and sending the third PWM signal to the third driver.

The second driver is used to determine the second driving signal based on the second PWM signal, so as to adjust the light-emitting duration of the cold light lamp in a unit PWM period based on the second driving signal.

The third driver is used for determining a third driving signal based on the third PWM signal, so as to adjust the light-emitting duration of the warm light in a unit PWM period based on the third driving signal.

Wherein, the longer the total lighting time of the cold light lamp and the warm light lamp in a unit PWM cycle, the higher the brightness of the lighting lamp.

If the sensor unit in the lighting control system of the range hood is only provided with an ambient light sensor, and two lighting lamps, a cold light lamp and a warm light lamp, are installed at the same time, then two lighting drivers need to be provided correspondingly: the second driver and the third driver, to respectively Drive cold light and warm light. Specifically, according to the product structure relationship above, the second driver is used to drive the cold light, and the third driver is used to drive the warm light. Then, within a unit PWM cycle, the lighting can be adjusted by adjusting the ratio of cold light to warm light. The color temperature of the lamp.

The working principle of the ambient light sensor is the same as that of the monochrome lighting above, but it is different from the control method of the monochrome lighting. The central processing unit in this embodiment needs to determine the second PWM signal and the third PWM signal based on the light intensity signal. PWM signal to drive cold light and warm light through corresponding drivers respectively. By adjusting the light-emitting time of the cold light and warm light in a unit PWM cycle, the purpose of adjusting the ratio of cold light and warm light can be achieved, and then the adjustment of the color temperature of the lighting can be completed.

For easy understanding, the following is an example to illustrate the control of the brightness and color temperature of the lighting:

First, divide the unit PWM cycle into multiple equal parts, and each equal part is used as a scale of brightness. For example, if it is divided into 10 equal parts, if 10 equal parts of the scale are lit, the brightness of the lighting lamp will be the strongest; if 1 scale is lit, Then the brightness of the lighting lamp is the weakest.

Secondly, set the proportion of warm and cold light in each brightness scale to achieve color temperature control. Among them, the full cold light is: cold light ratio is 100% and warm light is 0%, and the full warm light is: cold light is 0% and warm light is 100%. Different color temperatures can appear.

The principle of brightness adjustment is the same as that of monochromatic lighting. For lighting with color temperature adjustment (including cold light and warm light), the same is the light intensity represented by the light intensity signal and the light emission of the lighting in a unit PWM cycle. The duration is inversely proportional, and the lighting duration at this time is the total lighting duration of the cold light and warm light in a unit PWM cycle.

In an optional embodiment, as shown in FIG. 4 , the lighting lamp includes a target number of luminous levels, and under each luminous level, the ratio of the luminous duration of the cold light lamp to the luminous duration of the warm light lamp in a unit PWM cycle is default value. That is to say, the user can set the ratio of the duration of warm and cold light in each light level according to actual needs, and then present different color temperatures under different brightness. Taking the unit PWM period as 100ms as an example, the first level of brightness can be cold light emission for 1ms, warm light emission for 9ms; the second level of brightness can be cold light emission for 3ms, warm light emission for 20ms; and so on, the tenth level of brightness can be cold light emission 30ms, warm light glow 50ms.

Although the adjustable color temperature control system provided above can adjust the color temperature of the lighting lamp while realizing the brightness adjustment of the lighting lamp, the color temperature of each luminous level is preset by the central processing unit, and cannot be adjusted automatically according to the surrounding environment. Adapt to regulation. In order to further improve the user experience of the lighting, the color temperature of the lighting is controlled to change according to the ambient temperature: the lower the ambient temperature, the warmer the luminous color temperature; the higher the ambient temperature, the cooler the luminous color temperature. For example, when used in winter, the ambient temperature is low, and the color temperature of the lighting is warmer, which brings a warmer and more comfortable feeling to the user. In view of this, in an optional implementation manner, the sensor unit further includes: a temperature sensor.

The temperature sensor is used to sense the temperature signal of the surrounding environment and send the temperature signal to the central processing unit.

The central processing unit is used to determine the fourth PWM signal and the fifth PWM signal based on the light intensity signal and the temperature signal; and send the fourth PWM signal to the second driver, and send the fifth PWM signal to the third driver.

The second driver is used to determine a fourth driving signal based on the fourth PWM signal, so as to adjust the light-emitting duration of the cold light lamp in a unit PWM period based on the fourth driving signal.

The third driver is used for determining the fifth driving signal based on the fifth PWM signal, so as to adjust the lighting duration of the warm light in a unit PWM period based on the fifth driving signal.

Among them, the longer the total lighting time of the cold light lamp and the warm light lamp in the unit PWM cycle, the higher the brightness of the lighting lamp; the temperature represented by the temperature signal is proportional to the target ratio, and the target ratio represents the temperature of the cold light lamp in the unit PWM cycle. The ratio of the lighting duration to the lighting duration of the warm light in a unit PWM period.

According to the above description, in this embodiment, the sensor unit in the range hood lighting control system is not only equipped with an ambient light sensor, but also a temperature sensor, and is the same as the previous embodiment, also equipped with a cold light and a warm light Two lighting lamps, two lighting drivers: second driver and third driver.

The working principle of the ambient light sensor is the same as the working principle of the monochrome lighting above, and will not be repeated here. When the central processing unit receives the light intensity signal output by the ambient light sensor and the temperature signal output by the temperature sensor, it can determine the fourth PWM according to the light intensity and temperature of the current environment and the preset light intensity-temperature adjustment mechanism. The functions of the signal and the fifth PWM signal, the fourth PWM signal and the fifth PWM signal are the same as those in the previous embodiment, and they are all used to drive the cold light lamp and the warm light lamp through corresponding drivers. However, it should be noted that in this embodiment, the positive pulse duty cycle in the unit PWM cycle of the fourth PWM signal and the fifth PWM signal is not set according to the light intensity of the environment, but is set by the central processing unit according to the ambient temperature. Adaptively adjusted. When the duty cycle of the fourth PWM signal and the fifth PWM signal is determined, the ratio of the light-emitting duration of the cold light to the light-emitting duration of the warm light can be determined, and then the color temperature of the lighting lamp can be determined. That is to say, at this time, the color temperature of the lighting lamp changes according to the ambient temperature.

In the embodiment of the present invention, the temperature represented by the temperature signal is directly proportional to the target ratio, and the target ratio represents the ratio of the light-emitting duration of the cold light lamp in the unit PWM cycle to the light-emitting time of the warm light lamp in the unit PWM cycle, and then can reach The lower the ambient temperature, the warmer the luminous color temperature; the higher the ambient temperature, the cooler the luminous color temperature.

Similarly, the light intensity represented by the light intensity signal is inversely proportional to the light-emitting time of the lighting lamp in a unit PWM period. The lighting duration in this embodiment is the total lighting duration of the cold light lamp and the warm light lamp in a unit PWM period. That is, the stronger the ambient light, the shorter the light-emitting time of the lighting lamp, and the dimmer the lighting lamp; the weaker the ambient light, the longer the lighting time of the lighting lamp, and the brighter the lighting lamp.

In an optional embodiment, the lighting lamp includes: LED lighting lamp, and the lighting driver includes one of the following: triode transistor control loop, field effect transistor control loop, thyristor control loop, digital analog switch loop, load switch control circuit. The above-mentioned loops are commonly used lighting lamp driving loops in the field, and the structure of each loop will not be repeated here.

To sum up, the range hood lighting control system provided by the embodiment of the present invention uses the ambient light sensor to detect the intensity of ambient light, or further combines the temperature sensor to detect the ambient temperature. One-way PWM duty cycle controls the luminous intensity of single-color lighting, or controls the different color temperature and luminous level of cold and warm two-color lighting through two-way PWM duty cycle, realizing fully automatic intelligent dimming, eliminating the need for manual adjustment by users.

Because the luminous intensity and color temperature of the lighting lamp are different under different light environments, it can effectively reduce the power consumption of the lighting lamp and achieve the purpose of energy saving. It is not full power lighting in the environment, which can prolong the service life of the lighting lamp. In addition, in the case of using a temperature sensor, the lighting can also achieve the effect of rendering a beautiful environment, enhancing the user's visual sense, and improving the user experience.

Embodiment two

The embodiment of the present invention also provides a range hood lighting control method. The range hood lighting control method is mainly applied to the range hood lighting control system provided in the first embodiment above. The range hood provided in the embodiment of the present invention is described below The lighting control method is introduced in detail.

Fig. 5 is a flow chart of a lighting control method for range hoods provided by an embodiment of the present invention. As shown in Fig. 5, the device mainly includes the following steps:

Step S102, sensing target electrical signals of the surrounding environment.

Wherein, the target electrical signal at least includes: a light intensity signal.

Step S104, determining a target PWM signal based on the target electrical signal.

Step S106, determining a target driving signal based on the target PWM signal, so as to adjust the lighting parameters of the lighting lamp based on the target driving signal.

Wherein, the lighting parameters at least include: brightness.

The range hood lighting control method provided by the present invention can sense the target electrical signal of the surrounding environment, the target electrical signal at least includes: a light intensity signal, output a target PWM signal according to the target electrical signal, and then determine the driving signal according to the target PWM signal. The target driving signal of the illuminating lamp is used to adjust the luminous parameters of the illuminating lamp, and the luminous parameters at least include: brightness. Applying the method provided by the present invention can automatically adjust the lighting parameters of the lamp according to the surrounding environment of the range hood without the need for the user to manually turn on/off/adjust, effectively improving the user experience.

Embodiment Three

Referring to Fig. 6, the embodiment of the present invention provides a kind of electronic equipment, and this electronic equipment comprises: processor 60, memory 61, bus 62 and communication interface 63, described processor 60, communication interface 63 and memory 61 are connected by bus 62 ; The processor 60 is used to execute executable modules stored in the memory 61, such as computer programs.

Wherein, the memory 61 may include a high-speed random access memory (RAM, Random Access Memory), and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 63 (which may be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used.

The bus 62 can be an ISA bus, a PCI bus or an EISA bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one double-headed arrow is used in FIG. 6 , but it does not mean that there is only one bus or one type of bus.

Wherein, the memory 61 is used to store a program, and the processor 60 executes the program after receiving an execution instruction, and the method performed by the process-defining device disclosed in any of the above-mentioned embodiments of the present invention can be applied to the processor 60, or implemented by the processor 60.

The processor 60 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 60 or an instruction in the form of software. The above-mentioned processor 60 can be a general-purpose processor, including a central processing unit (Central Processing Unit, referred to as CPU), a network processor (Network Processor, referred to as NP), etc.; it can also be a digital signal processor (Digital Signal Processing, referred to as DSP) , Application Specific Integrated Circuit (ASIC for short), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the methods disclosed in the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory 61, and the processor 60 reads the information in the memory 61, and completes the steps of the above method in combination with its hardware.

A computer program product of a range hood lighting control system and method provided in an embodiment of the present invention includes a computer-readable storage medium storing non-volatile program code executable by a processor, and the program code includes instructions It can be used to execute the methods described in the foregoing method embodiments. For specific implementation, refer to the method embodiments, and details are not repeated here.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium executable by a processor. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. A range hood lighting control system, comprising: the device comprises a sensor unit, a central processing unit, an illumination driver and an illumination lamp;

the sensor unit is used for sensing a target electric signal of the surrounding environment and sending the target electric signal to the central processor; wherein the target electrical signal comprises at least: a light intensity signal;

the central processing is used for determining a target PWM signal based on the target electric signal and sending the target PWM signal to the lighting driver;

the lighting driver is used for determining a target driving signal based on the target PWM signal so as to adjust the lighting parameters of the lighting lamp based on the target driving signal; wherein the lighting parameters comprise at least: brightness.

2. The range hood lighting control system of claim 1, wherein the sensor unit comprises: an ambient light sensor; the lighting driver includes: a first driver; the illumination lamp includes: a monochromatic lighting lamp;

the environment light sensor is used for sensing a light intensity signal of the surrounding environment and sending the light intensity signal to the central processing unit;

the central processing unit is used for determining a first PWM signal based on the light intensity signal and sending the first PWM signal to the first driver;

the first driver is used for determining a first driving signal based on the first PWM signal so as to adjust the light-emitting time length of the monochromatic lighting lamp in a unit PWM period based on the first driving signal; wherein the longer the light emitting time, the higher the brightness of the illumination lamp.

3. The range hood lighting control system of claim 1, wherein the sensor unit comprises: an ambient light sensor; the lighting driver includes: a second driver and a third driver; the illumination lamp includes: cold light lamps and warm light lamps;

the first output end of the central processing unit is connected with the input end of the second driver, and the output end of the second driver is connected with the driving end of the cold light lamp; the second output end of the central processing unit is connected with the input end of the third driver, and the output end of the third driver is connected with the driving end of the warm light lamp;

the environment light sensor is used for sensing a light intensity signal of the surrounding environment and sending the light intensity signal to the central processing unit;

the central processor is used for determining a second PWM signal and a third PWM signal based on the light intensity signal, sending the second PWM signal to the second driver and sending the third PWM signal to the third driver;

the second driver is used for determining a second driving signal based on the second PWM signal so as to adjust the light-emitting duration of the cold light lamp in a unit PWM period based on the second driving signal;

the third driver is used for determining a third driving signal based on the third PWM signal so as to adjust the light-emitting duration of the warm light lamp in a unit PWM period based on the third driving signal;

wherein the longer the total light emitting time of the cold light lamp and the warm light lamp in a unit PWM cycle is, the higher the brightness of the illumination lamp is.

4. The range hood lighting control system of claim 3, wherein the illumination lamp comprises a target number of illumination levels, and a ratio of an illumination duration of the cold light lamp to an illumination duration of the warm light lamp per PWM period is a preset value for each of the illumination levels.

5. The range hood lighting control system of claim 3, wherein the sensor unit further comprises: a temperature sensor;

the temperature sensor is used for sensing a temperature signal of the ambient environment and sending the temperature signal to the central processing unit;

the central processor is used for determining a fourth PWM signal and a fifth PWM signal based on the light intensity signal and the temperature signal; and sending the fourth PWM signal to the second driver and the fifth PWM signal to the third driver;

the second driver is used for determining a fourth driving signal based on the fourth PWM signal so as to adjust the light-emitting duration of the cold light lamp in a unit PWM period based on the fourth driving signal;

the third driver is used for determining a fifth driving signal based on the fifth PWM signal so as to adjust the light-emitting duration of the warm light lamp in a unit PWM period based on the fifth driving signal;

the temperature represented by the temperature signal is in direct proportion to a target ratio, and the target ratio represents the ratio of the luminous duration of the cold light lamp in a unit PWM period to the luminous duration of the warm light lamp in the unit PWM period.

6. The range hood lighting control system of any one of claims 2-5, wherein the light intensity represented by the light intensity signal is inversely proportional to the length of time the light is illuminated per PWM period.

7. The range hood lighting control system of claim 1, wherein the lighting driver comprises one of: the circuit comprises a triode transistor control loop, a field effect transistor control loop, a silicon controlled rectifier control loop, a digital analog switch loop and a load switch control loop.

8. A range hood lighting control method applied to the range hood lighting control system of any one of claims 1 to 7, comprising:

sensing a target electrical signal of a surrounding environment; wherein the target electrical signal comprises at least: a light intensity signal;

determining a target PWM signal based on the target electrical signal;

determining a target driving signal based on the target PWM signal to adjust a lighting parameter of a lighting lamp based on the target driving signal; wherein the lighting parameters comprise at least: brightness.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program operable on the processor, and wherein the processor implements the steps of the range hood lighting control method of claim 8 when executing the computer program.

10. A computer readable storage medium, wherein the computer readable storage medium stores computer instructions, which when executed by a processor, implement the range hood lighting control method of claim 8.

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