Semiconductor lamp control method and intelligent electric appliance

Abstract

The invention relates to a semiconductor lamp control method and an intelligent electric appliance, which are applied to the field of intelligent electric appliances, and the semiconductor lamp control method comprises the following steps: driving a semiconductor lamp to illuminate through a high-frequency sine wave current signal; the high-frequency sine wave current signal is obtained by modulating an original current signal for driving the semiconductor lamp to illuminate; collecting a current output signal output by the photoelectric sensor when the semiconductor lamp illuminates; determining the attenuation degree of the semiconductor lamp through a lock-in amplifier based on the phase difference between the high-frequency modulation current signal and the current output signal; and controlling the semiconductor lamp based on the attenuation degree. According to the invention, the problem of illumination response delay caused by aging of the semiconductor lamp is solved.

Description

Technical Field

[0001] This application relates to the field of smart appliances, and in particular to a semiconductor lighting control method and a smart appliance. Background Technology

[0002] With the improvement of people's living standards and the promotion and popularization of technologies such as the Internet, big data, artificial intelligence, and voice interaction, more and more traditional lifestyles are gradually changing, and the use of home appliances is gradually moving towards intelligence. While bringing more convenience to users, the functions of various home appliances are also becoming more diversified. Smart range hoods are essential appliances in daily kitchens. To facilitate cooking, smart range hoods are also equipped with semiconductor lights, such as LED lights, as light sources for the cooking area.

[0003] However, as semiconductor lamps are used for longer periods, they gradually age, leading to delayed lighting response and a poor cooking experience for users.

[0004] There is currently no effective solution to the problem of delayed lighting response caused by the aging of semiconductor lamps in related technologies. Summary of the Invention

[0005] This embodiment provides a semiconductor lighting control method and a smart appliance to solve the problem of delayed lighting response caused by the aging of semiconductor lighting fixtures in related technologies.

[0006] In a first aspect, this embodiment provides a semiconductor lighting control method, applied to a smart appliance including a semiconductor lighting fixture, wherein the semiconductor lighting fixture is equipped with a photoelectric sensor and a lock-in amplifier; the photoelectric sensor is used to convert the light signal generated by the illumination of the semiconductor lighting fixture into an electrical signal for output; the method includes:

[0007] The semiconductor lamp is driven by a high-frequency sinusoidal current signal; the high-frequency sinusoidal current signal is obtained by modulating the original current signal that drives the semiconductor lamp.

[0008] The photoelectric sensor outputs a current signal when the semiconductor lamp is illuminating the circuit.

[0009] The attenuation level of the semiconductor lamp is determined by the lock-in amplifier based on the phase difference between the high-frequency modulated current signal and the current output signal.

[0010] The semiconductor lamp is controlled based on the degree of attenuation.

[0011] In some embodiments, the semiconductor lamp is provided with a light diffuser;

[0012] When the semiconductor lamp provides illumination, the generated light signal is reflected by the light diffuser and then enters the photoelectric sensor.

[0013] In some embodiments, determining the attenuation level of the semiconductor lamp based on the phase difference between the high-frequency modulated current signal and the current output signal includes:

[0014] Obtain the initial phase in the high-frequency modulation signal and the delayed phase in the current output signal;

[0015] Calculate the phase difference between the initial phase and the delayed phase;

[0016] The attenuation level of the semiconductor lamp is determined based on the phase difference.

[0017] In some embodiments, determining the attenuation level of the semiconductor lamp based on the phase difference includes:

[0018] Determine whether the phase difference is within a preset phase threshold range; the preset phase threshold range is the phase threshold range corresponding to the light signal of the semiconductor lamp that needs to be compensated for light attenuation.

[0019] If the phase difference is determined to be within the preset phase threshold range, the compensated pulse width modulation duty cycle of the current output signal of the semiconductor lamp is determined based on the phase difference, the initial phase, and the pulse width modulation duty cycle of the original current signal.

[0020] In some embodiments, determining the attenuation level of the semiconductor lamp based on the phase difference further includes:

[0021] If the phase difference is determined to be below the lower limit of the preset phase threshold range, the semiconductor lamp is driven to illuminate by a high-frequency sinusoidal current signal.

[0022] In some embodiments, determining the attenuation level of the semiconductor lamp based on the phase difference further includes:

[0023] If the phase difference exceeds the upper limit of the preset phase threshold range, a lamp replacement signal is generated.

[0024] In some embodiments, prior to driving the semiconductor lamp with a high-frequency sinusoidal current signal, the method further includes:

[0025] Determine whether the current time is within the detection cycle of the semiconductor lamp;

[0026] When the current time is within the detection cycle of the semiconductor lamp, the semiconductor lamp is driven to illuminate by a high-frequency sinusoidal current signal;

[0027] When the current time is not within the detection cycle of the semiconductor lamp, the semiconductor lamp is driven to illuminate by the original current signal.

[0028] Secondly, this embodiment provides a smart appliance, which includes a controller and a semiconductor lamp; the controller uses the semiconductor lamp control method as described in any one of the first aspects to control the illumination of the semiconductor lamp; the smart appliance is one of a smart range hood and a smart refrigerator.

[0029] Thirdly, this embodiment provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the semiconductor lighting control method described in any one of the first aspects above.

[0030] Fourthly, this embodiment provides a storage medium storing a computer program that, when executed by a processor, implements the semiconductor lighting control method described in any one of the first aspects above.

[0031] Compared with related technologies, the semiconductor lamp control method and smart appliance provided in this embodiment drive the semiconductor lamp through high-frequency modulation and use a lock-in amplifier to determine the current attenuation level of the semiconductor lamp based on the phase difference between the output signal collected by the photoelectric sensor and the high-frequency modulated current signal. Based on the current attenuation level, the semiconductor lamp is compensated to solve the problem of lighting response delay caused by the aging of the semiconductor lamp.

[0032] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0034] Figure 1 This is a hardware structure block diagram of the terminal of the semiconductor lighting control method provided in the embodiments of this application;

[0035] Figure 2 This is a flowchart of the semiconductor lighting control method provided in the embodiments of this application;

[0036] Figure 3 This is a structural schematic diagram of the intelligent range hood provided in this specific embodiment;

[0037] Figure 4 This is a schematic diagram of the system signal transmission of the intelligent range hood provided in this specific embodiment;

[0038] Figure 5 This is a flowchart of the LED lighting control method for an intelligent range hood provided in this specific embodiment.

[0039] Reference numerals: 10, range hood light assembly; 11, LED bead; 12, photoelectric sensor; 13, light diffuser; 14, lamp cover; 20, smoke hood; 30, range hood fan; 102, processor; 104, memory; 106, transmission equipment; 108, input / output device. Detailed Implementation

[0040] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0041] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these” used in this application do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to these processes, methods, products, or devices. Words such as “connected,” “linked,” and “coupled” used in this application are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. Normally, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects.

[0042] The method embodiments provided in this example can be executed on a terminal, computer, or similar computing device. For example, it can run on a terminal. Figure 1This is a hardware structure block diagram of the terminal of the semiconductor lighting control method provided in this application embodiment. For example... Figure 1 As shown, a terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 and a memory 104 for storing data are also included. The processor 102 may be, but is not limited to, a microprocessor (MCU) or a programmable logic device (FPGA). The terminal may also include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that… Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the terminal described above. For example, the terminal may also include components that are larger than... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown are illustrated.

[0043] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the semiconductor lighting control method in this embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the aforementioned method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0044] The transmission device 106 is used to receive or send data via a network. This network includes a wireless network provided by the terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 can be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0045] To enhance the user experience, current smart appliances typically include lighting fixtures. Due to their high efficiency, energy saving, environmental friendliness, long lifespan, and zero-latency response, semiconductor lamps are commonly used in general lighting fixtures. However, semiconductor lamps generate a significant amount of heat during operation, and as they age, they experience light decay, causing their color temperature to shift towards higher color temperatures. This results in delayed lighting response and negatively impacts the user's lighting experience.

[0046] To address the problem of delayed lighting response caused by the aging of existing semiconductor lamps, this embodiment provides a semiconductor lamp control method, which is applied to a smart appliance including a semiconductor lamp. The semiconductor lamp is equipped with a photoelectric sensor and a lock-in amplifier; the photoelectric sensor is used to convert the light signal generated by the semiconductor lamp into an electrical signal for output. Figure 2 This is a flowchart of the semiconductor lighting control method provided in the embodiments of this application, such as... Figure 2 As shown, the process includes the following steps:

[0047] Step S210: The semiconductor lamp is driven by a high-frequency sinusoidal current signal; the high-frequency sinusoidal current signal is obtained by modulating the original current signal driving the semiconductor lamp; the current output signal output by the photoelectric sensor is collected when the semiconductor lamp is lit.

[0048] In order to achieve lighting in smart appliances, these appliances are generally equipped with a controller within the semiconductor lamp to receive lighting commands and respond to control the lighting. When a user needs lighting, the controller typically sends a command to the driver chip of the semiconductor lamp, thereby controlling the lamp to provide lighting according to the user's current cooking lighting needs. In this step, when driving the semiconductor lamp, a high-frequency sinusoidal current needs to be modulated and generated first, and then the semiconductor lamp is driven by the high-frequency sinusoidal current signal for lighting. Preferably, a 1kHz high-frequency sinusoidal current signal is used to drive the semiconductor lamp. The frequency of this signal can be any high-frequency sinusoidal current signal frequency suitable for driving semiconductor lamps, such as 1kHz or 2kHz, and is not specifically limited here.

[0049] By modulating the driver chip of the semiconductor lamp to generate a high-frequency sinusoidal current signal, the semiconductor lamp can be driven to provide illumination. This facilitates smooth dimming of the light during the illumination of the semiconductor lamp and reduces electromagnetic interference.

[0050] When a semiconductor lamp is driven to illuminate based on a high-frequency sinusoidal current signal, a light signal is generated; preferably, a light diffuser is provided on the semiconductor lamp; when the semiconductor lamp is illuminating, the generated light signal is reflected by the light diffuser and then enters the photoelectric sensor.

[0051] The light signal is received by a photoelectric sensor set on the semiconductor lamp, and the light signal is converted into an electrical signal, i.e., a current output signal, inside.

[0052] Step S220: The attenuation level of the semiconductor lamp is determined by using a lock-in amplifier based on the phase difference between the high-frequency modulated current signal and the current output signal.

[0053] In this step, after the photoelectric sensor outputs a current output signal, the current output signal needs to be processed. Then, based on the high-frequency modulated current signal and the current output signal corresponding to the semiconductor lamp, the phase delay, i.e. the phase difference, generated by the high-frequency sinusoidal current generated by the modulation after passing through the semiconductor lamp is determined. Then, the attenuation degree of the current semiconductor lamp is determined by the phase difference.

[0054] Specifically, the initial phase in the high-frequency modulation signal and the delayed phase in the current output signal are obtained; the phase difference between the initial phase and the delayed phase is calculated; and the attenuation degree of the semiconductor lamp is determined based on the phase difference.

[0055] Preferably, the phase difference between the high-frequency modulated current signal and the current output signal is detected using digital phase-locked loop (DPLL) technology in the lock-in amplifier. A digital phase-locked loop (DPLL) is an electronic control system used to synchronize the frequency and phase of signals. In other embodiments, the phase difference between the two signals can also be determined using a phase detector or quadrature demodulation method, depending on the specific application scenario, and is not specifically limited here.

[0056] Step S230: Control the semiconductor lamps based on the degree of attenuation.

[0057] In semiconductor lamps, there is no phase delay between the output current signal and the high-frequency modulated current signal when there is no light decay. Conversely, when light decay occurs, the corresponding current output signal will exhibit a significant phase delay. Therefore, the presence or absence of phase delay in the output signal of a semiconductor lamp can be used to determine whether the lamp is experiencing light decay.

[0058] After determining the phase difference between the high-frequency modulated current signal and the current output signal, it is necessary to determine whether attenuation compensation for the semiconductor lamp is needed based on the attenuation degree of the semiconductor lamp corresponding to the phase difference and the attenuation degree determined by the phase difference.

[0059] The specific methods in this step include: determining whether the phase difference is within a preset phase threshold range; the preset phase threshold range is the phase threshold range corresponding to the light signal of the semiconductor lamp that needs to be compensated for light attenuation; if the phase difference is determined to be within the preset phase threshold range, the compensation pulse width modulation duty cycle of the current output signal of the semiconductor lamp is determined based on the phase difference, the initial phase, and the pulse width modulation duty cycle of the original current signal.

[0060] If the phase difference does not reach the lower limit of the preset phase threshold range, the semiconductor lamp is driven by a high-frequency sinusoidal current signal.

[0061] If the phase difference exceeds the upper limit of the preset phase threshold range, a lamp replacement signal is generated.

[0062] Through the above steps, the controller modulates the high-frequency modulation signal to drive the semiconductor lamp, and uses a lock-in amplifier to determine the phase difference between the output signal collected by the photoelectric sensor and the high-frequency modulation current signal. Then, based on the phase difference, the current attenuation level of the semiconductor lamp is determined, and the semiconductor lamp is compensated according to the current attenuation level to solve the problem of lighting response delay caused by the aging of the semiconductor lamp.

[0063] In some embodiments, before driving the semiconductor lamp with a high-frequency sinusoidal current signal, the method further includes: determining whether the current time is within the detection cycle of the semiconductor lamp; if the current time is within the detection cycle of the semiconductor lamp, driving the semiconductor lamp with a high-frequency sinusoidal current signal; if the current time is not within the detection cycle of the semiconductor lamp, driving the semiconductor lamp with the original current signal.

[0064] Since light decay in semiconductor lamps is continuous during use, real-time monitoring of these lamps would consume significant energy, and the detected light decay results might be similar over a period of time. Therefore, to reduce the energy consumption for light decay detection while still obtaining timely information on the lamps' light decay status, a detection cycle is established. The lamps are only illuminated using a high-frequency sinusoidal current signal when the detection cycle has elapsed; otherwise, they are illuminated using the original current signal, thus minimizing the energy consumption for light decay detection.

[0065] This embodiment provides a smart appliance, which includes a controller and a semiconductor lamp; the controller uses the above-described semiconductor lamp control method to control the illumination of the semiconductor lamp; the smart appliance is one of a smart range hood and a smart refrigerator.

[0066] The present embodiment will be described and explained below through specific examples.

[0067] In one specific embodiment, taking a smart range hood as an example of a smart appliance, semiconductor lighting fixtures such as LED lights are typically turned on at the same time as the range hood fan is turned on, in order to enhance the user's cooking lighting experience. Figure 3 This is a structural schematic diagram of the intelligent range hood provided in this specific embodiment. (Reference) Figure 3 The intelligent range hood is equipped with a range hood fan 30, a smoke collection hood 20, and a range hood light assembly 10. The smoke collection hood 20 is located below the range hood fan 30, and the range hood light assembly 10 is located on the inner wall of the smoke collection hood 20. The range hood light assembly 10 includes LED beads 11, a photoelectric sensor 12, a light distribution plate 13, and a lamp cover plate 14.

[0068] The intelligent range hood also includes a controller, memory, fan drive module, communication module, and switch module to realize the range hood's functions such as absorbing cooking fumes and providing lighting. A photoelectric sensor is connected to a signal processing module. The above modules are not included in... Figure 3 As shown in the image.

[0069] It should be noted that the above modules can be functional modules or program modules, and can be implemented through software or hardware. For modules implemented through hardware, the above modules can reside in the same processor; or the above modules can be located in different processors in any combination.

[0070] Figure 4 This is a schematic diagram of the system signal transmission of the intelligent range hood provided in this specific embodiment. (Reference) Figure 4 The main controller in a smart range hood, after receiving a fume adsorption command from the user, controls the range hood's fan to adsorb the fumes in the space currently occupied by the smart range hood, and so on. Figure 4 As shown, the oil fumes it adsorbs are drawn into the oil fume channel by the direction of the airflow and the speed control of the range hood fan, so as to achieve the effect of adsorbing the oil fumes generated in the current cooking scenario.

[0071] The driver chip in the smart range hood is used to drive the LED lights normally, or to modulate and generate a high-frequency sine wave current such as 1kHz to drive the LED lights; the photodetector contains a silicon photocell or photodiode to receive the modulated light emitted by the LED lights; the signal processing unit is connected to the photodetector and includes a lock-in amplifier, using digital phase-locked loop technology to detect the phase difference between signals; the main controller is used to calculate the phase difference, determine the attenuation of the LED lights, and implement corresponding compensation control methods.

[0072] After receiving the lighting control command sent by the user, the main controller in the smart range hood needs to drive the LED lights to provide normal lighting based on the original current signal. At this time, the LED beads in the LED lights work, and the light diffuser makes the light generated by the LED lights evenly distributed throughout the entire stove area, eliminating obvious dark areas and bright spots.

[0073] Under normal lighting conditions, the LED lights are driven by the original current signal. The photodetector acquires the light signal generated when the LED is working and converts the light signal into an electrical signal. Based on the electrical signal, it senses the current light intensity and then adaptively adjusts the brightness of the LED lights.

[0074] When the detection cycle is reached, the LED lights need to undergo light decay detection. In this case, the original current signal driving the semiconductor lighting needs to be modulated by the driver chip to obtain a high-frequency sinusoidal current signal, which then drives the LED lights for illumination. Subsequently, the photodetector receives the light signal generated by the LED lighting and converts it into a current output signal, which is then processed. Specifically, a lock-in amplifier is used to process the high-frequency sinusoidal current signal and the current output signal, specifically by obtaining the phase difference between these two signals.

[0075] Subsequently, the main controller determines the attenuation level of the LED beads in the current LED lamp based on the phase difference between the signals, and then determines the corresponding LED bead control method based on the attenuation level, so as to control the illumination of the LED lamp through the driver chip. The photodetector here is the photoelectric sensor in the aforementioned embodiment, and the main controller is the controller in the aforementioned embodiment.

[0076] Furthermore, the suction power of the fan inside the fume hood creates an effective negative pressure zone above the stove to capture the fumes generated in the current environment and prevent them from overflowing to other places.

[0077] The main controller controls the driver cells to drive the LED lights, and the driving current for illumination within time t is... It can be represented as:

[0078] ;

[0079] Where I0 represents the no-load current, f0 represents the initial frequency, and t represents the illumination time of the current-driven LED lamp.

[0080] Under ideal conditions, the instantaneous response of the LED lamp's light output to the aforementioned driving current... It can be represented as:

[0081] ;

[0082] Where I0 represents the no-load current, f0 represents the initial frequency, t represents the illumination time of the current-driven LED lamp, and K0 represents the luminous efficiency of the LED lamp.

[0083] However, in actual lighting conditions, the aging and light decay of LED lamps will cause a time delay in the output light of the LED lamps. This results in the true instantaneous response of the light output of LED lights. for:

[0084] ;

[0085] ;

[0086] in, The output light of the LED lamp is represented by I0, the no-load current is represented by f0, the initial frequency is represented by t, the illumination time of the LED lamp driven by the current is represented by K0, and the luminous efficiency of the LED lamp is represented by K0.

[0087] Based on this, the photodetector receives the light signal generated by the LED lamp and outputs the corresponding current output signal. It can be represented as:

[0088] ;

[0089] in, G represents the actual instantaneous response of the light output of the LED lamp, and G represents the photoelectric conversion coefficient of the photodetector.

[0090] Subsequently, from the driving current Extract the reference signal from the reference signal. It can be represented as:

[0091] ;

[0092] Extract the current output signal using a lock-in amplifier. and reference signal phase difference between Due to the aging process that occurs during the use of LED lights, their carrier lifetime increases, which in turn increases the time delay in the generation of the output light. At this time, the current output signal and reference signal phase difference between It will increase, therefore, it can be measured by the phase difference between the currently acquired signals. Changes This allows us to determine the degree of photoaging of current LED lighting fixtures.

[0093] Figure 5 This is a flowchart of the LED lighting control method for an intelligent range hood provided in this specific embodiment, for reference. Figure 5 First, with the LED lights in the smart range hood powered on, it is determined whether the current time has reached the LED light's detection cycle. For example, the current time can represent the current usage time of the LED lights or the current power-on time of the smart range hood. If the current time has reached the LED light's detection cycle, the main controller in the smart range hood initiates the high-frequency modulation drive for the corresponding LED light group and acquires the current output signal corresponding to the LED light's output light signal through a lock-in amplifier. And based on the reference signal in the current output signal and the high-frequency sinusoidal current signal. Phase difference change .

[0094] Based on the change in phase difference The phase difference is compared with the preset phase threshold range [a, b]. If the phase difference is greater than b, it indicates that the LED lamp is severely aged and needs to be replaced. If the phase difference is less than a, it indicates that the LED lamp has not experienced aging and light decay, meaning it has not reached the aging compensation stage. In this case, the current drive current state of the LED lamp needs to be maintained until the next detection cycle.

[0095] If the phase difference is within the range of [a, b], it indicates that the LED lamp is aging but not severely and can be compensated. Therefore, it is necessary to calculate the compensation LED lamp drive current and drive the LED lamp based on the new compensation current.

[0096] Specifically, this can be achieved by increasing the PWM drive duty cycle of LED lamps exhibiting aging characteristics, thereby maintaining the color temperature of these aging LED lamps at a normal lighting level. The duty cycle D of the compensated drive current is then increased. new It can be represented as:

[0097] ;

[0098] Where D0 represents the factory-preset duty cycle of the drive current PWM. This represents the reference signal in the current output signal and the high-frequency sinusoidal current signal. The phase difference between them It represents the phase of the reference signal in a high-frequency sinusoidal current signal.

[0099] Furthermore, if the LED luminaire is equipped with LED beads of multiple color temperatures, then the LED beads of different color temperatures can be independently detected and compensated based on the above lighting control method to maintain the normal lighting color temperature and avoid lighting response delay of the LED luminaire.

[0100] It should be noted that the steps shown in the above process or in the flowcharts in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions.

[0101] This embodiment also provides an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0102] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0103] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0104] S1 drives the semiconductor lamp lighting through a high-frequency sinusoidal current signal; the high-frequency sinusoidal current signal is obtained by modulating the original current signal that drives the semiconductor lamp lighting.

[0105] S2 collects the current output signal from the photoelectric sensor when the semiconductor lamp is illuminating.

[0106] S3, through a lock-in amplifier, determines the attenuation level of the semiconductor lamp based on the phase difference between the high-frequency modulated current signal and the current output signal; based on the attenuation level, it controls the semiconductor lamp.

[0107] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated in this embodiment.

[0108] Furthermore, in conjunction with the semiconductor lighting control method provided in the above embodiments, this embodiment can also provide a storage medium for implementation. The storage medium stores a computer program; when executed by a processor, the computer program implements any of the semiconductor lighting control methods described in the above embodiments.

[0109] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0110] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0111] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0112] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A method for controlling semiconductor lighting fixtures, characterized in that, It is applied to smart electrical appliances including semiconductor lamps, wherein the semiconductor lamps are equipped with photoelectric sensors and lock-in amplifiers; The photoelectric sensor is used to convert the light signal generated by the semiconductor lamp into an electrical signal for output; the method includes: The semiconductor lamp is driven by a high-frequency sinusoidal current signal; the high-frequency sinusoidal current signal is obtained by modulating the original current signal that drives the semiconductor lamp. The photoelectric sensor outputs a current signal when the semiconductor lamp is illuminating the circuit. The attenuation level of the semiconductor lamp is determined by the lock-in amplifier based on the phase difference between the high-frequency modulated current signal and the current output signal. The semiconductor lamp is controlled based on the degree of attenuation.

2. The semiconductor lighting control method according to claim 1, characterized in that, The semiconductor lamp is provided with a light diffuser. When the semiconductor lamp provides illumination, the generated light signal is reflected by the light diffuser and then enters the photoelectric sensor.

3. The semiconductor lighting control method according to claim 1, characterized in that, Determining the attenuation level of the semiconductor lamp based on the phase difference between the high-frequency modulated current signal and the current output signal includes: Obtain the initial phase in the high-frequency modulation signal and the delayed phase in the current output signal; Calculate the phase difference between the initial phase and the delayed phase; The attenuation level of the semiconductor lamp is determined based on the phase difference.

4. The semiconductor lighting control method according to claim 3, characterized in that, Determining the attenuation level of the semiconductor lamp based on the phase difference includes: Determine whether the phase difference is within a preset phase threshold range; the preset phase threshold range is the phase threshold range corresponding to the light signal of the semiconductor lamp that needs to be compensated for light attenuation. If the phase difference is determined to be within the preset phase threshold range, the compensated pulse width modulation duty cycle of the current output signal is determined based on the phase difference, the initial phase, and the pulse width modulation duty cycle of the original current signal.

5. The semiconductor lighting control method according to claim 4, characterized in that, The step of determining the attenuation level of the semiconductor lamp based on the phase difference further includes: If the phase difference is determined to be below the lower limit of the preset phase threshold range, the semiconductor lamp is driven to illuminate by a high-frequency sinusoidal current signal.

6. The semiconductor lighting control method according to claim 4, characterized in that, The step of determining the attenuation level of the semiconductor lamp based on the phase difference further includes: If the phase difference exceeds the upper limit of the preset phase threshold range, a lamp replacement signal is generated.

7. The semiconductor lighting control method according to any one of claims 1 to 6, characterized in that, Before driving the semiconductor lamp with a high-frequency sinusoidal current signal, the method further includes: Determine whether the current time is within the detection cycle of the semiconductor lamp; When the current time is within the detection cycle of the semiconductor lamp, the semiconductor lamp is driven to illuminate by a high-frequency sinusoidal current signal; When the current time is not within the detection cycle of the semiconductor lamp, the semiconductor lamp is driven to illuminate by the original current signal.

8. A smart appliance, characterized in that, The smart appliance includes a controller and a semiconductor lamp; the controller uses the semiconductor lamp control method as described in any one of claims 1 to 7 to control the illumination of the semiconductor lamp; the smart appliance is one of a smart range hood and a smart refrigerator.

9. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the semiconductor lighting control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the semiconductor lighting control method according to any one of claims 1 to 7.

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