CN211321588U - Lighting device control circuit and lighting device - Google Patents
Lighting device control circuit and lighting device Download PDFInfo
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- CN211321588U CN211321588U CN201921843704.XU CN201921843704U CN211321588U CN 211321588 U CN211321588 U CN 211321588U CN 201921843704 U CN201921843704 U CN 201921843704U CN 211321588 U CN211321588 U CN 211321588U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model provides a control circuit of a lighting device and the lighting device, which are applied to the technical field of intelligent traffic, the circuit is provided with a first light collecting device and a sound collecting device, the first light collecting device is used for collecting the light brightness, the sound collecting device is used for collecting the environmental sound, controlling the second switch to be closed under the condition that the light brightness meets a first preset condition and the environmental sound meets a second preset condition, so that the driving circuit of the lighting device is electrified and drives the light source in the lighting device to work, environmental light brightness and environmental sound can be considered comprehensively, compared with a control mode of controlling the operation of the lighting device according to fixed time in the prior art, the lighting device can adapt to environmental changes more flexibly, the lighting device can be controlled according to environmental changes, and then the lighting effect is improved.
Description
Technical Field
The utility model relates to an intelligent transportation technical field, in particular to lighting device control circuit and lighting device.
Background
In actual life, lighting devices are installed on two sides of most roads and used for providing lighting for a driver at night or under the condition that light of other environments is insufficient, visibility of a driving environment is improved, and driving safety is improved.
In order to save the power consumed by the lighting device, the on-time and the off-time of the lighting device are generally set, and when the on-time is reached, the lighting device is controlled to work, and when the off-time is reached, the lighting device is controlled to be turned off.
However, controlling the lighting device according to the fixed on-time and off-time is difficult to meet the requirement of environmental change in practical application. For example, in rainy weather, the environmental visibility is low, or in autumn and winter, the sunshine duration in the daytime is short, and if the lighting device is still controlled according to the set starting time and the set closing time, it is obviously difficult to provide effective lighting, and even reduce the driving safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides a lighting device control circuit and lighting device controls lighting device according to the environmental change, improves illuminating effect.
In order to achieve the purpose, the technical scheme provided by the application is as follows:
in a first aspect, the present invention provides a lighting device control circuit, including: a first light collection device, a sound collection device, a first switch, a second switch, and a controller,
the power supply input end of the first light ray acquisition device is connected with a first power supply, and the signal output end of the first light ray acquisition device is connected with the first signal acquisition end of the controller;
the input end of the first switch is connected with a second power supply, the output end of the first switch is connected with the power supply input end of the sound acquisition device, and the control end of the first switch is connected with the first control signal output end of the controller;
the signal output end of the sound acquisition device is connected with the second signal acquisition end of the controller;
the input end of the second switch is connected with a third power supply, the output end of the second switch is connected with the driving end of a driving circuit of the lighting device, and the control end of the second switch is connected with a second control signal output end of the controller;
the controller is used for controlling the second switch to be closed under the condition that the light brightness fed back by the first light collecting device meets a first preset condition and the environment sound fed back by the sound collecting device meets a second preset condition, so that the driving circuit is powered on and the light source is driven to work.
Optionally, the utility model discloses the lighting device control circuit that the first aspect provided still includes: a third switch and a second light collection device, wherein,
the input end of the third switch is connected with a fourth power supply, the output end of the third switch is connected with the power supply input end of the second light collecting device, and the control end of the third switch is connected with the third control signal output end of the controller;
and the signal output end of the second light ray acquisition device is connected with the third signal acquisition end of the controller.
Optionally, the first switch, the second switch and the third switch are switches with the same circuit structure, and the switches include: a first switch tube, a second switch tube and a first resistor, wherein,
one end of the first resistor is connected with a corresponding power supply, and the other end of the first resistor is grounded through the first switch tube;
the control end of the first switch tube is used as the control end of the corresponding switch;
the input end of the second switch tube is used as the input end of the corresponding switch, the output end of the second switch tube is used as the output end of the corresponding switch, and the control end of the second switch tube is connected with the series connection point of the first resistor and the first switch tube.
Optionally, the switch further includes: an input filter circuit comprising a second resistor and a first capacitor, wherein,
one end of the second resistor is used as a control end of the corresponding switch, and the other end of the second resistor is grounded through the first capacitor;
and the control end of the first switching tube is connected with the series connection point of the second resistor and the first capacitor.
Optionally, the switch further includes: and a filter capacitor is output, wherein,
one end of the output filter capacitor is connected with the output end of the corresponding switch, and the other end of the output filter capacitor is grounded.
Optionally, the switch further includes: a slow start circuit including a third resistor and a second capacitor, wherein,
one end of the second capacitor is connected with the input end of the corresponding switch, and the other end of the second capacitor is connected with the series connection point of the first switch tube and the first resistor through the third resistor;
and the control end of the second switching tube is connected with the series connection point of the third resistor and the second capacitor.
Optionally, the first light collection device is used for collecting ambient light brightness, and the second light collection device is used for collecting vehicle light brightness.
Optionally, the first light collecting device and the second light collecting device are both light sensors.
Optionally, the sound collection device comprises at least one microphone.
In a second aspect, the present invention also provides a lighting device, including: a light source, a drive circuit, and a lighting device control circuit according to any one of the first aspect of the present invention,
the light source is electrically connected with the driving circuit and is used for lighting under the driving of the driving circuit;
and the driving end of the driving circuit is connected with the control end of a second switch in the lighting device control circuit.
The utility model provides a lighting device control circuit, be provided with first light collection system and sound collection system, gather light luminance through first light collection system, and gather environment sound through sound collection system, satisfy first predetermined condition and environment sound at light luminance and satisfy under the condition that the second predetermined condition was satisfied, control second switch is closed, make the light source work among the power and the drive lighting device on lighting device's the drive circuit, through the utility model provides a lighting device control circuit can synthesize and consider environment light luminance and environment sound, compares with the control mode according to the work of fixed time control lighting device among the prior art, adaptation environmental change that can be more nimble, realizes controlling lighting device according to environmental change, and then improves illuminating effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit topology diagram of a lighting device control circuit according to an embodiment of the present invention;
fig. 2 is a circuit topology diagram of another lighting device control circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Optionally, referring to fig. 1, fig. 1 is a circuit topology diagram of a lighting device control circuit provided by an embodiment of the present invention, and the control circuit of the lighting device provided by the embodiment of the present invention may include: a first light collection device, a sound collection device, a first switch, a second switch, and a controller,
the power input end of the first light collecting device is connected with a first power supply Vcc1, and the signal output end of the first light collecting device is connected with a first signal collecting end I1 of the controller. When the controller is in use, the first light collection device is used for collecting light brightness, feeding back corresponding light brightness collection data to the controller, and providing basic data for the control process of the controller.
The input end of the first switch is connected with the second power supply Vcc2, the output end of the first switch is connected with the power supply input end of the sound collection device, and the control end of the first switch is connected with the first control signal output end O1 of the controller. The signal output end of the sound collection device is connected with a second signal collection end I2 of the controller. In use, the controller can output a control signal to the control end of the first switch according to a preset control signal output condition, so as to control the working state of the first switch and further control the working state of the sound collection device. Specifically, when the controller outputs a control signal to control the first switch to be switched on and off, the second power supply Vcc2 is communicated with the power supply input end of the sound collection device, the sound collection device starts to work after being powered on, starts to collect environmental sound, and feeds back the collected environmental sound to the controller through the second signal collection end I2 of the controller; correspondingly, when the controller outputs a control signal to control the first switch to be switched off, the second power supply Vcc2 is disconnected from the power supply input end of the sound collection device, and the sound collection device is powered off and stops working.
Optionally, the source of the environmental sound collected by the sound collection device may be different according to the environment in which the lighting device is used. For example, when the lighting device is used as a street lamp, the environmental sound collected by the sound collection device at least includes tire noise and whistling sound generated when a vehicle passes through the street lamp, and sound generated when other traffic participants such as pedestrians walk, bicycles, electric vehicles and the like pass through the street lamp. It can be imagined that when the sound collection device is used for collecting the sound of walking, bicycle, electric motor car, for improving the effect of sound collection, can directly set up the sound collection device in positions such as ground, light pole, roadside railing.
The specific type of the sound collection device may be implemented by using one or more microphones, and of course, other devices capable of implementing the sound collection function in the prior art are optional, and are not described herein again.
The input terminal of the second switch is connected to the third power supply Vcc3, the output terminal of the second switch is connected to the driving terminal of the driving circuit of the lighting device, and the control terminal of the second switch is connected to the second control signal output terminal O2 of the controller. The controller can control the operating state of the second switch through the second control signal output terminal O2, thereby controlling the on or off of the light source, i.e. controlling the operating state of the lighting device. Specifically, the controller is under the condition that the light luminance that first light collection system fed back satisfies first preset condition, for example, light luminance is less than first light luminance threshold value, control first switch is closed, the work of sound collection system power consumption, to controller feedback environment sound, the condition of the environment sound that feeds back at the sound collection system satisfies the second preset condition, for example, environment sound is greater than preset sound threshold value, controller control second switch is closed, third power Vcc3 is linked together with lighting device's drive circuit, the power supply is gone up to the drive circuit and the light source work among the drive lighting device.
Correspondingly, under the condition that the light brightness fed back by the first light collecting device does not meet the first preset condition, the controller controls the first switch to be disconnected, the sound collecting device cannot be communicated with the second power supply Vcc2, the environmental sound cannot be collected, the controller controls the second switch to be disconnected, the driving circuit of the lighting device is powered off, and the light source of the lighting device works.
Or, under the condition that the light brightness fed back by the first light collecting device meets the first preset condition, the controller controls the first switch to be closed, the sound collecting device is powered on to work, and the environmental sound is fed back to the controller, if the environmental sound does not meet the second preset condition, the controller can also control the second switch to be disconnected, the driving circuit of the lighting device cannot be connected with the third power supply Vcc3, and the light source of the lighting device cannot work.
Optionally, the control signals output by the controller to the first switch and the second switch may be selected according to a specific switch circuit configuration.
It is conceivable that, in practical applications, the first light collecting device, the first switch, the second switch, and the power source connected to the lighting device driving circuit may be connected to the same power source, or may be connected to different power sources, as long as the above-mentioned working process can be implemented.
To sum up, the embodiment of the utility model provides a lighting device control circuit is provided with first light collection system and sound collection system, gathers light luminance through first light collection system, and gather environmental sound through sound collection system, satisfies under the first predetermined condition of light luminance and environmental sound satisfies the condition that the second predetermined condition was satisfied, control second switch is closed, makes power-on and drive the light source work among the lighting device on lighting device's the drive circuit, through the embodiment of the utility model provides a lighting device control circuit can consider environmental light luminance and environmental sound comprehensively, compares with the control mode of controlling lighting device work according to the fixed time among the prior art, and adaptation environment that can be more nimble changes, realizes controlling lighting device according to environmental change, and then improves illuminating effect.
Optionally, in the embodiment shown in fig. 1, an optional circuit structure of the first switch and the second switch is further shown, and as can be seen from the illustration, the first switch and the second switch are switches with the same circuit structure, and the switch includes: a first switch tube Q1, a second switch tube Q2 and a first resistor R1, wherein,
one end of the first resistor R1 is connected to the second power supply Vcc2, the other end of the first resistor R1 is grounded via the first switch tube Q1, the control end of the first switch tube Q1 is used as the control end of the corresponding switch (here, the first switch or the second switch), the input end of the second switch tube Q2 is used as the input end of the corresponding switch and connected to the second power supply Vcc2, the output end of the second switch tube Q2 is used as the output end of the corresponding switch, and the control end of the second switch tube Q2 is connected to the series connection point of the first resistor R1 and the first switch tube Q1.
Specifically, for the first switch, the control end of the first switch tube Q1 is connected to the first control signal output end O1 of the controller, and the output end of the second switch tube Q2 is connected to the power input end of the sound collection device; for the second switch, the control terminal of the first switch Q1 is connected to the second control signal output terminal O2 of the controller, and the output terminal of the second switch Q2 is connected to the driving terminal of the driving circuit of the lighting device.
For the circuit structure of the first switch and the second switch shown in fig. 1, when the control signal output by the controller is at a high level, the first switch Q1 is turned on, and then the second switch Q2 is controlled to be turned on, so that the power supply is communicated with the power supply input end of the driving circuit or the sound collection device; when the control signal output by the controller is at a low level, the first switch tube Q1 and the second switch tube Q2 are both in an off state.
Optionally, the first switch and the second switch shown in the embodiment shown in fig. 1 each further include: the input filter circuit comprises a second resistor R2 and a first capacitor C1.
In the case where the first switch and the second switch include input filter circuits, one end of the second resistor R2 is connected to a control signal output terminal of the controller as a control terminal of the corresponding switch, the other end of the second resistor R2 is grounded via the first capacitor C1, and the control terminal of the first switch Q1 is connected to a series connection point of the second resistor R2 and the first capacitor C1. By arranging the input filter circuit, the control signal output by the controller can be filtered, high-frequency noise possibly contained in the control signal is filtered, and the first switch and the second switch are prevented from misoperation.
Optionally, the first switch and the second switch shown in the embodiment shown in fig. 1 each further include: and a filter capacitor C2 is output. One end of the output filter capacitor C2 is connected to the output end of the corresponding switch, specifically, to the output end of the second switch Q2, and the other end of the output filter capacitor C2 is grounded. The output filter capacitor C2 can filter the control signals output by the first switch and the second switch, and avoid the false operation of the rear-stage circuit.
Optionally, the first switch and the second switch shown in the embodiment shown in fig. 1 each further include: the circuit is started slowly. Wherein, the slow start circuit comprises a third resistor R3 and a second capacitor C3, wherein,
in the case where the first and second switches comprise soft start circuits, one terminal of the second capacitor C3 is connected to the input terminal of the corresponding switch, the other terminal of the second capacitor C3 is connected to the series connection point of the first switch transistor Q1 and the first resistor R1 via the third resistor R3, and the control terminal of the second switch transistor Q2 is connected to the series connection point of the third resistor R3 and the second capacitor C3. That is, the third resistor R3 is connected in series between the control terminal of the second switch Q2 and the output terminal of the first switch Q1, one terminal of the second capacitor C3 is connected to the input terminal of the corresponding switch, and the other terminal of the second capacitor C3 is connected to the output terminal of the first switch Q1 (i.e., the series connection point of the output terminal of the first switch Q1 and the third resistor R3). By slowly starting the circuit, the second switching tube Q2 in the corresponding switch can be protected during the power-on process of the circuit.
In practical applications, particularly when the lighting device is used as a street lamp, there is an application scenario: at night or in rainy days, the light brightness collected by the first light sensor is smaller than a first light brightness threshold value, the controller controls the first switch to be closed, and the sound collection device enters a working state and starts to collect environmental sound. Under the condition that no vehicle passes through the street lamp, if the ambient noise is large, such as wind noise, the ambient sound acquired by the sound acquisition device is larger than a preset sound threshold value, the controller is caused to malfunction, the second switch is controlled to be closed, and then the lighting device is turned on.
In order to solve the above problem, an embodiment of the present invention further provides another lighting device control circuit, optionally, see fig. 2, and fig. 2 is a circuit topology diagram of another lighting device control circuit provided by an embodiment of the present invention, and the circuit topology structure further includes a third switch and a second light collecting device on the basis of the embodiment shown in fig. 1.
Specifically, the input end of the third switch is connected to the fourth power Vcc4, the output end of the third switch is connected to the power input end of the second light collecting device, the control end of the third switch is connected to the third control signal output end O3 of the controller, and the signal output end of the second light collecting device is connected to the third signal collecting end I3 of the controller.
Optionally, the embodiment of the utility model provides an in, first light collection system can be towards the sky for gather environment light luminance, second light collection system can be towards the direction that the vehicle drove in the road, be used for detecting vehicle light. The position of the sound collection device is as described above and will not be repeated here.
Optionally, the first light collecting device and the second light collecting device may both use light sensors. Of course, first light collection system and second light collection system can choose for use the light sensor of the same model, also can choose for use the light sensor of different models, the utility model discloses do not injecing to this.
It should be noted that the circuit structures of the third switch, the first switch and the second switch are completely the same, and the optional configuration of the third switch may be implemented by referring to the above-mentioned first switch and second switch building manner, which is not described herein again.
The following describes a control process of the lighting device control circuit provided by the embodiment of the present invention with reference to the topology diagram of the control circuit shown in fig. 2:
the first light collection device collects ambient light, when the controller judges that the first light brightness fed back by the first light collection device is smaller than a first light brightness threshold value, the controller firstly controls the third switch to be closed, the second light collection device starts to work, vehicle light is collected, if the second light brightness fed back by the second light collection device is larger than a second light brightness threshold value, the controller controls the first switch to be closed, the sound collection device is powered on to work, the ambient sound is collected, when the ambient sound collected by the sound collection device is larger than a preset sound threshold value, the controller controls the second switch to be closed, the lighting device is powered on to work, and lighting is provided for passing vehicles.
Accordingly, the controller does not control the operation of the lighting device as long as one of the three determination conditions is not satisfied.
Through the embodiment of the utility model provides a lighting device control circuit not only considers ambient light luminance and environmental sound, still combines the light luminance of vehicle simultaneously, only satisfies that ambient light is not enough, has the vehicle to drive under the condition of dual condition to further judge through environmental sound, just control lighting device work, can effectively improve lighting device control process's the degree of accuracy, reach the purpose of practicing thrift the electric energy.
In conjunction with the embodiment shown in fig. 1 and the embodiment shown in fig. 2, it should be particularly noted that the first preset condition according to the embodiment of the present invention is different according to different applicable control circuits. Specifically, for the embodiment shown in fig. 1, the first preset condition is that the first light brightness fed back by the first light collecting device is smaller than the first light brightness threshold; for the embodiment shown in fig. 2, the first preset condition is that the first light brightness fed back by the first light collecting device is smaller than the first light brightness threshold, and the second light brightness fed back by the second light collecting device is greater than the second light brightness threshold. In actual use, specific circuit result settings may be incorporated.
Optionally, the embodiment of the utility model provides a still provide a lighting device, include: the light source, the driving circuit, and the lighting device control circuit provided by any of the above embodiments, wherein,
the light source is electrically connected with the driving circuit and is used for lighting under the driving of the driving circuit;
and the driving end of the driving circuit is connected with the control end of a second switch in the lighting device control circuit.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, but also include other elements not expressly listed or inherent to such article or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A lighting device control circuit, comprising: a first light collection device, a sound collection device, a first switch, a second switch, and a controller,
the power supply input end of the first light ray acquisition device is connected with a first power supply, and the signal output end of the first light ray acquisition device is connected with the first signal acquisition end of the controller;
the input end of the first switch is connected with a second power supply, the output end of the first switch is connected with the power supply input end of the sound acquisition device, and the control end of the first switch is connected with the first control signal output end of the controller;
the signal output end of the sound acquisition device is connected with the second signal acquisition end of the controller;
the input end of the second switch is connected with a third power supply, the output end of the second switch is connected with the driving end of a driving circuit of the lighting device, and the control end of the second switch is connected with a second control signal output end of the controller;
the controller is used for controlling the second switch to be closed under the condition that the light brightness fed back by the first light collecting device meets a first preset condition and the environment sound fed back by the sound collecting device meets a second preset condition, so that the driving circuit is powered on and the light source is driven to work.
2. The lighting device control circuit of claim 1, further comprising: a third switch and a second light collection device, wherein,
the input end of the third switch is connected with a fourth power supply, the output end of the third switch is connected with the power supply input end of the second light collecting device, and the control end of the third switch is connected with the third control signal output end of the controller;
and the signal output end of the second light ray acquisition device is connected with the third signal acquisition end of the controller.
3. The lighting device control circuit according to claim 2, wherein the first switch, the second switch, and the third switch are switches having the same circuit configuration, and the switches include: a first switch tube, a second switch tube and a first resistor, wherein,
one end of the first resistor is connected with a corresponding power supply, and the other end of the first resistor is grounded through the first switch tube;
the control end of the first switch tube is used as the control end of the corresponding switch;
the input end of the second switch tube is used as the input end of the corresponding switch, the output end of the second switch tube is used as the output end of the corresponding switch, and the control end of the second switch tube is connected with the series connection point of the first resistor and the first switch tube.
4. The lighting device control circuit of claim 3, wherein the switch further comprises: an input filter circuit comprising a second resistor and a first capacitor, wherein,
one end of the second resistor is used as a control end of the corresponding switch, and the other end of the second resistor is grounded through the first capacitor;
and the control end of the first switching tube is connected with the series connection point of the second resistor and the first capacitor.
5. The lighting device control circuit of claim 3, wherein the switch further comprises: and a filter capacitor is output, wherein,
one end of the output filter capacitor is connected with the output end of the corresponding switch, and the other end of the output filter capacitor is grounded.
6. The lighting device control circuit of claim 3, wherein the switch further comprises: a slow start circuit including a third resistor and a second capacitor, wherein,
one end of the second capacitor is connected with the input end of the corresponding switch, and the other end of the second capacitor is connected with the series connection point of the first switch tube and the first resistor through the third resistor;
and the control end of the second switching tube is connected with the series connection point of the third resistor and the second capacitor.
7. A lighting device control circuit as recited in any one of claims 2-5, wherein said first light collection device is configured to collect ambient light brightness and said second light collection device is configured to collect vehicle light brightness.
8. A lighting device control circuit as recited in any one of claims 2-5, wherein said first light collection device and said second light collection device are both light sensors.
9. A lighting device control circuit as recited in any one of claims 1-5, wherein said sound collection device comprises at least one microphone.
10. An illumination device, comprising: a light source, a driving circuit, and the lighting device control circuit of any one of claims 1-9, wherein,
the light source is electrically connected with the driving circuit and is used for lighting under the driving of the driving circuit;
and the driving end of the driving circuit is connected with the control end of a second switch in the lighting device control circuit.
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| CN201921843704.XU CN211321588U (en) | 2019-10-29 | 2019-10-29 | Lighting device control circuit and lighting device |
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| CN112822824A (en) * | 2019-10-29 | 2021-05-18 | 北京声智科技有限公司 | Lighting device control circuit, control method and lighting device |
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| CN112822824A (en) * | 2019-10-29 | 2021-05-18 | 北京声智科技有限公司 | Lighting device control circuit, control method and lighting device |
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