CN210609805U - Ambient light sensing control lamp switch circuit - Google Patents
Ambient light sensing control lamp switch circuit Download PDFInfo
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- CN210609805U CN210609805U CN201920734165.XU CN201920734165U CN210609805U CN 210609805 U CN210609805 U CN 210609805U CN 201920734165 U CN201920734165 U CN 201920734165U CN 210609805 U CN210609805 U CN 210609805U
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Abstract
The utility model aims at providing an ambient light sensing control lamps and lanterns switch circuit, the quick break-make of MOS pipe Q1 on this application through the PA36 foot output PWM waveform drive lamps and lanterns output circuit of singlechip U2 internal program control singlechip U2 realizes the discontinuous output of lamps and lanterns light to make the differentiation with external stable ambient light. The single chip microcomputer U2 detects the change of the external light through the external photosensitive diode D5, if the light is intermittent, the light is the light emitted by the lamp, the single chip microcomputer U2 does not act, if the light is continuous, the light is the change of the external environment light, and the single chip microcomputer U2 executes corresponding action according to a set program.
Description
Technical Field
The utility model relates to an environment photoinduction control lamps and lanterns switch circuit.
Background
Along with the popularization of intellectualization, unmanned lighting equipment is increasingly applied to daily life and work. The lamp is automatically switched on and off according to the change of the environment, so that the aims of energy conservation and environmental protection are fulfilled. However, due to the structural limitation of the lamp, the photosensitive sensing probe and the LED have to be disposed in the same cavity, which brings a problem that the photosensitive sensing probe cannot effectively distinguish the ambient light from the light emitted by the LED.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an environmental light sensing control lamps and lanterns switch circuit.
According to the utility model discloses an aspect provides an environmental light sensing control lamps and lanterns switch circuit, and this circuit includes:
the system comprises a safety resistor F1 and a rectifier bridge D1, wherein the L line of the commercial power is connected with one end of the safety resistor F1, the other end of the safety resistor F1 is connected with one input end of the rectifier bridge D1, and the N line of the commercial power is connected with the other input end of the rectifier bridge D1;
the power supply circuit comprises a resistor R2, a resistor R3, a power supply chip U1 and a capacitor C4, wherein the forward output end of the rectifier bridge D1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R3, the other end of the resistor R3 is connected to a 4-pin VCC of the power supply chip U1 and one end of the capacitor C4, and the other end of the capacitor C4 is connected to the negative electrode end of the rectifier bridge D1 and an 8-pin GND of the power supply chip U1;
the LED driving circuit comprises a diode D2, an electrolytic capacitor C1, a resistor R1, an inductor T1, a MOS transistor Q1, a capacitor C2 and a resistor R8, wherein a positive output end of a rectifier bridge D1 is respectively connected with a negative electrode of the diode D2, a positive electrode of the electrolytic capacitor C1 and one end of the resistor R1 to serve as a positive output end of a power supply, and a positive output of the connected power supply is connected with a positive electrode of a load LED; the anode of the diode D2 is connected with one end of the inductor T1 and the pins 5 and 6 of the power chip U1; the other end of the inductor T1 is respectively connected with the cathode of the electrolytic capacitor C1, the other end of the resistor R1 and the source electrode of the MOS transistor Q1; the drain electrode of the MOS tube Q1 is used as the negative electrode output end of a power supply and is connected with the negative electrode of the load LED; one end of the capacitor C2 is connected with the source electrode of the MOS tube Q1, and the other end of the capacitor C2 is connected with the ground GND; the pin 3 of the power chip U1 is connected with one end of the resistor R8, and the other end of the resistor R8 is connected with the ground GND;
the current regulator comprises a resistor R4, a triode Q3, a resistor R7, a single chip microcomputer U2, a voltage regulator tube D4, a diode D3 and a three-terminal regulator chip Q2, wherein one end of the resistor R4 is connected to the anode output end of the rectifier bridge D1, the other end of the resistor R4 is connected to the collector of the triode Q3 and one end of a resistor R7, and the other end of the resistor R7 is connected to an 8-pin GND of the single chip microcomputer U2; the base electrode of the triode Q3 is connected to the negative electrode of a voltage regulator tube D4, and the positive electrode of the voltage regulator tube D4 is connected to an 8-pin GND of the single chip microcomputer U2; an emitter of the triode Q3 is connected to the anode of a diode D3, the anode of the diode D3 is connected to one end of a capacitor C3 and the pin 3 at the input end of a three-terminal regulator chip Q2, and the other end of the capacitor C3 is connected to the pin GND 8 of the single chip microcomputer U2; a pin 1 GND of the three-terminal regulator chip Q2 is connected to a pin 8 GND of the single chip microcomputer U2; a pin 2 at the output end of the three-terminal regulator chip Q2 is connected to one end of a capacitor C5 and a pin 1 VDD of the singlechip U2, and a pin 8 GND of the singlechip U2 is connected to the negative electrode of the electrolytic capacitor C1;
the device comprises a resistor R5, a resistor R6 and a photodiode D5, wherein a pin 1 of the singlechip U2 is connected with VDD to one end of the resistor R5, the other end of the resistor R5 is connected with a pin 7 PA4 of the singlechip U2 and the anode of the photodiode D5, and the cathode of the photodiode D5 is connected with a pin 8 GND of the singlechip U2; the 6-pin PA3 of the singlechip U2 is connected to one end of the resistor R6, and the other end of the resistor R6 is connected to the grid of the MOS transistor Q1.
Further, in the circuit, the direct current output from the rectifier bridge D1 is subjected to current limiting and voltage reduction through the resistor R2 and the resistor R3 to generate a low-voltage direct current, and is filtered by the capacitor C4 to generate a pure low-voltage direct current to supply power to the power supply chip U1.
Furthermore, in the above circuit, the pins 5 and 6 of the power chip U1 are the same, the pin 5 and the pin 6 of the power chip U1 are commonly used as one end of a first switch, the pin 3 of the power chip is used as the other end of the first switch, the two ends of the first switch are quickly switched inside the power chip U1, so that the rectified direct current is interrupted and passes through a load LED and an inductor T1, and the power chip U1 adjusts the output PWM waveform by detecting the voltage of a resistor R8.
Furthermore, in the circuit, the electrolytic capacitor C1 filters the interrupted direct current into pure direct current for the work of the load LED, the resistor R1 is a dummy load, and when the load LED is open, the voltage on the electrolytic capacitor C1 is discharged to avoid danger; the capacitor C2 is used for isolating a spike voltage between two ends of the first switch when the first switch is rapidly switched inside the power chip U1 so as to protect the device from being damaged.
Further, in the circuit, the resistors R4 and R7 step down the high voltage dc voltage after the rectifier bridge D1 and supply the stepped-down voltage to the transistor Q3, the transistor Q3 generates a stable dc voltage through the voltage stabilizing effect of the voltage regulator tube D4, and a stable dc voltage output is generated at the output end 2 of the three-terminal regulator chip Q2 through the voltage input at the input end of the 3-pin input end of the three-terminal regulator chip Q2, and the stable dc voltage output is filtered by the capacitor C5 and then supplied to the single chip microcomputer U2 for use.
Furthermore, in the above circuit, when the photodiode D5 senses the light intensity of the external environment, the photodiode D5 is turned on, the voltage of the pin 7 PA4 of the single chip microcomputer U2 is pulled low, the voltage of the pin 6 PA3 of the single chip microcomputer U2 becomes low, so that the MOS transistor Q1 is turned off, and the load LED is turned off;
when the photodiode D5 senses that the external ambient light is weak, the 6-pin PA3 of the singlechip U2 controls the output PWM waveform to enable the MOS transistor Q1 to be conducted intermittently, and then the load LED is lighted intermittently.
Further, in the circuit, the cycle of the output PWM waveform of the 6-pin PA3 of the single chip microcomputer U2 is 10 mS.
Compared with the prior art, the LED lamp has the advantages that the PA36 pin of the single chip microcomputer U2 is controlled through the internal program of the single chip microcomputer U2 to output PWM waveforms to drive the MOS tube Q1 on the lamp output loop to be rapidly switched on and off, so that the intermittent output of lamp light is realized, and the LED lamp is distinguished from external stable ambient light.
In addition, the singlechip U2 detects the change of external light through the external photodiode D5, if the light is intermittent, the light is emitted by the lamp, the singlechip U2 does not act, if the light is continuous, the light is changed, and the singlechip U2 executes corresponding action according to a set program.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 shows a circuit diagram of an ambient light sensing control lamp according to an embodiment of the present invention.
The same or similar reference numbers in the drawings identify the same or similar elements.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides an ambient light sensing control lamps and lanterns switch circuit, include:
the system comprises a safety resistor F1 and a rectifier bridge D1, wherein the L line of the commercial power is connected with one end of the safety resistor F1, the other end of the safety resistor F1 is connected with one input end of the rectifier bridge D1, and the N line of the commercial power is connected with the other input end of the rectifier bridge D1;
in this case, the fuse resistor F1 protects against the risk of short circuits and converts the alternating current into direct current via the rectifier bridge D1.
The power supply circuit comprises a resistor R2, a resistor R3, a power supply chip U1 and a capacitor C4, wherein the forward output end of the rectifier bridge D1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R3, the other end of the resistor R3 is connected to a 4-pin VCC of the power supply chip U1 and one end of the capacitor C4, and the other end of the capacitor C4 is connected to the negative electrode end of the rectifier bridge D1 and an 8-pin GND of the power supply chip U1;
preferably, the direct current output from the rectifier bridge D1 is subjected to current limiting and voltage reduction through the resistor R2 and the resistor R3 to generate a low-voltage direct current, and then is filtered through the capacitor C4 to generate a relatively pure low-voltage direct current to supply power to the power chip U1, so as to maintain the normal operation of the power chip U1;
the power chip U1 can adopt a chip with the model number SD6702S manufactured by the Millland micro corporation;
the LED driving circuit comprises a diode D2, an electrolytic capacitor C1, a resistor R1, an inductor T1, a MOS transistor Q1, a capacitor C2 and a resistor R8, wherein a positive output end of a rectifier bridge D1 is respectively connected with a negative electrode of the diode D2, a positive electrode of the electrolytic capacitor C1 and one end of the resistor R1 to serve as a positive output end of a power supply, and a positive output end of the connected power supply is connected with a positive electrode of a load LED; the anode of the diode D2 is connected with one end of the inductor T1 and the pins 5 and 6 of the power chip U1; the other end of the inductor T1 is respectively connected with the cathode of the electrolytic capacitor C1, the other end of the resistor R1 and the source electrode of the MOS transistor Q1; the drain electrode of the MOS tube Q1 is used as the negative electrode output end of a power supply and is connected with the negative electrode of the load LED; one end of the capacitor C2 is connected with the source electrode of the MOS tube Q1, and the other end of the capacitor C2 is connected with the ground GND; the pin 3 of the power chip U1 is connected with one end of the resistor R8, and the other end of the resistor R8 is connected with the ground GND;
preferably, the pins 5 and 6 of the power chip U1 are the same, the pin 5 and the pin 6 of the power chip U1 are commonly used as one end of a first switch, the pin 3 of the power chip is used as the other end of the first switch, the two ends of the first switch are quickly switched in the power chip U1, so that the rectified direct current is interrupted and passes through a load LED and an inductor T1, and the power chip U1 judges whether the PWM waveform of the switch needs to be adjusted by detecting the voltage of a resistor R8, so as to achieve the purpose of constant current output; the diode D2 plays a role of follow current, the electrolytic capacitor C1 filters discontinuous direct current into relatively pure direct current for the work of the load LED, the resistor R1 is a dummy load, and when the load LED is in an open circuit, the voltage on the electrolytic capacitor C1 can be rapidly discharged, so that danger is avoided; the capacitor C2 can effectively isolate the spike voltage between the two ends of the first switch when the power supply chip U1 is rapidly switched so as to protect the device from being damaged;
the current regulator comprises a resistor R4, a triode Q3, a resistor R7, a single chip microcomputer U2, a voltage regulator tube D4, a diode D3 and a three-terminal regulator chip Q2, wherein one end of the resistor R4 is connected to the anode output end of the rectifier bridge D1, the other end of the resistor R4 is connected to the collector of the triode Q3 and one end of a resistor R7, and the other end of the resistor R7 is connected to an 8-pin GND of the single chip microcomputer U2; the base electrode of the triode Q3 is connected to the negative electrode of a voltage regulator tube D4, and the positive electrode of the voltage regulator tube D4 is connected to an 8-pin GND of the single chip microcomputer U2; an emitter of the triode Q3 is connected to the anode of a diode D3, the anode of the diode D3 is connected to one end of a capacitor C3 and the pin 3 at the input end of a three-terminal regulator chip Q2, and the other end of the capacitor C3 is connected to the pin GND 8 of the single chip microcomputer U2; a pin 1 GND of the three-terminal regulator chip Q2 is connected to a pin 8 GND of the single chip microcomputer U2; a pin 2 at the output end of the three-terminal regulator chip Q2 is connected to one end of a capacitor C5 and a pin 1 VDD of the singlechip U2, and a pin 8 GND of the singlechip U2 is connected to the negative electrode of the electrolytic capacitor C1;
preferably, the resistors R4 and R7 step down the high voltage dc voltage behind the rectifier bridge D1 and supply the dc voltage to the transistor Q3, the transistor Q3 generates a stable dc voltage through the voltage stabilizing effect of the voltage regulator tube D4, the diode D3 prevents the backflow of current, the capacitor C3 plays a role in filtering and voltage stabilizing, the chip Q2 is a three-terminal regulator, a very stable dc voltage output is generated at the output terminal 2 of the three-terminal regulator chip Q2 through the voltage input at the input terminal 3 of the three-terminal regulator chip Q2, and the dc voltage output is filtered by the capacitor C5 and supplied to the single chip microcomputer U2.
The single chip microcomputer U2 can be a single chip microcomputer with model number XY152 of Shenzhen Lisheng Mei company.
The device comprises a resistor R5, a resistor R6 and a photosensitive diode D5, wherein a pin 1 VDD of the single chip microcomputer U2 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to a pin 7 PA4 of the single chip microcomputer U2 and the anode of the photosensitive diode D5, and the cathode of the photosensitive diode D5 is connected to a pin 8 GND of the single chip microcomputer U2; a 6-pin PA3 of the singlechip U2 is connected to one end of the resistor R6, and the other end of the resistor R6 is connected to the grid of the MOS transistor Q1;
preferably, when the photodiode D5 senses the light intensity of the external environment, the photodiode D5 is turned on, the voltage of the pin 7 PA4 of the single chip microcomputer U2 is pulled low, the voltage of the pin 6 PA3 of the single chip microcomputer U2 is controlled to be lowered through an internal program of the single chip microcomputer U2, the MOS transistor Q1 is turned off, and the load LED is turned off;
when the photodiode D5 senses that the external ambient light is weak, the PA36 pin of the singlechip U2 is controlled by an internal program of the singlechip U2 to output PWM waveform, so that the MOS transistor Q1 is switched on intermittently, the load LED is lighted intermittently, and the switching frequency is controlled well due to the visual retention effect of human eyes, so that the human eyes cannot sense that the load LED is lighted intermittently. Therefore, the ambient light and the light emitted by the LED are distinguished, and the singlechip can distinguish the ambient light from the light emitted by the LED. Interference and misjudgment are avoided.
Here, the application utilizes the internal program of the singlechip U2 to control the PA36 pin of the singlechip U2 to output PWM waveform to drive the MOS tube Q1 on the lamp output loop to be switched on and off rapidly, so that the intermittent output of the lamp light is realized, and the lamp light is distinguished from the external stable ambient light.
In addition, the singlechip U2 detects the change of external light through the external photodiode D5, if the light is intermittent, the light is emitted by the lamp, the singlechip U2 does not act, if the light is continuous, the light is changed, and the singlechip U2 executes corresponding action according to a set program.
In order to make human eyes not perceive that the light of the lamp is output intermittently, the period of the PWM waveform can be controlled within 100mS, because the human eyes have visual dwell time of about 0.1S, in order to ensure that human eyes cannot perceive the intermittent of the light, the period of the PWM waveform is generally set to be about 10 mS. The time cannot be too short, and the detection accuracy of the singlechip with too short time is reduced.
In a specific embodiment, the application provides a doorplate lamp provided with the ambient light sensing control lamp switch circuit, which can sense the brightness of ambient light and automatically turn off or on. When the environment is bright, the lamp is automatically turned off and is in a standby state, and when the environment is dark, the lamp is automatically turned on and starts to work. Because the photosensitive probe is arranged in the lamp, the lamp is better and more attractive in integral body feeling, and higher IP grade can be conveniently realized.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
Claims (7)
1. An ambient light sensing control lamp switching circuit, wherein the circuit comprises:
the system comprises a safety resistor F1 and a rectifier bridge D1, wherein the L line of the commercial power is connected with one end of the safety resistor F1, the other end of the safety resistor F1 is connected with one input end of the rectifier bridge D1, and the N line of the commercial power is connected with the other input end of the rectifier bridge D1;
the power supply circuit comprises a resistor R2, a resistor R3, a power supply chip U1 and a capacitor C4, wherein the forward output end of the rectifier bridge D1 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with one end of the resistor R3, the other end of the resistor R3 is connected to a 4-pin VCC of the power supply chip U1 and one end of the capacitor C4, and the other end of the capacitor C4 is connected to the negative electrode end of the rectifier bridge D1 and an 8-pin GND of the power supply chip U1;
the LED driving circuit comprises a diode D2, an electrolytic capacitor C1, a resistor R1, an inductor T1, a MOS transistor Q1, a capacitor C2 and a resistor R8, wherein a positive output end of a rectifier bridge D1 is respectively connected with a negative electrode of the diode D2, a positive electrode of the electrolytic capacitor C1 and one end of the resistor R1 to serve as a positive output end of a power supply, and a positive output of the connected power supply is connected with a positive electrode of a load LED; the anode of the diode D2 is connected with one end of the inductor T1 and the pins 5 and 6 of the power chip U1; the other end of the inductor T1 is respectively connected with the cathode of the electrolytic capacitor C1, the other end of the resistor R1 and the source electrode of the MOS transistor Q1; the drain electrode of the MOS tube Q1 is used as the negative electrode output end of a power supply and is connected with the negative electrode of the load LED; one end of the capacitor C2 is connected with the source electrode of the MOS tube Q1, and the other end of the capacitor C2 is connected with the ground GND; the pin 3 of the power chip U1 is connected with one end of the resistor R8, and the other end of the resistor R8 is connected with the ground GND;
the current regulator comprises a resistor R4, a triode Q3, a resistor R7, a single chip microcomputer U2, a voltage regulator tube D4, a diode D3 and a three-terminal regulator chip Q2, wherein one end of the resistor R4 is connected to the anode output end of the rectifier bridge D1, the other end of the resistor R4 is connected to the collector of the triode Q3 and one end of a resistor R7, and the other end of the resistor R7 is connected to an 8-pin GND of the single chip microcomputer U2; the base electrode of the triode Q3 is connected to the negative electrode of a voltage regulator tube D4, and the positive electrode of the voltage regulator tube D4 is connected to an 8-pin GND of the single chip microcomputer U2; an emitter of the triode Q3 is connected to the anode of a diode D3, the anode of the diode D3 is connected to one end of a capacitor C3 and the pin 3 at the input end of a three-terminal regulator chip Q2, and the other end of the capacitor C3 is connected to the pin GND 8 of the single chip microcomputer U2; a pin 1 GND of the three-terminal regulator chip Q2 is connected to a pin 8 GND of the single chip microcomputer U2; a pin 2 at the output end of the three-terminal regulator chip Q2 is connected to one end of a capacitor C5 and a pin 1 VDD of the singlechip U2, and a pin 8 GND of the singlechip U2 is connected to the negative electrode of the electrolytic capacitor C1;
the device comprises a resistor R5, a resistor R6 and a photodiode D5, wherein a pin 1 of the singlechip U2 is connected with VDD to one end of the resistor R5, the other end of the resistor R5 is connected with a pin 7 PA4 of the singlechip U2 and the anode of the photodiode D5, and the cathode of the photodiode D5 is connected with a pin 8 GND of the singlechip U2; the 6-pin PA3 of the singlechip U2 is connected to one end of the resistor R6, and the other end of the resistor R6 is connected to the grid of the MOS transistor Q1.
2. The circuit of claim 1, wherein the direct current output from the rectifier bridge D1 is current-limited and voltage-reduced by the resistor R2 and the resistor R3 to generate a low-voltage direct current, and is filtered by a capacitor C4 to generate a pure low-voltage direct current to power the power chip U1.
3. The circuit of claim 1, wherein the pins 5 and 6 of the power chip U1 are the same, the pin 5 and 6 of the power chip U1 collectively serve as one end of a first switch, the pin 3 of the power chip serves as the other end of the first switch, the two ends of the first switch are rapidly switched inside the power chip U1, rectified direct current is interrupted to pass through a load LED and an inductor T1, and the power chip U1 adjusts the output PWM waveform by detecting the voltage of a resistor R8.
4. The circuit of claim 3, wherein the electrolytic capacitor C1 filters the intermittent DC to pure DC for the load LED operation, the resistor R1 is a dummy load, and when the load LED is open, the voltage on the electrolytic capacitor C1 is discharged to avoid danger; the capacitor C2 is used for isolating a spike voltage between two ends of the first switch when the first switch is rapidly switched inside the power chip U1 so as to protect the device from being damaged.
5. The circuit of claim 1, wherein the resistors R4 and R7 step down the high voltage dc voltage after the rectifier bridge D1 and supply the dc voltage to the transistor Q3, the transistor Q3 generates a stable dc voltage through the voltage stabilizing effect of the voltage regulator D4, the voltage input at the 3-pin input end of the three-terminal regulator chip Q2 generates a stable dc voltage output at the 2-pin output end of the three-terminal regulator chip Q2, and the stable dc voltage output is filtered by the capacitor C5 and supplied to the single chip microcomputer U2.
6. The circuit of claim 1, wherein when the photodiode D5 senses the light intensity of the external environment, the photodiode D5 is turned on, the voltage of the pin 7 PA4 of the single chip microcomputer U2 is pulled low, the voltage of the pin 6 PA3 of the single chip microcomputer U2 becomes low, the MOS transistor Q1 is turned off, and the load LED is turned off;
when the photodiode D5 senses that the external ambient light is weak, the 6-pin PA3 of the singlechip U2 controls the output PWM waveform to enable the MOS transistor Q1 to be conducted intermittently, and then the load LED is lighted intermittently.
7. The circuit of claim 6, wherein the single-chip U2 has a 6-pin PA3 output PWM waveform with a period of 10 mS.
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| CN201920734165.XU CN210609805U (en) | 2019-05-21 | 2019-05-21 | Ambient light sensing control lamp switch circuit |
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| CN201920734165.XU CN210609805U (en) | 2019-05-21 | 2019-05-21 | Ambient light sensing control lamp switch circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113842A (en) * | 2019-05-21 | 2019-08-09 | 江苏宜美照明科技股份有限公司 | Environment photoinduction controls lamp switch circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113842A (en) * | 2019-05-21 | 2019-08-09 | 江苏宜美照明科技股份有限公司 | Environment photoinduction controls lamp switch circuit |
| CN110113842B (en) * | 2019-05-21 | 2024-03-05 | 江苏宜美照明科技股份有限公司 | Ambient light induction control lamp switch circuit |
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