Intelligent light-operated LED circuit

Abstract

The utility model discloses an intelligent light-operated LED circuit, which relates to the technical field of light-operated LEDs, and comprises a power supply module used for supplying power; the ambient light detection module is used for detecting the brightness of ambient light; the illumination control module is used for controlling the constant-current driving module to carry out constant-current adjustment when the ambient light brightness is lower than a set first voltage threshold value; the illumination degree detection module is used for judging a difference value between the ambient light brightness and a set second voltage threshold value, adjusting the electric energy output by the illumination adjusting module in a voltage division manner according to the difference value, and then adjusting the power output by the constant-current driving module; the constant-current driving module is used for providing constant-current electric energy for the LED module and adjusting the illumination brightness of the LED module; and the LED module is used for illumination work. According to the intelligent light-operated LED circuit, illumination control and illumination adjustment control can be automatically carried out according to ambient illuminance, the intelligence of the circuit is improved, and the working efficiency of the LED module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of light-controlled LEDs, in particular to an intelligent light-controlled LED circuit. Background Art

[0002] LED lamps have the advantages of energy saving and environmental protection, and have been widely used in the lighting industry. They have a light control function and can automatically turn on and off the lights by detecting the surrounding ambient light, which greatly facilitates people's lives and has broad application prospects. The light-controlled LED circuit in the existing technology generally adopts a photoresistor, a 555 trigger circuit and an LED module to realize light-controlled lighting. The photoresistor detects the ambient light and triggers the lighting of the LED module through the 555 trigger circuit when the ambient light is dark. However, due to the low intelligence of the circuit, the lighting efficiency of the LED module is low, making it impossible to adjust the lighting brightness of the LED module according to the brightness of the ambient light while the LED module is performing lighting work. Therefore, there is room for improvement. Utility Model Content

[0003] The embodiments of the present invention provide an intelligent light-controlled LED circuit to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] An intelligent light-controlled LED circuit includes: a power supply module, an ambient light detection module, a lighting control module, a lighting level detection module, a lighting adjustment module, a constant current drive module and an LED module;

[0006] A power module, configured to receive AC power, perform voltage reduction, rectification, filtering, and voltage stabilization on the AC power, and output first power;

[0007] an ambient light detection module, connected to the power module, configured to receive first electrical energy, detect the brightness of the ambient light, and output a first detection signal;

[0008] a lighting control module connected to the power module and the ambient light detection module, configured to set a first voltage threshold and output a first control signal when a first detection signal is lower than the first voltage threshold;

[0009] an illumination level detection module, connected to the illumination level detection module, configured to set a second voltage threshold and perform subtraction processing on the second voltage threshold and the first detection signal, and output a first adjustment signal;

[0010] a lighting adjustment module connected to the lighting level detection module and the power supply module, configured to receive the first adjustment signal, perform voltage division processing on the first electric energy, and output a second adjustment signal;

[0011] a constant current driving module, connected to the lighting control module, the lighting adjustment module, and the power supply module, configured to receive a first control signal, perform constant current adjustment processing on the input first electric energy, and drive the lighting operation of the LED module; and adjust the lighting brightness of the LED module upon receiving a second adjustment signal;

[0012] The LED module is connected to the constant current drive module and the power supply module, and is used to receive the electric energy output by the constant current drive module and perform lighting work.

[0013] As a further solution of the present invention: the power module includes a power interface, a power processing device and a first capacitor; the ambient light detection module includes a first photoresistor and a first potentiometer;

[0014] Preferably, the first end and the second end of the power interface are respectively connected to the first end and the second end of the power processing device, the third end of the power processing device is connected to the first end of the first capacitor and the first end of the first photoresistor, the second end of the first photoresistor is connected to one end of the first potentiometer, and the second end of the first capacitor, the fourth end of the power processing device, the other end of the first potentiometer and the slider end are all grounded.

[0015] As a further solution of the present invention: the lighting control module includes a first diode, a fourth capacitor, a first controller, a second capacitor, a first switch tube and a first resistor;

[0016] Preferably, the anode of the first diode is connected to the second end of the first photoresistor, the cathode of the first diode is connected to the second end and the sixth end of the first controller and is grounded through the fourth capacitor, the collector of the first switching tube, the fourth end and the eighth end of the first controller are all connected to the first end of the first capacitor, the first end of the first controller is grounded, the fifth end of the first controller is grounded through the second capacitor, the third end of the first controller is connected to the base of the first switching tube, and the emitter of the first switching tube is connected to the constant current drive module and is grounded through the first resistor.

[0017] As a further solution of the present invention: the constant current driving module includes a first driver, a second resistor, a third capacitor, a fifth resistor, a sixth resistor, and a second power tube; the LED module includes a second diode, a first inductor, and an LED module;

[0018] Preferably, the sixth end of the first driver is connected to one end of the second resistor and is grounded through the third capacitor, the other end of the second capacitor is connected to the first end of the first capacitor, the cathode of the second diode and one end of the LED module, the anode of the second diode is connected to the drain of the second power tube and is connected to the other end of the LED module through the first inductor, the source of the second power tube is connected to the fourth end of the first driver and is grounded through the sixth resistor, the gate of the second power tube is connected to the fifth end of the first driver, the eighth end of the first driver is grounded through the fifth resistor, the third end of the first driver is grounded, the second end of the first driver is connected to the lighting adjustment module, and the seventh end of the first driver is connected to the emitter of the first switching tube.

[0019] As a further solution of the present invention: the lighting adjustment module includes a third resistor, a first power tube and a fourth resistor;

[0020] Preferably, one end of the third resistor is connected to the first end of the first capacitor, the other end of the third resistor is connected to the drain of the first power tube, the source of the first power tube is connected to the second end of the first driver and grounded through the fourth resistor, and the gate of the first power tube is connected to the illumination level detection module.

[0021] As a further solution of the present invention: the illumination level detection module includes a first power supply, a seventh resistor, a second potentiometer, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor and a first operational amplifier;

[0022] Preferably, the first power supply is connected to one end of the second potentiometer through the seventh resistor, the other end of the second potentiometer is grounded through the eighth resistor, the slider end of the second potentiometer is connected to one end of the eleventh resistor and the in-phase end of the first op amp through the tenth resistor, the other end of the eleventh resistor is grounded, the inverting end of the first op amp is connected to one end of the ninth resistor and connected to the output end of the first op amp and the gate of the first power tube through the twelfth resistor, and the other end of the ninth resistor is connected to the second end of the first photoresistor.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the intelligent light-controlled LED circuit of the present invention detects the ambient light illumination by the ambient light detection module, and when the light level is lower than the set first voltage threshold, the lighting control module will control the constant current drive module to start constant current regulation to drive the lighting of the LED module, and the lighting level detection module controls the signal obtained by voltage division of the lighting regulation module according to the size of the ambient light and the set second voltage threshold, and then the constant current drive module controls the brightness of the LED module, and can automatically perform lighting control and lighting regulation control according to the ambient light illumination, thereby improving the intelligence of the circuit and the working efficiency of the LED module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic block diagram of the principle of an intelligent light-controlled LED circuit provided by an example of the present utility model.

[0026] Figure 2 This is a circuit diagram of an intelligent light-controlled LED circuit provided by an example of the present utility model.

[0027] Figure 3 This is a connection circuit diagram of the lighting level detection module provided by an example of the present utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In one embodiment, see Figure 1 , an intelligent light-controlled LED circuit, comprising: a power supply module 1, an ambient light detection module 2, a lighting control module 3, a lighting level detection module 4, a lighting adjustment module 5, a constant current drive module 6 and an LED module 7;

[0030] Specifically, the power module 1 is used to receive AC power and perform voltage reduction, rectification, filtering and voltage stabilization on the AC power and output the first power;

[0031] an ambient light detection module 2, connected to the power module 1, configured to receive first electrical energy, detect the brightness of ambient light, and output a first detection signal;

[0032] a lighting control module 3 connected to the power module 1 and the ambient light detection module 2, configured to set a first voltage threshold and output a first control signal when the first detection signal is lower than the first voltage threshold;

[0033] an illumination level detection module 4, connected to the illumination level detection module 4, configured to set a second voltage threshold and perform subtraction processing on the second voltage threshold and the first detection signal, and output a first adjustment signal;

[0034] The lighting adjustment module 5 is connected to the lighting level detection module 4 and the power supply module 1, and is used to receive the first adjustment signal and perform voltage division processing on the first electric energy to output a second adjustment signal;

[0035] a constant current driving module 6 connected to the lighting control module 3, the lighting adjustment module 5, and the power supply module 1, configured to receive a first control signal and perform constant current adjustment processing on the input first electric energy, thereby driving the lighting operation of the LED module 7, and adjusting the lighting brightness of the LED module 7 upon receiving a second adjustment signal;

[0036] The LED module 7 is connected to the constant current driving module 6 and the power supply module 1 , and is used to receive the electric energy output by the constant current driving module 6 and perform lighting work.

[0037] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power interface, a power processing device and a capacitor, can be connected to AC power and perform voltage reduction, rectification, filtering and voltage stabilization on the AC power; the ambient light detection module 2 can adopt an ambient light detection circuit composed of a photoresistor and a potentiometer, can detect the lighting brightness of the ambient light; the lighting control module 3 can adopt a lighting control circuit composed of a controller composed of 555, a capacitor, a transistor, etc., can set a first voltage threshold, the first voltage threshold is used as the lighting limit value, after the ambient light is lower than the first voltage threshold, it triggers the operation of the controller composed of 555; the lighting level detection module 4 can adopt a lighting level detection circuit composed of a resistor, an operational amplifier, a potentiometer, etc., can A second voltage threshold is set, which is the required lighting brightness of the LED module 7, and then the difference between the second voltage threshold and the signal obtained by the ambient light detection module 2 is determined, and then the working state of the lighting adjustment module 5 is adjusted; the above-mentioned lighting adjustment module 5 can adopt a lighting adjustment circuit composed of a resistor and a power tube, and adjust the constant current value output by the constant current drive module 6 according to the output difference of the lighting level detection module 4; the above-mentioned constant current drive module 6 can adopt a constant current drive circuit composed of an LED driver, a resistor and a power tube, and can perform constant current processing and constant current regulation on the input electrical energy; the above-mentioned LED module 7 can adopt an LED circuit composed of an inductor, a diode and an LED module to perform lighting work and adjust the brightness according to the input electrical energy power.

[0038] In another embodiment, see Figure 1 、 Figure 2 and Figure 3 The power supply module 1 includes a power supply interface, a power supply processing device and a first capacitor C1; the ambient light detection module 2 includes a first photoresistor RG and a first potentiometer RP1;

[0039] Specifically, the first end and the second end of the power interface are respectively connected to the first end and the second end of the power processing device, the third end of the power processing device is connected to the first end of the first capacitor C1 and the first end of the first photoresistor RG, the second end of the first photoresistor RG is connected to one end of the first potentiometer RP1, and the second end of the first capacitor C1, the fourth end of the power processing device, the other end of the first potentiometer RP1 and the slider end are all grounded.

[0040] In a specific embodiment, the power processing device may be composed of a transformer, a rectifier, a capacitor and a voltage stabilizer to perform voltage reduction, rectification filtering and voltage stabilization processing; the first photoresistor RG is in a low resistance state when the light is strong and in a high resistance state when the light is dark.

[0041] Furthermore, the lighting control module 3 includes a first diode D1, a fourth capacitor C4, a first controller IC1, a second capacitor C2, a first switch tube V1 and a first resistor R1;

[0042] Specifically, the anode of the first diode D1 is connected to the second end of the first photoresistor RG, the cathode of the first diode D1 is connected to the second end and the sixth end of the first controller IC1 and is grounded through the fourth capacitor C4, the collector of the first switch tube V1, the fourth end and the eighth end of the first controller IC1 are all connected to the first end of the first capacitor C1, the first end of the first controller IC1 is grounded, the fifth end of the first controller IC1 is grounded through the second capacitor C2, the third end of the first controller IC1 is connected to the base of the first switch tube V1, and the emitter of the first switch tube V1 is connected to the constant current drive module 6 and is grounded through the first resistor R1.

[0043] In a specific embodiment, the above-mentioned first controller IC1 can use an NE555 chip, and the first controller IC1 can set a first voltage threshold. When the voltage at the second end and the sixth end of the first controller IC1 is greater than the first voltage threshold, that is, when it is a high level, the third end of the first controller IC1 outputs a low level. When the voltage at the second end and the sixth end of the first controller IC1 is less than the first voltage threshold, that is, when it is a low level, the third end of the first controller IC1 outputs a high level; the above-mentioned first switching tube V1 can use an NPN transistor.

[0044] Furthermore, the constant current driving module 6 includes a first driver IC2, a second resistor R2, a third capacitor C3, a fifth resistor R5, a sixth resistor R6, and a second power tube Q2; the LED module 7 includes a second diode D2, a first inductor L1 and an LED module;

[0045] Specifically, the sixth end of the first driver IC2 is connected to one end of the second resistor R2 and is grounded through the third capacitor C3, the other end of the second capacitor C2 is connected to the first end of the first capacitor C1, the cathode of the second diode D2 and one end of the LED module, the anode of the second diode D2 is connected to the drain of the second power tube Q2 and is connected to the other end of the LED module through the first inductor L1, the source of the second power tube Q2 is connected to the fourth end of the first driver IC2 and is grounded through the sixth resistor R6, the gate of the second power tube Q2 is connected to the fifth end of the first driver IC2, the eighth end of the first driver IC2 is grounded through the fifth resistor R5, the third end of the first driver IC2 is grounded, the second end of the first driver IC2 is connected to the lighting adjustment module 5, and the seventh end of the first driver IC2 is connected to the emitter of the first switching tube V1.

[0046] In a specific embodiment, the first driver IC2 may be an APS54083 constant current driver; the second power tube Q2 may be an N-channel field effect tube to drive the LED module.

[0047] Furthermore, the lighting adjustment module 5 includes a third resistor R3, a first power tube Q1 and a fourth resistor R4;

[0048] Specifically, one end of the third resistor R3 is connected to the first end of the first capacitor C1, the other end of the third resistor R3 is connected to the drain of the first power tube Q1, the source of the first power tube Q1 is connected to the second end of the first driver IC2 and grounded through the fourth resistor R4, and the gate of the first power tube Q1 is connected to the illumination level detection module 4.

[0049] In a specific embodiment, the first power transistor Q1 may be an N-channel field effect transistor. The greater the conduction degree of the first power transistor Q1 , the smaller the resistance. The third resistor R3 and the fourth resistor R4 are used to perform voltage division.

[0050] Furthermore, the illumination level detection module 4 includes a first power supply VCC1, a seventh resistor R7, a second potentiometer RP2, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12 and a first operational amplifier OP1;

[0051] Specifically, the first power supply VCC1 is connected to one end of the second potentiometer RP2 through the seventh resistor R7, the other end of the second potentiometer RP2 is grounded through the eighth resistor R8, the slider end of the second potentiometer RP2 is connected to one end of the eleventh resistor R11 and the non-inverting end of the first operational amplifier OP1 through the tenth resistor R10, the other end of the eleventh resistor R11 is grounded, the inverting end of the first operational amplifier OP1 is connected to one end of the ninth resistor R9 and is connected to the output end of the first operational amplifier OP1 and the gate of the first power tube Q1 through the twelfth resistor R12, and the other end of the ninth resistor R9 is connected to the second end of the first photoresistor RG.

[0052] In a specific embodiment, the first power supply VCC1, the seventh resistor R7, the second potentiometer RP2 and the eighth resistor R8 set the second voltage threshold; the first operational amplifier OP1 can be an OP07 operational amplifier, which cooperates with the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12 to perform subtraction processing.

[0053] In an intelligent light-controlled LED circuit of this embodiment, AC power is connected to the power interface, and the power processing device performs voltage reduction, rectification, filtering, and voltage stabilization on the AC power. The first photoresistor RG detects ambient light. When the ambient light illumination is lower than a first voltage threshold, the second terminal and the sixth terminal of the first controller IC1 are at a low level, so that the third terminal of the first controller IC1 outputs a high level and controls the first switch V1 to be turned on. The seventh terminal of the first driver IC2 becomes a high level, so that the first driver IC2 cooperates with the second resistor R2, the third capacitor C3, the fifth resistor R5, and the sixth resistor R6 to adjust the ambient light. The conduction degree of the second power tube Q2 is controlled, thereby providing constant current power to the LED module. At the same time, the conduction degree of the first power tube Q1 is driven by the difference between the second voltage threshold set by the first power supply VCC1, the seventh resistor R7, the second potentiometer RP2 and the eighth resistor R8 and the signal detected by the first photoresistor RG and the first potentiometer RP1. When the difference is large, it means that the ambient light has a large gap with the required lighting brightness. At this time, the resistance of the first power tube Q1 is small, and the first driver IC2 increases the lighting brightness of the LED module. When the difference is small, the first driver IC2 reduces the lighting brightness of the LED module.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0055] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An intelligent light-controlled LED circuit, characterized in that: The intelligent light-controlled LED circuit includes: a power supply module, an ambient light detection module, a lighting control module, a lighting level detection module, a lighting adjustment module, a constant current drive module and an LED module; The power supply module is used to receive AC power and perform voltage reduction, rectification, filtering and voltage stabilization on the AC power and output the first power; The ambient light detection module is connected to the power supply module and is used to receive the first electric energy, detect the brightness of the ambient light and output a first detection signal; The lighting control module is connected to the power module and the ambient light detection module, and is used to set a first voltage threshold and output a first control signal when the first detection signal is lower than the first voltage threshold; The illumination level detection module is connected to the illumination level detection module, and is used to set a second voltage threshold and perform subtraction processing on the second voltage threshold and the first detection signal to output a first adjustment signal; The lighting adjustment module is connected to the lighting level detection module and the power supply module, and is used to receive the first adjustment signal and perform voltage division processing on the first electric energy to output a second adjustment signal; The constant current driving module is connected to the lighting control module, the lighting adjustment module and the power supply module, and is used to receive a first control signal and perform constant current adjustment processing on the input first electric energy, and drive the lighting operation of the LED module, and adjust the lighting brightness of the LED module when receiving a second adjustment signal; The LED module is connected to the constant current driving module and the power supply module, and is used to receive the electric energy output by the constant current driving module and perform lighting work.

2. The intelligent light-controlled LED circuit according to claim 1, characterized in that: The power supply module includes a power supply interface, a power supply processing device and a first capacitor; the ambient light detection module includes a first photoresistor and a first potentiometer; The first end and the second end of the power interface are respectively connected to the first end and the second end of the power processing device, the third end of the power processing device is connected to the first end of the first capacitor and the first end of the first photoresistor, the second end of the first photoresistor is connected to one end of the first potentiometer, and the second end of the first capacitor, the fourth end of the power processing device, the other end of the first potentiometer and the slider end are all grounded.

3. The intelligent light-controlled LED circuit according to claim 2, characterized in that: The lighting control module includes a first diode, a fourth capacitor, a first controller, a second capacitor, a first switch tube and a first resistor; The anode of the first diode is connected to the second end of the first photoresistor, the cathode of the first diode is connected to the second end and the sixth end of the first controller and is grounded through the fourth capacitor, the collector of the first switching tube, the fourth end and the eighth end of the first controller are all connected to the first end of the first capacitor, the first end of the first controller is grounded, the fifth end of the first controller is grounded through the second capacitor, the third end of the first controller is connected to the base of the first switching tube, and the emitter of the first switching tube is connected to the constant current drive module and is grounded through the first resistor.

4. The intelligent light-controlled LED circuit according to claim 3, characterized in that: The constant current driving module includes a first driver, a second resistor, a third capacitor, a fifth resistor, a sixth resistor, and a second power tube; the LED module includes a second diode, a first inductor, and an LED module; The sixth end of the first driver is connected to one end of the second resistor and is grounded through the third capacitor, the other end of the second capacitor is connected to the first end of the first capacitor, the cathode of the second diode and one end of the LED module, the anode of the second diode is connected to the drain of the second power tube and is connected to the other end of the LED module through the first inductor, the source of the second power tube is connected to the fourth end of the first driver and is grounded through the sixth resistor, the gate of the second power tube is connected to the fifth end of the first driver, the eighth end of the first driver is grounded through the fifth resistor, the third end of the first driver is grounded, the second end of the first driver is connected to the lighting adjustment module, and the seventh end of the first driver is connected to the emitter of the first switching tube.

5. The intelligent light-controlled LED circuit according to claim 4, characterized in that: The lighting adjustment module includes a third resistor, a first power tube and a fourth resistor; One end of the third resistor is connected to the first end of the first capacitor, the other end of the third resistor is connected to the drain of the first power tube, the source of the first power tube is connected to the second end of the first driver and grounded through the fourth resistor, and the gate of the first power tube is connected to the illumination level detection module.

6. The intelligent light-controlled LED circuit according to claim 5, characterized in that: The illumination level detection module includes a first power supply, a seventh resistor, a second potentiometer, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor and a first operational amplifier; the first power supply is connected to one end of the second potentiometer through the seventh resistor, the other end of the second potentiometer is grounded through the eighth resistor, the slider end of the second potentiometer is connected to one end of the eleventh resistor and the non-inverting end of the first operational amplifier through the tenth resistor, the other end of the eleventh resistor is grounded, the inverting end of the first operational amplifier is connected to one end of the ninth resistor and is connected to the output end of the first operational amplifier and the gate of the first power tube through the twelfth resistor, and the other end of the ninth resistor is connected to the second end of the first photoresistor.

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