CN217037502U

CN217037502U - LED road lighting circuit for automatic light supplement

Info

Publication number: CN217037502U
Application number: CN202220066386.6U
Authority: CN
Inventors: 陈威; 江维; 周丽彬; 仲俊华
Original assignee: Zhejiang Qiqiao Lianyun Biosensor Technology Co ltd
Current assignee: Zhejiang Qiqiao Lianyun Biosensor Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-07-22
Anticipated expiration: 2032-01-07

Abstract

The utility model relates to an LED road lighting circuit for automatic light supplement, which comprises an external wiring fast plug terminal module, a DC-DC buck circuit module, a DC-DC boost circuit module, a 3.3V voltage stabilizing circuit module, a light sensation signal input module and a human body induction signal input module. On the basis that the DC-DC booster circuit is used for providing constant current drive for the LED lamp, light sensation and infrared induction technologies are added, and the functions of automatically switching on and off the lamp according to a light environment and automatically adjusting light according to human body infrared induction are achieved.

Description

LED road lighting circuit for automatic light supplement

Technical Field

The utility model relates to the technical field of illumination, in particular to an LED road illumination circuit for automatic light supplement.

Background

The automatic dimming technology of the LED has remarkable effects on energy conservation of application scenes such as lighting, monitoring and light supplementing, especially equipment for lighting or light supplementing by using energy stored by a new energy battery, can prolong the endurance time of the battery, reduce the charging and discharging times and further prolong the service life of the battery.

When a light supplement equipment product is designed, the lamp is not turned on in the daytime; the LED lamp is slightly on at night under the condition that no person is available, so that the functions of guiding illumination and saving energy are achieved; when a person passes through or enters the area, the LED lamp is fully on, so that the effects of illumination and light supplement are achieved; when the person leaves, the LED or the like enters a slightly bright state again.

The light-operated switch and the infrared induction switch on the market at present only have the function of switching on and off the lamp, and do not have the function of adjusting luminance, simultaneously in order to reduce the wiring, need urgently to integrate and accomplish above function in a system, have proposed high requirement to the circuit design.

Disclosure of Invention

In order to overcome the problems in the prior art, the utility model provides an LED road lighting circuit for automatic light supplement, which can realize the functions of switching and dimming simultaneously and reduce wiring.

Based on the above, the utility model provides an LED road lighting circuit for automatic light supplement, which comprises an external wiring fast plug terminal module, a DC-DC buck circuit module, a DC-DC boost circuit module, a 3.3V voltage stabilizing circuit module, a light sensation signal input module and a human body induction signal input module.

The external wiring fast-plug terminal module comprises a human body induction wiring terminal, a DC12V input wiring terminal, a DC12V/5V output wiring terminal, an LED light source wiring terminal and a photoresistor wiring terminal.

The human body induction wiring terminal 1 is connected with an external human body induction sensor through a quick plug terminal.

Wherein the DC12V input terminal 2 is connected with the DC12V power input through a fast plug terminal.

Wherein, the DC12V/5V output connecting terminal 3 is used as a spare output port.

The LED light source wiring terminal 4 is connected with the external LED light source module through a quick-plug terminal.

The photoresistor wiring terminal 5 is connected with an external photoresistor through a quick-plug terminal.

Advantageous technical effects

The utility model provides a design scheme of a circuit, which is characterized in that on the basis of providing constant current drive for an LED lamp by using a DC-DC booster circuit, light sensation and infrared induction technologies are added, and the functions of automatically turning on and off the lamp according to a light environment and automatically adjusting light according to human body infrared induction are realized.

When the light-sensitive resistor is in a low-resistance state in the daytime or in an environment with enough illumination, the dimming signal of the DC-DC driving chip is in a low level, the driving chip does not work, and the LED lamp is not on; when the light sensitive resistor is in a high-resistance state at night or in an environment without enough illumination, the voltage of the dimming signal of the DC-DC driving chip is increased, the driving chip works, and the LED lamp starts.

Under the unmanned condition, the infrared induction probe signal is in a low level state, the dimming signal voltage of the DC-DC driving chip is 0.72V, the output current is only 10%, and the LED lamp is in a slightly bright state; under the condition that people pass by, the infrared induction probe signal is in a high level state, the dimming signal voltage of the DC-DC driving chip is 2.95V, the output current is 100%, and the LED lamp is in a full-bright state.

Drawings

FIG. 1 is a diagram of an overall structure of an LED road lighting circuit for automatic light supplement;

FIG. 2 is an enlarged view of the external wiring quick-plug terminal module circuit structure of the lighting circuit;

FIG. 3 is an enlarged circuit structure of the DC-DC buck circuit module of the lighting circuit;

FIG. 4 is an enlarged view of the circuit structure of the DC-DC boost circuit module of the lighting circuit;

FIG. 5 is an enlarged view of a circuit structure of a 3.3V voltage stabilizing circuit module of the lighting circuit;

FIG. 6 is an enlarged view of the circuit structure of the human body sensing signal input module of the lighting circuit;

FIG. 7 is an enlarged circuit diagram of the light sensing signal input module of the lighting circuit.

Detailed Description

The following describes embodiments of the present invention in detail by using examples and drawings, so that how to apply technical means to solve technical problems and achieve the technical effects can be fully understood and implemented.

As shown in fig. 1, the present invention provides an LED road lighting circuit for automatic light supplement, which comprises an external connection fast plug terminal module, a DC-DC buck circuit module 6, a DC-DC boost circuit module 7, a 3.3V voltage regulator circuit module 8, a light sensing signal input module 10, and a human body sensing signal input module 9. The supply voltage for the lighting circuit is DC 12V.

The external wiring fast-plug terminal module comprises a human body induction wiring terminal 1, a DC12V input wiring terminal 2, a DC12V/5V output wiring terminal 3, an LED light source wiring terminal 4 and a photoresistor wiring terminal 5.

The human body induction connecting terminal 1 is connected with an external human body induction sensor through a quick plug terminal;

the DC12V input terminal 2 is connected with the DC12V power input through a fast plug terminal;

the DC12V/5V output wiring terminal 3 is used as a standby output port;

the LED light source wiring terminal 4 is connected with an external LED light source module through a quick-plug terminal;

the photoresistor wiring terminal 5 is connected with an external photoresistor through a quick-plug terminal;

the DC-DC buck circuit module 6 converts the power supply voltage DC 9-18V into 5V constant voltage output;

the DC-DC boost circuit module 7 converts the power supply voltage DC 9-18V into DC45V constant current to be output to the LED light source module for supplying power, and adjusts the output state according to the signal states of the light sensing signal input module 10 and the human body sensing signal input module 9;

the 3.3V voltage stabilizing circuit module 8 provides a stable and accurate reference voltage of 3.3V for a dimming signal end in the DC-DC boost circuit module 6;

the light sensation signal input module 10 is connected with an external light-sensitive resistor, when light is irradiated, the light-sensitive resistor is in a low resistance state, a triode in the light sensation signal input module 10 is cut off, an MOS (metal oxide semiconductor) tube is conducted, the voltage of a dimming signal end in the DC-DC boost circuit module 7 is lower than 0.5V, the DC-DC boost circuit module 7 does not work, and the LED light source module is not bright; when the illumination is low or no illumination is provided, the photoresistor is in a high-resistance state, the triode in the light sensation signal input module 10 is conducted to the ground, the MOS (metal oxide semiconductor) transistor is cut off, the voltage of the dimming signal end in the DC-DC boost circuit module 7 is higher than 0.72V, the DC-DC boost circuit module 7 works, and the LED light source module is bright; meanwhile, in order to avoid stroboflash of on and off caused by certain critical brightness, an RC delay circuit is added into the light sensing signal input module 10;

the human body induction signal input module 9 is connected with an external human body induction sensor, when no person passes through the human body induction sensor in an environment with low illumination, the human body induction sensor outputs a low level, an MOS (metal oxide semiconductor) tube in the human body induction signal input module 9 is cut off, the voltage of a dimming signal end in the DC-DC boost circuit module 7 is 0.72V (the voltage of 0.72V is obtained by dividing the voltage of a 3.3V voltage stabilizing circuit module 8 through a divider resistor), the DC-DC boost circuit module 7 works at 10% preset current output, and the LED light source module is slightly bright; when a person passes by, the human body induction sensor outputs a high level, the MOS tube in the human body induction signal input module 9 is conducted, at the moment, the voltage of a dimming signal end in the DC-DC boost circuit module 7 is 2.95V (the 2.95V voltage is obtained by voltage division of a 3.3V voltage stabilizing circuit module 8 through a voltage dividing resistor), the DC-DC boost circuit module 7 works at 100% preset current output, and the LED light source module is fully bright; in an environment with sufficient illuminance, no matter whether people pass through the circuit, the voltage of the dimming signal end in the DC-DC boost circuit module 7 is lower than 0.5V, the DC-DC boost circuit module 7 does not work, and the LED light source module does not light.

All of the above mentioned intellectual property rights are not intended to be restrictive to other forms of implementing the new and/or new products. Those skilled in the art will take advantage of this important information, and the foregoing will be modified to achieve similar performance. However, all modifications or alterations are based on the new products of the utility model and belong to the reserved rights.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a LED road lighting circuit of automatic light filling usefulness which characterized in that includes: the human body induction signal input module comprises an external wiring fast plug terminal module, a DC-DC buck circuit module, a DC-DC boost circuit module, a 3.3V voltage stabilizing circuit module, a light sensation signal input module and a human body induction signal input module;

the external wiring fast-plug terminal module comprises a human body induction wiring terminal, a DC12V input wiring terminal, a DC12V/5V output wiring terminal, an LED light source wiring terminal and a photoresistor wiring terminal;

the human body induction connecting terminal is connected with an external human body induction sensor through a quick plug terminal;

the DC12V input terminal is connected with the DC12V power input through a fast plug terminal;

the DC12V/5V output connecting terminal is used as a standby output port;

the LED light source wiring terminal is connected with the external LED light source module through a quick-plug terminal;

the photosensitive resistor wiring terminal is connected with an external photosensitive resistor through a quick plug terminal;

the DC-DC buck circuit module converts the power supply voltage DC 9-18V into 5V constant voltage output;

the DC-DC boost circuit module converts the power supply voltage DC 9-18V into DC45V constant current to be output to the LED light source module for supplying power, and adjusts the output state according to the signal states of the light sensing signal input module and the human body sensing signal input module;

the 3.3V voltage stabilizing circuit module provides stable and accurate reference voltage of 3.3V for a dimming signal end in the DC-DC boost circuit module.