CN217936016U

CN217936016U - Photosensitive induction module

Info

Publication number: CN217936016U
Application number: CN202221388615.2U
Authority: CN
Inventors: 田涛
Original assignee: Huizhou Qirui Electric Co ltd
Current assignee: Huizhou Qirui Electric Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-11-29
Anticipated expiration: 2032-06-06

Abstract

The utility model relates to a photosensitive induction module, including master control circuit, the light sampling circuit and the execution circuit of being connected with master control circuit, wherein execution circuit includes lighting circuit, switch tube, light compensation circuit and comparator circuit. When the light sampling circuit monitors that the external illumination reaches a set value, the main control circuit controls the switch tube to be conducted and starts the lighting circuit; during the working period of the lighting circuit, the output signal of the main control circuit is modulated and output to the comparator circuit through the optical compensation circuit, and compared with the signal input to the comparator by the conduction signal end of the optical sampling circuit, the signal conduction end of the optical sampling circuit is larger than the set signal value of the optical compensation circuit, the lighting circuit is continuously started, otherwise, the lighting circuit is closed. The module can effectively solve photosensitive induction device and open the back in using and receive self illuminance influence, judge inaccurate to external environment illuminance, the problem that can not effectively close.

Description

Photosensitive induction module

Technical Field

The utility model relates to the field of lighting technology, particularly, relate to a photosensitive induction control's lighting circuit.

Background

Along with the continuous development of the internet of things, the lighting lamp is gradually developed into an inductive switch from an original manual switch, and the lamp can be mutually controlled, so that the automation and the intellectualization of the lamp are realized.

The lighting circuit controlled by the inductive switch comprises photosensitive induction, infrared induction, microwave induction and the like. For example, the induction circuit is applied to a wardrobe, when a person opens a wardrobe door to look for clothes, an illuminating lamp in the wardrobe is turned on, and after the clothes are looked for and the wardrobe door is closed, the illuminating lamp is turned off. In this kind of similar application occasion of wardrobe, infrared induction control's lighting circuit often exists and is sheltered from the unable condition of opening the cabinet door of sensing the people by the clothes. The microwave induction mode needs to continuously send microwave signals outwards, so that power consumption is reduced, and meanwhile, people mistakenly judge that the door is opened through the cabinet side. The photosensitive sensing mode is relatively energy-saving and low in misjudgment rate. But the present photosensitive induction mode can't distinguish external light brightness and self illumination luminance, adopts to sense external luminance and opens when opening the cabinet door generally, closes the mode control in the settlement time, and this kind of control mode also has a great deal of inconvenience in actual use, and people's use is experienced relatively poorly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an application scenario suitable for photosensitive induction device makes photosensitive induction control's realization humanized and convenience more.

The utility model provides a photosensitive induction module. The photosensitive induction module comprises a master control circuit and an optical sampling circuit connected with the master control circuit, the master control circuit controls the action of the execution circuit through the sampling result of the optical sampling circuit, and the execution circuit comprises a lighting circuit, a switching tube connected with the lighting circuit, an optical compensation circuit and a comparator circuit. The optical compensation circuit is connected with the main control module to receive the pulse modulation signal output by the main control module, the optical compensation circuit inputs the modulated signal to a first input end of a comparator circuit, a conduction signal end of the optical sampling circuit is connected with a second input end of the comparator, and an output end of the comparator circuit is connected with the main control circuit; the control end of the switching tube is connected with the main control circuit; when the light sampling circuit monitors that the external illumination reaches a set value, the main control circuit controls the switch tube to be conducted and starts the lighting circuit; during the working period of the lighting circuit, the output signal of the main control circuit is modulated and output to the comparator circuit through the optical compensation circuit, and compared with the signal input to the comparator by the conduction signal end of the optical sampling circuit, the signal conduction end of the optical sampling circuit is larger than the set signal value of the optical compensation circuit, the lighting circuit is continuously turned on, otherwise, the lighting circuit is turned off, and the ambient light is detected and accurately judged during the working period of the lighting circuit so as to effectively control the turning on and turning off of the lighting circuit.

When the optical compensation circuit is applied specifically, the optical compensation circuit comprises a resistor connected between a direct-current power supply and the ground in series, a connecting point between the resistors connected in series is grounded through a first capacitor, and meanwhile, the connecting point is connected to a signal of the main control circuit and transmits the signal to a first input end of the comparator circuit after being modulated.

When the optical sampling circuit is used specifically, the comparator circuit adopts a comparator chip, the first input end of a group of corresponding comparators in the comparator chip is connected with the modulation signal, the second input end of the group of comparators is connected with the conduction signal end of the optical sampling circuit, and the output ends of the corresponding comparators are connected with the main control circuit.

In specific application, the lighting circuit can adopt an LED lamp or a series of LED lamp strings.

In a specific application, the optical sampling circuit can adopt a photoresistor or a phototriode device.

The photosensitive induction module necessarily also comprises a power supply circuit.

Compared with the prior art, the module of the utility model can effectively solve the problems that the photosensitive induction device is influenced by the illuminance of the photosensitive induction device after being opened in application, the judgment on the illuminance of the external environment is inaccurate, and the photosensitive induction device can not be effectively closed; just photosensitive induction module in practical application, energy-conserving than the microwave response, the response is reliable and more stable.

Drawings

Fig. 1 is a schematic diagram of a circuit principle according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings.

As shown in fig. 1, in this embodiment, the photosensitive sensing module of the present invention includes a main control circuit, an optical sampling circuit, a lighting circuit, a switch tube, an optical compensation circuit, a comparator circuit, and a power supply circuit. The lighting circuit, the light compensation circuit and the comparator circuit jointly form an execution circuit. When the light sampling circuit is used specifically, the main control circuit controls the on and off of the switch tube through the sampling result of the light sampling circuit so as to control the on or off of the lighting circuit.

The optical compensation circuit comprises a resistor connected between a direct current power supply and the ground in series, the connection point of the direct current power supply and the ground is grounded through a capacitor, and meanwhile, the connection point is connected with a signal of the main control circuit. The optical compensation circuit receives the pulse modulation signal output by the main control circuit and inputs the modulated signal to the first input end of the comparator circuit, the conduction signal end of the optical sampling circuit is used for providing a signal for the second input end of the comparator, and the output end of the comparator circuit is connected with the main control circuit. The control end of the switching tube is connected with the main control circuit.

When the light sampling circuit monitors that the external illumination reaches a set value, the main control circuit controls the switch tube to be conducted and started. During the working period of the lighting circuit, the output signal of the main control circuit is modulated and output to the comparator circuit through the optical compensation circuit, and compared with the signal input to the comparator by the conduction signal end of the optical sampling circuit, only the signal input by the signal conduction end of the optical sampling circuit is larger than the set signal value input by the optical compensation circuit, the lighting circuit is kept on, otherwise, the lighting circuit is closed. Therefore, the detection and accurate judgment of the ambient light during the working period of the lighting circuit are realized, the on-off of the lighting circuit is effectively controlled, and the inaccurate judgment of the photosensitive circuit caused by the illumination of the lighting circuit is avoided.

The lighting circuit can adopt an LED lamp or a series of LED lamps. The optical sampling circuit can sample a photoresistor or a phototriode device.

In the embodiment shown in fig. 1, the main control circuit adopts an intelligent chip ME1, and specifically, a single chip microcomputer can be adopted. The optical sampling circuit adopts a photoelectric triode CDS, and the lighting circuit adopts a single LED lamp. The anode of the LED lamp is connected with a fixed 24V power supply through a resistor RX1, the cathode of the LED lamp is grounded through a switch tube Q3, and the control end of the switch tube is connected with one port of an intelligent chip ME1 through a resistor. The optical compensation circuit comprises resistors RX2 and RX3 which are connected between a direct current power supply and the ground in series, wherein the connection point of the resistors RX2 and RX3 is connected with a signal of the main control circuit, and the signal is modulated and then transmitted to the first input end of the comparator circuit. The comparator circuit comprises a comparator U3, a first input end of the comparator U3 is connected with a modulation signal, a second input end of the comparator U3 is connected with a conduction signal end of the optical sampling circuit, and an output end of the comparator U3 is connected with the main control circuit.

The power supply circuit comprises a 24V direct current power supply which directly supplies power to the LED lamp. The voltage stabilizing chip U2 converts the 24V direct current voltage into low-voltage direct current VDD to supply power for each chip.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and variations that fall within the spirit and broad scope of the appended claims.

Claims

1. A photosensitive induction module comprises a main control circuit and an optical sampling circuit connected with the main control circuit, wherein the main control circuit controls an execution circuit to act through a sampling result of the optical sampling circuit;

the optical compensation circuit is connected with the main control circuit to receive the pulse modulation signal output by the main control circuit, the optical compensation circuit inputs the modulated signal to the first input end of the comparator circuit, the conduction signal end of the optical sampling circuit is connected with the second input end of the comparator, and the output end of the comparator circuit is connected with the main control circuit; the control end of the switching tube is connected with the main control circuit; when the light sampling circuit monitors that the external illumination reaches a set value, the main control circuit controls the switch tube to be conducted and starts the lighting circuit; during the working period of the lighting circuit, the output signal of the main control circuit is modulated and output to the comparator circuit through the optical compensation circuit, and compared with the signal input to the comparator by the conduction signal end of the optical sampling circuit, the signal conduction end of the optical sampling circuit is larger than the set signal value of the optical compensation circuit, the lighting circuit is continuously turned on, otherwise, the lighting circuit is turned off, and the ambient light is detected and accurately judged during the working period of the lighting circuit so as to effectively control the turning on and turning off of the lighting circuit.

2. The photosensitive module of claim 1, wherein the optical compensation circuit comprises resistors RX2 and RX3 connected in series between the dc power supply VDD and ground, and a connection point between the dc power supply VDD and ground is grounded via a capacitor CX2, and the connection point is connected to the signal of the main control circuit, and modulates the signal and transmits the modulated signal to the first input terminal of the comparator circuit.

3. The photosensitive module of claim 1, wherein the comparator circuit comprises a comparator U3, a first input terminal of the comparator U3 is connected to the modulation signal, a second input terminal of the comparator U3 is connected to the conducting signal terminal of the optical sampling circuit, and an output terminal of the comparator U3 is connected to the main control circuit.

4. The photosensitive induction module of claim 1, wherein the illumination circuit is an LED lamp or a series of LED lamps.

5. The photosensitive sensing module of claim 1, further comprising a power supply circuit.

6. The photosensitive induction module according to claim 1, wherein the optical sampling circuit is a photoresistor or a phototriode device.