CN210201806U

CN210201806U - Miniaturized infrared switch module

Info

Publication number: CN210201806U
Application number: CN201921240894.6U
Authority: CN
Inventors: Zichuan Yi; 易子川; Kunzhao Li; 李坤钊; Zhaokang Huang; 黄兆康; Siwei Chen; 陈思薇; Like Chen; 陈丽科; Zhi Zhang; 张智; Feng Chi; 迟锋; Chongfu Zhang; 张崇富; Jianjun Yang; 杨健君; Liming Liu; 刘黎明
Original assignee: University of Electronic Science and Technology of China Zhongshan Institute
Current assignee: Fuba Information Technology Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-03-27
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a miniaturized infrared switch module, by drive circuit, induction circuit, warning circuit, keying circuit, burn record port and interface circuit and constitute, induction circuit includes the transmission fluorescent lamp and receives the fluorescent lamp, and be connected with drive circuit's output and input electricity respectively, interface circuit can link to each other with outer circuit module electrical property, the adaptation threshold is low, use in a flexible way, the circuit structure of whole infrared light module of opening is simple, collect audible-visual alarm and infrared detection function in an organic whole, can carry out the high accuracy and detect, and have the advantage of low cost, low-power consumption.

Description

Miniaturized infrared switch module

Technical Field

The utility model relates to an inductive switch equipment, especially a miniaturized infrared switch module.

Background

Infrared switch is applied to fields such as entrance guard more, the remote controller, medical treatment check out test set, the response light, to the product that possesses infrared switch response function, can set up a drive circuit usually and order about infrared fluorescent tube and carry out work, but drive circuit and the inside control unit of product circuit as an organic whole, circuit structure is complicated, if break down, then need carry out troubleshooting maintenance to whole infrared switch device, it is consuming time hard, the volume that also leads to whole product simultaneously is too fat, be unfavorable for the sale of product.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a miniaturized infrared switch module with simple circuit structure and strong applicability.

The utility model provides a technical scheme that its technical problem adopted is:

a miniaturized infrared switch module comprises a driving circuit, a sensing circuit, a warning circuit, a key circuit, a burning port and an interface circuit, wherein the warning circuit, the key circuit, the interface circuit and the burning port are electrically connected with the driving circuit, and the sensing circuit comprises a transmitting light pipe and a receiving light pipe and is electrically connected with the output end and the input end of the driving circuit respectively.

The driving circuit comprises a driving chip U1, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a DC socket J1, a power switch SW1, a resistor R2 and a power light tube L2; the pin 1 of the crystal oscillator is divided into two paths, one path is grounded through the capacitor C2, and the other path is connected with the pin 19 of the drive chip U1; the 2 pins of the crystal oscillator are divided into two paths, one path is grounded through the capacitor C3, and the other path is connected with the 18 pins of the drive chip U1; the 2 pins of the DC socket J1 are grounded, and the 1 pin is grounded through the power switch SW1, the resistor R2 and the power light tube L2 in sequence; the model of the drive chip U1 is STC89C52 RC.

The warning circuit comprises an indicating light pipe L1, a resistor R1, a resistor R4, a triode Q1 and a buzzer B1; the anode of the indicating light tube L1 is connected with 5V voltage, and the cathode is connected with 1 pin of the driving chip U1 through the resistor R1; the B pole of the triode Q1 is connected with the 34 pin of the driving chip U1 through the resistor R4, the C pole is grounded, and the E pole is connected with 5V voltage through the buzzer B1.

The interface circuit comprises a buffer chip U2 and a module interface P1;

pins

1, 2, 3 and 4 of the buffer chip U2 are respectively connected with

pins

24, 23, 22 and 21 of the drive chip U1; the pin 8 of the buffer chip U2 is grounded, the pin 9 is connected with 5V voltage, and the

pins

13, 14, 15 and 16 are connected with the

pins

1, 2, 3 and 4 of the module interface P1; the 5 pin of the module interface P1 is connected to a voltage of 5V.

The key circuit comprises a switch key K2, a capacitor C1, a resistor R3 and a reset key K1 connected to 6 pins of the drive chip U1 in series; the 9 pins of the driving chip U1 are divided into three paths, the first path is grounded through the resistor R3, and the second path and the third path are respectively connected with 5V voltage through the switch key K2 and the capacitor C1.

The emitting light pipe and the receiving light pipe are FC-51.

The utility model has the advantages that: the utility model discloses an induction circuit is including launching fluorescent lamp and receiving fluorescent lamp, and is connected with drive circuit's output and input electricity respectively, and interface circuit can link to each other with outer circuit module electrical property, and the adaptation threshold is low, uses in a flexible way, and the circuit structure of whole infrared light module of opening is simple, collects acousto-optic warning and infrared detection function in an organic whole, can carry out the high accuracy and detect, and has the advantage of low cost, low-power consumption.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

Referring to fig. 1, a miniaturized infrared switch module comprises a driving circuit, a sensing circuit, a warning circuit, a key circuit, a burning port and an interface circuit, wherein the warning circuit, the key circuit, the interface circuit and the burning port are electrically connected with the driving circuit, and the sensing circuit comprises a transmitting light pipe and a receiving light pipe which are respectively electrically connected with the output end and the input end of the driving circuit.

The driving circuit comprises a driving chip U1, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a DC socket J1, a power switch SW1, a resistor R2 and a power light tube L2; the pin 1 of the crystal oscillator is divided into two paths, one path is grounded through the capacitor C2, and the other path is connected with the pin 19 of the drive chip U1; the 2 pins of the crystal oscillator are divided into two paths, one path is grounded through the capacitor C3, and the other path is connected with the 18 pins of the drive chip U1; the 2 pins of the DC socket J1 are grounded, and the 1 pin is grounded through the power switch SW1, the resistor R2 and the power light tube L2 in sequence; the type of the drive chip U1 is STC89C52RC, and the drive chip U1 is a microcontroller with low cost, low power consumption and high performance; the switch module adopts an external power supply mode, and obtains a 5V direct-current power supply through a DC socket J1 with the widest applicability; the crystal oscillator Y1, the capacitor C2 and the capacitor C3 form an oscillation circuit which can generate oscillation current for the driving chip U1, and the crystal oscillator frequency of the crystal oscillator Y1 is 12M.

The warning circuit comprises an indicating light pipe L1, a resistor R1, a resistor R4, a triode Q1 and a buzzer B1; the anode of the indicating light tube L1 is connected with 5V voltage, and the cathode is connected with 1 pin of the driving chip U1 through the resistor R1; the B pole of the triode Q1 is connected with the 34 pins of the driving chip U1 through the resistor R4, the C pole is grounded, the E pole is connected with 5V voltage through the buzzer B1, the buzzer B1 adopts voltage excitation, electric quantity can be effectively saved, and the warning circuit is mainly used for audible and visual alarm.

The interface circuit comprises a buffer chip U2 and a module interface P1;

pins

1, 2, 3 and 4 of the buffer chip U2 are respectively connected with

pins

13, 14, 15 and 16 are connected with the

pins

1, 2, 3 and 4 of the module interface P1; the module interface P1 is connected with 5V voltage through a 5 pin, the buffer chip U2 is ULN2003A in model, and the module interface P1 is a connector with a 5-pin port, is used for being butted with an external module, is mainly used for being electrically connected with a controller of a product needing an infrared switch function, and is low in adaptation threshold and flexible in application.

The transmitting light pipe and the receiving light pipe are FC-51 in model number, have the characteristics of small interference and convenience in assembly, have strong adaptability to ambient light, can transmit infrared rays with fixed frequency, can reflect back when an obstacle in front is detected, and can be received by the receiving light pipe, the detection angle is 35 degrees, the detection distance is between 2 centimeters and 30 centimeters, and the detection precision is high.

The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.

Claims

1. A miniaturized infrared switch module is characterized by comprising a driving circuit, a sensing circuit, a warning circuit, a key circuit, a burning port and an interface circuit, wherein the warning circuit, the key circuit, the interface circuit and the burning port are electrically connected with the driving circuit, and the sensing circuit comprises a transmitting light pipe and a receiving light pipe and is respectively and electrically connected with the output end and the input end of the driving circuit.

2. The miniaturized infrared switch module of claim 1, wherein the driving circuit comprises a driving chip U1, a crystal oscillator Y1, a capacitor C2, a capacitor C3, a DC jack J1, a power switch SW1, a resistor R2 and a power light pipe L2; the pin 1 of the crystal oscillator is divided into two paths, one path is grounded through the capacitor C2, and the other path is connected with the pin 19 of the drive chip U1; the 2 pins of the crystal oscillator are divided into two paths, one path is grounded through the capacitor C3, and the other path is connected with the 18 pins of the drive chip U1; the 2 pins of the DC socket J1 are grounded, and the 1 pin is grounded through the power switch SW1, the resistor R2 and the power light tube L2 in sequence; the model of the drive chip U1 is STC89C52 RC.

3. The miniaturized infrared switch module of claim 2, wherein the warning circuit comprises an indicating light pipe L1, a resistor R1, a resistor R4, a transistor Q1, and a buzzer B1; the anode of the indicating light tube L1 is connected with 5V voltage, and the cathode is connected with 1 pin of the driving chip U1 through the resistor R1; the B pole of the triode Q1 is connected with the 34 pin of the driving chip U1 through the resistor R4, the C pole is grounded, and the E pole is connected with 5V voltage through the buzzer B1.

4. The miniaturized infrared switch module of claim 2, wherein the interface circuit comprises a buffer chip U2 and a module interface P1; pins 1, 2, 3 and 4 of the buffer chip U2 are respectively connected with pins 24, 23, 22 and 21 of the drive chip U1; the pin 8 of the buffer chip U2 is grounded, the pin 9 is connected with 5V voltage, and the pins 13, 14, 15 and 16 are connected with the pins 1, 2, 3 and 4 of the module interface P1; the 5 pin of the module interface P1 is connected to a voltage of 5V.

5. The miniaturized infrared switch module of claim 2, wherein the key circuit comprises a switch key K2, a capacitor C1, a resistor R3 and a reset key K1 connected in series to the 6 pins of the driving chip U1; the 9 pins of the driving chip U1 are divided into three paths, the first path is grounded through the resistor R3, and the second path and the third path are respectively connected with 5V voltage through the switch key K2 and the capacitor C1.

6. The miniaturized infrared switch module of claim 1 wherein the transmitting light pipe and the receiving light pipe are of the type FC-51.