CN103399242A

CN103399242A - Photoelectric coupler detector

Info

Publication number: CN103399242A
Application number: CN2013103546200A
Authority: CN
Inventors: 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2013-11-20

Abstract

The invention provides a photoelectric coupler detector, which is characterized by comprising a 6V direct current power supply, an astable multivibrator circuit, and a vibration signal output and photoelectric coupler detection display circuit, wherein the astable multivibrator circuit is composed of a time-base circuit IC1, a resistor R1, a resistor R2 and an electrolytic capacitor C1; the mode of the time-base circuit IC1 is NE555; the vibration signal output and photoelectric coupler detection display circuit is composed of a photoelectric coupler G1, a photoelectric coupler LED1, a resistor R3 and a photoelectric coupler LED2. The circuits of the photoelectric coupler detector are all made of common electronic components; the photoelectric coupler detector can dynamically detect the performance of the photoelectric coupler more accurately, and enables the working state of the photoelectric coupler to be observed dynamically and intuitively.

Description

The photoelectrical coupler detector

Technical field

The invention belongs to the electronic components test technical field, relate to a kind of photoelectrical coupler detector.

Background technology

Photoelectrical coupler is a kind of electricity～light～power conversion device take light as the media transmission electric signal.It is comprised of light emitting source and light-receiving device two parts.Light emitting source and light-receiving device are assembled in same airtight housing, with transparent insulator, isolate to each other.The pin of light emitting source is input end, the pin of light-receiving device is output terminal, common light emitting source is light emitting diode, light-receiving device is that phototriode, its principle of work of phototriode are: at the photoelectrical coupler input end, add electric signal and make light emitting source luminous, light intensity depends on the size of exciting current, after this illumination is mapped on the light-receiving device that is packaged together, because photoelectric effect has produced photocurrent, by the light-receiving device output terminal, drawn, so just can realize the conversion of electricity～light～electricity.

Generally, use the performance that common multimeter can only the simple test photoelectrical coupler, to more accurately hold the performance of photoelectrical coupler, you need to be linked into photoelectrical coupler in side circuit and survey, in case the performance of photoelectrical coupler has problem, by its lower very trouble of changing of burn-oning.The circuit of photoelectrical coupler detector of the present invention all uses the ordinary electronic element to be made, it can be relatively the accurate performance of testing photoelectronic coupling mechanism dynamically, it can dynamically observe the duty of photoelectrical coupler intuitively.

Below describe photoelectrical coupler detector of the present invention related relevant technologies content in implementation process in detail.

Summary of the invention

Goal of the invention and beneficial effect: more accurately hold the performance of photoelectrical coupler, you need to be linked into photoelectrical coupler in side circuit and survey, in case the performance of photoelectrical coupler has problem, the lower replacing of its weldering of burn-oning are got up and are very bothered.The circuit of photoelectrical coupler detector of the present invention all uses the ordinary electronic element to be made, it can be relatively the accurate performance of testing photoelectronic coupling mechanism dynamically, it can dynamically observe the duty of photoelectrical coupler intuitively.

The circuit working principle: the photoelectrical coupler detector forms the stable multi-oscillation circuit by time base circuit IC1 and resistance R 1, resistance R 2 and electrochemical capacitor C1.After connecting the 6V direct supply, because the voltage on electrochemical capacitor C1 is very low, the 3rd pin of time base circuit IC1 output terminal is high level.The 6V direct supply charges to electrochemical capacitor C1 through resistance R 1 and resistance R 2, voltage on electrochemical capacitor C1 progressively rises, when the voltage on electrochemical capacitor C1 rises to 2/3 direct supply voltage, the upset of time base circuit IC1 internal trigger, the 3rd pin output low level of time base circuit IC1, the internal discharge pipe conducting of time base circuit IC1 simultaneously, electrochemical capacitor C1 powers on to press off and begins through the 7th pin electric discharge of resistance R 2 by time base circuit IC1.When the voltage drop on electrochemical capacitor C1 during to 1/3 direct supply voltage, time base circuit IC1 internal trigger overturns again, the 3rd pin output high level of time base circuit IC1, internal discharge pipe cut-off simultaneously, the 6V direct supply charges to electrochemical capacitor C1 through resistance R 1 and resistance R 2 again, so goes round and begins again and forms vibration.

Time base circuit IC1 output terminal connects photoelectrical coupler G1 and LED 1 by LED 2, when LED 1 and LED 2 flashing, shows that tested photoelectrical coupler performance is intact.If after energising, LED 1 is normal bright or do not work, illustrate that tested photoelectrical coupler damages.

Technical scheme: the photoelectrical coupler detector, it comprises 6V direct supply, stable multi-oscillation circuit, oscillator signal output and photoelectrical coupler detection display circuit, it is characterized in that:

the stable multi-oscillation circuit: it is by time base circuit IC1, resistance R 1, resistance R 2, electrochemical capacitor C1 forms, the model that time base circuit IC1 selects is NE555, the anodal VCC of the 4th pin of time base circuit IC1 and the 8th pin connection circuit, the end of the 7th pin connecting resistance R1 of time base circuit IC1 and an end of resistance R 2, the anodal VCC of the other end connection circuit of resistance R 1, the 2nd pin of time base circuit IC1 and the 6th pin connect the positive pole of electrochemical capacitor C1 and the other end of resistance R 2, the 1st pin of time base circuit IC1 and the negative pole connection circuit ground GND of electrochemical capacitor C1, the 3rd pin of time base circuit IC1 connects oscillatory signal output circuit and photoelectrical coupler detection display circuit,

Oscillator signal output and photoelectrical coupler detection display circuit: it is comprised of photoelectrical coupler G1, LED 1 and resistance R 3, LED 2, the positive pole of the 3rd pin sending and receiving optical diode LED2 of time base circuit IC1, the negative pole of LED 2 connects the 1st pin of photoelectrical coupler G1, the 2nd pin of photoelectrical coupler G1 and the 3rd pin connection circuit ground GND, the 4th pin of photoelectrical coupler G1 passes through the negative pole of resistance R 3 sending and receiving optical diode LED1, the anodal VCC of the anodal connection circuit of LED 1;

The anodal VCC of 6V DC power anode connection circuit, the 6V DC power cathode is connected with circuit ground GND.

The accompanying drawing explanation

Accompanying drawing is the embodiment circuit working schematic diagram that the invention provides a photoelectrical coupler detector; 6V DC power cathode in accompanying drawing is connected with circuit ground GND.

Embodiment

According to photoelectrical coupler detector circuit working schematic diagram shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the described each several part circuit of summary of the invention, and the components and parts technical parameter described in embodiment requires and the circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.

The selection of components and parts and technical parameter

IC1 is time base circuit, and the model NE555 that selects, time base circuit IC1 are 8 pin DIP encapsulation, and each pin function: 1 pin is circuit ground GND, 2 pin are trigger end, 3 pin output terminals, and 4 pin preset ends, 5 pin are for controlling voltage, 6 pin thresholdings (threshold value), 7 pin are discharge end, 8 pin are positive source VCC;

Resistance R 1～R3 is 1/4 metalfilmresistor, and its resistance is respectively 10K Ω, 20K Ω, 430 Ω;

C1 is electrochemical capacitor, capacity and withstand voltage be 10 μ F/16V;

LED 1 and LED 2 are selected respectively ￠ 5 redness, green LED;

The multiway socket that photoelectrical coupler uses, can select 16 pin DIP, zero plug socket;

The 6V direct supply can use the 6V laminated cell.

Circuit production main points and circuit debugging

Because of the circuit structure of photoelectrical coupler detector fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, circuit of the present invention does not need to carry out any debugging substantially, and connecting the 6V direct supply can work;

The capacity of electrochemical capacitor C1 is crucial, it has determined the oscillation frequency of stable multi-oscillation circuit, by adjusting the oscillation frequency of stable multi-oscillation circuit, can change the frequency of LED 1 flicker, by the resistance of changing resistance R 1, resistance R 2 or the capacity that changes electrochemical capacitor C1, can realize.

Claims

1. photoelectrical coupler detector, it comprises 6V direct supply, stable multi-oscillation circuit, oscillator signal output and photoelectrical coupler detection display circuit, it is characterized in that:

described stable multi-oscillation circuit is by time base circuit IC1, resistance R 1, resistance R 2, electrochemical capacitor C1 forms, the model that time base circuit IC1 selects is NE555, the anodal VCC of the 4th pin of time base circuit IC1 and the 8th pin connection circuit, the end of the 7th pin connecting resistance R1 of time base circuit IC1 and an end of resistance R 2, the anodal VCC of the other end connection circuit of resistance R 1, the 2nd pin of time base circuit IC1 and the 6th pin connect the positive pole of electrochemical capacitor C1 and the other end of resistance R 2, the 1st pin of time base circuit IC1 and the negative pole connection circuit ground GND of electrochemical capacitor C1, the 3rd pin of time base circuit IC1 connects oscillatory signal output circuit and photoelectrical coupler detection display circuit,

Described oscillator signal output and photoelectrical coupler detection display circuit are comprised of photoelectrical coupler G1, LED 1 and resistance R 3, LED 2, the positive pole of the 3rd pin sending and receiving optical diode LED2 of time base circuit IC1, the negative pole of LED 2 connects the 1st pin of photoelectrical coupler G1, the 2nd pin of photoelectrical coupler G1 and the 3rd pin connection circuit ground GND, the 4th pin of photoelectrical coupler G1 passes through the negative pole of resistance R 3 sending and receiving optical diode LED1, the anodal VCC of the anodal connection circuit of LED 1;

The anodal VCC of described 6V DC power anode connection circuit, the 6V DC power cathode is connected with circuit ground GND.