Online testing system for electrical parameters of photoelectric coupler in remote transmission mode and online testing method for photoelectric coupler

A photoelectric coupler and long-distance transmission technology, which is applied in the field of aerospace electronics measurement, can solve the problem that the secondary radiation cannot be tested offline in a short time, and achieve the effect of improving the test accuracy

Inactive Publication Date: 2014-08-27
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem that the photoelectric coupler cannot be tested off-line in a short time due to the secondary radiation after the neutron source is irradiated based on the ground simulation displacement radiation

Method used

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  • Online testing system for electrical parameters of photoelectric coupler in remote transmission mode and online testing method for photoelectric coupler
  • Online testing system for electrical parameters of photoelectric coupler in remote transmission mode and online testing method for photoelectric coupler
  • Online testing system for electrical parameters of photoelectric coupler in remote transmission mode and online testing method for photoelectric coupler

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Embodiment Construction

[0026] Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] The schematic diagram of the optocoupler online test system is as follows: figure 1 shown. The system mainly includes test board (also known as irradiation board), DUT carrier board, data collector, power supply and host computer and other components. Connect the various components with corresponding data lines or power lines, such as figure 1 The network cable, RS-422 wire, RS232 wire, etc. shown in The cables used are preferably low impedance shielded cables. The function description of each part is as follows:

[0028] 1. The host computer manages the computer (such as a laptop):

[0029] Running system management software (Windows XP SP3 / Win 7-32 operating system platform, management software developed by C voice);

[0030] Responsible for sending control commands to the data collector (via RS-422 interface);

[0031] Receive da...

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Abstract

The invention relates to an online testing system for electrical parameters of a photoelectric coupler in a remote transmission mode, and relates to the technical field of aerospace electronics measurement. The system comprises a testing board, a data collector, a power source and an upper computer. The data collector comprises a signal conditioning circuit, a current-voltage converting circuit, an instrument amplifier, an analog-digital converter and an MCU. According to the system, the remote high-precision testing (within 20 m) of the space radiation sensitive parameter current transfer ratio (CTR), the on-state collector current (IC(on)), the on-state collector-base current (IR), the leakage current (IC(off)) and the saturation voltage drop (VCE(SAT)) of the photoelectric coupler is achieved. The invention further relates to an online testing method for the photoelectric coupler.

Description

technical field [0001] The invention relates to an on-line test system and method for electrical parameters of a photoelectric coupler using a long-distance transmission mode, and in particular to an on-line test system and method for a photoelectric coupler based on small current protection technology. The invention belongs to the technical field of aerospace electronics measurement. Background technique [0002] In the field of aerospace, optocouplers can be used as terminal isolation components in long-line transmission information systems, which can greatly improve the signal-to-noise ratio; they can also be used as signal isolation interface devices in computer digital communication systems to enhance the reliability of computer work. A large number of radiation particles, such as electrons, protons and heavy ions, exist in the space radiation environment. Particle irradiation around the earth causes the degradation of the electrical characteristic parameters of the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 李鹏伟罗磊孙毅于庆奎
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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