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A High Voltage Signal Isolation Transmission System

A transmission system and signal isolation technology, applied in the direction of voltage/current isolation, etc., can solve problems such as poor stability, inability to realize small signal transmission, etc., and achieve the effect of good restoration effect.

Inactive Publication Date: 2018-11-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects in the prior art that small signal transmission cannot be realized and the stability is not good, the purpose of the present invention is to solve the above technical problems

Method used

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  • A High Voltage Signal Isolation Transmission System
  • A High Voltage Signal Isolation Transmission System
  • A High Voltage Signal Isolation Transmission System

Examples

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Embodiment 1

[0042] The high-voltage signal isolation transmission system of Embodiment 1 is formed by sequentially connecting a signal normalization module, a voltage bias module, a voltage-frequency conversion module, an electrical isolation transmission module, a frequency-voltage conversion module, an active filter module, and a bias restoration module;

[0043] figure 2 Be the signal normalization module of embodiment 1, this signal normalization module is attenuation circuit, by R 11 , R 12 , R 13 , R 14 , R 15 and 15V power supply element IC1 (IC21, IC22, IC6 and IC7 in the follow-up device all have the same function as IC1); among them, R 14 =R 15 =R 11 , The attenuation here is mainly for the low-voltage side signal (0~100V) output by the RC voltage divider on 100kV / 100V; it can be seen that R 11 The first end of the R 13 The first terminal and the negative pole of IC1 are common ground, R 12 The first end of the R 11 The second terminal connection, as the input ter...

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Abstract

The invention discloses a high-voltage signal isolating transmission system, and the system comprises a voltage bias module, a voltage frequency conversion module, an electric isolation transmission module, a frequency voltage conversion module, an active filtering module, and a bias restoring module. The voltage bias module is used for applying a bias voltage to an input signal, and obtaining a first voltage signal. The voltage frequency conversion module is used for converting the first voltage signal into a frequency signal. The electric isolation transmission module is used for the isolating transmission of the frequency signal. The frequency voltage conversion module is used for converting the frequency signal into a second voltage signal, and the active filtering module is used for filtering sawtooth wave noise in the second voltage signal, and restoring the second voltage signal. The bias restoring module is used for removing a bias voltage from the first voltage signal restored from the active filtering module. The system is good in signal restoration effect, is high in precision, is low in signal time delay, is low in cost, and meets the requirements of most of high-voltage signals on isolating transmission.

Description

technical field [0001] The invention belongs to the field of high-voltage isolation, and more specifically relates to a high-voltage signal isolation transmission system. Background technique [0002] Electron cyclotron resonance heating (Electron Cyclotron Resonance Heating, ECRH) system can be used for plasma heating. The entire ECRH system is on a high-voltage platform of -80kV, and the minimum isolation requirement is 100kV. Some power connections with constant parameters can achieve high-voltage isolation through isolation transformers. However, even for a high-voltage linear isolation optocoupler, its isolation can only be tens of kilovolts at most. Therefore, based on the isolated transmission of control signals and sampling signals, separate optoelectronic isolation methods are essential. In addition, the sampling signal also needs to achieve information transmission within a few hundred microseconds, and the maximum delay cannot exceed 1ms, and the high sampling si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R15/24
CPCG01R15/24
Inventor 王之江崔芳泰夏冬辉余振雄孙道磊肖集雄刘昌海曾中
Owner HUAZHONG UNIV OF SCI & TECH
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