光测高电压与分电平脉冲计数法

本文首先介绍了光测电压的原理及其常用的信号处理方法──小信号调制线性区法。在此基础上提出了一种在过调制状态实现光测电压信号检测的新方法──分电平脉冲计数法。文章给出了分电平脉冲计数法中被测电压的计算公式、参考电平的设置方法及对电路的要求。文章通过计算，证明该法可大幅度提高系统的信噪比及测量的动态范围，并展示了该法在测量方式上的灵活性。

The Optical Measurement of High Voltage and the Graduated Level Pulse Counting

The paper states in brief the principle of optical measurement of high voltage andthe linear-area modulating Method of small signal.A new method, the graduated levelpulse counting method used in excess modulation is then introduced. Fonnulae for themeasured voltage,together with the method of reference level setting and the circuit blockdiagram,are given. It is analysed that the new method may largely improve the signal tonoise ratio and increase the dynamic ramge,and a variety of measuring schemes may bechosen to meet defferent objetives.