Parameter acquisition method of discharging radiation pulse

Abstract

The invention disclosed a parametric acquisition method of discharging radiation pulse, which relates to a digital parameter extraction method of pulse signals and aims at solving a contradiction between high speed sampling rate and large sampling data quantity in the current pulse acquisition technique. The method comprises the steps that: pulse detection signals are carried out high speed analog-digital conversion to be conversed into continuous digital pulse signals; the digital signals are compared with a trigger level, and pulse capture is started if the digital signals are higher than the trigger level and stopped later if the digital signals are lower than the trigger level and a latched pulse parametric data group is output; in order to reduce effective output flow rate and maintain a maximum dynamic range, the trigger level automatically adjusts according to the frequency of output pulse in a unit adjustment period and under the control of negative feedback algorithm; the pulse parameter values output comprises peak value, peak value time and pulse width. The method of the invention can be applicable to parametric acquisition of thunderbolt or local discharging pulse signals and pulse signal acquisition at other occasions.

Description

technical field [0001] The invention relates to a parameterized acquisition method of pulse signals, in particular to a parameterized acquisition method of lightning and partial discharge radiation pulse signals. Background technique [0002] In the fields of engineering measurement and scientific research, it is often necessary to face continuous and random pulse events. These pulse-type events have several common features: [0003] 1. The moment of appearance is completely random, or it is controlled by complex and multiple reasons, and there is no obvious occurrence rule; [0004] 2. The duty cycle of the pulse signal is very small, and a large amount of noise floor "zero data" has no value contribution to measurement and research; [0005] 3. The effective bandwidth of the pulse is very wide, and the energy is very concentrated in time distribution; [0006] 4. There are many interference pulse signals caused by other reasons on the measurement signal, and it is diffi...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problems of low sampling rate in the prior art, difficulty in distinguishing the interference signal from the target signal, or the missing of the discharge pulse signal due to the reduction of the sampling rate due to the huge amount of data, so as to solve the problem of high speed in the existing pulse acquisition technology. The contradiction between the sampling rate and the huge amount of sampling data provides a high-speed acquisition method that can continuously record the parameters of the random pulse signal of lightning or partial discharge radiation. The identification and parametric analysis of the discharge pulse can realize the recording of the key information of the discharge pulse (pulse signal peak value, peak time, pulse width), avoid the storage and transmission of a large amount of useless data, and thus realize the high-speed parametric recording and analysis of high-speed continuous pulse information, statistics

Images