Sampling filtering method, device and equipment and computer readable storage medium

Abstract

The invention discloses a sampling filtering method, device and equipment and a computer readable storage medium, and the method comprises the steps: firstly carrying out the weighted filtering processing of a sampling signal, eliminating the glitch noise in an ADC sampling process, and improving the stability of a signal obtained through sampling to a certain degree; dynamic and static characteristic analysis is carried out on a first filtering signal obtained by weighted filtering, so that average filtering and Schmidt filtering can be carried out on the first filtering signal in a targeted manner by combining dynamic and static characteristics of a waveform, and the waveform stability can be effectively improved while the waveform real-time performance can be ensured by using the average filtering in a targeted manner; small-amplitude jitter is eliminated; and finally, performing Schmidt filtering on the second filtering signal obtained by average filtering in a targeted manner according to dynamic and static characteristics of the waveform, thereby further thoroughly eliminating small-amplitude jitter in the waveform while ensuring the stability of the waveform, and enabling the finally obtained ADC sampling value to have stability and real-time performance.

Description

technical field [0001] The invention relates to the field of embedded technology, in particular to a sampling filtering method, device, equipment and computer-readable storage medium. Background technique [0002] In embedded development, ADC (Analog-to-digital converter, Analog-to-digital converter) is a very commonly used external device, common applications such as power detection, temperature detection, pressure detection, etc. ADC sampling is susceptible to inaccurate sampling due to a lot of interference, such as inaccurate ADC clock, inaccurate reference voltage, drift in the measured voltage, etc. At this time, software algorithm filtering can be used to reduce noise interference. However, it is often difficult to take into account the stability and real-time performance of the waveform signal sampled by the ADC through the existing filtering algorithm. The filtered waveform signal is either smooth and stable but the waveform lags, or the waveform has strong real-tim...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose a sampling filtering method, device, equipment and computer-readable storage medium, aiming at solving the actual demand that the existing sampling method based on ADC is difficult to meet the obtained sampling value taking into account stability and real-time performance technical issues

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