A fir low pass digital filtering method for reducing resource consumption

Abstract

The application provides a FIR low-pass digital filtering method for reducing resource consumption, which comprises the following steps: determining the filtering condition required when the filtering effects of the average filtering method and the FIR filtering method are consistent by comparing the filtering form of the average filtering method with the filtering form of the FIR filtering method; determining the filtering times according to the design parameters of the filtering effect; obtaining the filtering operation point number ratio according to the required filtering condition and the filtering times; filtering the to-be-filtered signal according to the filtering times by using the filtering operation point number ratio. The application uses the average filtering with twice optimal operation point number ratio continuously, can effectively inhibit the influence of various interference signals in the data acquisition process, improves the filtering effect, greatly reduces the resource consumption, can perform high-performance calculation under the condition of consuming extremely low calculation resource, and is convenient for designers to filter.

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