Ltd.;Maisonburg (Shenzhen) Technology Development Co.
发明人:
ZHANG, Tongsheng
申请号：
AU2017430855
公开号：
AU2017430855A1
申请日:
2017.09.08
申请国别(地区):
AU
年份:
2020
代理人:
摘要：
A control method and system for filtering out a working frequency interference signal, the control method comprising: first rectifying an electrocardio signal of a preset section of each channel； then acquiring the frequency, amplitude, and phase of a working frequency interference signal in the rectified electrocardio signal of the preset section and, on the basis of the signal to noise ratio weighting of each channel, finding the optimal working frequency interference signal of the system, estimating the frequency and phase, and combining the amplitude of each channel to construct a sine wave； finally performing subtraction processing of the preset section of the electrocardio signal and the reconstructed sine wave signal to acquire an electrocardio waveform signal having the working frequency interference filtered out. Thus, the outcome of filtering out a working frequency interference signal is achieved without producing a ringing effect, such that the measurement is more accurate, thereby solving the problem of signal distortion in existing signal filtering technology caused by the ringing effect produced as a result of using a notch filter for filtering.
