[A new method for measuring linearity of physiological instrumentation].
Based on theoretic analysis, a new method for measuring linearity of physiological instrument and its inner unit circuits is provided. In this method, the sawtooth wave signal, which includes a base wave and its odd-even times harmonic waves, is used to act as input signal, then the linearity of physiological instrument and its inner unit circuits can be measured by analyzing the shape and frequency property of the output signal. The results of experiment show this method is quick and convenient for measuring the linearity of physiological instrument and its inner unit circuits.
Gao
Bin
B
Department of Biomedicine Engineering, Chongqing University of Medical Sciences, Chongqing 400016, China.
Chen
Longcong
L
Hu
Guohu
G
Jiang
Yangming
Y
D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted