Finger artery sensor and use method thereof

The invention relates to the technical field of sensor elements, in particular to a finger artery sensor which comprises an artery sensor base, a signal amplification ring and a piezoelectric plate are fixedly connected to the upper end face of the artery sensor base, and a filter, a differentiating circuit, an integrating circuit and an adder are arranged in the artery sensor. The signal amplification ring, the piezoelectric plate, the filter, the differentiating circuit, the integrating circuit and the summator are electrically connected, and a cardiac function tester is arranged outside one side of the artery sensor base. Compared with a traditional finger artery sensor, the finger artery sensor enables the waveform measured by the finger artery sensor to be basically consistent with the actual finger artery waveform through the arrangement of the piezoelectric plate, the filter, the differentiating circuit, the integrating circuit and the summator, and therefore the accuracy of artery detection can be gre