This paper designed a kind of piezoelectric sensor based on the personnel distribution of counting device. The pressure to the device in the body seat as a detection signal, piezoelectric sensors in each region of MCU receives the input of the high and low level signal and stored, judge the number of the venue. Can also to personnel distribution of visualization analysis. When someone sitting in the seat, piezoelectric sensor will produce piezoelectric signal, after amplification and detection, the input to the single chip microcomputer, finally displayed on the LCD screen number of personnel ...
