PVDF (Polyvinylidene Fluoride) piezoelectric sensor device capable of realizing pressing holding

The invention discloses a PVDF piezoelectric sensor device capable of realizing press holding, which comprises a PVDF piezoelectric sensor for sensing a press action and a press detection holding circuit for detecting a press holding action, and is characterized in that the PVDF piezoelectric sensor adopts a PVDF film sensor, the PVDF piezoelectric sensor is bonded on a surface to be detected, and the press detection holding circuit is connected with the PVDF piezoelectric sensor. And the PVDF piezoelectric sensor is connected with and outputs an induction signal to the pressing detection holding circuit. According to the invention, the operation amplifier and the pressing detection circuit are slotted to replace a feedback resistor and a pull-up resistor, so that the loss of force converted into charges can be avoided, and the pressing holding function is realized. The problem that the piezoelectric sensor cannot realize signal detection of long-term pressing action for a long time is solved, so that the app