Tactile sensing method and device based on PVDF piezoelectric film

The invention discloses a touch sensing method and device based on a PVDF piezoelectric film. The PVDF piezoelectric film is arranged in the touch sensing device. When a finger touches the device, the PVDF piezoelectric film working in a resonant state is subjected to the action of finger force, and the resonant frequency of the PVDF piezoelectric film changes; by measuring and analyzing the change of the resonant frequency of the PVDF piezoelectric film, the sensing of the finger touch state is realized. By adopting the technical scheme, the moment when the finger just touches the device can be identified, and two states that the finger does not touch the device and the finger touches the device can also be identified; and moreover, the PVDF piezoelectric films are arrayed, and the resonant frequency of each PVDF piezoelectric film is measured and analyzed respectively, so that the sensing of finger sliding can be realized, and the device is novel, convenient and comfortable man-machine interaction equipment