Abstract: An online detection device and method for a piezoelectric device. The device comprises an elastic wave sensor, a sell-detection circuit, a working circuit, a switch circuit and a control chip. The switch circuit is connected with the elastic wave sensor, the self-detection circuit and the working circuit. The sell-detection circuit is connected with the control chip and is used for, When being connected to the elastic wave sensor, generating, a self-detection signal according to the capacitance of the elastic wave sensor. The working circuit is connected with the control chip and is used for, when being connected to the elastic wave sensor, forming a touch detection circuit and detecting an external touch by means of the elastic wave sensor so as to obtain a detection signal.

Abstract: A touch pad pressure detection method and apparatus, a storage medium and a computer device, wherein the method comprises: by means of an elastic wave sensor arranged below a touch pad, detecting a pressing operation on a touch pad to obtain a voltage signal; and determining pressure on the basis of the voltage signal.

Abstract: Disclosed is a piezoelectric sensing apparatus, comprising: a plurality of piezoelectric regions, each piezoelectric region including an anode surface and a cathode surface, wherein the plurality of piezoelectric regions are successively connected from the first piezoelectric region to the last piezoelectric region such that between adjacent piezoelectric regions, surfaces of a same polarity are connected, i.e., one anode surface is connected to another anode surface, while one cathode surface is connected to another cathode surface. The piezoelectric sensing apparatus as provided may effectively boost a high-frequency signal while weaken a low-frequency signal, such that an output waveform signal facilitates improving the positioning accuracy.