A pressure sensor is a type of sensor that converts pressure signals into electrical signals. It is mainly divided into two types: static and dynamic pressure sensors. High frequency is mainly composed of piezoelectric pressure sensors, while low frequency static is mainly composed of piezoresistive silicon and strain type pressure sensors. Dynamic pressure sensors are mainly applied in explosive physics, wind tunnel testing, and free field pressure measurement; Static pressure sensors are mainly used in fields such as safety control and production process control.