Pressure sensor, as an indispensable measurement tool in modern industry and scientific research, is mainly used to detect and convert the pressure value expressed by electrical signals. Its working principle is based on physical effects, such as piezoresistive effect, piezoelectric effect, etc., so that the pressure change of the object can be intuitively expressed through electrical signals. This kind of sensor is widely used in various fields, such as automobile manufacturing, aerospace, environmental monitoring, etc., and provides important data support for the stable operation and performance optimization of various equipment. With the continuous progress of technology, the accuracy, stability and reliability of pressure sensors are constantly improving, which has injected new vitality into the development of modern industry.