Pressure sensor, as an important sensing component in modern industry and science and technology, can convert the perceived pressure signal into an electrical signal or other forms of signal output. The working principle of this sensor is based on physical effects, such as piezoresistive effects, piezoelectric effects, etc., allowing it to accurately measure and reflect pressure changes in various environments. In industrial production, pressure sensors are widely used in fluid control, gas detection, automated production lines and other fields to ensure the stability and safety of the production process. At the same time, in the medical, environmental protection, transportation and other industries, pressure sensors also play an indispensable role, such as monitoring blood pressure, detecting air quality, measuring vehicle tire pressure and so on. These applications not only improve work efficiency, but also bring convenience to people's lives.