Pressure sensors are widely used in hydropower generation, railway transportation, intelligent building, production automation, petrochemical, oil wells, electric power, ships, machine tools, pipelines and many other industries.

Common pressure sensors include resistance strain gauge pressure sensor, semiconductor strain gauge pressure sensor, positive pressure sensor, inductive pressure sensor, capacitive pressure sensor, resonant pressure sensor, capacitive acceleration sensor, optical fiber pressure sensor and so on. Piezoresistive pressure sensor is the most widely used pressure sensor, which has the characteristics of low price, high precision and good linearity.