Automotive pressure sensor typesThere are many types of automotive pressure sensors, including but not limited to:
Oil pressure sensor: For the oil pressure control of brake systems with oil pressure booster, it detects the pressure of the reservoir, the closing or disconnecting signal of the output pump, and the abnormal oil pressure alarm.
Intake pressure sensor: Monitors the intake pressure of the engine to ensure the normal operation of the engine. By adjusting the intake volume and valve opening, the output power and fuel economy of the engine can be controlled.
Tire pressure sensor: real-time monitoring of tire air pressure to ensure driver and passenger safety. When the tire pressure is too low or too high, the sensor will sound an alarm to remind the driver to adjust the pressure in time.
Basic principles of pressure sensorsThe main working principle of pressure sensor includes piezoelectric effect, piezoresistive effect, strain effect and so on. Among them, piezoelectric sensors use the piezoelectric effect, that is, some materials will produce charges when subjected to external forces, by measuring these charges to sense pressure changes; Piezoresistive sensor makes use of piezoresistive effect, that is, the resistance value of the material will change when it is subjected to pressure, and senses the pressure by measuring the change of resistance value. The strain sensor uses the strain effect, that is, the material will deform when subjected to external force, and senses the pressure by measuring the deformation.