Working principle of the pressure sensor is 1, the pressure resistance of resistance strain gauge pressure sensor is one of the main part of resistance strain sensor.
Metal working principle of resistance strain gauge is adsorbed on the substrate material resistance changes of strain resistance produced according to the mechanical deformation phenomenon, commonly known as resistance strain effect.
2, ceramic pressure sensor ceramic pressure sensor based on piezoresistive effect, pressure effect directly in front of the ceramic membrane surface, make the diaphragm produces tiny deformation, thick film resistors printed on the back of the ceramic diaphragm, connected into a wheatstone bridge, as a result of the varistor piezoresistive effect, make the bridge produces a is proportional to the pressure of the highly linear, and the excitation voltage is proportional to the voltage signal and standard signal according to the different calibration of pressure range of 2.
3 mv/V, etc. , can be compatible and strain sensor.
3, diffusion silicon pressure sensor: diffusion silicon pressure sensor working principle is based on the piezoresistive effect, using the piezoresistive effect principle, the medium to be measured directly impact on the pressure of sensor diaphragm (
Stainless steel or ceramic)
, make diaphragm micro displacement is proportional to the medium pressure, the sensor resistance change, use of electronic circuit to detect the change, and the transformation output of a standard measurement signal corresponding to the pressure.
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