The principle of the pressure sensor is to reflect the pressure through the change of the inductance. The inductive pressure sensor is closed and differential protected transformer type. The magnetic density type is that the measured pressure effect causes a shift on the pulse damper, which leads to a change in the equivalent circuit magnetoelectric type of the differential protection inductor, resulting in a differential protection shift of the inductor, and an AC current corresponding to the measured pressure is output according to the bridge circuit. The magnetically dense inductor pressure sensor is suitable for vibration or natural shock environment because of its small size and simple structure. The principle of differential protection transformer is that the pressure effect is on the yellow elastic tube, so that it is positively offset with the working pressure; In addition, it also pushes the connecting core to the back end of the yellow elastic tube, so that the two symmetrical secondary windings connected in the opposite direction are unbalanced, and the output of an operating voltage is positively correlated with the measured pressure.

Capacitance sensor Pressure sensor

The principle of the pressure sensor is to use the capacitor photoresistor to convert the measured pressure into a pressure sensor associated with a certain amount of electricity output. The device is characterized by low input kinetic energy, high dynamic response, and good adaptability to the natural environment.

Pressure sensor Capacitor sensor uses plastic metal ring metal or metal electroplated plastic film as a power capacitor, plastic film deformation due to pressure, plastic film and fixed stationary electrode in the middle of the capacity to produce changes, according to the accurate measurement of the power circuit can output a certain correlation with the working voltage of the electronic signal.