What is the pressure switch used to convert the measured pressure to what? What is the principle of its working principle?
? When the direction of the force changes, the polarity of the charge also changes
Pressure switch is used to convert the measured pressure into an electrical signal of a device, its working principle is: some of the dielectric in a certain direction by the role of external force deformation, the internal polarization will occur, while in it Of the two opposite surfaces appear positive and negative charge. When the external force is removed, it will return to the non-charged state, this phenomenon is called positive piezoelectric effect.
On the contrary, when the electric field in the direction of the polarization of the dielectric, these dielectrics will be deformed, the electric field removed, the dielectric deformation disappears, this phenomenon is called the reverse piezoelectric effect. A type of sensor developed according to the piezoelectric effect of the dielectric is called a piezoelectric sensor. For example, we used the electronic said.
