These are mainly based on some physical effects. For example, the piezoelectric effect: when certain crystalline materials vibrate under mechanical force, an electric charge is generated on their surface. By collecting and measuring these charges, the vibration can be determined. Another principle is electromagnetic induction, which uses the motion of a conductor cutting magnetic lines of force in a magnetic field to generate an induced electromotive force, converting the vibration velocity into an electrical signal. Different types of vibration sensors are like "translators" with different "skills," each demonstrating its unique capabilities according to actual needs.
