The vibration sensor is a widely used sensor alarm apparatus 1, the structure of which is applied to feel the weight of the spring vibration parameters of the mechanical movement (such as vibration speed, frequency, acceleration, etc.) of the piezoelectric ceramic sheet through internal and converted into a usable output signal , and then after such LM358 op amp amplifies and outputs a control signal. The vibration sensor is also an electromechanical conversion device, we sometimes call the transducer pick-up, etc. Vibration sensor is one of the key components in test technology, it has the characteristics are: low cost, high sensitivity, stable and reliable, vibration detection can adjust a wide range of benefits to be applied to a large truck, motorcycle vehicle anti-theft system, Eighty percent of vehicles currently are using this type of sensor alarms.