Development of Wireless Sensor for Weigh-in-Motion Using Piezoelectric Ceramic

Abstract

Facing the widespread overrun and overload of vehicle, a wireless sensor for weigh-in-motion is developed by utilizing piezoelectric ceramics in this work. The prototype of sensor mainly consists of stainless steel shell, piezoelectric sensor unit, rubber buffer layer, signal acquisition and wireless transmission system. The sensor prototype is loaded with different amplitudes and frequencies by universal testing machine to simulate the actual reaction of the sensor under the actual wheel loads of vehicles. Through the measurement of several testing conditions, the results show that the sensor accordance with the type II standard of "technical requirements and inspection methods of highway dynamic vehicle weighing equipment".