Design of vehicle detection system based on ZigBee and AMR

Nowadays, more and more vehicles make traffic heavier day by day, and parking spaces are becoming lack. It leads to parking difficult and disorder. A modernized intelligent parking system (IPS) is designed to help solve these problems. This system is based on ZigBee and Anisotropic magnetoresistance (AMR) technologies. ZigBee is a low-power, low-cost, wireless mesh network standard. ZigBee sensor included in the parking detector of the system is used to transmit processed data connected by AMR sensor. AMR sensor is applied to detect the disturbed earth´s magnetic field intensity when a vehicle is parking in the space. The experiments of IPS working are done, and the results show that the detected disturbance information after processed can illustrate accurately the state of the parking space, free or not.