Research Of Inteligent Parking System Based On ZigBee

With the development of modern science and the raising of people's living standard, private cars has increasing dramatically. The contradiction between the car parking and the crowded city is becoming more and more promient. Public parking area is increasingly unable to meet more and more parking demand. How to make full use of limited parking resource to satisfy the anchor vehicles demand, became the hot issues need to be solved. Intelligent parking system using ZigBee wireless communication technology and sensor network technology, parking detection, parking guidance and intelligent lighting etc. Function subsystem together, through the overall management, providing people with safer, more comfortable and more convenient parking environment.This thesis analyses the main problem of the current intelligent parking system, comparing the pop methods of wireless communication technology, it is considered that the emerging low speed, low power consumption, low costs of the wireless network technology is the most suitable for this intelligent parking system. So we constructe the checking nodes combined ZigBee chip CC2430 with ultrasonic sensors,which composed of the networking with each wireless nodes, formatting the powerful ZigBee mesh network.In this paper, the ZigBee coordinator is connected together by CAN bus, the core of the ZigBee coordinator through the CAN-RS232 interface card which is connected to the computer, then sending the control commands to the empty parking spaces which the vehicle towards will be pulling down; the guide information will be displaying through the LED screen.This paper analyzes deeply the core of ZigBee software:operating system abstraction layer OSAL. ZigBee's software is based on the rotary-type operating system queries, tasks and events is always throughout the OSAL implementation concept, by OSAL correct implementation of the application layer to ensure the smooth realization of user tasks.