基于ZigBee网络和超声定位的智能跟随小车

Intelligently Tracking Car Based on Zigbee Network and Ultrasonic Sensor

基于成熟的IEEE802.15.4协议和ZigBee无线模块,结合超声定位,设计了一种新颖的智能跟随系统;设计的核心为PIC18F4620单片机和MRF24J40MA无线收发模块,通过无线收发来完成节点间的识别与同步,同时以超声测距系统完成对被跟踪目标的定位,通过控制驱动电机动作实现对指定目标的定距离跟随;控制网络以子网的形式控制不同系统的分时定位跟随,同时管理各移动定位系统的入网和切换;样机测试结果表明系统达到了预期的跟随设计要求,具有一定的工程使用价值。

A novel intelligently tracking car is presented in this paper, based on IEEE Standard 802.15.4, Zigbee wireless module and ul- trasonic sensors. The system is designed based on the PIC18F4620 micro--controller and MRF24J40MA RF Transceiver Module. The sys- tem uses RF Communication for the identification and synchronization of nodes, and ultrasonic module for distance measurement and positio- ning, thus controlling the motors in the car to track the specific target at a certain distance. The control network is composed of sub-- nets to control different systems using time--division strategy. Meanwhile, the network is responsible for managing accessing of new systems and switching between sub--nets. Test results prove that the designed system is reasonable for intelligently tracking, and is useful in practical engineering.