| 基于CAN总线的停车位检测器设计与实现 |
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| 引用本文： | 周云城,王维锋,万剑.基于CAN总线的停车位检测器设计与实现[J].交通信息与安全,2014,32(4):137-142. |
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| 作者姓名： | 周云城 王维锋 万剑 |
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| 作者单位： | 江苏省交通规划设计院 南京210004 |
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| 基金项目： | 上海市科学技术委员会项目 |
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| 摘 要： | 为提高停车位信息采集的实时性与可靠性,利用CAN总线通信技术设计并实现1种感知停车场车位空满状态的检测器.提出车位检测器总体技术架构与硬件组成,分析软件设计流程、车位检测优化算法、以及通信报文协议,并给出具体实现方案.通过对100个设备节点进行组网测试,结果表明:检测器的车位状态判定准确率大于98%,车位信息报文上传时延小于1.5ms,丢包率小于1%.
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| 关 键 词： | ,,智能交通,,停车位检测器,,CAN总线,,超声波测距,,报文协议 |
Design and Implementation of Parking Space Detection System Based on CAN-bus |
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| ZHOU Yuncheng,WANG Weifeng,WAN Jian.Design and Implementation of Parking Space Detection System Based on CAN-bus[J].Journal of Transport Information and Safety,2014,32(4):137-142. |
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| Authors: | ZHOU Yuncheng WANG Weifeng WAN Jian |
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| Institution: | (Jiangsu Provincial Communications Planning and Design Institute, Nanjing 210004, China) |
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| Abstract: | In order to improve the reliability and real-time parking information collection,a detector which can sense the free or occupied parking space based on CAN-bus communication technology is designed and realized.This research proposes the overall technical architecture and the hardware structure of the detection system,and it analyzes the software design procedure,the optimization algorithm of parking space detection,and the protocol of communication for a concrete implementation scheme.The test of 100-device node network shows that the accuracy of parking space determination is higher than 98%,while the message upload delay of each node is less than 1.5ms and the packet loss rate is less than 1%. |
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| Keywords: | intelligent transportation parking space detector CAN-bus hardware structure optimization algorithm message protocol |
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