基于三轴GMR传感器的无线车位检测系统  

Wireless Vehicle Detecting System Based on Three-axis GMR Sensor and ZigBee

作　　者：邹初建 钱正洪[1] 白茹[1] 朱礼尧[1] 刘洋[1] 吕海洋[1] 张星波[1] 

机构地区：[1]杭州电子科技大学磁电子中心,浙江杭州310018

出　　处：《仪表技术与传感器》2014年第9期62-65,共4页Instrument Technique and Sensor

基　　金：浙江省"磁电子材料和器件"高校创新团队资助项目(2009[171]);浙江省重点科技创新团队资助项目(2010R50010);浙江省重大科技专项资助项目(2011C11047)

摘　　要：为了解决城市停车难的问题,文中研制了一种基于三轴GMR传感器的无线车位检测系统。该系统的车位检测节点采用东方微磁科技有限责任公司生产的高灵敏度双轴SAS022-1和单轴VA100F3自旋阀巨磁阻传感器来组合成三轴GMR传感器,通过检测车辆对地磁的扰动来判断车位是否有车辆存在;各车位检测节点采集的数据通过树型拓扑结构的ZigBee网络层层传递到上位PC机,并显示车位信息。经过实验表明,车位检测节点具有体积小、功耗低,能准确的判断车位中车辆是否存在,组建的树型通信网络在停车场能得到更普遍的应用。In order to solve the difficult problem of parking in the city, the wireless vehicle detecting system based on three- axis GMR sensor was designed. The GMR sensor of vehicle detecting node was composed of SAS022-1 and VA100F3 which were characterized by high sensitivity. The vehicle detecting node was used to detect disturbances of geomagnetic and determine existence of vehicle. The collected data was transmitted from the vehicle detecting node to PC through tree network, and was displayed on com- puter. The results indicate that the improved system has the low cost,low power consumption and small size. The vehicle detecting node can accurately decide the presence of vehicle by three-axis GMR sensor, and tree network will be widely used in parking lots.

关 键 词：三轴GMR传感器 ZIGBEE 树型网络 体积小 功耗低 

分 类 号：TN4[电子电信—微电子学与固体电子学]