山地果园蓄电池驱动单轨运输机的在轨位置感知系统

摘要

An on-track position sensing system based on RFID for battery-drive monorail transporter was developed in this study to enable the mountainous orchard battery-drive monorail transporter to sense automatically its on-track position while it is on the move.The system hardware was composed of reader and RFID tag.The reader mainly includes the non-contact reading and writing control chip,power circuit,power amplifier,antenna,microprocessor,EEPROM,etc.The system software can store and identify tag information and matching it with the transporter's on-track position.In the study,the influence of the transporter's driving velocity on the tag reading result is tested,and the label matching and fault-tolerance capability of the system are also tested.The results indicated that:(1) when the transporter's driving velocity was in the range of 0.2 to 0.6 m · s-1,the consistency between the number of correct tag reading towards its counterpart theoretical number was in the range of 97％ to 60％;the higher the velocity was,the lower the consistency was;in the range of the transporter's working velocity,the system can ensure more than one successful tag reading when the transporter drives pass a label.(2) The system software can realize matching tag and location information,and have the fault-tolerance and error correction function.%为实现山地果园蓄电池驱动单轨运输机在运行过程中自动感知其在轨位置,本研究设计了基于RFID的单轨运输机在轨位置感知系统.硬件由读写器和RFID标签构成,读写器主要包括非接触式读写控制芯片、电源电路、功率放大电路、天线、微处理器、EEPROM等.系统软件可实现存储、识别标签信息,并匹配在轨位置.研究中测试了运输机行进速度对标签读取结果的影响,还测试了系统匹配标签和容错的能力.结果表明:(1)运输机的行驶速度介于0.2 ～0.6 m·s-1时,正确读取标签次数与理论值的吻合度介于97％ ～ 60％,速度越快,吻合度越低;在运输机的工作速度范围内,系统能够保证驶过一个标签时成功读取该标签信息1次以上;(2)系统软件能够实现匹配标签与位置信息、容错和纠错等功能.