摘要
系统采用无线射频识别(RFID)技术完成一套无线识别装置。该系统主要由阅读器和应答器两部分组成,工作频率为125KHZ。阅读器采用74hc4060对一4MHZ晶体进行分频产生可调的载波频率,应答器将收到的信号整流稳压作为自生的电源,保证了应答器自身无源的设计方案,应答器ID数据转换成曼彻斯特编码后采用负载调制方式传输给阅读器。该系统平均响应时间≤0.5秒,数据传输的正确率高,稳定性好。
The wireless identified device was used by passive radio frequency identification （RFID）.The device works in low frequency including reader and responder.The eader can produce adjusted carried frequence through the 4MHZ crystal divided by the chip 74hc4060 And the responder can receive the signal which is subsequently commutated and voltage-stabilized to ensure that the de- sign of passive transponder, transponder will change the signal into Manchester code that it is transmitted to reader.The device works very well that this average response time is less 0.5 seconds and has high correct data transfer rate. Good stability.
出处
《微计算机信息》
2009年第20期161-163,共3页
Control & Automation
关键词
电感耦合
阅读器
应答器
Inductance Coupling
reader
responder
