摘要
利用红外电子识别装置识别和传输动物身份信息(如编号、养殖场、父母代信息等)是一种新的技术尝试。与RFID技术相比,这项技术具有许多优点。目前,制约应答器长期连续应用的最大障碍是其有源式设计。本研究对前期研制的红外传输动物身份智能识别装置进行了改进。采用低功耗元件和间歇式工作方式,由阅读器启动安装在动物耳朵上的应答器,应答器间歇工作,使整个系统的平均工作电流控制在2 mA以下,空闲时工作电流仅为μA级,延长了应答器的使用寿命;采用阵列式设计扩大了阅读器的信号启动和接收范围。实验室及现场测试结果表明:改进后的阅读器能在2 m范围内有效接收应答器的信号,在阅读器阵列边缘45°范围内对应答器正常启动,红外编码信号能够准确双向传输;传输距离和响应时间可调整硬件和软件设计来实现;有源式应答器可连续工作6个月以上。
It is a new technical experiment to use infrared communication to identify and transfer animal information, such as coded number, breed field, information of their parents, and so on. Compared with RFID, this approach has many virtues. Now, the obstacles of continue and long-term usage is that the responder is powered by cell. The im- provement on existed infrared communication animal information identification device has been made and described in this paper. The low power loss electronic components and special working manner of intermission were employed. The responder hanged on animal ear is started up by reader device and works in the manner of intermission. To the whole system, the average working current was less than 2 mA, and only μA-level current is needed at the idle time. The using life of responder is prolonged. LED array is adopted to extend the bound in which the starting signals and replying signals can be received. Test results in laboratory and the test site showed that the coded infrared signals can be cor- rectly transported between the responder and reader device within 2m and within 45° solid angle around reader device. The response time and transmission distance can be regulated through the hardware and software. The power life in service of the responder was over six months.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2006年第1期80-83,共4页
Journal of China Agricultural University
基金
国家高技术研究发展计划资助项目(2003AA209050-2)
教育部重点项目(03018)
关键词
红外通信
身份识别
阵列式阅读器
低功耗设计
infrared communication
information identification
reader in array
less power loss design
作者简介
杜松怀，教授，博士生导师，主要从事电气工程、自动控制技术与应用研究．Email：songhuaidu@cau．edu．cn。
施正香，副教授，通讯作者，主要从事畜禽环境工程研究，E-mail：shizhx@cau．edu．cn
