奶牛身份射频识别系统的防冲突技术

为了提高奶牛身份的识别度,采用无线射频识别技术来识别奶牛身份的识别系统。该系统采用耳标式电子标签来标记奶牛的身份,并在计算机系统建立一个电子数据档案。由于奶牛身份识别系统实行一畜一标,奶牛养殖规模大,植入的电子标签众多,射频识别技术中多标签存在冲突,因此防止多标签冲突问题是研究的重点。防冲突算法有ALOHA算法和二进制搜索算法两种常见算法:当采用ALOHA算法时,电子标签过多会造成防冲突时间长,甚至会出现判断错误;二进制搜索算法虽然不会出现错误,但用时较长,且安全性差,将二进制搜索算法进行改进成为返回式二进制树形搜索算法,可以解决这些缺点。为此,提出了基于返回式二进制树形搜索算法设计的奶牛身份射频识别系统的防冲突技术,试验表明:该设计可以解决识别系统中的防冲突问题,使系统采集信息与奶牛身份信息一一匹配,且缩短了识别时间,能迅速识别电子标签。

Anti-collision Technology of Cow Identity Radio Frequency Identification System

In view of the problems of management chaos, herd identification and other problems in dairy farming of modern husbandry and the low output of dairy byproducts, the safety traceability problem can not be effectively guaranteed. Therefore, the identification of dairy cows is to solve these problems and achieve the figures The key to production. In order to increase the identity of dairy cattle, a RFID system was used to identify the identity system of dairy cattle. The system used ear tag to mark the identity of dairy cows and set up an electronic data file in the computer system. Dairy cattle identification system to implement a standard livestock, the correct identification of the cow's electronic tag is the key to the operation of the system, dairy farming scale, many embedded electronic tags, radio frequency identification of multiple tags conflict, to prevent multiple label conflicts Is the focus of research. Anti-collision algorithm ALOHA algorithm and binary search algorithm two common algorithms, the two algorithms are compared and found that when using ALOHA algorithm, too many tags will cause anti-collision for a long time, or even appear to judge the error, the binary search algorithm. Although there is no error, it takes a long time and has poor security. The binary search algorithm is improved to be a return binary tree search algorithm, which can solve these shortcomings. The anti-collision technology of cow's identity radio frequency identification system based on the return binary tree search algorithm has been tested. The experiment proves that this design can solve the problem of anti-collision in the identification system. The information collected by the system and cow identity information are matched one by one, can quickly identify the electronic label.