牧场射频网络中防碰撞技术的研究

Study on the anti- collision technique in the radio frequency network of pasture

为了研究牧场射频网络中存在的对多个牲畜耳标识别会发生数据碰撞的问题,试验采用一种改进的防碰撞算法,利用位锁定和动态分析相结合的方法,只对发生碰撞的位进行二进制处理,数据在传输过程中是动态变化的,只发送已知的信息,接收到的是已知信息的互补位,并对算法进行了性能分析和仿真。结果表明:改进后的算法从操作次数、传输时延、信息吞吐量等方面相比传统算法具有明显优势。说明改进算法可解决多头佩戴耳标的牲畜进入射频区域后引起数据碰撞的问题,提高了耳标识别的效率。

To study the problem of data collision in the identification of multiple ear tags of cattle in the radio frequency network of pasture,the colliding bits were only treated with binary method using an improved anti- collision algorithm,combined with the methods of position locking and dynamic analysis. The data were dynamic during transmission,the known information was only sent,and the received information was the complementary bits of the known information,and the algorithm was also analyzed and simulated. The results showed that the improved algorithm had obvious advantages on the number of operations,transmission delay,data throughput,etc. compared with traditional algorithm. The results indicate that the improved algorithm can solve the problem that many cattle with ear tags cause data collision after entering into radio frequency region,and improve the efficiency of the tag identification.