A variable concentrate feeding system for individual dairy cow was developed. The system identified the dairy cow with the RFID technology. According to the differences of the basic diet intake and the individual milk yield, the system could automatically and quantificationally discharge and mingle four kinds of the different concentrates feeds. The experimental results indicated that the response time was 1.47 s, the time for discharging compensated feeds was 15. 15 s, the time to open the railing of the entrance guard was 3. 92 s, the reading distance of the RFID reading system was 52. 3 cm, the alarm level height was 21.5 cm, the identification accuracy of cow was 100% , and the four kinds of concentrates were mixed well, the measurement error was less than 5% , which could satisfy the demands of feeding. Moreover, the system can query and print feeding information online.%设计了一种以槽轮为计量机构、以嵌入式系统为控制系统的奶牛个体精料变量补饲系统.该系统利用无线射频识别技术识别奶牛身份,根据个体奶牛的基础日粮采食量及其产奶量的差异,实现4种精饲料的精准配料、自动计量、混合与投放.检测结果表明,该系统的投料响应时间为1.47 S、同步投料时间为15.15 s、门禁栏杆开启时间为3.92 s、系统读卡距离为52.3 cm、报警料位高度为21.5 cm,系统射频识别正确率为100%,并且4种饲料的混合质量良好,计量误差小于5%,能够满足奶牛的饲喂要求,同时具有奶牛补料数据在线查询和打印功能.
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