Development of real-time monitoring system of grazing cattle using animal-only frequency band

2008年，内政部和通信部向无线系统分配了无线电波，以跟踪动物的行为。为此，我们研制了一种利用无线频段对放牧奶牛进行实时监测的装置，并对其性能进行了验证。三头荷斯坦奶牛被用于调查。GPS接收器和VHF发射器用于实时监控，戴在每头奶牛身上。通过接收站获取的数据设置为在网上实时显示位置坐标，GPS接收器和实时监控装置定位坐标的定位误差为94.1m。最大误差为745.2米，最小误差为2.4米。定位误差取决于奶牛的行为。静止时的误差(72m)小于移动时(80m)和放牧时的误差(147m)，差异显著(P&lt；0.05)。

The Ministry of Internal Affairs and Communications assigned radio waves to wireless systems that to track the behavior of animals in 2008. So we developed a grazing cow real-time monitoring device using the radio band, and verified its performance. Three Holstein cows were used for surveys. The GPS receiver and the VHF transmitter for real-time monitoring put on each cow. The data obtained via the receiving station was set to indicate the position coordinates in real time on the Web.Positioning error of positioning coordinates by the GPS receiver and the real-time monitoring device was 94.1m. The maximum and the minimum error were 745.2m and 2.4m, respectively. Positioning error depends on behaviours of cows. The error came to have a shorter at rest (72m) than at moving (80m) and grazing (147m), significantly(P<0.05).