Abstract
In a dairy farmer, it is an important index to manage the livestock weight for choosing a rearing method. It leads to a profit to know the weight both of dairy cattle and beef cattle. Conventionally, the static measurement is performed using fence or gage. In this paper, dynamic weight measurement of walking livestock is proposed utilizing adaptive filter on walking cycle. In case a livestock walks on the platform of measurement, the measurement signal cannot be expected to be constant, and contains disturbance signals caused by the movement of the livestock to be measured. In order to eliminate the disturbance signals, a walking cycle of the livestock is used to optimize the order and coefficient of adaptive filter. This adaptive filter realized that the difference of computed result and body weight fell in ±1 kg range compared with ±5 kg range of simple moving average. It is confirmed that the dynamic weight measurement has practically sufficient accuracy in experiment for dairy cattle.
