电子记圈器

Electric Circle Counter

电子记圈器是给每个运动员身上配带一个频率不同的微型发射机,再用一台接收机分别接收来自不同发射机的信号来进行中长距离赛跑或竞走的记圈工作。

The principle of this instrument is that each person carries a mini-transmitter with different frequeney and the signals from 32 transmitters can be received successively by a receiver. This meets the need of counting circles in Medium-Long distance competition in an athletic meeting. The invention of the Electric Circle Counter is a big reformation of the instrument of judgment, meantime it is a great improvement on the method of judgment also. It overcomes the difficulty of counting circles in Medium-Long distance competition which has not been solved for many years.