发明授权
US4158195A Pulse transmission-reception system 失效
脉冲发射接收系统

Pulse transmission-reception system
摘要:
A system wherein a train of a predetermined number of electrical pulses are generated whenever a predetermined quantity of electricity, gas or water is consumed. The pulses are transmitted to a remotely located data station or the like for remotely measuring the consumed quantity. The received pulse train is processed at a receiving site or the data station so as to derive a single pulse which in turn is counted by a counter.
公开/授权文献
信息查询
0/0