公开(公告)号：EP0003412A3

公开(公告)日：1979-09-05

申请号：EP79300087

申请日：1979-01-18

申请人： IMPERIAL CHEMICAL INDUSTRIES PLC

发明人： Kirby, Ian John ,  Mitchell, Michael Ian ,  Stratton, Andrew

IPC分类号： F42C01/06 ,  G01V01/08 ,  H03K05/13 ,  H03K05/15 ,  G04C23/46

CPC分类号： H03K5/131 ,  F42B3/122 ,  F42D1/055 ,  G01V1/08 ,  G04F1/005

摘要： Separate electrical timing and load activation devices are provided for each of plural electrical loads and each device is in use connected to receive reference timing signals from a remote central unit. Each of the separate timing and toad activation devices measures a reference time interval accurately defined by the reference timing signals and subsequently activates its associated electrical load after a respectively corresponding predetermined time delay which is determined as a function of the locally measured reference time interval. The time interval may advantageously be measured by counting locally generated clock pulses, for example, in an up-down counter which after counting the pulses between two reference timing signals reverses direction and activates the load when the count reaches the initial value. The devices are especially useful for firing electric fuseheads for blasting detonators in a predetermined delay sequence.

摘要翻译： 为多个电负载中的每一个提供单独的电定时和负载激活装置，并且每个装置被连接以从中央单元接收参考定时信号。 单独的定时和负载激活装置中的每一个测量由参考定时信号精确定义的参考时间间隔，并随后在根据本地测量的基准时间间隔确定的相应的预定时间延迟之后激活其相关联的电负载。