摘要
给出一种实时互锁式无线抢答手柄的设计应用实例,使无线抢答器的死区时间由通常的40 ms锐减为40μs。其基本思路是:在每只抢答手柄中增加一片射频接收模块和一个电子开关、配以相应的附属电路,使该电子开关受控于接收模块输出信号的有无,并决定手柄中的射频发射模块是否通电工作,从而实现各抢答手柄之间的实时互锁。只有首先被按下抢答按键的手柄,才有可能向外发送编码射频。持有该手柄的选手即为抢答成功者。
Abstract： A real-time interlock type of wireless responder handle design application examples. The dead time by 40 ms drop to 40μs. The basic idea is： in each of the handle add a RF receive module, an electronic switch, the corresponding accessory circuit. The receiving module of the output signal control electronic switch. The electronic switch control RF launch module work or not. So the handle real-time interlocking. Only the first vies to answer first person, can launch waves, and become vies to answer first winners.
出处
《电子设计工程》
2012年第13期76-78,共3页
Electronic Design Engineering
关键词
实时多路互锁
循环扫描多路互锁
死区时间
抢答器
抢答手柄
real-time signals interlock
circulation scanning signals interlock
dead zone time
vies
responder handle
