| 摘要 |
<p>The movement controlled infra-red proximity switch has a circuit development protecting it against noise pulses whilst not affecting functional ability. A coincidence circuit only permits signal processing to proceed when the infra-red signal is received at the same time as a signal generated within the receiver. An anti-coincidence circuit suppresses processing for a fixed time interval following the occurrence of a spurious received pulse without the internally generated pulse.</p> |
