| 摘要 |
<p>PURPOSE:To prevent the malfunction and troubles due to small vibration, short circuits, wire breakdown and the like and to make it possible to ensure reliable monitoring and alarming by providing a shock sensor parts having normally closed switch sensors and a monitoring part including circuits for detecting short circuits and wire breakdown. CONSTITUTION:This apparatus is composed of the following parts: a shock sensor part SS wherein normally closed switch sensors S1...Sx which are instantaneously opened by specified shocking force are connected in series; an external pulse removing circuit P1; a short-circuit detecting circuit S which detects the short circuit on the input side and makes a switching circuit MD to be in a conducting state; a wire-breakdown detecting circuit C which detects the wire breakdown on the input side and the opening of the contact points of any of the switch sensors S1...Sx and makes the circuit MD to be in the conducting state; and a monitoring part RT including an inner-pulse removing circuit P2. In this constitution, the shocks of external forces, wire breakdown and short circuits can be detected and alarm positively. The deterioration in functions due to the length of wiring and the effects due to erroneous operation, small vibrations, wind and the like can be prevented.</p> |
