| 摘要 |
PURPOSE:To call passenger's attention to his mischief for restraining him surely from his mischief by providing a means for detecting the mischief such as rolling eaused by the passenger in a cage of an elevator while turning off the illumination in the cage at the detection of the mischief. CONSTITUTION:When a passenger does mischief to a cage to roll it during running of an elevator, the number of pulses from a rotary encoder interlocked with the cage is varied, so that a calculating controller detects and judges the mischief, closes a contact I and excites a relay K. Thus, the relay K holds itself by respective contacts M, Ka while illumination L is turned off by opening a contact Kb. When the cage thereafter reaches the closest story and stops, the contact M is opened to demagnetize the relay K, close a contact Kb and turn on the illumination L. Thus, the cage is temporarily kept dark to call the passenger's attention to his mischief for restraining surely him from miscief. |
