REMOTE MONITORING SYSTEM FOR ELEVATOR

PROBLEM TO BE SOLVED: To provide a remote monitoring system for an elevator which can minimize a non-usable time of an antenna by notifying a monitoring center of its situation even if a radio wave cannot reach due to the lowering of the radio field intensity of the radio communication antenna by a change of an ambient environment.SOLUTION: In this system, in a remote monitoring device 4 which measures a situation by a radio field intensity measurement function 44 even if the radio field intensity of an antenna 51 which is connected to a radio communication device 5 in a hoistway 1 is lowered due to a change of an ambient environment, a radio field intensity determination function 47 determines a floor at which the radio field intensity of an antenna 52 from a radio field intensity storage function 46 becomes maximum when an antenna selection function 43 notifies a monitoring center 8 of an abnormality of the antenna 51 by a monitoring center notification function 42 after the antenna selection function is switch-connected to the antenna 52 which is arranged at a car 2 with respect to the device 5, a hoist control function 48 transmits the floor at which the radio field intensity becomes maximum as a stop floor after moving the car 2, and thus, notification can be suitably performed.SELECTED DRAWING: Figure 1 【課題】周囲環境の変化により無線通信用のアンテナの電波強度が低下して電波が到達できなくなってもその状況を監視センタへ通報してアンテナの使用不能時間を最小限にし得るエレベーター用遠隔監視システムを提供する。【解決手段】このシステムでは、昇降路１内で無線通信装置５に接続されて設置されるアンテナ５１の電波強度が周囲環境の変化により低下して通信圏外となっても、その状況を電波強度測定機能４４で測定した遠隔監視装置４において、アンテナ選択機能４３が装置５に対して乗りかご２に設けたアンテナ５２に切換え接続してからアンテナ５１の異常を監視センタ通報機能４２により監視センタ８へ通報する際、電波強度判定機能４７が電波強度記憶機能４６からアンテナ５２の電波強度の最大となる階床を判別し、昇降機制御機能４８がその電波強度最大階床を停止階としてかご２を移動させてから送信を行うため、適確に通報を行うことができる。【選択図】図１