JP5082469B2 - Elevator automatic inspection system - Google Patents

Elevator automatic inspection system Download PDF

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JP5082469B2
JP5082469B2 JP2007019100A JP2007019100A JP5082469B2 JP 5082469 B2 JP5082469 B2 JP 5082469B2 JP 2007019100 A JP2007019100 A JP 2007019100A JP 2007019100 A JP2007019100 A JP 2007019100A JP 5082469 B2 JP5082469 B2 JP 5082469B2
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elevator
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JP2008184274A (en
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洋行 陸野
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Fujitec Co Ltd
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Description

本発明は、エレベータの自動点検システムに関し、特に地震発生後にエレベータを最寄階等に停止させて一旦運転休止とし、その後の自動点検運転により安全が確認されると平常運転（平常時と同様の運転だけでなく、運転速度を下げるなど機能を通常より制限した運転を含む）に仮復旧させるなどの、自動点検・自動復旧機能を有するものにおいて、エレベータの保守管理会社が変更になった場合の安全対策に関するものである。   The present invention relates to an elevator automatic inspection system, and in particular, after an earthquake occurs, the elevator is stopped at the nearest floor, etc. to temporarily stop the operation, and when safety is confirmed by the subsequent automatic inspection operation, normal operation (same as normal operation) If the elevator maintenance management company is changed in the case where it has an automatic inspection / automatic recovery function, such as temporarily reducing to not only the operation but also the operation whose function is restricted than usual, such as reducing the operation speed, etc. It relates to safety measures.

従来から、エレベータには地震時における安全対策として地震管制装置が設けられている。この地震管制装置は、一般に地震感知器を備えており、一定レベル以上の揺れを感知するとエレベータを最寄階等に停止させ、或いは一旦停止の後、最寄階へ低速運転で移動させた後運転を休止する。その後、専門の保守員等により復旧のための点検作業が行なわれ、安全が確認されると平常運転に復旧させ運転が再開される。   Conventionally, an elevator has been provided with an earthquake control device as a safety measure in the event of an earthquake. This seismic control device is generally equipped with a seismic detector, and after detecting a certain level of vibration, the elevator stops at the nearest floor, etc., or after being stopped, it is moved to the nearest floor at low speed. Stop driving. After that, inspection work for restoration is performed by specialized maintenance personnel, and when safety is confirmed, normal operation is restored and operation is resumed.

しかしながら、都市部やその近くで大きな地震が発生すると膨大な数のエレベータが運転休止に至るため、上記のように専門の保守員による点検の後に復旧させる方法では非常に多くの保守員と作業時間とを要し、保守員の手の回らない現場では長時間に亘ってエレベータが停止したままとなる。このため、地震後の復旧運転をより早く行うため、保守員による点検ではなく、点検から復旧までを自動的に行うことが提案されている。   However, if a large earthquake occurs in or near an urban area, a huge number of elevators will be shut down, so the method of restoring after inspection by a specialized maintenance person as described above requires a very large number of maintenance personnel and work hours. Therefore, the elevator remains stopped for a long time at the site where the maintenance staff does not turn. For this reason, in order to perform recovery operation after an earthquake more quickly, it is proposed to automatically perform from inspection to recovery, not inspection by maintenance personnel.

例えば、エレベータを最寄階に停止させた後、揺れが収まったか或いは一定時間経過後に、無人のエレベータを最上階から最下階まで通常の速度よりも低速で往復走行させるなど、所定の運転パターンによる自動点検運転（試験運転）を行い、その間に各種の異常検出器により異常が検出されなければ安全と判断し、自動的に平常運転に仮復旧させるというものである（特許文献１参照）。
特開昭５９−３９６７４号公報 For example, after stopping the elevator at the nearest floor, after a certain amount of time has passed, or after a certain period of time, an unmanned elevator is reciprocated at a lower speed than the normal speed from the top floor to the bottom floor. An automatic check operation (test operation) is performed, and if no abnormality is detected by various abnormality detectors during that time, it is judged safe and automatically restored to normal operation (see Patent Document 1).
JP 59-39674 A

上記特許文献１に示されるような、地震発生後に早期自動復旧を可能とする機能は近年とみに要求が高まっており、保守契約に含まれるサービスの一環として、エレベータ各社はこうした機能をエレベータの制御装置に組込むようになってきている。   In recent years, there has been a growing demand for a function that enables early automatic recovery after an earthquake, as shown in Patent Document 1, and as a part of the service included in the maintenance contract, each elevator company provides such a function as an elevator control device. It has come to be incorporated into.

一方、エレベータの保守は、一般的にビルの所有者・管理者が保守管理業者と１年毎の保守契約を締結するのが基本である。この保守管理業者としては、エレベータメーカ自身やエレベータメーカ系列の保守管理会社だけでなく、独立系の保守管理会社が存在しており、特に最近は管理費削減の観点から、ビルの所有者・管理者は、エレベータの設置から一定期間経過後に、メーカ系列の保守管理会社から独立系の保守管理会社に保守の契約先を変更したり、或いは最初から独立系の保守管理会社を選択するケースが増えている。   On the other hand, the maintenance of elevators is generally based on a building owner / manager who concludes an annual maintenance contract with a maintenance manager. As this maintenance management company, there are not only elevator manufacturers themselves and maintenance management companies affiliated with elevator manufacturers, but also independent maintenance management companies. Recently, from the viewpoint of reducing management costs, owners and management of buildings Increasingly, after a certain period of time has passed since the installation of the elevator, the maintenance contractor from the manufacturer's affiliated company to an independent maintenance management company has changed, or an independent maintenance management company has been selected from the beginning. ing.

こうした場合、独立系の保守管理会社はメーカ系列の保守管理会社とは異なる独自の基準によって保守作業や部品の交換等を行うため、元の自動点検機能や自動復旧機能をそのまま利用すると正常に機能しないおそれが生じる。このため、保守管理会社が途中で変更になった場合や当初から独立系の保守管理会社が保守を行うことになった場合、以後の安全性を保証するためには元の自動点検機能や自動復旧機能を取り除く必要がある。   In this case, the independent maintenance management company performs maintenance work and replacement of parts according to its own standards different from those of manufacturer-related maintenance management companies. Therefore, if the original automatic inspection function and automatic recovery function are used as they are, they will function normally. There is a risk that it will not. For this reason, if the maintenance management company changes in the middle or if an independent maintenance management company performs maintenance from the beginning, the original automatic inspection function or automatic It is necessary to remove the recovery function.

しかしながら、上記の自動点検／自動復旧機能は個々のエレベータに設定される機能であり、またエレベータの所有権はビルの所有者にあるため、保守管理会社が途中で変更になったからといって、即時に上記機能を除去するなどの改造を行うことは現実的に困難である。   However, the automatic inspection / recovery function described above is a function set for each elevator, and the ownership of the elevator belongs to the owner of the building. It is practically difficult to make modifications such as removing the above functions immediately.

本発明は、上記の問題点に鑑みなされたもので、エレベータの設置後に保守契約先が独立系の保守管理会社に変更になったとしても、自動点検や自動復旧の機能を現場で作業することなく簡単に無効化することができ、エレベータメーカとは直接関係の無い第三者による保守管理の中で、元の自動点検や自動復旧の機能が利用される危険性を防止することを目的としたものである。   The present invention has been made in view of the above-described problems, and even if the maintenance contractor is changed to an independent maintenance management company after installing the elevator, the automatic inspection and automatic recovery functions can be operated on site. The purpose is to prevent the risk that the original automatic inspection and automatic recovery functions will be used in maintenance management by a third party who is not directly related to the elevator manufacturer. It is a thing.

本発明は、地震発生後の自動点検及び自動復旧機能を備えたエレベータと、保守対象の複数のエレベータと通信接続され、各エレベータの保守や監視を行う監視センターとからなるエレベータの自動点検システムにおいて、監視センター側には、一定期間毎に保守契約の有無を識別するための保守契約信号を各エレベータに送信する手段を備え、前記保守契約信号を各エレベータに送信する手段は保守契約有りのエレベータに保守契約信号を送信し、各エレベータ側には、前記保守契約信号を受信する手段と、前記保守契約信号を受信した場合は有効、前記保守契約信号を受信していない場合は前回の更新時から一定期間経過していれば無効として記憶する保守契約の有無を更新記憶する手段と、保守契約の有無に応じて自動点検運転の可否を判定する手段とを備え、地震発生後に前記自動点検運転の可否を判定する手段は、前記保守契約の有無を更新記憶する手段の記憶が有効であれば自動点検運転を開始し、無効であれば運転休止にすることを特徴とするエレベータの自動点検システムである。 The present invention relates to an elevator automatic inspection system comprising an elevator having an automatic inspection and automatic recovery function after an earthquake and a monitoring center which is connected to a plurality of elevators to be maintained and performs maintenance and monitoring of each elevator. The monitoring center includes means for transmitting a maintenance contract signal for identifying whether there is a maintenance contract at regular intervals to each elevator, and means for transmitting the maintenance contract signal to each elevator is an elevator with a maintenance contract. A maintenance contract signal is transmitted to each elevator, and each elevator side receives the maintenance contract signal and is valid when the maintenance contract signal is received. Means to update and store the existence of a maintenance contract that is stored as invalid if a certain period of time has passed, and whether automatic inspection operation is possible depending on the presence or absence of a maintenance contract A means for determining whether or not the automatic inspection operation can be performed after the occurrence of an earthquake. The automatic inspection operation is started if the storage of the means for updating and storing the presence or absence of the maintenance contract is valid. It is an elevator automatic inspection system characterized by stopping operation .

本発明によれば、自動点検・自動復旧機能の設計や製作を行ったエレベータメーカとは直接関係のない第三者が、最初から或いは途中からそのエレベータの保守契約を請け負うこととなった場合には、少なくともその保守契約から一定期間経過後は、元の自動点検運転機能によっては、自動点検運転や自動復旧が行われないこととなり、設計や製作元とは直接関係のない第三者の保守管理下で元の自動点検運転や自動復旧が行われる危険性を防止することができる。   According to the present invention, when a third party who is not directly related to the elevator maker who designed or manufactured the automatic inspection / automatic recovery function starts contracting the maintenance of the elevator from the beginning or midway. At least after a certain period of time has passed since the maintenance contract, the original automatic inspection operation function will prevent automatic inspection operation and automatic recovery from being performed, and maintenance by a third party not directly related to the design or manufacturer It is possible to prevent the risk of the original automatic inspection operation and automatic recovery being performed under management.

以下、本発明の一実施形態を図面に基づいて説明する。図１は本発明の一実施形態であるエレベータの自動点検システムの全体構成図、図２は本発明に係るエレベータの自動点検運転の動作手順を示すフローチャート、図３は監視センターにおける保守契約信号の送信手順を示すフローチャート、図４はエレベータの制御装置における保守契約信号の更新手順を示すフローチャートである。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an elevator automatic inspection system according to an embodiment of the present invention, FIG. 2 is a flowchart showing an operation procedure of an elevator automatic inspection operation according to the present invention, and FIG. 3 is a maintenance contract signal at a monitoring center. FIG. 4 is a flowchart showing a maintenance contract signal update procedure in the elevator control apparatus.

図１において、１０はエレベータ制御装置、１１はエレベータから監視センター３０へデータや信号を送信し或いは受信するための送受信機、１２は所定レベル以上の揺れを検出する地震感知器、１３は地震感知器１２が作動するとエレベータを最寄階に停止させるなどの地震管制運転指令を発生する地震管制運転指令手段、１４は保守契約信号の有無に基づき自動点検運転の可否を判定する自動点検運転可否判定手段、１５は地震管制運転終了後に、前記自動点検運転可否判定手段１４の結果に基づき、所定の運転パターン（無人のエレベータを最上階から最下階まで通常の速度よりも低速で往復走行させるなど）による自動点検運転指令を出力する自動点検運転指令手段、１６は地震管制運転指令や自動点検運転指令に応じてエレベータの運行を制御する運行制御装置，１７監視センターから送信される保守契約信号を更新し記憶する保守契約信号更新・記憶手段である。   In FIG. 1, 10 is an elevator control device, 11 is a transmitter / receiver for transmitting or receiving data and signals from the elevator to the monitoring center 30, 12 is a seismic sensor for detecting a vibration of a predetermined level or more, and 13 is a seismic sensor. Seismic control operation command means for generating a seismic control operation command such as stopping the elevator to the nearest floor when the unit 12 is operated, and 14 is an automatic inspection operation determination for determining whether automatic inspection operation is possible based on the presence or absence of a maintenance contract signal Means 15 is a predetermined operation pattern (such as reciprocating an unmanned elevator from the top floor to the bottom floor at a lower speed than the normal speed based on the result of the automatic inspection operation availability determination means 14 after the end of the seismic control operation. The automatic inspection operation command means for outputting the automatic inspection operation command in accordance with (), 16 is an elevator according to the seismic control operation command or the automatic inspection operation command Operation control device for controlling the operation, a maintenance contract signal updating and storing means for updating stored maintenance contract signal transmitted from 17 monitoring center.

２０は一般公衆回線、３０は一般公衆回線を介して多数のエレベータやエスカレータを一括監視し、必要に応じて遠隔保守等を行う監視センター、３１はエレベータからの信号やデータを受信し或いはエレベータへの信号やデータを送信する送受信機、３２は監視センター３０が保守対象としているエレベータの保守契約信号やその他保守点検に必要な種々のデータを格納するためのデータベース、３３は自動点検機能を含む保守契約の有無の情報を定期的に該当エレベータに送信する保守契約信号送信手段である。   20 is a general public line, 30 is a monitoring center that collectively monitors a large number of elevators and escalators via the general public line, and performs remote maintenance etc. if necessary, 31 receives signals and data from the elevator or goes to the elevator Transmitter / receiver for transmitting the signals and data of 32, 32 is a database for storing the maintenance contract signal of the elevator that is to be maintained by the monitoring center 30 and other various data necessary for maintenance inspection, 33 is a maintenance including an automatic inspection function This is a maintenance contract signal transmission means for periodically transmitting information on the presence or absence of a contract to the corresponding elevator.

以下、上記図１の構成と図２乃至図４のフローチャートに基づいて、本発明に係るエレベータの自動点検運転の手順を説明する。   Hereinafter, the procedure of the automatic inspection operation of the elevator according to the present invention will be described based on the configuration of FIG. 1 and the flowcharts of FIGS.

まず、地震感知器で所定のレベル以上の揺れを検出すると地震感知器１２が作動し、地震管制運転指令手段１３から運行制御装置１６へ地震管制運転指令が発せられて地震管制運転が開始される（ステップＳ１）。このときエレベータが走行中であれば、かごは最寄階へ停止させ、ドアを開いて乗客を降ろした後にドアを閉じ運転を休止する。地震感知器の作動時にもしもかごが停止中であった場合には、上記と同様にドアを開いて乗客をかごから脱出させた後、ドアを閉じ運転を休止する。   First, when a seismic detector detects a shake of a predetermined level or more, the earthquake detector 12 is activated, and an earthquake control operation command is issued from the earthquake control operation command means 13 to the operation control device 16 to start the earthquake control operation. (Step S1). If the elevator is running at this time, the car is stopped to the nearest floor, the door is opened and the passenger is lowered, and then the door is closed and the operation is stopped. If the car is stopped when the seismic sensor is activated, the door is opened and passengers are escaped from the car in the same manner as described above, and then the door is closed to stop the operation.

そして地震管制運転終了後（ステップＳ２）、一定時間経過するなど所定条件が整うと、自動点検運転可否判定手段１４で保守契約信号更新・記憶手段１７に保持されている保守契約信号の有無を確認し、自動点検運転の可否を判定する（ステップＳ３）。その結果、保守契約信号が無効であれば運転を休止し（ステップＳ８）、自動点検運転は阻止されるが、保守契約信号が有効であれば、自動点検運転指令手段１５から運行制御装置１６へ自動点検運転指令が発せられ、所定の運転パターンによる自動点検運転が開始される（ステップＳ４）。この自動点検運転はかご内が無人の状態で行われ、例えば低速で最上階から最下階まで一往復運転を行い、異常が検出されなければ、次に高速運転で同様に一往復運転を行うなど種々の実施例が考えられる。そして自動点検運転中に何らかの異常が検出されるとその時点でその後の運転を休止する（ステップＳ５、ステップＳ８）。   After the seismic control operation is completed (step S2), when a predetermined condition such as elapse of a certain period of time is established, the automatic inspection operation availability determination means 14 confirms whether there is a maintenance contract signal held in the maintenance contract signal update / storage means 17 Then, it is determined whether automatic inspection operation is possible (step S3). As a result, if the maintenance contract signal is invalid, the operation is stopped (step S8), and the automatic inspection operation is blocked, but if the maintenance contract signal is valid, the automatic inspection operation command means 15 transfers to the operation control device 16. An automatic inspection operation command is issued, and automatic inspection operation with a predetermined operation pattern is started (step S4). This automatic inspection operation is performed in an unattended state in the car. For example, one reciprocal operation is performed from the top floor to the bottom floor at a low speed, and if no abnormality is detected, one reciprocal operation is similarly performed at a high speed operation. Various embodiments are conceivable. If any abnormality is detected during the automatic inspection operation, the subsequent operation is stopped at that time (steps S5 and S8).

一方、自動点検運転中に異常が検出されなかった場合は、所定の自動点検運転を完了して（ステップＳ６）、その後は仮復旧運転に移行し（ステップＳ７）、専門の保守員による点検が終了するまで平常時と同様の仮復旧運転が行われる。   On the other hand, if no abnormality is detected during the automatic inspection operation, the predetermined automatic inspection operation is completed (step S6), and then the temporary recovery operation is performed (step S7). The temporary restoration operation similar to the normal operation is performed until the end.

図３は、監視センターにおける保守契約信号の送信手順を示すフローチャートである。   FIG. 3 is a flowchart showing a procedure for transmitting a maintenance contract signal in the monitoring center.

まず、データベース３２に予め或いは保守契約の変更時に書き込まれた保守契約の有無の情報を確認し（ステップＳ１１）、契約有りのエレベータに対して、送受信器３１と一般公衆回線２０とを介し保守契約信号を送信する（ステップＳ１２）。更に一定期間（例えば一週間）を経過したか否かを確認し（ステップＳ１３）、一定期間を経過するとステップＳ１１へと戻り、上記の手順を繰り返す。このようにすることで、保守契約有りのエレベータに対しては、監視センター３０から定期的に保守契約の有無を識別するための保守契約信号が送信されることになる。   First, information on the presence / absence of a maintenance contract written in advance in the database 32 or when the maintenance contract is changed is confirmed (step S11), and the maintenance contract is confirmed via the transceiver 31 and the general public line 20 for the elevator with the contract. A signal is transmitted (step S12). Further, it is confirmed whether or not a certain period (for example, one week) has elapsed (step S13). When the certain period has elapsed, the process returns to step S11 and the above procedure is repeated. By doing in this way, the maintenance contract signal for identifying the presence or absence of the maintenance contract is periodically transmitted from the monitoring center 30 to the elevator with the maintenance contract.

図４は、エレベータの制御装置における保守契約信号の更新手順を示すフローチャートである。
まず、送受信器１１を介して保守契約信号を受信したか否かを判断し（ステップＳ２１）、受信した場合は保守契約信号を「有効」に設定して更新記憶する（ステップＳ２２）。ステップＳ２１で保守契約信号を受信していない場合は、前回の更新時から一定期間（例えば一ヶ月）経過したか否かを確認し（ステップＳ２３）、一定期間経過していれば契約信号を「無効」に設定して更新記憶する（ステップＳ２４）。 FIG. 4 is a flowchart showing a procedure for updating a maintenance contract signal in the elevator control apparatus.
First, it is determined whether or not a maintenance contract signal has been received via the transceiver 11 (step S21), and if received, the maintenance contract signal is set to “valid” and updated (step S22). If the maintenance contract signal has not been received in step S21, it is confirmed whether or not a certain period (for example, one month) has elapsed since the previous update (step S23). It is set to “invalid” and updated and stored (step S24).

以後、上記手順を繰り返すことで、監視センター送信されてくるデータが「保守契約有り」の場合は、直ちに「有効」に設定され、「保守契約無し」の場合は、前回の更新時から一定期間経過後に「無効」に設定されて更新記憶される。   After that, by repeating the above procedure, if the data sent to the monitoring center is “Maintenance contract”, it is immediately set to “Valid”, and if it is “No maintenance contract”, it will be set for a certain period from the previous update. After the elapse, it is set to “invalid” and updated and stored.

このように、「保守契約無し」の場合には、一定期間経過後に「無効」に設定されるようにすることで、保守管理会社が変更になった後もしばらくの間は、上記の機能を有効にしておき、その間に新しく契約先となった保守管理会社が独自の保守体制に切替えることができる。そして一定期間経過後は、元の自動点検・自動復旧機能は無効となり、第三者が元の自動点検・自動復旧機能を利用する危険性が回避されることになる。   In this way, in the case of “no maintenance contract”, the above function is set for a while after the maintenance management company is changed by setting it to “invalid” after a certain period of time. In the meantime, the maintenance company that became the new contractor can switch to its own maintenance system. Then, after a certain period of time, the original automatic inspection / automatic recovery function becomes invalid, and the risk of a third party using the original automatic inspection / automatic recovery function is avoided.

なお上記の実施形態においては、保守契約信号を保守契約有りのエレベータにだけ送信しているが、保守契約の有無を区別してすべてのエレベータに保守契約信号を送信するようにしてもよい。   In the above embodiment, the maintenance contract signal is transmitted only to the elevator with the maintenance contract. However, the maintenance contract signal may be transmitted to all the elevators by distinguishing the presence or absence of the maintenance contract.

また、上記の実施形態においては、自動点検運転と自動復旧機能について説明したが、これに限らず、かご内閉じ込め時の遠隔救出運転等についても、同様に適用することができる。   Moreover, in said embodiment, although the automatic inspection driving | operation and the automatic recovery function were demonstrated, it is applicable not only to this but the remote rescue driving | running | working at the time of confinement in a cage, etc. similarly.

その他、本発明は上記の実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で、種々の改変を施すことができる。   In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

本発明の一実施形態であるエレベータの自動点検システムの全体構成図である。1 is an overall configuration diagram of an elevator automatic inspection system according to an embodiment of the present invention. 本発明に係るエレベータの自動点検運転の動作手順を示すフローチャートである。It is a flowchart which shows the operation | movement procedure of the automatic inspection driving | operation of the elevator which concerns on this invention. 監視センターにおける保守契約信号の送信手順を示すフローチャートである。It is a flowchart which shows the transmission procedure of the maintenance contract signal in a monitoring center. エレベータの制御装置における保守契約信号の更新手順を示すフローチャートである。It is a flowchart which shows the update procedure of the maintenance contract signal in the control apparatus of an elevator.

符号の説明Explanation of symbols

１０ エレベータ制御装置
１１，４１ 送受信機
１２ 地震感知器
１３ 地震管制運転指令手段
１４ 自動点検運転可否判定手段
１５ 自動点検運転指令手段
１６ 運行制御装置
１７ 保守契約信号記憶・更新手段
２０ 一般公衆回線
３０ 監視センター
４２ データベース
４３ 保守契約信号送信手段 DESCRIPTION OF SYMBOLS 10 Elevator control apparatus 11,41 Transceiver 12 Seismic detector 13 Seismic control operation command means 14 Automatic check operation availability determination means 15 Automatic check operation command means 16 Operation control device 17 Maintenance contract signal storage / update means 20 General public line 30 Monitoring Center 42 Database 43 Maintenance contract signal transmission means

Claims (1)

地震発生後の自動点検及び自動復旧機能を備えたエレベータと、保守対象の複数のエレベータと通信接続され、各エレベータの保守や監視を行う監視センターとからなるエレベータの自動点検システムにおいて、
監視センター側には、一定期間毎に保守契約の有無を識別するための保守契約信号を各エレベータに送信する手段を備え、前記保守契約信号を各エレベータに送信する手段は保守契約有りのエレベータに保守契約信号を送信し、各エレベータ側には、前記保守契約信号を受信する手段と、前記保守契約信号を受信した場合は有効、前記保守契約信号を受信していない場合は前回の更新時から一定期間経過していれば無効として記憶する保守契約の有無を更新記憶する手段と、保守契約の有無に応じて自動点検運転の可否を判定する手段とを備え、地震発生後に前記自動点検運転の可否を判定する手段は、前記保守契約の有無を更新記憶する手段の記憶が有効であれば自動点検運転を開始し、無効であれば運転休止にすることを特徴とするエレベータの自動点検システム。 In an elevator automatic inspection system consisting of an elevator equipped with an automatic inspection and automatic recovery function after an earthquake and a monitoring center that is connected to a plurality of elevators to be maintained and performs maintenance and monitoring of each elevator,
The monitoring center side is provided with means for transmitting a maintenance contract signal for identifying whether there is a maintenance contract at regular intervals to each elevator, and the means for transmitting the maintenance contract signal to each elevator is provided to an elevator with a maintenance contract. A maintenance contract signal is transmitted, and each elevator side receives the maintenance contract signal, and when the maintenance contract signal is received, it is valid. When the maintenance contract signal is not received, it is from the previous update. Means for updating and storing the presence or absence of a maintenance contract stored as invalid if a certain period of time has elapsed, and means for determining whether or not an automatic inspection operation is possible according to the presence or absence of a maintenance contract , means for determining whether the Jer characterized in that the storage means of updating and storing the presence or absence of the maintenance contract starts automatic inspection operation if valid, to shutdown if invalid Automatic inspection system of over data.
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