EP0847954A1 - Betriebsüberwachungssystem für mindestens einen Aufzug - Google Patents

Betriebsüberwachungssystem für mindestens einen Aufzug Download PDF

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Publication number
EP0847954A1
EP0847954A1 EP97402904A EP97402904A EP0847954A1 EP 0847954 A1 EP0847954 A1 EP 0847954A1 EP 97402904 A EP97402904 A EP 97402904A EP 97402904 A EP97402904 A EP 97402904A EP 0847954 A1 EP0847954 A1 EP 0847954A1
Authority
EP
European Patent Office
Prior art keywords
cabin
processing unit
elevator
unit
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97402904A
Other languages
English (en)
French (fr)
Inventor
François Guillet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Elevator Manufacturing France SAS
Original Assignee
Thyssen Ascenseurs SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssen Ascenseurs SAS filed Critical Thyssen Ascenseurs SAS
Publication of EP0847954A1 publication Critical patent/EP0847954A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers

Definitions

  • the present invention relates to a system monitoring the operation of at least one elevator.
  • An elevator conventionally comprises a cabin movable mounted in a sheath under the action of means motors controlled by operating control means from the cabin.
  • the control means are generally constituted by an electrical, electronic or programmable system, controlling the lifting motors of the cabin and landing door displacement motors from orders given by a user and variables condition of the booth, such as its position in the sheath elevator.
  • Conventional surveillance systems operation of such an elevator include means for measuring characteristics representative of operation of this elevator and a processing unit signals from the measuring means for the purpose of detection of a malfunction of this elevator.
  • the measuring means carry out a measurement of electrical signals. presented as input control means and delivered to the motors and to the cabin.
  • This type of system allows effective detection of a malfunction and in this case issue a alarm at a central monitoring station.
  • the object of the invention is to overcome these drawbacks.
  • measuring means include means for detecting the position of the cabin separated from the control means
  • processing unit includes means for compare the actual position of the cabin resulting from the action of the driving means and a threshold value corresponding to a position controlled by the means of ordered.
  • FIG. 1 a block diagram of the monitoring system according to the invention.
  • Each elevator is consisting in a known manner of a movable mounted cabin 10 in an elevator shaft (not shown), under the action of a conventional elevator machine 12 and comprising a lifting motor 14 and a box of control 16 comprising suitable programmable means to control the operation of the cabin.
  • the 16 pilot control unit the operation of the lifting motor 14 and of the motors actuating the doors (not shown) of the cabin 10 and, if necessary, landing doors.
  • the surveillance system includes a set means for measuring representative characteristics of the elevator operation, connected to a unit 18 for processing signals from the measurement means for allow the detection of an elevator malfunction and in which are stored algorithms appropriate signal processing and calculation.
  • the measuring means comprise a set of sensors for detecting the effects generated on the cabin 10 in the presence of a malfunction.
  • This set of sensors includes a sensor 22 measuring the position of the cabin 10 in the sheath, a sensor 24 for measuring the position of the doors of the cabin and if necessary landing doors, and a 26 photosensitive sensor for detecting the lighting state from the cabin.
  • the unit of processing 18, sensors 22 and 24 for measuring cab and door positions are positioned on the roof 28 of the cabin, the photosensitive sensor 26 being positioned inside the interior volume 30 defined by cabin 10.
  • the detection sensor 22 of the cabin position is constituted by a 22-a photocell cooperating with a strip notched 22-b.
  • suitable sensors for the intended use including an accelerometer, a telemetry system, or similar.
  • the sensor 24 for measuring the position of the doors can also consist of any type of sensor known, in particular a proximity detector, capacitive or inductive, or a simple contact sensor delivering binary information corresponding to positions open or closed doors.
  • the signal processing unit 18 receives at input signals from position sensors 22,24 and by the photosensitive sensor 26. It receives also input signals from a microphone 34 and a button 36 for controlling alarm means manually operable by a user.
  • processing unit 18 is connected, at the output, to the control box 16 of the machinery 12 and, inside the cabin, to a loudspeaker 38, to members for controlling the movement of cabin 10, uphill 40 and downhill 42, and at a warning light 44.
  • the processing unit 18 is further connected, by via a bidirectional transmission bus 46 digital data to a terminal 48 placed in the cabin 10, for the connection of a terminal 50 of a maintenance operator, consisting for example of a microcomputer, allowing the interrogation of means of measurement and configuration of the system.
  • a input / output card 52 for data acquisition from operation of machinery 12, such as temperature engine oil 14 or information related to the general condition of the machinery or relating to particular operations of the elevator, in particular its decommissioning, or its operation under the control firefighters, as well as a connection interface 54 a microcomputer for setting the system in view of the acquisition of its operating data.
  • the processing unit 18 communicates bidirectionally, through a telecommunication box 56 and by means of a telephone line 58 and a corresponding interface 59 with the central unit 20 monitoring for transmitting data signals of elevator operation and alarm signals.
  • this unit of surveillance 20 consists of two surveillance stations 60 and 62, constituted respectively by the post of monitoring of a maintenance company, which includes a microcomputer 64 and a telephone set 66, and through the owner’s monitoring post the customer elevator of this maintenance company, which station is equipped with a microcomputer 68.
  • processing unit 18 and the unit central 20 are provided with transmission means and reception of conventional data allowing transmission and the acquisition of signals useful for operation of the system.
  • the signal processing unit 18 receives at permanently and in real time the measurement signals supplied by sensors 22, 24 and 26 and compares, using algorithms stored in a memory, these values of measure, corresponding to real characteristics of operation, with stored and corresponding values respectively at positions of the elevator car in the sheath, at positions of the doors of the cabin and in an illuminated state, in configurations specific operating conditions, in the absence of elevator malfunction.
  • this action causes the programming, by the control box 16, of the movement from the cabin to this floor, from the opening of cabin doors and interior lighting the cabin, in the case of lighting controlled by the user presence.
  • the box of command 16 sends corresponding orders to motor 14 and to the cabin lighting means in the case of lighting controlled by the presence of a user.
  • the processing unit 18 calculates, using a algorithm stored in its memory, the comparison between the actual position of the cabin resulting from the action of the motor 14 and a threshold value corresponding to a theoretical stop position programmed by the control unit command 16, such as one of the accessible levels, between the actual position of the cabin doors and a value threshold corresponding to the commanded and programmed position by the box 16 thus verifying the arrival at a level and opening the doors and between the actual state cabin lighting detected by sensor 26 and a threshold value corresponding to an illumination state predetermined, i.e. either a state of controlled lighting in response to input from a user, either a state of permanent lighting.
  • an illumination state predetermined i.e. either a state of controlled lighting in response to input from a user, either a state of permanent lighting.
  • the processing unit 18 causes the emission of a signal in the direction of the control keys 40 and 42 of the movement from the cabin, uphill or downhill, or in the direction motor means for controlling the movement of doors to position them in their programmed state, depending on the type of malfunction detected.
  • the processing 18 furthermore transmits a signal towards a reset input of control box 16 for cause a total reset of the elevator, a such reset being likely as is known, in some cases, to cause the disappearance of dysfunction.
  • the unit processing 18 emits, in the direction of the central unit of monitoring 20 an alarm signal to trigger the intervention maintenance teams, and connects, to by means of the telephone link 58, the microphone 34 and the loudspeaker 38 with the telephone set 66 of the monitoring unit 20 to allow communication between a user likely to be blocked in the elevator and a maintenance operator located at monitoring unit level 20.
  • the unit processing ensures, in real time, the comparison between measured values of representative characteristics elevator operation and threshold values corresponding to the value of these characteristics in absence of malfunction.
  • threshold values are stored in a processing unit memory 18 and can either be transferred from terminals 50 and 52 connected to bus 46, or be acquired during a configuration phase of the system, especially during its installation.
  • Such a configuration phase is carried out in causing the elevator car to move up to each level of the sheath and storing the values of the operating characteristics, conveyed by the signals delivered by the sensors 22, 24 and 26 in the absence of a malfunction.
  • the processing 18 checks the operation of the elevator according to the procedure described above before confirming this order, which avoids interventions untimely and unnecessary maintenance teams.
  • monitoring the operation of the elevator takes place only when a user sends an order call or send the cabin to a predetermined floor.
  • the processing unit 18 transmits at times appropriate and according to a determined rate of orders in direction of the control keys 40 and 42 for movement cabin to periodically monitor operation of the elevator when it is not requested by a user.
  • the processing unit 18 comprises software means for setting the threshold values stored in its memory, according to the procedure illustrated in Figure 2.
  • the data of elevator operation i.e. the position of the cabin, doors and cabin lighting status, are acquired by the processing unit 18 and stored, according to the procedure described above.
  • the processing unit 18 assigns a detection threshold value to each of these acquired values.
  • the threshold values are adjusted, namely increased or decreased, if in a later stage it is decided that the number of exceedances of these values is too important, this adjustment step being inactive when no malfunction has been detected.
  • the system monitors, during from steps 76 to 80 following, the gap, as mentioned previously, between the measured values and the values threshold. If, during step 80, the system detects an overshooting of values, it causes (step 82), a memorization of the value of this overshoot and a count the number of overruns detected.
  • step 84 it is carried out a comparison of the number of exceedances of the values threshold with a predetermined number. As mentioned previously, if the difference between a measured value and a corresponding threshold value is low and that the number of exceedances of this threshold value is high, the system changes the threshold value to remove this difference and cause, as described above, an adjustment of the threshold values during step 74.
  • the unit checks during of step 86 if the central processing unit 20 requests that these value overruns are stored in a memory for historical archiving.
  • step 88 the information is stored in a memory stack (step 88), then, if the central unit 20 has sent a transmission control order (step 90), the information of malfunction are transmitted to him, at during step 92.
  • step 94 it is checked that the transmission has been completed. If this is the case, a flag is positioned indicating that the transmission has been completed (step 96). If not case, a flag indicating that the transmission was not performed is positioned during step 98.
  • This procedure for adjusting the detection thresholds of faults allows by successive adjustments of threshold values to avoid untimely intervention maintenance teams, in cases where malfunctions minors are detected.
  • the unit central 20 is connected to a single elevator for the monitoring of its operation.
  • the signals transmitted in the telephone line come in the form of raster signals with a useful signal in which are coded the operating data exchanged between the central unit 20 and the elevator, and a header signal in which the address of the central unit and of the elevator at which the data contained in the signal useful are intended or the elevator having issued the signal transmitted.

Landscapes

  • Indicating And Signalling Devices For Elevators (AREA)
  • Elevator Control (AREA)
EP97402904A 1996-12-13 1997-12-02 Betriebsüberwachungssystem für mindestens einen Aufzug Withdrawn EP0847954A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9615374A FR2757142B1 (fr) 1996-12-13 1996-12-13 Systeme de surveillance du fonctionnement d'au moins un ascenseur
FR9615374 1996-12-13

Publications (1)

Publication Number Publication Date
EP0847954A1 true EP0847954A1 (de) 1998-06-17

Family

ID=9498669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402904A Withdrawn EP0847954A1 (de) 1996-12-13 1997-12-02 Betriebsüberwachungssystem für mindestens einen Aufzug

Country Status (2)

Country Link
EP (1) EP0847954A1 (de)
FR (1) FR2757142B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1164105A3 (de) * 2000-05-09 2003-12-10 Otis Elevator Company, A New Jersey Corporation Wartunssmeldung auf Basis der Fahrparametern eines Aufzugs
US7909144B2 (en) 2005-03-22 2011-03-22 Mitsubishi Denki Kabushiki Kaisha Car oscillation detecting device for elevator using a set value to judge car oscillation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140802A1 (de) * 1983-10-19 1985-05-08 Société dite ASTEC S.A." Vorrichtung zum Unterscheiden von Alarm von Aufzügen und zur Feststellung der Funktionsfähigkeit
GB2165966A (en) * 1984-10-15 1986-04-23 Mitsubishi Electric Corp Position control system for lift
JPH04260590A (ja) * 1991-02-13 1992-09-16 Hitachi Ltd エレベーターの戸制御装置
JPH04266378A (ja) * 1991-01-28 1992-09-22 Mitsubishi Electric Corp エレベータの監視制御装置
JPH05270750A (ja) * 1992-03-23 1993-10-19 Mitsubishi Electric Corp エレベーターの速度制御装置
US5274203A (en) * 1989-06-30 1993-12-28 Otis Elevator Company "Smart" position transducer system for elevators
JPH07330243A (ja) * 1994-06-10 1995-12-19 Hitachi Ltd エレベータ制御装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140802A1 (de) * 1983-10-19 1985-05-08 Société dite ASTEC S.A." Vorrichtung zum Unterscheiden von Alarm von Aufzügen und zur Feststellung der Funktionsfähigkeit
GB2165966A (en) * 1984-10-15 1986-04-23 Mitsubishi Electric Corp Position control system for lift
US5274203A (en) * 1989-06-30 1993-12-28 Otis Elevator Company "Smart" position transducer system for elevators
JPH04266378A (ja) * 1991-01-28 1992-09-22 Mitsubishi Electric Corp エレベータの監視制御装置
JPH04260590A (ja) * 1991-02-13 1992-09-16 Hitachi Ltd エレベーターの戸制御装置
JPH05270750A (ja) * 1992-03-23 1993-10-19 Mitsubishi Electric Corp エレベーターの速度制御装置
JPH07330243A (ja) * 1994-06-10 1995-12-19 Hitachi Ltd エレベータ制御装置

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 041 (M - 1359) 26 January 1993 (1993-01-26) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 056 (M - 1362) 4 February 1993 (1993-02-04) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 044 (M - 1547) 24 January 1994 (1994-01-24) *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 004 30 April 1996 (1996-04-30) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1164105A3 (de) * 2000-05-09 2003-12-10 Otis Elevator Company, A New Jersey Corporation Wartunssmeldung auf Basis der Fahrparametern eines Aufzugs
EP1650153A3 (de) * 2000-05-09 2006-05-31 Otis Elevator Company Wartungsmeldung auf Basis der Fahrparameter eines Aufzugs
US7909144B2 (en) 2005-03-22 2011-03-22 Mitsubishi Denki Kabushiki Kaisha Car oscillation detecting device for elevator using a set value to judge car oscillation

Also Published As

Publication number Publication date
FR2757142B1 (fr) 1999-03-05
FR2757142A1 (fr) 1998-06-19

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