EP0140802A1 - Discerning device for lift alarms and for ascertaining the proper functioning - Google Patents

Discerning device for lift alarms and for ascertaining the proper functioning Download PDF

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Publication number
EP0140802A1
EP0140802A1 EP84420160A EP84420160A EP0140802A1 EP 0140802 A1 EP0140802 A1 EP 0140802A1 EP 84420160 A EP84420160 A EP 84420160A EP 84420160 A EP84420160 A EP 84420160A EP 0140802 A1 EP0140802 A1 EP 0140802A1
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EP
European Patent Office
Prior art keywords
alarm
time
elevator
button
period
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EP84420160A
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German (de)
French (fr)
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EP0140802B1 (en
Inventor
Bruno Vest
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Dite Astec Sa" Ste
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Dite Astec Sa" Ste
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Publication of EP0140802A1 publication Critical patent/EP0140802A1/en
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    • 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
    • B66B5/0012—Devices monitoring the users of the elevator system

Definitions

  • the present invention relates to an improved device which makes it possible to analyze the pressures exerted on the alarm button of an elevator, or of a hoist, or any other equivalent installation, and to decide whether the call is to be answered. in consideration or if this call results from malice or inattention of the user.
  • It also relates to a device of the aforementioned type which can be coupled to a control system which automatically checks the proper functioning of the elevator.
  • All elevators currently have an alarm system capable of being activated by the user in the event of an operating anomaly. In addition, they are all fitted with safety circuits enabling them to be put out of service in the event of a malfunction.
  • Alarm systems are generally limited to a simple doorbell (or siren, lamp) placed in the elevator shaft or on the landing, said alarm being possibly echoed in a central room, for example at the caretaker of the building. This device is powered by batteries.
  • the device according to the invention can be adapted to any type of existing elevator, regardless of their operating principle, electric or hydraulic, of all generations, of all brands, without intervention on the circuits of security of existing installations.
  • said a-, teardrop control device is associated with an assembly also making it possible to control the proper functioning of the elevator control members.
  • the means for controlling this correct operation are consisting on the one hand, by a sensor placed opposite a movable member of the elevator (traction sheave, deflection pulley, regulator pulley ...), this sensor can be a photoelectric cell, a magnetic detector, or a contact, said sensor being associated with means for automatically controlling the start of the elevator, which can be actuated after a predetermined time, these means making it possible to trigger two calls, at two different levels so as to generate the machine rotation and device reset. It also includes basic means for transmitting information signaling an operating anomaly in the elevator.
  • the alarm discriminator is arranged between the button (1) located in the cabin and the member (2) of the actual alarm transmitter making it possible to transmit the information, for example to a service provider ensuring permanent monitoring for a plurality of devices.
  • This alarm set essentially comprises a holding relay (3), timing means (4-5) and a discriminator proper (6).
  • a monitoring system making it possible to verify the correct operation of the elevator is preferably combined with the alarm assembly illustrated in FIG. 1.
  • Such a system has a structure of the type illustrated in FIG. 2.
  • This system of monitoring essentially comprises a device (7) for detecting the rotation of the machine (8), placed opposite a movable member of said machine.
  • a device is constituted by a sensor (photoelectric cell, magnetic detector, dry contact, etc.) placed opposite, for example, the traction sheave or the deflection pulley that the elevator (8) comprises.
  • This set consists essentially of a timer (9) associated with a reset clutch system (10).
  • the timer (9) controls two successive calls (11-12) on two different stages (13-14), calls which must cause the machine to rotate and the device to be reset.
  • the circuit connected to the alarm allows an analysis to be carried out in three stages.
  • the device After a first press on the button (1), the device is put on standby.
  • the button (1) After a period determined by the timer T2 and before the end of listening determined by the timer Tl, if the button (1) is always or again pressed the alarm is transmitted outside, to a service provider for example, ensuring permanent monitoring of a plurality of devices.
  • the device At the end of the listening period determined by the timer Tl, the device is automatically reset.
  • a main delay is reset to zero each time it is operated by the sensor placed opposite a movable member (traction sheave for example).
  • the timer (9) triggers two successive calls at two different levels.
  • the elevator does not work, it triggers a second call sending the elevator to another floor. If it works, the timer is reset.
  • the invention is not limited to the embodiment described above, but it covers all the variants produced in the same spirit.
  • the alarm discriminator means enabling the reception notice to be displayed in the cabin by the control center, the establishment of a telephone link with the user, emergency lighting in cabin....
  • the device according to the invention is produced from electromagnetic elements, it is obvious that it could be produced by means of electronic elements.

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)

Abstract

1. Discriminator device for an alarm in lifts, which device is capable of being connected between an alarm push-button (1) arranged in the cabin and an external alarm system (2), the device comprising a first automatic time switch which is capable of being triggered by the push-button, the said automatic time switch defining, after a first pressing of the push-button, a first period of time, and a second automatic time switch defining a second period of time, the second period of time ending after the end of the first period of time, the device being reset at zero at the end of the second period of time, the device being characterized in that it takes into consideration the pressings of the alarm push-button (1) only after the first period of time, the said period of time being a function of the run of the equipment and of the possible proportion of unwarranted calls, the said discriminator permitting, after the first period of time and before the end of the second period of time, the alarm to be transmitted if a new pressing of the push-button has occurred.

Description

La présente invention concerne un dispositif perfectionné qui permet d'analyser les pressions exercées sur le bouton d'alarme d'un ascenseur, ou d'un monte- charge, ou toute autre installation équivalente, et de décider si l'appel est à prendre en considération ou si cet appel résulte d'une malveillance ou d'une inattention de l'usager.The present invention relates to an improved device which makes it possible to analyze the pressures exerted on the alarm button of an elevator, or of a hoist, or any other equivalent installation, and to decide whether the call is to be answered. in consideration or if this call results from malice or inattention of the user.

Elle concerne également un dispositif du type précité qui peut être couplé à un système de contrôle qui vérifie de manière automatique le bon fonctionnement de l'ascenseur.It also relates to a device of the aforementioned type which can be coupled to a control system which automatically checks the proper functioning of the elevator.

Tous les ascenseurs comportent actuellement un système d'alarme susceptible d'être actionné par l'utilisateur en cas d'anomalie de fonctionnement. Par ailleurs, ils sont tous équipés de circuits de sécurité permettant de les mettre hors service en cas d'anomalie de fonctionnement. Des systèmes d'alarme sont en général limités à une simple sonnette (ou sirène, lampe) disposée dans la gaine d'ascenseur ou au palier, ladite alarme étant éventuellement répercutée dans un local central, par exemple chez le gardien de l'immeuble. Ce dispositif est alimenté par piles ou batteries.All elevators currently have an alarm system capable of being activated by the user in the event of an operating anomaly. In addition, they are all fitted with safety circuits enabling them to be put out of service in the event of a malfunction. Alarm systems are generally limited to a simple doorbell (or siren, lamp) placed in the elevator shaft or on the landing, said alarm being possibly echoed in a central room, for example at the caretaker of the building. This device is powered by batteries.

A ce jour, aucun dispositif de contrôle simple n'a été proposé permettant de détecter les appels intempestifs résultant par exemple d'une erreur de l'utilisateur.To date, no simple monitoring device has been proposed making it possible to detect nuisance calls resulting, for example, from a user error.

En ce qui concerne le bon fonctionnement de l'appareil en cas de panne, celle-ci est en général constatée par l'usager qui doit alors prévenir les personnes habilitées pour effectuer le dépannage.Regarding the proper functioning of the device in the event of a breakdown, this is generally noted by the user, who must then notify the persons authorized to carry out troubleshooting.

Or, on a trouvé, et c'est ce qui fait l'objet de la présente invention, un dispositif simple, économique à réaliser, qui non seulement permet d'assurer le contrôle du système d'alarme de telle sorte que les appels intempestifs ne soient pas pris en considération et qui, par ailleurs, peut être associé à un ensemble permettant également de contrôler le bon fonctionnement de l'installation. De plus, l'appareil selon l'invention peut être adapté à tout type d'ascenseur existant et ce, quel que soit leur principe de fonctionnement, électrique ou hydraulique, de toutes générations, de toutes les marques, sans intervention sur les circuits de sécurité des installations existantes.However, we have found, and this is what is the subject of the present invention, a simple device, economical to produce, which not only makes it possible to ensure the control of the alarm system so that calls untimely are not taken into account and which, moreover, can be associated with an assembly also making it possible to control the correct operation of the installation. In addition, the device according to the invention can be adapted to any type of existing elevator, regardless of their operating principle, electric or hydraulic, of all generations, of all brands, without intervention on the circuits of security of existing installations.

D'une manière générale, l'invention concerne donc un dispositif discriminateur d'alarme d'ascenseurs, dispositif susceptible d'être branché entre le bouton (ou similaire) de commande disposé dans la cabine et le système d'alarme extérieur proprement dit, ledit dispositif se caractérisant par le fait qu'il comporte un ensemble (désigné dans la suite de la description par l'expression "discriminateur") qui ne prend en considération les impulsions sur le bouton d'alarme qu'après un temps réglable en fonction de la course de l'installation et du taux possible d'appels non motivés, ledit discriminateur permettant :

  • - après une première impulsion sur le bouton d'alarme, de mettre en veille le dispositif ;
  • - après un temps programmé et pendant un temps d'écoute sensibilisable, de transmettre l'alarme si une nouvelle impulsion a lieu ;
  • - après le temps d'.écoute sensibilisable de remettre à zéro ledit dispositif..
In general, the invention therefore relates to an elevator alarm discriminating device, a device capable of being connected between the control button (or similar) placed in the car and the external alarm system proper, said device being characterized by the fact that it comprises an assembly (designated in the remainder of the description by the expression "discriminator") which takes into account the impulses on the alarm button only after a time adjustable as a function the installation run and the possible rate of unmotivated calls, said discriminator allowing:
  • - after a first press on the alarm button, put the device on standby;
  • - after a programmed time and during a sensitizable listening time, to transmit the alarm if a new impulse takes place;
  • - after the sensitizable listening time, reset the said device.

Par ailleurs, selon un mode préférentiel de mise en oeuvre de l'invention, ledit dispositif de contrôle d'a-, larme est associé à un ensemble permettant également de contrôler le bon fonctionnement des organes de commande de l'ascenseur. Dans ce mode de réalisation, les moyens permettant de contrôler ce bon fonctionnement sont constitués d'une part, par un capteur placé en regard d'un organe mobile de l'ascenseur (poulie de traction, poulie de renvoi, poulie de régulateur...), ce capteur pouvant être une cellule photoélectrique, un détecteur magnétique, ou un contact, ledit capteur étant associé à des moyens de commande automatique de la mise en route de l'ascenseur, actionnable au bout d'un temps prédéterminé, ces moyens permettant de déclencher deux appels, à deux niveaux différents de manière à engendrer la rotation de la machine et la remise à zéro du dispositif. Il comporte également des moyens de base permettant de transmettre une information signalant une anomalie de fonctionnement de l'ascenseur.Furthermore, according to a preferred embodiment of the invention, said a-, teardrop control device is associated with an assembly also making it possible to control the proper functioning of the elevator control members. In this embodiment, the means for controlling this correct operation are consisting on the one hand, by a sensor placed opposite a movable member of the elevator (traction sheave, deflection pulley, regulator pulley ...), this sensor can be a photoelectric cell, a magnetic detector, or a contact, said sensor being associated with means for automatically controlling the start of the elevator, which can be actuated after a predetermined time, these means making it possible to trigger two calls, at two different levels so as to generate the machine rotation and device reset. It also includes basic means for transmitting information signaling an operating anomaly in the elevator.

L'invention et les avantages qu'elle apporte seront cependant mieux compris grâce à l'exemple de réalisation donné ci-après à titre indicatif mais non limitatif et qui est illustré par les schémas annexés dans lesquels :

  • - la figure 1 illustre un discriminateur d'alarme conforme à l'invention ;
  • - la figure 2 illuste le schéma de principe d'un ensemble permettant la surveillance du bon fonctionnement de l'appareil, susceptible d'être associé au discriminateur d'alarme illustré à la figure 1 ;
  • - la figure 3 est un schéma de détail montrant la manière dont est réalisé un dispositif conforme à l'invention comportant à la fois un discriminateur d'alarme ainsi qu'un ensemble de surveillance.
The invention and the advantages which it brings will however be better understood thanks to the embodiment given below by way of indication but not limitation and which is illustrated by the appended diagrams in which:
  • - Figure 1 illustrates an alarm discriminator according to the invention;
  • - Figure 2 illustrates the block diagram of an assembly for monitoring the proper functioning of the device, likely to be associated with the alarm discriminator illustrated in Figure 1;
  • - Figure 3 is a detailed diagram showing the manner in which a device according to the invention is produced, comprising both an alarm discriminator and a monitoring assembly.

Si l'on se reporte aux figures annexées, ainsi que cela ressort de la figure 1, le discriminateur d'alarme est disposé entre le bouton (1) situé en cabine et l'organe (2) transmetteur d'alarme proprement dit permettant de transmettre l'information, par exemple chez un prestataire de service assurant une surveillance permanente pour une pluralité d'appareils.If reference is made to the appended figures, as is apparent from FIG. 1, the alarm discriminator is arranged between the button (1) located in the cabin and the member (2) of the actual alarm transmitter making it possible to transmit the information, for example to a service provider ensuring permanent monitoring for a plurality of devices.

Cet ensemble d'alarme comporte essentiellement un relais de maintien (3), des moyens de temporisation (4-5) et un discriminateur proprement dit (6).This alarm set essentially comprises a holding relay (3), timing means (4-5) and a discriminator proper (6).

Un système de surveillance permettant de vérifier le bon fonctionnement de l'ascenseur est, de préférence, combiné à l'ensemble d'alarme illustré par la figure 1. Un tel système a une structure du type illustré à la figure 2. Ce système de surveillance comporte essentiellement un dispositif (7) de détection de la rotation de la machine (8), disposé en regard d'un organe mobile de ladite machine. Un tel dispositif est constitué par un capteur (cellule photoélectrique, détecteur magnétique, contact sec...) disposé en regard par exemple de la poulie de traction ou de la poulie de renvoi que comporte l'ascenseur (8). Cet ensemble est constitué essentiellement par une minuterie (9) associée à un système d'embrayage de remise à zéro (10).A monitoring system making it possible to verify the correct operation of the elevator is preferably combined with the alarm assembly illustrated in FIG. 1. Such a system has a structure of the type illustrated in FIG. 2. This system of monitoring essentially comprises a device (7) for detecting the rotation of the machine (8), placed opposite a movable member of said machine. Such a device is constituted by a sensor (photoelectric cell, magnetic detector, dry contact, etc.) placed opposite, for example, the traction sheave or the deflection pulley that the elevator (8) comprises. This set consists essentially of a timer (9) associated with a reset clutch system (10).

La minuterie (9) commande deux appels successifs (11-12) à deux étages différents (13-14), appels qui doivent engendrer la rotation de la machine et la remise à zéro du dispositif.The timer (9) controls two successive calls (11-12) on two different stages (13-14), calls which must cause the machine to rotate and the device to be reset.

Un tel ensemble permettant à la fois le contrôle du système d'alarme ainsi que le contrôle du bon fonctionnement de la machine est illustré dans le schéma de détail de la figure 3.Such an assembly allowing both the control of the alarm system as well as the control of the correct operation of the machine is illustrated in the detailed diagram of FIG. 3.

Ainsi que cela ressort de cette figure, cet ensemble est constitué essentiellement d'un coffret (non représenté) dans lequel se trouvent :

  • - l'alimentation,
  • - les batteries (15) chargées du maintien en fonctionnement en cas de panne de secteur,
  • - les temporisations et relais nécessaires aux différentes fonctions, en processus électro-mécanique ou électronique (ces différents éléments n'étant pas décrits en détail dans la suite de la description mais permettant à un homme du métier en partant du schéma annexé, de reproduire le dispositif conforme à l'invention),
  • - un détecteur extérieur,
  • - les sorties sur bornes de raccordement.
As can be seen from this figure, this set consists essentially of a box (not shown) in which there are:
  • - food,
  • - the batteries (15) responsible for maintaining operation in the event of a power failure,
  • - the timers and relays necessary for the different functions, in electro-mechanical or electronic process (these different elements not being described in detail in the following description but allowing a person skilled in the art starting from the diagram attached, to reproduce the device according to the invention),
  • - an external detector,
  • - outputs on connection terminals.

Le fonctionnement d'un tel appareil est le suivant.The operation of such an apparatus is as follows.

Concernant le discriminateur d'alarme (1), le circuit relié à l'alarme permet d'effectuer une analyse se déroulant en trois temps.Regarding the alarm discriminator (1), the circuit connected to the alarm allows an analysis to be carried out in three stages.

Après une première impulsion sur le bouton (1), on provoque la mise en veille du dispositif.After a first press on the button (1), the device is put on standby.

Après une période déterminée par la minuterie T2 et avant la fin de l'écoute déterminée par la minuterie Tl, si le bouton (1) est toujours ou à nouveau actionné l'alarme est transmise à l'extérieur, chez un prestataire par exemple, assurant une surveillance permanente d'une pluralité d'appareils.After a period determined by the timer T2 and before the end of listening determined by the timer Tl, if the button (1) is always or again pressed the alarm is transmitted outside, to a service provider for example, ensuring permanent monitoring of a plurality of devices.

A la fin de la période d'écoute déterminée par la minuterie Tl le dispositif est automatiquement remis à zéro.At the end of the listening period determined by the timer Tl, the device is automatically reset.

Concernant l'ensemble de contrôle du bon fonctionnement, ensemble qui est relié au secteur, une temporisation principale est remise à zéro à chaque fonctionnement par l'intermédiaire du capteur placé en regard d'un organe mobile (poulie de traction par exemple).Regarding the proper functioning control assembly, which is connected to the sector, a main delay is reset to zero each time it is operated by the sensor placed opposite a movable member (traction sheave for example).

Si l'appareil n'a pas fonctionné au bout d'un temps prédéterminé à l'avance, par exemple au bout de six heures, la minuterie (9) déclenche deux appels successifs à deux niveaux différents.If the device has not operated after a predetermined time in advance, for example after six hours, the timer (9) triggers two successive calls at two different levels.

Si à la suite du premier appel, l'ascenseur fonctionne, la minuterie est remise à zéro.If after the first call, the elevator works, the timer is reset.

En revanche, si à la suite du premier appel, l'ascenseur ne fonctionne pas, il se déclenche un second appel envoyant l'ascenseur à un autre étage. S'il fonctionne, la minuterie est remise à zéro.However, if after the first call, the elevator does not work, it triggers a second call sending the elevator to another floor. If it works, the timer is reset.

En revanche, si l'ascenseur ne fonctionne pas, l'alarme est transmise signalant le non-fonctionnement. Un tel ensemble, d'une très grande simplicité, et d'une très grande efficacité est susceptible d'être adapté , sur tous les types d'ascenseurs existants sans avoir à intervenir sur les circuits de sécurité que comportent de telles installations.On the other hand, if the elevator does not work, the alarm is transmitted indicating the non-operation. Such an assembly, of a very great simplicity, and of a very high efficiency is capable of being adapted, on all types of existing elevators without having to intervene on the safety circuits that such installations comprise.

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation décrit précédemment mais elle en couvre toutes les variantes réalisées dans le même esprit. Ainsi, il est possible d'adjoindre au discriminateur d'alarme des moyens permettant un affichage en cabine de l'avis de réception par le central de contrôle, l'établissement d'une liaison téléphonique avec l'usager, un éclairage de secours en cabine....Of course, the invention is not limited to the embodiment described above, but it covers all the variants produced in the same spirit. Thus, it is possible to add to the alarm discriminator means enabling the reception notice to be displayed in the cabin by the control center, the establishment of a telephone link with the user, emergency lighting in cabin....

Enfin, si dans le mode de réalisation illustré, l'appareil selon l'invention est réalisé à partir d'éléments électro-magnétiques, il est évident qu'il pourrait être réalisé au moyen d'éléments électroniques.Finally, if in the illustrated embodiment, the device according to the invention is produced from electromagnetic elements, it is obvious that it could be produced by means of electronic elements.

Claims (2)

1/ Dispositif discriminateur d'alarme d'ascenseurs, dispositif susceptible d'être branché entre le bouton de commande (1) disposé dans la cabine et le système d'alarme extérieur proprement dit (2), caractérisé par le fait qu'il comporte un ensemble (discriminateur) qui ne prend en considération les impulsions sur le bouton d'alarme (1) qu'après un temps réglable en fonction de la course de l'installation et du taux possible d'appels non motivés, ledit discriminateur permettant : - après une première impulsion sur le bouton d'alarme (1), de mettre en veille le dispositif ; - après un temps programmable et pendant un temps d'écoute sensibilisable de transmettre l'alarme si une nouvelle impulsion a lieu ; - après le temps d'écoute sensibilisable de remettre à zéro ledit dispositif. 1 / Elevator alarm discriminating device, device capable of being connected between the control button (1) located in the car and the actual external alarm system (2), characterized in that it comprises an assembly (discriminator) which takes into account the pulses on the alarm button (1) only after an adjustable time according to the travel of the installation and the possible rate of unmotivated calls, said discriminator allowing: - after a first press on the alarm button (1), put the device on standby; - after a programmable time and during a sensitizable listening time to transmit the alarm if a new impulse takes place; - after the sensitizable listening time, reset said device. 2/ Dispositif selon la revendication 1, caractérisé par le fait que ledit dispositif discriminateur d'alarme est associé à un ensemble permettant également de contrôler le bon fonctionnement des organes de commande de l'ascenseur, cet ensemble étant consitué d'une part, par un capteur (7) placé en regard d'un organe mobile de l'ascenseur, ledit capteur étant associé à des moyens de commande automatique de la mise en route de l'ascenseur actionnables au bout d'un temps prédéterminé, ces moyens permettant de déclencher deux appels successifs, à deux niveaux différents, de manière à engendrer la rotation de la machine et la remise à zéro du dispositif.2 / Device according to claim 1, characterized in that said alarm discriminator device is associated with an assembly also making it possible to control the correct operation of the elevator control members, this assembly being constituted on the one hand, by a sensor (7) placed opposite a movable member of the elevator, said sensor being associated with means for automatic control of the starting of the elevator which can be actuated after a predetermined time, these means making it possible to trigger two successive calls, at two different levels, so as to cause the machine to rotate and the device to be reset.
EP19840420160 1983-10-19 1984-09-27 Discerning device for lift alarms and for ascertaining the proper functioning Expired EP0140802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8316851 1983-10-19
FR8316851A FR2553747B1 (en) 1983-10-19 1983-10-19 DISCRIMINATOR OF ELEVATOR ALARM AND VERIFICATION OF THE PROPER OPERATION OF THE APPARATUS

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EP0140802A1 true EP0140802A1 (en) 1985-05-08
EP0140802B1 EP0140802B1 (en) 1987-03-25

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DE (1) DE3462779D1 (en)
FR (1) FR2553747B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591373A1 (en) * 1985-12-06 1987-06-12 Televeil Alarm discriminator for a lift
EP0847954A1 (en) * 1996-12-13 1998-06-17 Thyssen Ascenseurs Operation monitoring system for one elevator or more
EP1076030A2 (en) * 1999-08-06 2001-02-14 Jean Paul Bastiaans Belot Communication system for lifts with transmission of recorded information

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688293A (en) * 1970-05-08 1972-08-29 Standard Farrington Alarm & Si Automatic time-controlled alarm system
FR2404268A1 (en) * 1977-09-27 1979-04-20 Mulder Hca Alarm system for lift enabling verbal communication - has blocking circuit of electromagnet and ratchet which functions only in breakdown situations
FR2471637A1 (en) * 1979-12-10 1981-06-19 Quignard Bernard Alarm transmission system for lift safety device - uses double control circuit which activates telephonic transmitting system only if alarm persists for predetermined time
FR2488010A1 (en) * 1980-08-01 1982-02-05 Otis Elevator Co Alarm system for lift cabin - includes pushbutton switch in cabin initiating alarm signal which is only transmitted if lift doors do not open in specified time

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688293A (en) * 1970-05-08 1972-08-29 Standard Farrington Alarm & Si Automatic time-controlled alarm system
FR2404268A1 (en) * 1977-09-27 1979-04-20 Mulder Hca Alarm system for lift enabling verbal communication - has blocking circuit of electromagnet and ratchet which functions only in breakdown situations
FR2471637A1 (en) * 1979-12-10 1981-06-19 Quignard Bernard Alarm transmission system for lift safety device - uses double control circuit which activates telephonic transmitting system only if alarm persists for predetermined time
FR2488010A1 (en) * 1980-08-01 1982-02-05 Otis Elevator Co Alarm system for lift cabin - includes pushbutton switch in cabin initiating alarm signal which is only transmitted if lift doors do not open in specified time

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2591373A1 (en) * 1985-12-06 1987-06-12 Televeil Alarm discriminator for a lift
EP0847954A1 (en) * 1996-12-13 1998-06-17 Thyssen Ascenseurs Operation monitoring system for one elevator or more
FR2757142A1 (en) * 1996-12-13 1998-06-19 Thyssen Ascenseurs SYSTEM FOR MONITORING THE OPERATION OF AT LEAST ONE ELEVATOR
EP1076030A2 (en) * 1999-08-06 2001-02-14 Jean Paul Bastiaans Belot Communication system for lifts with transmission of recorded information
EP1076030A3 (en) * 1999-08-06 2003-08-13 Jean Paul Bastiaans Belot Communication system for lifts with transmission of recorded information

Also Published As

Publication number Publication date
DE3462779D1 (en) 1987-04-30
EP0140802B1 (en) 1987-03-25
FR2553747B1 (en) 1985-11-29
FR2553747A1 (en) 1985-04-26

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