EP1427660B1 - Monitoring system - Google Patents
Monitoring system Download PDFInfo
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- EP1427660B1 EP1427660B1 EP02754114A EP02754114A EP1427660B1 EP 1427660 B1 EP1427660 B1 EP 1427660B1 EP 02754114 A EP02754114 A EP 02754114A EP 02754114 A EP02754114 A EP 02754114A EP 1427660 B1 EP1427660 B1 EP 1427660B1
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- European Patent Office
- Prior art keywords
- sensor means
- door
- monitoring system
- signals
- evaluating
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- 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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/22—Operation of door or gate contacts
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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
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Definitions
- the invention relates to a monitoring system for monitoring a manhole or car door of an elevator system.
- US 5,644,111 discloses an over-the-waist system according to the preamble of claim 1.
- elevator systems have so-called double doors, that is to say both shaft doors and also cabin doors arranged on the elevator car.
- the opening and closing of the shaft doors is usually initiated by the cabin or the car doors.
- all shaft doors must always be closed during operation, with the exception of the shaft door of that floor in which the elevator car is just stopping.
- the car doors must be closed when the elevator is not stopping on a floor to be loaded or unloaded or entered or left.
- the manhole and / or cabin doors can also be opened when the elevator car is located elsewhere than in the above-described situations.
- the state ie the position of the shaft and car doors or the position of bars with which the shaft and / or car doors can be locked in their closed positions, are monitored by means of monitoring systems.
- sensor means for example in the form of positively driven devices with safety contact points.
- the safety contact points are integrated in series connection in a safety circuit.
- the arrangement is such that the elevator car can only be moved when the safety circuit and thus all safety contacts integrated in it are closed.
- the object of the invention is thus seen to show an improved monitoring system of the type mentioned, with which the disadvantages of the prior art can be avoided or at least greatly reduced.
- the detection of the state of the manhole or car doors by the sensor means should be analyzable and diagnosable.
- gradual deteriorations of individual subsystems should be discernible so that preventive maintenance can be initiated in good time.
- the new monitoring system should act in such a way that malfunctions or failures of individual contacts do not lead to a failure of the entire elevator system.
- the shaft doors and / or the car doors have sensor means with which their condition, that is to say the assumption of their open or closed position, is detected.
- the monitoring system further has an evaluation system connected to the sensor means, which evaluates the signals supplied by the sensor means. This evaluation takes place at short intervals and makes it possible to detect the condition of the monitored manhole or car door; as well temporal changes of the signal characteristic can be detected.
- the evaluation unit can also locate an error from the signals of the sensor means and thus an analysis and diagnosis relating to the error is possible.
- the signal characteristics of the Sensor signals supplied can also be detected temporal quality reductions, so that precautionary maintenance measures can be initiated.
- the evaluation system is designed such that it can detect and localize a fault in particular and / or determine a defect of a sensor means and / or determine whether sensor means are worn and / or can detect incorrect manipulation of the shaft door associated with a particular sensor means and / or or can detect the need for maintenance and / or recommend servicing.
- an evaluation system can be provided per floor; This evaluation system is preferably connected via a data bus with an elevator control.
- a common evaluation system can be provided for several floors; Such an evaluation system is preferably connected via a data bus to an elevator control.
- the evaluation system has a local processor to evaluate the signals of the sensor means.
- a particularly favorable arrangement is obtained if the evaluation system of the new monitoring system can also process other signals or data of the elevator installation, ie other lift sizes.
- a redundancy in the elevator system can be used, in that, on the one hand, a sensor means indicates the closed position of a car door and, on the other hand, an incremental encoder of the door drive also detects the closed position of the car door.
- the evaluation system is designed so that it also detects the temporal changes in the signal characteristic, ie the characteristic of the signals to be evaluated; This makes it possible to detect abnormal bounce behavior of sensor means or abnormal dynamic waveforms and / or abnormal static conditions, for example a voltage drop, on sensor means. This makes it possible to perform diagnostics at the level of individual components and to initiate the precautionary maintenance of individual sensors.
- a sensor means comprising at least two redundant sensors; thereby, the failure of a single sensor can be prevented from leading to failure of the entire elevator system equipped with the new monitoring system; At least in the short term, the elevator system can remain in operation if a sensor of a sensor means is no longer functional.
- a sensor means which comprises two sensors which are arranged in the region of a shaft door or the car door, that during the closing or opening, or during the change of the state of the shaft door or the car door, only one of the two Sensors and later offset the second time the two sensors provides a signal. It may for example be provided that a first sensor emits a signal when a manhole or car door is closed except for a remaining door gap, about 10 mm, and that the second sensor emits a signal when the manhole or car door completely closed and locked. In this way it can be seen whether a manhole or car door completely closes or due to pollution, mechanical wear, deformation no longer completely closes.
- the monitoring system can be designed so that there is no interruption of operation if the remaining door gap does not exceed a limit value, but at the same time a service call is generated.
- the evaluation system advantageously triggers at least one predefined reaction, in particular the localization of an error and / or the generation of a service call and / or the storage of diagnostic information and / or the stopping of the elevator car or the execution of a service call other situation-dependent reaction if a shaft door was recognized as open.
- FIG. 1 shows an arrangement with decentralized evaluation.
- a not shown elevator system has a door 10, which may be a shaft door or a car door.
- This door 10 is associated with sensor means, namely a first sensor means 12 and a second sensor means 14.
- Each of the sensor means 12, 14 has one or more sensors (not shown), which are formed in the present embodiment as a switch and actuated via door elements 11.
- the sensor means 12, 14 are connected via connections 16, 18 with an evaluation system 20, which is intended only for the evaluation of the signals of the door 10.
- the evaluation system 20 is connected via a bus node 22 to a data bus 24, which is connected to a central controller 26.
- bus node 22 In addition to the signals supplied by the sensor means 12, 14, other signals, that is other lift sizes, are connected to the bus node 22 via further connections 30, 32; also a connection to the evaluation system or not illustrated integrated computer would be possible.
- the evaluation system 20 can also be integrated in the bus node 22.
- Fig. 2 shows an arrangement with central evaluation. From the elevator system, not shown, a first door 10 and another, also designated 10 second door is shown. Each of the doors 10 is associated with sensor means, namely a first sensor means 12 and a second sensor means 14. Each of the sensor means 12, 14 has one or more sensors (not shown), which are formed in the present embodiment as a switch and actuated via door elements 11.
- the sensor means 12, 14 of the doors 10 are connected via two connections 16, 18 with the evaluation system 20, which is intended for the evaluation of the signals of the two doors 10.
- the evaluation system 20 is connected to a data bus 24, which is connected to a controller 26.
- other signals that is to say other lift sizes, are connected to the evaluation system 20 via further connections 30, 32; It would also be possible to connect to an integrated computer (not shown).
- the operation of the above-described arrangements of Figs. 1 and 2 is substantially the same.
- the trained as a switch sensors of the sensor means 12, 14 cooperate with the door elements 11 of the doors 10.
- the signals generated by the sensor means 12, 14 describe the switching states of the corresponding switches, which form the sensors of the sensor means 12, 14; These switching states correspond to the states or positions of the door 10, that is, they indicate in each case whether the door 10 is open or closed is.
- signal characteristics emanate from the signals emanating from the sensors.
- the signals and signal characteristics are evaluated in the evaluation system 20. Based on the results of the evaluation, suitable reactions are initiated; such measures are, for example, the generation of a precautionary service call, the storage of diagnostic information or the decommissioning of the elevator system.
- the evaluation can according to FIG. 1 per door, so decentralized, or as shown in FIG. 2 for several doors, so centrally done.
- the evaluation of the signals can also be taken over by the bus nodes.
- the bus nodes also form the evaluation systems. For example, no qualified information or diagnosis is transmitted to the central controller, but only one status is transmitted, for example the message "switch closed / diagnosis in order".
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Door Apparatuses (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
Description
Die Erfindung betrifft ein Überwachungssystem zur Überwachung einer Schacht- oder Kabinentüre eines Aufzugssystems.The invention relates to a monitoring system for monitoring a manhole or car door of an elevator system.
US 5 644 111 offenbart ein Überwochungssystem gemäβ dein Oberbegriff des Anspruchs 1.US 5,644,111 discloses an over-the-waist system according to the preamble of claim 1.
Aufzugssysteme weisen heutzutage sogenannte Doppeltüren auf, das heisst sowohl Schachttüren wie auch an der Aufzugskabine angeordnete Kabinentüren. Das Öffnen und Schliessen der Schachttüren wird üblicherweise durch die Kabine oder die Kabinentüren veranlasst. Aus Sicherheitsgründen müssen im Betrieb alle Schachttüren stets geschlossen sein, mit Ausnahme der Schachttüre desjenigen Stockwerkes, in welchem die Aufzugskabine gerade anhält. Ebenso müssen die Kabinenturen geschlossen sein, wenn der Aufzug nicht gerade in einem Stockwerk anhält, um be- oder entladen zu werden bzw. um betreten oder verlassen zu werden. Zu Unterhaltszwecken können die Schacht- und/oder Kabinentüren natürlich auch geöffnet werden, wenn sich die Aufzugskabine andernorts als in den oben beschriebenen Lagen befindet. Der Zustand, d.h. die Stellung der Schacht- und Kabinentüren bzw. die Stellung von Riegeln, mit welchen die Schacht- und oder Kabinentüren in ihren Schliessstellungen verriegelbar sind, werden mit Hilfe von Überwachungssystemen überwacht. Hierzu sind Sensormittel, zum Beispiel in der Art von zwangsgeführten Einrichtungen mit Sicherheitskontaktstellen, vorgesehen. Die Sicherheitskontaktstellen sind in Serieschaltung in einem Sicherheitskreis integriert. Die Anordnung ist so, dass die Aufzugskabine nur dann verschoben werden kann, wenn der Sicherheitskreis und damit auch alle in ihm integrierten Sicherheitskontakte geschlossen sind.Today, elevator systems have so-called double doors, that is to say both shaft doors and also cabin doors arranged on the elevator car. The opening and closing of the shaft doors is usually initiated by the cabin or the car doors. For safety reasons, all shaft doors must always be closed during operation, with the exception of the shaft door of that floor in which the elevator car is just stopping. Likewise, the car doors must be closed when the elevator is not stopping on a floor to be loaded or unloaded or entered or left. For maintenance purposes, of course, the manhole and / or cabin doors can also be opened when the elevator car is located elsewhere than in the above-described situations. The state, ie the position of the shaft and car doors or the position of bars with which the shaft and / or car doors can be locked in their closed positions, are monitored by means of monitoring systems. For this purpose, sensor means, for example in the form of positively driven devices with safety contact points, are provided. The safety contact points are integrated in series connection in a safety circuit. The arrangement is such that the elevator car can only be moved when the safety circuit and thus all safety contacts integrated in it are closed.
Überwachungssysteme mit Sicherheitskreisen dieser Art sind mit zahlreichen Nachteilen behaftet, die im Folgenden kurz aufgeführt werden.
- Jeder Sicherheitskreis weist inhärente Probleme auf; hierzu gehören die Länge der Verbindungen, der Spannungsabfall im Sicherheitskreis und der verhältnismässig hohe Montageaufwand.
- Die einzelnen Sicherheitskontakte sind verhältnismässig störanfällig; es kommt daher häufig zu unnötigen Notstopps des Aufzugssystems.
- Trotz eines Überwachungssystems mit einem Sicherheitskreis lassen sich unsichere bzw. gefährliche Situationen nicht vermeiden; einerseits lassen sich die Sicherheitskontakte einzeln oder gemeinsam verhältnismässig leicht überbrücken, was praktisch einem Nichtvorhandensein der Sicherheitsvorkehrungen gleichkommt; anderseits verhindert eine offene Schachttüre zwar eine Bewegung der Kabine, aber wenn sich die Kabine nicht bei der gerade offenen Schachttüre befindet, so besteht dennoch die Gefahr eines Absturzes durch die offene. Schachttüre.
- Intelligente bzw. situationsgerechte Reaktionen, zum Beispiel bei offenem Sicherheitskreis, sind nicht möglich; insbesondere kann nicht vermieden werden, dass Personen in der Liftkabine ungewollt eingeschlossen werden.
- Das Überwachungssystem erlaubt keine spezifische Diagnose; das heisst, dass bei offenem Sicherheitskreis nur festgestellt wird, dass mindestens ein Sicherheitskontakt und damit mindestens ein Riegel bzw. mindestens eine Schachttüre offen ist. Es kann aber nicht festgestellt werden, welcher bzw. welche Sicherheitskontakte geöffnet sind.
- Eine vorsorgliche Wartung ist nicht möglich, da keine Anzeige über den Zustand der Sicherheitskontakte erfolgt; es ist also nicht möglich, das Aufzugssystem vorausschauend zu warten und abgenützte Sicherheitskontakte rechtzeitig aber zu einem Zeitpunkt, in dem das Aufzugssystem problemlos stillgelegt werden kann, zu ersetzen, es sei denn im Rahmen einer periodischen Revision, wobei aber in vielen Fällen eine an sich nicht notwendige Ausserbetriebssetzung des Aufzugssystems erfolgt.
- Die Verfügbarkeit des Aufzuges wird eingeschränkt, da ein offener Sicherheitskontakt immer eine Ausserbetriebssetzung des Aufzugssystems zur Folge hat, auch wenn eine andere Lösung, zum Beispiel Absperrung des Zugangsbereiches zu einer nicht-schliessbaren Schachttüre, möglich wäre.
- Each safety circuit has inherent problems; These include the length of the connections, the voltage drop in the safety circuit and the relatively high assembly costs.
- The individual safety contacts are relatively prone to failure; Therefore, it often comes to unnecessary emergency stops the elevator system.
- Despite a monitoring system with a safety circuit, unsafe or dangerous situations can not be avoided; On the one hand, the safety contacts can be bridged relatively easily individually or together, which is practically equivalent to the absence of safety precautions; On the other hand, an open shaft door prevents movement of the car, but if the car is not in the shaft door that is currently open, there is still the risk of falling through the open. Shaft door.
- Intelligent or situational reactions, for example with an open safety circuit, are not possible; in particular, it can not be avoided that persons in the elevator cabin are inadvertently trapped.
- The monitoring system does not allow a specific diagnosis; This means that when the safety circuit is open it is only ascertained that at least one safety contact and thus at least one bolt or at least one shaft door is open. It can not be determined which safety contacts are open.
- A precautionary maintenance is not possible because there is no indication of the condition of the safety contacts; Thus, it is not possible to anticipate the elevator system and replace worn security contacts in a timely manner but at a time when the elevator system can be easily shut down, unless in the context of a periodic revision, but in many cases it is not necessary shutdown of the elevator system takes place.
- The availability of the elevator is limited because an open safety contact always has a shutdown of the elevator system result, even if another solution, for example, blocking the access area to a non-closable shaft door, would be possible.
Die Aufgabe der Erfindung wird somit darin gesehen, ein verbessertes Überwachungssystem der eingangs genannten Art aufzuzeigen, mit welchem die Nachteile des Standes der Technik vermieden oder mindestens stark reduziert werden können. Insbesondere soll die Erfassung des Zustandes der Schacht- bzw. Kabinentüren durch die Sensormittel analysierbar und diagnosefähig sein. Ausserdem sollen sich graduelle Verschlechterungen einzelner Subsysteme erkennen lassen, so dass rechtzeitig ein präventiver Unterhalt eingeleitet werden kann.The object of the invention is thus seen to show an improved monitoring system of the type mentioned, with which the disadvantages of the prior art can be avoided or at least greatly reduced. In particular, the detection of the state of the manhole or car doors by the sensor means should be analyzable and diagnosable. In addition, gradual deteriorations of individual subsystems should be discernible so that preventive maintenance can be initiated in good time.
Vorzugsweise soll das neue Überwachungssystem so wirken, dass Störungen oder Ausfälle einzelner Kontakte nicht zu einem Ausfall des gesamten Aufzugssystems führen.Preferably, the new monitoring system should act in such a way that malfunctions or failures of individual contacts do not lead to a failure of the entire elevator system.
Die Lösung der Aufgabe erfolgt durch die Merkmale des Anspruchs 1.The object is achieved by the features of claim 1.
Vorteilhafte Weiterbildungen des erfindungsgemässen Überwachungssystems sind durch die abhängigen Patentansprüche 2 bis 10 definiert.Advantageous developments of the inventive monitoring system are defined by the dependent claims 2 to 10.
Bei dem erfindungsgemässen Überwachungssystem für ein Aufzugssystem weisen die Schachttüren und/oder die Kabinentüren Sensormittel auf, mit welchen ihr Zustand, das heisst das Einnehmen ihrer Offen- oder Schliessstellung, detektiert wird. Das Überwachungssystem weist ferner ein mit den Sensormitteln verbundenes Auswertesystem auf, welches die von den Sensormitteln gelieferten Signale auswertet. Diese Auswertung erfolgt in kurzen Zeitabständen und erlaubt es, den Zustand der überwachten Schacht- oder Kabinentüre zu erfassen; ebenso können zeitliche Änderungen der Signalcharakteristik erfasst werden.In the monitoring system according to the invention for an elevator system, the shaft doors and / or the car doors have sensor means with which their condition, that is to say the assumption of their open or closed position, is detected. The monitoring system further has an evaluation system connected to the sensor means, which evaluates the signals supplied by the sensor means. This evaluation takes place at short intervals and makes it possible to detect the condition of the monitored manhole or car door; as well temporal changes of the signal characteristic can be detected.
Die mit dem erfindungsgemässen Überwachungssystem erzielten Vorteile sind die Folgenden:The advantages achieved with the monitoring system according to the invention are the following:
Anders als bei der Lösung mit einem Sicherheitskreis lässt sich nicht nur feststellen, dass ein Fehler aufgetreten ist, sondern die Auswerteeinheit kann aus den Signalen der Sensormittel einen Fehler auch lokalisieren und somit ist eine den Fehler betreffende Analyse und Diagnose möglich. Durch die Auswertung der Signalcharakteristiken der von den Sensormitteln gelieferten Signale können ausserdem zeitliche Qualitätsverminderungen detektiert werden, so dass vorsorgliche Unterhaltsmassnahmen eingeleitet werden können.Unlike the solution with a safety circuit, not only can it be determined that an error has occurred, but the evaluation unit can also locate an error from the signals of the sensor means and thus an analysis and diagnosis relating to the error is possible. By evaluating the signal characteristics of the Sensor signals supplied can also be detected temporal quality reductions, so that precautionary maintenance measures can be initiated.
Vorzugsweise ist das Auswertesystem so ausgebildet, dass es insbesondere einen Fehler erkennen und lokalisieren kann und/oder einen Defekt eines Sensormittels feststellen kann und/oder feststellen kann, ob Sensormittel verschlissen sind und/oder Fehlmanipulationen an der einem bestimmten Sensormittel zugehörigen Schachttüre erkennen kann und/oder die Notwendigkeit einer Wartung erkennen kann und/oder eine Wartung empfehlen kann.Preferably, the evaluation system is designed such that it can detect and localize a fault in particular and / or determine a defect of a sensor means and / or determine whether sensor means are worn and / or can detect incorrect manipulation of the shaft door associated with a particular sensor means and / or or can detect the need for maintenance and / or recommend servicing.
In einer ersten Ausbildung kann pro Stockwerk ein Auswertesystem vorgesehen sein; dieses Auswertesystem ist vorzugsweise über einen Datenbus mit einer Aufzugssteuerung verbunden.In a first embodiment, an evaluation system can be provided per floor; This evaluation system is preferably connected via a data bus with an elevator control.
In einer zweiten Ausführung kann für mehrere Stockwerke ein gemeinsames Auswertesystem vorgesehen sein; auch ein solches Auswertesystem ist vorzugsweise über einen Datenbus mit einer Aufzugssteuerung verbunden.In a second embodiment, a common evaluation system can be provided for several floors; Such an evaluation system is preferably connected via a data bus to an elevator control.
Bei einem bevorzugten Überwachungssystem weist das Auswertesystem einen lokalen Prozessor auf, um die Signale der Sensormittel auszuwerten.In a preferred monitoring system, the evaluation system has a local processor to evaluate the signals of the sensor means.
Eine besonders günstige Anordnung erhält man, wenn das Auswertesystem des neuen überwachungssystems auch andere Signale bzw. Daten der Aufzugsanlage, das heisst andere Liftgrössen, verarbeiten kann. Auf diese Weise kann zum Beispiel eine Redundanz im Aufzugssystem genutzt werden, indem zum Beispiel einerseits ein Sensormittel die Schliessstellung einer Kabinentüre anzeigt und anderseits ein Inkrementalgeber des Türantriebs ebenfalls die Schliessstellung der Kabinentüre erfasst.A particularly favorable arrangement is obtained if the evaluation system of the new monitoring system can also process other signals or data of the elevator installation, ie other lift sizes. In this way, for example, a redundancy in the elevator system can be used, in that, on the one hand, a sensor means indicates the closed position of a car door and, on the other hand, an incremental encoder of the door drive also detects the closed position of the car door.
Am vorteilhaftesten ist es, wenn das Auswertesystem so konzipiert ist, dass es auch die zeitlichen Veränderungen der Signalcharakteristik, das heisst der Charakteristik der auszuwertenden Signale, erfasst; dadurch lassen sich abnormales Prellverhalten von Sensormitteln oder abnormale dynamische Signalverläufe und/oder abnormale statische Zustände, zum Beispiel ein Spannungsabfall, an Sensormitteln erkennen. Damit ist es möglich, Diagnosen auf der Ebene einzelner Komponenten durchzuführen und eine vorsorgliche Wartung einzelner Sensoren in die Wege zu leiten.It is most advantageous if the evaluation system is designed so that it also detects the temporal changes in the signal characteristic, ie the characteristic of the signals to be evaluated; This makes it possible to detect abnormal bounce behavior of sensor means or abnormal dynamic waveforms and / or abnormal static conditions, for example a voltage drop, on sensor means. This makes it possible to perform diagnostics at the level of individual components and to initiate the precautionary maintenance of individual sensors.
Es ist empfehlenswert, ein Sensormittel zu wählen, das mindestens zwei redundante Sensoren umfasst; dadurch kann verhindert werden, dass der Ausfall eines einzigen Sensors zu einem Ausfall des gesamten Aufzugssystems führt, das mit dem neuen Überwachungssystem ausgestattet ist; zumindest kurzfristig kann das Aufzugssystem in Betrieb bleiben, wenn ein Sensor eines Sensormittels nicht mehr funktionsfähig ist.It is advisable to choose a sensor means comprising at least two redundant sensors; thereby, the failure of a single sensor can be prevented from leading to failure of the entire elevator system equipped with the new monitoring system; At least in the short term, the elevator system can remain in operation if a sensor of a sensor means is no longer functional.
Als besonders günstig hat sich ein Sensormittel erwiesen, das zwei Sensoren umfasst, die so im Bereich einer Schachttüre oder der Kabinentüre angeordnet sind, dass während des Schliessens oder Öffnens, oder während der Änderung des Zustandes der Schachttüre bzw. der Kabinentüre, erst einer der beiden Sensoren und später zeitlich versetzt der zweite der beiden Sensoren ein Signal liefert. Es kann zum Beispiel vorgesehen sein, dass ein erster Sensor ein Signal abgibt, wenn eine Schacht- oder Kabinentüre bis auf einen restlichen Türspalt, etwa 10 mm, geschlossen ist, und dass der zweite Sensor ein Signal abgibt, wenn die Schacht- oder Kabinentüre vollständig geschlossen und verriegelt ist. Auf diese Weise lässt sich erkennen, ob eine Schacht- oder Kabinentüre vollständig schliesst oder wegen Verschmutzung, mechanischer Abnutzung, Deformation nicht mehr vollständig schliesst. Auf diese Weise erhält man eine Diagnose auf der Ebene der Subsysteme der Schacht- bzw. Kabinentüren. Das Überwachungssystem kann so konzipiert sein, dass kein Betriebsunterbruch erfolgt, wenn der restliche Türspalt einen Grenzwert nicht überschreitet, dass aber gleichzeitig ein Serviceruf generiert wird.To be particularly favorable, a sensor means has been found which comprises two sensors which are arranged in the region of a shaft door or the car door, that during the closing or opening, or during the change of the state of the shaft door or the car door, only one of the two Sensors and later offset the second time the two sensors provides a signal. It may for example be provided that a first sensor emits a signal when a manhole or car door is closed except for a remaining door gap, about 10 mm, and that the second sensor emits a signal when the manhole or car door completely closed and locked. In this way it can be seen whether a manhole or car door completely closes or due to pollution, mechanical wear, deformation no longer completely closes. In this way one obtains a diagnosis at the level of the subsystems of the shaft or car doors. The monitoring system can be designed so that there is no interruption of operation if the remaining door gap does not exceed a limit value, but at the same time a service call is generated.
Nach dem Auswerten der Signale und ggfs. der Signalcharakteristiken löst das Auswertesystem vorteilhafterweise mindestens eine vordefinierte Reaktion aus, insbesondere die Lokalisierung eines Fehlers und/oder die Generierung eines Servicerufes und/oder das Speichern von Diagnoseinformation und/oder das Stoppen der Aufzugskabine oder die Ausführung einer andern situationsabhängigen Reaktion falls eine Schachttüre als offen erkannt wurde.After evaluating the signals and optionally the signal characteristics, the evaluation system advantageously triggers at least one predefined reaction, in particular the localization of an error and / or the generation of a service call and / or the storage of diagnostic information and / or the stopping of the elevator car or the execution of a service call other situation-dependent reaction if a shaft door was recognized as open.
In einer bevorzugten Ausbildung des neuen Überwachungssystems ist pro Kabinentüre oder mindestens pro Kabine ein Auswertesystem vorhanden, welches vorzugsweise über einen Datenbus mit einer Aufzugsteuerung in Verbindung steht.In a preferred embodiment of the new monitoring system, there is one evaluation system per car door or at least one car, which is preferably connected to an elevator control via a data bus.
Im Folgenden wird die Erfindung anhand von Ausführungsbeispielen und mit Bezug auf die Zeichnung ausführlich beschrieben. Es zeigen:
- Fig. 1
- eine Schacht- oder Kabinentüre eines Aufzugssystems mit einem ersten Überwachungssystem nach der Erfindung, in stark vereinfachter schematisierter Darstellung; und
- Fig. 2
- zwei Schacht- oder Kabinentüren eines Aufzugssystems mit einem zweiten Überwachungssystem nach der Erfindung, in gleicher Darstellung wie Fig. 1.
- Fig. 1
- a shaft or car door of an elevator system with a first monitoring system according to the invention, in a highly simplified schematic representation; and
- Fig. 2
- two manhole or car doors of an elevator system with a second monitoring system according to the invention, in the same representation as FIG. 1.
Fig. 1 zeigt eine Anordnung mit dezentraler Auswertung. Ein nicht weiter dargestelltes Aufzugssystem weist eine Türe 10 auf, bei welcher es sich um eine Schachttüre oder eine Kabinentüre handeln kann. Dieser Türe 10 sind Sensormittel, nämlich ein erstes Sensormittel 12 und ein zweites Sensormittel 14, zugeordnet. Jedes der Sensormittel 12, 14 besitzt einen oder mehrere Sensoren (nicht gezeigt), die im vorliegenden Ausführungsbeispiel als Schalter ausgebildet und über Türelemente 11 betätigbar sind. Die Sensormittel 12, 14 sind über Verbindungen 16, 18 mit einem Auswertesystem 20 verbunden, welches nur für die Auswertung der Signale der Türe 10 bestimmt ist. Das Auswertesystem 20 ist über einen Busknoten 22 an einen Datenbus 24 angeschlossen, der mit einer zentralen Steuerung 26 verbunden ist. Zusätzlich zu den von den Sensormitteln 12, 14 gelieferten Signalen sind über weitere Verbindungen 30, 32 andere Signale, das heisst andere Liftgrössen, auf den Busknoten 22 geschaltet; auch eine Aufschaltung auf das Auswertesystem oder einen nicht dargestellten integrierten Rechner wäre möglich. Das Auswertesystem 20 kann auch im Busknoten 22 integriert sein.Fig. 1 shows an arrangement with decentralized evaluation. A not shown elevator system has a
Fig. 2 zeigt eine Anordnung mit zentraler Auswertung. Vom nicht weiter dargestellten Aufzugssystem ist eine erste Türe 10 und eine weitere, ebenfalls mit 10 bezeichnete zweite Türe dargestellt. Jeder der Türen 10 sind Sensormittel, nämlich ein erstes Sensormittel 12 und ein zweites Sensormittel 14, zugeordnet. Jedes der Sensormittel 12, 14 besitzt einen oder mehrere Sensoren (nicht gezeigt), die im vorliegenden Ausführungsbeispiel als Schalter ausgebildet und über Türelemente 11 betätigbar sind. Die Sensormittel 12, 14 der Türen 10 sind über je zwei Verbindungen 16, 18 mit dem Auswertesystem 20 verbunden, welches für die Auswertung der Signale der beiden Türen 10 bestimmt ist. Das Auswertesystem 20 ist an einen Datenbus 24 angeschlossen, der mit einer Steuerung 26 verbunden ist. Zusätzlich zu den von den Sensormitteln 12, 14 gelieferten Signalen sind über weitere Verbindungen 30, 32 andere Signale, das heisst andere Liftgrössen, auf das Auswertesystem 20 geschaltet; auch eine Aufschaltung auf einen nicht dargestellten integrierten Rechner wäre möglich.Fig. 2 shows an arrangement with central evaluation. From the elevator system, not shown, a
Die Wirkungsweise der oben beschriebenen Anordnungen der Fig. 1 und 2 ist im Wesentlichen gleich. Die als Schalter ausgebildeten Sensoren der Sensormittel 12, 14 wirken mit den Türelementen 11 der Türen 10 zusammen. Die von den Sensormitteln 12, 14 generierten Signale beschreiben die Schaltzustände der entsprechenden Schalter, welche die Sensoren der Sensormittel 12, 14 bilden; diese Schaltzustände entsprechen den Zuständen bzw. Stellungen der Türe 10, das heisst, sie zeigen jeweils an, ob die Türe 10 offen oder geschlossen ist. Im Weiteren ergeben sich aus den von den Sensoren ausgehenden Signalen Signalcharakteristiken. Die Signale und Signalcharakteristiken werden im Auswertesystem 20 ausgewertet. Aufgrund der Ergebnisse der Auswertung werden geeignete Reaktionen eingeleitet; solche Massnahmen sind beispielsweise die Generierung eines vorsorglichen Servicerufes, die Speicherung von Diagnoseinformation oder die Stilllegung des Aufzugssystems. Die Auswertung kann gemäss Fig. 1 pro Türe, also dezentral, oder gemäss Fig. 2 für mehrere Türen, also zentral, erfolgen.The operation of the above-described arrangements of Figs. 1 and 2 is substantially the same. The trained as a switch sensors of the sensor means 12, 14 cooperate with the
Beim Einsatz eines Datenbuses kann die Auswertung der Signale auch von den Busknoten übernommen werden. Die Busknoten bilden in diesem Fall also auch die Auswertesysteme. An die Zentralsteuerung wird dann zum Beispiel keine qualifizierte Angabe oder Diagnose sondern nur ein Status übertragen, etwa die Mitteilung ,Schalter geschlossen/Diagnose in Ordnung'.When using a data bus, the evaluation of the signals can also be taken over by the bus nodes. In this case, the bus nodes also form the evaluation systems. For example, no qualified information or diagnosis is transmitted to the central controller, but only one status is transmitted, for example the message "switch closed / diagnosis in order".
Grundsätzlich ist es auch möglich, auf einen Datenbus zu verzichten und jeden Sensor einzeln direkt mit der zentralen Steuereinheit zu verdrahten; hierbei ist der Montageaufwand aber bedeutend grösser.In principle, it is also possible to dispense with a data bus and to wire each sensor individually directly to the central control unit; However, the installation effort is significantly greater.
Claims (10)
- Monitoring system for a lift installation, for monitoring a shaft door (10), which closes the access to a lift shaft, or a cage door (10) of a lift cage, wherein the shaft door (10) or the cage door (10) comprises at least one sensor means (12, 14) for monitoring the state of the shaft door (10) or of the cage door (10) and an evaluating system (20) for evaluating the signals made available by the sensor means (12, 14), wherein the sensor means (12, 14) are connected with the evaluating system (20), characterised in that the evaluating system (20) evaluates signals of the sensor means (12, 14) at short intervals in time in order to detect the state of the monitored shaft door (10) or the monitored cage door (10) and changes over time of a signal characteristic of the signals of the sensor means (12, 14).
- Monitoring system according to claim 1, characterised in that the evaluating system (20) can reliably detect at least one of the following states:i. recognition and localisation of a fault,ii. sensor means (12, 14) defective, failed,iii. sensor means (12, 14) worn,iv. faulty manipulation of the shaft door (10) in the region of which the sensor means (12, 14) is disposed,v. maintenance necessary,vi. maintenance recommended.
- Monitoring system according to claim 1 or 2, characterised in that an evaluating system (20) which is preferably connected with a lift control (26) by way of a data bus (24) is present for each storey or for several storeys in common.
- Monitoring system according to claim 2 or 3, characterised in that the evaluating system (20) is integrated in a bus node of the data bus (24) and/or has a local processor in order to undertake evaluation of the signals of the sensor means (12, 14).
- Monitoring system according to one of claims 1 to 4, characterised in that the evaluating system (20) also processes, for example signals of an incremental position transmitter at a door drive.
- Monitoring system according to one of claims 1 to 5, characterised in that the evaluating system (20) detects the changes over time of the signal characteristic in order to recognise abnormal bounce behaviour of the sensor means (12, 14) or abnormal dynamic signal courses, for example the bounce behaviour of the sensor means (12, 14), and/or abnormal static signal states, for example a voltage drop, at the sensor means (12, 14).
- Monitoring system according to one of claims 1 to 6, characterised in that the sensor means (12, 14) comprises two or more redundant sensors so that a failure of one of the sensors does not lead to a failure of the entire lift installation equipped with the monitoring system (20).
- Monitoring system according to one of claims 1 to 7, characterised in that the sensor means (12, 14) in each instance comprises two sensors which are arranged in the region of the shaft door (10) and/or the cage door in such a manner that during closing of the shaft door (10) or the cage door (10) initially one of the two sensors and then, displaced in time, the second of the two sensors makes available a signal.
- Monitoring system according to one of claims 1 to 8, characterised in that the evaluating system (20) evaluates the signals and the signal characteristic so as to be able to trigger one or more of the following predefined reactions:- localisation of a fault;- triggering of a service call;- storage of diagnostic information;- if staying open of a shaft door was recognised, stopping lift cage or executing a situation-dependent reaction.
- Monitoring system according to one of claims 1 to 9, characterised in that one evaluating system (20) per cage door (10) or at least one evaluating system per cage is present, wherein the evaluating system (20) is preferably connected with a lift control (26) by way of a data bus (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02754114A EP1427660B1 (en) | 2001-09-18 | 2002-09-11 | Monitoring system |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01810904 | 2001-09-18 | ||
| EP01810904 | 2001-09-18 | ||
| PCT/CH2002/000499 WO2003024854A1 (en) | 2001-09-18 | 2002-09-11 | Monitoring system |
| EP02754114A EP1427660B1 (en) | 2001-09-18 | 2002-09-11 | Monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1427660A1 EP1427660A1 (en) | 2004-06-16 |
| EP1427660B1 true EP1427660B1 (en) | 2006-03-29 |
Family
ID=8184143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02754114A Expired - Lifetime EP1427660B1 (en) | 2001-09-18 | 2002-09-11 | Monitoring system |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6988594B2 (en) |
| EP (1) | EP1427660B1 (en) |
| JP (1) | JP2005502566A (en) |
| CN (1) | CN1314574C (en) |
| AT (1) | ATE321722T1 (en) |
| CA (1) | CA2457551C (en) |
| DE (1) | DE50206243D1 (en) |
| HK (1) | HK1066780A1 (en) |
| WO (1) | WO2003024854A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10233053B2 (en) | 2017-01-25 | 2019-03-19 | Otis Elevator Company | Automatic door switch inspection |
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| KR100953851B1 (en) * | 2001-09-18 | 2010-04-20 | 인벤티오 아게 | Safety circuit for elevator doors |
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| SG112018A1 (en) * | 2003-11-11 | 2005-06-29 | Inventio Ag | Elevator installation and monitoring system for an elevator installation |
| CN100417582C (en) * | 2005-03-24 | 2008-09-10 | 陕西亿丰电子工程有限公司 | Lift running safety recall estimating system |
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2002
- 2002-09-11 EP EP02754114A patent/EP1427660B1/en not_active Expired - Lifetime
- 2002-09-11 DE DE50206243T patent/DE50206243D1/en not_active Expired - Lifetime
- 2002-09-11 CN CNB028160681A patent/CN1314574C/en not_active Expired - Lifetime
- 2002-09-11 AT AT02754114T patent/ATE321722T1/en active
- 2002-09-11 WO PCT/CH2002/000499 patent/WO2003024854A1/en active IP Right Grant
- 2002-09-11 CA CA2457551A patent/CA2457551C/en not_active Expired - Lifetime
- 2002-09-11 JP JP2003528712A patent/JP2005502566A/en active Pending
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2004
- 2004-03-17 US US10/802,602 patent/US6988594B2/en not_active Expired - Lifetime
- 2004-12-08 HK HK04109705A patent/HK1066780A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10233053B2 (en) | 2017-01-25 | 2019-03-19 | Otis Elevator Company | Automatic door switch inspection |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE321722T1 (en) | 2006-04-15 |
| US6988594B2 (en) | 2006-01-24 |
| CN1543425A (en) | 2004-11-03 |
| WO2003024854A1 (en) | 2003-03-27 |
| HK1066780A1 (en) | 2005-04-01 |
| DE50206243D1 (en) | 2006-05-18 |
| US20050029055A1 (en) | 2005-02-10 |
| JP2005502566A (en) | 2005-01-27 |
| EP1427660A1 (en) | 2004-06-16 |
| CN1314574C (en) | 2007-05-09 |
| CA2457551A1 (en) | 2003-03-27 |
| CA2457551C (en) | 2010-11-23 |
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