EP3704048A1 - Dispositif de surveillance de sécurité destiné à surveiller des états relatifs à la sécurité dans une installation de transport de personnes ainsi que procédé destiné à faire fonctionner ce dernier - Google Patents

Dispositif de surveillance de sécurité destiné à surveiller des états relatifs à la sécurité dans une installation de transport de personnes ainsi que procédé destiné à faire fonctionner ce dernier

Info

Publication number
EP3704048A1
EP3704048A1 EP18779406.0A EP18779406A EP3704048A1 EP 3704048 A1 EP3704048 A1 EP 3704048A1 EP 18779406 A EP18779406 A EP 18779406A EP 3704048 A1 EP3704048 A1 EP 3704048A1
Authority
EP
European Patent Office
Prior art keywords
safety
relay
monitoring
state
contact
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.)
Granted
Application number
EP18779406.0A
Other languages
German (de)
English (en)
Other versions
EP3704048B1 (fr
Inventor
Eric Birrer
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.)
Inventio AG
Original Assignee
Inventio AG
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 Inventio AG filed Critical Inventio AG
Publication of EP3704048A1 publication Critical patent/EP3704048A1/fr
Application granted granted Critical
Publication of EP3704048B1 publication Critical patent/EP3704048B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/46—Adaptations of switches or switchgear
    • B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B29/00—Safety devices of escalators or moving walkways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/03—Elevator

Definitions

  • Safety monitoring device for monitoring safety-relevant conditions in a passenger conveyor system and method for operating the same
  • the present invention relates to a security monitoring device for monitoring security-relevant conditions in a passenger transport system. Furthermore, the invention relates to a passenger conveyor system with such a safety monitoring device. Moreover, the invention relates to a method for
  • Passenger conveyors in the form of elevators, escalators or moving walkways serve to transport persons within buildings.
  • the passenger conveyor system is permanently installed in the building.
  • an elevator car can be moved vertically between different floors.
  • Escalators or moving walkways can carry passengers standing on tread units along sloped or horizontal driveways.
  • Components are monitored in order then, for example, then operate other components of the passenger conveyor system suitable and safe or to be able to control.
  • sensors and / or switches are usually provided at the corresponding components or at different points of the passenger conveyor system. Signals from such sensors or switches can be made available to a control of the passenger conveyor system so that it can take into account the signals when controlling functions of the passenger conveyor system and thus can bring about safe operation of the passenger conveyor system.
  • a so-called safety monitoring chain is conventionally used to ensure safe operation of the elevator.
  • Security monitoring chain includes a variety of sensors and / or switches, with the help of which information about current safety-related conditions of components of the elevator can be determined.
  • a door switch is typically provided on a car door and on each of a plurality of shaft doors, which is closed as long as the respective door is closed.
  • the several door switches are inside the
  • Safety monitoring chain connected in series so that the safety monitoring chain as a whole is closed only when each of the door switches is closed.
  • An elevator control connected to the security monitoring chain may or may in this case relocate an elevator car within an elevator shaft only if the safety monitoring chain as a whole is closed and it can therefore be assumed that all the cabin and shaft doors are currently closed.
  • the security monitoring chain can additionally comprise further switches and / or sensors.
  • a so-called Kabinenendotendschalter may be provided in the elevator, which is normally closed and which is operated opening, as soon as the elevator car beyond a permissible travel, for example, in the direction of a lift shaft ceiling or in the direction of
  • Elevator shaft floor is relocated.
  • a sensor system may be provided, which allows the functionality of the KNE switch by using the sensor, a current position of the elevator car can be determined within the elevator shaft and can be detected when the elevator car is moved beyond the allowable travel and which then causes in that the security monitoring chain is interrupted. This can ensure that the security Monitoring chain is interrupted as soon as the elevator car leaves its permissible travel.
  • the switch can be closed and thus the area of the safety monitoring chain comprising the door switches can be bypassed, as soon as it is e.g. is detected by means of a sensor that the elevator car is sufficiently close to a desired target position, i. for example less than 20cm or less than 10cm away from it.
  • a safety-relevant state can be detected directly with the aid of a switch and this switch can be integrated into the safety monitoring chain.
  • the safety-relevant state can be monitored, for example with a sensor.
  • the sensor system signals, which the
  • relays can be used as switches integrated into the security monitoring chain, which can be switched in the desired manner by means of control voltages generated suitably by the controller arrangement.
  • the controller arrangement and a relay arrangement is redundant.
  • the relay assembly includes two series-connected relays, both of which must be brought into closed states by the controller assembly so as to complete an associated switching state within the security monitoring chain.
  • An effort for implementing a security monitoring device can be considerable, in particular due to a large number of components and their interconnection.
  • a security monitoring device for monitoring security-relevant states in one
  • the safety monitoring device has a first and a second double contact relay and a first and a second control he on. Both double contact relays are configured, in each case controlled by a control voltage, to switch a first normally open contact and a second normally open contact as well as a feedback contact synchronously between an open and a closed relay state.
  • the two controls he are designed to determine each correlated with a safety-related state properties of the passenger conveyor system and to generate the control voltages for the first or the second double contact relay depending on the determined properties.
  • a first and a second safety monitoring switch arrangement is formed.
  • Safety monitoring switch arrangement is for monitoring a first safety-relevant state and for corresponding switching of a first
  • the second safety monitoring switch arrangement is configured to monitor a second safety-relevant state and to correspondingly switch a second switching state within the safety monitoring chain of the passenger conveyor system.
  • the first safety monitoring switch arrangement comprises the first normally open contact of the first double contact relay and, connected in series therewith, the first normally open contact of the second double contact relay.
  • the second safety monitoring switch arrangement comprises the second normally open contact of the first double contact relay and, connected in parallel therewith, the second normally open contact of the second double contact relay.
  • a passenger conveyor system which comprises a security monitoring device according to a
  • a method for monitoring a functionality of a security monitoring device according to a
  • the method comprises at least the following steps of the
  • Double contact relay is briefly switched to its open relay state and back to its closed relay state and that always at least one of the first and second double contact relay is in its closed relay state, and
  • a security monitoring device controller for determining correlated with the monitored condition properties within the passenger conveyor system and relays for opening or closing a contact within a security monitoring chain has.
  • a safety monitoring switch arrangement with one or more own controllers and relays is provided for each safety-relevant state to be monitored. Especially for monitoring
  • two relays are connected in series in a redundant manner. Accordingly, at least one controller and one relay, but in many cases two controllers and two relays, must be provided for each safety-related condition to be monitored.
  • double contact relays in a safety monitoring device instead of simple relays and to interconnect them in an advantageous manner and to be triggered by two controllers.
  • a control voltage applied to the relay in a control circuit can be used to open or close the relay as a switch.
  • the control voltage may cause a current through a coil, causing the coil
  • Magnetic field generates, which attracts or repels an anchor.
  • the armature moved in this way can then move arms of a working contact towards or away from each other. In a simple relay this is only a single
  • the double contact relay can thus not only a switch in a working circuit but two switches in two different working circuits controlled by the control voltage synchronized open or close each other.
  • Double contact relay may be provided a so-called feedback contact, which is moved synchronously with the two working contacts.
  • the feedback contact can be used, for example, to check whether the normally open contacts have been opened following the applied control voltage. Accordingly, it can be detected by monitoring the feedback contact, for example, if the double contact relay has a defect and no longer switches correctly. In particular, it can be recognized if adjacent arms of a work contact, for example, are unintentionally welded together or stick together and thus no longer open properly despite appropriately applied control voltage.
  • the two double contact relays provided therein can advantageously be connected in such a way that they form two safety monitoring switch arrangements, by means of which two different safety-relevant states can be monitored and associated switching states within the safety monitoring chain of the passenger conveyor system can be switched accordingly.
  • a desired redundancy can be achieved when switching the switching states without having to provide at least two separate relays for each switching state to be switched.
  • the two double contact relays can be so in the safety monitoring chain of
  • the first normally open contact of the first is to form the first safety monitoring switch assembly
  • Double contact relay connected in series with the first normally open contact of the second double contact relay.
  • the second normally open contact of the first double contact relay and the second normally open contact of the second double contact relay are connected in parallel with one another.
  • the first safety monitoring switch arrangement is only completely closed when both series-connected first working contacts of the two double contact relays are closed, i. when both control he the two double contact relays to close.
  • the second safety monitoring switch arrangement is already closed when only one of the second normally open contacts connected in parallel to one another is closed, i. when at least one of the double contact relays is driven by one of the controllers to close, and only opened when both second normally open contacts of the two
  • the security monitoring device is arranged to take into account that the monitoring of the first safety-relevant state requires a higher safety integrity level than the monitoring of the second safety-relevant state.
  • the special circuit proposed herein of the two double contact relays can be advantageously used in particular in a constellation in which two different safety-related conditions are to be monitored by means of the safety monitoring device within the passenger conveyor, which differ significantly in terms of their safety integrity level.
  • the first safety monitoring switch arrangement with the two series-connected first working contacts of the first and second double contact relay can guarantee a higher level of safety integrity than the second safety monitoring switch arrangement in which the two second working contacts of both double contact relays are connected in parallel.
  • Safety Integrity Level is a term used in the field of functional safety, such as that described in international standard IEC 62508 / IEC61511.
  • Safety Integrity Level is used to assess electrical, electronic or programmable electronic systems for their reliability
  • the desired level results in safety-related design principles that must be adhered to in order to minimize the risk of malfunctions.
  • four levels are distinguished from safety integrity levels SIL 1 to SIL4, with SIL4 representing the safest level.
  • the safety monitoring device can be set up to take into account that the monitoring of the second safety-relevant state requires a safety integrity level SIL1 and monitoring of the first safety-relevant state requires at least one safety-related state
  • the first safety monitoring switch arrangement used for monitoring the first safety-relevant state can be configured such that it fulfills its monitoring function to meet the higher requirements of a
  • Safety Integrity Level SIL2 or even SIL3 can perform accordingly, whereas the second safety monitoring switch assembly used to monitor the second safety-related condition can be configured so that their monitoring function only the minor requirements of
  • the first safety-relevant state can specify whether parts of the safety monitoring chain which monitor closing states of doors of the passenger conveyor system may be temporarily short-circuited. In this case, by closing switching the first switching state, the parts of
  • the first safety-relevant state monitored by the first safety monitoring switch arrangement may contain information as to whether, for example, there are currently conditions in which the actual closed states of the car door and the shaft doors may be temporarily ignored and
  • Elevator cabin may be moved, for example, despite the car door or shaft door open.
  • a safety-related condition may exist when the car is very close (e.g., ⁇ 20 cm) at a target position, i. for example, at a floor stop, and the respective door may already be opened before the target position is actually reached.
  • This can be detected, for example, by an analysis of the current position of the elevator car within the elevator shaft.
  • the information about the current position of the car can be interpreted as indicating a safety-relevant state in which the closing states of the doors of the passenger conveyor may be temporarily ignored and thus parts of the safety monitoring chain which monitor these closed states may be temporarily short-circuited.
  • the first and second controllers can appropriately control the two double contact relays so that both double contact relays are in place pass closed relay state.
  • the two first normally open contacts of the two double contact relays are then closed so that, overall, a closed state results for their series connection as part of the first safety monitoring switch arrangement.
  • the first safety monitoring switch assembly may close a circuit that is parallel to the part of the safety monitoring chain that monitors the closing states of the doors of the personal request system, and thus may temporarily short-circuit the monitoring of the doors in the form of a UET contact such as in a bypass.
  • the second safety-relevant state can indicate whether an elevator car has been moved beyond a permissible travel range.
  • the security monitoring chain can be interrupted by opening the second switching state.
  • the second safety-relevant state monitored by the second safety monitoring switch arrangement can include information about the current position of the elevator car, so that it is possible to determine whether the elevator car is currently within its permissible travel range, i. for example, between a highest permissible end position and a lowest permissible one
  • the first and second controls can suitably control the two double contact relays so that both double contact relays switch to their open relay state.
  • the two second working contacts of the two double contact relays are then both open, so that there is also an overall open state for the parallel connection in the context of the second safety monitoring switch arrangement.
  • the second safety monitoring switch arrangement for example, if it is connected in series with a remainder of the safety monitoring chain of the passenger conveyor, act as an open switch and thus the safety monitoring chain temporarily interrupt.
  • operation of the elevator or, in particular, a further method of the elevator car beyond a respective end position is prevented.
  • the security monitoring device furthermore has a plurality of series-connected third security monitoring switch arrangements for monitoring third safety-relevant states.
  • the safety monitoring apparatus may comprise further safety monitor switch arrangements by means of which other tasks or functionalities can be implemented.
  • third safety monitoring switch arrangements can be, for example, door switches with which closing states of elevator doors, in particular of the car door or one of the shaft doors, can be monitored.
  • the several third safety monitoring switch arrangements can be connected in series, so that they can form part of the safety monitoring chain of the passenger conveyor systems.
  • each as a door switch it is ensured by a series connection that all doors, and thus all door switches, must be closed so that the said part of the safety monitoring chain as a whole is closed.
  • the first safety monitoring switch arrangement can be connected in parallel to the series of third safety monitoring switch arrangements and the second
  • Safety monitoring switch assemblies be interconnected.
  • the first safety monitoring switch arrangement with its two series-connected first working contacts of the two double contact relays can be connected in parallel to the series circuit of third safety monitoring switch arrangements. As soon as both first working contacts are closed in this case, ie As soon as the first switching state is closed, the first safety monitoring switch arrangement thus forms one of the series circuit of third
  • Safety monitoring switch assemblies parallel bypass and can thus bridge this series circuit controlled as a UET switch.
  • the second safety monitoring switch arrangement with its two parallel-connected second working contacts of the two double contact relays can be connected in series with the series circuit of third safety monitoring switch arrangements. As long as at least one of the double contact relay is closed, in this case also the second switching state remains closed, so that in total of the third
  • Safety switch monitoring arrangement formed part of the safety chain remains closed. This part of the safety chain is only opened when both double contact relays are open at the same time and thus also the second switching state is opened.
  • the second safety monitoring switch arrangement can thus, like a KNE switch, temporarily interrupt a safety chain.
  • the first and the second control can each be designed as a safety-related programmable logic controller.
  • SPS programmable logic controller
  • Controller - PLC is a device that can usually be used to control or regulate a plant or a machine.
  • Programmable controllers are increasingly replacing conventional hardwired, interconnected programmable controllers. It can be used to advantage that a PLC can be programmed on a digital basis and thus adapted to different tasks.
  • a PLC has inputs, outputs, an operating system and optionally an interface via which a user program can be loaded. The user program can program how the outputs in
  • the operating system can be kept up-to-date, for example, in the form of firmware.
  • a PLC can also perform other tasks such as, for example, visualization of data, design as Take over interface, for example in the form of a man-machine interface, an alarm and / or recording of operational messages (data logging).
  • a safety-related PLC is a special implementation of a PLC.
  • a safety-related PLC has a largely redundant configuration of its components and is usually designed so that the safety-related PLC can be switched off in the event of a component failure Conflict between redundant components is converted into a predetermined safe state.
  • a conventional PLC typically has a microprocessor executing a program, a non-volatile memory for storing the program, a volatile memory (RAM) for performing calculations, ports for data communication, and I / O ports, for example. to detect and control a plant or machine.
  • a safety-oriented PLC generally has at least two of the respective components which continuously monitor one another or are monitored by a so-called watch dog circuit.
  • the inputs of a conventional PLC typically do not have means for testing a functionality of an input circuit.
  • safety-related PLCs usually have an internal output circuit, which is assigned to each input and by means of which the respective input can be tested.
  • Safety-related PLC generally have a test point behind each of two safety switches, which are arranged behind a Ausgabetreib he, and a third test point downstream of the output driver.
  • Each of two safety switches is generally controlled by a single microprocessor. If a mistake in one of the two
  • Safety switch for example due to a fault in the switch or the Microprocessor or detected at the test point downstream of the output driver, the operating system of the safety-related PLC will automatically detect a system error and the safety-related PLC is transferred to a predefined state in which a system can be properly shut down, for example.
  • the two controllers Due to the design of the two controllers as safety-related PLCs, these are on the one hand suitable for being able to be adapted to different elevator types, for example as retrofit devices.
  • the controllers or the security monitoring device equipped therewith can guarantee a high degree of security for the passenger conveyor systems equipped therewith.
  • the security monitoring device may be configured to execute or control a method according to an embodiment of the third aspect of the invention.
  • the first and second controllers of the safety monitoring device which are designed as PLCs or safety-related PLCs, can be programmed in such a way that the control voltages generated by them are varied such that at least one of the two double contact relays is always in its closed relay state, but alternately one of the two both
  • Double contact relay is briefly put into its open relay state and back to its closed relay state. It is always monitored whether the associated feedback contact of a double contact relay follows the generated control voltage, i. whether the feedback contact indicates that relay state that was actually actuated by the associated controller, or whether, for example due to a malfunction within the double contact relay, an actual relay state does not correspond to the desired triggered relay state.
  • the two controllers can be used in the event that the feedback contacts of the two double contact relays do not indicate a relay state indicating the currently actuated relay state
  • Double contact relay to switch to its open relay state. In this way, the passenger conveyor system can be transferred to a largely secure state even in the event of a defect in the double contact relay of their safety monitoring device.
  • each of the two controllers monitors the feedback contacts of each of the two double contact relays.
  • the first and second controllers should not just be the first and second controllers
  • each controller should monitor the feedback contact of its associated dual contact relay as well as the feedback contact of the other double contact relay. In this way, a redundancy can be created, which further increases the security of the security monitoring device and, in particular, drastically increases the likelihood that malfunctions will be recognized correctly at their double contact relays.
  • the proposed method is carried out before, during or after each individual journey of the passenger transport installation.
  • Safety monitoring device is tested, in principle, at any time or triggered by any events are executed. However, it is considered advantageous to carry out the method at least when a ride is performed by the passenger transport system. This can ensure that the functionality of the safety monitoring device is checked sufficiently frequently. It should be noted that some of the possible features and advantages of the invention herein with respect to different embodiments of the
  • Safety monitoring device on the one hand and a method for monitoring their operability on the other hand are described.
  • One skilled in the art will recognize that the features may be suitably combined, adapted or replaced to provide further embodiments of the invention.
  • Fig. 1 shows a passenger transport system according to the invention.
  • Fig. 2 shows a security monitoring chain of an inventive
  • FIG 3 shows details of a security monitoring device according to the invention.
  • FIG. 4 a shows activated relay states and resulting switching states in the safety monitoring device according to the invention.
  • FIG. 4 b illustrates a variation of triggered relay states in the context of a method according to the invention for monitoring the functioning of a safety monitoring device.
  • Fig. 1 shows a passenger conveyor system 1 in the form of an elevator.
  • the elevator comprises an elevator car 5 and a counterweight 7, which can be displaced vertically within a lift shaft 3 by means of belts 9 driven by a drive machine 11. It can also be a brake 12 for braking the prime mover 11 and the direct braking of the elevator car 5 may be provided. An operation of the engine 11 and / or the brake 12 is controlled by an elevator controller 13.
  • the elevator controller 13 The elevator controller 13
  • Elevator controller 13 may e.g. the drive machine 1 1 controlled thereby supply electrical power from an electrical power source 15.
  • the elevator car 5 can be moved between different floors 17. At each floor 17 while a shaft door 19 is provided and to the elevator car 15, a car door 21 is provided.
  • a plurality of safety monitoring switch arrangements 23 are provided by means of which safety-relevant conditions within the passenger conveyor system 1 can be monitored.
  • door switches 25 are provided on each of the shaft doors 19 and on the car door 21, by means of which it can be monitored whether the respective shaft or cabin door 19, 21 is currently correctly closed or at least partially open. Further, in a pit area of the hoistway 3, a
  • Head presence switch 27 is provided, by means of which the presence and correct arrangement of a conductor 29 can be monitored. Both in the case of the door switch 25 and the conductor presence switch 27 speciallyüberwachungs- switch assemblies 23 may be provided, for example, as a simple, mechanically operated switch.
  • the passenger conveyor 1 can also be constructed more complex
  • Safety monitoring switch assemblies 23 have. For example, by means of a magnetic tape 33 extending vertically along the elevator shaft 3 and a magnetic tape reader 31 attached to the elevator car 5, an absolute position sensor 35 can be formed by means of which information about a current position of the elevator car 5 within the elevator shaft 3 can be obtained. Based on this information, safety-relevant states can then be monitored.
  • the elevator car 5 can be detected whether the elevator car 5 is currently opposite or at least near one of the shaft doors 19 and thus the car door 21 and / or the opposite shaft door 19 may be opened. Furthermore, based on this information, it is possible to detect whether the elevator car 5 is within an allowable travel or travel within the elevator shaft 3 or whether it has been inadvertently moved out of this permissible movement range 37.
  • Data or signals can be transmitted from the various safety monitoring switch arrangements 23 to a safety monitoring device 39, for example by wire or wireless.
  • safety monitoring switch arrangements 23 can be connected to one another, in particular connected to one another in series, in order to form parts of a safety monitoring chain 41.
  • the door switch 25 and the conductor presence switch 27 can be connected in series, so that the part of the security monitoring chain 41 formed thereby is closed as a whole only when all the door switch 25 and the conductor presence switch 27 are closed.
  • the security monitoring device 39 may communicate with or be part of the elevator controller 13 and may affect functions of the elevator controller 13.
  • the safety monitoring device 39 can actuate one or more main relay arrangements 43, for example one
  • Fig. 2 illustrates details of a security monitoring chain 41.
  • Safety monitor switch assemblies 23 (also referred to as “third safety monitor switch assemblies” hereinafter) in the form of door switches 25 and other safety monitor switch assemblies 23, for example in the form of a conductor presence switch 27 or the like, are connected in series.
  • K E switch Kabinenennotendschalter 28
  • the part of the security monitoring chain 41 formed by the series-connected safety monitoring switch arrangements 23 is connected in series with the main relay arrangement 43.
  • the main relay arrangement 43 comprises a first main double contact relay 45 having a coil 49, a first make contact 53, a second make contact 57 and a feedback contact 61 and a second main double contact relay 47 with a coil 51, a first normally open contact 55, a second normally open contact 59 and a feedback contact 63.
  • the main relay assembly 43 is hereby normal, ie when the coils 49, 51 are not energized, opened. Accordingly, the main relay assembly 43 includes an electrical connection between the power supplying means serially through the first normally open contacts 53, 55 of the first and second main double contact relays 45, 47
  • Elevator control 13 and the prime mover 11 only when their two coils 49, 51 are energized due to a completely closed security monitoring chain 41.
  • the brake 12 is energized and thus released only when the main relay assembly 43 closes a connection between a power source and the brake 12 due to a fully closed safety monitoring chain 41.
  • UET switch 65 In order to allow the car door 21 and / or one of the hoistway doors 19 to be opened under predetermined conditions, although the engine 11 displaces the elevator car 5, a so-called UET switch 65 is provided in parallel to the series connection of door switches 25. This UET switch 65 also forms a safety monitor switch assembly 23 and may only be closed when the predetermined conditions are met, i.
  • both the KNE switch 28 and the UET switch 65 have so far been implemented in a redundant manner, each with two simple relays.
  • the two simple relays were connected in series so that a switching state of the UET switch 65 was closed only when both relays were closed at the same time, ie, both relays were in their closed relay state.
  • FIG. 3 illustrates a security monitoring device 67 according to the invention, which can be implemented as forming part of a security monitoring chain 41 of a passenger conveyor system 1 in order to detect security-relevant conditions in the
  • the safety monitoring device 67 can in particular implement the functions of a KNE switch 28 and a UET switch 65.
  • the safety monitoring device 67 comprises a first double contact relay 69 and a second double contact relay 71.
  • Both double contact relays 69, 71 are designed as normally opened relays ("normally opened") and each have coils 73, 75 which, when supplied with a control voltage,
  • Each of the double contact relays 69, 71 also has a feedback contact 85, 87.
  • the safety monitoring device 67 further comprises a first and a second control he 89, 91.
  • the two control he 89, 91 are designed to
  • the two controls he 89, 91 can communicate with each other or control each other.
  • the control he 89, 91 may be designed as safety-related programmable logic controllers (SSPS).
  • Absolute position sensor 35 information about the current position of the elevator car 5 within the elevator shaft 3. From this information, the controllers 89, 91 on the one hand derive whether the elevator car 5 currently within the permissible
  • Traversing 37 is or whether she has left this.
  • the controllers 89, 91 can generate different control voltages for the two double contact relays 69, 71 in order to emulate the function of a KNE switch 28 with the safety monitoring device 67.
  • the inspectors 89, 91 can infer from the information whether the elevator car 5 is currently sufficiently close to a target floor position so that it seems permissible to temporarily bridge the part of the security surveillance chain 41 formed by the door switches 25 with the security monitoring device 67 to emulate the function of a UET switch.
  • the safety monitoring device 67 forms, with its double contact relays 69, 71 and its controllers 89, 91, safety monitoring switch arrangements 23 in the form of a first and a second safety monitoring switch arrangement 93, 95.
  • the first safety monitoring switch arrangement 93 comprises the first working contact 77 of the first double contact relay 69 and the first normally open contact 79 of the second double contact relay 71, which are connected to one another in series. With this first safety monitoring switch assembly 93 emulates the first safety monitoring switch assembly 93
  • the second safety monitoring switch arrangement 95 comprises the second working contact 81 of the first double contact relay 69 and the second working contact 83 of the second double contact relay 71, which are connected in parallel. With this second safety monitoring switch assembly 95 emulates the
  • Safety monitoring devices 67 the function of the KNE switch at a second output 99.
  • An actually assumed relay state of each of the double contact relays 69, 71 can be determined by the controllers 89, 91 via the respective feedback contact 85, 87 of the associated double contact relay 69, 71. As a result, it can be monitored whether a relay state controlled by a controller 89, 91 is in the assigned state
  • Double contact relay 69, 71 has led to the adoption of the desired relay state or whether a defect has prevented this.
  • Each of the two feedback contacts 85, 87 can transmit a feedback signal to each of the two controllers 89, 91.
  • Safety monitoring switch assembly 95 emulated KNE switching state only open (“open") when both double contact relays 69, 71 were driven by the two control 89, 91 in their open relay state ("0").
  • the function of the KNE switch 28 can be implemented via the second safety monitoring switch arrangement 95 at least with the safety integrity level of SIL1 sufficient for this purpose.
  • the normal operation of the safety monitoring devices 67 in which the safety-relevant conditions in the passenger conveyor 1 are monitored, is briefly interrupted.
  • each of the two double contact relays 69, 71 is actuated at least once for opening and subsequent closing.
  • the first safety monitoring switch arrangement 93 effecting the UET function is briefly opened and closed again, the second safety monitoring switch arrangement 95 effecting the KNE function always remains closed.
  • the entire security monitoring chain 41 remains during this
  • both control he 89, 91 generate control voltages such that both the first and the second double contact relay 69, 71 are switched to their open relay state. This can ensure that at least the extremely safety-critical UET function of the first safety monitoring switch arrangement 93 is reliably switched to its open state, so that a dangerous procedure of the elevator car 5 with open doors 19, 21 is avoided in any case.
  • Safety monitoring device 67 may be simpler than conventional ones

Abstract

L'invention concerne un dispositif de surveillance de sécurité (67) destiné à surveiller des états relatifs à la sécurité dans une installation de transport de personnes (1). Le dispositif comprend des premier et second relais de contact double (69, 71), qui commutent, en étant respectivement commandés par une tension de commande, un premier contact de travail (77, 79) et un second contact de travail (81, 83) ainsi qu'un contact de rétroaction (85, 87) de manière synchrone entre eux, entre des états de relais ouvert et fermé, ainsi qu'un premier et un second contrôleur (89, 91) respectivement destinés à déterminer des propriétés de l'installation de transport de personnes (1) qui sont corrélées à un état relatif à la sécurité et à générer les tensions de commande pour le premier ou pour le second relais de contact double (69, 71) en fonction des propriétés déterminées. Au moyen des deux relais de contact double (69, 71) et des deux contrôleurs (89, 91) sont formés un premier agencement de commutateur de surveillance de sécurité (93) destiné à surveiller un premier état relatif à la sécurité et ainsi à commuter un premier état de commutation au sein d'une chaîne de surveillance de sécurité (41) de l'installation de transport de personnes (1), et un second agencement de commutateur de surveillance de sécurité (95) destiné à surveiller un second état relatif à la sécurité et ainsi à commuter un second état de commutation au sein de la chaîne de surveillance de sécurité (41) de l'installation de transport de personnes (1). À cet effet, le premier agencement de commutateur de surveillance de sécurité (93) comporte le premier contact de travail (77) du premier relais de contact double (69) et le premier contact de travail (79), qui est monté en série avec ce dernier, du second relais de contact double (71). Le second agencement de commutateur de surveillance de sécurité (95) comporte le second contact de travail (81) du premier relais de contact double (69) et le second contact de travail (83), qui est monté en parallèle avec ce dernier, du second relais de contact double (71).
EP18779406.0A 2017-10-31 2018-10-05 Dispositif de surveillance de sécurité destiné à surveiller des conditions relatives à la sécurité dans une installation de transport de personnes ainsi que procédé de fonctionnement d'un tel dispositif Active EP3704048B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17199318 2017-10-31
PCT/EP2018/077190 WO2019086205A1 (fr) 2017-10-31 2018-10-05 Dispositif de surveillance de sécurité destiné à surveiller des états relatifs à la sécurité dans une installation de transport de personnes ainsi que procédé destiné à faire fonctionner ce dernier

Publications (2)

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EP3704048A1 true EP3704048A1 (fr) 2020-09-09
EP3704048B1 EP3704048B1 (fr) 2021-12-01

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EP18779406.0A Active EP3704048B1 (fr) 2017-10-31 2018-10-05 Dispositif de surveillance de sécurité destiné à surveiller des conditions relatives à la sécurité dans une installation de transport de personnes ainsi que procédé de fonctionnement d'un tel dispositif

Country Status (4)

Country Link
US (1) US11618648B2 (fr)
EP (1) EP3704048B1 (fr)
CN (1) CN111295350B (fr)
WO (1) WO2019086205A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115362119A (zh) * 2020-03-31 2022-11-18 因温特奥股份公司 用于对电梯设备进行安全监控的安全监控装置和方法
US20220242692A1 (en) * 2021-02-01 2022-08-04 Otis Elevator Company Elevator switch monitoring device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58906550D1 (de) * 1988-08-23 1994-02-10 Inventio Ag Verfahren und Vorrichtung für die Erzeugung einer Schachtinformation bei Aufzügen.
ES2077759T3 (es) 1990-10-31 1995-12-01 Inventio Ag Barrera de luz de horquilla de doble canal con una construccion "failsafe".
DE19849238C1 (de) 1998-10-26 2000-03-09 O & K Rolltreppen Gmbh Verfahren zur Abschaltung von Personenförderanlagen sowie Sicherheitskreis für Personenförderanlagen
US6173814B1 (en) 1999-03-04 2001-01-16 Otis Elevator Company Electronic safety system for elevators having a dual redundant safety bus
SG85215A1 (en) 1999-10-08 2001-12-19 Inventio Ag Safety circuit for an elevator installation
FI125141B (fi) * 2007-01-03 2015-06-15 Kone Corp Hissin turvalaite
ES2424029T3 (es) * 2008-12-23 2013-09-26 Inventio Ag Instalación de elevador
CN102596780B (zh) * 2009-10-26 2014-08-06 因温特奥股份公司 电梯设备中的安全电路
JP2011195205A (ja) 2010-03-17 2011-10-06 Toshiba Elevator Co Ltd エレベータの安全回路
TWI622548B (zh) * 2012-12-13 2018-05-01 伊文修股份有限公司 用於人員輸送設備的監視裝置、人員輸送設備、以及用於監視人員輸送設備之方法
WO2014124780A1 (fr) * 2013-02-12 2014-08-21 Inventio Ag Surveillance de circuit de sécurité au moyen d'une tension alternative
EP3083478B1 (fr) * 2013-12-18 2022-06-08 Inventio AG Circuit de sécurité pour une installation d'ascenseur
EP2886501A1 (fr) 2013-12-18 2015-06-24 Inventio AG Ascenseur doté d'un système de positionnement absolu pour une cabine à double étage
EP3277612B1 (fr) * 2015-04-01 2020-09-30 KONE Corporation Appareil de commande de frein et procédé de commande de frein d'ascenseur
ES2935817T3 (es) 2015-07-15 2023-03-10 Otis Elevator Co Sistema de control de ascensores
CN105384018A (zh) * 2015-11-25 2016-03-09 苏州汾湖电梯科技有限公司 一种家用电梯门双触点检测系统

Also Published As

Publication number Publication date
EP3704048B1 (fr) 2021-12-01
US11618648B2 (en) 2023-04-04
CN111295350B (zh) 2021-10-08
WO2019086205A1 (fr) 2019-05-09
US20200346893A1 (en) 2020-11-05
CN111295350A (zh) 2020-06-16

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