EP0535205A1 - Überwachungseinrichtung für eine steuervorrichtung. - Google Patents
Überwachungseinrichtung für eine steuervorrichtung.Info
- Publication number
- EP0535205A1 EP0535205A1 EP92909211A EP92909211A EP0535205A1 EP 0535205 A1 EP0535205 A1 EP 0535205A1 EP 92909211 A EP92909211 A EP 92909211A EP 92909211 A EP92909211 A EP 92909211A EP 0535205 A1 EP0535205 A1 EP 0535205A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- monitoring
- control
- input
- sensor
- monitoring device
- 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
Links
Classifications
-
- 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
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
-
- 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
- B66B5/0037—Performance analysers
-
- 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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
Definitions
- the invention relates to a monitoring device for a control device having a safety chain, in particular for elevator and conveyor systems.
- a simple test option would be particularly important in elevator systems, since there are a large number of safety switches which are never actuated in normal operation, but are intended to function in an emergency. With these switches, a functional test has so far often only been carried out at large time intervals, since the parts to be monitored had to be moved for the test, which was all the more problematic the more unfavorable the switch or the part to be monitored was accessible to a fitter for testing .
- each switching device can also be connected to the Control connected and in this case be queried in the desired order with regard to their respective switching state, but the query takes more and more time with increasing number of security points.
- the invention is based on the object of specifying an improved monitoring device which enables the implementation of a reliable control for elevator and conveyor systems with a safety chain and high safety requirements with comparatively little effort.
- a monitoring device of the type specified at the outset in accordance with the invention in that it has a contactless, electronic, testable switching device with a sensor and with control electronics, with the aid of which the state of the sensor can be detected and changed for test purposes , which has input and output connections for establishing the data exchange with a higher-level control connection, the input and output connections being designed in such a way that with the input and output connections of further switching devices they form a monitoring loop that can be connected to the higher-level control a branch rising from this control and a branch returning to this control can be connected, and which has an electronic changeover switch, by switching it to a state which does not meet the safety criteria for the safety chain the returning branch of the monitoring loop can be interrupted for the switching devices further away from the control.
- the electronic changeover switch of the control electronics can be used as a switch of a safety chain or a safety switch chain, as in the case of a mechanically operated switching device.
- the monitoring device includes further testable switching devices and a higher-level control, since this opens up the possibility of establishing a monitoring loop by connecting the switching devices to one another.
- An output of the higher-level control system can then apply a continuous signal to the input-side end of the monitoring loop, the interruption of which can be detected at the output-side end of the monitoring loop at an input of the higher-level control system.
- a so-called quiescent current loop can be implemented in a monitoring device according to the invention, which in a further embodiment of the invention forms a "digital quiescent current loop" in a continuous signal in the form of a defined pulse sequence.
- FIG. 1 shows a highly schematic basic circuit diagram of a monitoring device according to the invention in the form of a single electronic switching device
- Fig. 2 shows a detailed representation of the
- FIG. 3 shows a schematic circuit diagram of a control device for an elevator installation comprising a monitoring device according to the invention.
- FIG. 1 schematically shows a monitoring device according to the invention in the form of a contactless, electronic switching device with sensor electronics 10 and a magnetic field sensor 12, for example comprising a Hall element, which responds to an external magnetic field.
- This external magnetic field can be generated, for example, by a permanent magnet 14, which is usually attached to a movable component 15 to be monitored, namely, for example, an elevator door.
- the sensor 12 delivers a signal in which an electronic (toggle) switch 48 of the sensor electronics 10, indicated by broken lines, is in an "unactuated" state is held, especially in the open state.
- the Permanent magnet 14 then, starting from the previously described state, approaches sensor 12 to a predetermined minimum distance, then said switch is switched into its “actuated” state, in particular into its closed state, so that output A of sensor electronics 10 and thus a corresponding control signal is emitted to the switching device as a whole, which indicates that the movable component 15 with the permanent magnet 14 is in the position required for carrying out a specific action, in particular for safety reasons.
- a magnetic coil 16 is provided, which is dimensioned and arranged with respect to the sensor 12 in such a way that with its help in In the area of the sensor 12, a magnetic field can be generated, which can compensate for the effect of the magnetic field of the permanent magnet 14 present in the detection area of the sensor 12.
- the switching device under consideration is designed such that the functional test takes place before the initiation of an action monitored by the switching device, a corresponding signal being applied to an input E of the sensor electronics 10 as a function of the planned action. to bring about a corresponding control of the solenoid 16.
- the functional test can also be carried out periodically at suitable short intervals, it being possible for the clock for the test processes to be generated in the sensor electronics itself by means of a suitable clock generator.
- a sensor 12 can be used in the practical implementation of a switching device according to the invention for carrying out the method according to the invention, which comprises a Hall sensor 18 in the form of an integrated circuit with an open-drain output and a pull-up resistor 20 connected to it .
- One connection of this resistor 20 is connected to a connection terminal to which a supply voltage V DD is present, while the other connection is connected to a circuit point 22 which forms an input of an internal control circuit 24 of the sensor electronics 10.
- the control circuit 24, which is part of the sensor electronics 10, supplies an output signal for a control block 26, to which a second input signal for activating the magnetic coil 16 can be fed via a signal line 28, which via a corresponding input circuit 30 with a higher-level control, namely one Bus control 32 (cf. FIG. 3), can be connected and can be connected on the output side via an output circuit 34 to further sensor electronics circuits which belong to further contactless electronic switching devices.
- the control block 26 supplies a control signal by means of which a transistor 36 is controlled to be conductive, so that a current can flow through the excitation winding 38 of the magnet coil 16, the excitation winding 38 conventionally having a free-wheeling diode 40 is connected in parallel.
- the sensor electronics 10 further comprises a data input line 42 and a data output line 44, these two lines each being provided with an input circuit and an output circuit.
- the data input line 42 represents an ascending data path starting from the bus control 32 (FIG. 3), via which the sensor electronics circuits 10 of all the switching devices belonging to a safety chain are connected.
- the signal line 28 and the data input line 42 with their associated input circuits thus correspond to the input E, which is only indicated schematically in FIG. 1.
- the data output line 44 which corresponds to the output A in FIG. 1, provides one of the connected switching devices to the bus control 32 returning data path.
- the data input line 42 is connected to a receiving part 46 which scans the data running over the data input line 42 and forms an input register.
- the receiving part 46 is additionally provided with an input connected to the control circuit 24.
- a switchover device or switch 48 is inserted into the data output line 44, which is controlled by the output signal of an OR gate 50, the two inputs of which have the switching point 22 or the output of one Transmitting part 52 are connected, either the data output of the transmitting part 52, which supplies status and address signals, or connects the input side of the data output line 44 to its output side.
- the transmitting part 52 is connected to the control circuit 24 via a further output and a further input. As indicated in FIG.
- the sensor electronics 10 comprises a clock generator 54 and is otherwise fed from a schematically indicated voltage supply 56, which generates the regulated supply voltage V DD of, for example, 5 V from an optionally unregulated input voltage of 24 V.
- V DD the voltage V DD is also applied to the solenoid 16.
- the open-drain output of the Hall sensor 18 is pulled to the supply voltage V DD via the resistor 20 in the absence of a magnetic field and to the reference potential in the presence of a magnetic field. These voltages are at the switching point 22. If an excitation current flows through the magnet coil 16 when the switching device is initially actuated, that is to say starting from a state in which the permanent magnet 14 acts on the sensor 18 and the switching point 22 is at reference potential, then this causes this Previously existing magnetic field on the sensor 18 compensated so that the voltage V DD is supplied to the node 22. This signal change indicates that sensor 18 is functioning properly as the most important part of the switching device.
- FIG. 3 shows how the sensor electronics circuits 10.1 to 10.n are switched from n testable electronic switching devices to a safety chain and are associated with the one that forms a higher-level control Bus controller 32 are connected to actuate a switch 58 in a motor circuit 60.
- n sensor electronics circuits 10.1, 10.2 to 10.n are provided, to which, as explained for the switching device according to FIG. 2, a sensor 12.1 to 12.n and a magnet coil 16.1 to 16.n are assigned, each sensor cooperates with a permanent magnet 14.1 to 14.n.
- the permanent magnets 14.1 to 14.n are each connected to a door 15.1 to 15.n as a movable component to be monitored.
- the individual magnetic coils 16.1 to 16.n can be activated via lines 28 and 42 for test purposes in order to determine whether the associated switching devices are working properly.
- a coil activation signal is applied to line 28 when a functional test is to be carried out, while the individual switching devices or sensor electronics circuits are called up via address 42 in line with the address.
- the line 44 provides feedback on the correct functioning of the individual switching devices and on their switching state. If all the switching devices are working properly and all the doors are in the correct position, the bus control 32, which can possibly be connected to other bus controls belonging to other safety circuits, as shown in FIG.
- This loop can serve as a monitoring loop, the ascending branch of which is connected on the input side to an output of the bus control 32 and the returning branch is connected at its end to an input of the bus control 32.
- the bus controller 32 can send a continuous signal, the presence of which is monitored on the returning branch of the loop, so that in the end there is a type of quiescent current loop. If the bus controller 32 instead of a simple continuous signal, such as a specific one
- the circuit arrangement shown in FIG. 3 can be supplemented in a further embodiment of the invention in that a signal converter 72 is inserted between the upper end of the ascending branch and the beginning of the descending branch in the cross connection 43 between the two branches, as indicated by dashed lines is converted by the incoming via the ascending branch of the monitoring loop sequence of digital signals in a defined manner in a changed digital signal sequence.
- this also makes it possible to detect errors which are based on an undesired cross-connection between the ascending and the descending or returning branch of the monitoring loop.
- Such cross connections can occur, for example, in the event of short circuits in the individual sensor electronics circuits.
- the monitoring device according to the invention enables a relatively simple structure of a complete control device and ensures reliable, trouble-free operation of the same.
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Safety Devices In Control Systems (AREA)
- Programmable Controllers (AREA)
- Selective Calling Equipment (AREA)
- Beans For Foods Or Fodder (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4112626 | 1991-04-18 | ||
DE4112626A DE4112626A1 (de) | 1991-04-18 | 1991-04-18 | Ueberwachungseinrichtung fuer eine steuervorrichtung |
PCT/EP1992/000853 WO1992018410A1 (de) | 1991-04-18 | 1992-04-16 | Überwachungseinrichtung für eine steuervorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0535205A1 true EP0535205A1 (de) | 1993-04-07 |
EP0535205B1 EP0535205B1 (de) | 1996-02-28 |
Family
ID=6429834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92909211A Expired - Lifetime EP0535205B1 (de) | 1991-04-18 | 1992-04-16 | Überwachungseinrichtung für eine steuervorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5487448A (de) |
EP (1) | EP0535205B1 (de) |
AT (1) | ATE134592T1 (de) |
CA (1) | CA2085751C (de) |
DE (2) | DE4112626A1 (de) |
ES (1) | ES2085624T3 (de) |
WO (1) | WO1992018410A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6056088A (en) * | 1997-09-22 | 2000-05-02 | Inventio Ag | Elevator safety circuit monitor and control for drive and brake |
US6732839B2 (en) | 2000-08-07 | 2004-05-11 | Inventio Ag | Contactless switching device for an elevator safety chain |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4242792C2 (de) * | 1992-12-17 | 1997-02-06 | Sick Optik Elektronik Erwin | Sicherheitsschalteranordnung |
US5610374A (en) * | 1994-05-10 | 1997-03-11 | Montgomery Kone Inc. | Safety string polling system |
US5644111A (en) * | 1995-05-08 | 1997-07-01 | New York City Housing Authority | Elevator hatch door monitoring system |
DE19614461A1 (de) * | 1996-04-12 | 1997-10-16 | Bosch Gmbh Robert | Sicherheitseinrichtung für einen Antrieb, insbesondere Garagentorantrieb |
ATE292333T1 (de) * | 1996-05-20 | 2005-04-15 | Ifm Electronic Gmbh | Elektronisches schaltgerät und schaltungsanordnung zur überwachung einer anlage |
KR19980075905A (ko) * | 1997-04-03 | 1998-11-16 | 이종수 | 엘리베이터 분산제어기의 고장 점검방법 |
DE19714198A1 (de) * | 1997-04-07 | 1998-10-08 | Euchner Gmbh & Co | Sicherheitsschalter |
US5950767A (en) * | 1997-08-15 | 1999-09-14 | Otis Elevator Company | Optical door lock |
DE19752362A1 (de) * | 1997-11-26 | 1999-06-17 | Doppelmayr Seilbahn Produktion | Schaltungsanordnung zur Überwachung des fehlerfreien und/oder zur Erkennung eines fehlerbehafteten Zustands einer Anlage |
AU6286198A (en) * | 1998-02-24 | 1999-09-15 | Teclion | A method and a device for monitoring the operation of an elevator |
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 |
DE10036598A1 (de) * | 2000-07-27 | 2002-02-14 | Infineon Technologies Ag | Anordnung zur Überwachung des ordnungsgemäßen Betriebes von die selben oder einander entsprechende Aktionen ausführenden Komponenten eines elektrischen Systems |
US6382362B1 (en) * | 2001-02-13 | 2002-05-07 | Inventio Ag | Optical monitoring system for hoistway door interlocks |
ITMI20021718A1 (it) * | 2002-07-31 | 2004-02-01 | Sematic Italia Spa | Interruttore di sicurezza con sistema elettronico programmabile. |
ZA200501470B (en) * | 2004-03-05 | 2006-04-26 | Inventio Ag | Method and device for automatic checking of the availability of a lift installation |
JP2006048162A (ja) * | 2004-07-30 | 2006-02-16 | Fujitsu Ltd | ループ状態監視装置 |
FI116937B (fi) * | 2004-11-01 | 2006-04-13 | Kone Corp | Hissin testijärjestelmä |
FI117797B (fi) * | 2005-04-08 | 2007-02-28 | Kone Corp | Hissijärjestelmä |
FI120088B (fi) * | 2007-03-01 | 2009-06-30 | Kone Corp | Järjestely ja menetelmä turvapiirin valvomiseksi |
FI122474B (fi) * | 2010-12-01 | 2012-02-15 | Kone Corp | Hissin turvakytkentä sekä menetelmä hissin turvakytkennän toiminnallisen poikkeaman tunnistamiseksi |
EP2567926B1 (de) * | 2011-09-06 | 2013-10-09 | Cedes AG | Schaltungseinrichtung, Sicherungsvorrichtung sowie Aufzugvorrichtung |
EP2720098B1 (de) * | 2012-10-10 | 2020-04-15 | Sick Ag | Sicherheitssystem für eine Anlage umfassend einen Testsignalpfad mit Hin- und Rückleitungspfad |
EP2720094B1 (de) | 2012-10-10 | 2015-05-20 | Sick Ag | Sicherheitssystem |
EP3083478B1 (de) * | 2013-12-18 | 2022-06-08 | Inventio AG | Sicherheitssystem für eine aufzugsanlage |
EP2930134B1 (de) * | 2014-04-09 | 2018-05-30 | Kone Corporation | Sicherheitssystem und Verfahren für sicherheitskritische Komponenten in einer Aufzugsanlage |
EP3012217B8 (de) * | 2014-10-21 | 2017-08-02 | KONE Corporation | Sicherheitssystem für Aufzug |
WO2016096269A1 (de) * | 2014-12-17 | 2016-06-23 | Inventio Ag | Sicherheitsschaltung für eine aufzugsanlage |
US11175638B2 (en) | 2015-11-09 | 2021-11-16 | Otis Elevator Company | Self-diagnostic electrical circuit |
EP3825706B1 (de) | 2019-11-25 | 2023-09-27 | Otis Elevator Company | Elektronischer testknoten für automatische überprüfung einer sicherheitskette |
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US3054475A (en) * | 1956-12-18 | 1962-09-18 | Schweiz Wagons Aufzuegefab | Safety device for an elevator door |
US3625312A (en) * | 1969-06-09 | 1971-12-07 | Murray Hutner | Safety apparatus for landing gates on hoist elevators |
US3913723A (en) * | 1973-07-09 | 1975-10-21 | Westmont Ind | Safety switching for passenger conveyor |
US4002973A (en) * | 1975-12-23 | 1977-01-11 | Armor Elevator Company | Elevator testing system |
CH648001A5 (de) * | 1979-12-21 | 1985-02-28 | Inventio Ag | Gruppensteuerung fuer aufzuege. |
GB2110388A (en) * | 1981-10-30 | 1983-06-15 | Yorkshire Chemicals Ltd | Improvements relating to electrical controls for lifts, hoists and the like |
US4561093A (en) * | 1983-02-22 | 1985-12-24 | Otis Elevator Company | Servicing a software-controlled elevator |
US4568909A (en) * | 1983-12-19 | 1986-02-04 | United Technologies Corporation | Remote elevator monitoring system |
DE3430061A1 (de) * | 1984-08-16 | 1986-02-27 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Schaltsystem zum selbsttaetigen zu- und abschalten von mehreren hintereinandergeschalteten, einen foerderstrang bildenden foerderorganen |
US4710955A (en) * | 1985-11-25 | 1987-12-01 | General Instrument Corporation | Cable television system with two-way telephone communication path |
US4831362A (en) * | 1986-05-16 | 1989-05-16 | Aeroquip Corporation | Failure detection system for a metallic debris detection system |
US4750591A (en) * | 1987-07-10 | 1988-06-14 | Otis Elevator Company | Elevator car door and motion sequence monitoring apparatus and method |
ATE99264T1 (de) * | 1988-08-23 | 1994-01-15 | Inventio Ag | Verfahren und vorrichtung fuer die erzeugung einer schachtinformation bei aufzuegen. |
US4898263A (en) * | 1988-09-12 | 1990-02-06 | Montgomery Elevator Company | Elevator self-diagnostic control system |
DE3934974A1 (de) * | 1989-08-08 | 1991-02-14 | Bosch Gmbh Robert | Vorrichtung zur funktionskontrolle mehrerer steuergeraete in einem kraftfahrzeug |
US5107964A (en) * | 1990-05-07 | 1992-04-28 | Otis Elevator Company | Separate elevator door chain |
ES2077759T3 (es) * | 1990-10-31 | 1995-12-01 | Inventio Ag | Barrera de luz de horquilla de doble canal con una construccion "failsafe". |
US5343145A (en) * | 1991-04-09 | 1994-08-30 | Crown Equipment Corporation | Method and apparatus for monitoring the proper operation of a hall effect device used in detecting buried magnets in a control system for materials handling vehicles |
JP2758731B2 (ja) * | 1991-05-22 | 1998-05-28 | 三菱電機株式会社 | エレベータの信号伝送装置 |
US5360952A (en) * | 1993-06-01 | 1994-11-01 | Otis Elevator Company | Local area network eleveator communications network |
-
1991
- 1991-04-18 DE DE4112626A patent/DE4112626A1/de not_active Withdrawn
-
1992
- 1992-04-16 AT AT92909211T patent/ATE134592T1/de not_active IP Right Cessation
- 1992-04-16 DE DE59205460T patent/DE59205460D1/de not_active Expired - Lifetime
- 1992-04-16 CA CA002085751A patent/CA2085751C/en not_active Expired - Fee Related
- 1992-04-16 WO PCT/EP1992/000853 patent/WO1992018410A1/de active IP Right Grant
- 1992-04-16 ES ES92909211T patent/ES2085624T3/es not_active Expired - Lifetime
- 1992-04-16 EP EP92909211A patent/EP0535205B1/de not_active Expired - Lifetime
-
1994
- 1994-11-23 US US08/344,517 patent/US5487448A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9218410A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6056088A (en) * | 1997-09-22 | 2000-05-02 | Inventio Ag | Elevator safety circuit monitor and control for drive and brake |
US6732839B2 (en) | 2000-08-07 | 2004-05-11 | Inventio Ag | Contactless switching device for an elevator safety chain |
Also Published As
Publication number | Publication date |
---|---|
DE59205460D1 (de) | 1996-04-04 |
EP0535205B1 (de) | 1996-02-28 |
US5487448A (en) | 1996-01-30 |
CA2085751C (en) | 1996-08-20 |
CA2085751A1 (en) | 1992-10-19 |
DE4112626A1 (de) | 1992-10-22 |
ATE134592T1 (de) | 1996-03-15 |
ES2085624T3 (es) | 1996-06-01 |
WO1992018410A1 (de) | 1992-10-29 |
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