EP1307395B2 - Überwachungseinrichtung für einen aufzug - Google Patents

Überwachungseinrichtung für einen aufzug Download PDF

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Publication number
EP1307395B2
EP1307395B2 EP01957667A EP01957667A EP1307395B2 EP 1307395 B2 EP1307395 B2 EP 1307395B2 EP 01957667 A EP01957667 A EP 01957667A EP 01957667 A EP01957667 A EP 01957667A EP 1307395 B2 EP1307395 B2 EP 1307395B2
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EP
European Patent Office
Prior art keywords
unit
passive
pattern
active
bus
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.)
Expired - Lifetime
Application number
EP01957667A
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German (de)
English (en)
French (fr)
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EP1307395B1 (de
EP1307395A1 (de
Inventor
Killian Schuster
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Inventio AG
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Inventio AG
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Application filed by Inventio AG filed Critical Inventio AG
Priority to EP01957667A priority Critical patent/EP1307395B2/de
Publication of EP1307395A1 publication Critical patent/EP1307395A1/de
Publication of EP1307395B1 publication Critical patent/EP1307395B1/de
Priority to CY20071100157T priority patent/CY1105988T1/el
Application granted granted Critical
Publication of EP1307395B2 publication Critical patent/EP1307395B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a monitoring device for an elevator, which comprises at least one non-contact operable switching device.
  • switching devices In elevator systems, individual actions, for example a ride on a lift, are generally monitored by means of switching devices. Several of such switching devices must have a certain state in order to perform the intended action safely. In particular, in the case of an elevator installation it must be ensured that all doors remain closed and mechanically locked before the start of and during the journey of the elevator cage.
  • EP 0 535 205 B1 is a monitoring device for a safety chain having a control device is known, which is provided with a non-contact triggerable sensor comprising a switching device. By approaching or removing a magnet, the switches or sensors are actuated.
  • a disadvantage of this solution is the fact that the switch or the sensor responds to each magnet, regardless of whether this magnet is the right and the particular of the selected switch or sensor magnet. It is sufficient to approximate a corresponding material to trigger a valid signal. As soon as the switch is within the working range of the magnet, it triggers a valid signal. A malfunction (incorrect triggering) of the switch or the sensor can hardly be excluded with reasonable effort. An erroneous trip can also be caused for example by artifacts and / or external interference, which is dangerous for the safe operation of the elevator system.
  • the invention has for its object to provide a monitoring device for an elevator of the type mentioned, which does not have the aforementioned disadvantages and allows safe and trouble-free monitoring. Furthermore, the monitoring device is insensitive to artifacts and external manipulations. By means of the monitoring device, the components to be monitored are uniquely identifiable.
  • One advantage is the fact that a valid signal can only be triggered with an example worldwide only passive unit.
  • the active unit can not generate a valid signal without having the right passive unit in range.
  • Another advantage is that the monitoring is ensured with inexpensive producible elements.
  • Another advantage is that several switching devices can be monitored for functionality and condition at the same time.
  • the concatenation of several active units takes place in such a way that the answers of all passive units are linked in such a way that a mutual influence in the sense of a misinterpretation can be excluded.
  • Another advantage is the fact that a data exchange between active and passive unit can take place only by approaching the working as an antenna coils.
  • the passive unit does not need its own power supply or battery. This is achieved by having an energy store in which the energy transmitted by the active unit can be stored. This saves energy. Since the energy must be transmitted to generate the response, no spontaneous activity is possible.
  • FIG. 1 a switching device 1 of an electronic security chain is shown, wherein the switching device 1 has formed as an inquiry unit 2 active unit and designed as a response unit 3 passive unit.
  • the response unit 3 may be, for example, a transponder, a tag, a smart card or a chip card.
  • the interrogation unit 2 has a first coil 4 and the response unit 3 has a second coil 5.
  • the query unit 2 and the response unit 3 are in a so-called resting state, that is, they are distanced from each other so far that no interaction so no electromagnetic coupling takes place between them.
  • the interrogation unit 2 generates a pattern M which is transmitted to the response unit 3 and to which the response unit 3 does not respond.
  • FIG. 2 is the same switching device 1 off FIG. 1 shown, but in this case is in a so-called operating state.
  • the interrogation unit 2 and the response unit 3 are arranged so close to each other that an interaction takes place. So there is an electromagnetic coupling between the interrogation unit 2 and the response unit 3 instead.
  • On the generated by the query unit 2 pattern M is given by the response unit 3, a complex response M '.
  • the interrogation unit 2 may comprise a generator 6, a first modulator 7 and a first demodulator 8.
  • the generator 6 may be, for example, an RF generator, an RF generator and so on.
  • the response unit 3 may in turn comprise a second modulator 9 and a second demodulator 10.
  • the response unit 3 may further comprise an energy store 11, which may be formed, for example, as a capacitor with a capacity. The response unit 3 therefore preferably has no own power supply or battery.
  • the interrogation unit 2 is designed so that it is able to transmit information to the response unit 3 and / or to obtain information from the response unit 3.
  • the first coil 4 and the second coil 5 are formed in this example as an antenna.
  • the interrogation unit 2 transmits the energy to the response unit 3 via an electromagnetic field. Electromagnetic coupling is referred to as the energy transfer functions similarly as in a transformer where the energy from the primary winding is transferred by tight coupling to the secondary winding.
  • the energy coupled in via the electromagnetic field temporarily stores the response unit 3 in the energy store 11. As soon as the response unit 3 has received sufficient energy, it becomes functional and responds in a very specific manner to the pattern M generated by the interrogation unit 2.
  • the pattern M and / or the answer M ' may be, for example, numbers represented by a bit pattern / bit sequence.
  • the pattern M exciting the response unit 3 does not need to be very complex, since it serves primarily to transmit energy and to trigger a response M '.
  • the pattern M may be approximately an RF carrier and generated as a phase modulated RF signal.
  • the pattern M is used by the response unit 3 only for power generation and synchronization of a response.
  • the pattern M as an instruction to the response unit 3 can be understood to generate a corresponding response M '.
  • the pattern M need not be constant and may be specified by the interrogation unit 2 or externally.
  • the response unit 3 changes the pattern M so as to ensure that this change is made by the corresponding response unit 3 itself and not by another element. This can be done, for example, by the response unit 3 responding to a request with the transmission of a one-to-one number. Thus, the response unit 3 is uniquely identified.
  • FIG. 3 shows a concatenation of several switching devices 1, which are serially linked to a central control unit 12.
  • the central control unit 12 sends a command r (x) and an instruction a (w) in data word format via a serial channel 13 to all query units 2 of the safety chain S. From this an electromagnetic signal is generated and as a pattern M, for example, with the function M (R, x) can be represented, the response units 3 transmitted.
  • the pattern M excites the respective response units 3 if they are in range / within the range of the interrogation units 2.
  • Each response unit 3 has a characteristic function fi (x), where i represents the number of participants, that is, in this example, the response units 3 are denoted by the characteristic functions f0 (x), f1 (x) and f2 (x).
  • the response units 3 process the pattern M with the respective characteristic functions fi (x).
  • the respective responses M 'formed as electromagnetic information, which can be represented by the function M' (A, fi (x)), for example, are converted into data word information and additively linked along the serial channel 13.
  • the result a (w + fi (x)) is returned to the central control unit 12. This checks the result for validity and thus decides on the state of the safety chain S, ie on the state of the individual switching devices 1.
  • the central control unit 12 must be functional and reliable, which can be ensured for example by a redundant decision branch, not shown in a known manner .
  • the answers M 'of the response units 3 can be additively linked, ensuring that the responses of all the switching devices 1 are independent of one another. In this example, this is achieved by the characteristic functions f0 (x), f1 (x) and f2 (x).
  • the communication with the central control unit 12 and the data transfer to the same takes place via a bus 13.
  • the characteristic function fi (x) of the response unit 3 is stored, for example, in a table. This means that the determination of the function value is attributed to reading out a memory addressed by the function argument.
  • the structure of the table can be done in a one-time initialization cycle.
  • FIGS. 4, 5 and 6 A preferred embodiment results from an arrangement as in the following FIGS. 4, 5 and 6 is set forth.
  • the response unit 3 has an address / data memory 14, an intermediate data memory 15, a local control unit 16, a modulation / demodulation unit 17 and an antenna 18, which may be formed as a coil ,
  • the pattern M may be represented by the function M (R, x), where R represents a request and x represents an address. If a pattern M (R, x) is received by the antenna 18 and subsequently demodulated by the modulation / demodulation unit 17, this is communicated as a request R to a local control unit 16. This then causes the reading of the cell with the address x from the address / data memory. The read-out value is interpreted as the result fi (x), modulated together with the identifier A and emitted via the antenna 18 as a response M ', which can thus be represented as a function M' (A, fi (x)).
  • the configuration of the address / data memory so that the contents at the addresses x correspond to the values f (x) can also be effected via analogous mechanisms with corresponding commands or else separately, for example by means of a laser and a permanent change in the semiconductor structure.
  • the linking of the answers M 'of several response units is carried out by serial addition of the individual results along a bus 13.
  • the queries of the response units 3 can be triggered using appropriate commands.
  • the interrogation unit 2 has a further antenna 19, a further modulation / demodulation unit 20, a further local control unit 21, a further intermediate data memory 22, an adder 23, and a bus coupling 24, which is positioned along the serial bus 13.
  • the result determined by the summation over all tags is compared with that determined by the interrogation unit, and if the safety circuit matches, it is evaluated as closed.
  • the central control unit 12 has a control unit 25, a random number generator 26, a memory 27, a computer 28, a comparator 29 and a coupling 30, which ensures the serial connection to the interrogation units 2.
  • a random argument x is generated by the random number generator 26 and output to the interrogation units 2 as a command r (x).
  • the random argument x will then correspond to an address of the address / data memory 14 of the response unit 3.
  • the "desired value” f.sub.10 (x) +... + F.sub.N (x) is calculated. In doing so, all those response units T0... TN which are necessary to achieve a certain security state are taken into account.
  • the query of the results by means of the statement a (0).
  • the result f0 (x) +... + FN (x) thus determined is compared in the comparator 29 with the desired value and, according to the result, either the "closed circuit" or "open circuit” directive is output.
  • An assessment of the safety status can be cyclical or on request.
  • f (x) can also be used.
  • f is chosen so that a simple criterion can be used to test the result.
  • Such functions are well known by the term "one-way function” or "trap door function" in the field of cryptography. The function does not necessarily have to deliver scalar results.
  • bus system For communication a variety of known bus system can be used. Since the security is ensured at a higher hierarchical level, the requirements for the bus system itself are very low.
  • the concatenation of the interrogation stations can also be accomplished by other functions than the addition.
  • a query command r (x) which is propagated along the bus 13 by means of the interrogation units 2, is output by the central control unit 12.
  • the query command r (x) serves to generate a response in the response units 3 for each request unit 2, as it were, as a drive command.
  • the response units 3 in the series have the characteristic functions f0 (x), f1 (x) and f2 (x).
  • the central control unit also sends the instruction a (w) on the bus 13, which is interpreted as a read-out command by the interrogation units 2, to read the answers M 'and forward them.
  • w1 a (w0 + f0 (x)
  • FIG. 7 is the concatenation according to FIG. 3 shown as a safety chain for the door contacts of a lift system.
  • On three floors 31 of a building elevator doors 32 are provided, which are formed in this example as shaft doors 32.
  • Each landing door 32 has a first door 32 'and a second door 32 "movable relative to each other for opening and closing the door FIG. 4 represented by the arrows P.
  • the first door 32 ' has the interrogation unit 2 and the second door 32 "includes the answering unit 3.
  • the interrogation unit 2 and the answering unit 3 are arranged on the respective door 32', 32" so as to be so close when the landing door 32 is closed
  • the interrogation units 2 and the response units 3 are preferably located on those parts of the respective door wings that overlap when the door is closed.
  • the interrogation units 2 and the answering units 3 are preferably arranged on the corresponding door wings 32 ', 32 "such that they do not interact within the meaning of the invention until the door wings 32', 32" are already mechanically or electromechanically locked.
  • the interrogation units 2 of each landing door 32 are connected in series via a bus line 13 and to a control unit 12.
  • the query of the interrogation units 2, the answer of the answering units 3 as well as the data transmission to the control unit 12 functions exactly as in FIG. 3 is shown.
  • this safety chain S operating in the manner according to the invention, the door contacts of the shaft doors can be safely monitored and uniquely identified. Wrong trips are avoided.
  • the control unit 12 continuously monitors the state of the door contacts and is connected to a central elevator control, not shown, in a conventional manner.
  • the monitoring device according to the invention can be used at all points of a lift to be secured, and the switching devices can replace all safety switches of a lift.
  • the active and / or the passive unit can also be provided with switching contacts or with semiconductor switches, for example, put the energy storage or the antenna out of operation. This could be applied, for example, to existing mechanical contacts.

Landscapes

  • Indicating And Signalling Devices For Elevators (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Elevator Control (AREA)
  • Elevator Door Apparatuses (AREA)
  • Lock And Its Accessories (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Burglar Alarm Systems (AREA)
  • Warehouses Or Storage Devices (AREA)
EP01957667A 2000-08-07 2001-08-02 Überwachungseinrichtung für einen aufzug Expired - Lifetime EP1307395B2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01957667A EP1307395B2 (de) 2000-08-07 2001-08-02 Überwachungseinrichtung für einen aufzug
CY20071100157T CY1105988T1 (el) 2000-08-07 2007-02-05 Εξοπλισμος επιτηρησης δια εναν ανελκυστηρα

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00810706 2000-08-07
EP00810706 2000-08-07
PCT/CH2001/000474 WO2002012109A1 (de) 2000-08-07 2001-08-02 Überwachungseinrichtung für einen aufzug
EP01957667A EP1307395B2 (de) 2000-08-07 2001-08-02 Überwachungseinrichtung für einen aufzug

Publications (3)

Publication Number Publication Date
EP1307395A1 EP1307395A1 (de) 2003-05-07
EP1307395B1 EP1307395B1 (de) 2006-11-08
EP1307395B2 true EP1307395B2 (de) 2009-11-18

Family

ID=8174850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01957667A Expired - Lifetime EP1307395B2 (de) 2000-08-07 2001-08-02 Überwachungseinrichtung für einen aufzug

Country Status (14)

Country Link
US (1) US6732839B2 (es)
EP (1) EP1307395B2 (es)
JP (1) JP2004505868A (es)
CN (1) CN1232436C (es)
AT (1) ATE344778T1 (es)
AU (2) AU7953101A (es)
CA (1) CA2416902C (es)
CY (1) CY1105988T1 (es)
DE (1) DE50111416D1 (es)
DK (1) DK1307395T3 (es)
ES (1) ES2276809T5 (es)
IL (1) IL153936A0 (es)
PT (1) PT1307395E (es)
WO (1) WO2002012109A1 (es)

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EP1765713A4 (en) * 2004-06-22 2010-03-03 Otis Elevator Co ELEVATOR DOOR POSITION DETECTOR
ATE521563T1 (de) * 2004-07-06 2011-09-15 Otis Elevator Co Elektromagnetisch betriebenes aufzugtürschloss
CN100522780C (zh) * 2004-08-31 2009-08-05 三菱电机株式会社 单井道多轿厢方式电梯的控制装置
ATE532736T1 (de) * 2004-09-03 2011-11-15 Otis Elevator Co Aufzug mit einer vorrichtung zur erfassung von fremdkörpern und insbesondere fingern zwischen den türen und den angrenzenden wänden einer aufzugskabine mit glastüren
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US7958970B2 (en) * 2009-09-02 2011-06-14 Empire Technology Development Llc Acceleration sensor calibrated hoist positioning
KR101481568B1 (ko) 2010-09-13 2015-01-13 오티스 엘리베이터 컴파니 엘리베이터 안전 시스템 및 방법
MY166669A (en) * 2011-08-11 2018-07-18 Inventio Ag Function-monitoring of a safety element
EP2567928B1 (de) * 2011-09-06 2013-09-11 Cedes AG Sensor, Sicherungsvorrichtung sowie Aufzugvorrichtung
FI123145B (fi) * 2012-01-23 2012-11-30 Kone Corp Menetelmä ja järjestely kuljetusjärjestelmän toimintakunnon valvomiseksi
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
SG11201508848YA (en) * 2013-05-28 2015-11-27 Inventio Ag Elevator door with a door contact switch
US11175638B2 (en) 2015-11-09 2021-11-16 Otis Elevator Company Self-diagnostic electrical circuit
CN109071164B (zh) * 2016-05-04 2020-06-09 因温特奥股份公司 包括中央控制单元和多个具有优化的故障识别方法的现场设备的人员运送设备
EP3681833B1 (de) * 2017-09-13 2021-11-03 Inventio AG Statusüberprüfung von feldgeräten einer gebäudegebundenen personenbeförderungsanlage

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DE4032033A1 (de) † 1990-10-09 1992-04-16 Siemens Ag Steuerungs- und ueberwachungsverfahren und elektrisches automatisierungssystem fuer eine technische anlage, insbesondere eine schachtanlage
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WO1998045764A1 (de) † 1997-04-07 1998-10-15 Euchner Gmbh & Co. Sicherheitsschalter

Also Published As

Publication number Publication date
JP2004505868A (ja) 2004-02-26
PT1307395E (pt) 2007-02-28
CN1446175A (zh) 2003-10-01
US6732839B2 (en) 2004-05-11
ES2276809T3 (es) 2007-07-01
ES2276809T5 (es) 2010-04-19
CN1232436C (zh) 2005-12-21
DK1307395T3 (da) 2007-02-12
ATE344778T1 (de) 2006-11-15
EP1307395B1 (de) 2006-11-08
WO2002012109A1 (de) 2002-02-14
CA2416902A1 (en) 2003-01-22
CY1105988T1 (el) 2011-04-06
EP1307395A1 (de) 2003-05-07
US20030111300A1 (en) 2003-06-19
AU2001279531B2 (en) 2006-09-07
AU7953101A (en) 2002-02-18
CA2416902C (en) 2010-03-23
IL153936A0 (en) 2003-07-31
DE50111416D1 (de) 2006-12-21

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