EP1921038A1 - Système de commande pour ascenseur - Google Patents

Système de commande pour ascenseur Download PDF

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Publication number
EP1921038A1
EP1921038A1 EP05776101A EP05776101A EP1921038A1 EP 1921038 A1 EP1921038 A1 EP 1921038A1 EP 05776101 A EP05776101 A EP 05776101A EP 05776101 A EP05776101 A EP 05776101A EP 1921038 A1 EP1921038 A1 EP 1921038A1
Authority
EP
European Patent Office
Prior art keywords
elevator
safety device
control device
electronic safety
abnormality
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
EP05776101A
Other languages
German (de)
English (en)
Other versions
EP1921038A4 (fr
EP1921038B1 (fr
Inventor
Tatsuo Matsuoka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP1921038A1 publication Critical patent/EP1921038A1/fr
Publication of EP1921038A4 publication Critical patent/EP1921038A4/fr
Application granted granted Critical
Publication of EP1921038B1 publication Critical patent/EP1921038B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to an elevator control system, including an electronic safety device for determining presence or absence of an abnormality in an elevator and a control device for controlling an operation of the elevator based on information from the electronic safety device.
  • a base transceiver is electrically connected to the control device, and a transceiver is electrically connected to each equipment.
  • a token is outputted from the base transceiver.
  • the token outputted from the base transceiver is passed onto the transceiver of each equipment in succession and then returns to the base transceiver.
  • the token is blocked by the broken device, so the token does not return to the base transceiver.
  • the operation of the elevator is stopped by the control device (see Patent Document 1).
  • Patent Document 1 JP 2003-40543 A
  • the device can be provided as an electronic safety device for electrically determining presence or absence of an abnormality in the elevator and transmitting information to the control device.
  • the present invention has been made to solve the above-mentioned problem, and it is therefore an object of the present invention to obtain an elevator control system, capable of more reliably preventing a normal operation of the elevator from being continued while an electronic safety device is kept electrically disconnected from a control device.
  • An elevator control system includes: an electronic safety device for determining presence or absence of an abnormality in an elevator and outputting a confirmation response signal when the electronic safety device receives a predetermined confirmation request signal; and a control device, which outputs the confirmation request signal to the electronic safety device during an operation of the elevator and detects presence or absence of reception of the confirmation response signal from the electronic safety device to determine presence or absence of an abnormality in an electrical connection with the electronic safety device, for controlling the operation of the elevator based on the determination on the presence or absence of the abnormality in the elevator and the determination on the presence or absence of the abnormality in the electrical connection.
  • Fig. 1 is a structural view showing an elevator according to Embodiment 1 of the present invention.
  • a hoistway 1 in a hoistway 1, there are provided a car 2 and a counterweight 3.
  • a hoisting machine (drive device) 4 for raising and lowering the car 2 and the counterweight 3 and a deflector sheave 5 arranged in the vicinity of the hoisting machine 4.
  • the hoisting machine 4 has a hoisting machine main body 6 including a motor and a drive sheave 7 rotated by the hoisting machine main body 6.
  • a plurality of main ropes 8 are looped around the drive sheave 7.
  • the car 2 and the counterweight 3 are suspended in the hoistway 1 by the main ropes 8.
  • the car 2 and the counterweight 3 are raised and lowered in the hoistway 1 by rotation of the drive sheave 7.
  • a governor sheave 9 In the upper portion of the hoistway 1, there is provided a governor sheave 9 and in a lower portion of the hoistway 1, there is provided a tension pulley 10. A governor rope 11 moved together with the car 2 is looped around the governor sheave 9 and the tension pulley 10. Therefore, the governor sheave 9 and the tension pulley 10 are rotated when the car 2 moves.
  • the governor sheave 9 is provided with an encoder (detection sensor) 12 for generating a signal corresponding to the rotation of the governor sheave 9.
  • an encoder detection sensor
  • an electronic safety device 14 for generating a signal corresponding to the rotation of the governor sheave 9.
  • Fig. 2 is a structural view of the electronic safety device 14 and the control device 15 of Fig. 1 .
  • each of the electronic safety device 14 and the control device 15 is individually mounted on a support base in the hoistway 1.
  • the electronic safety device 14 and the control device 15 are mounted in the hoistway 1, respectively, thereby being electrically connected to each other through a communication line 19.
  • the electronic safety device 14 includes a safety device CPU (safety device processing portion) 16 for determining presence or absence of the abnormality in the elevator. Further, the control device 15 includes a safety circuit 17 for stopping the operation of the elevator when the abnormality in the elevator occurs and a control device CPU (control device processing portion) 18 for controlling the operation of the eleavtor.
  • a safety device CPU safety device processing portion
  • control device processing portion control device processing portion
  • the safety device CPU 16 performs the determination of presence or absence of the abnormality in the elevator (determination of presence or absence of an abnormality of the electronic safety device 14 itself, presence or absence of an abnormality of a speed of the car 2, and the like) based on information from various detection sensors such as the encoder 12. Further, when the safety device CPU 16 performs the determination that the abnormality in the elevator does not occur and the state of the elevator is normal (state normality determination), the safety device CPU 16 turns on an internal circuit to output a normal signal 20 to the safety circuit 17. Further, when the safety device CPU 16 performs the determination that the abnormality in the elevator occurs (state abnormality determination), the safety device CPU 16 turns off the internal circuit to stop the output of the normal signal 20.
  • the safety circuit 17 When the normal signal 20 from the safety device CPU 16 is inputted to the safety circuit 17, the safety circuit 17 is not actuated.
  • the operation of the elevator is controlled by the control device CPU 18 to be a normal operation. Further, the safety circuit 17 is actuated by stoppage of the input of the normal signal 20 from the safety device CPU 16. As a result, the operation of the elevator is forcedly stopped.
  • the control device CPU 18 In order to determine presence or absence of an abnormality of the electrical connection between the electronic safety device 14 and the control device 15, the control device CPU 18 outputs predetermined confirmation request signals (electrical signals) to the safety device CPU 16 through the communication line 19 during the operation of the elevator.
  • the confirmation request signals are outputted at predetermined time intervals.
  • the safety device CPU 16 When the safety device CPU 16 receives the confirmation request signal from the control device CPU 18, the safety device CPU 16 outputs a confirmation response signal (electrical signal) to the control device CPU 18 through the communication line 19. Each confirmation response signal is outputted from the safety device CPU 16 every time the safety device CPU 16 receives the confirmation request signal.
  • connection normality determination when the control device CPU 18 receives the confirmation response signal from the safety device CPU 16 within a predetermined time after the output of the confirmation request signal, the control device CPU 18 performs a determination that there is no abnormality in the electrical connection between the electronic safety device 14 and the control device 15 (connection normality determination). Further, when the control device CPU 18 does not receive the confirmation response signal from the safety device CPU 16 even after the predetermined time from the output of the confirmation request signal, the control device CPU 18 performs a determination that there occurs an abnormality in the electrical connection between the electronic safety device 14 and the control device 15 (connection abnormality determination). That is, based on presence or absence of the reception of the confirmation response signal from the safety device CPU 16, the control device CPU 18 determines whether or not the electrical connection between the electronic safety device 14 and the control device 15 is abnormal.
  • the control device CPU 18 When the control device CPU 18 performs the connection normality determination, the control device CPU 18 allows the normal operation of the elevator to be continued. Further, while the control device CPU 18 is performing the connection abnormality determination, the control device CPU 18 stops the operation of the elevator even if the normal signal 20 is inputted to the safety circuit 17.
  • the elevator control system includes the electronic safety device 14 and the control device 15.
  • Fig. 3 is a flow chart showing the connection confirmation operation of the control device CPU 18 of Fig. 2 .
  • the control device CPU 18 determines presence or absence of the abnormality in the electrical connection between the electronic safety device 14 and the control device 15
  • the control device CPU 18 outputs the confirmation request signal to the safety device CPU 16 (S1).
  • the control device CPU 18 detects whether or not the control device CPU 18 has received the confirmation response signal from the safety device CPU 16 (S2).
  • control device CPU 18 determines whether or not the predetermined time has passed (S4).
  • the control device CPU 18 repeats the determination on whether or not the control device CPU 18 has received the confirmation response signal from the safety device CPU 16 until the predetermined time passes. After that, in a case where there is no reception of the confirmation response signal from the safety device CPU 16 even after the predetermined time has passed, the control device CPU 18 performs the connection abnormality determination (S5), and the connection confirmation operation of the control device CPU 18 ends.
  • the safety device CPU 16 When, for example, the speed of the car 2 becomes abnormal and the safety device CPU 16 performs the state abnormality determination, the input of the normal signal 20 to the safety circuit 17 is stopped. As a result, the safety circuit 17 is actuated and the operation of the elevator is forcedly stopped.
  • the control device CPU 18 performs the connection abnormality determination, and even when the input of the normal signal 20 to the safety circuit 17 is continued, the operation of the elevator is stopped.
  • the control device 15 outputs the confirmation request signal to the electronic safety device 14 during the operation of the elevator and determines whether or not the electrical connection with the electronic safety device 14 is abnormal based on presence or absence of the reception of the confirmation response signal from the electronic safety device 14. Therefore, it is possible to determine whether or not the electronic safety device 14 is electrically disconnected from the control device 15 with more reliability. Accordingly, even in a case where the reception of the normal signal 20 by the electronic circuit 17 is forcedly continued by the short-circuiting treatment with respect to the control device 15, it is possible to prevent the normal operation of the elevator from being continued when the electronic safety device 14 is actually disconnected electrically from the control device 14. As a result, it is possible to prevent the normal operation of the elevator during repair of the electronic safety device 14, thereby making it possible to increase the soundness of the operation of the elevator.
  • control device 15 stops the operation of the elevator when the control device 15 determines that the electrical connection with the electronic safety device 14 is abnormal. Therefore, it is possible to further increase the soundness of the operation of the elevator.
  • the control device CPU 18 detects presence or absence of the reception of the confirmation response signal from the electronic safety device 14, thereby determining presence or absence of the abnormality in the electrical connection between the electronic safety device 14 and the control device 15.
  • a microswitch detection device
  • the control device CPU 18 may determine the presence or absence of the abnormality in the electrical connection between the electronic safety device 14 and the control device 15 based on information from the microswitch. That is, the microswitch for detecting the presence or absence of the abnormality in the electrical connection between the electronic safety device 14 and the control device 15 may be provided to the support base.
  • the microswitch is turned on by coming into contact with the electronic safety device 14 when the electronic safety device 14 is mounted on the support base, and the microswitch is turned off when the electronic safety device 14 is removed from the support base. Further, in the control device CPU 18, when the microswitch is on, it is determined that there is no abnormality in the electrical connection between the electronic safety device 14 and the control device 15, and when the microswitch is off, it is determined that there occurs the abnormality in the electrical connection between the electronic safety device 14 and the control device 15.
  • control device CPU 18 can determine the presence or absence of the abnormality in the electrical connection between the electronic safety device 14 and the control device 15 based on information from the microswitch, so it is possible to prevent a situation in which the normal operation of the elevator is performed when the electronic safety device 14 is being removed from the support base. Therefore; it is possible to increase the soundness of the operation of the elevator.
  • the control device CPU 18 stops the operation of the elevator when performing the connection abnormality determination, but may cause the operation of the elevator during the connection abnormality determination to be a low-speed operation. In this case, regardless of presence or absence of the reception of the normal signal 20 by the electronic circuit 17, the control device CPU 18 causes the operation of the elevator to be the low-speed operation when performing the connection abnormality determination. Further, in the low-speed operation by the control device CPU 18, the speed of the car 2 is made lower than that in the normal operation, that is, a level of speed not interfering the operation of the elevator even when the electronic safety device 14 does not function.
  • the control device CPU 18 when performing the connection abnormality determination, causes the speed of the car 2 to be lower than that in the normal operation, thereby making it possible to prevent the normal operation of the elevator from being continued while the electronic safety device 14 is kept electrically disconnected from the control device 15. Further, it is possible to enhance an operational efficiency of the elevator.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
EP05776101.7A 2005-08-31 2005-08-31 Système de commande pour ascenseur Expired - Fee Related EP1921038B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/015872 WO2007026416A1 (fr) 2005-08-31 2005-08-31 Système de commande pour ascenseur

Publications (3)

Publication Number Publication Date
EP1921038A1 true EP1921038A1 (fr) 2008-05-14
EP1921038A4 EP1921038A4 (fr) 2013-03-06
EP1921038B1 EP1921038B1 (fr) 2014-02-12

Family

ID=37808520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05776101.7A Expired - Fee Related EP1921038B1 (fr) 2005-08-31 2005-08-31 Système de commande pour ascenseur

Country Status (4)

Country Link
EP (1) EP1921038B1 (fr)
JP (1) JP5068534B2 (fr)
CN (1) CN101068741B (fr)
WO (1) WO2007026416A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011502908A (ja) * 2007-07-17 2011-01-27 インベンテイオ・アクテイエンゲゼルシヤフト エレベータ装置の監視方法
JP5523455B2 (ja) * 2009-06-23 2014-06-18 三菱電機株式会社 エレベータ装置
JP2013046939A (ja) * 2011-08-29 2013-03-07 Disco Corp 研削装置
EP3034445A1 (fr) * 2014-12-18 2016-06-22 Kone Corporation Appareil de configuration et circuit de sécurité principal pour un système d'ascenseur et système d'ascenseur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173814B1 (en) * 1999-03-04 2001-01-16 Otis Elevator Company Electronic safety system for elevators having a dual redundant safety bus
EP1864935A1 (fr) * 2005-03-31 2007-12-12 Mitsubishi Denki Kabushiki Kaisha Appareil d'ascenseur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742470A (en) * 1980-08-28 1982-03-10 Mitsubishi Electric Corp Safety device for elevator
JPH04261243A (ja) * 1991-01-28 1992-09-17 Mitsubishi Electric Corp エレベータの信号伝送装置
JPH07240803A (ja) * 1994-03-01 1995-09-12 Toshiba Erebeeta Technos Kk エレベータの遠隔監視システム
JP3529291B2 (ja) * 1998-12-16 2004-05-24 東芝エレベータ株式会社 エレベータ伝送制御装置
JP4553535B2 (ja) * 2001-09-28 2010-09-29 三菱電機株式会社 エレベータ装置
JP2005104596A (ja) * 2003-09-26 2005-04-21 Toshiba Elevator Co Ltd エレベーターの制御装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6173814B1 (en) * 1999-03-04 2001-01-16 Otis Elevator Company Electronic safety system for elevators having a dual redundant safety bus
EP1864935A1 (fr) * 2005-03-31 2007-12-12 Mitsubishi Denki Kabushiki Kaisha Appareil d'ascenseur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007026416A1 *

Also Published As

Publication number Publication date
WO2007026416A1 (fr) 2007-03-08
EP1921038A4 (fr) 2013-03-06
JPWO2007026416A1 (ja) 2009-03-05
CN101068741B (zh) 2012-01-11
CN101068741A (zh) 2007-11-07
EP1921038B1 (fr) 2014-02-12
JP5068534B2 (ja) 2012-11-07

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