US3203506A - Radio communication means between elevator cage and motor control - Google Patents

Radio communication means between elevator cage and motor control Download PDF

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Publication number
US3203506A
US3203506A US217167A US21716762A US3203506A US 3203506 A US3203506 A US 3203506A US 217167 A US217167 A US 217167A US 21716762 A US21716762 A US 21716762A US 3203506 A US3203506 A US 3203506A
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US
United States
Prior art keywords
cage
motor control
communication means
radio communication
elevator cage
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
US217167A
Inventor
Cummins Peter Anthony
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.)
Ace Machinery Ltd
Original Assignee
Ace Machinery Ltd
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 Ace Machinery Ltd filed Critical Ace Machinery Ltd
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Publication of US3203506A publication Critical patent/US3203506A/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/60—Systems for communication between relatively movable stations, e.g. for communication with lift
    • 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
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3423—Control system configuration, i.e. lay-out
    • B66B1/3438—Master-slave control system configuration
    • 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
    • B66B1/3415—Control system configuration and the data transmission or communication within the control system
    • B66B1/3446—Data transmission or communication within the control system
    • B66B1/3461—Data transmission or communication within the control system between the elevator control system and remote or mobile stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/088—Remote control of electric cranes

Definitions

  • This invention relates to an improved means for communicating between relatively fixed and movable members and in particular to a control system for lifts and other installations where a travelling member is con strained to move over a predetermined path.
  • An object of the invention is to provide improved means for transmitting the control signals from the cage or travelling member of a lift, hoist or elevator to the stationary control panel associated with the hoisting mechanism. These signals are normally transmitted over an electric cable, one end of which is attached to the cage or travelling member and the other end to the tower, shaft or other structure in which the cage travels.
  • the invention provides for this purpose an electronic signalling system which requires no metallic connection between the cage and the tower or shaft other than that provided by the hoisting cables and guide rails, thus eliminating the need for the electric cable before mentioned.
  • FIGS. 1 and 2 show diagrammatically the two respective embodiments.
  • FIG. 1 there is attached to one of the inner faces of the shaft or tower 1 and insulated electrically from it, a continuous metallic conductor 2 in the form of a channel or other convenient section to provide rigidity, and running the whole length of the tower.
  • the side of the cage 3 has attached to it and also insulated electrically therefrom a similar metallic conductor 4 of a length approximately equal to the height of the cage.
  • These conductors are positioned so that they are adjacent and separated by a small gap which, however, need not remain precisely constant as the cage travels up and down the shaft.
  • the metallic strip 4 attached to the cage is connected to the output of a transmitter 5 incorporating an electronic oscillator operating at a relatively low radio frequency.
  • the strip 2 associated with the tower or shaft is connected to the input terminal of a receiver 6 tuned to the same frequency.
  • the radio frequency signal or carrier is modulated with a number of audio frequencies each of which is associated with a particular control function.
  • Electronic filters in the receiver 6 separate these audio frequency signals and cause them to operate relays in a motor control box 9 which in turn operate the main power contactors for the lift motor.
  • the electrical supply to the transmitter 8 is preferably taken via the gate lock switch on the cage.
  • the supply itself is most conveniently drawn from a battery although a self contained generator might be employed instead.
  • a length of steel wire rope 10 covered with an insulating material such as nylon is tensioned between the top and bottom of the lift shaft 1 and is connected to the receiver 6.
  • the transmitter 5 is connected to a metal tube 11 mounted on but insulated from the cage 3.
  • the insulated wire 10 passes through this tube and thus provides the capacitive coupling between the cage and tower.
  • an additional safety interlock may be obtained by having a relay operated by the carrier itself so that any failure in the electronic system will result in the cutting off of the main power supply.
  • a lift comprising a tower, a cage adapted to be moved up and down said tower by a motor, motor control means, communication means comprising an electrical conductor tube on said cage extending in the direction of movement of said cage, an electrically insulated conductor passing through said tube and running the length of said lift tower to provide a capacitive coupling between said tube and conductor, a radio frequency transmitter on the cage connected to said tube and a receiver operatively connected to said conductor and said motor control means, a switch assembly for the transmitter mounted on said cage for modulating the transmitter output to produce control signals conveyed by said coupling to the receiver where they are utilized to control said lift motor control means.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Types And Forms Of Lifts (AREA)
  • Elevator Control (AREA)

Description

Aug. 31, 1965 P. A. CUMMINS 3,203,506
RADIO COMMUNICATION MEANS BETWEEN ELEVATOR CAGE AND MOTOR CONTROL Flled Aug. 15, 1962 2 Sheets-Sheet 1 gwqggL 8\ .15 TRANSMITTER "QMOTOR CONTROL I GRECEIVER [Mv/EUToR PETE R ANTHw/V Y COMM/N5 Aug. 31, 1965 P. A. CUMMINS 3,203,505
RADIO COMMUNICATION MEANS BETWEEN ELEVATOR CAGE AND MOTOR CONTROL Filed Aug. 15, 1962 2 Sheets-Sheet 2 7 -41 ge r u rggaL 8\ STRANSMITTER w E x WQMOTOR CONTROL 1 6 RECEIVER PETER Awmwv com/v1 lA/S United States Patent 3,203,506 RADIO COMMUNICATION MEANS BETWEEN ELEVATOR CAGE .A'ND MOTOR CONTROL Peter Anthony Cummins, Aldershot, England, assignor of a joint interest to A.C.E. Machinery Limited, London, England, a British company Filed Aug. '15, 1962, Ser. No. 217,167 Claims priority, application Great Britain, Aug. 16, 1961, 29,5-51/61 1 Claim. (Cl. 187-29) This invention relates to an improved means for communicating between relatively fixed and movable members and in particular to a control system for lifts and other installations where a travelling member is con strained to move over a predetermined path.
An object of the invention is to provide improved means for transmitting the control signals from the cage or travelling member of a lift, hoist or elevator to the stationary control panel associated with the hoisting mechanism. These signals are normally transmitted over an electric cable, one end of which is attached to the cage or travelling member and the other end to the tower, shaft or other structure in which the cage travels.
The invention provides for this purpose an electronic signalling system which requires no metallic connection between the cage and the tower or shaft other than that provided by the hoisting cables and guide rails, thus eliminating the need for the electric cable before mentioned.
Two embodiments of the invention as applied to a lift will now be described with reference to the accompanying drawings wherein FIGS. 1 and 2 show diagrammatically the two respective embodiments.
Referring to FIG. 1 there is attached to one of the inner faces of the shaft or tower 1 and insulated electrically from it, a continuous metallic conductor 2 in the form of a channel or other convenient section to provide rigidity, and running the whole length of the tower. The side of the cage 3 has attached to it and also insulated electrically therefrom a similar metallic conductor 4 of a length approximately equal to the height of the cage. These conductors are positioned so that they are adjacent and separated by a small gap which, however, need not remain precisely constant as the cage travels up and down the shaft.
The metallic strip 4 attached to the cage is connected to the output of a transmitter 5 incorporating an electronic oscillator operating at a relatively low radio frequency. The strip 2 associated with the tower or shaft is connected to the input terminal of a receiver 6 tuned to the same frequency. By virtue of the electrical capacitance existing between the two conductors 2 and 4 a circuit is completed which enables signals to be transmitted without metallic contact taking place. The return circuit is completed through the metal structure of the tower or shaft 1, the hoisting cables 7 and the guide rails (not shown) for the cage 3.
By means of a control unit in the form of a switch 8 (or a push-button set) the radio frequency signal or carrier, is modulated with a number of audio frequencies each of which is associated with a particular control function. Electronic filters in the receiver 6 separate these audio frequency signals and cause them to operate relays in a motor control box 9 which in turn operate the main power contactors for the lift motor.
In order to provide the necessary safety interlock, the electrical supply to the transmitter 8 is preferably taken via the gate lock switch on the cage. The supply itself is most conveniently drawn from a battery although a self contained generator might be employed instead.
The only difference between the embodiment just described and that shown in FIG. 2 concerns the means for making a capacitive coupling between the cage and tower. In the second embodiment, a length of steel wire rope 10 covered with an insulating material such as nylon is tensioned between the top and bottom of the lift shaft 1 and is connected to the receiver 6. The transmitter 5 is connected to a metal tube 11 mounted on but insulated from the cage 3. The insulated wire 10 passes through this tube and thus provides the capacitive coupling between the cage and tower.
In carrying out the invention in its broadest aspect, it is to be understood that any method of modulation of the carrier may be used which is capable of' giving multiple channel control.
In carrying out the invention as applied to a lift, it is further to be understood that an additional safety interlock may be obtained by having a relay operated by the carrier itself so that any failure in the electronic system will result in the cutting off of the main power supply.
I claim:
In a lift comprising a tower, a cage adapted to be moved up and down said tower by a motor, motor control means, communication means comprising an electrical conductor tube on said cage extending in the direction of movement of said cage, an electrically insulated conductor passing through said tube and running the length of said lift tower to provide a capacitive coupling between said tube and conductor, a radio frequency transmitter on the cage connected to said tube and a receiver operatively connected to said conductor and said motor control means, a switch assembly for the transmitter mounted on said cage for modulating the transmitter output to produce control signals conveyed by said coupling to the receiver where they are utilized to control said lift motor control means.
References Cited by the Examiner UNITED STATES PATENTS 2,319,627 5/43 Perlman 179-107 2,505, 144 4/50 Rutherford 179-82 FOREIGN PATENTS 1,042,660 11/5 8 Germany.
811,471 4/ 59 Great Britain.
ORIS L. RADER, Primary Examiner.
WALTER L. LYNDE, Examiner.
US217167A 1961-08-16 1962-08-15 Radio communication means between elevator cage and motor control Expired - Lifetime US3203506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29551/61A GB955616A (en) 1961-08-16 1961-08-16 Improved means for communicating between the cage of a lift and its tower or shaft

Publications (1)

Publication Number Publication Date
US3203506A true US3203506A (en) 1965-08-31

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CH (1) CH384812A (en)
GB (1) GB955616A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467778A (en) * 1965-02-04 1969-09-16 Int Standard Electric Corp Circuit arrangement for power supply and for a controlled frequency-modulated operation of a sub-assembly
US3519105A (en) * 1965-10-13 1970-07-07 Westinghouse Electric Corp Vehicle control
US3569833A (en) * 1968-12-20 1971-03-09 Gen Electric Resonant ring coupling communications system
US3662861A (en) * 1969-08-14 1972-05-16 Whitesons Sales Corp Elevator control dispensing with traveling cables
US3705640A (en) * 1970-02-18 1972-12-12 Gen Electric Canada Signalling system for mine hoists
US3782504A (en) * 1972-12-14 1974-01-01 Reliance Electric Co Multiplex system for elevator control
US4114729A (en) * 1975-10-17 1978-09-19 Linden-Alimak Ab Halt selector system
FR2424672A1 (en) * 1978-04-25 1979-11-23 Funke Huster Elektrizitaets METHOD AND ARRANGEMENT OF INFORMATION TRANSMISSION BETWEEN AN EXTRACTION CAGE AND THE SOIL SURFACE
US4789049A (en) * 1987-04-02 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Signal transmitting equipment for elevator
US4979593A (en) * 1987-08-26 1990-12-25 Mitsubishi Denki Kabushiki Kaisha Elevator controller
WO2002059029A1 (en) * 2001-01-06 2002-08-01 Robert Nicholas Kaye Wireless control for elevator system
US6478352B1 (en) 1999-11-24 2002-11-12 David Frank Fredrickson Article mover
US6481531B1 (en) * 2001-04-27 2002-11-19 Hitachi, Ltd. Elevator communications apparatus
US6484849B2 (en) * 2001-02-28 2002-11-26 Otis Elevator Company Elevator speed measurement system including reflective signal technology for making speed determinations
EP1396455A1 (en) * 2001-05-30 2004-03-10 Hitachi, Ltd. Elevator system
WO2004035449A1 (en) * 2002-10-15 2004-04-29 Otis Elevator Company Elevator wireless communication infrastructure using piconet modules
CN101927921B (en) * 2009-06-26 2012-10-17 中国恩菲工程技术有限公司 Mine cage control equipment
US10787341B2 (en) 2015-07-01 2020-09-29 Otis Elevator Company Elevator control system and elevator system having inspection control station

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8103312L (en) * 1981-05-26 1982-11-27 Linden Alimak Ab DEVICE ON THE TEE RISK LIFTS
GB2122573B (en) * 1982-06-01 1985-11-13 Anglo Amer Corp South Africa Lift cage door status indication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319627A (en) * 1940-12-04 1943-05-18 Hubert J La Joie System and apparatus for sound reception
US2505144A (en) * 1948-02-27 1950-04-25 Richmond L Rutherford Signaling system for use in mine shafts
GB811471A (en) * 1955-07-15 1959-04-08 Antonio Castilla Lopez Electrical-signal transmitter and receiver system for communication between vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2319627A (en) * 1940-12-04 1943-05-18 Hubert J La Joie System and apparatus for sound reception
US2505144A (en) * 1948-02-27 1950-04-25 Richmond L Rutherford Signaling system for use in mine shafts
GB811471A (en) * 1955-07-15 1959-04-08 Antonio Castilla Lopez Electrical-signal transmitter and receiver system for communication between vehicles

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467778A (en) * 1965-02-04 1969-09-16 Int Standard Electric Corp Circuit arrangement for power supply and for a controlled frequency-modulated operation of a sub-assembly
US3519105A (en) * 1965-10-13 1970-07-07 Westinghouse Electric Corp Vehicle control
US3569833A (en) * 1968-12-20 1971-03-09 Gen Electric Resonant ring coupling communications system
US3662861A (en) * 1969-08-14 1972-05-16 Whitesons Sales Corp Elevator control dispensing with traveling cables
US3705640A (en) * 1970-02-18 1972-12-12 Gen Electric Canada Signalling system for mine hoists
US3782504A (en) * 1972-12-14 1974-01-01 Reliance Electric Co Multiplex system for elevator control
US4114729A (en) * 1975-10-17 1978-09-19 Linden-Alimak Ab Halt selector system
FR2424672A1 (en) * 1978-04-25 1979-11-23 Funke Huster Elektrizitaets METHOD AND ARRANGEMENT OF INFORMATION TRANSMISSION BETWEEN AN EXTRACTION CAGE AND THE SOIL SURFACE
US4789049A (en) * 1987-04-02 1988-12-06 Mitsubishi Denki Kabushiki Kaisha Signal transmitting equipment for elevator
US4979593A (en) * 1987-08-26 1990-12-25 Mitsubishi Denki Kabushiki Kaisha Elevator controller
US6478352B1 (en) 1999-11-24 2002-11-12 David Frank Fredrickson Article mover
WO2002059029A1 (en) * 2001-01-06 2002-08-01 Robert Nicholas Kaye Wireless control for elevator system
US6484849B2 (en) * 2001-02-28 2002-11-26 Otis Elevator Company Elevator speed measurement system including reflective signal technology for making speed determinations
US6481531B1 (en) * 2001-04-27 2002-11-19 Hitachi, Ltd. Elevator communications apparatus
EP1396455A1 (en) * 2001-05-30 2004-03-10 Hitachi, Ltd. Elevator system
EP1396455A4 (en) * 2001-05-30 2009-12-23 Hitachi Ltd Elevator system
WO2004035449A1 (en) * 2002-10-15 2004-04-29 Otis Elevator Company Elevator wireless communication infrastructure using piconet modules
US20060108181A1 (en) * 2002-10-15 2006-05-25 Luiz Bacellar Elevator wireless communication infrastructure using piconet modules
US7426981B2 (en) * 2002-10-15 2008-09-23 Otis Elevator Company Elevator wireless communication infrastructure using piconet modules
CN101927921B (en) * 2009-06-26 2012-10-17 中国恩菲工程技术有限公司 Mine cage control equipment
US10787341B2 (en) 2015-07-01 2020-09-29 Otis Elevator Company Elevator control system and elevator system having inspection control station

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Publication number Publication date
CH384812A (en) 1965-02-26
GB955616A (en) 1964-04-15

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