US3851735A - Elevator system - Google Patents

Elevator system Download PDF

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Publication number
US3851735A
US3851735A US00340614A US34061473A US3851735A US 3851735 A US3851735 A US 3851735A US 00340614 A US00340614 A US 00340614A US 34061473 A US34061473 A US 34061473A US 3851735 A US3851735 A US 3851735A
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United States
Prior art keywords
control means
data
multiplexing
elevator
car
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Expired - Lifetime
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US00340614A
Inventor
C Winkler
A Mandel
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CBS Corp
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Westinghouse Electric Corp
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Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US00340614A priority Critical patent/US3851735A/en
Priority to US00340620A priority patent/US3828892A/en
Priority to CA193,092A priority patent/CA995373A/en
Priority to BR180274A priority patent/BR7401802D0/en
Priority to JP49027827A priority patent/JPS49126053A/ja
Priority to FR7408297A priority patent/FR2221379B1/fr
Priority to BE141940A priority patent/BE812216A/en
Priority to FR7408298A priority patent/FR2221380B1/fr
Priority to FR7408299A priority patent/FR2221381B1/fr
Application granted granted Critical
Publication of US3851735A publication Critical patent/US3851735A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • B66B1/468—Call registering systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/02—Control systems without regulation, i.e. without retroactive action
    • B66B1/06—Control systems without regulation, i.e. without retroactive action electric
    • B66B1/14—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B2201/00—Aspects of control systems of elevators
    • B66B2201/40—Details of the change of control mode
    • B66B2201/46—Switches or switchgear
    • B66B2201/4607—Call registering systems
    • B66B2201/4623—Wherein the destination is registered after boarding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B2201/00—Aspects of control systems of elevators
    • B66B2201/40—Details of the change of control mode
    • B66B2201/46—Switches or switchgear
    • B66B2201/4607—Call registering systems
    • B66B2201/463—Wherein the call is registered through physical contact with the elevator system

Definitions

  • An elevator system including an elevator car having a first control disposed in the car, and a second control located remotely. Car calls are stored and serialized in the first control and sent to the second control at a first predetermined rate. Resets are serialized in the second control and sent to the first control at the first predetermined rate.
  • a plurality of cars are under control of a system processor, data is exchanged between the system processor and the second controls of the plurality of cars at a second data rate, which is a predetermined multiple faster than the first predetermined rate.
  • COMPARATOR COUNTER S COMPARATOR I B IB4 4 INHIBIT INHIBIT 472 LOGIC I LOGIC IF ISO PT CAR CALLS SELECTOR SELECTOR ,CAR CALLS CAR A CAR A I v CAR B T CAR B K IO6' F IO4' IOB' IIO' FIG.4A
  • PATENTELBEB are SHEET 07 HF 27 2925 zoizmxwnm PATENTELEEB 31914 SHEET 09 0F 27 a d Q d c a :5 d 8% I mowm Kill] Sum J 5% IJIL momm Fij 6% FL 8% mNGE PATENTEL 553 74 sum 1011f 27 PATENTELBEB M 3.851.735

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Control (AREA)

Abstract

An elevator system including an elevator car having a first control disposed in the car, and a second control located remotely. Car calls are stored and serialized in the first control and sent to the second control at a first predetermined rate. Resets are serialized in the second control and sent to the first control at the first predetermined rate. When a plurality of cars are under control of a system processor, data is exchanged between the system processor and the second controls of the plurality of cars at a second data rate, which is a predetermined multiple faster than the first predetermined rate.

Description

Winkler et a1.
[11] 3,851,735 Dec.3,1974
1 1 ELEVATOR SYSTEM [75] Inventors: Charles L. Winklert Alan F.
Mandel, both of Pittsburgh, Pa.
[73] Assignee: Westinghouse Electric Corporation,
Pittsburgh, Pa.
[22] Filed: Mar. 12, 1973 [21] App]. N0.: 340,61f1
TO. CAR CONTROLLERS OF REMAINWG M R TR R .RESET I SYSTEM PROCESSOR Primary Examiner-Robert K. Schaefer Assistant Examiner-W. E. Duncanson, Jr. Attorney, Agent, or Firm-D. R. Lackey [57] ABSTRACT An elevator system including an elevator car having a first control disposed in the car, and a second control located remotely. Car calls are stored and serialized in the first control and sent to the second control at a first predetermined rate. Resets are serialized in the second control and sent to the first control at the first predetermined rate. When a plurality of cars are under control of a system processor, data is exchanged between the system processor and the second controls of the plurality of cars at a second data rate, which is a predetermined multiple faster than the first predetermined rate.
18 Claims, 42 Drawing Figures INTERFACE CORRIDOR CALL EfimcAmcceL m TIPLEXER 8 ASSIGNMENT LOGIC SYNC CLOCK SET 8 MEMORY B SERIALIZER STATION CONTROL CAR SIGNAL CONTROL MASTER TIMING LCC LCS TIPLEXER I 5 ASSIGNMENT CAR 8- PENTHOUSE SYNC 'cLocK .sET'a SIGNALS CAR CALL MEMORY a J PARALLEL CAR SIGNALS STATION Loo PATENTEG 3'974 3,851 .735
SHEEI 01 0f 2'I TIMING I 46 TIMING 1 I I ll CORRIDOR REMAINING CARS CALL SYSTEM OF BANK 1 CONTROL PROCESSOR 4 INTERFACE I l4 G I a- 56 TMIIN '3 IG- 30m LANDING I LIMIT 6 62 AR CA -L SWITCHES F CONTROL IN E L y HATCHWAY i TIMING 34 5 E 44 T I v 0 -36 EH T0 DOOR FLOOR IIALL 56 883 OPERATOR SELECTOR LANTERNs V 7 2nd LANDING OPERATOR I L54 s MOTOR i SPEED -DISTANCE CONTROLLER' PATTERN PULSES 4O GENERATOR QP 50/ 48 24 I I FIG.|.
5 lst LANDING PULSE DETECTOR \64 F 4 5 Q 8 2 PULSE DETECTOR H62. CORRIDOR CALLS {I38 "6 we DOWN CORRIDOR cALLs ABNORMAL EMT j (PARALLEL) I CONDITIONS IIB- I02 I I INHIBITS(PARALLEL) INHIBITS(PARALLEL) PR c sFs R I24- IQ l26' !28,||4,L I30 #434 I /-|36 I I I QL T /m3 Izo A CAR CALLS SECLAERCTAOR DOWN SELECTOR v CAR CALLS A A C R CORRIDOR CALLS CAR 5 CAR B Ioe Io4 (PARALLEL) Hos IIo PATENTL 31974 3,851,735
SHEET 02 or 27 CORRIDOR (B8 CALLS H4 I20 ABNORMAL EMT 42 CONDITIONS E A 6%1UP8IE2WN CORRIDOR CALLS S RI L I523 f SERIAL INHIBITS- v Q E EE'S SERIAL INHIBITS SERIAL UP CALLS l 1MB L 1&2 l l SERIAL H50 1 I CAR CALLS SELECTOR DOwN SELECTOR CAR CALLS CAR A CAR A CALLS CAR B CAR B Ioe IO4 IOB' \IIO' FIG3 CORRIDOR [I39 I CALLS ABNORMAL VTT IG O CONDITIONS SYSTEM PROCESSOR l62 ASSIGNMENT ASSIGNMENT REGISTER REGISTER- CAR A A FLOOR A ADDRESS A |75- B SCAN B I LIT? COMPARATOR COUNTER S COMPARATOR I =B IB4 4 INHIBIT INHIBIT 472 LOGIC I LOGIC IF ISO PT CAR CALLS SELECTOR SELECTOR ,CAR CALLS CAR A CAR A I v CAR B T CAR B K IO6' F IO4' IOB' IIO' FIG.4A
PAIEIIIEIIEI BIIII SHEET 0% BF 27 CORRIDOR I CALLS I80 ABNORMAL EMT I42 CONDITIONS I84 I44 I46 5 FLOOR F I SYSTEM I LOOR B 8 PROCESSOR. fi ggg ASSIGNMENT ASSIGNMENT |90 REGISTER REGISTER .CAR A CAR B I85. B SCAN B I87 \COMPARATOR COUNTER COMPARATOR A B1A=B1 PA B A B1 PA=BPA B INHIBIT INHIBIT LOGIC LOGIC l92 fi v I94 ISO I CAR CALLS SELECTOR I SELECTOR CAR CALLS CARA" CARA -CARB CARB \I l I I I I 06 I04 I08 IIO FIG. 5
CORRIDOR 2 I38 CALLS I @2' ABNORMAL CONDITIONS SERIAUZER SYSTEM I88 .I F PROCESSOR ASSIGVMENT REGISTER ENABLE! 7 CAR A LINE l8 5 I IS4 SCAN COMPARATOR COUNTER L r INHIBIT 1 REAO ONL d LOGIC MEMORY I48 CAR CALLS CAR A (FADO- FAD e) PATENIEIZUEB 3W 3.851.735
- SHEET us or z 7 v FIG.6.
UP CORRIDOR CALL=I DOWN CORRIDOR CALL=I QINHIBITED &
FLOOR ADDRESS I I I ADVANCED CAR POSITION MOOO O I O I MODI 0 O l I 2I2 SYSTEM PROCESSOR CORRIDOR cALLs REsET INFO RESETS/ 2|8 FIG. 7.
CAR CALL RESET 2'0 FLOOR E E SELECTOR. R 8 TS I CAR /-2l6 PENTHOUSE CAR CALLS CONTROLLER IgOI P LEE gE j/TRAvELlNG CABLE222 MU LTI PLEXED ULTIPLEXED CAB A VLL WS EI S \\\*T-/OAR cALLs a CAR SIGNALS 228 CAR CALLS-SERIALIZED PUSH BUTTONS,
CAR SIGNALS MULTIPLEXER MEMORIES, L 226V 'L224 asERIALIzER JVOAR sTATIoN 22g REsETs-sERIALIzEb CAR cALI I-OTHER cAR SIGNAL-s! LOw SPEED LINK 4i Z R' FIG. IO. MONITORING a COMMAND SIGNALS- HIGH SPEED LINK TIME |+BAs|c DATA TRANsMIssION cYcLE IZMS.) TIMING DIAGRAM-DUAL DATA TRANSMISSION SYSTEM RESETS PAIENIL U LILb SYSTE M PROCESSOR CORRIDOR CA LLS SHEET us 0F 27 CAR FLOOR SELECTOR CALL SET
\REsET INI-"o,
CAR CALLs MULTIPLEXED CAR MULTIPLEXED CAR L RESET? EsETs CAR CONTROLLER CALL SETS CAR SIGNALS FIG.8.
PENTHOUSE MULTIPLEXED CAR CALLS 8I CAR SIGNALS AUXILIARY MASTER CAR CONTROLLER SERIALIZER PUSHBUTTONS, M E M OR I ES BI REsETs-sERIALIzEDj' MULT'PLEXER SERIA I L CORRIDOR CAR CALLS -SER IALIZED PUSHBUTTONS, MEMORIES. 8 SERIALIZER CAR STATION Z2 I L SET LINE TIME MDMULTIPLEXEDV HIGH SPEED SYSTEM I I RESETS-SERIALIZED CAR CALLS-SERIALIZED sERIAL sET LINE FIG.9
PROCESSOR TIME MULTIPLEXED HIGH SPEED LINKS PENTHOUSE I INTERFACE I CONTROLLER I 1 i &
CAR
- CONTROLLER CAR CAR CONTROLLER CAR CONTROLLER CORRIDOR PUSHBUTTONS LINKS TIME MULTIPLEXED LOW SPEED CAR MULTIPLEXED LOW SPEED LINKS L456 CAR CAR STATB'ION STATION C CAR sT T IoN PATENTELBEB are SHEET 07 HF 27 2925 zoizmxwnm PATENTELEEB 31914 SHEET 09 0F 27 a d Q d c a :5 d 8% I mowm Kill] Sum J 5% IJIL momm Fij 6% FL 8% mNGE PATENTEL 553 74 sum 1011f 27 PATENTELBEB M 3.851.735
sum 1n er 27 CALL FF OUTPUT CHANNEL e s 3 FIGJ8 PATENTEL 31974 3.851.735
SHEET 16 HF 27 RCVR TRANS 672 1.0503) RCVR CAR 674 SELECTOR ,544 S/R I MEMORY L 5 D I C U RCVR INPUT CHANNEL 9 F|G.l7
EMT TRANS isle) TRANS LC8(B)' ,544
t: MEMORY REG|STER MUL. I
TRANS ce(c) I I ess ,sseLCBD, RCVR. TRANS PATENTEL 3 974 OOI OOOO
DATA LINK LCl HIGH SPEED SCAN OOOO K02 O O I KOI KPSOOOOOOOOI FIG. l9
N D m E T wmm T m M x M EM E S F P E A l 3 .5 .7 I 3 4 O A B 234 56789 DIRIM I$WBI 2 22 T B FE 1 m qQ summw 2mm mJmqzm $004k m 340 1005109 2 OQ 2 MILLISECONDS

Claims (18)

1. An elevator system, comprising: a structure having a plurality of landings, at least one elevator car mounted for movement relative to said structure to serve the landings, said at least one elevator car including first control means disposed in the elevator car, second control means disposed at a point remote from the elevator car, and first data link means interconnecting said first and second control means, said first control means including means providing data for said second control means, means storing said data, and first multiplexing means, said first multiplexing means time multiplexing said stored data to said second control means over said first data link means at a first predetermined rate.
2. The elevator system of claim 1 including scan counter means which repetitively counts through a predetermined group of numbers at the first predetermined rate to provide a plurality of scan slots, with the landings of the structure being assigned to different scan slots, and wherein the data provided by the first control means which relates to specific landings is multiplexed by the first multiplexing means into the scan slot assigned to the landing that the data is associated with.
3. The elevator system of claim 1 wherein the first control means includes car call registering means for passengers in the elevator car to register their requests for service to the various landings.
4. The elevator system of claim 3 wherein the means for storing the data provided by the first control means includes memory means for each landing of the structure to be served by the at least one elevator car, each of said memory means being set from a first condition to a second condition when a passenger registers a request on the car call registering means for service to the landing associated with the memory means.
5. An elevator system, comprising: a structure having a plurality of landings, at least one elevator car mounted for movement relaTive to said structure to serve the landings, said at least one elevator car including first control means disposed in the elevator car, said first control means including car call registering means for passengers in the elevator car to register their requests for service to the various landings, second control means disposed at a point remote from the elevator car, first data link means interconnecting said first and second control means, said first control means including means providing data for said second control means, means storing said data including memory means for each landing of the structure to be served by the at least one elevator car, each of said memory means being set from a first condition to a second condition when a passenger registers a request on the car call registering means for service to the landing associated with the memory means, and first multiplexing means, said first multiplexing means time multiplexing said stored data to said second control means over said first data link means at a first predetermined rate, said second control means including reset means for providing car call reset data, and second multiplexing means said second multiplexing means time multiplexing said car call reset data to said first control means over said first data link means at the first predetermined rate, said car call reset data resetting a set memory means to its first condition.
6. The elevator system of claim 5 including scan counter means which repetitively scans through a predetermined group of numbers at the first predetermined rate, to provide a plurality of scan slots, with the landings of the structure being assigned to different scan slots, and wherein the landing related data provided by the first and second control means is multiplexed by the first and second multiplexing means, respectively, into the scan slots assigned to the landings the data is associated with.
7. An elevator system, comprising: a structure having a plurality of landings, a plurality of elevator cars mounted for movement relative to said structure to serve the landings, each of said elevator cars including first control means disposed in the elevator car, second control means disposed at a point remote from the elevator car, and first data link means interconnecting said first and second control means, said first control means including means providing data for said second control means, means storing said data, and first multiplexing means, said first multiplexing means time multiplexing said stored data to said second control means over said first data link means at a first predetermined rate, third control means for directing the movement of the plurality of elevator cars, and second data link means interconnecting said third control means with the second control means of each of the plurality of cars, said second control means including second multiplexing means for time multiplexing data received from the first control means over the first data link means to the third control means over the second data link means at a second predetermined rate which exceeds the first data rate.
8. The elevator system of claim 7 wherein the second control means provides data for the third control means and the second multiplexing means time multiplexes this data to the third control means along with the data from the first control means.
9. The elevator system of claim 7 wherein the third control means provides data for each of the elevator cars, and including third multiplexing means for time multiplexing this data to the second control means of the elevator cars over the second data link means at the second predetermined rate.
10. The elevator system of claim 7 including scan counter means which repetitively scans through a predetermined group of numbers at the first predetermined rate to provide a plurality of basic scan slots, with the landings of the structure being assigned to different basic scan slots, wherein The second predetermined data rate is a predetermined multiple of the first predetermined data rate, providing a predetermined plurality of high speed scan slots during each basic scan slot.
11. The elevator system of claim 10 wherein landing related data provided by the first, second and third control means is multiplexed by the first, second and third multiplexing means, respectively, into the basic scan slots assigned to the landings the data is associated with, with landing related data in the high speed scan slots occurring during the basic scan slot which is assigned to the associated landing.
12. An elevator system, comprising: a structure having a plurality of landings, at least one elevator car mounted for movement relative to said structure to serve the landings, said at least one elevator car including first control means disposed in the elevator car, second control means disposed at a point remote from the elevator car, and first data link means interconnecting said first and second control means, said first control means including means providing data for said second control means, means storing said data, and first multiplexing means, said first multiplexing means time multiplexing said stored data to said second control means over said first data link means at a first predetermined rate, said data provided by the first control means being at a first predetermined voltage level, means increasing the voltage level of the data to a second voltage level prior to transmitting it to the second control means, and means in the second control means for reducing the voltage level.
13. The elevator system of claim 9 wherein the second control means includes fourth multiplexing means for time multiplexing the data received from the third control means to the first control means at the first predetermined data rate.
14. An elevator system, comprising: a structure having a plurality of landings, a plurality of elevator cars mounted for movement relative to said structure to serve the landings, each of said elevator cars including first control means disposed in the elevator car, and second control means disposed at a point remote from the elevator car, said first control means including means providing data for said second control means, and means time multiplexing said data to said second control means at a first predetermined rate, third control means for directing the movement of the plurality of elevator cars, said second control means including means time multiplexing the data received from the first control means to the third control means at a second predetermined rate which exceeds the first data rate.
15. The elevator system of claim 14 wherein the third control means includes means providing data, and means multiplexing this data to the second control means at the second predetermined rate.
16. The elevator system of claim 15 wherein the second control means includes means multiplexing the data received from the third control means to the first control means at the first predetermined rate.
17. An elevator system, comprising: a structure having a plurality of landings, at least one elevator car mounted for movement relative to said structure to serve the landings, said at least one elevator car including first control means disposed in the elevator car, second control means disposed at a point remote from the elevator car, and means interconnecting said first and second control means, said first control means including means providing data for said second control means, and means time multiplexing said data to said second control means, said data provided by the first control means being at a first predetermined voltage level, means increasing the voltage level of the data to a second voltage level prior to transmitting it to the second control means, and means in the second control means for reducing the voltage level.
18. The elevator system Of claim 17 wherein the second control means includes means providing data for the first control means, and means time multiplexing this data to the first control means, said data provided by the second control means being at a first predetermined voltage level, and including means in the second control means increasing the voltage level of the data to a second voltage level prior to transmitting it to the first control means, and means in the first control means for reducing the voltage level.
US00340614A 1973-03-12 1973-03-12 Elevator system Expired - Lifetime US3851735A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00340614A US3851735A (en) 1973-03-12 1973-03-12 Elevator system
US00340620A US3828892A (en) 1973-03-12 1973-03-12 Elevator system
CA193,092A CA995373A (en) 1973-03-12 1974-02-20 Elevator system
BR180274A BR7401802D0 (en) 1973-03-12 1974-03-11 LIFT PROCESSING
JP49027827A JPS49126053A (en) 1973-03-12 1974-03-12
FR7408297A FR2221379B1 (en) 1973-03-12 1974-03-12
BE141940A BE812216A (en) 1973-03-12 1974-03-12 ELEVATOR SYSTEM
FR7408298A FR2221380B1 (en) 1973-03-12 1974-03-12
FR7408299A FR2221381B1 (en) 1973-03-12 1974-03-12

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US00340620A US3828892A (en) 1973-03-12 1973-03-12 Elevator system

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973648A (en) * 1974-09-30 1976-08-10 Westinghouse Electric Corporation Monitoring system for elevator installation
US4042067A (en) * 1975-05-16 1977-08-16 Westinghouse Electric Corporation Elevator system
US4111284A (en) * 1974-09-04 1978-09-05 Westinghouse Electric Corp. Elevator system
US4114730A (en) * 1976-09-07 1978-09-19 Reliance Electric Company Transportation system with individual programmable vehicle processors
US4330838A (en) * 1978-07-07 1982-05-18 Hitachi, Ltd. Elevator test operation apparatus
FR2536056A1 (en) * 1982-11-17 1984-05-18 Otis Elevator Co ELEVATOR AND ITS CONTROL DEVICE
US4497391A (en) * 1983-10-27 1985-02-05 Otis Elevator Company Modular operational elevator control system
EP0148000A1 (en) * 1983-12-19 1985-07-10 Otis Elevator Company Remote monitoring system
US4683989A (en) * 1986-02-14 1987-08-04 Westinghouse Electric Corp. Elevator communication controller
US4709788A (en) * 1985-06-28 1987-12-01 Kabushiki Kaisha Toshiba Group control apparatus for elevators
GB2195791A (en) * 1986-09-30 1988-04-13 Toshiba Kk Information transmission for elevator control
US6665460B2 (en) * 2001-03-12 2003-12-16 Photonami Inc. Method and apparatus for selecting signal components from optical signals
US20040089503A1 (en) * 2002-11-13 2004-05-13 Brand Matthew E. Optimal parking of free cars in elevator group control
US20040144599A1 (en) * 2002-11-06 2004-07-29 Philipp Wyss Method of and device for controlling an elevator installation with zonal control
US8151943B2 (en) 2007-08-21 2012-04-10 De Groot Pieter J Method of controlling intelligent destination elevators with selected operation modes
US20130015021A1 (en) * 2010-04-07 2013-01-17 Kone Corporation Adjustment device and an electric device of an elevator

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US4587511A (en) * 1983-08-30 1986-05-06 Westinghouse Electric Corp. Elevator system with hall lamp status monitoring
EP1980520A1 (en) * 2007-04-10 2008-10-15 Inventio Ag Method for adjusting a number of operating units of a lift facility with a number of floors

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US3589473A (en) * 1968-12-17 1971-06-29 Westinghouse Electric Corp Pulse-supervised multivehicle transportation
US3739880A (en) * 1971-06-10 1973-06-19 Reliance Electric Co Elevator control for optimizing allotment of individual hall calls to individual cars

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US3589473A (en) * 1968-12-17 1971-06-29 Westinghouse Electric Corp Pulse-supervised multivehicle transportation
US3739880A (en) * 1971-06-10 1973-06-19 Reliance Electric Co Elevator control for optimizing allotment of individual hall calls to individual cars

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111284A (en) * 1974-09-04 1978-09-05 Westinghouse Electric Corp. Elevator system
US3973648A (en) * 1974-09-30 1976-08-10 Westinghouse Electric Corporation Monitoring system for elevator installation
US4042067A (en) * 1975-05-16 1977-08-16 Westinghouse Electric Corporation Elevator system
US4114730A (en) * 1976-09-07 1978-09-19 Reliance Electric Company Transportation system with individual programmable vehicle processors
US4330838A (en) * 1978-07-07 1982-05-18 Hitachi, Ltd. Elevator test operation apparatus
FR2536056A1 (en) * 1982-11-17 1984-05-18 Otis Elevator Co ELEVATOR AND ITS CONTROL DEVICE
US4497391A (en) * 1983-10-27 1985-02-05 Otis Elevator Company Modular operational elevator control system
FR2554099A1 (en) * 1983-10-27 1985-05-03 Otis Elevator Co MODULAR ELEVATOR OPERATION CONTROL SYSTEM, CONTROL METHOD AND ELEVATOR PROVIDED WITH SUCH A SYSTEM
EP0148000A1 (en) * 1983-12-19 1985-07-10 Otis Elevator Company Remote monitoring system
US4568909A (en) * 1983-12-19 1986-02-04 United Technologies Corporation Remote elevator monitoring system
US4709788A (en) * 1985-06-28 1987-12-01 Kabushiki Kaisha Toshiba Group control apparatus for elevators
US4683989A (en) * 1986-02-14 1987-08-04 Westinghouse Electric Corp. Elevator communication controller
GB2195791A (en) * 1986-09-30 1988-04-13 Toshiba Kk Information transmission for elevator control
US4860207A (en) * 1986-09-30 1989-08-22 Kabushiki Kaisha Toshiba Information transmission control apparatus for elevator system
GB2195791B (en) * 1986-09-30 1991-02-13 Toshiba Kk Information transmission control apparatus for elevator system
US6665460B2 (en) * 2001-03-12 2003-12-16 Photonami Inc. Method and apparatus for selecting signal components from optical signals
US20040144599A1 (en) * 2002-11-06 2004-07-29 Philipp Wyss Method of and device for controlling an elevator installation with zonal control
US7025180B2 (en) * 2002-11-06 2006-04-11 Inventio Ag Method of and device for controlling an elevator installation with zonal control
US20040089503A1 (en) * 2002-11-13 2004-05-13 Brand Matthew E. Optimal parking of free cars in elevator group control
US6808049B2 (en) * 2002-11-13 2004-10-26 Mitsubishi Electric Research Laboratories, Inc. Optimal parking of free cars in elevator group control
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