US3750850A

US3750850A - Floor selector for an elevator car

Info

Publication number: US3750850A
Application number: US00254007A
Authority: US
Inventors: C Winkler; A Wavre
Original assignee: Westinghouse Electric Corp
Current assignee: CBS Corp
Priority date: 1972-05-17
Filing date: 1972-05-17
Publication date: 1973-08-07
Anticipated expiration: 1990-08-07
Also published as: ES414803A1; CA985807A; FR2185002B1; IT987684B; JPS5625430B2; JPS4948042A; DE2325044A1; AU5536573A; FR2185002A1; GB1436743A; BR7303643D0; NL7306871A; BE799641A

Abstract

A floor selector adaptable for use in an elevator system which uses binary counters and comparators to provide a continuous, a discrete, and a serial advanced car position signal. The continuous and discrete advanced car position signals are used to generate an equality signal when the car must initiate deceleration in order to stop at a floor with a predetermined deceleration pattern, and the serial advanced car position signal is used to determine a coincidence of a call for service for that floor. A coincidence registered by the time the equality signal is generated initiates a request for deceleration.

Description

[ Aug. 7, 1973 FLOOR SELECTOR FOR AN ELEVATOR CAR [75] inventors: Charles L. Winkler, Pittsburgh, Pa.;

Andre Wavre, Bevaix, Switzerland [73] Assigneez' Westinghouse Electric Corporation,

Pittsburgh, Pa.

221 Filed: Mayl7, 1972 21 Appl. No.1 254,007

Primary Examiner-Bernard A. Gilheany Assistant Examiner-W. E. Duncanson, Jr.

Attorney-A. TL Strat t oHTDonaId i. Lackey et al.

[57] ABSTRACT A floor selector adaptable for use in an elevator system which uses binary counters and comparators to provide a continuous, a discrete, and a serial advanced car position signal. The continuous and discrete advanced car position signals are used to generate an equality signal if 3' when the car must initiate deceleration in order to stop d 187 29 at a floor with a predetermined deceleration pattern, le 0 care and the serial advanced car position signal is used to 56 R t C" d determine a coincidence of a call for service for that I 1 e e floor. A coincidence registered by the time the equality UNITED STATES PATENTS signal is generated initiates a request for deceleration. 3,570,630 3/1971 Voight et al. 187/29 3,589,474 6/1971 Wavre 187/29 16 Claims, 23 PS 8" DISCRETE I 72 ADVANCED CAR 82 1 POSITION 80 5353??? COMPARATOR TIMING SEEIAL ADVANCED I R POSITION INDEX 74 M M Y I SIGN/t1 E 0R EQIZNJ I 78 76 84' CALLS I 7 COMMANDS INDEXER COMPARATOR LOGIC A c L RATION &

IiCEL ATION REQLESTS CONTINUOUS LANTERN a CALL I gg RESET SIGNALS POSITION MI (7O 3 4 DISTANCE REVERSIBLE PULSES COUNTER VFLOOR SELECTOR PMENTEW 3.150.850

TIMWG 01 [1F 19 CORRIDOR CALL CONTROL 20 I ---{MOTOR|L- b FIG. I

TIMING h LANDING K UMIT CAR CALL CONTROL fi HATCHWAY 52 TIMING 34 36 To x 1 I A v 44 000R FLOOR HALL Y1" CAR*OPERATOR SELECTOR LANTERNs 5 DOOR 2nd LANDING OPERATOR 54 5e MOTOR SPEED 4o "GfiEEIE%R J DISTANCE 24 El-J -PuLsEs Is! LANDING I L S E AI Q 64 i9 28 V 1 PULSE DETECTOR DISCRETE I 72 ADVANCED CAR 2 k POSITION I {80 r SERIAL AOvANCEO .lNDEX MEMOR J74 CAR POSITION SIGIIA EQIz-L FIG. 2

78 4x ACAIELS I 76 E02 --cOMMANOs INDEXER COMPARATOR 7 LOGIC ,AccEL RATION a DECEL ATION RE uEsTs CONTINUOUS LANTERN & CALL ADVANCED RESET SIGNALS POSITION TIMTNG 34 AEEEE ggggi'gi FLOOR SELECTOR PATENTEDAuB 1 ma SHEET 0% 0F 19 3 mmox w Muddudq x4233 PATENTED sum 05 0F 19 ZQLOm v9 mOm m Om mwhznoo 20 mm mmm g i l mm kwmwm ZOFFOmROF PATENTEDAuc 7am 3750.850

SHEET 08 0F 19 00mm LU 8a vm 3 Y fi zwu w2z$5 5 mm 6%.3 2209 65 33 12 09:2 C w58:20:58 Tl $080259 n u n n u n u u n n u n n n n n $5 36 mo mmoo zzoo n E E n 1 SZ SmOQEOQQD C C C fiQm omS mozoumwji 095a @2253 u h n u n 20.555 oziz m 1 o i0;mNTNTNTNTNTNTNTi o- 2 m w; 32?. T; o ToToToToToToTg-oo oo n on zo .cwoa oz zz om m N T VAVAQMFNFA\.- wnom 2 597% 9?; o l i L i i L Li zoEmoQ mood PATENTEUMIE 1 ms 3,750,850

saw as [If 19 CAR LOGIC 96 364 368 BY PASSING m CORRIDOR CALLS 366 SUT BTTM

EOI

DOR

SBC

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Efimzsen DECS FIG. 9

PAIENTEUIIUI; 1 Ian 3. 750.850

SHEEI 10 0f I9 mmm (DNCDQO FLOOR CORRIDOR CALLS cAR CAN CONSIDER WHEN TRAVELLING IN A GIVEN DIRECTION FIG. II

PAIENIEU 7973 saw 11 or 19 FIG '2 SPEED PATTERN GENERATOR 4s SUMMING 54@ 99 Row A OGu sRAT w W AGPAG A UPTF? START) Ace sPsz 54 A I MXVM M TIME RAMP ANALOG Ace GENERATOR SWITCH (544 ACC 546 TRsw .pflgg REVERSIBLE DISTANCE OsAN ANALOG OLE cOuNTER B SLOWDOWN SWITCH u ANALOG 063w 556 SW'TCH J HTI R R rHTAN ANALOG SWITCH ANALOG 1 553 SWITCH j DOWN J 560 55s MINA\ TSAN TERMINAL ANALOG PLSDP SLOWDOWN SWITCH STAE 552 TSD 1T0 NLlG DRIVER SPSW PULSE |L. DETECTOR MOTOR TOVSP 0L2 DCL To TAGH BOTTOM v L O sTART(Acc O DG U DGD 575' E? Acc SPSI *OSPSZ PATENTEUAU; 7

ms sum

12 or 19 VQBSE Pmmzows H913 sum 13 or 19 m 0 TO 8 l I I I I I I I l I l I I I I I I I I l l II E 1 W m m w I am as DD m N M I l l l I I I l I l I l l l l l I I I l I I ll 9 WI I l l I I l I l I l I .ll 0 8 m 7 T 4 i n m I l l I I I I l I l I I I l I l I |-N llll ll 8 QVL 64 a 3 7 4 A I 7 3 R 7 E m RM 6 ME I 0 m a h n P 0 m m my U5 Q m P A C U C5 6 6 S 8 C S 5 A FIG. |5A

Fmumws mu VOLTAGE I+I INPUT TO FILTER AMPLIFIER OUT PUT VOLTAGE v OF FILTER AMPLIFIER (V55) Vl O VOLTAGE I+ INPUT TO FILTER AMPLIFIER VOLTAGE OUTPUT OF 2 FILTER VI AMPLIFIER FIG. 20A

TIME

SPSW

FIG. 20B

TOVSP

Claims

1. A floor selector adaptable for use in an elevator system including a structure having a plurality of floors, and a car mounted for movement relative to the structure to serve the floors, said floor selector comprising: first means providing a first advanced car position signal responsive to movement of the car which indicates where in the structure the car would stop if decelerated according to a predetermined deceleration schedule; second means responsive to said first means and the locations of the floors relative to the structure, said second means providing an equality signal for a floor ahead of the direction of car travel when the car reaches a point where deceleration must be initiated to stop at that floor, third means providing a second advanced car position signal which indicates the closest floor ahead of car direction travel at which the car may stop, fourth means continuously scanning and dividing successive predetermined time periods into a plurality of intervals, with at least certain of the intervals of each time period corresponding to floors of the structure, said fourth means providing a signal which identifies the position of each interval in the time period as each time period is scanned, fifth means responsive to said third and fourth means, providing a third advanced car position signal during the interval of each time period which represents the floor of the second advanced car position signal, sixth means responsive to The third advanced car position signal and to calls for service which the car is conditioned to serve, said sixth means providing a coincident signal when a call for service is registered for the floor of the third advanced car position signal, and seventh means responsive to said second and sixth means providing a deceleration request signal to stop the car at a specific floor when an equality signal for that floor is received following a coincident signal indicating a request for service at that floor.

2. The floor selector of claim 1 including eighth means providing an index signal for the third means, to change the second advanced car position signal to indicate the next floor at which the car may stop, in the absence of a request to stop the car when the equality signal is generated.

3. The floor selector of claim 1 wherein the second means includes memory means which contains the exact locations of the floors relative to the structure, said memory means being addressed by the second advanced car position signal to output the location of the floor identified by the second advanced car position signal.

4. The floor selector of claim 3 wherein the second advanced car position signal is a binary number containing the number of bits necessary to identify the total number of floors in the structure, and the output of the memory means in a binary number containing the number of bits necessary to locate each floor relative to the structure in terms of a standard increment of displacement from a predetermined location in the structure.

5. The floor selector of claim 1 wherein the first means includes a reversible binary counter adapted to receive and count pulses from pulse generating means which generates pulses for each standard increment of displacement of the car relative to the structure.

6. The floor selector of claim 5 wherein the second means includes memory means addressed by the second advanced car position signal which outputs the binary number corresponding to the location of the floor relative to the structure which is represented by the second advanced car position signal, said second means providing the equality signal when the binary output signals of the reversible binary counter and memory means are equal.

7. The floor selector of claim 1 wherein the third and fourth means are binary counters, and the fifth means is a bit-by-bit comparator, with the fifth means providing the third advanced car position signal when the bianry signals of the third and fourth means are equal.

8. The floor selector of claim 7 wherein the fourth means divides each time period into more intervals than floors in the structure, and including memory means responsive to said fourth means for outputting signals which identify the intervals which are not associated with floors.

9. The floor selector of claim 1 wherein the coincident signal provided by the sixth means is stored by the seventh means, and the equality signal provided by the second means initiates the deceleration request signal by the seventh means when a coincident signal is stored in the seventh means at the time the equality signal is provided.

10. A floor selector adaptable for use in an elevator system including a structure having a plurality of floors, and a car mounted for movement relative to the structure to serve the floors, said floor selector comprising: first counting means adapted to count pulses generated in response to standard increments of displacement of the car relative to the structure, said first counting means being operative to accumulate a count representing the continuous advanced car position, second counting means providing a count representing the discrete advanced car position, indicating the floor at which the car can stop according to a predetermined deceleration pattern, third counting means which scans and divides a predetermined time period into a plurality of intervals, with at least certain of the intervals representing the floors of the structure, first comparator means responsive to said second and third counting means, providing a serial advanced car position signal during the interval of each time period which represents the floor of the discrete advanced car position, call selecting means responsive to calls for service which the car is conditioned to serve and to the serial advanced car position, providing a coincident signal when the floor of the serial advanced car position and a call for service for that floor coincide, memory means addressed by said second counting means, said memory means providing a count which identifies the location of the floor, relative to the structure, represented by the discrete advanced car position signal, second comparator means responsive to said memory means and to said first counting means, said second comparator means providing an equality signal when the count of said first counting means and said memory means are equal, and synchronizer means responsive to said second comparator means and said call selecting means, storing a coincident signal provided by said call selecting means, and providing a deceleration request signal when a coincident signal has been stored at the time the equality signal is provided by said second comparator means.

11. The floor selector of claim 10 including indexing means which provides an indexing signal for the second counting means in response to the generation of an equality signal in the absence of a stored coincident signal in the synchronizer means, said indexing signal changing the discrete advanced car position signal to represent the next floor at which the car can stop.

12. The floor selector of claim 10 wherein the second comparison means provides an inferiority signal when the continuous advanced car position count is less than the count of the memory means, the equality signal when they are equal, and a superiority signal when the continuous advanced car position count is greater than the count of the memory means, and including indexing means for incrementing by one the floor represented by the discrete advanced car position when the superiority signal is generated in response to upward travel by the car, and for decrementing by one the floor represented by the discrete advanced car position when the inferiority signal is generated in response to downward travel of the car.

13. The floor selector of claim 10 including decoding means which provides a terminal slowdown signal when the continuous advanced car position count represents a terminal floor.

14. The floor selector of claim 10 including means for resetting the first and second counters when the car is at at least a certain one of the floors of the structure.

15. The floor selector of claim 10 wherein the third counting means divides each time period into more intervals than there are floors in the structure, and including second memory means which identifies the intervals of each scan which do not represent floors.

16. The floor selector of claim 10 including car call means and corridor call means, said car call means and corridor call means providing car calls and corridor calls in serial form for the call selecting means, synchronized with the third counting means to direct call information to the proper intervals of each time period.