US3837436A - Elevator control system - Google Patents
Elevator control system Download PDFInfo
- Publication number
- US3837436A US3837436A US00156866A US15686671A US3837436A US 3837436 A US3837436 A US 3837436A US 00156866 A US00156866 A US 00156866A US 15686671 A US15686671 A US 15686671A US 3837436 A US3837436 A US 3837436A
- Authority
- US
- United States
- Prior art keywords
- interval
- elevator car
- elevator
- car
- detecting
- 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
Links
- 230000001133 acceleration Effects 0.000 claims description 11
- 230000000063 preceeding effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
- B66B1/18—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. push-buttons, for indirect control of movements with means for storing pulses controlling the movements of several cars or cages
Definitions
- the system includes means for detecting the time interval or spatial interval between a preceding elevator car, an intermediate elevator car and a succeeding elevator car.
- the intermediate elevator car is accelerated, while when the former interval is less than the latter interval, the preseding or succeeding elevator car is accelerated for maintaining a reasonable interval between these elevator cars.
- This invention relates to an elevator control system and more particularly to improvements in an elevator control system for controlling the operation of a plurality of elevator cars servicing a plurality of service floor landings.
- the elevator cars In a building in which a plurality of elevator cars are in parallel operation for servicing a plurality of service floor landings, the elevator cars must be prevented from bunching, namely, servicing together without any interval therebetween. In other words, it is necessary to maintain a suitable interval between the elevator cars.
- the intervals between these elevator cars need not be equal to each other and are desirably such that the passengers in a plurality of elevator halls wait an equal period of time.
- Reasonable intervals between servicing elevator cars may be obtained byaccelerating at least one of the elevator cars on the basis of information including, the intervals between the elevator cars, the hall calls originating from the floors, etc.
- the acceleration of a specific elevator car may be attained by limiting its response to forward hall calls originating from the floors lying within a predetermined range, from the position of a specific elevator car indicated by a position signal (which will be described in detail later), thereby apparently advancing the position of the elevator car, or preventing the elevator car from responding to such forward hall calls until a predetermined condition is satisfied.
- the position signal above described may represent the floor number or space, but it is preferable for practical purposes that the position signal represents the floor number.
- the position signal indicates the floor number, it represents the actual position of the elevator car and is thus called a physical position signal.
- the position signal may represent the floor at which it is at rest. In this case, this floor coincides with the physical position of the elevator car.
- the position signal may represent a floor which is forward relative to the physical position of the elevator car.
- such a floor may be the fourth floor when the elevator car is moving past the third floor at a low speed, or the fifth floor when the elevator car. is moving past the third floor at a medium speed, or the sixth floor when the elevator car is moving past the third floor at a high speed.
- the position signal representing the space may be the fourth floor when the elevator car is moving past the third floor at a low speed, or the fifth floor when the elevator car. is moving past the third floor at a medium speed, or the sixth floor when the elevator car is moving past the third floor at a high speed.
- an elevator car responds to up hall calls from the upper floors when it is moving upward and responds to down hall calls from the lower floors when it is moving downward. Therefore, when the first floor is the dispatching floor (bottom terminal) for the elevator cars, each elevator car responds first to an up call from the bottom terminal and then responds successively to up calls from the upper floors, and after arriving at the top terminal floor, responds first to a call from the top terminal floor and then responds successively to down calls from the lower floors.
- the floors lying forward of the reference floor in the moving direction of the elevator car are called forward floors and the hall calls from such floors are called forward hall calls, while the floors lying behind the reference floor in the moving direction of the elevator car are called back floors and the hall calls from such floors are called back hall calls.
- the up call from the sixth floor is a forward hall call and the up call from the third floor is a back hall call.
- the down call from the sixth floor is a back hall call and the down call from the third floor is a forward hall call.
- the elevator car responds commonly to forward hall calls from the floors lying forward of the position represented by the position signal, but when the elevator car is arranged so as not to respond to forward hall calls from the floors lying within a specific range, this elevator car is apparently advanced in its position and its movement is accelerated.
- the nearest floor to which the elevator car can actually respond is called a provisional position.
- the provisional position coincides with the physical position representeby the position signal when no limitation is applied to the forward hall calls, while the provisional position is ahead of the physical position when the elevator car is apparently advanced in its position.
- the provisional position is not definitely determined when the elevator car is arranged so as not to respond to all the hall calls including those from the floors lying within the specific range until a predetermined condition is eliminated.
- the service zone to which each individual elevator car should respond can be definitely determined.
- the service zone to be served by each individual elevator car is indistinct when arrangement is made so that at least one suitable elevator car is prevented from responding to all the hall calls until disorderly movement of the elevator cars is eliminated.
- the former arrangement requires means for determining whether or not each individual elevator car should respond to the hall calls from the floor.
- control means for controlling the elevator cars as to whether or not each individual elevator car should respond to all the hall calls can be simplified in structure, but it is necessary to determine the elevator car which should respond to a hall call originating from a specific floor.
- Another object of the present invention is to provide an elevator control system which eliminates undesirable bunching of continuously moving elevator cars so as to improve the operating efficiency.
- a further object of the present invention is to provide an elevator control system having means for detecting the disorderly movement of elevator cars so as to prevent at least one of the elevator cars from responding to all the hall calls in the event of occurrence of such disorderly movement, means are provided for immediately selecting one of the elevator cars which can respond to a hall call in response to the registration of such a hall call.
- One feature of the present invention resides in the fact that, when the interval between a preceding elevator car and a succeeding elevator car exceeds a predetermined limit, the succeeding elevator car is accelerated to maintain a reasonable interval therebetween.
- Another feature of the present invention resides in the fact that, when the interval between a preceding elevator car and an intermediate elevator car among three elevator cars exceeds the interval between a succeeding elevator car and the intermediate elevator car by more than a predetermined limit, the intermediate elevator car is accelerated to maintain a reasonable interval between it and the preceding elevator car, while when the interval between the succeeding elevator car and the intermediate elevator car exceeds the interval between the preceding elevator car and the intermediate elevator car by more than the predetermined limit, the preceding elevator car or succeeding elevator car is accelerated to maintain a reasonable interval between it and the intermediate elevator car.
- a further feature of the present invention resides in the fact that an elevator car applied with an acceleration command signal does not respond to any forward or back hall calls during the period of time in which the acceleration command signal is continuously applied.
- FIGS. la and 1b are schematic diagrams showing the running state of a plurality of elevator cars
- FIG. 2 is a block diagram showing the structure of an elevator control system embodying the present inventron
- FIG. 3a is a block diagram showing the structure of one form of an acceleration signal generator
- FIGS. 3b, 3c and 3d are diagrammatic views showing varrious running states of the elevator cars
- FIG. 4 is a circuit diagram showing the structure of one form of a position detector
- FIG. 5 is a chart illustrating the operation of the position detector shown in FIG. 4;
- FIG. 6 is a circuit diagram showing the structure of one form of a spatial distance calculator
- FIGS. 7a, 7b and 7c are diagrammatic views illustrating the operation of the spatial distance calculator shown in FIG. 6;
- FIG. 8 is a circuit diagram showing the structure of one form of a time distance calculator
- FIG. 9 is a block diagram showing the structure of one form of control means used in the acceleration signal generator for controlling the operation of the elevator cars by the acceleration signal;
- FIG. 10 is a circuit diagram showing in detail in the structure of one form of an interval calculating, order, selector
- FIG. 11 is a circuit diagram showing in detail the structure of one form of an interval calculating commander
- FIG. 12 is a circuit diagram showing in detail the structure of one form of means for detecting a hall call and the interval between the elevator cars;
- FIG. 13 is a circuit diagram showing the structure of one form of means for generating a voltage in response to a specific hall call
- FIG. 14 is a circuit diagram showing the structure of one form of means for calculating the distance between the elevator cars and a specific floor;
- FIG. 15 is a circuit diagram showing in detail the structure of one form of a-minimum selector.
- FIGS. 16 and 17 are block diagrams showing partial modifications of the system according to the present invention.
- FIGS. la and 1b the present invention will be described with reference to an elevator system in which three elevator cars A, B and C are provided in a building having 10 floors designated by F l to F10.
- the physical positions of the elevator cars A, B and C are designated by 1U to 9U when they move upward and by 10D to 2D when they move downward.
- the intermediate elevator car is accelerated when the interval between the preceding and intermediate elevator cars exceeds the interval between the intermediate and succeeding elevator cars.
- the succeeding or preceding elevator car is accelerated when the interval between the succeeding and intermediate elevator cars exceeds the interval between the intermediate and preceding elevator cars.
- each individual elevator car is accelerated when it is delayed by a predetermined time from a predetermined running schedule.v Each individual elevator car is accelerated when disorder occurs in the arrival of the elevator cars at different floors.
- the concept of the time distance taking into consideration the function of time associated with the number of stoppages of the elevator cars may be introduced for effectively controlling the operation of the elevator cars.
- FIG. 2 is a block diagram showing the structure of an embodiment of the present invention in which the three elevators cars servicing the building having 10 floors are adapted to be controlled by the second method above described.
- Position detectors DA, DB and DC for the respective elevator cars A, B and C generate position signals FA, FE and FC representing the physical positions of the respective elevator cars A, B and C.
- a hall call register I-ICR stores hall calls l-IClU (up hall call from the first floor) to I-IC9U and I-IC10D (down hall call from the tenth floor) to HC2D.
- the hall call register l-ICR is reset by a reset signal REl upon arrival of the elevator
Abstract
An improved elevator control system for maintaining a properly controlled interval between a plurality of elevator cars. The system includes means for detecting the time interval or spatial interval between a preceding elevator car, an intermediate elevator car and a succeeding elevator car. When the interval between the preceding and intermediate elevator cars is more than the interval between the intermediate and succeeding elevator cars, the intermediate elevator car is accelerated, while when the former interval is less than the latter interval, the preseding or succeeding elevator car is accelerated for maintaining a reasonable interval between these elevator cars.
Description
Hirasawa et a1.
[ ELEVATOR CONTROL SYSTEM [75] Inventors: Kotaro Hirasawa; Koichi Kawatake,
both of Hitachi; Tatsuo lwasaka, Katsuta, all of Japan [73] Assignee: Hitachi, Ltd., Tokyo, Japan [22] Filed: June 25, 1971 [21] Appl. No.: 156,866
[30] Foreign Application Priority Data July 1, 1970 Japan 45-56938 July 1, 1970 Japan 45-56939 July 10, 1970 Japan .J; 45-59918 July 20, 1970 Japan 45-62847 [52] US. Cl 187/29 R [51] Int. Cl B66b 1/18 [58] Field of Search 187/29 [56] References Cited I UNITED STATES PATENTS 3,443,668 5/1969 Hall et a1. 187/29 MIN/MUM SELECTOR Lusti 187/29 Primary Examiner-Robert K. Schaefer Assistant ExaminerW. E. Duncanson, Jr. Attorney, Agent, or FirmCraig & Antonelli [5 7 ABSTRACT An improved elevator control system for maintaining a properly controlled interval between a plurality of elevator cars. The system includes means for detecting the time interval or spatial interval between a preceding elevator car, an intermediate elevator car and a succeeding elevator car. When the interval between the preceding and intermediate elevator cars is more than the interval between the'intermediate and succeeding elevator cars, the intermediate elevator car is accelerated, while when the former interval is less than the latter interval, the preseding or succeeding elevator car is accelerated for maintaining a reasonable interval between these elevator cars.
15 Claims, 23 Drawing Figures mw/m CALL REG/57E}? CCA PAIEmmserzamu P0577 ION SIGNAL INVENTORS Tab ATTORNEYS PAIENIEDstrzmu sum 07 or 17 wmu INVENTORS ARO HIRASAWA.
ATTORNEYS m nim ssrzmn sum #10 or 17 FIG. 9
SHA
INVENTOR'S KOTARO HIRASAWAI Kmcm KAWATAKEQKATATSUO IWA$AKA QQL 'OMQMQU S. HLQQ ATTORNEYS PAlfimiustrzmm g bmkkw 7 MRS swim bmhtw NEW INVENTORS ATTORNEYS mmmsir'zmn 7, 35
SHEET 213 DF 17,
w m u as gfi 4? gg S aw m M; M;
Q, Q; i
INVENTORS KOTARO HlRASAwA,
KOlG-H KAWATAKEaud TATSUO IWASAKA BY @44 QMtouzQQ *9 Ham v ATTORNEY5 PMENIEU 2 sum '15 N17 ,QQG ma mmmu Ro wmns.
INVENTORS KOTARO IWASAKAI K Id-H KAwATAKEmd TATSUO IWASAKA BY aaiswaww Hum ATTORNEYS This invention relates to an elevator control system and more particularly to improvements in an elevator control system for controlling the operation of a plurality of elevator cars servicing a plurality of service floor landings.
In a building in which a plurality of elevator cars are in parallel operation for servicing a plurality of service floor landings, the elevator cars must be prevented from bunching, namely, servicing together without any interval therebetween. In other words, it is necessary to maintain a suitable interval between the elevator cars. The intervals between these elevator cars need not be equal to each other and are desirably such that the passengers in a plurality of elevator halls wait an equal period of time. I
Reasonable intervals between servicing elevator cars may be obtained byaccelerating at least one of the elevator cars on the basis of information including, the intervals between the elevator cars, the hall calls originating from the floors, etc. The acceleration of a specific elevator car may be attained by limiting its response to forward hall calls originating from the floors lying within a predetermined range, from the position of a specific elevator car indicated by a position signal (which will be described in detail later), thereby apparently advancing the position of the elevator car, or preventing the elevator car from responding to such forward hall calls until a predetermined condition is satisfied.
The position signal above described may represent the floor number or space, but it is preferable for practical purposes that the position signal represents the floor number. When theposition signal indicates the floor number, it represents the actual position of the elevator car and is thus called a physical position signal. When one of the elevator cars is at rest at a floor, the position signal may represent the floor at which it is at rest. In this case, this floor coincides with the physical position of the elevator car. When the elevator car is moving, the position signal may represent a floor which is forward relative to the physical position of the elevator car. For example, such a floor may be the fourth floor when the elevator car is moving past the third floor at a low speed, or the fifth floor when the elevator car. is moving past the third floor at a medium speed, or the sixth floor when the elevator car is moving past the third floor at a high speed. The same applies to the position signal representing the space.
In a typical elevator control, an elevator car responds to up hall calls from the upper floors when it is moving upward and responds to down hall calls from the lower floors when it is moving downward. Therefore, when the first floor is the dispatching floor (bottom terminal) for the elevator cars, each elevator car responds first to an up call from the bottom terminal and then responds successively to up calls from the upper floors, and after arriving at the top terminal floor, responds first to a call from the top terminal floor and then responds successively to down calls from the lower floors. Thus, when a certain floor is taken as a reference floor, the floors lying forward of the reference floor in the moving direction of the elevator car are called forward floors and the hall calls from such floors are called forward hall calls, while the floors lying behind the reference floor in the moving direction of the elevator car are called back floors and the hall calls from such floors are called back hall calls. For example, when the fifth floor is taken as a reference floor and the elevator car is moving upward, the up call from the sixth floor is a forward hall call and the up call from the third floor is a back hall call. When the elevator car is moving downward,
the down call from the sixth floor is a back hall call and the down call from the third floor is a forward hall call.
The elevator car responds commonly to forward hall calls from the floors lying forward of the position represented by the position signal, but when the elevator car is arranged so as not to respond to forward hall calls from the floors lying within a specific range, this elevator car is apparently advanced in its position and its movement is accelerated. In this description, the nearest floor to which the elevator car can actually respond is called a provisional position. Thus,'the provisional position coincides with the physical position representeby the position signal when no limitation is applied to the forward hall calls, while the provisional position is ahead of the physical position when the elevator car is apparently advanced in its position. On the other hand, the provisional position is not definitely determined when the elevator car is arranged so as not to respond to all the hall calls including those from the floors lying within the specific range until a predetermined condition is eliminated.
In the arrangement in which means for accelerating the elevator cars are provided for apparently advancing the position of the elevator cars over a predetermined range, the service zone to which each individual elevator car should respond can be definitely determined. However, the service zone to be served by each individual elevator car is indistinct when arrangement is made so that at least one suitable elevator car is prevented from responding to all the hall calls until disorderly movement of the elevator cars is eliminated. The former arrangement requires means for determining whether or not each individual elevator car should respond to the hall calls from the floor. In the latter arrangement, control means for controlling the elevator cars as to whether or not each individual elevator car should respond to all the hall calls can be simplified in structure, but it is necessary to determine the elevator car which should respond to a hall call originating from a specific floor.
It is therefore an object of the present invention to provide an elevator control system for controlling the operating condition of elevator cars depending on the traffic so as to operate the elevator cars in suitably spaced relation from each other thereby to substantially equalize the waiting time for the passengers waiting in the elevator halls.
Another object of the present invention is to provide an elevator control system which eliminates undesirable bunching of continuously moving elevator cars so as to improve the operating efficiency.
A further object of the present invention is to provide an elevator control system having means for detecting the disorderly movement of elevator cars so as to prevent at least one of the elevator cars from responding to all the hall calls in the event of occurrence of such disorderly movement, means are provided for immediately selecting one of the elevator cars which can respond to a hall call in response to the registration of such a hall call.
One feature of the present invention resides in the fact that, when the interval between a preceding elevator car and a succeeding elevator car exceeds a predetermined limit, the succeeding elevator car is accelerated to maintain a reasonable interval therebetween.
Another feature of the present invention resides in the fact that, when the interval between a preceding elevator car and an intermediate elevator car among three elevator cars exceeds the interval between a succeeding elevator car and the intermediate elevator car by more than a predetermined limit, the intermediate elevator car is accelerated to maintain a reasonable interval between it and the preceding elevator car, while when the interval between the succeeding elevator car and the intermediate elevator car exceeds the interval between the preceding elevator car and the intermediate elevator car by more than the predetermined limit, the preceding elevator car or succeeding elevator car is accelerated to maintain a reasonable interval between it and the intermediate elevator car.
A further feature of the present invention resides in the fact that an elevator car applied with an acceleration command signal does not respond to any forward or back hall calls during the period of time in which the acceleration command signal is continuously applied.
For a full understanding of the nature and objects of the present invention, reference should be had to the following detailed description taken in conjunction with the accompanying drawings, in which:
FIGS. la and 1b are schematic diagrams showing the running state of a plurality of elevator cars;
FIG. 2 is a block diagram showing the structure of an elevator control system embodying the present inventron;
FIG. 3a is a block diagram showing the structure of one form of an acceleration signal generator;
FIGS. 3b, 3c and 3d are diagrammatic views showing varrious running states of the elevator cars;
FIG. 4 is a circuit diagram showing the structure of one form of a position detector;
FIG. 5 is a chart illustrating the operation of the position detector shown in FIG. 4;
FIG. 6 is a circuit diagram showing the structure of one form of a spatial distance calculator;
FIGS. 7a, 7b and 7c are diagrammatic views illustrating the operation of the spatial distance calculator shown in FIG. 6;
FIG. 8 is a circuit diagram showing the structure of one form of a time distance calculator;
' FIG. 9 is a block diagram showing the structure of one form of control means used in the acceleration signal generator for controlling the operation of the elevator cars by the acceleration signal;
FIG. 10 is a circuit diagram showing in detail in the structure of one form of an interval calculating, order, selector;
FIG. 11 is a circuit diagram showing in detail the structure of one form of an interval calculating commander;
FIG. 12 is a circuit diagram showing in detail the structure of one form of means for detecting a hall call and the interval between the elevator cars;
FIG. 13 is a circuit diagram showing the structure of one form of means for generating a voltage in response to a specific hall call;
FIG. 14 is a circuit diagram showing the structure of one form of means for calculating the distance between the elevator cars and a specific floor;
FIG. 15 is a circuit diagram showing in detail the structure of one form of a-minimum selector; and
FIGS. 16 and 17 are block diagrams showing partial modifications of the system according to the present invention.
Referring to FIGS. la and 1b, the present invention will be described with reference to an elevator system in which three elevator cars A, B and C are provided in a building having 10 floors designated by F l to F10. The physical positions of the elevator cars A, B and C are designated by 1U to 9U when they move upward and by 10D to 2D when they move downward.
There are various methods for detecting the disorderly movement of these elevator cars and correcting the disorder to obtain a reasonable interval therebetween. According to one method in which two out of the three elevator cars are considered, the position signals representing the physical positions of the two elevator cars are generated and the preceding elevator car is accelerated when the difference between the position signal representing the position of the preceding elevator car and the position signal representing the position of the succeeding elevator car becomes smaller than a predetermined limit. On the other hand, the succeeding elevator car is accelerated when the difference between theposition signals exceeds the predetermined limit.
According to another method in which all of the three elevator cars are considered, the intermediate elevator car is accelerated when the interval between the preceding and intermediate elevator cars exceeds the interval between the intermediate and succeeding elevator cars. On the other hand, the succeeding or preceding elevator car is accelerated when the interval between the succeeding and intermediate elevator cars exceeds the interval between the intermediate and preceding elevator cars.
According to a further method in which each individual elevator car is considered, each individual elevator car is accelerated when it is delayed by a predetermined time from a predetermined running schedule.v Each individual elevator car is accelerated when disorder occurs in the arrival of the elevator cars at different floors.
Further, in addition to the spatial distance between the elevator cars as described above, the concept of the time distance taking into consideration the function of time associated with the number of stoppages of the elevator cars may be introduced for effectively controlling the operation of the elevator cars.
FIG. 2 is a block diagram showing the structure of an embodiment of the present invention in which the three elevators cars servicing the building having 10 floors are adapted to be controlled by the second method above described.
Position detectors DA, DB and DC for the respective elevator cars A, B and C generate position signals FA, FE and FC representing the physical positions of the respective elevator cars A, B and C. A hall call register I-ICR stores hall calls l-IClU (up hall call from the first floor) to I-IC9U and I-IC10D (down hall call from the tenth floor) to HC2D. The hall call register l-ICR is reset by a reset signal REl upon arrival of the elevator
Claims (15)
1. An elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings comprising: interval detecting means provided for each elevator car for detecting the interval between each elevator car and a preceding elevator car which is positioned ahead of said elevator car and for generating a corresponding interval signal representing said interval, means for providing a signal representing a desirable interval between any adjacent two of said elevator cars, comparator means provided for each elevator car for comparing the interval signal generated by the corresponding interval detecting means with said signal representing said desirable interval and to produce an output signal when said interval exceeds a predetermined value over said desirable interval, accelerating means provided for each car and responsive to the output signal produced by said comparator means for accelerating the elevator car associated with said comparator means, and said interval detecting means comprising means for detecting the spatial distance between each elevator car and the preceding elevator car, means for detecting the time distance related to the number of stoppages expected for each elevator car, and means for generating a time interval signal which is proportional to the sum of said spatial distance and said time distance.
2. An elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings comprising: interval detecting means provided for each elevator car for detecting the interval between each elevator car and a preceding elevator car which is positioned head of said elevator car and for generating a corresponding interval signal representing said interval, means for providing a signal representing a desirable interval between any adjacent two of said elevator cars, comparator means provided for each elevator car for comparing the interval signal generated by the corresponding interval detecting means with said signal representing said desirable interval and to produce an output siGnal when said interval exceeds a predetermined value over said desirable interval, accelerating means provided for each car and responsive to the output signal produced by said comparator means for accelerating the elevator car associated with said comparator means, and said interval detecting means comprising means for detecting the spatial distance between each elevator car and the preceding elevator car, means for detecting the time distance related to the number of stoppages expected for each elevator car while it moves through said spatial distance, and means for detecting the time interval which is the sum of said spatial distance and said time distance.
3. An elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings comprising: interval detecting means provided for each elevator car for detecting the interval between each elevator car and a preceding elevator car which is positioned ahead of said elevator car and for generating a corresponding interval signal representing said interval, means for providing a signal representing a desirable interval between any adjacent two of said elevator cars, comparator means provided for each elevator car for comparing the interval signal generated by the corresponding interval detecting means with said signal representing said desirable interval and to produce an output signal when said interval exceeds a predetermined value over said desirable interval, accelerating means provided for each car and responsive to the output signal produced by said comparator means for accelerating the elevator car associated with said comparator means, and means for selecting, among the elevator cars that can respond to a hall call, the one nearest to the floor from which the hall call is originated and registered and for causing the selected car to respond to said hall call, and additional means responsive to the output from said interval detecting means for preventing each elevator car from responding to all of the hall calls.
4. An elevator control system as claimed in claim 3, including means for displaying at a floor from which a hall call originates the indication of the selected elevator car responding to the hall call.
5. An elevator control system for controlling a plurality of elevator cars servicing a plurality of service floor landings comprising position detecting means for detecting the positions of the respective cars, hall call selecting means for selecting hall calls for service one at a time in the order received, interval detecting means responsive to said position detecting means and said hall call selecting means for detecting the backward interval between a specific floor providing a selected hall call and each of the elevator cars, minimum interval selector means for selecting the minimum of a plurality of backward intervals, gating means for selectively connecting said interval detecting means to said minimum interval selector means, acceleration signal generator means for generating respective acceleration signals to control movement of said elevator cars, said acceleration signals being applied to said gating means when generated to inhibit application of the backward interval associated with a particular elevator car to said minimum interval selector means, and elevator car control means for actuating that elevator car designated by the output of said minimum interval selector means to respond to said selected hall call.
6. An elevator control system as defined in claim 5 wherein said hall call selecting means includes a hall call register for storing received hall calls and an interval calculating order selector for selecting hall calls from said hall call register one at a time in the order received.
7. An elevator control system as defined in claim 6 wherein said interval detecting means includes an individual interval detector for each elevator car connected to receive the output of said interval calculating Order selector and said position detecting means includes a position detector for each elevator car having its output connected to an associated interval detector.
8. An elevator control system as defined in claim 7 wherein said gating means includes a first set of gates each connected to one of said interval detectors and a second set of gates connected to said first set of gates and said minimum selector means, said acceleration signals being applied to said second set of gates, and further including interval calculating commander means responsive to said interval calculating order selector for actuating said first and second sets of gates in timed sequence.
9. An elevator control system as defined in claim 8 wherein said acceleration signal generator means includes further interval detecting means responsive to said position detecting means for detecting the interval between a preceding elevator car and a succeeding elevator car, and accelerating means responsive to the output from said further interval detecting means for accelerating the succeeding elevator car when the interval between the elevator cars exceeds a predetermined value.
10. An elevator control system as defined in claim 9 wherein said further interval detecting means includes means for detecting the spatial distance between the preceding elevator car and the succeeding elevator car, means for detecting the time distance related to the number of internally initiated stoppages expected for the succeeding elevator car and means for generating a time interval signal which is proportional to the sum of said spatial distance and said time distance.
11. An elevator control system for controlling at least three elevator cars servicing a plurality of service floor landings comprising: first interval detecting means for detecting a first interval between each elevator car and preceding elevator car which is positioned ahead of said each elevator car and for generating a first interval signal representing said first interval, second interval detecting means for detecting a second interval between each elevator car and the elevator car which is succeeding said elevator car and for generating a second interval signal representing said second interval, comparator means provided for each elevator car to compare the first interval signal with the second interval signal with respect to each elevator car and to produce an output signal when said first interval signal exceeds by a predetermined value said second interval signal, and means responsive to said output signal produced by said comparator means for preventing the elevator car corresponding to said comparator means from responding hall calls.
12. An elevator control system as claimed in claim 11, in which said first interval detecting means detects the spatial distance between each elevator car and the preceding elevator car, and said second interval detecting means detects the spatial distance between each elevator car and the succeeding elevator car.
13. An elevator control system as claimed in claim 11, in which said first interval detecting means detects the time interval which is the sum of the spatial distance between each elevator car and the preceeding elevator car and the time distance related to the number of stoppages expected for each elevator car, and said second interval detecting means detects the time interval which is the sum of the spatial distance between each elevator car and the succeeding elevator car and the time distance related to the number of stoppages expected for the succeeding elevator car.
14. An elevator control system for controlling at least three elevator cars servicing a plurality of service floor landings comprising: car detecting means provided for each elevator car to detect the nearest car to each elevator car among the elevator cars which follow each elevator car, interval detecting means provided for each elevator car to detect the interval between each elevator car and the nearest one to said each elevator car, comparator means provided for each car to compare the interval detected by the interval detecting means provided for each elevator car with the interval detected by the different interval detecting means provided for a different elevator car and to produce an output signal when said last-mentioned interval exceeds by a predetermined value said first-mentioned interval, and means responsive to the output signal of said comparator means for preventing the elevator car associated with said comparator means from responding to hall calls.
15. An elevator control system for controlling at least three elevator cars servicing a plurality of floor landings comprising: car detecting means provided for each elevator car to detect the nearest car to each elevator car among the elevator cars which are in advance of said elevator car, interval detecting means provided for each elevator car to detect the interval between said each elevator car and the nearest car to each elevator car, comparator means provided for each car to compare the interval detected by the interval detecting means provided for each elevator car with the interval detected by the different interval detecting means provided for a different elevator car and to produce an output signal when said first-mentioned interval exceeds by a predetermined value said last-mentioned interval, and means responsive to the output signal of said comparator means for preventing the elevator car associated with said comparator means from responding to hall calls.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP45056938A JPS5115297B1 (en) | 1970-07-01 | 1970-07-01 | |
| JP45056939A JPS5115298B1 (en) | 1970-07-01 | 1970-07-01 | |
| JP45059918A JPS5115299B1 (en) | 1970-07-10 | 1970-07-10 | |
| JP45062847A JPS5115300B1 (en) | 1970-07-20 | 1970-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3837436A true US3837436A (en) | 1974-09-24 |
Family
ID=27463426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00156866A Expired - Lifetime US3837436A (en) | 1970-07-01 | 1971-06-25 | Elevator control system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3837436A (en) |
| CA (1) | CA935580A (en) |
| GB (1) | GB1356856A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447212A (en) * | 1993-05-05 | 1995-09-05 | Otis Elevator Company | Measurement and reduction of bunching in elevator dispatching with multiple term objection function |
| US5482143A (en) * | 1991-04-12 | 1996-01-09 | Mitsubishi Denki Kabushiki Kaisha | Method of controlling a plurality of elevators moving in a common hoistway |
| US20160376122A1 (en) * | 2014-04-28 | 2016-12-29 | Kone Corporation | Destination call control for different traffic types |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114890257A (en) * | 2022-03-31 | 2022-08-12 | 厦门立林科技有限公司 | Multi-terminal linkage elevator control method, system, device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3443668A (en) * | 1965-10-08 | 1969-05-13 | Reliance Electric & Eng Co | Plural car elevator system for developing hall call assignments between individual cars and registered hall calls |
| US3519106A (en) * | 1966-12-30 | 1970-07-07 | Westinghouse Electric Corp | Pulse-supervised transportation systems |
| US3614997A (en) * | 1969-12-16 | 1971-10-26 | Otis Elevator Co | Plural car conveyor system controlled by performance times between cars |
-
1971
- 1971-06-25 US US00156866A patent/US3837436A/en not_active Expired - Lifetime
- 1971-06-29 GB GB3045571A patent/GB1356856A/en not_active Expired
- 1971-06-30 CA CA117093A patent/CA935580A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3443668A (en) * | 1965-10-08 | 1969-05-13 | Reliance Electric & Eng Co | Plural car elevator system for developing hall call assignments between individual cars and registered hall calls |
| US3519106A (en) * | 1966-12-30 | 1970-07-07 | Westinghouse Electric Corp | Pulse-supervised transportation systems |
| US3614997A (en) * | 1969-12-16 | 1971-10-26 | Otis Elevator Co | Plural car conveyor system controlled by performance times between cars |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5482143A (en) * | 1991-04-12 | 1996-01-09 | Mitsubishi Denki Kabushiki Kaisha | Method of controlling a plurality of elevators moving in a common hoistway |
| US5447212A (en) * | 1993-05-05 | 1995-09-05 | Otis Elevator Company | Measurement and reduction of bunching in elevator dispatching with multiple term objection function |
| US20160376122A1 (en) * | 2014-04-28 | 2016-12-29 | Kone Corporation | Destination call control for different traffic types |
| US10676314B2 (en) * | 2014-04-28 | 2020-06-09 | Kone Corporation | Destination call control for different traffic types |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1356856A (en) | 1974-06-19 |
| CA935580A (en) | 1973-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3750850A (en) | Floor selector for an elevator car | |
| US4411337A (en) | Group control for elevators | |
| GB1172521A (en) | Method and means for Controlling Elevator Cars | |
| JP6516886B2 (en) | Method of operating a lift system and lift system | |
| GB1484499A (en) | Control apparatus for elevators | |
| US3837436A (en) | Elevator control system | |
| US3746131A (en) | System for controlling a plurality of elevator cars | |
| US4166518A (en) | Elevator control system | |
| US3857465A (en) | Elevator control device | |
| US4147235A (en) | Elevator control system | |
| US3831715A (en) | Elevator control process and system | |
| US3841443A (en) | Elevator system | |
| US3614997A (en) | Plural car conveyor system controlled by performance times between cars | |
| US3814215A (en) | Elevator control apparatus | |
| US3722628A (en) | Elevator control system | |
| US3844383A (en) | Elevator signaling system | |
| US3685618A (en) | A floor selector for an elevator car | |
| US3741347A (en) | Static elevator supervisory system | |
| US3902571A (en) | Elevator control system | |
| US3815712A (en) | Elevator controls for systems having widely spaced landings | |
| US2795295A (en) | Elevator systems | |
| US2075102A (en) | Electric elevator system | |
| US3730299A (en) | Elevator control system | |
| US3376953A (en) | Elevator plural car system including means to select one group of cars as the active group | |
| GB1496349A (en) | Elevator car call selection apparatus |