JPH0241505B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides two
A duplex car consisting of two cars, a car call memory and a load measuring device attached to the car, a landing call memory, and a floor selector attached to each elevator in the elevator group and indicating a possible stop floor. The present invention relates to an elevator group control device having a scanning position for scanning each floor according to the operating direction, and in this control device, a plurality of compound cars of the elevator group are assigned to a plurality of hall calls.

An elevator such as the one described above can carry twice as many passengers per trip as an elevator with a single car. Since fewer stops are required, the same number of landing calls can be answered in a shorter time, resulting in a significant improvement in transportation efficiency.

From Swiss Patent No. 529054, the control of an elevator group with multiple cars is known,
In this case, the dual car is configured to respond to two adjacent floors simultaneously. The purpose of this patent is to transport people from the first floor to the destination floor as quickly as possible by arranging multiple cars almost evenly. This is accomplished by passengers boarding the upper car and going to an odd floor boarding the lower car, with each car call button being disabled for floors not associated with the car. When the car is stopped by a hall call, the above-mentioned prohibition of operation is canceled and the passenger can reach any floor. The control of the elevator group works according to a system of zoning the hoistway, the cars and zones corresponding to each other and the cars being distributed over the entire hoistway according to the position of the zones. In such control, the assignment of landing calls to cars is dependent only on the location and orientation of the calls, and other factors, such as car load, are virtually ignored in the assignment process. Therefore, it is not possible during normal operation of elevator equipment to allow passengers to board the individual cars of a multi-car system evenly, and as a result it is not possible to ensure that passengers are evenly loaded into the individual cars of a multi-car system, and as a result, it is not possible to ensure that passengers are evenly loaded into the individual cars of a multi-car system. results cannot be achieved.

European Patent No. 0032213 (corresponding U.S. Patent No.
In the group control of elevators with single cars, known from US Pat. No. 4,355,705, elevators are allocated optimally in time to hall calls.
That is, during the scanning period in which the first scanner examines whether a landing call is present at each floor, a computing device in the form of a microprocessor determines the relationship between that floor and the car position indicated by the floor selector. A sum proportional to the predicted waiting time of passengers waiting to board and the predicted boarding time of passengers in the car is calculated from the distance between the cars, the predicted number of intermediate stop floors within this distance, and the load inside the car at this time. . The in-car load used for calculation at this time is corrected in consideration of the expected number of passengers at the subsequent intermediate stop, which is predicted from the number of passengers up to that point. The above-mentioned sum of the predicted waiting time and the predicted riding time, also referred to as the evaluation value, is stored in the evaluation value memory. During the evaluation value comparison cycle of the second scanner, the evaluation values of all elevators are compared with each other by means of a comparison device, and an allocation command is stored in the allocation memory of the elevator with the smallest evaluation value in each case, which command: Indicates the floor to which the car is most preferably allocated in terms of time.

The present invention is a group control device for elevators equipped with multiple cars by improving the group control device described at the beginning. It is an object of the present invention to provide a group control device that allows a group to be assigned to a group. To achieve this objective, the present invention, according to the features recited in the claims, calculates evaluation values for each of the multiple cars and compares them with each other by means of a comparison circuit, The smaller evaluation value is then stored in the evaluation value memory of the elevator in question, and if there is an assignment command for landing calls in the same direction of two adjacent floors and/or if the car call and the scanning position are In case of a match, the evaluation value to be stored is reduced.

The advantages obtained by the present invention are, in particular, the following points. That is, more stops will be made on adjacent floors with landing calls in the same direction and/or stops on floors with both a car call and a landing call, thereby reducing the number of stops and reducing waiting time. This will shorten the time and improve transportation efficiency. A further advantage is that each individual landing call to which a car is assigned is answered by the car with the lowest evaluation value. In this way, the multiple cars are evenly loaded with people, further improving transportation efficiency.

The present invention will be explained in more detail based on specific examples shown in the accompanying drawings.

In FIG. 1, for example, three elevators a,
The hoistway of one elevator a of the elevator group consisting of elevators b and c is designated by the reference numeral 1. The hoisting machine 2 operates in the hoistway 1 and has a double car 4 configured by two cars 5 and 6 arranged in a common car frame.
is driven through the winding steel 3, the elevator installations selected by way of example corresponding to the 16 floors E1 to E16. The spacing between each car 5, 6 is selected to correspond to the spacing between two adjacent floors.
The hoisting machine 2 is controlled by a drive control device known from European patent no. This is realized by the microcomputer system 7.
Reference numeral 8 designates a measuring and regulating unit of the drive control device, which is connected to the microcomputer system 7 via the first interface IF1. Each of the cars 5 and 6 of the duplex car 4 has a load measuring device 9, a device 10 that signals the current operating state Z of the car, and a car call button 11. The devices 9, 10 are connected to the microcomputer system 7 via a first interface IF1. The car call button 11 as well as the landing call button 12 installed on each floor are connected via an input device 13, known for example from European Patent No. 0062141 (corresponding U.S. Pat. No. 4,488,220), as well as a second interface IF2. It is connected to a microcomputer system 7.

The microcomputer system 7 includes a landing call memory RAM 1 and two car call memory RAMs attached to the individual cars 5 and 6 of the multiple car 4.
2. RAM 3 and load memory RAM that stores the car load P _M of each car 5 and 6 at any given time.
4, two memories RAM5 and RAM6 for storing the operating status Z of cars 5 and 6, two partial evaluation value memories RAM7 and RAM8, and evaluation value memory RAM.
9, an allocation memory RAM 10, and an indicator memory for storing an indicator indicating which of the cars 5 and 6 is the car having the smaller evaluation value K at any given time.
RAM11, program memory EPROM, and memories RAM1 to RAM11 and
Microprocessor connected to EPROM
Consists of CPU. The symbols R1 and R2 designate first and second scanners of the scanning device, which scanners R1, R2 are registers that store addresses corresponding to floor numbers and directions of travel. The partial evaluation value memories RAM7, RAM8 have two storage locations v, h, corresponding to each car 5, 6 of the multiple car 4, for each scanning position. The symbol R3 designates a further register, a floor selector, which indicates, for a car in service, the addresses corresponding to the floors on which the car can still stop. As is known from the above-mentioned drive control devices, the floor selector address is associated with a deceleration distance, which is compared with the remaining distance generated in the remaining distance generator to the destination floor. If the compared distances are equal and a stop command is present, deceleration is initiated. If there is no stop command, the floor selector R3 is switched to the next floor.

According to FIG. 2, the comparison circuit VS, which is connected to the partial evaluation value memories RAM7, RAM8, the evaluation value memory RAM9 and the indicator memory RAM11, has two adders AD1, AD2 and a comparator KO. This comparison circuit is necessary for the work detailed below.
VS is composed of a microprocessor CPU.

The microcomputer system 7 for the individual elevators a, b, c is disclosed in European patent no. 0050304.
(corresponding U.S. Pat. No. 4,484,264) as well as a third interface IF.
3 and from European Patent No. 0050305 (corresponding US Pat. No. 4,434,466). Communication device 15 and fourth interface IF4
are connected to each other via the above, thus constituting a group control device according to the present invention.

The operation and function of the above-mentioned group control device will now be explained based on FIG.

Any one elevator a of the elevator group,
When an event corresponding to b or c occurs, such as inputting a car call, assignment to a landing call, or changing the position of the floor selector, the first scanner R1 attached to the elevator in question has the following evaluation value: An operation called a calculation cycle begins, starting at the position indicated by the floor selector and continuing in the direction of travel of the car. Here, it is assumed that the event occurs with respect to elevator a (time point). The individual cages 5 of the multiple cages 4 are processed by the microprocessor CPU of the microcomputer system 7 for each scanning position.
6. For each, the sum of the predicted waiting time of passengers waiting at the platform and the predicted boarding time of passengers in the car, also referred to as evaluation value K, is calculated according to the formulas in claims 2 and 3, and The coefficients k ₁ and k ₂ are determined in the same manner as in the case of a group controller for single-car elevators, which is known from European Patent No. 0 032 213 and works on the same principle. In the calculation process, each evaluation value K _Iv , K _Av , K _Ih , K _Ah is obtained separately, and these evaluation values are stored in the partial evaluation value memory RAM.
7, stored in memory locations v and h of RAM8.
K _Iv is an internal evaluation value corresponding to the predicted riding time of a passenger in a car located in the front with respect to the direction of operation;
K _Ih is an internal evaluation value corresponding to the predicted riding time of a passenger in a car located at the rear with respect to the direction of operation;
K _Av is an external evaluation value corresponding to the predicted waiting time of passengers on the floor at the scanning position of the car located at the front with respect to the running direction, and K _Ah is the external evaluation value corresponding to the predicted waiting time of passengers on the floor at the scanning position of the car located at the rear with respect to the running direction. This is an external evaluation value corresponding to the predicted waiting time. Thereafter, for each of the individual cars 5 and 6 of the duplex car 4, the overall evaluation values K _v and K _h of each car formed by the adders AD1 and AD2 of the comparator circuit VS are compared with each other, and as a result, the smaller evaluation value is selected. The indicator of the car 5 or 6 that it has is written into the indicator memory RAM11. If, for example, the car 5 or 6 located at the rear in the travel direction has a smaller evaluation value, this is indicated by a logic "1" (FIGS. 1 and 2). If the indicator “1” is present, then
The evaluation value K _h of the rear car is stored in the evaluation value memory RAM9. Scanner R1 is then switched to the next floor and the calculation process is repeated with the new address indication.

After the end of the evaluation value calculation period KBZ, the second scanners R2 of all elevators a, b, c simultaneously start an operation, hereinafter referred to as evaluation value comparison period KVZ, which starts from the first floor. (point in time). The evaluation value comparison cycle KVZ is started, for example, at a rate of 5 to 10 times per second. For each scanning position, the evaluation value K _v or K _h stored in the evaluation value memory RAM 9 for elevators a, b, and c is determined by the comparator 14.
An assignment command in the form of a logic "1" can be stored in the assignment memory RAM 10 of the elevator a, b, c which has the smallest evaluation value K and is compared with one another. b and c indicate the floors to which they are optimally allocated in terms of time. Depending on the results of the above comparisons, e.g.
At scanning position 9, the assignment to elevator b is canceled and elevator a is assigned to the hall call instead. According to one example, if the landing call for floor E9 is stored and the floor selector R3 indicates this floor E9 (FIG. 1), deceleration will start in elevator a if the above conditions are met. Good morning. At this time the indicator memory RAM
The presence of the mark "1" in 11 gives the remaining distance corresponding to the next floor selector position, so that the rear car 4 of the duplex car 4, in one example, the rear car 5 or 6 with fewer people on board. will stop at floor E9. Due to the new assignment at scanning position 9, a new evaluation value calculation cycle KBZ is started in each of elevators a and b, and since this calculation cycle has priority, the evaluation value comparison cycle KVZ is interrupted. .
While the evaluation value calculation period KBZ of elevator b continues uninterrupted, the evaluation value calculation period of elevator a is interrupted at and between times due to the drive adjustment process. Subsequently, the evaluation value comparison starts from the upward direction of scanning position 10 and continues up to the downward direction of scanning position 9. However, it is interrupted again (point in time) by the occurrence of an event, for example a change in the floor selector position for elevator c. After the end (point in time) of the evaluation value calculation cycle KBZ of elevator c caused by the above situation, the evaluation value comparison cycle KVZ begins,
This cycle continues until it ends in the downward direction of scanning position 2. A further evaluation value calculation cycle KBZ of the elevator a, triggered for example by a car call, proceeds at and between the times, after which the next evaluation value comparison cycle KVZ begins.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of a group control device according to the present invention relating to one elevator in an elevator group consisting of three elevators, and FIG. 2 is a schematic illustration of an elevator comparison circuit of the group control device of FIG. The explanatory diagram shown in FIG. 3 is a time chart showing the progress of control. 1...Elevator hoistway, 2...Hoisting machine, 3
...Wound steel, 4...Double cage, 5, 6...Cage, 7
... Microcomputer system, 8 ... Measurement and adjustment unit, 9 ... Load measuring device, 10 ...
. . . Operating status signaling device, 11 . . . Car call button, 12 . . . Hall call button, 13 .

Claims (1)

[Scope of Claims] 1. A compound car consisting of two cars arranged in a common elevator car frame, a car call memory, a load measuring device attached to the car, a landing call memory, and each of the elevator groups. An elevator group control device that is attached to an elevator and is equipped with a floor selector that indicates each possible stop floor, and a scanning device that has a scanning position that scans each floor according to the direction of operation. A control device is installed, each having one calculation device, said calculation device calculating, for each scanning position of the first scanner of the scanning device, an evaluation value of each car corresponding to the waiting time and boarding time of the passenger. In addition, there are two partial evaluation value memories for storing the calculated evaluation values of each car as partial evaluation values, one evaluation value memory, and one evaluation value memory for each scanning position of the second scanner of the scanning device. A comparison device for determining the car with the smallest evaluation value and an allocation memory are installed,
The allocation memory for the car with the lowest evaluation value is filled with allocation instructions for existing or future hall calls, and the partial evaluation value memory has two storage locations for each scanned position; The evaluation value calculated for each of the multiple cars is stored as a partial evaluation value, and a comparison circuit is connected to the partial evaluation value memory and the evaluation value memory. The evaluation values are compared, and the smaller evaluation value is stored in an evaluation value memory, and an indicator memory is connected to the comparison circuit and the floor selector, and this memory stores the indicator of the car with the smaller evaluation value. is stored, and the partial evaluation value to be stored in one of the partial evaluation value memories is determined when an assignment instruction exists for landing calls in the same direction on two adjacent floors and/or when a car call and a first partial evaluation value are stored. A group control device characterized in that it can be reduced when the scanning position of the scanner coincides with the scanning position of the scanner. 2 The evaluation value K is calculated according to the formula K=S・KI+K _A K _I =t _v (P _M +k ₁・R _E −k ₂・R _C ) K _A =k ₁ [m・t _n +t _v (R+Z)] In the above formula, S is the state coefficient, t _v is the delay time at intermediate stop, P _M is the load inside the car at the time of calculation, and R _E is the distance between the floor selector position and the scanning position. The number of allotted landing calls, R _C is the number of car calls between the floor selector position and the scanning position, k ₁ is the expected number of passengers per landing call determined according to the transportation situation, k ₂ is the expected number of people getting off per car call determined according to transportation conditions, m is the number of floor intervals between the floor selector position and the scanning position, and t _n is the average operation per floor interval. time, R is the number of stops expected between the floor selector position and the scanning position, Z is the additional amount depending on the operating state of the car, t _v (R _M +k ₁・R _E −k ₂・R _C ) is the internal estimate corresponding to the boarding time of the passengers expected to be in the car that would occur during the stop at the floor indicated by the scanning position, and k ₁ [m・t _n + t _v (R+Z)] means the external evaluation value corresponding to the waiting time of the passenger expected to be on the floor indicated by the scanning position, and the evaluation value K _V , K of each individual car of the multiple car. _h is calculated for each scanning position according to the relational expression K _v = S _v · K _Iv + K _Av K _h = S _h · K _Ih + K _Ah , where K _Iv and K _Av are forward in the direction of travel. K _Ih and K _Ah mean the internal and external evaluation values of the car located at the rear in the running direction, and S _v and S _h mean the state coefficients. , in this case, if the car call and the scanning position match, S _v , S _h =0, and if there is an assignment instruction for calls in the same direction on two adjacent floors, S _v , S _h = 1, and the above 2. The group control device according to claim 1, wherein S _v and S _h =2 if neither of these conditions apply. 3. A counter is installed to count calls in pairs on two adjacent floors in the same direction to which a car is assigned, and the expected number of stops R between the floor selector position and the scanning position is It is calculated according to the relationship R = R _E + R _C - R _EC - R _EE , where R _E is the number of landing calls assigned to the car between the floor selector position and the scanning position, and R _C is the floor call. The number of car calls between the floor selector position and the scan position, R _EC is the number of matches between car calls and landing calls assigned to the car between the floor selector position and the scan position, and R _EE means the number of pairs of calls in the same direction of two adjacent floors that are assigned to the car between the floor selector position and the scanning position.
The group control device described in .