EP0459169A1 - Group control for elevators with double cabins with direct allocation of calls - Google Patents

Abstract

A group control for double car elevators permits the upper as well as the lower cars to be used at a main stopping floor for travel to both even-numbered and odd-numbered floors. The control has a call memory for each car in which the target calls entered at the main stopping floor and identifying the target floors are stored. A switching circuit has an input connected to the call memories in such a manner that the double car is scheduled in dependence on the allocated call as stopping at floor pairs numbered even-odd or odd-even. An output of the switching circuit is connected to a switching device which excludes either the double cars stopping at floor pairs numbered even-odd or at floor pairs numbered odd-even from the allocation process in the case of a subsequent call to be allocated in order to maximize the possiblilities for coincident stops without losing flexibility.

Description

The invention relates to a group control for elevators with double cabins with immediate assignment of destination calls, the double cabins being formed from two cabins arranged in a common car frame, into which a main stop can optionally be entered, with call registration devices arranged on the floors, which have a keyboard for the Have input of calls for desired destination floors, with the elevators associated with the call memories, which are connected to the call registration devices, wherein when a call is input a storey and the destination storey call is stored, with load measuring devices provided in the upper and lower cabin of the double cabin , which are operatively connected to load stores, with the elevators assigned selectors, each denoting the floor of a possible stopping, and with a device by means of which the entered calls are allocated to the elevators , according to the preamble of claim 1.

CH-PS 529054 has disclosed a control system for an elevator group with double cabins, in which the double cabins are designed in such a way that two adjacent floors can be operated simultaneously. In this case, the filling of a building should be achieved in the shortest possible time with approximately even occupancy of the double cabins by the fact that on the ground floor the passengers board the even-numbered upper floors in the upper cabin and the odd-numbered ones in the lower cabin, whereby the cabin callers for those not the Storeys assigned to the cabin are locked. As soon as the cabin has to stop for a floor call after leaving the ground floor, the lock is released so that the boarding person can travel to any floor.

Such lifts can carry twice as many passengers on each trip as lifts with single cabins. Since less has to be held, the same number of floors can be served in a shorter time, so that the conveying capacity is increased considerably. With this control, however, it can happen that passengers who do not pay attention to the division of the even and odd floors into the upper or lower cabin do not have to reach the desired floor and have to get off on another. It must also be considered a disadvantage that the pressure on passengers boarding at the main stop to use the correct cabin exists not only during the relatively short period of peak traffic, but also during the rest of the time.

In a control device for elevators with single or double cabins known from EP-A 0 301 178, call registration devices with keys for entering calls for desired destination floors are arranged on the floors, whereas no call buttons are provided in the elevator cars. At the main stopping point, call registration devices with keys for even-numbered destination floors are arranged on the access for the upper cabins of the double cabins, while the entry for the lower cabins of the double-cabins has call registration devices with buttons for odd-numbered destination floors. In a further exemplary embodiment it is proposed to use call registration devices with 10-keyboards, the keys for the odd-numbered target floors being disabled on the upper access and the keys for the even-numbered destination floors being disabled on the lower access. With this control device too, a passenger has to think carefully about which access to use in order to reach the desired destination. If the wrong access is used, the mistake can be noticed before entering the cabin, so that the correct destination can be reached by changing the access.

EP-A 0 356 731 discloses a group control described for individual cabins, which uses the shortest waiting time of all passengers as a criterion for the assignment of the cabins to the calls entered. With this control, the destinations can also be entered on the floors, for example by means of call registration and display devices proposed with EP-A 0 320 583. Immediately after the registration and transmission of a call to a call memory structured according to the input and destination floors, a computer in the form of a microprocessor determines an amount for each cabin, based on elevator-specific data, which corresponds to the waiting time, which corresponds to the waiting time when the call is served for the passengers would arise. The operating costs are transferred to a cost register immediately after the calculation and then immediately compared with the operating costs of the other elevators by means of a comparison device. In this case, an allocation instruction that has the lowest operating costs is stored in an allocation memory of the elevator. Immediately after the cabin / call assignment has been made in this way, the elevator and its location in question are displayed in a display field of the activated call registration and display device, so that the passenger can go to the assigned landing door in good time.

The invention has for its object to improve the control devices mentioned initially in the prior art in such a way that both elevators and lower cabins of the double cabins can be used for trips to even and odd floors in elevators with double cabins in the main station.

This object is achieved by the invention characterized in claim 1. A call memory is assigned to the upper and lower cabin of a double cabin, in which the calls entered at the main station and identifying the destination floors are stored. A On the input side, the circuit is connected to the call memories in such a way that, depending on an assigned call, the double cabin in question is defined as holding on even-odd or odd-numbered floor pairs. On the output side, the circuit is connected to the comparison device via a switching device, so that depending on a further call that is yet to be allocated, either the double cabins on odd-numbered floors or those on odd-numbered floor pairs cannot participate in the comparison and allocation process. A call is assigned immediately after the entry, the elevator in question and its position being displayed on a display panel of the activated call registration device.

The advantages achieved with the invention can be seen in the fact that the passengers in a main bus stop no longer have to consider whether they have to get into the upper or lower cabin of a double cabin in order to reach the desired floor, since the control system is able to to provide a suitable cabin on both the upper and lower access. The initially mentioned advantage that double cabin lifts have to stop less for dropouts when traveling from the main stop than single cabin lifts remains fully intact. The preference for coincident stops is still possible, whereby the possibility of keeping odd or even on the same circulation improves the availability of the cabins and shortens waiting times.

Fig. 1

eine schematische Darstellung der erfindungsgemässen Gruppensteuerung für einen Aufzug einer Aufzugsgruppe mit Doppelkabinen,

Fig. 2

eine schematische Darstellung eines einem Aufzug zugeordneten Teiles der Gruppensteuerung gemäss Fig. 1,

Fig. 3

eine schematische Darstellung eines einem Aufzug zugeordneten Schaltkreises der Gruppensteuerung gemäss Fig. 1 und

Fig. 4

eine schematische Darstellung der Rufspeicher von drei Aufzügen einer Aufzugsgruppe mit Doppelkabinen.

The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing. Show it:

Fig. 1

2 shows a schematic representation of the group control according to the invention for an elevator of an elevator group with double cabins,

Fig. 2

2 shows a schematic illustration of a part of the group control according to FIG.

Fig. 3

a schematic representation of a circuit associated with an elevator of the group control according to FIGS. 1 and

Fig. 4

is a schematic representation of the call memory of three elevators of an elevator group with double cabins.

1, 1 denotes an elevator shaft of an elevator A of an elevator group consisting of several elevators. A conveyor machine 2 drives, via a conveyor cable 3, a double cabin 4, which is guided in the elevator shaft 1 and is formed from two cabins 5, 6 arranged in a common car frame, sixteen floors E1 to E16 being operated according to the elevator system chosen as an example. The distance between the two cabins is selected so that it matches the distance between two adjacent floors. A main stop E0 provided, for example, on the ground floor has a lower entrance L1 to the lower cabin 5 and an upper entrance L2 to the upper cabin 6 of the double cabin 4, the upper entrance L2 being connected to the lower entrance L1 by an escalator 7. The carrier 2 is controlled by a drive control known from EP-B 0 026 406, the setpoint generation, the control function and the stop initiation being implemented by means of a microcomputer system 8 which is connected to measuring and actuating elements 9 of the drive control. The microcomputer system 8 also calculates, as is known, for example, from EP-A 0 356 731, from elevator-specific data a sum corresponding to the waiting time of all passengers, also called service costs, which is used as the basis for the call allocation process. The cabins 5, 6 have load measuring devices 10, which are also connected to the microcomputer system 8. Call registers known from EP-A 0 320 583, for example, are on the floors Display devices 11 are provided, which have 10-keyboards, by means of which calls can be entered for trips to desired target floors. In the assumed method of serial data input, for example, the call registration and display devices 11 are connected to the microcomputer systems 8 via serial interface modules (not shown) and a serial data conductor 12. The microcomputer systems 8 of the individual elevators in the group are connected to one another via a comparison device 13 known from EP-B 0 050 304 and a party line transmission system 14 known from EP-B 0 050 305.

The part of the microcomputer system 8 that is schematically shown in FIG. 2, for example, assigned to elevator A, has a call memory 20, 21 for each of the lower and upper cabin 5, 6 of a double cabin 4, to which an allocation memory 22, 23 is assigned . The call memories 20, 21 and allocation memories 22, 23 have memory locations corresponding to the number of floors for each direction of travel, only the memories associated with the upward direction of travel being shown. The call memories 20, 21 each consist of a first memory 20.1, 21.1 and a second memory 20.2, 21.2, the calls storing floors being stored in the first memories 20.1, 21.1 and the calls characterizing the destination floors in the second memories 20.2, 21.2 . 24 denotes an operating cost register intended for storing the operating costs. A first selector 25 assigned to the lower car 5 and a second selector 26 assigned to the upper car 6 in the form of further registers form addresses corresponding to the floor numbers, by means of which the memory locations of the memories 20, 21 can be addressed. The selectors 25, 26 each show the floor on which the double cabin 4 with the lower or upper cabin 5, 6 could still stop, for which purpose the second selector 26 for the first and the downward travel for the first selector 25 for the downward travel the second is one floor ahead. The call memory 20, 21 and the allocation memories 22, 23 are read-write memories which, like also registers 24, 25, 26, are connected to the bus 27 of the microcomputer system 8. The calls stored in the call memories 20, 21 in accordance with example FIG. 2 and the allocation instructions stored in the allocation memories 22, 23 are symbolically marked with "1", the allocation instructions expressing that the call pair L1 / E5 of the lower car 5 and the call pair L2 / E8 of the upper cabin 6 of the double cabin 4 of elevator A is allocated. 28 denotes a load memory, 29 a door time memory and 30 a travel time memory, which are also connected to the bus 27 of the microcomputer system 8. The memories 28, 29, 30 known from EP-A 0 356 731 cited above are read-write memories in which data for the calculation of the service costs are stored. Load values are stored in the load memory 28 per floor in the form of a number of persons who are in the respective lower or upper cabin 5, 6 when they stop or drive past a floor and which are calculated on the basis of the calls entered. In this case, load values formed from incorrect call inputs can be corrected by comparison with the values determined by the load measuring devices 10. The door opening and closing times of the elevator in question are stored in the door time memory 29 for each floor, while the journey times of the relevant double cabin 4 between a particular floor and every other floor are stored in the travel time memory 30. The service cost register 24 is connected to the comparison device 13 via a switching device 31 in the form of tristate buffers, the activation connections of the tristate buffers being connected to the output of a circuit 32 described in more detail below.

The circuit 32 consists of an OR gate 33, which has six inputs, which are each assigned to six successive floors. In a first execution according to 2, three of the inputs are each connected to outputs of the memory cells of the second memory 21.2 of the upper cabin 6 which are assigned to the odd-numbered floors, and the other three inputs are each connected to the outputs of the memory cells of the second memory 20.2 of the lower cabin 5 which are assigned to the even-numbered floors connected. In a second embodiment, however, as shown in FIG. 3, three of the inputs of the OR gate 33 are each connected to outputs of the memory cells of the second memory 21.2 of the upper cabin 6 assigned to the even floors, and the other three inputs are each connected to the Outputs of the memory cells assigned to the odd-numbered floors of the second memory 20.2 of the lower cabin 5 are connected. The output of the OR gate 33 is connected to the activation connections of the tristate buffers. The circuit 32 formed by the microcomputer system 8, for example on the basis of a program, is activated in each case when a call to be allocated is stored. Depending on the target floor in question and the memory in which the call was transmitted, either the connections according to the first or second embodiment are established in such a way that the target floor is assigned to the middle of three floor pairs defined by the circuit 32.

4 shows only the second stores 20.2, 21.2 of the lower and the upper cab 5, 6 of the respective double cab 4 for three elevators A, B and C of an elevator group. The distribution of the destination calls entered on the lower or upper access L1, L2 (FIG. 1) and labeled "1" between the second memories 20.2, 21.2 is explained in more detail using an example in the following functional description. The double cabin 4 of elevator A on even-odd-numbered floor pairs and the double cabin 4 of elevator B on odd-numbered floor pairs are located in the area of three adjacent floor pairs holding fixed, while the double cabin 4 of the elevator C is not yet fixed.

The group control described above works as follows:
When a call is entered, the address of the call input storey and that of the destination storey are transmitted via the serial data conductor 12 to the microcomputer systems 8 of all elevators, only one call registration and display device 11 being able to access the serial data conductor 12 at a time. If the call is entered on the lower or upper access L1, L2 of the main stop E0, the microprocessors of the microcomputer systems 8 interpret the address of the call input storey in such a way that the call pair in question is either written only into the call memory of the upper or only the lower booths (example Fig. 2, L2 / E8). Now it is assumed, for example, that calls for the floors E8 and E7 are entered on the upper entrance L2 and calls for the floors E5 and E6 on the lower entrance L1. It is further assumed that if the output of the circuit 32 is logic "0", the switching device 31 is conductive. After the call for floor E8 has been entered on the upper access L2, the call is transmitted to the call memories 21 of all the elevators assigned to the upper cabins 6, the circuit 32 being activated in accordance with the first embodiment in FIG. 2. Since the output of the memory cell assigned to the floor E8 is not connected to an input of the OR gate 33 and no call may yet be stored in the call memories 20, 21 of all elevators for the floors E5-E8, the switching device 31 remains in the conductive state so that all elevators can take part in the comparison. The operating costs for the new call pair are now calculated for all elevators in accordance with EP-A 0 356 731 already mentioned. Immediately after the calculation, the service costs are transferred to the service cost register 24 and to one another by means of the comparison device 13 proposed, for example, according to EP-B 0 050 304 compared. It may be assumed that elevator A has the lowest operating costs, so that an allocation instruction is written into its allocation memory 23 on floors L2 and E8 (FIG. 2). The new call pair is then deleted from the lifts without any assignment instructions. With the allocation of the call for floor E8, the double car 4 of the elevator A is fixed in the area of three adjacent even-odd-numbered floor pairs, each holding the upper car 6 on even-numbered floors.

When the call for floor E7 is entered on the upper access L2 and after the call has been transmitted to the call memories 21 of all elevators assigned to the upper cabins 6, the output of the OR gate 33 at the elevator A (FIG. 2) becomes logic "1" , so that the switching device 31 blocks and the elevator A cannot participate in the allocation process. In the other elevators, the circuit 32 is activated in accordance with the second embodiment, FIG. 3, the switching device 31 not being blocked. In the allocation procedure that now follows, the call for floor E7 should be allocated to elevator B (FIG. 3), so that the double cabin 4 of this elevator is fixed in the area of three adjacent odd-numbered floor pairs, each with the upper cabin 6 holding on odd-numbered floors . If the call for floor E5 is now entered on the lower entrance L1, elevator B cannot take part in the allocation procedure, the call being allocated to elevator A, for example (FIG. 2). The call for floor E6 also entered on the lower entrance L1 has the effect that elevator A is excluded from the allocation. According to the example, this call may be assigned to elevator B (FIG. 3). Immediately after a call has been allocated, the passenger is shown the assigned call and its location in a display field of the activated call registration and display device. If a destination call is saved for a pair of floors, either only for the lower or only for the upper cabin of a double cabin, the first selector will be used to initiate the stop 25 and in the second case the second selector 26 is effective (FIG. 4, elevator A, E5 / E6, E7 / E8).

In order to ensure that the lower and upper cabins 5, 6 are filled evenly during boarding at the main stop E0 during peak traffic, optical display devices can be provided which signal the more advantageous cabins to the newly arriving passengers depending on the destination calls already allocated. For example, information boards can be arranged on the entrances L1 and L2, on which it is displayed whether certain target floors can be reached more quickly by using lower or upper cabins 5, 6.

Claims (5)

Group control for elevators with double cabins with immediate assignment of destination calls, the double cabins (4) being formed from two cabins (5, 6) arranged in a common car frame, which can optionally be entered at a main stop (E0), also arranged on the floors Call registration devices (11), which have a keyboard for the input of calls for desired destination floors, with the call memories (20, 21) assigned to the elevators, which are connected to the call registration devices (11), with the input floor and a when entering a call the call characterizing the destination floor is stored, with load measuring devices (10) provided in the lower and upper cabin (5, 6) of the double cabin (4), which are in operative connection with load stores (28), associated with the elevators, each with the floor of a possible one Stops designating selectors (25, 26) and with a device by means of which the entered n calls are assigned to the elevators, the device having a computer for each elevator, which calculates operating costs corresponding to the waiting times of passengers from elevator-specific data, and an operating cost register (24) connected to the computer is provided, and the operating cost register (24) of all elevators are connected to a comparison device (13) which compares the operating costs of the elevators with one another, and the call in question is allocated to the elevator which has the lowest operating costs,
characterized, - That both the lower and the upper cabin (5, 6) of a double cabin (4) is assigned a call memory (20, 21), which consists of a first memory (20.1, 21.1) and a second memory (20.2, 21.2 ), with the calls characterizing the respective call input storey in the first memory (20.1, 21.1) and in the second Memories (20.2, 21.2) which store the calls which characterize the destination storeys, - That a circuit (32) is provided, which is connected on the input side to the memory cells of the second memories (20.2, 21.2) in such a way that, depending on an assigned call, the double cabin (4) in question as on even-odd or odd-numbered floor pairs holding is determined - That the circuit (32) is connected on the output side to a switching device (31) arranged in the connection between the service cost register (24) and the comparison device (13), so that when an additional call is allocated, either the odd-numbered or the odd-numbered double cabins (4) which hold even pairs of floors cannot participate in the comparison and allocation process, and - That, as is known per se, the call registration devices (11) have display devices and a call is assigned immediately after the entry, the assigned elevator and its location being displayed on a display panel of the activated call registration device (11). Group control according to claim 1,
characterized,
that a double cabin (4) is determined by an assigned call only for three, immediately adjacent floor pairs as holding on even-odd or odd-numbered floor pairs, the assigned call being assigned to the middle floor pair. Group control according to claim 2,
characterized, - That the circuit (32) has an OR gate (33) with six inputs, which are each assigned to six successive floors, - That in a first version three inputs each with Outputs of the memory cells of the second memory (21.2) of the upper cabin (6) assigned to the odd-numbered floors, and three inputs each connected to the outputs of the memory cells of the second memory (20.2) of the lower cabin (5) assigned to the even-numbered floors, - That in a second embodiment, three inputs of the OR gate (33) each at the outputs of the memory cells assigned to the even-numbered floors of the second memory (21.2) of the upper cabin (6), and three inputs each at the outputs of the odd-numbered floors Memory cells of the second memory (20.2) of the lower cabin (5) are connected, and - That the output of the OR gate (33) is connected to the activation connections of the switching device (31) in the form of tristate buffers. Group control according to claim 1,
characterized,
that a first selector (25) is assigned to the lower cabin (5) and a second selector (26) is assigned to the upper cabin (6), the first selector (25) being the call memory (20) of the lower cabin (5) and the second Selector (26) scans the call memory (21) of the upper cabin (6), and the second selector leads the first and the second selector one floor ahead during the descent and downward. Group control according to claim 1,
characterized,
that optical display devices are provided at the main stop (E0), by means of which the passengers are recommended or not recommended, depending on the destination calls already allocated, either the lower or the upper cabins (5, 6) for use on certain destination floors.

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