JP2007223764A - Elevator controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator controller capable of avoiding mutual collision of cars and improving responsiveness corresponding to a landing place call to increase operation efficiency. <P>SOLUTION: The direction of operation of shafts A to D is divided into a direction exclusively for ascent and a direction exclusively for descent. Operation service of each car in the same shaft is provided in only one direction, and inversion of the direction is inhibited until each car reaches reachable story, respectively. When each car reaches the reachable story, each car is moved to a pulling-back story set in each car in advance at the same time. By controlling operation in this way, it is possible to avoid mutual collision of cars and improve the responsiveness corresponding to a landing place call to increase operation efficiency. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevator control apparatus having a plurality of independent cars in the same hoistway.

  In a building with high elevator use efficiency such as a high-rise building, an elevator in which a plurality of independent cars are put into service in one shaft (hoistway) is used. Such an elevator is called a “multi-car elevator”.

  Multicar elevators can be expected to improve transportation efficiency because each car can move independently compared to double deck elevators. However, unlike a double-deck elevator in which two cars are always connected, there is a possibility that cars in the same shaft may collide with each other if the operation method is incorrect. For this reason, special control is required to improve transportation efficiency while reliably preventing collisions between cars.

Conventionally, as a proposal related to operation control of a multi-car elevator, for example, as shown in Patent Document 1, an occupied section is determined and operation control is performed in that section, or a dedicated zone for each car as shown in Patent Document 2 There are things that provide.
JP 2003-81542 A JP 2003-160283 A

  The operation control of the multi-car elevator as described above is effective as a method of avoiding collision between cars, but there is a problem that a section that cannot be entered for each car is formed. In addition, in order to avoid collision between cars, standby time and avoidance operation are required, and there is a problem that response to a hall call is reduced.

  The present invention has been made in view of the above points, and it is an object of the present invention to provide an elevator control device that can avoid collision between cars and improve responsiveness to hall calls to increase operation efficiency. And

  The present invention provides an elevator control apparatus in which a plurality of shafts are arranged in parallel, and a plurality of independent cars are provided in these shafts. Based on the operating direction of each shaft determined by the operating direction determining means, the driving service of each car in the same shaft is limited to one direction, and the floors are accessible to each car. Direction limiting means for prohibiting direction reversal until reaching, and pullback control means for moving each car to the floor set as the pullback floor when the direction reversal prohibition state by the direction limiting means is released It is provided and configured.

  According to the present invention, in an elevator having a plurality of independent cars in the same shaft, it is possible to avoid collisions between cars and improve responsiveness to landing calls, thereby improving operation efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a bank configuration of an elevator according to the first embodiment of the present invention, and shows a configuration as a multi-car elevator group management system with four shafts as one bank.

  The four shafts indicated by A to D are each provided with two upper and lower cars independently. That is, the car A1 and A2 are provided on the shaft A, the cars B1 and B2 are provided on the shaft B, the cars C1 and C2 are provided on the shaft C, and the cars D1 and D2 are provided on the shaft D. And can travel. In the following, a car positioned on the same shaft is referred to as an “upper car”, and a car located on the lower side is referred to as a “lower car”.

  Here, in this embodiment, the operation directions of the shafts A to D are divided into ascending only and descending only. In addition, the operation service of each car in the same shaft is only in one direction, and direction reversal is prohibited until each car reaches a floor that can reach each car. When each car reaches the reachable floor, it moves to the pull-back floor set in advance at the same time.

  In the example of FIG. 1, the shafts A and C are dedicated to ascending and the shafts B and D are dedicated to descending. In the shafts A and C, only when each car is moving in the upward direction, the driving service is performed in response to the hall call on each floor, and when the car is moving in the downward direction, it does not respond to the hall call. On the other hand, in the shafts B and D, only when each car is moving in the ascending direction, it responds to the hall call on each floor, and when it is moving in the up and down direction, it responds to the hall call. do not do. In shafts A and C, the lowest floor is the pull-back floor, and in shafts B and D, the top floor is the pull-back floor. The pullback floor is the floor that returns when the car finishes the driving service.

  Now, the movement of each car on the ascending dedicated shaft and the descending dedicated shaft will be described assuming a building of 1F to 16F.

  FIG. 2 is a diagram showing the movement of the upper car A1 and the lower car A2 in the shaft A dedicated for ascent.

  In the ascent-only shaft A, as shown in FIG. 2 (a), the lowest floors 1F and 2F are the pull-back floors, and the upper car A1 is waiting at 2F and the lower car A2 is waiting at 1F. In this state, as shown in FIG. 5B, the upper car A1 and the lower car A2 move in the upward direction independently of each other, and perform driving service in response to the hall call. In the meantime, it is prohibited to reverse the direction and move in the downward direction.

  Here, as shown in FIG. 5C, when the upper car A1 and the lower car A2 end the service, they move to the floors that can reach each of them. The reachable floors here are the top floors 15F and 16F. That is, when the upper car A1 reaches 16F and the lower car A2 reaches 15F, the direction reversal prohibition state is canceled, and the upper car A1 and the lower car A2 are simultaneously pulled back to 1F and 2F.

  In this way, with the ascending-only shaft A, the operation service is only in the ascending direction, and when returning, the upper car A1 and the lower car A2 simultaneously move in the descending direction and repeat the operation of waiting on the respective pull-back floors. The same applies to the shaft C.

  FIG. 3 is a view showing the movement of the upper car B1 and the lower car B2 in the shaft B dedicated to lowering.

  In the ascent-only shaft B, as shown in FIG. 3 (a), the uppermost floors 15F and 16F are the pull-back floors, and the upper car B1 is on standby at 16F and the lower car B2 is on 15F. In this state, as shown in FIG. 5B, the upper car B1 and the lower car B2 move in the descending direction independently of each other, and perform driving service in response to the hall call. In the meantime, it is prohibited to reverse the direction and move in the up / down direction.

  Here, as shown in FIG. 5C, when the upper car B1 and the lower car B2 finish the service, they move to the floors that can reach them. The reachable floors here are the lowest floors 1F and 2F. That is, when the lower car B2 reaches 1F and the upper car B1 reaches 2F, the direction reversal prohibition state is released, and the upper car B1 and the lower car B2 are simultaneously pulled back to 15F and 16F.

  In this way, with the downward-dedicated shaft B, the operation service is only in the downward direction, and when returning, the upper car B1 and the lower car B2 simultaneously move in the upward direction and wait on the respective pull-back floors. The same applies to the shaft D.

  A specific configuration will be described below.

  FIG. 4 is a block diagram showing the overall configuration of the elevator control apparatus according to the first embodiment of the present invention.

  The elevator control device is divided into a group management control device 10 and a single control device 20. The group management control device 10 and the single control device 20 are each composed of a computer, and execute various control processes by starting a program. The group management control device 10 exists as a host control device that collectively manages a plurality of elevators, and performs hall call assignment control and the like. The single control device 20 receives the command from the group management control device 10 and controls the operation of the elevator. In FIG. 3, only one single control device 20 is shown, but actually, a plurality of single control devices 20 are provided corresponding to each shaft.

  The group management control device 10 includes a setting data storage unit 11, an operation direction determination unit 12, an allocation control unit 13, and a data communication unit 14.

  The setting data storage unit 11 stores setting data related to the operation direction for each shaft. The operation direction determination unit 12 determines the operation direction (upward direction or downward direction) for each shaft based on the setting data stored in the setting data storage unit 11. The allocation control unit 13 performs allocation control for hall calls based on the operation direction of each shaft determined by the operation direction determination unit 12. The data communication unit 14 transmits and receives data to and from the single control device 20.

  On the other hand, the single control device 20 includes a direction restriction control unit 21, a pull back control unit 22, a setting data storage unit 23, an operation control unit 24, a call input unit 25, and a data communication unit 26.

  The direction restriction control unit 21 limits the operation service of each car within the same shaft to only one direction based on the operation direction of each shaft determined by the operation direction determination unit 12, and each car can reach each other. Direction reversal is prohibited until the floor is reached. The pullback control unit 22 moves each car in the same shaft to the floor set as the pullback floor. The setting data storage unit 23 stores data on the retractable floor and the reachable floor set for each shaft.

  The operation control unit 24 controls the operation of each car. A car position detection device 30 is connected to the operation control unit 24. The car position detection device 30 detects the position of each car in the same shaft electrically or mechanically and outputs a detection signal to the operation control unit 24. The call input unit 25 inputs the hall call information of the call registration device 31 installed at the hall on each floor. The data communication unit 26 transmits and receives data to and from the group management control device 10.

Next, the operation of the first embodiment will be described.
FIG. 5 is a flowchart showing a flow of operation control processing in the first embodiment.

  Now, assume a case where four multi-car elevators are simultaneously activated to provide an operation service as shown in FIG. First, the operation direction is set for each shaft through the operation unit (not shown) provided in the group management control device 10 such that the shafts A and C are dedicated to ascending and the shafts B and D are dedicated to descending. Data on the set driving direction at this time is stored in the setting data storage unit 11.

  The operation direction determination unit 12 reads the operation direction data stored in the setting data storage unit 11 to determine the operation direction of each shaft, and outputs the determined data to the single control device 20 corresponding to each shaft. Thus, in the example of FIG. 1, the operation direction of each car is controlled so that the single control device 20 corresponding to the shafts A and C provides the driving service only in the upward direction through the direction restriction control unit 21 (step S101). Yes). On the other hand, in the single control device 20 corresponding to the shafts B and D, the traveling direction of each car is controlled through the direction restriction control unit 21 so as to provide the driving service only in the downward direction (No in step S101).

  Here, when the hall call is registered by the call registration device 31 installed on each floor (Yes in Step S102 / Yes in Step S110), the group management control device 10 assigns the optimum car through the assignment control unit 13. At that time, the assignment control unit 13 assigns the ascending hall call to the ascending dedicated shaft car and the descending hall call as the descending dedicated shaft car based on the operation direction determination data of each shaft. On the other hand, the ascending hall call is not assigned to the descending shaft car or the descending hall call is not assigned to the ascending shaft car.

  The response pattern for the hall call is the first response pattern in which the car goes straight to the hall call when the hall call is registered in the direction of travel, or the car is pulled back. There is a second response pattern for responding to a landing call after pulling back when a landing call is registered.

  FIG. 6 shows an example of a first response pattern for a hall call. FIG. 6 (a) is for ascending only, FIG. 6 (b) is for descending only, and a black triangle indicates a hall call. X1 is a car. Actually, two cars are provided on the same shaft, but only one car is shown here for the sake of easy understanding.

  As shown in FIG. 6A, for example, when the car X1 is on the 2nd floor and the landing call of 12F occurs, the ascending dedicated shaft moves in the ascending direction and responds to the landing call. As shown in FIG. 6 (b), when the car X1 is at 12F, for example, when a 2F landing call is generated, the lowering dedicated shaft moves in the downward direction and responds to the landing call.

  FIG. 7 shows an example of a second response pattern for a hall call. FIG. 7 (a) is for ascending only, FIG. 7 (b) is for descending only, and a black triangle indicates a hall call. X1 is a car. Actually, two cars are provided on the same shaft, but only one car is shown here for the sake of easy understanding.

  In the ascending dedicated shaft, as shown in FIG. 7 (a), for example, when the car call X1 is on the 10th floor and a landing call on the 5th floor is generated, the elevator once moves to the top floor (reachable floor), From there, return to the lowest floor (withdrawal floor) and respond to the hall call. As shown in FIG. 7 (b), for example, when the car X1 is on the 5th floor and a landing call on the 10th floor is generated, the lowering dedicated shaft once moves to the lowest floor (reachable floor). From there, return to the top floor (retraction floor) and respond to the hall call.

  In this way, the assignment control unit 13 assigns the optimal car based on the two response patterns. The operation control unit 24 of the single control device 20 sequentially responds to the hall calls assigned by the assignment control unit 13 (step S104 / step S112). If there is no boarding call, it will be in a standby state as it is (step S103 / step S111).

  When all landing calls are answered and the landing call is no longer assigned (Yes in step S105 / Yes in step S113), the operation control unit 24 detects the current position of each car in the same shaft through the car position detection device 30. (Steps S106 / S114). If it is an ascending shaft, the operation control unit 24 determines whether each car in the shaft has reached the top floor (step S107). Moreover, if it is a descent | fall exclusive shaft, the operation control part 24 will judge whether each cage | basket | car in a shaft has reached | attained the lowest floor (step S115).

  The uppermost floor and the lowermost floor here are floors that can be reached by each car in the same shaft. That is, in the example of the ascending dedicated shaft in FIG. 2, 16F is a floor that can be reached by the upper car A1, and 15F is a floor that can be reached by the lower car A2. Further, in the example of the downward dedicated shaft in FIG. 3, 2F is a floor that can be reached by the upper car B1, and 1F is a floor that can be reached by the lower car B2.

  The data of the floor that each car can reach is set in the setting data storage unit 23 in advance. The operation control unit 24 compares the top floor data and bottom floor data stored in the setting data storage unit 23 with the current car position to determine whether each car has reached the top floor or the bottom floor. Judge whether or not.

  In the case of the ascending dedicated shaft, if each car in the shaft has not reached the top floor (No in step S107), the operation control unit 24 moves each car to the top floor (step S108). In the case of the descending dedicated shaft, if each car in the shaft has not reached the lowest floor (No in step S114), the operation control unit 24 moves each car to the lowest floor (step S116).

  At this time, for example, when the preceding car is answering the call, the succeeding car waits on the spot. The assignment control unit 13 can assign a hall call to the waiting subsequent car. On the other hand, if the preceding car is dedicated to ascending, it reaches the top floor, and if it is dedicated to descending, it reaches the bottom floor, and if the following car is calling and answering or has not reached the top or bottom floor, direction restriction The control unit 21 prohibits reversing the direction of the preceding car and waits until the succeeding car reaches the top floor or the bottom floor. The assignment control unit 13 can assign a hall call to a waiting preceding car. However, the response pattern in this case is the pattern of FIG.

  In the case of a lift-only shaft, when each car in the shaft reaches the top floor (Yes in step S107), the single-unit control device 20 releases the direction reversal prohibition state by the direction limit control unit 21 and passes through the pull-back control unit 22 to the bottom. Each car is pulled back to the floor (step S109). The lowest floor mentioned here is a pull-back floor set for the upper car and the lower car in the lift-only shaft. In the example of the lift-only shaft in FIG. 2, 2F is the pull-back floor of the upper car A1, 1F. Is the return floor of the lower car A2. In the setting data storage unit 23, data of the return floor of each car with respect to the ascending dedicated shaft is set. The pull back control unit 22 performs pull back control of each car based on the pull back floor data stored in the setting data storage unit 23.

  Similarly, in the case of a dedicated shaft for lowering, when each car in the shaft reaches the lowest floor (Yes in step S115), the single controller 20 cancels the direction reversal prohibition state by the direction restriction control unit 21 and pulls back the control unit. Each car is pulled back to the top floor through 22 (step S117). The uppermost floor here is a pull-back floor set for the upper car and the lower car in the lower ascending dedicated shaft. In the example of the lower dedicated shaft in FIG. 3, 16F is the retracted floor of the upper car B1, 15F Is the return floor of the lower car B2. In the setting data storage unit 23, data of the pull-back floor of each car with respect to the descending dedicated shaft is set. The pull back control unit 22 performs pull back control of each car based on the pull back floor data stored in the setting data storage unit 23.

  Note that the assignment control for the car being pulled back is possible, but the response pattern is the pattern shown in FIG. When the pull-back is completed, it will sequentially respond to the hall call assignment again from that position.

  As described above, in an elevator in which a plurality of cars can independently travel within the same shaft, by restricting the operation direction to one direction for each shaft, there is no bias in the operation direction, and stable operation service is provided. Can be provided. Moreover, the collision directions of the cars can be avoided because the traveling directions of the cars in the same shaft are the same. As a result, control for avoiding collision and waiting time are reduced, and responsiveness to hall calls is improved. Furthermore, since the floor | floor which can drive | work for every cage | basket | car is not limited, transportation capacity improves.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
In the first embodiment, the ascending dedicated shaft is pulled back to the lowermost floor, and the descending dedicated shaft is pulled back to the uppermost floor. However, in the second embodiment, the retracting floor can be arbitrarily set.

  FIG. 8 is a block diagram showing the overall configuration of the elevator control apparatus according to the second embodiment of the present invention. The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. The difference from FIG. 4 is that the single controller 20 is provided with a pull-back floor setting unit 27.

  The pull-back floor setting unit 27 includes, for example, key switches, and is used by an operator to set a pull-back floor for each car of each shaft. The data of the withdrawal floor set by the withdrawal floor setting unit 27 is stored in the second storage area 23b of the setting data storage unit 23 for new setting. In the first storage area 23a of the setting data storage unit 23, there is data set as a pull-back floor set as a default in advance, that is, the lower floor for the ascending shaft and the upper floor for the descending shaft. It shall be remembered.

  FIG. 9 is a flowchart showing a flow of operation control processing in the second embodiment.

  In the case of the ascending shaft (Yes in Step S201), when each car reaches the top floor (Yes in Step S202), the direction reversal prohibition state is canceled by the direction restriction control unit 21 (Step S203). As described above, the top floor is a floor that can be reached by each car in the same shaft. In the example of the lift-only shaft in FIG. 2, 16F is a floor that can be reached by the upper car A1, and 15F Is the reachable floor of the lower car A2.

  Here, the pullback control unit 22 reads the pullback data for new setting stored in the second storage area 23b of the setting data storage unit 23. As a result, when the pull-back floor is newly set (Yes in step S204), the pull-back control unit 22 first determines whether or not the setting is correct (step S205). This is judged from the operating direction of the shaft and the positional relationship of each car. If the setting is correct (Yes in step S205), the pull-back control unit 22 performs control to return each car to the newly set floor (step S206).

  On the other hand, if there is an error in the new setting, such as when the preceding car overtakes the preceding car or when the same floor is set as the withdrawal floor for the upper and lower cars (No in step S205), the withdrawal control is performed. The unit 22 ignores the pull-back data, and performs control to pull back each car to the lowest floor based on the pull-back data set as default in the first storage area 23a of the setting data storage unit 23 (step S207).

  The same applies to the case where the return floor is not newly set in step S <b> 204, and the pull back control unit 22 is based on the pull back data set as default in the first storage area 23 a of the setting data storage unit 23. Then, control is performed to return each car to the lowest floor (step S207).

  In the case of the lowering dedicated shaft (No in Step S201), when each car reaches the lowest floor (Yes in Step S208), the direction reversal prohibition state is canceled by the direction restriction control unit 21 (Step S209). As described above, the lowermost floor is a floor that can be reached by each of the cars in the same shaft, and in the example of the dedicated lower shaft in FIG. 3, 2F is a floor that can be reached by the upper car B1, 1F is the reachable floor of the lower car B2.

  Here, the pullback control unit 22 reads the pullback data for new setting stored in the second storage area 23b of the setting data storage unit 23. As a result, when the pull-back floor is newly set (Yes in step S210), the pull-back control unit 22 first determines whether or not the setting is correct (step S211). This is judged from the operating direction of the shaft and the positional relationship of each car. If the setting is correct (Yes in step S211), the pull-back control unit 22 performs control to pull back each car to the newly set floor (step S212).

  On the other hand, if there is an error in the new setting (for example, setting so that the succeeding car overtakes the preceding car or the same floor is set as the withdrawal floor for the upper and lower cars) (No in step S211), the withdrawal control is performed. The unit 22 ignores the pull-back data and performs control to pull back each car to the top floor based on the pull-back data that is set by default in the first storage area 23a of the setting data storage unit 23 (step S213).

  The same applies to the case where the pull-back floor is not newly set in step S210, and the pull-back control unit 22 is based on the pull-back data that is set by default in the first storage area 23a of the setting data storage unit 23. Then, control is performed to return each car to the top floor (step S207).

  In this way, the pull-back floor can be set arbitrarily, so for example, if the call-back floor of one car in the same shaft is set as the intermediate floor, and it is made to respond to the hall call from there, the upper and lower cars can be made efficient It can be used to further improve responsiveness.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
In the first embodiment, the operation direction of each shaft is determined by preset operation direction data, but the third embodiment is characterized in that the operation direction is switched by an external input device. To do.

  FIG. 10 is a block diagram showing the overall configuration of an elevator control device according to the third embodiment of the present invention. The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. The difference from FIG. 4 is that the group management control device 10 includes an external input device 15.

  The external input device 15 is a device for instructing switching of the operation direction for each shaft, and is installed in, for example, a car, a control panel, a monitoring panel, or the like. In the operation direction determination unit 12, the operation direction of the shaft designated as a switching target by this switching instruction is switched to a direction opposite to the operation direction preset in the setting data storage unit 11.

  FIG. 11 is a flowchart showing a flow of operation direction switching processing in the third embodiment.

  First, the operation direction determination part 12 reads the operation direction data of each shaft preset in the setting data storage part 11 (step S301). At that time, if there is a switching instruction from the external input device 15 (Yes in step S302), the operation direction determination unit 12 operates in advance in the setting data storage unit 11 the operation direction of the shaft specified as the switching target. A direction opposite to the direction is determined, and the determined direction is output to the single controller 20 of each shaft to switch the operation direction (step S303). Note that the switching timing is when each car is on the top floor or the bottom floor, or when each car arrives at the return floor.

  On the other hand, if there is no switching instruction (No in step S302), the operation direction determination unit 12 determines the operation direction preset in the setting data storage unit 11, and outputs the determination data to the single controller 20 of each shaft. (Step S304).

  In this way, since the operation direction can be switched for each shaft by operating the external input device 15, for example, in the morning work hours, the number of dedicated ascending shafts is greater than that of the descending dedicated shafts, and the time for leaving the office at night The belt can be operated more efficiently by increasing the number of lowering shafts than the ascending shafts.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.
In the third embodiment, the operation direction of each shaft is automatically switched by the operator operating the external input device 15, but in the fourth embodiment, the operation direction of each shaft is changed depending on the time zone. It is characterized by switching automatically.

  FIG. 12 is a block diagram showing the overall configuration of an elevator control device according to the fourth embodiment of the present invention. The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. The difference from FIG. 4 is that the time management unit 10 is provided with a time zone setting unit 16.

  The time zone setting unit 16 is for an operator to arbitrarily set the time zone and the traveling direction of each shaft by a predetermined operation. Specifically, for example, from 7:00 to 9:00, shafts A to C are dedicated to ascending, shaft D is dedicated to descending, from 18:00 to 20:00, shafts A to C are dedicated to descending, shaft D is dedicated to ascending, In other time zones, the ratios for ascending and descending are changed according to the attendance time zone and the leaving time zone, such as the shafts A and C are dedicated to ascending and the shafts B and D are dedicated to descending. The time zone set by the time zone setting unit 16 and the data on the operation direction of each shaft are stored in the setting data storage unit 11. The operation direction determination unit 12 determines the operation direction of each shaft based on the setting data of the time zone and the operation direction of each shaft stored in the setting data storage unit 11.

  FIG. 13 is a flowchart showing a flow of operation direction switching processing in the fourth embodiment.

  First, the operation direction determination part 12 reads the setting data of the time zone memorize | stored in the setting data storage part 11, and the operation direction of each shaft (step S401). And the operation direction determination part 12 acquires the present | current time from the timing timer which is not shown in figure (step S402), determines the operation direction of each shaft according to the time slot | zone at that time, and determines the determination data of each shaft. The operation direction is switched by outputting to the single control device 20 (step S403). Note that the switching timing is when each car is on the top floor or the bottom floor, or when each car arrives at the return floor.

  Thus, since the operation direction of each shaft can be changed according to the time zone, for example, it is possible to increase the operation efficiency by increasing the number of dedicated to ascending in the working hours and increasing the dedicated to descending in the leaving time.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.
In the third embodiment, the driving direction switching control by the external input device is performed. In the fourth embodiment, the driving direction switching control by the time zone is performed. In the fifth embodiment, the landing in the ascending direction and the descending direction is performed. It is characterized by switching control of the direction of operation according to the ratio of calls.

  FIG. 14 is a block diagram showing the overall configuration of an elevator control device according to the fifth embodiment of the present invention. The same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. A difference from FIG. 4 is that the group call control unit 17 is provided in the group management control device 10.

  The hall call management unit 17 totals the number of hall calls in the upward direction and the number of hall calls in the downward direction, calculates a difference value between the two, and outputs the difference value to the operation direction determination unit 12. The operation direction determination unit 12 switches the operation direction of each shaft when the difference value exceeds a predetermined value.

  For example, it is assumed that the ratio of the ascending dedicated shaft and the descending dedicated shaft is normally 2: 2 based on the traveling direction data set in the setting data storage unit 11. Here, when the number of hall calls in the upward direction is larger than the number of hall calls in the downward direction and the difference exceeds a predetermined value, the number of dedicated lift shafts is increased to 3: 1. Conversely, when the number of landing calls in the downward direction exceeds the predetermined value and the number of landing calls in the upward direction exceeds the predetermined value, the number of dedicated lowering shafts is increased to 1: 3.

  FIG. 15 is a flowchart showing a flow of operation direction switching processing in the fifth embodiment.

  The hall call management unit 17 provided in the group management control device 10 acquires the call information of the call registration device 31 installed on each floor, and obtains the current number of hall calls in the upward direction and the number of hall calls in the downward direction. Aggregate (steps S501 and S502).

  Here, the operation direction determination unit 12 obtains a difference between the number of hall calls in the upward direction and the number of hall calls in the downward direction, which are tabulated by the hall call management unit 17 (step S503), and the absolute value of the difference is calculated. It is determined whether or not the predetermined value is exceeded (step S504). As a result, when the predetermined value is exceeded (Yes in Step S504) and the state has continued for a predetermined time (for example, 30 minutes) or longer (Yes in Step S505), the operation direction determination unit 12 The operation direction of each shaft is switched based on the difference value at that time (step S506).

  That is, if the number of hall calls in the upward direction is much larger than the number of hall calls in the downward direction and the state continues for a predetermined time or more, the number of dedicated lift shafts is increased by one and the ratio of both To 3: 1. Conversely, if the number of hall calls in the downward direction is much larger than the number of hall calls in the upward direction, and the state continues for a predetermined time or more, the number of dedicated lower shafts is increased by one, Switch the ratio to 1: 3.

  In this case, it is assumed that which shaft is to be switched is set in the setting data storage unit 11 in advance. If the number of shafts is not four but more, the number of shafts to be switched may be changed stepwise according to the difference value.

  Note that the switching timing is when each car is on the top floor or the bottom floor, or when each car arrives at the return floor.

  In this way, by comparing the number of hall calls in the upward direction and the number of hall calls in the downward direction, the operation direction of each shaft can be switched in accordance with the direction with the larger number of calls, so the operation efficiency can be further increased. .

  In each of the above embodiments, an explanation has been given on the assumption that an elevator has two upper and lower cars in the shaft, but the present invention is also applicable to an elevator in which a larger number of cars can travel independently. .

  Further, the number of shafts is not limited to four as in the example of FIG. 1, but may be a group management system in which a larger number of shafts are arranged in parallel.

  In addition, when switching the operation direction of each shaft, notification to that effect may be made by voice or text message at the landing on each floor so that the user is not confused.

  In short, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various forms can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

FIG. 1 is a diagram showing a bank configuration of an elevator according to the first embodiment of the present invention. FIG. 2 is a view showing the movement of the upper and lower cars in the ascending dedicated shaft in the same embodiment. FIG. 3 is a view showing the movement of the upper and lower cars in the descending dedicated shaft in the same embodiment. FIG. 4 is a block diagram showing the overall configuration of the elevator control apparatus according to the embodiment. FIG. 5 is a flowchart showing a flow of operation control processing in the embodiment. FIG. 6 is a diagram showing an example of a first response pattern for a hall call in the same embodiment. FIG. 7 is a diagram showing an example of a second response pattern to the hall call in the same embodiment. FIG. 8 is a block diagram showing the overall configuration of the elevator control apparatus according to the second embodiment of the present invention. FIG. 9 is a flowchart showing a flow of operation control processing in the embodiment. FIG. 10 is a block diagram showing the overall configuration of an elevator control device according to the third embodiment of the present invention. FIG. 11 is a flowchart showing a flow of operation direction switching processing in the embodiment. FIG. 12 is a block diagram showing the overall configuration of an elevator control device according to the fourth embodiment of the present invention. FIG. 13 is a flowchart showing a flow of operation direction switching processing in the embodiment. FIG. 14 is a block diagram showing the overall configuration of an elevator control device according to the fifth embodiment of the present invention. FIG. 15 is a flowchart showing a flow of operation direction switching processing in the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Group management control apparatus, 11 ... Setting data storage part, 12 ... Operation direction determination part, 13 ... Assignment control part, 14 ... Data communication part, 15 ... External input device, 16 ... Time zone setting part, 17 ... Platform call Management unit, 20 ... Single control device, 21 ... Direction restriction control unit, 22 ... Retraction control unit, 23 ... Setting data storage unit, 24 ... Operation control unit, 25 ... Call input unit, 26 ... Data communication unit, 27 ... Retraction Floor setting unit, 30 ... car position detection device, 31 ... call registration device.

Claims (7)

In an elevator control apparatus in which a plurality of shafts are arranged in parallel and a plurality of independent cars are provided in these shafts,
An operation direction determining means for determining an operation direction for each shaft;
Based on the operation direction of each of the shafts determined by the operation direction determining means, the operation service of each of the cars in the same shaft is limited to only one direction, and the floors on which each of the cars can reach each Direction limiting means for prohibiting direction reversal until reaching
An elevator control device, comprising: pull back control means for moving each of the passenger cars to a floor set as a pull back floor when the direction reversal prohibition state by the direction restriction means is released.   2. The elevator control device according to claim 1, further comprising pull-back floor setting means for arbitrarily setting the pull-back floor.   The pullback control means determines whether or not the pullback floor set by the pullback floor setting means is correct and moves each of the passenger cars to a predetermined floor if it is not correct. The elevator control apparatus according to 2. Comprising a switching instruction means for instructing switching of the operation direction for each shaft;
2. The elevator control device according to claim 1, wherein the operation direction determining means switches the operation direction of each shaft in accordance with a switching instruction by the switching instruction means. A time zone setting means for setting the time zone and the operating direction of each shaft corresponding to the time zone;
2. The elevator according to claim 1, wherein the travel direction determining means switches to the travel direction of each of the shafts corresponding to the time zone when the time zone set by the time zone setting means is reached. Control device. Totaling the number of hall calls in the upward direction and the number of hall calls in the downward direction, equipped with hall call management means for obtaining the difference value,
The operation direction determining means switches the operation direction of each shaft based on the difference value when the difference value obtained by the hall call management means exceeds a predetermined value. Elevator control device.   The operation direction determination means switches the operation direction of each shaft based on the difference value when a state where the difference value obtained by the hall call management means exceeds a predetermined value continues for a predetermined time or more. The elevator control device according to claim 6.

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