JPH08198530A - Group supervisory operation control system for elevator - Google Patents

Abstract

PURPOSE: To prevent the concentration of load on a specific computer even during the failure of a main task. CONSTITUTION: Group supervisory operation control devices 1-1-1-M are connected to unit control devices 2-1-2-N through a high speed transmission system 4. The group supervisory operation control devices and the unit control devices are respectively formed of singular or plural small computers, and it is so constituted that each group supervisory operation control device is put in action under the control of group supervisory operation control software while each unit control device is put in action under the control of unit control software. The high speed transmisson system 3 is used to deliver and receive control information necessary for elevator group supervisory operation control between each group supervisory operation control device and each unit control device. The low speed transmission system 4 is used to transmit information among each group supervisory operation control device, each unit control device, a landing call button 5 on each floor, a supervisory panel in a supervisory room, and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator group management control system for allocating an optimum elevator from an operating elevator group to hall call information generated on a certain floor.

[0002]

2. Description of the Related Art In recent years, when a plurality of elevators are installed, in order to improve the operation efficiency of elevators and the service to elevator users, elevators that respond to hall calls on each floor have been installed. Elevator group management control systems have been used that allocate reasonably and quickly using small computers such as microcomputers. That is, by using the elevator group management control system, when a hall call occurs on a certain floor, the optimum elevator is selected and assigned to the hall call, and other elevators respond to the hall call. I try not to let it.

The elevator group management control system is a system in which the above-mentioned functions are distributedly processed by a plurality of small computers such as microcomputers. In the conventional method, the main task that controls the main group management control is as follows.
A subtask group that exists on any one of the plurality of small computers, manages the operation of each single elevator, and manages an auxiliary group management control function of the main task, Distributed on small computers. As a result, for a hall call generated on a certain floor, the subtask groups are activated under the control of the main task, and optimal elevator allocation processing is performed.

FIG. 13 shows an example of a conventional elevator group management control system. That is, it is composed of one group management control device 1-1 and unit control devices 2-1 to 2-4 for the number of elevators, and the group management control device 1-1 has a group management control main function task 10-1. (In the figure, M-
1) is arranged, and the single control devices 2-1 to 2-
4 is a standby type group management control main function task 10-2.
10-5 (M-2 to M-5 in the figure) and the group management control sub-function task 11 (S1 for performing processing corresponding to the single control apparatus 2-1 in the figure, the single control apparatus 2-2) S2 for performing a corresponding process, S3 for performing a process corresponding to the single control device 2-3, and S for performing a process corresponding to the single control device 2-3.
4), and a single control function task 9 is arranged.
The transmission control task 12 is arranged in all control devices.

In the conventional elevator group management control system having such a configuration, one group management control device 1
Since the group management control main function task M-1 arranged in -1 determines the allocation processing for all hall calls, the group management control device 1-1 in which the group management control main function task M-1 is arranged is When a failure occurs, the optimum elevator allocation process cannot be executed. Therefore, in order to cope with the case where the group management control device 1-1 in which the group management control main function task M-1 is arranged fails, the stand-alone group management control mains are provided to the individual control devices 2-1 to 2-4. When the function tasks M-2 to M-5 are arranged and priorities are determined in advance between the individual control devices and the group management control device 1-1 fails,
The group management control main function task, which has been waiting on the highest priority unit control device, is configured to take over the processing.

[0006]

However, in the conventional elevator group management control system as described above, when the computer (group management control device) in which the group management control main function task is arranged fails, the group management is performed. Since all processing on the control unit is handed over to another computer (single unit control unit) with a predetermined highest priority, the computer that took over the process (single unit control unit)
However, there was a problem that the load increased and the processing performance of the entire system deteriorated.

The present invention has been proposed in order to solve the problems of the prior art as described above, and the purpose thereof is to provide a load to a specific computer even when a main task in elevator group management control fails. An object of the present invention is to provide an elevator group management control system capable of minimizing the performance deterioration of the entire system without concentrating.

[0008]

According to a first aspect of the present invention, a plurality of elevators are activated for a plurality of floors, and the elevator halls are generated based on the state information of each elevator for a hall call that occurs. An elevator group management control system that calculates an evaluation formula for determining operation, obtains an evaluation formula for each elevator by this, and allocates the elevator with the best evaluation value to the generated hall call as the optimum elevator In the main task for controlling the overall allocation of the elevator group, and a plurality of group management control device having a subtask group for controlling the allocation of each elevator group under the control of the main task. The main task and the subtask group are respectively multiplexed, and at least one of them is the operating system and the other is waiting. As a system, each of the multiplexed tasks, which is distributedly arranged in each of the group management control devices, transmits at least the status of its own task, status reception means for receiving the status, and multiplexing task. In the multiplexed task according to the order defined by the task priority management means. It is characterized by performing switching control of the elevator group by switching between the operating system and the standby system.

Further, according to the second aspect of the present invention, a plurality of elevators are activated for a plurality of floors, and the operation of the elevators is determined for the generated hall call based on the state information of each elevator. In the group management control system of elevators, which calculates the evaluation formula, obtains the evaluation formula for each elevator by this, and allocates the elevator with the best evaluation value to the generated hall call as the optimum elevator, The main task for controlling the overall allocation of the elevator group, and a plurality of group management control device having a subtask group for controlling the allocation of the elevator group in a single unit under the control of the main task. Tasks and subtasks are multiplexed, and at least one of them is active and the other is standby. , Each of the multiplexed tasks, which is distributed in each group management control device, transmits at least the status of its own task, status reception means for receiving the status, and When a failure of the current working task is detected by holding the status transmitted by the status transmission means by the status reception means by holding the task priority management means indicating the priority order, the task priority management means defines it. According to the order, the standby system task with the highest priority in the multiplex task is switched to the active system to perform elevator group allocation control.

Further, the invention according to claim 3 activates a plurality of elevators for a plurality of floors, and determines the operation of the elevators based on the state information of each elevator for the generated hall call. In the group management control system of elevators, which calculates the evaluation formula, obtains the evaluation formula for each elevator by this, and allocates the elevator with the best evaluation value to the generated hall call as the optimum elevator, The main task for controlling the overall allocation of the elevator group, and a plurality of group management control device having a subtask group for controlling the allocation of the elevator group in a single unit under the control of the main task. Tasks and subtasks are multiplexed, and at least one of them is the active system.
In addition, the other is a standby system, and each of the multiplexed tasks, which is distributedly arranged in each group management control device, transmits at least the status of its own task, and status reception means for receiving the status. , Holding task priority management means for indicating the priority order in the multiplexed task, receiving the status transmitted by the status transmission means by the status reception means, and based on the order defined by the task priority management means , When it is detected that a task with a higher priority than the current active task has started processing, the current active task becomes the standby task and the task that started the process becomes the active status. Is switched to perform elevator group allocation control.

The invention described in claim 4 is the same as claim 1.
Alternatively, in the elevator group management control system according to claim 2 or 3, a main task and a subtask group included in the plurality of group management control devices are controlled by a real-time operating system. Is.

The invention described in claim 5 is the same as claim 1.
In the elevator group management control system according to any one of claims 4 to 4, the task priority management means is a task priority management table.

Further, in the invention according to claim 6, in the elevator group management control system according to claim 5, the task priority management table is an area indicating a priority between the devices which take over the processing for each task. And an area showing the state of the corresponding device and an area showing the time when the state of the device is received.

[0014]

The operation of the present invention having the above construction is as follows. That is, in the invention according to claim 1, the status of each task transmitted by the status transmitting means at predetermined time intervals is received by the status receiving means, and based on the information, according to the order defined by the task priority management means. Since it is possible to appropriately switch the operating system and the standby system in the multiplexing task to perform the elevator group allocation control, it is possible to always operate the elevator in an optimum state.

Further, according to the second aspect of the invention, even if the currently running group management control device fails, the operating system in the multiplexed task is classified according to the order defined by the task priority management means. Since the standby system can be switched to perform the elevator group allocation control, the delay time for taking over the processing is short. Further, all the processes on the failed group management control device can be distributed and moved to a plurality of group management control devices instead of being moved to one specific group management control device. It is possible to prevent the load from being applied only to the group management control device.

Further, according to the third aspect of the invention, when the faulty group management control device is restored, a higher priority than the current active system task is obtained based on the order defined by the task priority management means. When it detects that the task has started processing, the current active task is set as a standby task, the task state is switched so that the task that started the processing becomes an active task, and elevator group allocation control is performed. Therefore, the elevator can always be operated in an optimum state.

Further, in the invention according to claim 4, since the main task and the subtask group provided in the plurality of group management control devices are controlled by the real-time operating system, the elevator is always operated in an optimum state. You can

Further, in the invention according to claims 5 and 6, the task priority management means is constituted by a task priority management table, and the task priority management table is used between the devices which take over the processing for each task. By providing an area indicating the priority of each of the tasks, an area indicating the status of the corresponding apparatus, and an area indicating the time when the status of the apparatus is received, it is possible to efficiently determine the priority of each task. it can.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. [1-1. Configuration of Embodiments] FIG. 1 is a block diagram showing a configuration of an elevator group management control system to which the present invention is applied. In the figure, 1-1 to 1-M are group management control devices that respectively perform elevator group allocation processing. These group management control devices 1-1 to 1-M are connected via a high-speed transmission system 3 and a low-speed transmission system 4 to unit control devices 2-1 to 2-N that control each elevator individually. ing. Further, the group management control devices 1-1 to 1-M and the single unit control devices 2-1 to 2-N are each configured by a small computer such as a single or a plurality of microcomputers, and each group management control device is The unit control devices 2-1 to 2-N are configured to operate under the control of the group management control software and under the control of the unit control software.

Further, the high-speed transmission system 3 includes control information necessary for elevator group management control between each group management control device 1-1 to 1-M and each unit control device 2-1 to 2-N. Used to give and receive. Furthermore, the low-speed transmission system 4 is
Each group management control device 1-1 to 1-M and each unit control device 2
It is used to transmit information such as -1 to 2-N, the hall call button 5 on each floor, and the monitoring panel 6 in the monitoring room. The hall call buttons 5 and the low speed transmission system 4 are connected via a transmission control device 7.

The elevator group supervisory control system of this embodiment having such a structure operates as follows. That is, when the hall call button 5 on a certain floor is pressed, each group management device 1-1 to 1-M closes the hall call gate corresponding to the hall call button 5 and sets the registration lamp, and at the same time high speed. Based on the information from the individual control devices 2-1 to 2-N sent via the transmission system 3, the optimum elevator to actually perform the service is determined from the elevator group of the entire system, It issues a control command to a single controller that controls the elevator. The single control device that has received this control command starts controlling the corresponding elevator using the control command as hall call information.

[1-1-1. Software Configurations of Group Management Controller and Standalone Controller] FIG. 2 is a block diagram of the group management controllers 1-1 to 1-M and the standalone controller 2- in FIG.
It is a block diagram which shows the structure of the software of 1-2-N. That is, as shown in FIG. 2, in the present embodiment, the real-time OS 8 which is an operating system executes a single control function task 9, a group management control main function task 10, a group management control sub-function task 11 and a transmission control task 12, respectively. Controlled, real-time OS
The scheduler in 8 starts and stops the tasks 9 to 12. Further, the control of the processing depending on the difference in the status of each task such as the operating system / standby system is also performed. That is, in the case of an active task, the scheduler activates and deactivates the task, and processes according to the received message. On the other hand, in the case of a standby task, it is not started by the scheduler and no message is received.

Of these tasks 9 to 12,
The unit control task 9 is the unit control device 2-1 to 2- mentioned above.
The group management control main function task 10 and the group management control sub-function task 11 are assigned to N and each group management control device 1-1 to 1
-M has. Further, the transmission control task 12 includes the group management control devices 1-1 to 1-M and the single control devices 2-1 to 2-.
It is given to each of N.

[1-1-2. Functions of Group Management Control Main Function Task and Group Management Control Sub-Function Task] Next, functions of the group management control main function task 10 and the group management control sub-function task 11 will be described.

The group management control sub-function task 11 has a function of controlling allocation of elevator groups in units of individual units. That is, this group management control sub-function task 11 is started by the group management control main function task when a hall call occurs on a certain floor, and calculates the evaluation value corresponding to the time required for the response of the elevator to be controlled. It is calculated based on a predetermined evaluation formula, and the result is returned to the group management control main function task 10.

The group management control main function task 10
Has a function of performing overall allocation control of the elevator group. In other words, this group management control main function task 10
When a hall call occurs, each individual control device 2-1 to 2-
Each group management control sub-function task 11 corresponding to N is activated. Then, the evaluation values for each elevator obtained by each group management control sub-function task 11 are collected and compared with each other to determine the elevator that can respond earliest to the hall call generation floor and control the elevator. It issues a control command to the individual unit control devices 2-1 to 2-N and controls the hall call button 5.

[1-1-3. Specific Example] Here, as a more specific example of the present invention, three group management control devices 1-
An elevator group management control system for controlling four elevators by providing 1,1-2, 1-3 will be described with reference to FIG. That is, on the group management control device 1-1, the group management control main function task 10-1 (in the figure, M-
1) and four group management control sub-function tasks 11 corresponding to each of the four elevators (S1-3 performing processing corresponding to the single control device 2-1 in the figure, single control device 2
-2, which performs processing corresponding to -2, single control device 2-
S3-1 for performing processing corresponding to No. 3, unit controller 2-4
(Shown as S4-2 for performing the processing corresponding to) is arranged.

Further, on the group management control device 1-2, a group management control main function task 10-2 (denoted by M-2 in the figure) and four group managements corresponding to the four elevators respectively. Control sub-function task 11 (in the figure, a single controller 2-1
S1-1 for performing the process corresponding to the above, S2-3 for performing the process corresponding to the single controller 2-2, S3-3 for performing the process corresponding to the single controller 2-3, corresponding to the single controller 2-4 (Shown as S4-1) for performing the processing is arranged.

Further, on the group management control device 1-3, a group management control main function task 10-3 (denoted by M-3 in the figure) and four group managements corresponding to the four elevators respectively. Control sub-function task 11 (in the figure, a single controller 2-1
S1-2 for performing the process corresponding to the above, S2-1 for performing the process corresponding to the single controller 2-2, S3-2 for performing the process corresponding to the single controller 2-3, and corresponding to the single controller 2-4 (Shown as S4-3 for performing the processing) is arranged.

Here, in the figure, M-1, S1 surrounded by a square
-1, S2-1, S3-1, S4-1 are operating tasks that are normally operating, and other tasks (M-2, M
-3, S1-2, S1-3 ...) are normally waiting, and are standby tasks that take over processing when an active task fails. Incidentally, M- 2, M- 3, S1- 2, the numbers marked with S1- 3 ... underline indicates the priority of the standby system tasks. That is, when the group management control device 1-1 fails, the group management control device 1-2 including the group management control main function task M-2 takes over the subsequent processing.

Further, each of the unit control devices 2-1 to 2-4 is provided with a unit control task 9 for controlling each elevator. Further, the group management control devices 1-1 to 1-3 and the single control devices 2-1 to 2-4
The transmission control task 12 is arranged in all of the above.

[1-2. Operation / Effect of Embodiment] In the following, in the configuration of FIG. 3, even if a certain group management control device fails, the load is concentrated on a specific computer and the processing performance of the entire system is not deteriorated. This will be described with reference to FIG.

First, the above tasks and the real-time OS 8
4 and the configuration of each task are shown in FIG. As shown in the figure, each task is managed by the task management table in the real-time OS 8, and the status of each task is stored as the task status. Further, the task-specific processing means 401 in each task is means for performing processing unique to each task, and the state transmission means 402 is means for transmitting the status of the own task to the multiplexed task of the own task, and the status reception means. Reference numeral 404 is a means for receiving the status of each task transmitted from the multiplexed task of the own task. Further, the task priority management table 403 has the configuration shown in FIG. 5, and is a table showing the priority between tasks for determining a task to take over the processing when an active task fails.

That is, in FIG. 5, the item "original operating task existence device" 501 indicates the device number in which the operating system task of the task holding the table (for example, group management control main function task) should exist. It is shown. The item “current operating task existence device” 502 indicates the number of the device currently operating as an active task. It should be noted that the values shown in the item “current operating task existence device” 502 are shown in the item “original operating task existence device” 501 if all the group management control devices are operating normally. Although it matches the value, if the device in which the original operating task exists fails, the number of the device in which the operating task that is operating by taking over the processing exists is displayed. The value does not match the value shown in the section "device" 501.

The "current operating task existence device" 50
The area below the item 2 indicates the state of the group management control devices 1-1, 1-2 ... With one row for each line, and the "priority list" 50
3, "task status" 504 and "status reception time" 505
It is composed of Here, the “priority list” 503
Is an area showing the priority between the devices that take over the processing for each task, the "task state" 504 is the area showing the state of the corresponding device, and the "state reception time" 505 is the time when the task state was received. Is an area showing. In addition,
The task states are "initial", "active", and "standby".
There are four states of "fault".

Next, FIGS. 6A to 6E show the state of the task priority management table of each task when all the devices are operating normally in the configuration of FIG. Is. For example, the task priority management table of the group management control main function task is represented as shown in FIG. That is, the item of "original operating task existence device" is "1" (meaning the group management control device 1-1), and the item of "current operating task existence device" is also "1" (group Management control device 1-1), and in the line corresponding to the group management control device 1-1 in the third line from the top, "task" is displayed in the "task status" column, and the status is recognized. "100" is displayed in the "status reception time" column as the time when the operation was performed.

Similarly, the group management control device 1 on the fourth line from the top
-In the row corresponding to -2, "wait" is displayed in the "task status" column.
Is displayed, and “101” is displayed in the “state reception time” column as the time when the state is recognized. In the line corresponding to the group management control device 1-3 on the fifth line from the top,
“Standby” is displayed in the “task status” field, and “98” is displayed in the “status reception time” field as the time when the status is recognized.

Further, in the section "Priority list",
"2" is displayed in the line corresponding to the group management control device 1-1 in the third line from the top. This is the "original operating tasks present device" when the group management control device 1-1 which is also "current operating task exists device" fails, then take over the process group management control device 1 2 Indicates that it is a waiting task that exists above. Also, "3" is displayed in the line corresponding to the group management control device 1-2 in the fourth line from the top. This indicates that when the group management control device 1-2 fails, it is the standby task existing on the group management control device 1-3 that takes over the processing next. further,
"-1" is displayed in the line corresponding to the group management control device 1-3 on the fifth line from the top. This is the group management control device 1
If -3 fails, it means that there is no group management control device that takes over the processing.

Further, the task priority management table of the group management control sub-function task S1 is represented as shown in FIG. 6 (B). That is, in FIG. 3, corresponding to the group management control sub-function task S1-1 being surrounded by a square, the item “original operating task existence device” is “2” (group management control device 1-2. In addition, the term "current operating task existence device" is also "2" (meaning group management control device 1-2). Furthermore, the group management control device 1 on the third line from the top
In the line corresponding to -1, "wait" in the "task status" column
Is displayed, and “101” is displayed in the “state reception time” column as the time when the state is recognized.

Similarly, the group management control device 1 on the fourth line from the top
-In the line corresponding to -2, "Activate" in the "Task status" column
Is displayed, and “103” is displayed in the “state reception time” column as the time when the state is recognized. In the line corresponding to the group management control device 1-3 on the fifth line from the top,
“Standby” is displayed in the “task state” column, and “99” is displayed in the “state reception time” column as the time when the state is recognized.

Further, in the section "Priority list",
"3" is displayed in the line corresponding to the group management control device 1-2 in the fourth line from the top. This is the "original operating tasks present device" when the group management control device 1-2 which is also "current operating task exists device" fails, then take over the process group management control device 1 3 Indicates that it is a waiting task that exists above. Further, "1" is displayed in the line corresponding to the group management control device 1-3 on the fifth line from the top. This indicates that when the group management control device 1-3 is broken, then take over the process is waiting tasks present on the group management control device 1 1. further,
"-1" is displayed in the line corresponding to the group management control device 1-1 in the third line from the top. This is the group management control device 1
If -1 fails, it indicates that there is no group management control device that takes over the processing. Hereafter, similarly,
The task priority management table of the group management control sub-function task S2 is represented as shown in FIG. 6 (C), and the task priority management table of the group management control sub-function task S3 is shown in FIG. 6 (D). The task priority management table of the group management control sub-function task S4 is represented as shown in FIG. 6 (E). As described above, the task priority management table is different for each task (see FIG. 6).

Further, the status transmitting means 4 shown in FIG.
Reference numeral 02 denotes a task priority management table requesting means 701 and a task priority management table receiving means 70 as shown in FIG.
2 and invoking task status transmitting means 703, and the operation flow is as shown in FIG. Further, the state receiving means 404 shown in FIG. 4 comprises an initial start-up determining means 704, a state updating means 705, a next operation task determining means 706, a state change determining means 707 and a task priority management table transmitting means 708. The operation flow is as shown in FIGS. 9 and 10. Note that FIG.
The flowcharts shown in FIGS. 9 and 10 will be described later.

In addition, the own task state 709 in FIG.
Is an area indicating the state of each task in the task management table managed by the real-time OS 8. The real-time OS 8 refers to this value and controls each task according to each state. Here, there are three task states: "initial", "operating", and "standby".

[Steady state processing] Next, each task transmits the status 709 of its own task, each task receives the status, and updates the task priority management table. The control main function task will be described as an example with reference to FIGS. 3 and 5 to 11. That is,
In the following description of the operation, it is assumed that the tasks are arranged as shown in FIG. 3 and the state of the task priority management table is the situation shown in FIG.

In the steady state, each task periodically sends the status 709 of the own task by the own task status sending means 703 to the multiplexed task of the task. That is, in step 803 in FIG. 8, after the elapse of a predetermined time, the process of transmitting the invoking task state to the multiplexed task of the task (step 804) is repeated. In addition, in the present embodiment, the fixed time is described as 1 second.

For example, the group management control main function task 10
-1 (M-1) is a group management control main function task 10-1 (M-1) to 10- which is a multiplexed task of the task.
3 (M-3), the invoking task status 709 “operating” is periodically transmitted. Similarly, the group management control main function task 10-2 (M-2) is also a group management control main function task 10-1 which is a multiplexing task of the task.
The task status 709 "standby" is transmitted to (M-1) to 10-3 (M-3), and the group management main function task 1
0-3 (M-3) is also the group management control main function task 10
-1 (M-1) to 10-3 (M-3) is transmitting the invoking task status 709 "standby".

On the other hand, each task receives the status message sent from the multiplexed task by the initial startup judging means 704 (step 901) and judges whether the status in the received message is "initial" (step 902). . Since the state received this time is “operating” or “standby”, the received state is passed to the state updating means 705, and this state updating means 70
5, the task status 504 in the row corresponding to the transmission source device in the task priority management table is updated to the received status, and the time at that time is set in the status reception time 505.

Next, in order to determine which task on which device should be the active system (whether a task having a higher priority than the currently active task is not operable), the next active task determining means 706 is activated. This next operation task determining means 706
Then, first, the state of the task on the "original operating task existence device" having the highest priority shown in the task priority management table is referred to (step 905), and the state is "standby" or "operating". If the difference between the status reception time and the current time is less than or equal to a predetermined time (for example, 2 seconds) (step 906), the status change processing is performed so that the task becomes the active system. The number of the device that should become the system is passed to the state change determination means 707.

In the situation of this embodiment shown in FIG. 6,
Since all the tasks on the “original operating task existence device” are operating, the state change determining unit 707 is activated. That is, in the group management control main function task, the task arranged in the group management control device 1-1 has the highest priority and the task is currently operating as an active system. The number “1” is passed to the state change judging means 707.

Here, the state change judging means 707 is means for deciding whether or not the state of the own task should be changed,
The number of the group management control device (new operating device) to be the next operating system, which is passed from the next operating task determining means 706,
The device numbers (currently operating devices) indicated in the item “current operating task existing device” 502 in the task priority management table are compared (step 911). When these two device numbers are the same, it is found that the task is running on the device with the highest priority in the currently operable group management control device, so the processing ends without switching the state. .
In other words, the group management control main function task determines that the new operating device is "1", but since the current operating device is "1" and equal, there is no need to switch the state.

[Fault Processing] Next, the group management control device 1
The flow of processing when -1 fails will be described. When the group management control device 1-1 shown in FIG. 3 fails, each task (group management control main function task M-1 and group management control sub-function task S1-3, S2) arranged on it fails.
-2, S3-1, S4-2) cannot transmit their internal states (invoking task state 709). On the other hand, each task arranged on the group management control devices 1-2 and 1-3 transmits its own state at each timing by the state transmitting means 402 shown in FIG.

In the above situation, the group management control main function task 10-2 (FIG. 3) on the group management controller 1-2 will be described below.
M-2) in FIG. 6A transmits a status message “standby” as shown in FIG.
Group management control main function task 10-2 on 2 and 1-3
And 10-3 show the flow of processing when received.

That is, the group management control main function task 1
0-2 and 10-3 are group management control main function task 1
The status message sent from 0-2 is received by the initial startup judging means 704 (step 901), and it is judged whether the status in the received message is "initial" (step 902). Since the state to be received this time is “standby”, the received state is passed to the state updating means 705, and this state updating means 705 corresponds to the transmission source device (group management control device 1-2) in the task priority management table. The column of “task state” 504 of the line is updated to the received state “standby”, and the time TC at that time is set in the column of “state reception time” 505.

Next, to determine which task on which device should be the active system (whether a task having a higher priority than the currently active task is operable), the next active task determining means 706 is activated. This next operation task determining means 706
Then, first, the state of the task and the state reception time on the "original operating task existence device" having the highest priority shown in the task priority management table are referred to (step 90).
5), the state is "standby" or "running", and
The difference between the status reception time and the current time is a predetermined time (for example,
It is determined whether or not (2 seconds) or less (step 906).

In this case, since the group management control device 1-1, which is the originally operating task existence device, has failed, the task status is displayed as "active", but this task status is not updated periodically, When the difference between the state reception time T and the current time TC is 2 seconds or more, the group management control devices 1-2 and 1-
Group management control main function tasks 10-2 and 10-
In No. 3, it is determined that the original operating task has failed. Therefore, the status of the task on the group management control device 1-1 is set to "failure" (step 907).

Then, the column of the "priority list" 503 is traced in order to refer to the task status on the group management control device of the next priority. When the value of the "priority list" indicates the group management control device having the next priority, the "task state" and the "state reception time" on the group management control device are referred to (step 909), and the step Return to 906. On the other hand, when the value of the "priority list" is "-1" (step 908), all the group management control devices are exhausted and it is found that there is no alternative device, so the function of the task is stopped. (Step 910).

As shown in FIG. 6A, in the task priority management table of the group management control main function task, it is shown that the group management control device 1-1 is followed by 1-2. Therefore, referring to the “task status” and the “status reception time” on the group management control device 1-2, the “task status” is “standby”.
Then, since the "state reception time" is equal to the current time in TC,
It can be determined that the task arranged on the group management control device 1-2 should become a new operating task. Therefore, the obtained number "2" of the device to be the active system is passed to the state change determination means 707.

As described above, the status change judging means 707.
Is a means to determine whether or not the status of the invoking task should be changed, and the number of the group management control device (new operating device) that should become the active system next, and the "current operation" in the task priority management table. The device number (currently operating device) indicated in the item "task existence device" 502 is compared (step 911). In the present embodiment, the number of the new operating device is "2", whereas the number of the current operating device is "1". Therefore, the group management control device in which the operating task should exist is the group management control device. 1
It is determined that -1 should be changed to 1-2.

Next, it is judged whether or not the "task status corresponding to the currently operating device" in the task priority management table is "active" (step 912), but it is already in step 9
In 07, the "task status" of the current operating device "1" has been updated to "failure", so the "task status" corresponding to the new operating device "2" is set to "active" and the "current operating task existence device" is set. The new operating device “2” is displayed in the section of “” (step 91).
4).

Subsequently, it is checked whether or not the new operating device corresponds to its own group management control device (hereinafter referred to as its own control device) executing the processing flow shown in FIGS. 9 and 10. (Step 915). Then, the group management control device 1-
2 group management control main function task 10-2 (M in FIG. 3
In -2), since the number "2" of the own control device matches the new operating device number "2", the own task state 709 is changed to "active" so that the own task becomes the active system (step). 916). On the other hand, in the group management control main function task 10-3 (M-3 in FIG. 3) on the group management control device 1-3, the number “3” of the self control device is the new operating device number “2”.
Since it does not match with, it does not need to change the status of the invoking task and can remain in "standby". Next, it is checked whether or not the currently operating device corresponds to the self control device (step 917). Since the currently operating system is the group management control device 1-1, the group management control main function task 10- The processing ends without any match between 2 and 10-3.

The task priority management table in the group management control main function task after the failure of the group management control device 1-1 is detected is as shown in FIG.
The state of each task on the group management control device is as shown in FIG.

Similar to the flow of processing of the group management control main function task, the group management control sub-function task S3 also has an operating task S3-1 operating on the group management control device 1-1 (see FIG. 3). ), The group management control device in which the active system task exists is changed according to the task priority management table of the group management control sub-function task S3 shown in FIG. 6D. That is, as shown in FIG. 6 (D), since the device having the next highest priority after the group management control device 1-1 is the group management control device 1-3, as shown in FIG. 11 (B) and FIG. In addition, the group management control sub-function task S3-2 on the group management control device 1-3 becomes a new operation system task. On the other hand, as is apparent from FIG. 3, the group management control sub-function tasks S1, S2, and S4 are associated with the active task (S
1-1, S2-1, S4-1) is the group management control device 1-1.
Since it does not exist on the upper side, even if the group management control device 1-1 fails, it is not affected and the movement of the active system task does not occur.

The task priority management table of the group management control sub-function task S3 after the failure detection of the group management control device 1-1 is as shown in FIG. 11B, and the group management control is performed. The status of each task on the device is as shown in FIG.

As described above, in the present embodiment, when the group management control device 1-1 fails, the processing of the task running on it is moved to one specific group management control device. Not the group management control devices 1-2 and 1-3
It can be dispersed in and moved. As a result, the load does not move only to a specific group management control device when a certain group management control device fails, and the load is distributed to the entire system, so that it is possible to suppress the performance deterioration of the entire system as much as possible. .

[Processing at the time of failure recovery] Next, the flow in the case where the failure of the group management control device 1-1 is recovered and the group management control device 1-1 is installed again in the elevator group management control system will be described. That is, when the failure of the group management control device 1-1 is recovered, the tasks (group management control main function task M-1 and group management control sub-function task S1-3 in FIG. 3 or FIG. 12) arranged thereon are recovered. , S2-2, S3-1 and S4-
2) starts sending their internal state.

In the above situation, the group management control main function task 10-1 (M
-1) shows the flow of processing until it returns to the steady state when it rises.

That is, the group management control main function task 1
When 0-1 (M-1) starts its operation, the state transmitting means 402 shown in FIGS. 4 and 7 is activated, and the task priority management table requesting means 701 is activated. The task priority management table requesting means 701 notifies other multiplexing tasks that the group management control main function task 10-1 (M-1) has started up, and receives the current task priority management table. A message whose state is "initial" is sent to the own task's multiplexed task (step 80 in FIG. 8).
1). Further, the task priority management table receiving means 702 waits for information in the task priority management table sent from another multiplexed task.

Next, the status receiving means 404 in the group management control main function tasks 10-1, 10-2 and 10-3 which received the "initial" status message is sent from the group management control main function task 10-1. The status message to be received is received by the initial startup judging means 704 (step 901 in FIG. 9), and it is judged whether the status in the received message is "initial" (step 902). Since the state received this time is "initial", the task priority management table transmitting means 708 is activated. Then, the task priority management table transmission unit 708 sends back the task priority management table held in the own task to the request source unless the own task status 709 is “initial”. That is, in this case, since the state of the group management control main function task 10-1 is still in the “initial” state, the task priority management table is not returned, but the group management control main function tasks 10-2 and 10-3 are not returned. Since the statuses of the above are "active" and "standby", respectively, the task priority management table is returned. The contents of the task priority management table returned at this time are
This is the state shown in FIG.

Then, the "task status" field 504 of the row (third row from the top) corresponding to the transmission source apparatus of the "initial" status message (the group management control apparatus 1-1 whose failure has been recovered) is set to "standby". ", And the time TC at that time is set in the column of" state reception time "505. Next, to determine which task on which device should be the active system (whether a task having a higher priority than the currently active task is not operable), the next active task determining means 706 is activated.

On the other hand, the group management control main function task 10-
When the task priority management table receiving unit 702 receives the task priority management table sent from the group management control main function tasks 10-2 and 10-3, the state sending unit 402 in 1 receives the task in its own task. The contents of the priority management table are updated to the contents of the received task priority management table (step 802). Then, after a certain time has elapsed (step 803), the invoking task state 709 is transmitted to the multiplexed task (step 804), and this is repeated as a steady state.

Further, the group management control main function task 10-
In the next running task determining unit 706 in the status receiving unit 404 of 1 to 10-3, first, the “task status” on the “original running task existence device” having the highest priority shown in the task priority management table. And "state reception time" (step 905), whether the state is "standby" or "operating", and the difference between the state reception time and the current time is less than or equal to a predetermined time (for example, 2 seconds). It is determined (step 906). In this case, the “task status” corresponding to the group management control device 1-1, which is the “original operating task existence device”, has been updated to “standby”, and the status reception time T is equal to the current time TC. Group management control main function task 10
In -1, 10-2 and 10-3, it is determined that the group management control device 1-1, which is the original operating task, has been restored. Therefore, the group management control device 1-that has restored the operation task
In order to return to 1, the device number "1" is changed to the state change judging means 7
Pass it to 07.

As described above, the status change judging means 707 is means for deciding whether or not the status of the invoking task should be changed, and the group management control device number (new operating device) which should become the active system next. , And the device number (currently operating device) indicated in the item “currently operating task existing device” 502 in the task priority management table (step 911 in FIG. 10).
Then, since the new operating device is "1" and the current operating device is "2", the group management control devices 1-2 to 1-
It is determined that the value should be changed to 1.

Next, it is judged whether or not the "task state" corresponding to the currently operating device in the task priority management table is "in operation" (step 912). Since there is an active task in the task state, the task state is "active", so this is changed to "standby" (step 913). Then, the "task status" corresponding to the new operating device "1" is set to "active", and the new operating device "1" is displayed in the item "current operating task existence device" 502 (step 914).

Then, it is checked whether or not the new operating device corresponds to the self control device (step 915). Group management control main function task 10-1 on the group management control device 1-1
Changes its own task state 709 to "active" so that the own task becomes the active system because the own control device number "1" matches the new operating device number "1" (step 916). On the other hand, the group management control main function tasks 10-2 and 10-3 on the group management control apparatuses 1-2 and 1-3 have their own task statuses because their own control apparatus numbers do not match the new operating apparatus number “1”. Do not change 709.

Next, it is checked whether or not the currently operating device corresponds to the self control device (step 917). Then, the group management control main function task 10 on the group management control device 1-2.
-2, the self control device number "2" is the current operating device number "2"
Therefore, the invoking task state 709 is changed to "standby" so that the invoking task becomes a standby system (step 91).
8). On the other hand, in the group management control main function tasks 10-1 and 10-3 on the group management control devices 1-1 and 1-3, the self-control device number does not match the current operating device number “2”.
The task state 709 of the own task is not changed. Therefore, the group management control main function task 10-1 on the group management control device 1-1 becomes "active", and the group management control main function tasks 10-2 and 10 on the group management control devices 1-2 and 1-3 are activated. -3 becomes "standby", and the processing ends. That is, as a result of recovery from the failure of the group management control device 1-1, the task priority management table returns to the state shown in FIG. 6 (A).

Similar to the flow of processing of the group management control main function task, the group management control sub-function task S3 is restored on the group management control device 1-1 and restarts its processing. According to the task priority management table of the group management control sub-function task S3 shown in B), the group management control device in which the active system task exists is changed. That is, as shown in FIG. 6D, the group management control sub-function task S3-1 on the group management control device 1-1 returns as an active system, and the group management control on the group management control device 1-3 is performed. The sub-function task S3-2 returns to the standby system, and the group management control sub-function task S3-3 on the group management controller 1-2 remains in the standby system. On the other hand, group management control sub-function tasks S1, S2 and S
In No. 4, since the operating system (S1-1, S2-1, S4-1) does not exist on the group management control device 1-1, even if the group management control device 1-1 is restored, No movement occurs.

The task priority management table in the group management control main function task after the failure recovery of the group management control device 1-1 described above returns to the state shown in FIG.
Further, the state of each task on the group management control device returns to the state shown in FIG.

As described above, in the present embodiment, when the failed group management control device is restored, the task with the higher priority becomes the active system according to the priority listed in the task priority management table in advance. Can be restored.
Further, when the failed group management control device is restored, the operating systems of some tasks are automatically moved to the group management control device, so that the load can be distributed.

[2. Other Embodiments] In the above embodiment, one active system task and two standby system tasks have been described, but the top two of the priorities listed in the task priority management table are active systems. It is clear that it is possible to easily achieve a plurality of active tasks by setting a task with a lower priority as a standby system.

Further, in the above-mentioned embodiment, since each task is tripled and arranged in all the group management control devices, even if two group management control devices fail, all the tasks on one remaining device will be treated. An operating system is placed and processing can continue. On the other hand, when each task is duplicated, it is possible to continue processing until a failure of one group management control device by distributing each task in consideration of the priority.

Further, in the above embodiment, when the failure group management control device having a high priority is restored, load distribution is realized by switching the operating task on it, but when the processing overhead due to the switching is large. Is
It is possible to endure the subsequent failure of the group management control device only by reconnecting the priority of the group management control device recovered after the failure to the lowest. In this case, the “original operating task existence device” 50 in FIG.
The item of 1 is unnecessary.

[0082]

As described above, according to the present invention, even when the main task in the elevator group management control fails, the load is not concentrated on a specific computer and the performance deterioration of the entire system is minimized. It is possible to provide an elevator group management control system capable of performing the same.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an elevator group management control system of the present invention.

FIG. 2 is a diagram showing a software configuration of a group management control device and a single control device shown in FIG.

FIG. 3 is a diagram showing a configuration of an elevator group management control system according to the present invention and an example of distributed arrangement of various tasks.

FIG. 4 is a diagram showing a configuration example of various tasks.

FIG. 5 is a diagram showing a configuration example of a task priority management table.

FIG. 6 is a diagram showing a state of a task priority management table held by each task in a steady state.

FIG. 7 is a diagram showing a detailed configuration example of a status transmission means and a status reception means in a task.

FIG. 8 is a diagram showing a processing flow of a status transmission unit.

FIG. 9 is a diagram showing the first half of the processing flow of the status receiving means.

FIG. 10 is a diagram showing the latter half of the processing flow of the status receiving means.

FIG. 11 is a diagram showing a state of a task priority management table held by each task at the time of failure.

FIG. 12 is a diagram showing a configuration of an elevator group management control system at the time of failure and an example of distributed arrangement of various tasks.

FIG. 13 is a diagram showing a configuration of a conventional elevator group management control system and an example of distributed arrangement of various tasks.

[Explanation of symbols]

 1-1 to 1-M ... Group management control device 2-1 to 2-N ... Single control device 3 ... High speed transmission system 4 ... Low speed transmission system 5 ... Hall call button 8 ... Real-time OS 9 ... Single control function task 10 ... Group management control main function task 11 ... Group management control sub-function task 12 ... Transmission control task 401 ... Task specific processing means 402 ... Status transmission means 403 ... Task priority management table 404 ... Status reception means

Claims (6)

[Claims] 1. A plurality of elevators are commissioned for a plurality of floors, and an evaluation formula for deciding the operation of the elevators is calculated for the generated hall call based on the state information of each elevator, and thereby, In an elevator group management control system that obtains an evaluation formula for each elevator and assigns the elevator with the best evaluation value to the generated hall call as the optimal elevator, performs overall allocation control of the elevator group And a plurality of group management control devices each having a subtask group for performing allocation control of each elevator group under the control of the main task, and the main task and the subtask groups are respectively multiplexed. , At least one of them as an operating system and the other as a standby system Each of the multiplexed tasks, which are distributed and arranged, transmits at least the status of the invoking task, status receiving means for receiving the status, and task priority management indicating the priority within the multiplexed task. Means for holding the status transmitted by the status transmission means by the status reception means, and switching the operating system and the standby system in the multiplexed task according to the order defined by the task priority management means, An elevator group management control system characterized by performing allocation control of an elevator group. 2. A plurality of elevators are activated for a plurality of floors, and an evaluation formula for deciding the operation of the elevators is calculated for the generated hall call based on the state information of each elevator, and each of the elevators is operated. In an elevator group management control system that obtains an evaluation formula for each elevator and assigns the elevator with the best evaluation value to the generated hall call as the optimal elevator, performs overall allocation control of the elevator group For the main task and a plurality of group management control device having a subtask group for performing allocation control of the elevator group under the control of this main task, the main task and the subtask group are respectively multiplexed, At least one of them is an operating system, and the other is a standby system. Each of the multiplexed tasks, which are distributed and arranged, transmits at least the status of the invoking task, status receiving means for receiving the status, and task priority management indicating the priority within the multiplexed task. Means for holding the status, the status sending means receiving the status sent by the status sending means, and detecting the failure of the current active system task, the multiplexing in accordance with the order defined by the task priority management means. An elevator group management control system, characterized in that a standby system task having the highest priority among tasks is switched to an active system to perform elevator group allocation control. 3. A plurality of elevators are commissioned for a plurality of floors, and an evaluation formula for deciding the operation of the elevators is calculated for the generated hall call based on the state information of the elevators. In the elevator group management control system, which obtains the evaluation formula for each elevator and allocates the elevator with the best evaluation value to the generated hall call as the optimal elevator, performs the overall allocation control of the elevator group. For the main task and a plurality of group management control device having a subtask group for performing allocation control of the elevator group under the control of this main task, the main task and the subtask group are respectively multiplexed, At least one of them is an operating system, and the other is a standby system. Each of the multiplexed tasks, which are distributed and arranged, transmits at least the status of the invoking task, status receiving means for receiving the status, and task priority management indicating the priority within the multiplexed task. Means for holding the status transmitted by the status transmitting means by the status receiving means, based on the order defined by the task priority management means, a task having a higher priority than the current active system task When it is detected that the process has started, the current active task is set as the standby task, and the task state is switched so that the task that started the process becomes the active task,
An elevator group management control system characterized by performing allocation control of an elevator group. 4. The main task and the subtask group provided in the plurality of group management control devices are controlled by a real-time operating system, according to claim 1, 2 or 3. Elevator group management control system. 5. The elevator group management control system according to claim 1, wherein the task priority management means is a task priority management table. 6. The task priority management table indicates an area indicating a priority between devices that take over processing for each task, an area indicating a status of a corresponding device, and a time when the status of the device is received. The elevator group management control system according to claim 5, wherein the elevator group management control system has an area.