JPH0729743B2 - Group management control method for elevators - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an elevator group management control for activating a plurality of elevators on a plurality of floors, and particularly, to improve reliability when a system failure occurs. The present invention relates to a group management control method for elevators.

[Technical background of the invention and its problems] In recent years, when a plurality of elevators are installed in parallel, in order to improve the operation efficiency of the elevators and the service to the elevator users, response to the hall call on each floor is made. It has been practiced to assign elevators that operate in a rational and prompt manner using a small computer such as a microcomputer. That is, when a hall call is generated, an optimal elevator serving the hall call is selected and assigned, and other elevators are prevented from responding to the hall call.

In recent years, group management control of this type, which has a learning function, has appeared between floors based on learning data, such as measurement of car call registration data and data of entry / exit load when responding to each hall call in real time. The amount of traffic and the average time between arrivals at each hall are grasped.

Then, processing the measured data for each time zone based on the measured data, grasping the demand peculiar to each building, determining the optimal number of machines when a hall call occurs, setting work hours, lunch, leaving time, etc. , It is directly applied to group management control such as setting of distributed standby zone at the time of off-hours, setting of the number of suspended machines for energy saving.

The group management control device normally performs distributed processing of the above functions by small computers such as a plurality of microcomputers, and also a single control device for single elevator control connected in a master / slave relationship with the group management control device. It is composed of a small computer such as a microcomputer and is digitalized, and high-speed information is transmitted by a transmission line such as serial transmission between computers of a group management control device and a single control device.

As described above, an elevator system that performs group management control tends to be complicated, digitalized, and distributed for the entire system such as an increase in software ratio of control by a microcomputer and high-speed information transmission between computers.

In such a situation, conventionally, since the group management control is centrally managed, when the group management control unit is down, even if the unit control unit that controls each unit elevator is normal, The system went down until the backup of the multi-selective collective operation mode, which responded to all hall calls to one hall call, resulting in a significant decrease in elevator operation efficiency. Therefore, it was only a single-system backup.

Further, in order to improve this, there is a system in which a group management control unit is set to two types of an active system and a standby system to configure a dual system backup, but the cost is increased and there is a problem in cost performance.

On the other hand, in recent years, due to the rapid development of transmission control technology, it is relatively inexpensive and easy to exchange information between microphone computers at high speed in real time, and it is very easy to realize distributed control of a system. .

Therefore, attempts have been made to solve the above problems by applying such transmission control technology.

[Object of the Invention] The present invention has been made in view of the above circumstances. An object of the present invention is to connect functional units for controlling individual units by a transmission system and to distribute a group management control function. By doing so, even when the group management control system is down, lower group management control can be performed between the individual control devices via the transmission system, and multiple system backup can be realized at low cost and system reliability can be improved. An object of the present invention is to provide an elevator group management control method.

[Summary of the Invention] That is, according to the present invention, in order to achieve the above object, a plurality of elevators are activated for a plurality of floors, and a predetermined evaluation calculation is performed for a generated hall call, based on which In group management control of elevators that selects and allocates the most suitable elevator, each single control unit should have a small computer, and this small computer should also have main and sub functions of group management control, and transmission between each unit. A system that performs distributed processing through the system, and each unit control unit has a monitor function that monitors the group management control unit and the unit control unit for normality and abnormality, and detects a system down of the group management control unit. Then, the group management control function is moved to a healthy single unit control unit for distributed processing, so that if the single unit control system is normal, the group management control is performed. The feature is that it does not stem down.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a group management control system to which the present invention is applied.

In FIG. 1, reference numeral 1 denotes a group management control unit, which is a unit control unit 2-1 to 2-N for controlling each single elevator, a high speed transmission system 6 and a low speed transmission system 7. Connected through. Group management control unit 1 and unit control unit 2
-1, -2-N are composed of a small computer composed of a single microcomputer or a plurality of microcomputers, and operate under the control of software.

The high-speed transmission system 6 is a transmission control system that performs transmission between each unit control unit 2 and the group management control unit 1, that is, mainly between control computers in the machine room, and is connected by a high-speed and highly intelligent network. There is. Then, the control information necessary for the group management control is exchanged at high speed between the group management control unit 1 and the unit control units 2-1 to 2-N.

The low-speed transmission system 7 is mainly connected via a hoistway, such as exchanging information with a hall call generator 3 including a hall button, a hall gate, and a registration lamp provided in each hall, and a surveillance board 5 in a surveillance room. Is a transmission control system for transmitting the information sent by the transmission, is slower than the high-speed transmission system 6, and is composed of an optical cable or the like due to the long distance, and the group management control unit 1 and the unit control unit 2 are provided. It is connected to -1, ~ 2-N and exchanges data.

When the group management control unit 1 is normal, the hall call generation unit 3 is controlled by the group management control unit 1 via the low-speed transmission system 7, and the hall button of the hall call generation unit 3 is pressed to open the hall gate. When closed, the registration lamp of the hall call generator 3 is set (turned on), and the optimum machine is selected based on various information of the single unit control units 2-1 to 2-N sent via the high-speed transmission system 6. Then, the control command is issued to the unit control section (2-1, 2-N) of the determined optimum machine. Then, the single control unit (2-1, 2-N) that has received the control command
Performs unit control by using the control command as hall call information.

FIG. 2 is a software system configuration diagram showing an embodiment of the software system included in the unit control units 2-1 to 2-N. The software configuration is based on the real-time OS8, which is the operating system, for each task 9 to 12
Is managed, and each task is started and held by the scheduler in the real-time OS.

Of these tasks, 9 are stand-alone control function tasks,
This single control function task 9 is a single control unit 2-1 to 2-2-
It is a core function of N and is a task for operating each individual unit, and has a high priority and is always activated at regular intervals.

Reference numeral 10 denotes a group management control main function task. This group management control main function task 10 is a central function of the group management control, and is mainly a main function when the group management control unit 1 becomes abnormal. Play an important role. This task 10 collects information data for each machine from the group management control sub-function task, which will be described later, distributed to each single unit, determines the optimum machine by performing a comparison operation, and issues a control command to the corresponding machine. At the same time, the hall call generator 3 is controlled.

Reference numeral 11 denotes a group management control sub-function task, and this group management control sub-function task 11 is a function for processing information of each unit of group management control and also controls the group management control main function task 10. And process the information.

Reference numeral 12 is a monitor task of another control unit, and the monitor task 12 of this other control unit monitors normality / abnormality of the single unit control unit of another machine and the group management control unit. This task 12
Is always activated at regular intervals to monitor the entire system.

Next, the operation of the present invention having the above configuration will be described with reference to FIGS.
An example when the system is down will be described with reference to the drawings.

FIG. 3 is a functional block diagram showing control system transition and control function status due to system down of the control system,
FIG. 4 is a flow chart showing the conditions of the scheduler that manages each of the above tasks in the real-time OS 8 of each individual control unit.

In the configuration shown in FIG. 3 (a), when the group management control unit 1 is normal, the individual control units 2-1 to 2-N each have a single control unit function task 9 and a monitor task of another control unit. Only 12 are activated and take control of each single elevator. If the group management control unit 1 goes down here, the monitor task 12
The procedure shown in the flowchart of the figure is executed, and FIG.
The functions of the unit control units 2-1 to 2-N are changed to the state shown in. That is, when the group management control unit 1 goes down, the individual unit control units 2-1 to 2-N receive the information about the group management control unit down by the monitor task 12, and the group management control distributed function determination routine is activated. The function allotment of group management control is determined for each unit control unit 2-1 to 2-N. Specifically, for example, only one specific unit (2-1 in the figure) determined by previously setting the priority order becomes the group management control main function unit M,
Both the group management control unit main function task 10 and the group management control sub-function task 11 are activated. In addition, the unit control units of other units (2-2, 2-N in the figure) become the group management control sub-function unit S, and only the group management control sub-function 11 is activated, and each unit of group management control is activated. Plays another data processing role.

Next, the unit control unit 2 which became the group management control main function unit M
-1 when the system goes down, the remaining individual control units 2
A specific one (-2-2 in the figure) of -2, to 2-N is transferred to a new group management control main function unit M to fulfill the group management control function.

As a result, when the number of units is N, a system backup system of N + 1 system is created, and even if the system goes down, the remaining healthy elevators can be group-managed and the operating efficiency can be maintained. And by making full use of data transmission, the system can be kept cheap.

The present invention is not limited to the embodiments described above and shown in the drawings, and can be appropriately modified and carried out within the scope of not changing the gist thereof. For example, in the above embodiments, one group management control unit is provided. I took an independent system as an example, but I did not make the group management control unit independent from the beginning as a system,
The same applies to a distributed control system, for example, a system in which one specific unit serves as the group management control main function unit and the other units serve as the group management control sub-function unit, as shown in FIG. 3 (b). It can be carried out. And in this case,
If the number of units is N, the system will be an N-tier system backup system.

[Effects of the Invention] As described in detail above, the present invention provides a group management control of elevators that activates a plurality of elevators for a plurality of service floors and selects and responds to an elevator that services a common hall call. , The unit control unit is provided with the function monitoring function of other control units, the group management control function (main and sub functions), and the selection function of the unit control unit responsible for group management control, and via the transmission system between each unit. When exchanging information and abnormal group management control,
Group management control between single control units even when the group management control system is down by using a distributed processing system in which one healthy specific unit performs main processing and all healthy single control units perform sub processing Group management of elevators, which has the characteristics that it is possible to perform the above-mentioned operation, and because a microcomputer is used, a multiple-system backup system can be realized at low cost and the reliability can be dramatically improved. A control method can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a group management control elevator system according to the present invention, and FIG. 2 is a diagram showing an example of a software system configuration of a single control unit used in an elevator group management control method according to the present invention, FIG. 3 is a functional block diagram for explaining transition of control system and control function state due to system down of the control system according to the present invention;
The figure is a flowchart showing a part of a scheduler for managing tasks in the unit controller. 1 ... Group management control unit, 2-1 to 2-N ... Single control unit,
3 ... Hall call generation unit, 4 ... Hall call transmission control unit, 5 ... Monitoring panel, 6 ... High-speed transmission system, 7 ... Low-speed transmission system, 8 ... Real-time OS, 9 ... Single control function task , 10 …… Group management control main function task, 11 …… Group management control sub-function task, 12 …… Monitor task of other control section, M …… Group management main control function section, S …… Group management sub control function Department.

Claims (1)

[Claims] 1. A group management control of elevators in which a plurality of elevators are activated for a plurality of service floors, a predetermined evaluation calculation is performed for a generated hall call, and an optimal elevator is selected and assigned to respond. , A group management control sub-system for exchanging information by providing a transmission system for exchanging information between unit control units for controlling each elevator unit and for performing information processing of its own machine for group management control in each unit unit. Group management control main function that determines the optimum machine based on the information for each machine obtained by the functions and group management control sub-functions, monitor control function that monitors the functions of other control units, and group management control In the event of an abnormality in the group management control function, a function for determining the allocation of the group management control function is provided. A group management control method for an elevator, characterized in that the group management control main function is executed by each of the individual control units, and the group management control sub-function is executed by each single control unit.