JPS61221068A - Method of controlling group of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to group management control of elevators in which a plurality of elevators are put into service for a plurality of floors, and in particular, to improve reliability when a failure occurs in the system. This invention relates to a group management control method for elevators.

[Technical background of the invention and its problems] In recent years, when multiple elevators are installed in parallel, in order to improve the operating efficiency of the elevators and the service to elevator users, it is necessary to respond to hall calls on each floor. Currently, elevators are assigned rationally and quickly using a small computer such as a microcomputer. That is, when a hall call occurs, the most suitable elevator to service the hall call is selected and assigned, and other elevators are not allowed to respond to the hall call.

Recently, in this type of group management control, models with a learning function have been introduced, and floor control based on learning data such as the measurement of car call registration data when responding to each hall call in real time and the data measurement of boarding and alighting loads has been introduced. Measures are being taken to ascertain traffic volume and the average time between arrivals at each hole.

Then, based on the measurement data, the measurement data is processed for each time period to understand the unique demand of each building, determine the optimal machine when a hall call occurs, and set the time of dispatch, lunch time, clock-out time, etc. It is directly applied to group management control such as setting distributed standby zones during off-peak hours and setting the number of idle machines to save energy.

The group management control device usually performs distributed processing of the above functions using multiple small computers such as microcomputers, and is also a single control device for controlling a single elevator that is connected to the group management control device in a master/slave relationship. The system is also composed of small computers such as microcomputers and is digitized, and high-speed information is transmitted through transmission lines such as serial transmission between computers between the group management control device and the single control device.

In this way, elevator systems that perform group management control are becoming increasingly complex, with the ratio of microcomputer-based control software increasing, and high-speed information transmission between computers, as well as digitization and distributed processing. be.

Under these circumstances, in the past, group management control was centrally managed, so even if the group management control unit goes down, even if the individual control unit that controls each individual elevator is normal, The system went down even to the backup of the multi-selective collective operating mode, in which all machines respond to a single hall call, resulting in a significant drop in elevator operating efficiency.

Therefore, it was only a heavy backup.

In order to improve this problem, there are some systems in which the group management control section is set to two types, an active system and a standby system, to configure a dual system backup, but this increases the cost and poses a problem in terms of cost performance.

On the other hand, in recent years, with the rapid development of transmission control technology, it has become relatively inexpensive and easy to exchange information between microphones and computers at high speed in real time, making distributed control of systems much easier. .

The transmission IIJl that takes there! Attempts have been made to solve the above problem by applying l technology.

[Object of the Invention] The present invention has been made in view of the above circumstances, and its purpose is to connect the functional units to be controlled individually by a transmission system, and to provide a distributed group management control function. As a result, even when the group management control section system goes down, lower group management control can be performed between single control devices via the transmission system, realizing multi-system system backup at low cost and improving system reliability. An object of the present invention is to provide a group management control method for elevators.

[Summary of the invention] That is, in order to achieve the above object, the present invention operates a plurality of elevators for a plurality of floors, performs a predetermined evaluation calculation for the hall call that occurs, and calculates the evaluation based on the evaluation calculation. In group management control of elevators, which selects and assigns the most suitable elevator, each individual control section is equipped with a small computer, each of these small computers is equipped with a group management control function, and each elevator is connected via a transmission system between elevators. In addition, each single control unit is equipped with a monitor function to monitor the normality and abnormality of the group management control unit and single control unit.When a system failure of the group management control unit is detected, the group management control unit The present invention is characterized in that the control function is transferred to a healthy single control unit, so that if the single control system is normal, the group management control will not go 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, 1 is a group management control unit, and this group management 1bllll1 unit 1 includes unit control units 2-1.1 which control each individual elevator. ~2-N via a high-speed transmission system 6 and a low-speed transmission system 7. Group management control section 1 and single control section 2-1. ~2-N are constructed of small computers made up of one or more microcomputers, and operate under the control of software.

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

The low-speed transmission system 7 mainly transmits and receives information through the hoistway, such as sending and receiving information to and from the hall call generator 3, which consists of hall buttons, hall gates, registration lamps, etc. provided in each hall, and the monitoring board 5 for monitoring. This is a transmission control system that transmits information that is sent by a group management control unit 1, a single control unit 2, and is slower than the high-speed transmission system 6 and is constructed of optical cables for long distances. -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 generating section 3 is set (lit), and the signal sent from the single control section 2-1. The optimal machine is determined based on various information of ~2-N, and a control command is given to the single control unit (2-1, ~2-N) of the determined optimal machine.

Then, the single control unit (2-1° to 2-2) receives the control command.
N) performs standalone control using the control command as hall call information.

FIG. 2 shows a single control unit 2-1. FIG. 2 is a software system configuration diagram showing an example of a software system included in 2-N. The software configuration is based on the operating system Real-time 088 for each task 9.
．． -12 are managed, and each task is started and held by the scheduler in the real-time O8.

Of these tasks, 9 are single control function tasks,
This unit control function task 9 includes the unit control unit 2-1. ~2
-N is the core function, and is a task for operating each unit, has a high priority, and is always activated at regular intervals.

10 is a group management control main function task. This group management control main function task 10 is a central function of group management control, and when the group management control unit 1 becomes abnormal,
Mainly plays a central role.

This task 10 collects information data for each machine from the group management control sub-function task, which will be described later, and which is distributed to each unit, determines the optimal machine by performing comparison calculations, and issues control commands to the relevant machine. At the same time, the hall call generating section 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 that processes information for each of the nine units of group management control, and is a function of processing information for each of the group management control main function tasks 10. The information is processed based on the information.

Reference numeral 12 denotes a monitor task for other control units, and this monitor task 12 for other control units monitors the normality/abnormality of the individual control units and group management control units of other machines. This task 12 is always activated at regular time intervals and monitors the entire system.

Next, the operation of the present invention having the above structure will be explained in FIGS. 3 and 4.
This will be explained using the diagram as an example of when the system goes down.

FIG. 3 is a functional block diagram showing the transition of the control system and the control function status due to system failure of the control system,
FIG. 4 is a flowchart showing the conditions of the scheduler that manages each of the above-mentioned tasks in the real-time O8 of each single control unit.

In the configuration shown in FIG. 3 <a>, if the group management control unit 1 is normal, each individual vIa unit 2-1. - 2-N, only the single control unit function task 9 and the monitor task 12 of other control units are activated, and the receiver has control of each single elevator. When the group management control section 1 goes down, the monitor task 12 executes the procedure shown in the flowchart of FIG. 4, and the single control section 2-1 is brought into the state shown in FIG. 3(b). ~2-Change the function of N. That is, if the group management control section 1 goes down, each individual control section 2-1. ~2-N is monitor task 12
In response to the information that the group management control unit is down, the group management control distributed function determination routine is activated, and each individual control unit 2-1
．． The division of functions for group management control is determined for every 2-N. Specifically, only one specific unit (2-1 in the figure) determined by setting priorities in advance becomes the group management control main function unit M, and the group management control unit main function tasks 10,
Both tasks of the group management control subfunction task 11 are activated. In addition, the single control unit of other machines (2-2° to 2-2° in the figure)
N) becomes a group management control subfunction section S, in which only the group management control subfunction 11 is activated and plays the role of data processing for each machine of group management control.

Next, the single control section 2 became the group management control main function section M.
-1 goes down, each remaining single control unit 2
-2. 2-N (2-2 in the figure) is transferred to a new group management control main function section M and performs the group management control function.

As a result, when the number of elevators is N, it becomes an N+1 system backup system, and even if the system goes down, the remaining healthy elevators can be managed as a group, and operation efficiency can be maintained. The use of microcomputers and data transmission allows the system to be kept inexpensive.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with appropriate modifications within the scope of the gist thereof. For example, in the above embodiments, one group management control section may be used. I took an independent system as an example, but the group management control section was not established as an independent system from the beginning.
The same applies to a system where control is performed in a distributed manner, for example, in a system as shown in Figure 3(b), where one specific unit is the group management control main function section and other units are the group management control sub function sections. It can be implemented. And in such a case,
If the number of machines is N, it will be an N-multiplex system backup system.

[Effects of the Invention] As detailed above, the present invention provides group management control for elevators in which a plurality of elevators are put into service for a plurality of service floors, and an elevator to serve a common hall call is selected and responded to. , the single control unit is provided with a function of monitoring the functions of other control units, a function of group management control, and a function of selecting the single control unit responsible for group management control, and information is exchanged via the transmission system between each machine. In addition, in the event of an abnormality in group management control, a specific one of the single control units performs the main processing, making it possible to perform group management control between single control units even when the group management control unit system goes down. Moreover, since it uses a microcomputer, it is possible to realize a multi-system backup system at low cost, and to provide a group management control method for elevators, which has the characteristics of dramatically improving reliability. can do.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a group management control elevator system according to the present invention, and FIG. 2 is a diagram showing an example of the software system configuration of a single control unit used in the elevator group management control method according to the present invention. FIG. 3 is a functional block diagram for explaining the control system transition and control function status due to a system failure of the control system according to the present invention, and FIG. 4 is a flowchart showing a part of the scheduler that manages tasks in the single control unit. It is. 1...Group management control unit, 2-1. ~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 0819...
・Single control function task, 10...Group management control main function task, 11...Group management control sub function task, 12
. . . Monitor task of other control units, M . . . Group management main control function unit, S . . . Group management sub control function unit. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] In group management control of elevators, multiple elevators are put into service for multiple floors, a predetermined evaluation calculation is performed for each hall call that occurs, and the most suitable elevator is selected and assigned to respond. A transmission system is provided to exchange information between the single control units that perform control, and each single control unit has a group management control function, a monitor control function that monitors the functions of other control units, and a group management control function. Equipped with a division determination function that determines the division of group management control functions in the event of an abnormality, and when the system of the control unit responsible for group management control goes down, one of the healthy single control units is selected and made to perform group management control. A group management control method for an elevator, characterized in that: