JPS6279174A - Group controller for 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 a group management control device that performs group management control by operating a plurality of elevators for a plurality of floors. This invention relates to an elevator group management control device that decentralizes the processing of some of its functions.

[Technical background of the invention and its problems] In recent years, when multiple elevators are installed in parallel on multiple floors, in order to improve the operating efficiency of the elevators and the service to elevator users, A small computer such as a microcomputer is used to rationally and quickly allocate an elevator that responds to a hall call on a floor. In other words, when a hall call occurs, the system selects and assigns the most suitable elevator to service the hall call, and
Other elevators are prevented from responding to the hall call.

Recently, in such group management control systems, systems with a learning function have been developed. For example, in real time, we measure the car call registration data when responding to each hall call, and also measure the loading and unloading load data, and use these learning data to understand the traffic between floors and calculate the average time between arrivals at each hall. Understanding is being carried out.

Then, based on the measured learning data, by processing the measured data for each time period and understanding the unique demand of each building, flk J @
It is possible to directly control the group management by determining the timing of dispatch, setting the time for dispatch, lunch time, clocking out, etc., setting distributed standby zones during off-peak hours, and setting the number of idle machines to save energy. It is applied in many ways.

The group management control device that performs this main control normally performs the above-mentioned filtering function in a distributed manner using multiple small computers such as microcomputers, and is connected to the group management control device in a master/slave relationship. The single control unit for single elevator control is also constructed of small computers such as microcomputers and is digitized, and high-speed information exchange is possible between the group management control unit and the single control unit using transmission lines such as serial transmission. I am doing it.

In this way, in elevator systems that perform group management control, the proportion of software has increased to implement the above-mentioned learning function, and the entire system has become ML and digital, including high-speed information transmission between computers. There is a tendency to

Under these circumstances, conventionally, the group management control system is a centralized control system, that is, the group management functions are carried out by one group management control system, and basic data is transmitted between each individual control system. Based on the basic data of the group management control I table device, data processing was performed for each machine.

Therefore, as the size of the group control elevator system increases, that is, the number of floors and elevators, the load on the computer of the group control control device increases, and as the demand for hall calls increases, the processing capacity is affected. For example, in systems that display reservations, the processing time from the generation of a hall call to the lighting of the reservation light of the optimal car varies depending on the number of floors and the number of elevators installed in parallel.
The load on the computer of the group management control device is large, which tends to worsen the load balance among the computers in the entire system.

Due to the above-mentioned demands, progress has been made toward decentralized control of group management control functions with the aim of reducing the load on the computers of the group management control device and equalizing the load balance of the control computers.

However, group management control 11! When a control command is given to a sub-function control device from the main function control device of a function, and the sub-function control device is in operation due to another task, the group management control l1 If there is a delay in giving task exclusive rights to a functional task, or if a single error occurs in the transmission system due to some reason in the command, group management control may be interrupted due to a malfunction in one single control device. The equipment may be overly affected, and the entire group management control system will be affected.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide group management control for elevators that equalizes computer load sharing and improves the efficiency of the overall system. The goal is to provide equipment.

[Summary of the Invention] In order to achieve the above object, the present invention has a transmission line for controlling a single elevator by a single control unit, and for converting information between these single control units, and for controlling a single elevator by a group management control means. A predetermined evaluation calculation related to the waiting time required for a response in each elevator for a hall call that occurs is performed, the optimal elevator is selected, and the response is assigned to the single control unit corresponding to that elevator, and each single control unit is Embodiment of the Invention An embodiment of the invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the group management control device of this embodiment.

In FIG. 1, a group management control section 1 includes a unit control unit 2 (2-1 to 2-N) that controls each unit, and a high-speed transmission line 6.
, are connected via a low-speed transmission line 7. The group management control section 1 and the single control section 2 are constituted by a small computer such as one or more microcomputers, and operate under the control of software.

The high-speed transmission section 6 is a transmission control path that performs transmission between each individual control section 2 and the group management control section 1, that is, mainly between the control computers in the Akebono machine room, and is connected by a high-speed and highly intelligent network. ing.

Then, the control information necessary for group management control is transmitted to the group management control unit 1.
Data is exchanged at high speed between the controller and the single controller 2.

The low-speed transmission line 7 is a transmission control line that mainly transmits information sent via the hoistway, such as the hall call 3 of each hall and the monitoring panel 5 of the monitoring room, and has a lower transmission rate than the high-speed transmission line 6. The speed is low and the distance is long, so it is constructed using an optical cable or the like, and the group management control section 1 and the single control section 2 are connected to exchange data.

When the group management control unit 1 is normal, the hall call 3' is controlled by the group management control unit 1 via the low-speed transmission line 7, and when the hall call gate is pressed, the registration lamp is set and the high-speed The optimum machine is determined based on the information from the unit control unit 2 sent via the transmission path 6, and a control command is issued to the unit control unit 2. The unit control unit 2 that receives the control command performs unit control using the control command as hall call information.

FIG. 2 is a software system configuration showing an embodiment of the software system of the single control unit 2 according to the present invention. In the software configuration, each task 9 to 12 is managed by a real-time operating system 088, and each task is activated or held by a scheduler within the real-time 08.

The critical body control function task 9 is a function that causes coughing in the single control unit, is a task for operating each single control unit, and has a high task priority.

The group management control main function task 10 is the central function of the group management control unit, and it collects information data for each machine from the group management control sub function tasks distributed in each individual control unit, and performs comparative calculations. , the optimum number is determined, a control command is given to the corresponding number machine, and hall call 3 is controlled.

The group management control sub-function task 11 is a function of processing information for each machine of the group management control section, and processes the information under the control of the group management control main function task 10.

In other words, the configuration is such that a computer with the main function of group management control manages the startup and termination of tasks via the high-speed transmission line 6, and distributed processing is performed on a unit-by-machine basis based on commands from the main functional layer, which is a mask. The configuration is such that the data is sent back to the main functional layer upon completion of the above processing.

The transmission control task 12 controls the above-mentioned data exchange on the high-speed transmission line 6 and the activation and termination of the group management control subfunction task 11.

FIG. 3 is a block diagram showing an example of the system configuration of the high-speed transmission line 6 of FIG. 1. For example, transmission control is 180
The data link controller 14 and media access controller 15 are configured to be highly intelligent as parts that control the data link layer of the LAN network model layer proposed by the International Organization for Standardization (International Organization for Standardization). The configuration is such that the ratio of transmission control software managed by the system is reduced. For example, as a data link controller that realizes the above-mentioned highly intelligent transmission control, Intel's integrated circuit device i82 is used.
586 and the 182501 have already become commonplace as media access controllers, making it possible to perform high-speed transmission functions such as 10 Mbit/s relatively easily with a reduced microprocessor-to-bust ratio. There is a tendency.

Next, control operations between the computers will be explained based on FIGS. 4 to 6.

FIG. 4 is a flowchart showing an example of the operation of the group management control unit 1 having a group management main function task, taking as an example the case when a hall call occurs, and FIG. FIG. 3 is a diagram illustrating an implementation format of a transmission data text for controlling activation and termination of a task.

FIG. 6 is an example of a block diagram showing the operation of inter-task communication between each control unit to realize the above-mentioned distributed processing.

We will proceed in detail by taking as an example each control unit and transmission control system when a hall call occurs.

When a hall call occurs, information on the occurrence of the hall call is inputted via the low-speed transmission system 7 to the group management control section 9 which is responsible for group management main function tasks.

In FIG. 4, the group management main function task of the group management control station sends information on the generated hall call and activation information of the group management sub-task to each single control station. A task activation request is made (processing Sl).

The task start request transmission for the group management subfunction described above is in the transmission data text format (1) shown in Figure 5(a).
DS in FIG. 5 indicates the station number corresponding to each single control unit, and K is the text identification number. Specifically, in the above case, the DS corresponds to the task activation request information. .

FNC is a task number and is information on which task is specifically activated in response to the above task activation request. In the above case, it indicates the code of one of the group management subfunction tasks. . The reason why it is expressed as one code here is because it is assumed that the group management sub-function task has multiple processing functions for each function. Specifically, this corresponds to the calculation of evaluation values.

D1 to DN are message data to be passed to the task requested to be activated, and the task requested to be activated processes the task using this message data as input information.In this embodiment, information on the hall call floor where the occurrence occurs corresponds.

The main function task of the group management control unit that has sent the task activation request enters a waiting state for receiving response data from each substation in response to the group management subfunction task activation request from each individual control unit (process 82), and also waits for response data to be received from each substation in response to the group management subfunction task activation request from each individual control unit. The data return monitor timer is started, and the exclusive right of the task is once released to the scheduler of the real-time O8, and the exclusive right of the CPU is handed over to other processing. This is because, as shown in FIG. 6, it takes time from sending task activation request data to the single controller to receiving response data from the station of the single controller that requested it.
The main function task restarts the waiting process by returning response data from each individual control unit of all machines or by timeout due to a timer (processing 8).
3).

As shown in FIG. 6, the single control section that receives the subtask activation request by the main function task of the group management control section receives the transmission data text format (1) shown in FIG. 5(a), and processes the command. When the activation of the task of its own station is recognized by the text identification number K to be decoded, the activation of the task of the corresponding task number FNC is determined.

At that time, in this embodiment, the message data is delivered to the task corresponding to the task number.
The corresponding task number is a task for calculating the evaluation value when a hall call occurs, and the floor where the hall call occurs is delivered as message data. Then, it detects the status of tasks waiting to be started on the current computer, checks the load status of the computer, checks the communication wait request of the transmission control unit, the communication boat status, and the send/receive buffer status, and checks the status of the tasks waiting to be started on the current computer. It determines whether or not there is a response to the activation request, and transmits response data, which is data indicating whether or not the response is possible, to the main function station. The response data text format of FIG. 5(C) corresponds to the above response data.

In the group management control section that was restarted due to response data returned from the above-mentioned machine or due to a timeout due to a timer, the group management control section judges the response data from each machine, and the single control section that has not returned normal response data The reception is based on the information of the corresponding machine that has been input to the group management control unit so far for the machine that is in the operating (busy) state or a timeout state due to no task activation request being detected from the group management control unit. After activating the group management sub-function task (step S4), the group management control unit processes the corresponding individual control unit that is not responding normally.

Then, it enters a state of waiting for data reception from each individual control unit to which a normal response has been made (process 85), and starts a received data return monitor timer.

In the sub-function station of the single control unit that sent the normal response data, when the exclusive right of the CPU is given to the group management sub-function task, the message data is input and evaluation calculation is performed, and the main function of group management of the group management control unit is executed. The transmission data text format (2 is the data sent between each station from each individual control unit to the group management control unit, which is used to send data back to the task) in FIG. 5(b). When receiving data, the transmission control unit detects from the text identification number K that it is the request data for the data requested to activate the unit control unit station, and receives the data. The unit monitors the return transmissions and receptions from the single control unit station, suspends the group management control unit when there are returns from all stations, or times out due to a timer, and restarts the group management main function task that was in the standby state. (processing S6).

The group management main function task checks the status of the data returned from the sub-function station that has returned normal response data.
When a timeout occurs and there is no returned data, the group management control unit activates a sub-function task for that machine in the same way as for the machine in the response data return timeout state described above (step S7). Perform evaluation calculations.

Then, a comparison process is performed based on the data of the machine that has undergone the calculation process by the machine that obtained the message data received from each unit and the group management control unit (process 88). In the hall call generation of this embodiment, received data D1 to
DN is an evaluation value for each floor where a hall call occurs, and based on that value, the optimal machine number for the hall call floor is determined (step S9), and an assignment command is sent to this high-speed transmission system to determine the hall call generation floor. Complete the process.

In the above example, we specifically described the process when a hall call occurs, but basically, when the station that performs the main group management control function performs the process by starting a task, the station of each individual control unit On the other hand, Fig. 5 (
Set the data that matches the transmission data text format (1) of ``a'', and each unit control unit sends a response to the task with the corresponding task number based on the transmission data text using the message data as input information. It makes a judgment and returns the response data, and if the response is normal, it is activated, and when the processing is completed, it returns the data to the main function station of the group management control section, and all stations that responded normally In addition to receiving data returned from the station, distributed control processing is not performed for machines that have timed out or cannot respond normally, and data processing is performed at the main function station, and based on this data. Performs overall processing.

As described above, in this embodiment, communication between tasks at each station is performed via the transmission path, and the status of each station is detected by the monitor function, and for stations where inter-task communication is temporarily unavailable, the distributed This enables highly reliable distributed control processing that performs backup using the main function without performing control.

In this embodiment, the distributed processing control for the occurrence of a hall call has been explained as a specific example, but as described above, the same can be applied to tasks that perform other processing. In addition, in this embodiment, one independent system was explained as an example of the group management control unit, but one station in each unit has the function of the main functional task of the group management control unit, and its own A distributed processing function can be similarly realized in a system that starts sub-function tasks and other single control unit stations.

[Effects of the Invention] As detailed above, according to the present invention, single control units are provided, these single control units are connected by a transmission path, and a group management control auxiliary function for monitoring each single control unit is provided. A group management control unit is provided, and with this group management control unit as a mask, processing for each machine is performed by a single control unit, and by distributing the group management function, it is possible to equalize the computer load sharing and improve the overall system. In addition, the main function of the group management control unit can monitor each individual control unit, and in the case of a single transmission error or a busy state, the main function can By performing the processing for the corresponding car, it is possible to provide an elevator group management control device that realizes a highly reliable distributed control processing system.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an elevator group management control device according to the present invention, FIG. 2 is a software system configuration diagram of a single control unit of the elevator group management control method according to the same embodiment, FIG. 3 is a block diagram showing the hardware system configuration of the high-speed transmission line according to the same embodiment, FIG. 4 is a flowchart showing the operation of the main function task when a hall call occurs according to the same embodiment, and FIG. 5 is according to the same embodiment. A diagram showing the transmission data text format and response data text format of the transmission system that controls the startup and termination of tasks between each station. FIG. 2 is a block diagram showing the operation of distributed processing. 1...Group management control unit, 2-1 to N...Single control unit 1
~N, 3...Hall call, 4...Hall call transmission control unit, 5...Monitoring panel, 6...High speed transmission line, 7...
Low-speed transmission line, 8... Real-time O8, 9... Single control function task, 1o... Group management control main function task, 11... Group management control sub-function task, 12...
Transmission control task, 13...Microprocessor, 14
...Data link controller, 15...Media access controller, 16...System bus, 17
...Control line, 18...Serial transmission line, 19.
...Destination station address, 20...Text identification number, 21...Task number, 22...Memory address, 23...Message data. Applicant's agent Patent attorney Takehiko Suzue Figure 3 Figure 4 Sending page 7' - person's car mat (1) Sending page - Vertical entry format 7' (2) P, $ page - Vertical suit former, 2 Figure 5

Claims (2)

[Claims] (1) An elevator that operates multiple elevators for multiple floors, performs a predetermined evaluation calculation related to the waiting time required to respond to a hall call that occurs, and selects and assigns the optimal elevator to respond. In the group management control system of Group management performs related predetermined evaluation calculations, selects the most suitable elevator, assigns it to the single control unit corresponding to that elevator, causes it to respond, monitors the operating status of each single control unit, and controls the distributed processing of the group management control function. What is claimed is: 1. A group management control device for an elevator, comprising a control means, and performing distributed processing of group management control. (2) The group management control device for an elevator according to claim 1, wherein the group management control unit controls the distributed processing of the group management control function according to the computer load state of each individual control unit. .