JPH0662263B2 - Signal transmission control method for group management elevator - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a single control unit provided in each of a plurality of elevators and having a group management control sub-function task to control a corresponding elevator, and a single control of these units. The present invention relates to a signal transmission control method of a group management elevator including a group management control unit having a group management control main function task for managing a unit.

[Technical background of the invention and its problems]

In recent years, when a plurality of elevators are installed side by side, in order to improve the operation efficiency of elevators and the service to elevator users, an elevator that responds to hall calls on each floor is equipped with a small computer such as a microcomputer. It is used to make a rational and prompt allocation. 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.

Among the group management controls of this type, those with a learning function have recently appeared, and floor-level traffic based on learning data such as car call registration data measurement and loading / unloading load data measurement when responding to each hall call in real time. The amount is grasped and the average arrival time at each hall is grasped.

Then, the measured data is processed for each time zone based on the measured data to grasp the demand unique to each building, to determine the optimum number of units when a hall call occurs, each time zone when commuting to work, having lunch, and leaving work. It is directly applied to the group management control such as setting of etc., setting of the distributed standby zone at the time of a quiet time, setting of the stand for energy saving, etc.

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

In this way, the signal transmission control system of the group management elevator has become extremely advanced in recent years, and with the advent of controllers that realize highly intelligent transmission control, it becomes possible to support the transmission packet buffering function, etc., and the main CPU Since the transmission control management of processing is reduced and the load on the main CPU is reduced, there is a tendency that a highly intelligent inter-task communication function among the stations is mainly performed, and thus the distributed processing of the control functions by the stations is performed.

Under such circumstances, the conventional control system for group management of a plurality of elevators is a central control system, and only the basic data is transmitted between the group management control device and each single control device. Based on the basic data, the group management control device performed data processing for each machine.

Therefore, if the scale of the group management elevator system, that is, the number of floors and the number of elevators increases, the load on the computer of the group management control device increases, and if the demand for hall calls increases, the processing capacity will be affected. In systems with indications, the processing time from hall call generation to lighting of the reservation lamp of the optimal number changes depending on the number of floors and the number of elevators, and the system load on the computer of the group management control device becomes excessive. As a whole, it tends to worsen the load balance of the computer.

Therefore, for the purpose of reducing the load on the group management control computer and balancing the load on the single control computer, the distributed processing of the control functions of the elevator system having multiple stations has begun to proceed.

In this type of transmission control method, since the data transmission request queue from each task is managed in a single manner, if the conventional transmission function as described above, that is, transmission control of basic data between control devices, is used, Transmission / reception management is possible with a single management. However, when trying to perform highly intelligent inter-task communication through a common physical transmission line, a single management of the transmission / reception queue is in demand for highly intelligent transmission, and the target station When waiting to send data from
Even if the transmission line or the buffering of the transmission control controller management is empty, the transmission request by the next task cannot be made, and even if you have a transmission system with an advanced transmission control controller, the transmission communication efficiency decreases and the transmission system Cannot be used effectively, the effect of distributed control processing due to highly intelligent inter-task communication is lost, and when performing parallel operation of tasks, the execution efficiency of each task decreases, and in fact If this is not possible, the performance of the entire computer of each control device will deteriorate.

[Object of the Invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a signal of a group management elevator that can skillfully solve the problem of communication waiting that occurs when distributed processing of group management control is performed. It is to provide a transmission control method.

[Outline of Invention]

In order to achieve the above-mentioned object, the present invention provides a single control unit that is provided in each of a plurality of elevators and has a group management control sub-function task to control a corresponding elevator, and a group that manages these single control units. A method for controlling signal transmission of a group management elevator, comprising: a group management control unit having a main function task for management control; and a physical transmission line connecting the control units to each other to form a high-speed transmission system. In addition, the port numbers for transmission and reception for communicating between tasks with other control units are set for each transmission / reception processing unit in the task, and the management table is set for each port number to set the transmission / reception request. The group management control main function task communicates the transmission information with the own station port number and the partner station port number to the group management control sub-function task via the physical transmission line to manage the group. The control sub-function task executes the group management control sub-function task based on the transmission information received from the group management control main function task, and then returns the execution result as reply information to the group management control main function task. The group management control of the group management control unit is performed by adding the port number of the partner station and the port number of the partner station to the send information by assigning it as the own port number of the reply side and the port number of the partner station, and sending it to the group management control main function task. It is characterized in that inter-task communication is performed between the main function task and the group management control sub-function task of the single control unit.

Example of Invention

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

In FIG. 1, the group management control unit 1 is physically connected to unit control units 2-1 to 2-M that control each elevator unit, via a high-speed transmission system 6 and a low-speed transmission system 7. The group management control unit and the single unit control unit are configured by a small computer such as a single 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 signal transmission between the individual unit control units 2-1 to 2-M and the group management control unit 1, that is, mainly between the control computers in the machine room, and is high-speed and highly intelligent. Connected by various networks. Then, the control information required for group management control is multiplexed between a group management control unit and a single unit control unit by a plurality of logical transmission lines, which will be described later, virtually forming a single physical transmission line, Data is transmitted and received at high speed through each logical transmission path. The low-speed transmission system 7 is a hall call unit 3-1 or 3-2 on each floor.
3-M, the monitoring board 5 in the monitoring room, and the like, which is a transmission control system that mainly transmits information sent through the hoistway, and has a lower transmission speed than the high-speed transmission system 6. The low-speed transmission system 7 is generally composed of an optical cable or the like for a long distance, and exchanges data with the group management control unit 1 and the unit control units 2-1 to 2-M. Hall call unit 3-1
The transmission control units 4-1 to 4 are provided between the 3-M and the low-speed transmission system 7.
-M is inserted.

If the group management control unit 1 is normal, the hall call unit 3
The hall call is transmitted to the group management control unit 1 via the low-speed transmission system 7 for control, and when the hall call is registered, the registration lamp is set and the hall call is sent via the high-speed transmission system 6. The optimum machine is determined based on the information from the unit control unit, and the control command is issued to that unit.
Then, the unit control unit that receives the control command performs unit control using the control command as hall call information.

2A and 2B are system configuration diagrams showing an embodiment of the software system of the group management control unit and the single unit control unit according to the present invention, respectively.

In the group management control unit of FIG. 2A, the group management control main function task 1 is executed by the real-time operating system (hereinafter, operating system is referred to as OS) 8.
0A, the periodic transmission / reception control task 40A, and the transmission control task 12A are managed, and each task is activated and held by the scheduler in the real-time OS 8. Here, the task means a control unit that collectively manages the flow from program activation and its execution to termination. Under the control of the OS, the program is treated as a task, and the program is handled as a unit. Is executed and controlled.

The group management control main function task 10A controls the central function of the group management control unit, collects information data for each machine from the group management control sub-function task distributed to each single unit,
Determines the optimum machine to respond to the hall call by logically operating based on the evaluation value that is required for each hall call and transmitted from each unit control unit, and issues a control command to the corresponding machine . The transmission control task 12A controls transmission / reception of high-speed transmission system data and activation / termination of group management control sub-function tasks, manages a plurality of multiplexed logical transmission paths, and transmits / receives a transmission queue / port for each port. Controls the receive queue.

In the unit controller of FIG. 2B, the unit control function task 9, the group management control sub-function task 11, the periodic transmission / reception control task 40, and the transmission control task 12 are managed by the real-time OS 8, and each task is real-time. It is activated and held by the scheduler in the OS 8. The unit control function task 9 is a task for operating each unit elevator as a core function in the unit control unit, and the task priority order is set high. The main function of the group management control sub-function task 11 is to calculate the evaluation value of the own machine for the hall call and send the calculation result to the group management control main function task 10A. Here, the evaluation value for the hall call is calculated based on the estimated arrival time when the own machine responds to the hall call, the passenger load capacity (passenger number) at the time when the hall call is made, and the like.

The group management control sub-function task 11 administers a function of processing information for each unit of the group management control unit, and processes information under the control of the group management control main function task 10A. That is, each individual control unit is configured to perform task activation and termination management via the high-speed transmission system 6 by a computer having a group management control main function, and from the main function station as a master to each unit station. Specify the virtual access point number of the own station / remote station, and perform the distributed processing on a machine-by-machine basis in response to a transmission request command via each local station port number. It is configured to send data back in.

As shown in the relationship between the group management control main function task and the group management control sub-function task, synchronous control of data input / output, activation, and termination among multiple tasks is called inter-task communication. Realizes this function on the OS. According to the present invention, the group management control unit, which is a computer having the group management control main function, and the group management control sub-function tasks of the individual control units carry out inter-task communication via the port number by the transmission line 6. . The transmission control task 12 controls the transmission and reception of data in the high-speed transmission system and the activation and termination of the group management sub-function task 11 described above, manages a plurality of multiplexed logical transmission paths, and sends them to each port. / Controls the receive queue.

The periodic transmission control task included in the periodic transmission / reception control task 40 is an elevator that periodically transmits information from the individual unit control units 2-1 to 2-M to the group management control unit 1. The group management control main function task and the group Management control sub-function A transmission request command is issued via a port number different from the local / remote station port number used by the task, and transmission is completed when the transmission is completed. It is cyclic at predetermined time intervals. Send information to. The transmitted data is received by the regular reception control task of the group management control unit 1.
The regular reception control task included in the regular transmission / reception control task 40 is a task for receiving information periodically transmitted from the group management control unit 1 to the individual unit control units 2-1 to 2-M.
It is received via a port number different from the own / remote station port number used by the group management control main function task and group management control sub-function task, and it is judged as simple reception by message decoding, and the received data is The process is completed by transferring to a predetermined area. This received data is the reception processing of the data transmitted by the regular transmission control task of the group management control unit 1.

In the tasks of periodical transmission and periodical reception, since there is no reply, transmission from the primary station to the secondary station or transmission from the secondary station to the primary station constitutes one event each. On the other hand, in transmission / reception between the group management control main function task and the group management control sub-function task according to the present invention,
After transmitting from the next station to the secondary station and performing a predetermined process there, the transmission process from the secondary station to the primary station is further performed to
Configure an event. For periodic transmission and regular reception, different port numbers are assigned to the group management control main function task and the group management control sub-function task.

FIG. 3 is a block diagram showing an embodiment of the system configuration of the high speed transmission system 6 of FIG. Transmission control is performed by, for example, I
The data link controller 14 and the media access controller 15 are provided as a part that controls the data link layer of the LAN (local area network) model layer advocated by SO (International Organization for Standardization) so that the data link controller 14 and the media access controller 15 are configured to be highly intelligent. A configuration is adopted in which the ratio of transmission control software managed by the microprocessor 13 such as buffering management of transmission packets is reduced. As a controller that realizes highly intelligent transmission control, for example, the data link controller 14 is an i82586 of Intel, and the media access controller 15 is an i82 of the same.
501 or the like can be used. These controllers easily realize a high-speed transmission function of about 10 Mbit / sec while reducing the support ratio of the microprocessor. The microprocessor 13 and the data link controller 14 and the two controllers 14 and 15 are connected via a control line 17, respectively, and the microprocessor 13 and the two controllers 14 and 1 are connected.
5 are connected to each other via a system bus 16, and access control is performed to an external serial transmission system 18 via a media access controller 15.

Next, FIG. 4 is a block diagram showing an embodiment of the system configuration of the logical transmission line of the high-speed transmission system 6 in FIG.
The figure is a system diagram showing an example of a logical connection configuration for inter-port transmission in FIG.

FIG. 6 is a block diagram showing an example of control operation when the transmission control system of FIGS. 4 and 5 is applied to a group management control main function task and a group management control sub-function task, and FIG. FIG. 8 is a flow chart showing an example of a specific operation of the primary station function and the secondary station function operation in the inter-task communication of each user task. Further, FIG. 9 shows an embodiment of a management table according to the present invention managed by the transmission control software, and has a table structure in which management is separated for each port number of a logical transmission path.

FIG. 4 is a block diagram showing an embodiment of the system configuration of the logical transmission line of the high-speed transmission system 6 in FIG. 1, and the data control of the common physical transmission line 60 is performed by the media access controller of FIG. 15, the data link controller 14 controls the transmission control interface for the data link layer, that is, the data transmission / reception between the stations, and the microprocessor 13 controls the layers above the data link layer. N logical transmission lines are set on the common physical transmission line 60, and the processing units of the tasks in each station #i, #j, that is, the intra-task processing units 1i to Ni, 1j to N.
j is the port 1i set to each logical transmission path.
Communication with processing units in other tasks is performed via Ni, 1j to Nj.

In the figure, for convenience, one port and one in-task processing unit are shown for one task, but in reality, a plurality of in-task processing units may be included in one task. . That is, in the single unit control unit, since the other party of the transmission / reception process is only the group management control unit, the number of transmission / reception processing units in the task is one. Therefore, although the transmission / reception processing unit in the elevator matches, the group management control unit However, since it is necessary to manage each unit, the task does not match the transmission / reception processing unit in the task, and the task includes transmission / reception processing units for M units. 1 like this
When a plurality of intra-task transmission / reception processing units are included in one task, one port is set for each intra-task transmission / reception processing unit. Thus, each station can process a plurality of tasks including the number of ports, that is, N in-task processing units in parallel, and the operations of the send / receive queues of the processing units in each task are independently transmitted. It is managed by the transmission control management table shown in FIG. 9 by the control task.

In the group management system shown in FIG. 1, the group management control main function task of the group management control unit 1 and the individual unit control units 2-1 to 2-
FIG. 6 shows a transmission / reception operation with the group management control sub-function task of M.

The group management control main function tasks of the group management control unit 1 are 1 to M
A port number is opened for each machine up to the machine, and a transmission queue requested to be transmitted through each port number by the local processing which is a primary station function is formed for each port number according to the transmission control management table. On the other hand, in the single control unit i which is the secondary station, reception is performed through the port having the same number as the port number i transmitted from the primary station, and the reception queue requested to be received is the transmission control management table. To perform remote processing of group management control subfunction tasks.

After executing the application processing according to the received data, the transmission request is made by the local processing of the group management control sub-function task using the same port number i, and the transmission queue i is managed according to the transmission control management table for each port number. , Is transmitted to the group management control unit 1 via a common physical transmission line by the output queue. In the group management control unit 1, after being queued in the reception queue corresponding to the port number i, the data is disguised as remote processing of the group management control main function task No. i.

Here, an example of the operation of the inter-task communication will be specifically described with reference to FIGS. 7 and 8.

FIG. 10 shows an example of the structure of unit transmission data in the signal transmission according to the present invention. In this case, the transmission data consists of the partner station port number D1, the own station port number D2, the message code D3 and the application data D4. ing.

In the primary station functional task that makes a transmission request, a port that makes a transmission request to the transmission control system is opened. The port number S port in the local station and the D port which is an input port for the remote station are designated (step 7a). The primary station processing of the station 19a in FIG. 5 corresponds to the operation of FIG. 7, the local station port number corresponds to the transmitting port 20a, and the partner station port number is the receiving port 21b.
Corresponding to. After designating the local station port number S port and the remote station port number D port, a transmission request is sent to the local station transmission port 20a for the transmission control task (step 7).
b). When a transmission request is made, the transmission control task is placed under the control of the management table of the corresponding local port number on the management table in FIG. 9, and the transmission queue of the corresponding local port number in FIG. Is queuing in. Then, a transmission packet is formed from the transmission queue through the transmission output process, is queued to the output queue, and is placed under the control of the transmission control controller. This causes the primary station processing task to wait for the completion status from the transmission control task (step 7c), this task is suspended, and control is returned to the OS scheduler.
If there is another task that you want to send request, CPU
The exclusive right of is transferred. When the transmission control controller transmits the data on a common physical transmission line and the transmission control task sets the completion status, this task is restarted again, and after the status check (step 7d), the return data from the partner station is received. A waiting state is entered (step 7e). When the transmission packet is output on the common physical transmission line, the receiving operation is performed in the partner station (step 7f).

FIG. 8 shows the secondary station processing corresponding to the primary station processing of FIG. 7, and corresponds to the secondary station processing of the station 19b in FIG. Receiving port 21b which is the receiving port corresponding to the designated station number D port of the partner station
A logical transmission line is connected at. The transmitted packet is received via a common physical transmission line and queued in the input queue as shown in FIG. 6 (step 8a). Then, the port number of its own station / partner station is read through the reception input processing by the transmission control task, is queued in the reception queue of the value of D port which is the corresponding port number, and is connected to the secondary station processing (step 8b). ).
In the secondary station processing, after decoding the message data and performing the applied processing (step 8c), the D port, which is the port number of the partner station at the time of data input, is the own port number, and the partner port number is the partner. The station port number is designated (step 8d), and a return transmission request is issued to the transmission control task (step 8e). The flow of this transmission is the fifth
It corresponds to the return transmission from the reception port 21b to the transmission port 20a in the figure, and indicates that the return transmission is performed from the port number received by the secondary station to the port number transmitted from the primary station.

Then, when the completion status of the return transmission is returned from the transmission control elevator, the task is restarted and the status is checked (steps 8f and 8g), and the secondary station processing is completed.

On the other hand, in the primary station processing, when the return transmission packet is output from the output queue of the secondary station station 19b in the secondary station processing and is received by the primary station station 19a and queued in the input queue, The port number of the partner station is 1 when sending back at the secondary station station as shown in
Since the transmission port 20a of the next station station 19a is specified and the return transmission is performed, it is input to the port corresponding to the transmission port 20a, and the task of the primary station matches the own station port in the waiting state. The primary station processing task waiting for the return data from the station of the opposite station to the port 20a is restarted, the received data is input and the received data processing is performed, and the primary station operation is completed.

The related operation of the primary station and the secondary station described above is the transmission operation of the transmission / reception signal unit of the group management control main function task and the group management control sub-function task for one machine.

As described above, between the group management control unit and each single unit control unit,
By specifying the port number of the own station / remote station at the time of transmitting the port forming the logical transmission path, the primary station processing and the secondary station processing between both control units are related and the logical transmission path is connected. As a result, the communication control between the processing units in the task by the logical transmission path is realized. By setting multiple logical transmission paths, even if multiple intra-task processing units exist and operate, inter-task communication is executed in parallel in multiple intra-task processing units regardless of the intra-task processing units of other ports. It will be possible. When N port-to-port connections are made, execution of N in-task processing units apparently proceeds simultaneously, and it becomes possible to execute N in-task communication between processing units in parallel. It is possible to improve the transmission efficiency of the common physical transmission line which is relatively high speed and the operation efficiency of the transmission control controller.

Therefore, relatively easy transmission control such as basic data transmission between the group management control unit and each individual control unit, distributed control processing from the main function task of the group management control unit to the sub-function task of each individual control unit, etc. By performing the high-intelligent transmission control of the above in parallel through separate logical transmission lines, it becomes possible to perform transmission control through a common physical transmission line, and it is possible to improve the system performance.

〔The invention's effect〕

As described above, according to the present invention, in a group management elevator system having a plurality of unit control devices, a plurality of logical transmission lines are set and multiplexed via a physical transmission line connecting the unit control devices. It is possible to improve the transmission efficiency of the physical transmission line by managing transmission control for each logical transmission line and performing communication between each task via the logical transmission line. It becomes possible to process communication between multiple tasks in parallel in a single unit controller, improve processing efficiency of each control computer and realize distributed processing of control functions, and improve overall elevator system performance and reliability. Can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of an elevator system for carrying out the present invention, FIG. 2A is a block diagram showing a configuration example of a software system of a group management control unit according to the present invention, and FIG. 2B is according to the present invention. FIG. 4 is a block diagram showing an example of a software system configuration of a single control unit in an elevator transmission control method, FIG. 3 is a block diagram showing an example of a configuration of a high speed transmission system hardware system according to the present invention, and FIG. 4 is a transmission according to the present invention. Block diagram showing a system configuration example of a logical transmission line of a system, FIG. 5 is a system diagram showing a connection between logical transmission lines according to the present invention, and FIG. 6 is a block diagram showing a control operation of a transmission control system according to the present invention. , FIG. 7 and FIG. 8 are the primary station and 2 in the inter-task communication according to the present invention, respectively.
FIG. 9 is a flow chart showing a concrete operation example of the next station function processing, FIG. 9 is an explanatory view showing an example of a management table managed by the transmission control software according to the present invention, and FIG. 10 is a structural example of a transmission / reception information unit used in the present invention. FIG. 1 ... Group management control unit, 2-1 to 2-M ... Single unit control unit,
3-1 to 3-M ... Hall call unit, 4-1 to 4-
M ... Hall call transmission control unit, 5 ... Monitoring panel, 6 ... High-speed transmission system, 7 ... Low-speed transmission system, 8 ... Real-time operating system, 9 ... Single control function task, 1
0,10A ... Group management control main function task, 11 ...
Group management control sub-function task, 12, 12A ... Transmission control task, 13 ... Microprocessor, 14 ... Data link controller, 15 ... Media access controller, 16 ... System bus, 17 ... Control line,
18: serial transmission system, 19a, 19b ... station, 20a, 20b ... transmission port, 21a, 21b
...... Incoming port.

Claims (1)

[Claims] 1. A single control unit provided in each of a plurality of elevators, which has a group management control sub-function task to control a corresponding elevator, and a group management control main function task that manages these single control units. A group management control unit,
A signal transmission control method for a group management elevator, comprising: a physical transmission line that connects the control units to each other to form a high-speed transmission system, wherein each control unit has a task between other control units. Set the port numbers for transmission and reception for communication between units for each transmission / reception processing unit in the task, set the management table for each port number, and manage the transmission / reception request. The group management control sub-function task communicates the transmission information to which the own station port number and the partner station port number are given to the group management control sub-function task via the physical transmission line, and the group management control sub-function task When the group management control sub-function task is executed based on the transmission information received from the task, and the execution result is returned to the group management control main function task as reply information. In addition, by adding the partner station port number and the own station port number to the sending information as the reply own station port number and the partner station port number, respectively, and sending the information to the group management control main function task, A signal transmission control method for a group management elevator, characterized in that inter-task communication is performed between a group management control main function task of a management control section and a group management control sub-function task of the single control section.