CN110703722A

CN110703722A - Control system, control device, and storage medium

Info

Publication number: CN110703722A
Application number: CN201910421093.8A
Authority: CN
Inventors: 合志春文; 池田朋浩; 松本裕作喜; 小松武行
Original assignee: Yaskawa Electric Corp
Current assignee: Yaskawa Electric Corp
Priority date: 2018-07-10
Filing date: 2019-05-20
Publication date: 2020-01-17
Also published as: TWI704436B; KR102302843B1; KR20200006504A; TW202006489A; JP6870664B2; JP2020009253A

Abstract

The invention relates to a control system, a control device and a storage medium, and provides a control system capable of easily verifying an operation history. The control system (1) comprises: an operation controller (100A) for controlling at least one device and generating display data including information relating to the operating state of the device; an operation interface device (200A) that displays an interface image based on display data generated by the operation controller (100A); a server station (300) which acquires display data and stores the display data; a reproduction controller (100B) which is a controller (100) capable of controlling at least one device in the same manner as the operation controller (100A) and which sequentially acquires display data accumulated in the server station (300); and a reproduction interface device (200B) which is a device capable of displaying an interface image in the same manner as the operation interface device (200A) and which displays an interface image based on the display data acquired by the reproduction controller (100B).

Description

Control system, control device, and storage medium

Technical Field

The invention relates to a control system, a control device and a storage medium.

Background

Patent document 1 discloses a production facility monitoring system including a production facility control unit, and a real-time monitoring device and a history monitoring device, which are connected to the production facility control unit via a network transmission path. The real-time monitoring device is used for real-time program monitoring. The history monitoring device has a large-capacity memory device for storing a program history, and monitors a past program history.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open No. 06-203283.

Disclosure of Invention

The invention provides a control system capable of easily verifying action history.

A control system according to an aspect of the present disclosure includes: an operation controller for controlling at least one device and generating display data including information on an operation state of the device; an operation interface device for displaying an interface image based on the display data generated by the operation controller; a server station for acquiring and storing display data from the operation controller; a reproduction controller which is a controller capable of controlling at least one device in the same manner as the operation controller, and which sequentially acquires the display data accumulated in the server station; and a reproduction interface device capable of displaying an interface image in the same manner as the operation interface device, the reproduction interface device displaying an interface image based on the display data acquired from the server station by the reproduction controller.

A control device according to another aspect of the present disclosure includes: a control processing unit for controlling at least one machine; a data generation unit that generates display data of an interface image displayed on the interface device, based on data obtained by the control processing unit controlling the at least one device; a record data transmitting unit that periodically transmits record data including the display data generated by the data generating unit to a server station for storing data; a reproduced data receiving unit that sequentially receives display data accumulated in the server station; a switching section that switches an operation mode in which the display data is generated by the data generating section and a reproduction mode in which the display data is acquired from the server station by the reproduction data receiving section; and a display data transmitting unit that transmits the display data to the interface device.

A storage medium according to still another aspect of the present disclosure stores a program that causes a control device to execute: controlling at least one machine based on an operation input acquired by an interface device displaying an interface image; generating data for displaying an interface image based on data obtained by controlling at least one device; periodically transmitting record data including data for display to a server station for accumulating data; sequentially receiving display data accumulated in the server station; switching an operation mode that generates data for display based on data obtained in control of at least one of the machines and a reproduction mode that acquires the data for display from the server station; and transmitting the display data to the interface device.

According to the present invention, it is possible to provide a control system capable of easily verifying an operation history.

Drawings

Fig. 1 is a block diagram illustrating a hardware configuration of a control system;

fig. 2 is a block diagram illustrating a functional configuration of the operation controller, the operation interface device, and the server station;

fig. 3 is a block diagram illustrating a functional configuration of a playback controller, a playback interface device, and a server station;

fig. 4 is a flowchart illustrating a setting procedure of an operation mode;

fig. 5 is a flowchart illustrating a recording procedure of data for display;

fig. 6 is a flowchart illustrating a display procedure of data for display;

FIG. 7 is a flowchart illustrating a accumulation procedure of recorded data;

fig. 8 is a flowchart illustrating a reproduction procedure of data for display;

fig. 9 is a flowchart illustrating a reproduction procedure of display data.

Detailed Description

Hereinafter, embodiments will be described in detail with reference to the drawings. In the description, the same reference numerals are given to the same elements or elements having the same function, and redundant description is omitted.

[ control System ]

The control system 1 according to the present embodiment is a system for controlling at least one device constituting an apparatus. Specific examples of the facilities include steel plant facilities (e.g., blast furnace facilities, continuous casting facilities, etc.), water treatment facilities (e.g., water supply facilities, water discharge facilities, etc.), and the like, but are not necessarily limited thereto. The device may be any device including a machine to be controlled.

As shown in fig. 1, the control system 1 includes an operation controller 100A, an operation interface device 200A, a server station 300, a playback controller 100B, and a playback interface device 200B.

The operation controller 100A (control device) controls at least one device and generates display data including information on the operation state of the device. Specific examples of the information related to the operating state include information indicating the state by size such as position, speed, and temperature, and information indicating the state by binary such as normal or abnormal. The display data may include information on an operation input (described later) to the operation controller 100A. The operation interface device 200A displays an interface image based on the display data generated by the operation controller 100A. The server 300 periodically acquires display data from the operation controller 100A and accumulates the display data. The playback controller 100B (control device) is a controller capable of controlling at least one device, as in the operation controller 100A, and sequentially acquires display data accumulated in the server station 300. The sequentially acquiring the data for display includes: acquiring display data recorded in the server 300 in the order of recording time; and display data recorded in the server 300 is acquired in reverse recording time order. In addition, in any order, it is also included that the data is acquired at intervals of every other data or every plurality of data. The reproduction interface device 200B is a device capable of displaying an interface image in the same manner as the operation interface device 200A, and displays an interface image based on the display data acquired by the reproduction controller 100B from the server station 300.

The operation controller 100A is, for example, a programmable logic controller that inputs and outputs signals to and from a device to be controlled. Specific examples of the signal include a control command signal (for example, an on/off command signal, a speed command signal, and the like) output to the machine, and a feedback signal (for example, an operation completion notification signal, an abnormality notification signal, and the like) input from the machine.

For example, the operation controller 100A has a circuit 110. The circuit 110 includes a processor 111, a memory 112, a storage 113, an interface communication port 114, a control input/output port 115, and a recording/reproducing communication port 116. The memory 113 is a nonvolatile storage medium (e.g., hardware or flash memory) readable by a computer. The memory 113 stores therein a program that causes the apparatus to execute the steps of: the display data including information on the operation state of the device is generated by controlling at least one device. The memory 112 temporarily stores programs downloaded from the memory 113, operation results performed by the processor 111, and the like. The processor 111 controls at least one machine by executing the program in cooperation with the memory 112, and generates display data including information relating to the operating state of the machine. The processor 111 may be constituted by a plurality of circuit elements.

The interface communication port 114 is connected to the operation interface device 200A via an interface communication path, and performs network communication with the operation interface device 200A in response to a command from the processor 111. The interface communication path is, for example, a Local Area Network (LAN) for operation monitoring. Here, the connection means that information communication is possible, and does not necessarily mean a wired physical connection. The same applies to the following. That is, the interface communication path may be a wireless communication path.

The control input/output port 115 is connected to at least one device (for example, a plurality of controlled devices 90 (devices) or an operation instrument (not shown)) via, for example, a high-speed field bus, and inputs and outputs signals to and from the plurality of controlled devices 90 or the operation instrument in accordance with instructions from the processor 111.

The recording/reproducing communication port 116 is connected to the server station 300 via a recording/reproducing communication path, and performs network communication with the server station 300 in accordance with an instruction from the processor 111. The recording/reproducing communication path is a different kind of communication path from the interface communication path, and is, for example, a LAN constituted by general ethernet (registered trademark). The fact that the two communication paths are of different types means that resources used for communication are independent of each other, and the communication load on one side does not limit the amount of communication on the other side. As a specific example of the relationship in which the communication load of one party does not limit the communication amount of the other party, there is a relationship in which physical resources (for example, cables) used for communication are independent of each other.

The operation Interface device 200A is, for example, an HMI (Human Machine Interface) device for inputting and outputting information to and from the operation controller 100A, and is connected to the operation controller 100A via an Interface communication path. For example, the operation interface apparatus 200A includes a main body 201, a display device 202, and an input device 203. The display device 202 is a device for displaying information to a user. As specific examples of the display device 202, a liquid crystal display, an organic EL (Electro-Luminescence) display, and the like can be given. The input device 203 is a device for acquiring an input of a user. Specific examples of the input device 203 include a keyboard, a touch panel, and a mouse. Further, the display device 202 and the input device 203 may be integrated as a so-called touch screen.

The body 201 has circuitry 210. The circuit 210 has a processor 211, a memory 212, a storage 213, an input/output port 214, and a communication port 215. The memory 213 is a non-volatile storage medium (e.g., hardware or flash memory) that is readable by a computer. The memory 213 stores therein a program that causes the apparatus to execute the steps of: an interface image based on the display data generated by the operation controller 100A is displayed. The memory 212 temporarily stores programs downloaded from the memory 213, operation results performed by the processor 211, and the like. The processor 211 executes the program in cooperation with the memory 212, thereby displaying an interface image based on the display data generated by the operation controller 100A. The processor 211 may be constructed from a plurality of circuit elements.

The input/output port 214 inputs and outputs information to and from the display device 202 and the input device 203 according to instructions from the processor 211. The communication port 215 is connected to the interface communication port 114 via an interface communication path, and performs network communication with the operation controller 100A in response to a command from the processor 211.

The control system 1 may further include a plurality of operation interface devices 200A. In this case, the interface communication port 114 of the operation controller 100A and the communication ports 215 of the plurality of operation interface devices 200A perform network communication.

The playback controller 100B is configured to be able to control at least one device, similarly to the operation controller 100A. For example, the playback controller 100B is a backup controller that can replace the operation controller 100A when the operation controller 100A fails, and the like, and includes the same circuit 110 as the operation controller 100A. The memory 113 of the playback controller 100B stores therein a program that causes the apparatus to execute the steps of: display data accumulated in the server 300 is sequentially acquired. The processor 111 of the playback controller 100B executes the program in cooperation with the memory 112, thereby sequentially acquiring display data stored in the server 300.

The interface communication port 114 of the playback controller 100B is connected to the playback interface device 200B via an interface communication path, and performs network communication with the playback interface device 200B in response to a command from the processor 111. When the playback controller 100B is used in place of the operation controller 100A, the control input/output port 115 of the playback controller 100B is connected to the plurality of control-target devices 90 and the operation devices (not shown), and inputs and outputs signals to and from the plurality of control-target devices 90 and the operation devices in accordance with instructions from the processor 111. The recording/reproducing communication port 116 of the reproducing controller 100B is connected to the server station 300 via a recording/reproducing communication path, and performs network communication with the server station 300 in response to a request from the processor 111.

Here, the program stored in the memory 113 of the reproduction controller 100B may be the same as the program stored in the memory 113 of the operation controller 100A. For example, the memory 113 of the operation controller 100A and the reproduction controller 100B stores therein a program that causes the apparatus to perform the following operations: controlling at least one machine; generating data for displaying an interface image based on data obtained by controlling at least one device; periodically transmitting record data including display data to the server station 300; sequentially receiving display data accumulated in the server 300; switching an operation mode that generates data for display based on data obtained in control of at least one of the machines and a reproduction mode that acquires the data for display from the server station 300; and transmitting the display data to an interface device (for example, the operation interface device 200A or the reproduction interface device 200B).

According to this program, the playback controller 100B can be operated as the operation controller 100A by switching the operation mode of the playback controller 100B from the playback mode to the operation mode. Similarly, by switching the operation mode of the operation controller 100A from the operation mode to the playback mode, the operation controller 100A can be operated as the playback controller 100B. That is, the operation controller 100A and the reproduction controller 100B can be switched to each other by simple mode switching.

The reproduction interface device 200B is a device capable of displaying an interface image in the same manner as the operation interface device 200A. For example, the reproduction interface device 200B is a standby HMI device that can replace the operation interface device 200A when the operation interface device 200A fails, and the like, and includes a main body 201, a display device 202, and an input device 203, as with the operation interface device 200A.

The memory 213 of the reproduction interface device 200B stores therein a program that causes the device to execute the following operations: an interface image based on the display data acquired by the playback controller 100B from the server 300 is displayed. The operation interface device 200A and the reproduction interface device 200B are different from each other in that display data is acquired from either the operation controller 100A or the reproduction controller 100B at all times, but the same point is the case in that an interface image based on the display data is displayed. Therefore, the program stored in the memory 213 of the reproduction interface device 200B may be the same as the program stored in the memory 213 of the operation interface device 200A.

The processor 211 of the reproduction interface device 200B executes the program in cooperation with the memory 212, and displays an interface image based on the display data acquired by the reproduction controller 100B from the server station 300. The communication port 215 of the reproduction interface device 200B is connected to the interface communication port 114 of the reproduction controller 100B via an interface communication path, and performs network communication with the reproduction controller 100B in response to a command from the processor 211.

The control system 1 may further include a plurality of reproduction interface devices 200B. In this case, the interface communication port 114 of the reproduction controller 100B and the communication ports 215 of the plurality of reproduction interface devices 200B perform network communication. The number of reproduction interface devices 200B may be smaller than the number of operation interface devices 200A.

The server station 300 is a general-purpose computer such as a personal computer, for example, and is connected to the operation controller 100A and the playback controller 100B via a recording/playback communication path. For example, the server station 300 has a main body 301, a display device 302, and an input device 303. The display device 302 is a device for displaying information to a user. As specific examples of the display device 302, a liquid crystal display, an organic EL display, and the like can be given. The input device 303 is a device for acquiring input of a user. Specific examples of the input device 303 include a keyboard, a touch panel, and a mouse. Further, the display device 302 and the input device 303 may be integrated into a so-called touch screen.

The body 301 has circuitry 310. The circuit 310 has a processor 311, a memory 312, a storage 313, an input/output port 314, a communication port 315, and a communication port 316. The memory 313 is a non-volatile storage medium (e.g., hardware or flash memory) that is readable by a computer. The memory 313 includes a storage area for storing a program for causing the apparatus to execute: the display data is acquired from the operation controller 100A and accumulated.

The memory 312 temporarily stores programs downloaded from the memory 313, calculation results performed by the processor 311, and the like. The processor 311 acquires display data from the operation controller 100A and stores the display data in the memory 313 by executing the program in cooperation with the memory 312. The processor 311 may be constructed from a plurality of circuit elements. The input/output port 314 inputs and outputs information to and from the display device 302 and the input device 303 in accordance with instructions from the processor 311. The communication port 315 is connected to the recording/reproducing communication port 116 of the operation controller 100A via a recording/reproducing communication path, and performs network communication with the operation controller 100A in response to a command from the processor 311. The communication port 316 is connected to the recording/reproducing communication port 116 of the reproducing controller 100B via a recording/reproducing communication path, and performs network communication with the reproducing controller 100B in response to a command from the processor 311.

The configuration of the operation controller 100A, the playback controller 100B, the operation interface device 200A, the playback interface device 200B, and the server station 300 will be described in more detail below. In the following description, the general description of the operation controller 100A and the reproduction controller 100B will be referred to as "controller 100" without distinguishing between them. Similarly, the interface device 200A and the reproduction interface device 200B are commonly used in the description, and are referred to as "the interface device 200" without distinction.

Fig. 2 is a block diagram illustrating a functional configuration (hereinafter, referred to as "functional module") of the operation controller 100A, the operation interface device 200A, and the server station 300. Fig. 3 is a block diagram illustrating functional blocks of the playback controller 100B, the playback interface device 200B, and the server station 300.

As shown in fig. 2 and 3, the controller 100 includes, as functional blocks, a user input acquisition unit 121, a control processing unit 122, a control storage unit 123, a data generation unit 124, an operation change detection unit 125, a state change detection unit 126, a reproduction data reception unit 127, a switching unit 128, an interface storage unit 129, a recording data transmission unit 131, and a display data transmission unit 132.

The user input acquisition unit 121 receives an operation input by the user (for example, an operation input to the display device 202) from the interface device 200. The user input acquisition unit 121 can further acquire a user input from the control input/output port 115 to the controller 100 without going through the interface device 200, the user input being made by an operation device (not shown). The control processing unit 122 controls at least one device (for example, the plurality of controlled devices 90). For example, the control processing unit 122 outputs various control commands such as a movement command to a predetermined position and a movement command at a predetermined speed to the control target device 90, and acquires information on the operation state corresponding to the control command from the control target device 90. The control processing unit 122 may control the control target device 90 to operate in accordance with the user input acquired by the user input acquisition unit 121. Hereinafter, the input of the user for specifying the control content of the control processing unit 122 is referred to as "operation input to the control processing unit 122".

The control storage unit 123 stores a control program to be executed by the control processing unit 122. The control program includes the content of the control command for the control target device 90 and the output timing of the control command. The control storage unit 123 acquires data (hereinafter, referred to as "control data") obtained by controlling the control target device 90 from the control processing unit 122 and temporarily stores the data. The control data includes information related to the operating state of the control target device 90 and information related to an operation input to the control processing unit 122. The information related to the operation state of the control target device 90 may include, for example: the information includes both information on the size, such as the operation position and speed, and binary information indicating whether the operation is normal or abnormal (for example, on/off of an alarm signal for notifying an abnormality).

The data generation unit 124 generates the display data based on the control data. More specifically, the data generation unit 124 generates display data by arranging the control data acquired from the control storage unit 123 in a predetermined format. The data generation unit 124 stores the generated display data in the interface storage unit 129. At this time, the data generation unit 124 may overwrite the old display data (the display data stored in the interface storage unit 129) with the newly stored display data.

The reproduced data receiving unit 127 sequentially receives the display data from the server station 300. The reproduction data receiving unit 127 stores the received display data in the interface storage unit 129. At this time, the reproduced data receiving unit 127 can overwrite the old display data (the display data stored in the interface storage unit 129) with the newly stored display data (see fig. 3).

The interface storage unit 129 is assigned to a predetermined address range in a physical storage area (for example, a storage area of the memory 112). This address range is dedicated to the interface storage section 129. That is, a storage unit other than the interface storage unit 129 (for example, the control storage unit 123 and the event storage unit 133 described later) is provided in an address range not allocated to the interface storage unit 129.

The display data transmitting unit 132 acquires display data corresponding to a request from the interface device 200 from the interface storage unit 129, and transmits the display data to the interface device 200.

The switching unit 128 switches between an operation mode of acquiring the display data to be transmitted from the display data transmitting unit 132 from the data generating unit 124 and a reproduction mode of acquiring the reproduction data from the reproduction data receiving unit 127. For example, the switching unit 128 switches between an operation mode (see fig. 2) in which the display data to be stored in the interface storage unit 129 is acquired from the data generating unit 124 and a reproduction mode (see fig. 3) in which the display data is acquired from the reproduction data receiving unit 127. When the switching unit 128 sets the operation mode of the controller 100 to the operation mode, the controller 100 may be used as the operation controller 100A. In the operation controller 100A, display data is input from the data generation unit 124 to the interface storage unit 129 (see fig. 2) via the switching unit 128.

When the switching unit 128 sets the operation mode of the controller 100 to the playback mode, the controller 100 can be used as the playback controller 100B. In the playback controller 100B, display data is input from the playback data receiving unit 127 to the interface storage unit 129 (see fig. 3) via the switching unit 128.

When a change in the content of the operation input to the control processing unit 122 satisfies a predetermined detection condition, the operation change detection unit 125 detects the information of the change as operation history information. For example, the operation change detection unit 125 detects the operation history information by referring to the control data stored in the control storage unit 123, and stores the detected operation history information in the event storage unit 133. The operation history information includes, for example, the time when the change satisfying the detection condition occurs and the content of the change. As a specific example of the detection condition, there is "the amount of change in the operation input exceeds zero". When such a condition is set, all information of a change occurring in the content of the operation input is detected as operation history information.

When a change in the state of the control target device 90 satisfies a predetermined detection condition, the state change detection unit 126 detects the change information as state history information and stores the state history information in the event storage unit 133. For example, the state change detection unit 126 detects the state history information by referring to the control data stored in the control storage unit 123, and stores the detected state history information in the event storage unit 133. The state history information includes, for example, the time when the change satisfying the detection condition occurs and the content of the change. Specific examples of the detection conditions include the following: the device alarm signal changes from the off state to the on state, and notifies the control target device 90 of the occurrence of an abnormality; and a change in the numerical value indicating the operating state of the controlled device 90 from the normal value to the abnormal value.

The recording data transmitting unit 131 periodically transmits, to the server station 300, recording data including the display data generated by the data generating unit 124. The log data transmitting unit 131 may periodically transmit log data including the operation history information to the server station 300, or may periodically transmit log data including the state history information to the server station 300. The log data transmitting unit 131 acquires display data included in the log data from the interface storage unit 129, and acquires operation history information and status history information included in the log data from the event storage unit 133. Further, the period in which the recording data transmitting section 131 transmits the recording data may be longer than the period in which the display data transmitting section 132 transmits the display data.

Each functional block of the controller 100 is configured by the processor 111 and the memory 112 executing a program in the storage 113 in cooperation with each other, for example. The controller 100 is not limited to a controller having each configuration that must be configured by a program. The functional blocks of at least a part of the controller 100, for example, the functional blocks that control communication, may be formed of a dedicated logic Circuit or an ASIC (Application Specific Integrated Circuit) into which the dedicated logic Circuit is Integrated.

The interface device 200 includes a display unit 222 and a user input acquisition unit 221 as functional blocks. The display unit 222 periodically receives display data for displaying an interface image set as a display target in advance from the display data transmitting unit 132, and displays the interface image based on the received display data. The interface image includes, for example, an image indicating the operation state of the control target device 90 based on the display data and a tool image used for user input. Specific examples of the tool image include a text box, a button, and the like for text input.

The user input acquisition unit 221 (operation input acquisition unit) acquires an input of a user. The user input includes at least an operation input to the control processing unit 122.

Each functional block of the interface device 200 is configured by the processor 211 and the memory 212 described above, for example, to execute a program in the storage 213 in cooperation. The interface device 200 is not limited to a device that must be configured into various components by a program. The functional blocks of at least a part of the interface device 200 may be constituted by dedicated logic circuits or ASICs in which the same are integrated.

The server station 300 includes, as functional blocks, a recorded data receiving unit 321, a recorded data storage unit 322, a reproduction data transmitting unit 323, a log display unit 325, a data extracting unit 326, and an operation mode setting unit 324.

The recording data receiving unit 321 receives the recording data transmitted by the recording data transmitting unit 131 and stores the received recording data in the recording data storage unit 322. The recording data accumulation unit 322 sequentially accumulates the recording data. For example, the recording data storage unit 322 sequentially stores time information such as the reception time of the recording data received by the recording data reception unit 321 and the content of the recording data in a corresponding manner. The recorded data accumulation unit 322 may store accumulated data in a single file (hereinafter, referred to as a "data file") at predetermined intervals. The record data storage 322 may automatically delete the old file in accordance with the decrease in the space of the storage area.

The reproduction data transmitting unit 323 sequentially transmits the display data accumulated in the recording data accumulating unit 322 to the reproduction data receiving unit 127. The log display unit 325 displays at least one of the state history information and the operation history information in accordance with an input to the operation mode setting unit 324. For example, the log display unit 325 displays at least one of the state history information and the operation history information by a chronological table or a graph.

The data extraction unit 326 extracts, from the recorded data storage unit 322, display data transmitted from the reproduction data transmission unit 323 to the reproduction data reception unit 127, status history information displayed on the log display unit 325, and operation history information displayed on the log display unit 325. For example, the data extraction section 326 performs the following operations in accordance with an input by the user (for example, an input to the input device 303): reading the data file from the recording data storage section 322; extracting the state history information and the operation history information in the data file and outputting the extracted information to the log display unit 325; and a data transmitting unit 323 for sequentially extracting the display data in the data file and outputting the display data to the playback data.

The operation mode setting unit 324 acquires an input from a user specifying an operation mode (the operation mode or the reproduction mode) of the controller 100 and outputs the input to the switching unit 128 of the controller 100. The switching unit 128 switches the operation mode and the acquisition mode in accordance with the designation of the operation mode acquired from the operation mode setting unit 324.

Each functional block of the server 300 is configured by the processor 311 executing a program in the memory 313 in cooperation with the memory 312, for example. The server 300 is not limited to a server that is configured by programs. The functional blocks of at least a part of the server station 300 may be constituted by dedicated logic circuits or ASICs in which it is integrated.

[ recording/reproducing procedure of control data ]

Next, as an example of a method of controlling recording/reproduction of data, a recording/reproduction program executed by the control system 1 is exemplified. Hereinafter, the program will be described in detail as being divided into a preset program, a recording program of display data, and a reproducing program of display data.

(Preset procedure)

Fig. 4 is a flowchart showing a procedure in which the server station 300 acquires the operation mode designation of the controller 100. As shown in fig. 4, the server station 300 performs steps S01, S02, S03, S04. In step S01, the operation mode setting unit 324 waits for the call of a function for specifying the operation mode (for example, the start of an application for specifying the operation mode). In step S02, the operation mode setting unit 324 displays a screen for specifying the operation mode (for example, on the display device 302). In step S03, the operation mode setting unit 324 waits for an input from the user to the screen for specifying the operation mode. In step S04, the operation mode setting unit 324 acquires an input to the screen for specifying the operation mode, and outputs the input to the switching unit 128 of the controller 100. The switching unit 128 sets the operation mode of the controller 100 to either the operation mode or the playback mode, as specified by the operation mode. The controller 100 whose operation mode is set to the operation mode in step S04 can be used as the operation controller 100A, and the interface device 200 connected to the controller 100 functions as the operation interface device 200A. On the other hand, the controller 100 whose operation mode is the playback mode in step S04 can be used as the playback controller 100B, and the interface device 200 connected to the controller 100 can function as the playback interface device 200B. In this way, the setting process of the operation mode is completed.

(recording program of display data)

Fig. 5 is a flowchart illustrating a recording procedure of display data executed by the operation controller 100A. As shown in fig. 5, the operation controller 100A first executes steps S31, S32. In step S31, the control processing unit 122 acquires, from the user input acquisition unit 121, information of the operation input acquired from the user input acquisition unit 221 or the like. In step S32, the operation change detection unit 125 confirms whether or not the change in the operation input (change in the operation input acquired since the previous time) satisfies a preset detection condition.

If it is determined in step S32 that the change in the operation input satisfies the detection condition, the operation controller 100A executes step S33. In step S33, the operation change detection unit 125 detects information of a change in the operation input as operation history information, and stores the operation history information in the event storage unit 133.

Next, the operation controller 100A executes step S34. If it is determined in step S32 that the change in the operation input does not satisfy the detection condition, the operation controller 100A executes step S34 while omitting step S33. In step S34, the control processing unit 122 acquires information on the operation state from the control target device 90.

Next, the operation controller 100A executes step S35. In step S35, the control processing unit 122 checks whether or not the change in the operating state (change in the operating state acquired since the previous time) satisfies a preset detection condition.

When it is determined in step S35 that the change in the operation state satisfies the detection condition, the operation controller 100A executes step S36. In step S36, the state change detection unit 126 detects the information of the change in the operation state as state history information, and stores the state history information in the event storage unit 133.

Next, the operation controller 100A executes step S37. If it is determined in step S35 that the change in the operating state does not satisfy the detection condition, the operation controller 100A executes step S37 while omitting step S36. In step S37, the control processing unit 122 outputs a control command to the control target device 90 based on the control program, the operation input, and the operating state stored in the control storage unit 123. For example, the control processing unit 122 calculates a control command for bringing the operation state close to the state according to the control program and the operation input, and outputs the control command to the control target device 90. The control processing unit 122 stores the control data obtained by controlling the control target device 90 in the control processing unit 122.

Next, the operation controller 100A executes steps S38, S41, S42. In step S38, the data generation unit 124 generates the display data based on the control data and stores the display data in the interface storage unit 129. In step S41, the control processing unit 122 waits for the control period to elapse. In step S42, the recording data transmission unit 131 checks whether or not a cycle for transmitting the recording data (hereinafter referred to as a "recording cycle") has elapsed.

If it is determined in step S42 that the recording cycle has elapsed, the operation controller 100A executes step S43. In step S43, the record data transmitting unit 131 transmits the record data including the display data stored in the interface storage unit 129 and the operation history information and the state history information stored in the event storage unit 133 to the record data receiving unit 321, and deletes the stored content of the event storage unit 133.

Thereafter, the operation controller 100A returns the process to step S31. In the case where it is determined in step S42 that the recording cycle has not elapsed, the operation controller 100A returns the process to step S31 without executing step S43. Thereafter, the control by the control processing unit 122 is repeated at a control cycle, and the transmission of the recording data to the server station 300 is repeated at a recording cycle.

Fig. 6 is a flowchart illustrating a display program of display data executed by the operation interface device 200A. As shown in fig. 6, the operation interface device 200A executes steps S51, S52, S53. In step S51, the display unit 222 acquires data for displaying an interface image set as a display target in advance from the display data transmission unit 132. For example, the display unit 222 specifies identification information of data for displaying an interface image, and acquires data extracted by the display data transmitting unit 132 from the display data in the interface storage unit 129, in accordance with the identification information. In step S52, the display unit 222 displays the updated interface image based on the received display data. In step S53, the display unit 222 waits for a predetermined display update period to elapse. Thereafter, the operation interface device 200A returns the process to step S51. Thereafter, the acquisition of the display data and the update of the interface image are repeated at a display update cycle.

Fig. 7 is a flowchart illustrating a accumulation procedure of the record data performed by the server station 300. As shown in fig. 7, the server station 300 first performs steps S61, S62. In step S61, the recording data reception unit 321 waits for reception of the recording data. In step S62, the recording data reception unit 321 receives and accumulates the recording data transmitted by the recording data transmission unit 131. For example, the recording data receiving unit 321 stores time information such as the reception time of the recording data and the content of the recording data in a temporary storage area (for example, the storage area of the memory 312) in association with each other in a data file.

Next, the server station 300 executes step S63. In step S63, the recording data reception section 321 confirms whether the number of recording data accumulated to the data file reaches a predetermined number (for example, the number of data for one hour component). In step S63, in the case where it is determined that the number of recorded data has not reached the predetermined number, the server station 300 returns the process to step S61. Thereafter, the reception and accumulation of the recording data are repeated until the number of recording data accumulated in the data file reaches a predetermined number. In step S63, in the case where it is determined that the number of recorded data reaches the predetermined number, the server station 300 executes step S64. In step S64, the recording data reception unit 321 saves the data file in the recording data storage unit 322. The recording data receiving unit 321 may save the data file by adding a file name including the date and time of saving.

Next, the server station 300 executes step S65. In step S65, the recording data storage unit 322 checks whether or not the remaining capacity (for example, the capacity of an area in the memory 313 allocated to the storage area in the recording data storage unit 322 in which no data file is stored) is smaller than a preset file deletion reference value. In step S65, if it is determined that the remaining capacity is equal to or greater than the file deletion reference value, the server station 300 returns the process to step S61. Thereafter, the accumulation of the recording data and the storage of the data file are repeated until the remaining capacity becomes smaller than the file deletion reference value. In step S65, when determining that the remaining capacity is smaller than the file deletion reference value, the recording data storage unit 322 deletes the oldest one of the data files. The recorded data storage unit 322 can delete a plurality of files in order from the oldest side. The server 300 repeatedly executes the above accumulation program.

(reproduction program of display data)

Fig. 8 is a flowchart illustrating a reproduction procedure of display data executed by the server station 300. Here, the reproduction means that the display data accumulated in the recording data accumulation unit 322 is sequentially transmitted to the reproduction controller 100B. The playback controller 100B sequentially acquires the display data transmitted from the server station 300, and the playback interface device 200B displays an interface image based on the display data acquired by the playback controller 100B.

First, the server station 300 executes steps S71, S72. In step S71, the data extraction unit 326 waits for the call of the reproduction operation function (for example, the start of an application for the reproduction operation). In step S72, the data extraction unit 326 displays a screen for reproduction operation (for example, on the display device 302).

Next, the server station 300 performs steps S73, S74, S75, S76. In step S73, the data extraction section 326 waits for a download (read from the memory 313) instruction of the data file. For example, the data extracting unit 326 waits for the download button of the data file to be operated (for example, click or tap) on the playback operation screen. In step S74, the data extraction unit 326 displays a screen for selecting a data file. In step S75, the data extraction unit 326 waits for the selection input of the data file on the selection screen. The operator of the server 300 selects a data file of a time slot to be reproduced on the screen for selecting a data file based on date and time information included in the file name and the like. In step S76, the data extraction unit 326 downloads the selected data file. Hereinafter, the downloaded data file is referred to as a "playback target file".

Next, the server station 300 executes step S77. In step S77, the data extraction unit 326 confirms whether or not an operation history search instruction (an instruction to search for operation history information in the playback target file) has been input. For example, the data extraction unit 326 confirms whether or not the operation history search button is operated (for example, clicked (click) or tapped (tap)) on the reproduction operation screen. In step S77, in a case where it is determined that the operation history retrieval instruction is input, the server station 300 executes step S78. In step S78, the data extraction unit 326 extracts the operation history information in the playback target file and outputs the operation history information to the log display unit 325. In response to this, the log display unit 325 displays the extracted operation history information list on the playback operation screen. Further, the list display may include display of identification information (for example, frame number) of the display data corresponding to each operation history information.

In step S77, in a case where it is determined that the operation history retrieval instruction has not been input, the server station 300 executes step S81. In step S81, the data extraction unit 326 confirms whether or not a state history search command (a command to search for state history information in the playback target file) has been input. For example, the data extraction unit 326 confirms whether or not the state history search button is operated (for example, clicked (click) or tapped (tap)) on the playback operation screen. In step S81, if it is determined that the state history search instruction is input, the server station 300 executes step S82. In step S82, the data extraction unit 326 extracts the state history information in the playback target file and outputs the state history information to the log display unit 325. In response to this, the log display unit 325 displays the extracted state history information in a list on the playback operation screen. Further, the list display may include display of identification information (for example, frame number) of the display data corresponding to each status history information.

After step S78 or step S82, the server station 300 executes step S83. If it is determined in step S81 that the state history search command has not been input, the server station 300 executes step S83 without executing steps S78 and S82. In step S83, the data extraction unit 326 confirms whether or not a reproduction start instruction is input. For example, the data extraction unit 326 confirms whether or not an input button of a reproduction instruction is operated (for example, clicked (click) or tapped (tap)) on the reproduction operation screen. In step S83, in a case where it is determined that the reproduction start instruction has not been input, the server station 300 returns the process to step S77. Thereafter, the waiting of the operation history search command and the state history search command and the extraction and display of the operation history information and the state history information corresponding to the commands are repeated until the reproduction start command is input.

The reproduction operation screen may include a plurality of input buttons for reproduction instructions. Specific examples of the input button include a forward playback button for displaying display data in the order of old recording time, and a reverse playback button for playing back display data in the order of new recording time. Further, the reproduction operation screen may further include a tool for specifying a reproduction condition. Specific examples of the tool for specifying the reproduction condition include a start frame input box for inputting identification information of display data for starting reproduction, a fast-forward button for accelerating transition of display data to be reproduced to a side with a new recording time, and a rewind button for accelerating transition of display data to be reproduced to a side with an old recording time.

In the case where it is determined in step S83 that the reproduction start instruction is input, the server station 300 executes step S91 as shown in fig. 9. In step S91, the data extraction unit 326 sets a playback condition based on the input content for the playback operation screen. For example, the data extracting unit 326 determines whether to execute sequential reproduction (reproduction of display data in the order of old recording time) or reverse reproduction (reproduction of display data in the order of new recording time) based on which of the sequential reproduction button and the reverse reproduction button is operated. The data extraction unit 326 may determine display data to be played back based on an input to the start frame input box or the like.

Next, the server station 300 executes steps S92, S93. In step S92, the data extraction unit 326 extracts display data to be reproduced next (hereinafter referred to as "reproduction data") from the data file based on the reproduction conditions, and outputs the display data to the reproduction data transmission unit 323. In step S93, the reproduction data transmitting unit 323 outputs the reproduction data to the reproduction data receiving unit 127 of the reproduction controller 100B. In response to this, the reproduction data receiving unit 127 writes the reproduction data in the interface storage unit 129. When the reproduction data is written in the interface storage unit 129, an interface image based on the reproduction data is displayed by the reproduction interface device 200B. Further, the processing performed by the reproduction interface device 200B for display of the interface image is the same as the above-described steps S51, S52, S53 performed by the operation interface device 200A.

Next, the server station 300 executes step S94. In step S94, the data extraction unit 326 checks whether or not a change instruction of the reproduction condition is not input. Specific examples of the command for changing the playback condition include a reverse command for a playback direction by an operation of the forward playback button or the reverse playback button, and a playback acceleration command by an operation of the fast forward button or the reverse playback button. As another specific example, a command to jump the reproduction position to the display data corresponding to the identification information by a combination of the input of the identification information to the start frame input frame and the operation of the forward reproduction button or the reverse reproduction button may be given.

When it is determined in step S94 that there is a command to change the playback condition, the server station 300 returns the process to step S91, and resumes the extraction and transmission of the display data after the playback condition is set again. In step S94, if it is determined that there is no instruction to change the playback condition, the server station 300 executes step S95. In step S95, the data extraction unit 326 confirms whether or not a reproduction stop instruction is input. For example, the data extraction unit 326 confirms whether or not an input button of a stop instruction is operated (for example, clicked (click) or tapped (tap)) on the reproduction operation screen.

In step S95, if it is determined that there is no stop instruction, the server station 300 executes step S96. In step S96, the data extraction unit 326 checks whether or not a preset reproduction frame period has elapsed. For example, the data extraction unit 326 confirms whether or not the elapsed time from the immediately preceding step S92 has reached the above-described reproduction frame period. In the case where it is determined in step S96 that the reproduction frame period has not elapsed, the server station 300 returns the process to step S94. Thereafter, the confirmation of the presence or absence of the command to change the playback condition and the command to stop the playback is continued until the playback frame period has elapsed.

In step S96, in the event that determination is made that the reproduction frame period has elapsed, the server station 300 executes step S97. In step S97, the data extraction unit 326 shifts the frame to be reproduced (the identification information of the display data) to the next frame in accordance with the reproduction conditions. When the playback acceleration command is input as a command to change the playback condition, the data extraction unit 326 may shift the frame to be played back to a frame that skips one or more frames. That is, the data extraction unit 326 may extract the display data so as to sandwich one data or sandwich a plurality of data. Thereby, reproduction is accelerated. Further, instead of extracting the display data, the reproduction can be speeded up by shortening the reproduction frame period. After the execution of step S97, the server station 300 returns the process to step S92. Thereafter, as long as there is no input of a change instruction or a stop instruction of the reproduction condition, reproduction according to the reproduction condition is continued.

In step S95, if it is determined that there is a stop instruction, the server station 300 ends the playback program. When the display data to be reproduced reaches the end of the file to be reproduced (the display data with the latest recording time in the case of forward reproduction and the display data with the oldest recording time in the case of reverse reproduction), the server 300 may terminate the reproduction procedure or may return to the beginning of the file to be reproduced (the display data with the oldest recording time in the case of forward reproduction and the display data with the latest recording time in the case of reverse reproduction) and continue the reproduction.

[ Effect of the present embodiment ]

As described above, the control system 1 includes: an operation controller 100A that controls at least one device and generates display data including information on an operation state of the device; an operation interface device 200A that displays an interface image based on the display data generated by the operation controller 100A; a server station 300 that acquires display data from the operation controller 100A and accumulates the display data; a playback controller 100B that is a controller 100 capable of controlling at least one device, as in the operation controller 100A, and sequentially acquires display data accumulated in the server station 300; and a reproduction interface device 200B capable of displaying an interface image in the same manner as the operation interface device 200A, and displaying an interface image based on the display data acquired by the reproduction controller 100B from the server station 300.

According to this control system, the same situation as in the following case is reproduced between the reproduction controller 100B and the reproduction interface device 200B: an interface image based on the display data generated by the operation controller 100A is displayed on the operation interface device 200A. Therefore, by reproducing the past interface image in the same manner as the display of the interface image by the operation interface device 200A, the operation history can be easily verified. Specifically, since the display data in the same manner as the display data generated by the operation controller 100A is reproduced in the reproduction controller 100B, any interface image can be displayed on the reproduction interface device 200B after the fact, even if the interface image is based on the display data. Therefore, even an interface image that is not displayed on the operation interface device 200A can be reproduced later on in the reproduction interface device 200B.

Further, since the playback controller 100B is configured by the controller 100 that can control the device similarly to the operation controller 100A, the playback controller 100B can be effectively used as a backup for the operation controller 100A. In other words, the backup of the operation controller 100A can be effectively used as the reproduction controller 100B.

Similarly, since the reproduction interface device 200B is configured by a device that can display an interface image similarly to the operation interface device 200A, the reproduction interface device 200B can be effectively used as a backup for the operation interface device 200A. In other words, the backup of the operation interface device 200A can be effectively used as the reproduction interface device 200B.

Further, the configuration can be made common in the operation interface device 200A and the reproduction interface device 200B. Therefore, the transfer can be easily performed. In addition, the operation interface device 200A and the reproduction interface device 200B can be generalized in software. Therefore, the software update is easy. This enables effective management and operation of the system.

The operation interface device 200A and the reproduction interface device 200B are connected to the operation controller 100A and the reproduction controller 100B via interface communication paths, respectively, and the server station 300 may be connected to the operation controller 100A and the reproduction controller 100B via a recording/reproduction communication path different from the interface communication path. In this case, even if the transmission frequency of data from the operation controller 100A to the server station 300 and the transmission frequency of data from the server station 300 to the reproduction controller 100B increase, the communication load on the interface communication path does not increase. Therefore, the period for accumulating the display data in the server 300 can be shortened. This enables the action history to be verified in more detail.

Each of the operation controller 100A and the reproduction controller 100B includes: a control processing unit 122 that controls at least one control target device 90; a data generation unit 124 that generates display data based on data obtained by the control processing unit 122 in controlling the at least one control target device 90; a recording data transmitting unit 131 that periodically transmits, to the server station 300, recording data including the display data generated by the data generating unit 124; a reproduced data receiving unit 127 that sequentially receives display data from the server station 300; a display data transmitting unit 132 that transmits display data to the operation interface device 200A or the reproduction interface device 200B; and a switching unit 128 that switches between an operation mode in which the display data to be transmitted by the display data transmitting unit 132 is acquired from the data generating unit 124 and a reproduction mode in which the display data is acquired from the reproduction data receiving unit 127. In this case, the operation controller 100A and the playback controller 100B can be made common, and the switching unit 128 can switch the operation mode and the playback mode only, thereby facilitating the switching between the operation mode and the playback mode. Software can be generalized in the operation controller 100A and the playback controller 100B. Therefore, the software update is easy. This makes it possible to effectively manage and operate the system.

Each of the operation controller 100A and the reproduction controller 100B may further include a state change detection unit 126, and when a state change of the control target device 90 satisfies a predetermined detection condition, the state change detection unit 126 may detect information of the change as state history information, and the log data transmission unit 131 may periodically transmit log data further including the state history information to the server station 300. In this case, the past interface image can be reproduced with reference to the state history information in the range to be verified. Therefore, the action history can be verified more easily.

Each of the operation interface device 200A and the reproduction interface device 200B includes a display unit 222 for displaying an interface image and a user input acquisition unit 221 for acquiring an operation input to the control processing unit 122, each of the operation controller 100A and the reproduction controller 100B further includes an operation change detection unit 125, and when a change in the content of the operation input satisfies a preset detection condition, the operation change detection unit 125 detects information of the change as operation history information, and the record data transmission unit 131 may periodically transmit record data further including the operation history information to the server station 300. In this case, the operation history information is referred to, and the interface image in the past can be reproduced while limiting the range to be verified. Therefore, the action history can be verified more easily.

Each of the operation controller 100A and the reproduction controller 100B further includes an interface storage unit 129, the interface storage unit 129 being allocated to a predetermined address range in a physical storage area, the data generation unit 124 storing the generated display data in the interface storage unit 129, the recording data transmission unit 131 acquiring the display data to be included in the recording data transmitted to the server station 300 from the interface storage unit 129, the reproduction data reception unit 127 storing the received display data in the interface storage unit 129, and the display data transmission unit 132 acquiring the display data transmitted to the operation interface device 200A or the reproduction interface device 200B from the interface storage unit 129. In this case, by fixing the address range for storing the display data, writing and reading of the display data can be speeded up. This can further shorten the period for accumulating the display data in the server 300.

Further, according to the configuration in which the data for displaying the interface image is acquired from the specific storage area, the search range of the display data is not changed even when the control target device 90 is changed or added, and therefore, it is not necessary to add a change to the program relating to the interface between the controller 100 and the interface device 200. Therefore, the system can be managed and operated more efficiently.

The embodiments have been described above, but the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the spirit thereof.

Description of the symbols

A 1 … control system, a 90 … control target device (equipment), a 100 … controller, a 100a … operation controller (control device), a 100B … reproduction controller (control device), a 122 … control processing unit, a 124 … data generating unit, a 125 … operation change detecting unit, a 126 … state change detecting unit, a 127 … reproduction data receiving unit, a 128 … switching unit, a 129 … interface storage unit, a 131 … recorded data transmitting unit, a 132 … display data transmitting unit, a 200 … interface device, a 200a … operation interface device, a 200B … reproduction interface device, a 221 … user input acquiring unit (operation input acquiring unit), and a 300 … server station.

Claims

1. A control system, comprising:

an operation controller that controls at least one device and generates display data including information on an operating state of the device;

an operation interface device that displays an interface image based on the display data generated by the operation controller;

a server station that acquires the display data from the operation controller and accumulates the display data;

a reproduction controller which is a controller capable of controlling the at least one device in the same manner as the operation controller and sequentially acquires the display data accumulated in the server station; and

the reproduction interface device is a device capable of displaying the interface image as in the operation interface device, and displays the interface image based on the display data acquired by the reproduction controller from the server station.

2. The control system of claim 1,

the operation interface device is connected to the operation controller via an interface communication path, the reproduction interface device is connected to the reproduction controller via an interface communication path,

the server station is connected to the operation controller and the reproduction controller via a recording/reproduction communication path, which is different from the interface communication path.

3. The control system according to claim 1 or 2, wherein,

the operation controller and the reproduction controller each include:

a control processing unit for controlling at least one machine;

a data generation unit configured to generate the display data based on data obtained by the control processing unit controlling the at least one device;

a record data transmitting unit that periodically transmits record data to the server station, the record data including the display data generated by the data generating unit;

a reproduced data receiving unit that sequentially receives the display data from the server station;

a display data transmitting unit that transmits the display data to the operation interface device or the reproduction interface device; and

a switching unit that switches between an operation mode in which the display data to be transmitted by the display data transmitting unit is acquired from the data generating unit and a reproduction mode in which the display data to be transmitted by the display data transmitting unit is acquired from the reproduction data receiving unit.

4. The control system of claim 3,

the operation controller and the reproduction controller each further include:

a state change detecting unit that detects, when a state change of the device satisfies a predetermined detection condition, information of the change as state history information,

the logging data also includes the state history information.

5. The control system of claim 3,

the operation interface device and the reproduction interface device each include:

a display unit that displays an interface image; and

an operation input acquisition unit that acquires an operation input to the control processing unit,

the operation controller and the reproduction controller each further include:

an operation change detection unit that detects, when a change in the content of the operation input satisfies a preset detection condition, information of the change as operation history information,

the log data also includes the operation history information.

6. The control system of claim 3,

the operation controller and the reproduction controller each further include: an interface storage unit which is allocated to a predetermined address range in a physical storage area,

the data generation unit stores the generated display data in the interface storage unit,

the recording data transmitting unit acquires the display data to be included in the recording data transmitted to the server station from the interface storage unit,

the reproduction data receiving unit stores the received display data in the interface storage unit,

the display data transmitting unit acquires the display data to be transmitted to the operation interface device or the reproduction interface device from the interface storage unit.

7. A control device, comprising:

a control processing unit for controlling at least one machine;

a data generation unit that generates display data of an interface image to be displayed by the interface device, based on data obtained by the control of the at least one device by the control processing unit;

a record data transmitting unit that periodically transmits record data including the display data generated by the data generating unit to a server station for storing data;

a reproduced data receiving unit that sequentially receives the display data accumulated in the server station;

a switching unit that switches an operation mode in which the display data is generated by the data generation unit and a reproduction mode in which the display data is acquired from the server station by the reproduction data reception unit; and

and a display data transmitting unit that transmits the display data to the interface device.

8. A storage medium storing a program that causes a control device to execute:

controlling at least one machine based on an operation input acquired by an interface device displaying an interface image;

generating data for display of the interface image based on data obtained in the control of the at least one device;

periodically transmitting log data to a server station for storing data, the log data including the data for display;

sequentially receiving the display data accumulated in the server station;

switching an operation mode and a reproduction mode, the operation mode being a mode in which the display data is generated based on data obtained in control of the at least one device, the reproduction mode being a mode in which the display data is acquired from the server station; and

and transmitting the display data to the interface device.