KR20140045002A - Human machine interface system with remote control function - Google Patents

Human machine interface system with remote control function Download PDF

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Publication number
KR20140045002A
KR20140045002A KR1020120110700A KR20120110700A KR20140045002A KR 20140045002 A KR20140045002 A KR 20140045002A KR 1020120110700 A KR1020120110700 A KR 1020120110700A KR 20120110700 A KR20120110700 A KR 20120110700A KR 20140045002 A KR20140045002 A KR 20140045002A
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KR
South Korea
Prior art keywords
operation level
operator
hmi system
hmi
worker
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KR1020120110700A
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Korean (ko)
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KR101661378B1 (en
Inventor
박아연
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엘에스산전 주식회사
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Priority to KR1020120110700A priority Critical patent/KR101661378B1/en
Publication of KR20140045002A publication Critical patent/KR20140045002A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The present invention relating to an HMI system with a remote control function, manages authentication information and operation level information of operators who access the HMI system, and performs a process to enable only persons with the uppermost operation level among currently accessing operators to operate control target devices. By this means, the present invention enables an administrator, who administrates operations, to operate the control target devices at any time without a disturbance from other operators, does not generate data synchronization problems, and does not give inconvenience to operators who attempt to refer to states or data of the control target devices because the operators not having the highest priority right can perform operations which are not related to the synchronization. Therefore, the present invention may more stably operate the HMI system which a plurality of operators may concurrently access. [Reference numerals] (20) HMI system; (21) Management information storage part; (22) Authentication processing part; (23) Operation level checking part

Description

Human Machine Interface System with Remote Control Function

The present invention relates to an HMI system having a remote control function, and in particular, when several users remotely access and monitor / operate an HMI system through a personal computer, a tablet computer, a mobile device, and the like, while maintaining synchronization. Allows efficient control of each operator's operation.

Human Machine Interface (HMI) systems used in industrial automation communicate with a variety of controlled devices (eg PLCs, Inverters, etc.) and allow the operator to monitor or operate the controlled devices via HMI screens.

Operator can check on-site situation through HMI screen and control on-site operation by touch, etc., check emergency situation, operation log, alarm contents and take appropriate action.

On the other hand, in the industrial field, it is necessary to allow several workers to access the HMI system at the same time, and the conventional HMI system does not adequately accommodate such a requirement due to synchronization problems when multiple workers access simultaneously.

Conventional HMI systems have the following problems.

(1) Restricting multiple accesses: When one remote terminal accesses the HMI system, if another operator attempts to access the HMI system remotely, the connection is not allowed. Therefore, it is inconvenient for workers who simply want to monitor the HMI screen and receive the information of the device to be controlled.

(2) Synchronization problem: When the operator touches the HMI screen in the field to operate the controlled device, if the remote terminal simultaneously operates the screen, synchronization between the two operations is difficult. In addition, when accessing the memory of the controlling device at the same time or when an operation of one of the errors occurs, problems may occur in other operations.

(3) Computation load: If each remote terminal performs operation simultaneously with a plurality of remote connections, the operation, communication, operation, etc. in the HMI system may be overloaded. As a result, tasks requiring time accuracy may be delayed or the HMI system may not operate reliably.

(4) Problems with operating rights: There is no operator authentication procedure, so anyone from a remote location can access the HMI system. In addition, there may be situations in which the highest priority workers (eg, job managers, managers, etc.) cannot operate the HMI system because there is no priority for work.

As described above, the conventional HMI system has a problem in that it is difficult to control a plurality of connections when the HMI screen is displayed and operated remotely and is vulnerable to stability.

Accordingly, the present invention has been made to solve the above problems, the HMI system to allow remote access to properly control the simultaneous operation of multiple operators, smoothly without problems such as asynchronous, overload, access rights, etc. The purpose is to make it work.

In order to achieve the above object, the HMI system having a remote control function according to the present invention is connected to the control target device, and provides an HMI screen for reading and displaying or operating the information of the control target device, A system that allows remote access by workers,

A management information storage unit for storing operation level information and worker authentication information; An authentication processing unit for authenticating the worker by using the worker authentication information of the management information storage unit; And an operation level checking unit for determining an operator having a highest operation level by checking an operation level of a certified worker.

Only the worker with the highest operation level among the workers who are currently connected is allowed to operate the control target device.

The operation level information may be set corresponding to the worker authentication information.

At this time, the operation level checking unit checks the operation level of the worker through the authentication information input by the worker.

In addition, the operation level information may be configured to be directly input by the operator.

At this time, the operation level checking unit checks the operation level through the operation level information input by the operator.

When the operation level of the currently connected worker is the same, the operation level checking unit may determine the first connected worker as the worker having the highest operation level.

The HMI system may process so that an operator who does not have the highest operation level among the authorized operators can inquire the information of the control target device.

The HMI system may include a communication server communicating with a communication client of a remote terminal to transmit and synchronize data and a program for providing the HMI screen.

According to the present invention, when a plurality of workers are connected at the same time, only the operator with the highest operation level among the certified workers can preferentially control the field operation through the HMI system. Accordingly, the following effects are obtained.

The administrator in charge of the work can have the highest priority on the operation of the HMI system, so that the controlled device can be operated at any time without disturbing the operation of the controlled device by other workers.

Only the worker with the highest priority can always operate, so there is no data synchronization problem.

Workers who do not have the highest priority can perform tasks that are not related to synchronization, so it is not inconvenient for workers who want to inquire about the status or data of the controlled device.

Only authorized personnel can access the HMI system through operator authentication information such as ID and password, thereby preventing unauthorized HMI system operation from a remote location and ensuring safety.

1 is an example of an HMI system allowing remote access,
2 is an embodiment of an HMI system according to the present invention,
3 is an example for explaining a management information storage unit;
4 illustrates an example in which an HMI system handles a worker's request differently according to an operation level;
5 is a specific embodiment of an HMI system according to the present invention;
6 is an example of an operation process between the HMI system and the remote terminal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the HMI system 20 according to the present invention communicates with various control target devices 11 such as a programmable logic controller (PLC) or an inverter and provides an HMI screen for interfacing with an operator.

The operator can operate the control target device 11 through the HMI screen, or can query and monitor various types of information such as the state or stored value of the control target device 11. The HMI screen can be configured in various ways according to various conditions such as the type of device to be controlled, types of operation commands, information to be displayed, and operator convenience.

In addition, the HMI system 20 is a mobile device (15-1), a personal computer (15-2), through the communication network 13 to enable the operator to remotely operate or monitor the control target device (11), It may be connected to various remote terminals such as the tablet computer 15-3.

Provides HMI screen to interface with the operator, communicates with the controlled device according to the operator's instructions to operate the corresponding controlled device or inquires the information, and connects the remote terminal to the controlled device remotely. The HMI system 20 may be configured in various ways as necessary, as long as a function for enabling operation or monitoring is implemented.

Referring to FIG. 2, the HMI system 20 includes a management information storage unit 21, an authentication processing unit 22, and an operation level checking unit 23.

The management information storage unit 21 stores operation level information and worker authentication information.

The worker authentication information is information for confirming whether the worker is authorized, and may be variously configured. For example, ID and password can be used as worker authentication information.

The operation level information refers to information for differentiating the authority of workers accessing the HMI system 20.

The operation level may be arbitrarily divided according to what work can be done through the HMI system 20, but should be divided into at least two or more levels to determine who has the highest priority among two or more workers.

The level of operation corresponding to each operator can be determined in various ways.

As in the example shown in FIG. 3, the operation level information may be set corresponding to the worker authentication information, respectively. For example, level_1, level_2, and level_3 can be set as the operation level for ID_1, ID_2, and ID_3 of worker authentication information, respectively.

In this case, the operation level checking unit 23 may read the operation level corresponding to the authentication information input by the operator to check the operation level of the operator. That is, if a worker is connected using the authentication information ID_2, the worker's operation level is level_2.

As another example, the operation level information may be processed so that an operator who accesses the HMI system 20 arbitrarily inputs one of the preset operation levels.

That is, the authentication information of the worker is not set in advance at a specific operation level, the operator may input the operation level according to the work to be performed by the worker.

In this case, the operation level checking unit 23 confirms the operation level information input by the worker as the operation level of the worker. For example, the operation level information and the operator authentication information of FIG. 3 do not correspond to each other but are merely listed.

Therefore, the worker who connects using ID_1 can input an operation level most appropriate to the contents to be worked on among level_1 to level_3.

The authentication processing unit 22 authenticates the worker to be connected to the HMI system 20 using the worker authentication information of the management information storage unit 21. That is, if the authentication information input by the operator who wants to connect to the HMI system 20 is recorded in the management information storage unit 21, the connection can be granted, otherwise the connection can be refused.

The operation level checking unit 23 determines the operator having the highest operation level by checking the operation level of the authenticated worker.

For example, in FIG. 3, if the priority of the operation level is 'level_1> level_2> level_3', and the worker A connects to the operation level of level_2 and the worker B connects to the operation level of level_1, the worker having the highest operation level is assigned to B. do.

The operation level may be set to be unique for all worker authentication information, but a situation may arise where two or more workers have the same operation level.

For example, in a situation where the number of workers is greater than the set operation level, the operator decides the operation level directly, or when several workers share the same authentication information, the operation level corresponding to two or more worker authentication information is the same. can do.

In this case, the operation level checking unit 23 may determine an operator having the highest operation level in various ways. As one example, when the operator's operation level is the same, the first connected operator may be determined as the worker having the highest operation level.

The HMI system 20 processes such that only the operator having the highest operation level among the currently connected workers can operate the controlled device 11.

Referring to FIG. 4, when the operator attempts to operate the controlled device 11 (S41), if the worker has the highest operating level, the HMI system 20 operates on the controlled device 11. (S42, S43), but if the worker is not the worker with the highest operation level, the operation to the control target device 11 is not allowed (S42, S44).

That is, the operator who does not have the highest operation level is blocked from being able to operate the control target device.

Since the operator who has the highest operation level and operates the control target device 11 can also be deprived of the highest authority after the operator having a higher operation level is connected, the control target device 11 can no longer be operated. .

The HMI system 20 can be configured in various ways to block an operator who does not have the highest operating level from operating the controlled device.

For example, the input of an operation command from an operator who does not have the highest authority in the HMI program itself which displays the HMI screen on the HMI system or the remote terminal can be blocked. In this case, you can inform the operator by deactivating the operation command input function on the HMI screen.

However, since the main reason for allowing only the operator with the highest operation level to operate the controlled device 11 is due to the synchronization problem, any operation that does not cause the synchronization problem may be allowed by any authorized worker. .

For example, the operator who does not have the highest operation level among the authorized operators can be allowed to query the HMI screen for the information of the control target device 11. Operators who do not have the highest level of operation can then monitor the screen to see what they need, such as emergencies or alarms.

5, a specific embodiment of the HMI system 20 and the remote terminal 15 will be described.

The management information storage unit 21, the authentication processing unit 22, and the operation level checking unit 23 of the HMI system 20 allow only authorized personnel to access the HMI system 20 as described above. The operation level of the connected workers is checked to determine the worker having the highest operation level.

The device control unit 24 of the HMI system 20 communicates with the control target device 11 to transmit an operation command, and calculates data received from the control target device 11.

The screen display unit 26 of the HMI system 20 displays the state, data value, and the like of the control target device 11 on the HMI screen. The operator may operate or monitor the control target device 11 by manipulating the HMI screen through the input unit 25 such as a touch screen.

The communication server 27 of the HMI system 20 communicates with the communication client 51 of the connected remote terminal 15 to transmit and synchronize data with an HMI program for providing an HMI screen. That is, the remote terminal 15 transmits necessary programs and data in order to use the same screen as the HMI screen of the HMI system 20, and synchronizes to maintain the same state.

The communication client 51 of the remote terminal 15 communicates with the communication server 27, and the screen display unit 52 displays the state or data of the control target device 11 and operates the control target device 11. Displays the HMI screen that allows you to

Commands input through the input unit 53 of the remote terminal 15 such as a mouse, a keyboard, and a touch screen are transmitted to the communication server 27 through the communication client 51, and the HMI system 20 is connected to the remote terminal 15. The command received from the processor is processed in the same manner as the command input through the HMI screen of the HMI system 20 itself.

Since the remote terminal 15 communicates with the HMI system 20, it is possible to determine whether the corresponding operator is an operator having the highest operation level, and so that only an operator having the highest operation level can operate the controlled device. Can be processed.

For example, the HMI system 20 may inform the remote terminal 15 whether the operator connected from the remote terminal 15 is the worker having the highest operation level, and the remote terminal 15 according to the information. Can allow or block the operation of the controlled device.

Referring to FIG. 6, an example of a process in which the remote terminal 15 and the HMI system 20 interoperate with each other will be described.

The remote terminal 15 transmits the ID and password input by the operator to the HMI system 20 and requests a connection (S60-1, S60-2). At this time, the ID and password of the worker may be set in advance.

The HMI system 20 checks whether the received ID and password are already registered to determine whether the connection is a valid connection (S60-3), and in the case of a valid connection, transmits the currently running HMI program to the remote terminal 15. (S60-4).

The remote terminal 15 receives the HMI program from the HMI system 20 (S60-5), synchronizes data with the HMI system 20 (S60-6, S60-7), and then displays the HMI screen. It displays (S60-8).

On the other hand, the remote terminal 15 transmits the ID and password of the worker to the HMI system 20 when the operator wants to operate the control target device through the HMI screen (S60-9). In this case, when the operator determines the operation level, the operation level is transmitted.

The HMI system 20 compares the operation level of the worker who is connected from the remote terminal 15 with the operation level of another worker who is currently connected to determine whether the worker who is connected from the remote terminal 15 has the highest operation level. (S60-10).

As a result of the determination, when the worker connected from the remote terminal 15 has the highest operation level, the remote terminal 15 is notified that there is an operation right, and thus the remote terminal 15 obtains the operation right of the worker. (S60-11).

If the worker who is connected from the remote terminal 15 has the highest operation level and is changed to not having the highest operation level due to the connection of another worker, the operation authority is recovered.

When the operation authority is acquired at the remote terminal 15, the operation and transmission of the operation instruction made from the remote terminal 15 (S60-12), the corresponding operation instruction execution at the HMI system 20 (S60-13), the operation instruction Remote control between the remote terminal 15 and the HMI system 20 is performed such as data synchronization (S60-14, S60-15) and display of updated HMI screens (S60-16, S60-17) according to the execution. do.

When the operator finishes driving the HMI program at the remote terminal 15 (S60-18), all remote control procedures at the remote terminal 15 are terminated (S60-19), and the HMI system 20 is at the highest operating level. Update the worker with a (S60-20).

It is to be understood that the present invention is not limited to the above-described embodiment, and that various changes and modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. to be.

11: control target device 13: communication network
15: remote terminal 20: HMI system
21: management information storage unit 22: authentication processing unit
23: operation level check unit 24: device control unit
25: input unit 26: screen display unit
27: communication server 51: communication client
52: display unit 53: input unit

Claims (6)

In the HMI system having a remote control function connected to the control target device, providing an HMI screen for reading and displaying or operating the information of the control target device, and allowing a remote access of the operator,
A management information storage unit for storing operation level information and worker authentication information;
An authentication processing unit for authenticating the worker using the worker authentication information of the management information storage unit; And
An operation level checking unit for checking an operation level of a certified worker to determine an operator having the highest operation level,
An HMI system having a remote control function, wherein only an operator having the highest operation level among the currently connected workers can operate the control target device. The method according to claim 1,
The operation level information is set corresponding to the operator authentication information,
The operation level confirmation unit HMI system having a remote control function, characterized in that for confirming the operation level of the operator through the authentication information input by the operator. The method according to claim 1,
An operator is configured to input the operation level information,
The operation level confirmation unit HMI system having a remote control function, characterized in that for confirming the operation level through the operation level information input by the operator. The method according to claim 1,
The operation level checking unit, when the operation level of the currently connected operator is the same, firstly determines the connected operator as the operator having the highest operation level. The method according to claim 1,
HMI system having a remote control function, characterized in that for processing the information of the control target device can be viewed even if the operator does not have the highest level of operation of the authorized operator. 6. The method according to any one of claims 1 to 5,
And a communication server communicating with a communication client of a remote terminal to transmit and synchronize a program and data for providing the HMI screen.
KR1020120110700A 2012-10-05 2012-10-05 Human Machine Interface System with Remote Control Function KR101661378B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111312385A (en) * 2020-03-06 2020-06-19 西门子医疗系统有限公司 Processing device, method and system for controlling medical equipment
CN111326249A (en) * 2020-03-06 2020-06-23 西门子医疗系统有限公司 Processing device, user equipment and system for controlling medical equipment
KR102156919B1 (en) * 2019-12-27 2020-09-16 주식회사 다온에프앤이 Safe operation control system of plc-based target device and method thereof

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Publication number Priority date Publication date Assignee Title
KR960032579A (en) * 1995-02-20 1996-09-17 이노우에 아키라 Operating system of manufacturing apparatus
JP2003230186A (en) * 2002-02-05 2003-08-15 Canon Inc Remote operation system, its controlling method and program for realizing that controlling method
JP2007243523A (en) * 2006-03-08 2007-09-20 Meidensha Corp Remote monitoring and control system and remote monitoring and control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960032579A (en) * 1995-02-20 1996-09-17 이노우에 아키라 Operating system of manufacturing apparatus
JP2003230186A (en) * 2002-02-05 2003-08-15 Canon Inc Remote operation system, its controlling method and program for realizing that controlling method
JP2007243523A (en) * 2006-03-08 2007-09-20 Meidensha Corp Remote monitoring and control system and remote monitoring and control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102156919B1 (en) * 2019-12-27 2020-09-16 주식회사 다온에프앤이 Safe operation control system of plc-based target device and method thereof
CN111312385A (en) * 2020-03-06 2020-06-19 西门子医疗系统有限公司 Processing device, method and system for controlling medical equipment
CN111326249A (en) * 2020-03-06 2020-06-23 西门子医疗系统有限公司 Processing device, user equipment and system for controlling medical equipment

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