JPH0320833A - Fault tolerant human interface device - Google Patents

Abstract

PURPOSE:To improve real-time property by monitoring human interface control parts(H/I control parts) mutually via a connected network, and recovering a normal H/I control part when abnormality occurs. CONSTITUTION:Abnormality detection modules 2-1, 5-1 transfer information mutually with the same module 2-1(5-1) on another H/I control part 2(5) at a constant interval via the network 7. Also, a picture is received and preserved as the information at every switching of the screen to identify the picture being displayed on another CRT display part 3(6). When the transfer of the information is interrupted for constant time, it is judged that the abnormality occurs in another H/I control part 2(5), and fault tolerant modules 2-3, 5-3 display the picture after compressing on a normal CRT display part 3(6) when the present picture of another CRT display part 3(6) needs backup.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a human interface device (hereinafter abbreviated as H/I device) using a CRT in an equipment control system.

"Prior Art" Conventionally, a plurality of H/I devices are installed, but the functions that can be executed by each H/I device are fixed individually. If an abnormality occurs in one H/I device under such circumstances, the abnormality is only detected, and the operations performed using the abnormal H/I device are stopped at that point.

"Problem to be solved by the invention" It is good that if an abnormality occurs during operation, the abnormality is detected, but the operation, etc. being performed on the abnormal H/I device is stopped at that point. , continuity of operations could not be guaranteed.

Therefore, in order to continue (continuous) operation, normal H/
It is necessary to move from the already displayed screen to the relevant screen using the I device and perform the operation from the beginning again, which is difficult to operate and causes operational errors. Gender was an issue.

"Means for Solving the Problems" The present invention solves these drawbacks, eliminates unnecessary operations, improves real-time performance, and provides H/I that is easier to use than the current situation.
The purpose is to realize a device that monitors each other via a network that connects each human interface control unit (hereinafter abbreviated as H/I control unit), and if an abnormality occurs, it will be returned to normal H/I control unit. /I This is realized by the control unit recovering.

"Operation" The abnormality detection module exchanges information with the same module on another H/I control unit at regular intervals via the network. Note that in order to identify screens displayed on other CRT display sections, information is received and stored internally each time the screen is switched. If the exchange of this information is delayed for a certain period of time, the other H/I control unit is determined to be abnormal, and if the current screen of the other CRT display unit requires backup, the fault-tolerant module determines that the other H/I control unit is abnormal.
The relevant screen is reduced and displayed on the normal CRT display section.

``Example'' Next, an example of the present invention will be described with reference to FIG. 91.
．． 4 is the keyboard. Input device section such as mouse, light ben, etc., 2.5 is H that has multiple modules that perform processing.
/I control unit, 2-1. 5-1 is an abnormality detection module, 2-2, which detects abnormality in other H/I control units 5, 2, respectively.
．． 5-2 is an operation control module that processes data input from the abnormality detection module 2-1.5-1 and the input device section 1.4, and 2-3.5-3 is a fault-tolerant module that operates only when an abnormality occurs. The fault-tolerant processing module 3.6 that performs processing is based on the data sent from the opcon module 2-2.5-2 during normal times and from the fault-tolerant processing module 2-3.5-3 when an abnormality is detected. CRT display unit 7 displays multiple H/
A network connecting the I control unit 2.5, 8 is a network connecting multiple H/
This is an H/manufacturing device equipped with an I control section 2.5. In addition, A is the flow of data via the network 7 between the H/I control units 2 and 5, and B is the abnormality detection module 2-1 when an abnormality is detected.
．． 5-1 to the opcon module 2-2.5-2, C is the opcon module 2-2.5-2 at the time of an abnormality.
5-2 to fault tolerant processing module 2-3
．． 5-3, D is the fault tolerant processing module 2-3.5-3 to the CRT display 3.6.
data flow to, E is opcon module 2-2.5
-2 to the CRT display section 3.6 during normal operation.

Next, the operation will be explained. When the H/I control section 2.5 is operating normally, the result of the human operation is sent to the opcon module 2-2.5-2 in the H/I control section 2.5 via the input device section L4. Directly from the CRT display section 3.6
The data E is sent to and displayed respectively.

On the network 7, data A is constantly transmitted and received between the H/I control units 2 and 5 at regular intervals, and they mutually monitor each other for abnormalities. Here, if the data A from the H/I control unit 5 is not received by the H/I control unit 2 for a certain interval or more, the abnormality detection module 2-1 in the H/I control unit 2 The /I control unit 5 determines that there is an abnormality and notifies the operational computer module 2-2 of this abnormal situation using data B.

The opcon module 2-2 grasps the contents of the data B, processes the data B, and notifies the fault-tolerant processing module 2-3 of the data C, which performs processing in the event of an abnormality. In the fault tolerant processing module 2-3,
It is determined whether the screen displayed on the CRT display section 6 is a screen that requires backup, and if it is a necessary screen, data D is notified to the CRT display section 3, and the data D is sent to the CRT display section 3.
A reduced version of the screen is displayed on the display unit 3.

"Effects of the Invention" As explained above, the automatic screen display, which is a backup function in the event of an abnormality in the H/I control unit of the present invention, facilitates operation and minimizes the impact of abnormalities on business operations. be able to.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining one embodiment of the present invention. In the figure, 1, 4: Input device section 2.5: H/I control section 2-1.5-1: Abnormality detection module 2-2.5-
2: Obecon module 2-3.5-3:
Fault-tolerant processing module 3.6: CRT display unit 7: Network 8: H/I device A: H/]: Data flow between control units B: Data flow when an error occurs C: Backup screen creation or command Data flow D: Data flow of screen display during abnormal times E: Data flow of screen display during normal times.

Claims (1)

[Claims] In a human interface device comprising a plurality of human interface control sections each having an opcon module that performs processing associated with data input from an input device section, each of the plurality of human interface control sections has a plurality of human interface control sections each having an opcon module below the opcon module. , an abnormality detection module that detects an abnormality in the other human interface control unit, and a fault tolerant module that performs fault tolerance processing when an abnormality occurs, and the plurality of human interface control units are connected via a network. A fault-tolerant human interface device featuring: