JP2006301910A - Failure operation history display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a failure operation history display method for enabling an operator to quickly understand the cause of failure and easily respond thereto. <P>SOLUTION: The failure operation history display method is provided with a history file 105 for storing history data of a failure or the like; a history registration processing part 102 for receiving contact point information 201 from a PLC 200 or equipment 300 and definition information for operation, manipulation, failure or the like to be registered in the history file; and a failure display processing part 111 for displaying the output of the history registration processing part, detects and analyzes the failure. A warning information processing part 110 is provided for automatically extracting warning information such as an operation of the equipment or an operator manipulation relevant to the failure generated in a prescribed period before the failure occurrence, which is regarded as a warning period of the failure, to extract information similar thereto for display. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a failure operation history display system having a support function for failure recovery and analysis.

A conventional failure operation history display method is shown in FIG. In the figure, 100 is a personal computer, 200 is a PLC, and 300 is a device. The personal computer 100 includes a history registration processing unit 102, a failure display processing unit 104, and a history file 105 that stores history of operations / operations / failures. The PLC 200 has contact information 201. Reference numeral 101 denotes a definition information file in which operations / operations / failures are defined and stored.
The contact information 201 of the PLC 200 is a result of calculating operation information, failure information, operator operation information, and the like received from the device 300 by means of communication and the like, and control information related to the operation of the device 300 inside the PLC 200. The contact information 201 is periodically received by means such as communication. The definition information file 101 stores data giving significance to each BIT position of the contact information 201 and its ON / OFF change, for example, equipment name, device name, status information, and the like.
The history registration processing unit 102 checks the change of the contact information 201 at regular intervals. For example, the first contact changes to ON, and in the definition information file 101, the equipment name = pump equipment, equipment name = No. 1 If the drainage pump is defined as state = overload, add the time of occurrence to the history file 105 and register "2004/10/17 10:00:00 Pumping Equipment No.1 drainage pump overload". Is. The interrupt signal 103 activates the failure display processing unit 104 when the history registration processing 102 registers in the history file 105. As shown in FIG. 5, the failure display process 104 receives the interrupt signal 103 and displays the contents of the history file 105, that is, the history of the failure operation. In the status column 401 of the failure operation history display column 400 of FIG.
In addition, as another method for displaying a failure history, a data display method including a history management unit that manages a user information search history is disclosed (for example, see Patent Document 1).
JP 2000-99532 A (FIG. 5)

However, the conventional fault operation history display does not utilize the precursor information related to the operation of the operator and the operation of the equipment before the occurrence of the fault, which is one of the causes of the fault occurrence, and the support function for fault recovery and analysis As it was insufficient.
Therefore, the present invention has been made in view of such problems, and an object thereof is to provide a failure operation history display system that can quickly understand the cause of failure and easily cope with it.

In order to solve the above problems, the present invention is configured as follows.
According to the first aspect of the present invention, a history storage file for storing history data such as failure, a history for taking in contact information from a PLC or equipment and definition information such as operation / operation / failure, and performing registration processing in the history file In a failure operation history display system that includes a registration processing unit and a failure display processing unit that performs display processing of the output of the history registration processing unit to detect and analyze a failure, a certain period before the occurrence of the failure is regarded as a precursor period of the failure. Thus, the precursor information such as the operation of the equipment and the operator operation related to the failure that occurred during this period is automatically extracted, and information similar to the automatically extracted precursor information is extracted from the history file by the precursor information processing unit. It is to be displayed.
The invention described in claim 2 is a failure in which the precursor information processing unit stores a precursor information display processing unit that performs processing for displaying the precursor information, a failure description registered at the time of a past failure, and information on a countermeasure. The file includes an explanation / handling method file and an input unit for inputting information on the fault explanation and the handling method.
According to a third aspect of the present invention, when the precursor information processing unit does not have the precursor information, the failure is estimated to be a transient failure.
According to a fourth aspect of the present invention, when the precursor information exists and there is no past similar failure operation history data, input of information on the failure explanation / handling method is prompted.

  According to the present invention, failure explanations and countermeasures corresponding to similar failures are registered and guidance can be displayed, so that the cause of failure can be quickly understood and easily dealt with. Moreover, since the cause of failure such as device failure, operator operation error, and device control software failure can be stratified, the facility management level is improved.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a failure operation history display method of the present invention. In the figure, 110 is a precursor information processing unit, 111 is a precursor information display processing unit, 112 is a failure explanation / handling method file, and 113 is an input unit. Other reference numerals have the same functions as those in the prior art, and thus description thereof is omitted.
The history registration processing unit 102 checks the change of the contact information 201 at regular intervals as in the past, and for example, the first contact is changed to ON, and in the definition information file 101, the equipment name = pump equipment, equipment If name = No.1 drainage pump, state = overload, add the time of occurrence to history file 107, and "2004/10/17 10:00:00 Pumping equipment No.1 drainage pump overload “” ”Is registered. Here, the last “” indicates that a link to a failure explanation / coping method described later is empty.
The interrupt signal 103 activates the failure display processing unit 104 when the history registration processing 102 registers in the history file 105. As shown in FIG. 2, the failure display processing 104 receives the interrupt signal 103 and displays the contents of the history file 105 and the history of the failure operation. In the screen display of FIG. 2, in addition to the failure operation history display column 400, a similar failure pattern display column 500 and an explanation display column 600 in which failure explanations and countermeasures are described are provided.
Next, the operation of this embodiment will be described with reference to FIG.
FIG. 3 is a flowchart showing the flow of processing of the precursor information processing unit 110.
(1) When a failure occurs, the precursor information display processing unit 111 checks for the presence of precursor information (ST1). This is based on the failure occurrence time and searches for history data related to the system operation and the operator's operation within a certain past time, for example, 1 minute.
(2) If it is determined that there is no history data, the process ends as it is, but if it is determined that there is precursor information, the history file 105 is searched to check whether there is a similar precursor pattern (ST2). . When there is no precursor information, it is estimated that it is a transient failure.
(3) If it is determined that there is a similar precursor pattern, it is checked whether the link 105a to the failure explanation / handling method file 112 is registered (ST3). Here, the precursor pattern refers to one piece of failure information and one or more “system operation and operator operation information that have occurred within a certain period in the past”.
(4) If there is a link and a failure description / handling method is registered, the previous failure information 501 of the similar failure pattern and the failure description and handling information in the comment field 600 are displayed (ST4), and the process ends. In addition, when there are a plurality of precursor patterns for a failure, since the correlation between the precursor and the failure is strong, the number of precursor patterns is displayed as the number of information matching patterns indicating the strength of the correlation.
(5) When it is determined that there is no similar precursor pattern in ST2 in the above item (2) and it is a new pattern, or a known pattern in ST3 in the above item (3). If there is no failure, the cause of the failure is analyzed, and after failure recovery, the failure explanation and countermeasure are input in preparation for the next occurrence of the same failure (ST5, ST6). Further, a link 105a is established from the corresponding failure to the failure explanation / handling method.
By using such means, it is possible to quickly understand the cause of the failure and easily deal with it.

The block diagram which shows the failure operation history display system of this invention Screen showing a display example of failure operation history of the present invention The flowchart which shows the precursor information processing part of this invention Block diagram showing conventional fault operation history display method Example screen showing an example of conventional fault operation history display

Explanation of symbols

100 PC 101 Definition information file (operation / operation / failure)
102 History Registration Processing Unit 103 Interrupt Signal 104 Fault Display Processing Unit 105 History File 110 Precursor Information Processing Unit 111 Precursor Information Display Processing Unit 112 Fault Description / Corrective Action File File 113 Input Unit 200 PLC
201 Contact information 300 Device

Claims (4)

A history file for storing history data such as failures, a history registration processing section for taking in contact information from PLCs and devices and definition information such as operation / operation / failure, and performing registration processing in the history file; and the history registration processing In the fault operation history display system that performs fault detection and analysis with a fault display processing unit that performs display processing of the output of the unit,
Taking a certain period before failure as a precursor period of failure, automatically extracting precursor information such as device operation and operator operation related to the failure that occurred within this period, and information similar to the automatically extracted precursor information The failure operation history display system, wherein the warning information is extracted from the history file and displayed by the precursor information processing unit.   The precursor information processing unit includes a precursor information display processing unit that performs processing for displaying the precursor information, a failure explanation and a countermeasure method file that stores information on a failure explanation and a countermeasure method registered at the time of a past failure, 2. The fault operation history display system according to claim 1, further comprising an input unit for inputting fault description and coping information.   2. The fault operation history display method according to claim 1, wherein the precursor information processing unit estimates that the fault is a transient fault when there is no precursor information.   3. The fault operation history display system according to claim 2, wherein when the precursor information exists and there is no past fault operation history data, prompting the user to input information on the fault explanation and coping method.

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