JPH11282524A - Operation support system based on warning generation situation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer an operation procedure to an operator according to the presence or absence of the warning of failure or the generated warning. SOLUTION: In this operation supporting system, the lighting state of a state display lamp 11 (mainly an alarm) is inputted by a digital video camera 1, and the generated warning is extracted by an image processor 2. The image processor 2 executes the processing of a difference between images fetched in a prescribed time interval for automatically checking the blinking state and continuous lighting state of warning. then, an operation procedure corresponding to the lighting warning is offered to an operator or a worker.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant status display device for displaying a process status of a plant, such as a water supply plant or an oil plant, in addition to a power plant that supplies electric power such as a nuclear power plant and a thermal power plant.

[0002]

2. Description of the Related Art In control of a plant, an alarm device for displaying an abnormality of the plant is installed above a control panel. Since this alarm device is a kind of indicator light, correct display cannot be performed when a failure such as a burnout of an internal light bulb occurs. For this reason, in order to confirm the failure of the entire alarm, a test to turn on the entire alarm is performed about once a day,
We are checking for out of ball. In this operation, the operator manually turns on all the alarms. In addition, this work is an important inspection work because not only does the operation procedure change if an alarm that is lit at the time of an abnormality or during a regular inspection causes an operation procedure to be changed, but also causes the operator to be confused.

Therefore, a status display device (Japanese Patent Laid-Open No. 9-190220)
Publication), a lighting state control device that controls the lighting state of an alarm, an image input device that captures an image by capturing the display state described above, an image processing device that processes the lighting state of the image, A failure can be detected by a state indicator lamp comparator for comparing the display state selected by processing with the lighting state control device and a display device for displaying an abnormality.

[0004] When an alarm occurs and an alarm occurs in a nuclear facility, the operator points to the illuminated alarm and then reads an instrument associated with the alarm to determine an operating procedure. When an alarm is turned on, the situation of the nuclear facility is determined not as an individual alarm but as an alarm lighting pattern. Then, after the abnormal situation has converged, the operator confirms the lit alarm and keeps a record.

[0005]

In the above conventional invention, a lighting state is obtained by comparing a signal (alarm lighting instruction) transmitted from a computer with a display state of an image. That is, this is a process of comparing the lit alarm with the test lighting command to confirm that they match.

That is, this is a process of comparing the lit alarm with the test lighting command to confirm that they match. For this reason, it is effective only when a lighting command is issued automatically or manually, and it can be used only for alarm testing.Therefore, when monitoring an alarm when a plant is abnormal, or when monitoring an alarm during regular inspection, it is effective. It is not possible to avoid a situation where the alarm does not light up.

At this time, when an alarm is generated, the operator performs an operation procedure corresponding to the generated alarm. If an alarm is generated when the plant is abnormal, and the alarm suddenly runs out of light, the alarm to be lit will not be lit, and the subsequent operation procedure may be changed. Although the displayed alarm window is enormous, the operator needs to memorize all the corresponding operation procedures, which is a burden on the operator.

Further, in the current plant, not all alarms are taken into the computer, but only about 20% of the alarms in the central control room are taken into the computer. In that case, a cable from the source of the alarm to the computer room is needed to take the alarm into the computer. The extraction source depends on the signal, but when laying the cable from the site, the number of days required for the construction is enormous.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and it is possible to provide an operating procedure to an operator from the presence or absence of a failure alarm and the generated alarm.

[0010]

An alarm occurrence state display device according to the present invention includes an image input device for photographing the state of a monitoring device, an image processing device for performing a difference process on a photographed image, and an alarm processing device for executing an image-processed alarm. An alarm name database for extracting an alarm name from coordinates is provided, and an operation procedure determination logic and an operation procedure database are provided for transmitting a necessary operation procedure from a generated alarm to an operator or a worker. .

(1) Even if the alarm indicator light fails, the presence or absence of the failure can be clarified by comparing the parameter value taken out by the digital video camera with the set value of the alarm.

(2) Modification can be realized at low cost to capture the alarm generation status off-line.

(3) Not only can the alarm and plant parameters displayed on the control panel be captured as an image, but also the operating procedure can be transmitted to the operator based on the displayed alarm and plant parameters.

(4) The operator can continue driving without worrying about whether or not the alarm has failed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(1) Embodiment when a Digital Video Camera is Used FIG. 1 is a block diagram showing an embodiment of the present invention.
In the configuration of the present invention, the digital video camera 1 inputs the lighting state of a status indicator 11 (hereinafter, referred to as an alarm because a main one is an alarm), and extracts an alarm generated by the image processing apparatus 2. In this image processing apparatus 2, in order to automatically check the blinking state and the continuous lighting state of the alarm,
A difference process is performed between images captured at predetermined time intervals.

Specifically, as shown in FIG. 2, an image PI in an initial state is fetched by processing. This image P1 is obtained by digitizing the color of the alarm window specified in advance. Next, after waiting for a predetermined time Δt (processing), the next image P
2 is imported (process). This image P2 is also obtained by digitizing the color of the warning window similarly to P1. In the processing, the above-described two-screen difference processing is performed (difference processing result P = | P2-
P1 |). A binarization process is performed on the difference processing result P at a predetermined threshold (process). In the binarization process, the alarm window is turned on, and when the color is white, the pixel is set to "1" and the total number of white pixels is calculated (process).

The recognition of the color of the alarm window is determined by the composition ratio of the colors. Therefore, in the case of white, it can be recognized as "white" when there are no red, blue and green components. If the number S of white pixels is smaller than the threshold value S0 in the process, it is determined that the warning window is not turned on, and the process returns. Also,
If the number S of white pixels is larger than the threshold value S0, it is determined that the alarm window is lit, and lighting is detected (process).

Further, the coordinates (coordinates) of the pixels are calculated from the coordinates of the lit alarm, and the coordinates are sent to the data extractor 3 in FIG. The coordinates here are extracted from the coordinates of the positions of all the alarm windows (the number of pixels counted from the corners of the alarm window). That is, if the number of pixels next to the leftmost alarm window is 150, it can be recognized that the coordinates from (0,0) to (0,150) are the leftmost alarm.
In this case, it is necessary to recognize the number of vertical pixels. Therefore, if the number of vertical pixels is 70, the number of pixels from (0, 0) to (70, 150) is included, including the number of horizontal pixels. The pixel can be recognized as a left corner alarm.

Further, the data extractor 3 extracts the alarm name from the coordinates of the lit alarm from the alarm name database 4 set in advance. Since the alarm name database 4 stores the corresponding alarm name along with the coordinates calculated from the pixels counted in advance,
The alarm name can be extracted from the alarm coordinates. The operating procedure of the illuminated alarm is determined by the operating procedure determination logic 5,
The operation procedure corresponding to the generated alarm is extracted from the operation procedure database 6 and displayed on the monitor 12 together with the alarm name.

FIG. 3 is a flowchart of the processing in the computer when the digital video camera 1 is used. The lit alarm is captured by the image processing device 2 via the digital video camera 1 (process a). The image processing device 2 detects an alarm that has occurred in the captured image in the flow shown in FIG. 2 and calculates the coordinates (process b).
At this time, the non-lighted alarm is transmitted to the non-lighted data extractor 8 after detecting non-lighted and detecting coordinates as shown in FIG.

The calculated alarm is extracted by the data extractor 3 from the alarm name database 4 in which the alarm coordinates and the alarm names are stored (process c). Along with the addition (process e), it is displayed on the monitor 12 (process f).

Further, based on the calculated alarm, the corresponding operating procedure is extracted (process d) from the operating procedure database 6 by the operating procedure determining logic 5, and the operating procedure corresponding to the generated alarm is displayed on the monitor 12. The operation procedure database 6 stores the coordinates of the alarm, the name of the alarm, and text data of the corresponding operation procedure.

In the unlikely event that a plant abnormality occurs and there is an alarm that is not turned on due to a failure such as a broken ball while the operator is responding, as shown in FIG. As for the alarm (the process in FIG. 2), the alarm name is extracted from the alarm name database 4 in the unlit data extractor (process g). At the same time, to compare with the alarm set value,
The corresponding set value is extracted from the digital parameter and the analog parameter fetched from the process computer (process h). The comparison is performed by the unlit data extractor (process k). Here, when the current value has reached the set value, it is determined that the indicator lamp of this alarm is out of order (process n), and a non-illuminated display is given (process f), and the alarm is generated. (Process e). Conversely, if the current numerical value has not reached the set value, the alarm data is discarded (process m).

In the same manner as in the case of the illuminated alarm, the operation procedure is extracted from the operation procedure database by the operation procedure determination logic (process d) based on the calculated alarm, and the operation procedure for the generated alarm is monitored. (Process f).

With this function, even if a failure such as a sudden burnout of the warning indicator occurs, the operation can be continued without causing the operator to make an erroneous determination.

If a plurality of alarms are simultaneously generated, displaying a plurality of operating procedures on the monitor may cause confusion for the operator. In this case, only the alarm list is displayed and the operation is performed. The operation procedure is displayed by manual input by a worker.

The operator can continue the operation while checking the list of generated alarms and the operation procedure.

(2) Embodiment Using a Collimator In FIG. 1, an embodiment using a digital video camera has been described. As a method for capturing the alarm occurrence status off-line, a collimator (telescope) as shown in FIG. ) 1
3 is available.

The collimator 13 scans the alarm window 11 with the mirror 14, receives only the lighted window by the light receiving element 15, and receives the lighting state of the alarm window via the amplifier 16.

The alarm window scanned by the collimator 13 is
As shown in FIG. 5, only the lit portion can be taken out. With this method, the lighting state is detected based on the position of the alarm (coordinates assigned in advance). From the pre-assigned coordinates, an alarm whose coordinates match that of the alarm name database 14 is extracted and displayed on the monitor 12. Even in this method, even when there is a failure such as a broken ball at the time of an abnormality, the processing can be performed in the same manner as the processing of (1).

The alarm extracted from the coordinates described above is used to extract a corresponding operation procedure from the operation procedure database by the operation procedure determination logic, and the operation procedure corresponding to the generated alarm is displayed on the monitor.

[0033]

Both of the above embodiments have the following effects by going offline.

(1) Even if the alarm indicator fails, the presence or absence of the failure can be clarified by comparing the parameter value extracted by the digital video camera with the set value of the alarm.

(2) Modification can be realized at low cost to take in the alarm occurrence status and plant parameters off-line.

(3) Not only can the alarm and plant parameters displayed on the control panel be captured as an image, but also the operating procedure can be transmitted to the operator based on the displayed alarm and plant parameters.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a driving support system based on an alarm occurrence state according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a processing operation of the image processing apparatus in FIG. 1;

FIG. 3 is a flowchart showing one processing operation in FIG. 1;

FIG. 4 is a flowchart showing one processing operation in FIG. 1;

FIG. 5 is a configuration diagram of a driving support system based on an alarm occurrence state according to an embodiment of the present invention.

FIG. 6 is a diagram of a method of taking out an alarm in FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Digital video camera, 2 ... Image processing apparatus, 3 ... Data extractor, 4 ... Alarm name database, 5 ... Operation procedure judgment logic, 6 ... Operation procedure database, 7 ... Occurrence alarm list, 8 ... Extraction data for non-lighting Device 9 digital parameter database 10 analog parameter database 11 alarm display window 12 monitor 13 collimator 14 mirror 15 light receiving element 16 amplifier amplifier processing operation of image processing device a to o: Processing contents of the present invention.

Claims (2)

[Claims] An image input device for photographing an alarm, an image processing device for processing a photographed image and distinguishing between an illuminated alarm and an unilluminated alarm, and an operator corresponding to the illuminated alarm A driving support system based on an alarm occurrence situation, which can be provided to a vehicle. 2. The driving support system according to claim 1, wherein said system can provide an operator or a worker with necessary procedures for driving or work from the photographed image of the process. .