JPH07182033A - History recording method - Google Patents

Abstract

PURPOSE:To record the history of setting changes due to an input device and to display what setting is performed by which input device as the need arises. CONSTITUTION:When the setting change is performed from an input device 13-1, a supervisory and controlling device 17 confirms whether data can be normally transmitted through a data way 16 to process controllers 14-1-14-n or not and stores the contents of a set value in a recording device 12 later. When any fault is generated at a process equipment and it is desired to recognize which input device changes the setting of the process equipment, the supervisory and controlling device 17 displays the setting change history of the input device 13-1, for example, on a display device 11 based on the stored data in the storage device 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process control system in a water treatment plant or the like, and more particularly to a history recording method for monitoring the status of each equipment and displaying the status of those equipment on a display device.

[0002]

2. Description of the Related Art FIG. 14 is a schematic block diagram of a system using a conventional history recording method. In FIG. 14, 1
Reference numeral 1 denotes a display device, which indicates the state of each device, for example, each device name,
Displays the date and time of monitoring and the status of the device at that date and time. A storage device 12 stores the state of each device, for example, in the order of measurement. 13-1 to 13-n are
An input device such as a keyboard for inputting data.
14-1 to 14-n are process controllers, 15-1
˜15-n are process devices, and these process devices 15-1 to 15-n are controlled by respective process controllers 14-1 to 14-n. Process equipment 15
-1 to 15-n is composed of, for example, a dehydrator or a pump,
The process controllers 14-1 to 14-n respectively control the process devices 15-1 to 15-n and monitor the states of the process devices 15-1 to 15-n at regular time intervals. Then, if the status of the device changes, check the status change of the device, and if there is a status change,
The state change is detected and output. Reference numeral 16 is a data way formed of a transmission line such as an optical fiber, 17 is a supervisory control device, and a plurality of process controllers 14-1 to 14-1.
The data transmitted from 4-n is stored in the storage device 12 every predetermined time. The measurement data stored in the recording device 12 are arranged, for example, in the order of earlier time to later time.

FIG. 15 is a diagram showing a display example of a display device by a conventional history recording method. In the figure, 70 is a display screen, 71 is a display area for numbers, 72 is a display area for showing dates and times in the order of elapsed time, 73 is a display area for process equipment names, and 74 is a display area for showing the status of those process equipments. , 75 are display areas showing the equipment classifications of these process equipments. This figure shows a display example of each process device when the "hypochlorite injection regulator" shows an abnormality.
For example, in “1” of the display area 71, the display area 72
Is "3.8 19:11" and the display area 73 is "No. 1".
Dehydrator mixer ", display area 74 is" stop ", display area 7
No. 5 of the equipment category L is "L" at 19:11 on March 8. 1 means that the dehydrator and the kneading machine have stopped.

Next, the operation of this conventional system will be described. Process devices 15-1 to 15-n such as a dehydrator, an admixer, and a chemical supply pump are controlled by process controllers 14-1 to 14-n. Then, the process controllers 14-1 to 14-n detect the states of these devices at regular time intervals, modulate this detection signal, and modulate and transmit it to the monitoring controller 17 via the data way 16. The monitor control device 17 demodulates the received data and stores the demodulated data in the storage device 14 in the order of data generation. Then, when there is an instruction from the input devices 13-1 to 13-n to display the status of any of the process devices 15-1 to 15-n, the data is read from the storage device 12, and the read data is in the format of FIG. It is displayed on the display device 11. In this way, the operator can view the history of the operation and failure of each process device when there is an abnormality in time series.

[0005]

Since the conventional history recording method is performed as described above, a change in the operating or stopping state of the process equipment and a change in the current of the process equipment,
Although it is possible to see a change in the number of revolutions, a change in status such as the content of a failure, for example, it is not possible to see what kind of setting change was made from which input device. That is, as a result of issuing an instruction to the process equipment,
Although it is possible to detect how the process equipment is controlled by the instruction, the history of what input device gave what kind of instruction to the process equipment is unknown. Therefore, when a failure occurs in the process equipment, it is difficult to analyze the failure.

The present invention has been made to solve the above problems, and an object thereof is to provide a history recording method capable of knowing what kind of input is made from which input device. To do.

[0007]

According to another aspect of the present invention, there is provided a history recording method, wherein in a system including an input device, a storage device and a display device, operation data input from the input device is stored in the storage device. Then, the setting change history for each input device based on the stored operation data is displayed on the display device.

A history recording method according to the invention of claim 2 is
The display device is an image device.

The history recording method according to the invention of claim 3 is
The above display device was used as a printing device.

A history recording method according to the invention of claim 4 is
The setting change history for each input device of the operation data stored in the storage device is displayed in real time.

A history recording method according to the invention of claim 5 is
The operation data stored in the storage device is recorded in a recording medium, and the setting change history of the recorded operation data for each data input device is displayed.

[0012]

The history recording method according to the invention of claim 1 is as follows.
The operation data input from the input device is stored in the storage device in time series for each input device. Then, the setting change history for each input device based on the stored operation data is displayed on the display device. In this way, it is possible to display on the display device what kind of setting has been changed from the input device. This display is useful for factor analysis when a failure occurs in process equipment.

In the history recording method according to the second aspect of the present invention, by using the display device as an image device, the setting change history is displayed on the screen of the image device.

According to the third aspect of the present invention, the history recording method prints the setting change history on the printing device by using the display device as the printing device.

In the history recording method according to the present invention, the setting change history for each input device of the operation data stored in the storage device is displayed on the image device or the printing device in real time, so that the setting change history is immediately displayed. I can confirm.

In the history recording method according to the present invention, the operation data stored in the storage device is recorded on a recording medium, and the setting change history of each input device of the recorded operation data is displayed on the display device. Then, the setting change history recorded in the recording medium is analyzed by a personal computer or the like as needed, and the analysis result is used for failure analysis or the like.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. Example 1. 1 is a block diagram showing the outline of a system in which a history recording method according to a first embodiment of the present invention is used. In addition,
In FIG. 1, parts having the same functions as those of the conventional example are shown in FIG.
The same reference numerals are given. In FIG. 1, the monitor control device 17 includes a redisplay means 17a and a data storage means 17b. The data storage means 17b is the input device 13-1.
The data input from 13 to 13-n are stored in the recording device 12. The data stored in the recording device 12 includes, for example, the numbers of the respective input devices 13-1 to 13-n, the time when the set value is changed by this input device, the set value item name, the data before the setting, and the new data. The set data and the like. The redisplay unit 17a displays the history data stored in the storage device 12 when there is a display instruction from the user via the input devices 13-1 to 13-n.

FIG. 2 is a diagram showing a data structure of history data in the storage device of the system of FIG. In FIG. 2, reference numeral 20 is history data of the input device, 21 is a 1-word storage area consisting of 16 bits, and the total number of history data is stored therein. Reference numeral 22 is a storage area for a plurality of history data each consisting of 84 words, and this storage area 22 can store n pieces of history data. FIG. 3 is a diagram showing in detail the data structure of the history data of FIG. In FIG. 3, JD is an area of occurrence time, and includes year, month, day, hour,
Minute data is stored. GN is a screen name area, and when there are many screens on the display device, the name of each screen is entered. Further, in the area GN of this screen name, for example, a comment at the time of creating the segment file is input. HM
Is a change data area, and the name of the data whose setting value is to be changed is input. For example, when changing the set value of the pump pumping amount, a code indicating the pump pumping amount is input to the HM area. DT1 is an area for inputting the setting value data after the setting change, and DT2 is an area for inputting the setting value data before the setting change. ND No. Is an area for inputting the node number or station name of the operated node. That is, if the station name corresponding to the node number is registered in the system configuration definition screen,
If this station name is not registered, the node number is displayed. CRT No. Is an area in which the number of the operated CRT is input, and TI is an area in which the unit of data before setting change or data after setting change is input. For example, the current value is “ampere (A)”, and the voltage value is “volt (V)”.

FIG. 4 shows a display example displayed on the display device of the system shown in FIG. 71 is a screen, 30 is a display area for numbers indicating the order, 31 is a display area for year, month, day, and hour,
32 is a display area of the name of the process equipment, 33 is a display area of the state of the process equipment, 34 is a display area of the setting data after the setting change, and 35 is a display area of the setting data before the setting change. Reference numeral 37 is a display area of the process equipment division. In the history recording method according to the first embodiment, the setting change history due to the setting change of the input device is displayed in the same display area 33 as the display area 33 of the state of the process device before the setting change (the previous time in the display area 34). The value) and the setting data after the setting change (the current value in the display area 35) are displayed side by side. That is, for example, in this display example, 7 in the display area is displayed.
Secondly, it indicates that at 19:11 on March 8, 1991, the input device C performed history data in which the display upper limit of the daily load curve was changed from 1000 kW to 2000 kW.

FIG. 5 is a flow chart showing the processing by the history recording method of the first embodiment. Next, this Example 1
The operation of the system based on the history data will be described with reference to FIG. In FIG. 1, the data storage means 17b of the monitor control device 17 determines whether or not the setting value is changed by the input device 13-1, for example (step S10),
For example, if there is a change in the set value to the process controller 14-1 (YES in step S10), the set value is transferred to the process controller 14 via the data way 16.
When it is transmitted to [1] (step S11) and the set value is not changed (NO in step S10), the process of step S10 is repeated. The data storage means 17b confirms the data transmission of the set value change to the process controller 14-1 (step S12), and thereafter, the set value change data, that is, the history data of the input device 13-1 is displayed in the storage device 12. 2. The data structure is stored as shown in FIG. 3 (step S13). Next, the redisplay means 17a operates the input device 13-
It is judged whether there is a redisplay request from 1 to 13-n (step S14), and if there is a redisplay request (step S14).
14 is YES), the history data is read from the recording device 12 to the display memory of the monitoring control device 17 (step S1).
5), display on the display device 11 in a format as shown in FIG. If there is no redisplay request (N in step S14)
O), the process returns to step S10.

Example 2. FIG. 6 is a block diagram showing the outline of a system in which the history recording method according to the second embodiment of the present invention is used.
FIG. 7 is a diagram showing an example of printing by the printer of the system of FIG. 6, and FIG. 8 is a diagram illustrating processing by the history recording method of this embodiment. In FIG. 16, reference numeral 40 is a printing device such as a printer. The monitor control device 17 has a reprinting means 17c so that the data of the setting change history in the input device is printed on the printing device instead of being displayed on the image device as in the first embodiment. In FIG. 7, 42 is a print sheet, 43 is a print area for year, month, day, time, etc., 44 is a print area for the name of the process equipment, 45 is a print area for printing the state of the process equipment, and 46 is this time. Is a print area of the set value, 47 is a print area of the previous set value, and 48 is a print area of the failure content. In the second embodiment, in the print area 43 of the history data, “April 1, 1991, 11:55”.
, Year, month, day, and time, the print area 44 is the name of the process equipment of “reservoir process control pump pumping amount 2”, the print area 46 is the current set value “46”, and the print area 47 is the previous set value. “Misfailure recovery” is printed in the printing area 48 with “00” and the unit of cubic meter per hour. Next, the operation of the system according to the history recording method of the second embodiment will be described. The processing of steps S10 to S13 of FIG.
The processing is the same. That is, the setting change history data in the input device is stored in the recording device 12 (steps S10 to S13). Next, the reprinting unit 17c determines whether or not there is a redisplay request from the input devices 13-1 to 13-n (step S24), and if there is a redisplay request (YES in step S24), the printing device. The history data is read from the recording device 12 to the printing memory in the 40 (step S2
5), printing is performed on the printing device 40 in the format shown in FIG. 7 (step S20). If there is no redisplay request, the process returns to step S10.

Example 3. FIG. 9 is a block diagram showing the outline of a system in which the history recording method according to the third embodiment of the present invention is used.
FIG. 10 is a diagram showing a display example of the display device of the system of FIG.
FIG. 11 is a flow chart for explaining the processing by the history recording method of this embodiment. In the third embodiment, as shown in FIG. 9, the monitoring control device 17 is provided with a real-time printing / display means 17d so that the setting change history data of the input device is displayed or printed in real time. The setting change history data is displayed in real time on the display screen of the display device 11, for example. Or, in real time, the printing device 4
Print at 0. In the display screen 50 of FIG. 10, the setting change history data is displayed in the display areas 51 to 53. In FIG. 10, the setting change history data is obtained in step S10.
Is stored in the recording device 12 in steps S12 to S12. The real-time printing / display means 17d stores the data of the setting change history in the monitor control device 17 (step S33), and the input device 1
When real-time printing and display are requested from 3-1 to 13-n (step S34), it is displayed on the CRT of the display device 11 in real time, or the printing device 40 prints on paper in real time (step S35, S36).

Example 4. FIG. 12 is a block diagram showing the outline of a system in which the history recording method according to the fourth embodiment of the present invention is used, and FIG. In FIG. 12, 50 is a general-purpose personal computer and 55 is a floppy disk (FD). The monitoring controller 17 includes a general format FD transfer means 17e. In the fourth embodiment, the general format FD transfer means 17e causes the step S to be executed.
The setting change history data is stored in the storage circuit 12 in the processes of 10 to S13. Next, the general-purpose format FD transfer means 17e determines whether or not there is an instruction to transfer from the input device to the floppy disk (FD) (step S44).
If there is no instruction (NO in step S44), step S
Returning to the processing of 10, if there is an instruction (Y in step S44)
ES), the recording device 1 for the data of the designated setting change history
The designated data is collected from 2 and converted into a format (step S45), and the converted data is transferred to the floppy disk (FD) 55 (step S46). As described above, by providing the general-purpose format FD transfer means 17e in the monitor control device 17, the data accumulated in the recording device 12 is recorded in the floppy disk 55. And
It is displayed on the CRT of the general-purpose personal computer 50 or printed by the printing device 40. By doing so, by transferring the data in the text format to the general-purpose personal computer 50, the data of the setting change history can be edited and saved using a wide range of general-purpose software. It can also be used as operation data for maintenance and management of plants and the like.

[0024]

According to the present invention, the operation data input from the data input device is stored in the storage device, and the setting change history for each data input device based on the stored operation data is displayed on the display device. In this case, when a failure occurs in the process equipment, the cause of the failure can be easily analyzed.

According to the invention of claim 2, since the display device is an image device, the setting change history can be displayed and confirmed on the screen.

According to the third aspect of the invention, since the display device is a printing device, the setting change history can be printed on paper and stored for a long period of time, and can also be stored and stored as statistical failure analysis data.

According to the invention of claim 4, the setting change history of the operation data stored in the storage device for each data input device is displayed in real time. You can refer to the setting change history.

According to the invention of claim 5, the operation data stored in the storage device is recorded on a recording medium, and the recorded operation setting change history of each data input device is displayed on the display device. Therefore, it can be saved or utilized as past failure factor data. In addition, it can be stored as data for statistical failure analysis.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an outline of a system in which a history recording method according to a first embodiment of the present invention is used.

FIG. 2 is a diagram showing a data structure of history data in the system storage device of FIG.

FIG. 3 is a diagram showing a detailed data structure of history data of FIG.

FIG. 4 is a diagram showing a display example of the display device of FIG.

FIG. 5 is a flowchart illustrating processing by the history recording method according to the first embodiment.

FIG. 6 is a configuration diagram showing an outline of a system in which a history recording method according to a second embodiment of the present invention is used.

FIG. 7 is a diagram showing an example of printing by the printer of FIG.

FIG. 8 is a flowchart illustrating a process according to the history recording method of the second embodiment.

FIG. 9 is a configuration diagram showing an outline of a system in which a history recording method of Example 3 of the present invention is used.

10 is a diagram showing a display example of the display device of FIG.

FIG. 11 is a flowchart illustrating a process according to the history recording method of the third embodiment.

FIG. 12 is a configuration diagram showing an outline of a system in which a history recording method of Example 4 of the present invention is used.

FIG. 13 is a flowchart illustrating a process according to the history recording method of the fourth embodiment.

FIG. 14 is a configuration diagram showing an outline of a system in which a conventional history recording method is used.

FIG. 15 is a diagram showing a display example of a screen according to a conventional history recording method.

[Explanation of symbols]

 11 Display Device 12 Storage Device 13-1 to 13-n Input Device 14-1 to 14-n Process Controller 15-1 to 15-n Process Equipment 16 Data Way 17 Monitoring and Control Device 17a Redisplay Means 17b Data Storage Means 17c Re Printing means 17d Real-time printing / display means 17e General-purpose format FD transfer means 40 Printing device

Claims (5)

[Claims] 1. A process in which normal state data to a process device that has undergone an operation such as setting change with an input device and abnormal state data from the process device are stored in a storage device, and the stored data is displayed on a display device. In a monitoring control device for monitoring the state of equipment, operation data input from the input device is stored in the storage device, and a setting change history for each input device based on the stored operation data is displayed on the display device. History recording method. 2. The history recording method according to claim 1, wherein the display device is an image device. 3. The history recording method according to claim 1, wherein the display device is a printing device. 4. The history recording method according to claim 1, wherein a setting change history of the operation data stored in the storage device for each input device is displayed in real time. 5. The history record according to claim 2, wherein the operation data stored in the storage device is recorded on a recording medium, and a setting change history of the input operation device of the recorded operation data is displayed. Method.