JP2656401B2 - Plant history data recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant history data recording device suitable for recording plant history data on a storage medium.

[0002]

2. Description of the Related Art Plant history data (hereinafter referred to as "history data") includes, for example, analog data such as temperature and pressure and contact data such as valves and switches as plant operation state data. Thousands of these data are generated continuously over time. In addition, there are operation result data summarizing the operation contents of the plant, for example, logging data and operation analysis data obtained by analyzing the performance and efficiency of the plant. Furthermore, the operation result data and the analysis data may be completed by manually correcting the data after the data is created, or may be finalized by performing a final calculation after the analysis parameters are prepared. For example, in a coal-fired power plant, a fuel component value that affects efficiency requires about 10 days for component analysis. That is, even if data for one month is created at the end of the month, the analysis result using the fuel component and the manual correction may be completed and recorded on the storage medium on the 10th of the next month in some cases. In addition, the analysis result data is important data that indicates the performance and efficiency of the plant, so it takes a long time to confirm the validity and validity, and the data is formally recorded on the storage medium for one or two months. May be later.

Incidentally, storage media for storing these history data are sequentially replaceable such as cassettes and cartridges having a large storage capacity capable of storing the above-described history data in about several tens of days to several months. A storage medium in the form is used. Conventionally, when such history data is managed on a storage medium, the storage medium is replaced with a new storage medium when the storage medium is full, and stored in this storage medium. In this case, generally, a recording period management (hereinafter referred to as “period management”) is performed to determine when to record the history data in each storage medium from when to when.
Then, when the date in the period management is reached, the operator exchanges the storage medium and manages the period.

[0004]

However, the above-mentioned conventional recording apparatus for history data has the following problems. Generally, management of plant operation and operation is performed on a monthly, yearly, or yearly basis. However, in the case of artificial storage medium period management, the work of replacing a storage medium may be delayed. Therefore, the history data of the intended date and time may not be recorded on the intended storage medium. That is, when all the history data is to be stored in the storage medium, as shown in FIGS. 7A and 7B, the date and time of the history data in the storage medium (n) and the storage medium (n + 1) are not necessarily in chronological order. However, the data times are stored in random order. Here, the storage medium (n) shown in FIG. 7A is from October 1, 1989 to December 1989.
It is intended to record history data up to the 31st of the month. The storage medium (n + 1) shown in FIG.
It is intended to record history data from January 1, 1990 to March 31, 1990. However, the operation result data, the analysis data, and the like may be manually corrected after the data is created, or may be calculated after the analysis parameters have been prepared, to complete the data. For this reason, FIG.
As shown in (b), history data other than the intended period is also stored in the same storage medium.

Further, in the above-mentioned operation result data and operation analysis data, since the data date and the recording date are different, it is necessary to replace the storage medium every time the history data is completed. However, since it is practically difficult to frequently change the storage medium, it is a fact that the storage medium is not actually managed for such history data. Therefore, the history data of the period that should have been recorded on the storage medium is not recorded, or the history data of the period that should not be recorded is recorded. As a result, it is unclear which storage medium is included in the recording medium when it is taken out from the storage medium and used, and the corresponding storage medium cannot be determined, or the storage medium is searched by trial and error, and the utilization of the history data is performed. In some cases.

As described above, it is impossible with the conventional technique to classify such history data artificially for each storage medium and to perform strict period management and store the data.

Accordingly, an object of the present invention is to provide a plant history data recording device capable of recording history data artificially by period management for each storage medium.

[Structure of the Invention]

According to the present invention, there is provided a recording permission period setting means for setting a period during which plant history data can be stored in a storage medium in order to record plant history data in a storage medium, and a method for temporarily storing plant history data. Means for temporarily storing history data to be stored in a storage medium; recording state input means for inputting a recording state of a storage medium; recording allowable period input means for inputting a storage allowable period set by a recording allowable period setting means; Recording determination means for determining whether or not the plant history data stored in the history data temporary storage means can be recorded on the storage medium based on the recording state of the storage medium and the plant history data when the recording is determined to be possible. Means for recording history data to be recorded on a storage medium, and a storage medium exchange for instructing an operator to replace the storage medium when it is determined that recording cannot be performed. Is provided and an instruction means.

[0009]

With the above arrangement, only the history data for the period that the operator wants to record is stored in the intended storage medium, and the history data is lost even if the operator is absent at the time of replacement of the storage medium, so that the history data is lost. Never do.
At the same time, history data other than that intended is not stored in the storage medium. Further, even if data having a data date and time different from the recording date and time of the history data occurs intermittently, the history data is temporarily stored without replacing the storage medium by the operator each time. Therefore, the storage medium can be stored at once by replacing the storage medium at a time.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a plant history data recording apparatus according to an embodiment of the present invention. The plant history data recording device 1 includes a storage device 2, a storage medium 3, a recordable period setting unit 4, a history data temporary storage unit 5, a record determination unit 6, a record state input unit 7, a recordable period input unit 8, a record data. It comprises recording means 9, storage medium exchange instruction means 10, and communication CRT11.

Here, the storage device 2 records history data in a storage medium 3 mounted on the storage device. The storage medium 3 is a storage medium such as an exchangeable optical disk or a magnetic tape (MT), stores history data, and can be replaced by a new storage medium by an operator when the remaining storage capacity becomes small. It is. The recording allowable period setting means 4 sets a recording start date and time and a recording end date and time of the history data to be recorded on the storage medium 3 by performing a conversation operation with the operator via the communication CRT 11. The history data temporary storage means 5 temporarily stores history data such as plant state data c, plant operation result data d, and plant operation analysis data e. Recording determination means 6
Obtains information on the state of the storage medium 3 and recordable period via the record state input means 7 and the recordable period input means 8 and investigates the history data stored in the history data temporary storage means 5 for each data. Then, whether or not recording is possible is determined. The recording state input means 7 determines the recording state of the storage medium 3 by the recording determination means 6.
Output to The recordable period input unit 8 outputs information on the recordable period of the storage medium 3 to the record determination unit 6.
The history data recording means 9 outputs the recorded data determined to be recordable by the recording determination means 6 to the recording device 2. When the recording determination unit 6 determines that the storage medium 3 needs to be replaced, the storage medium replacement instructing unit 10 prompts the operator to replace the storage medium 3 via the communication CRT 11.

In the above configuration, the operator mounts a new storage medium 3 on the storage device 2. At this time, the recording permission period setting means 4 sets a period during which recording can be performed on the storage medium 3. The recording permission period setting means 4 is configured as shown in FIG. 2. First, various information is registered in the history-related information file 12 for each type of history data recorded in the plant history data recording device 1. That is, information such as the plant state data c, the plant operation result data d, and the data such as the plant operation analysis data e generated at what cycle and the data amount are registered.
In addition, information is registered as to how much non-fixed period history data due to a plant start / stop becomes a data amount by one start / stop. Subsequently, the history capacity calculating means 13 receives the history related information a1 indicating the period and the data amount of the fixed period history data from the history related information file 12, and calculates the data capacity of the fixed period history data generated in one day. I do. In addition, the operator obtains information as to how many times a week is expected to be stopped for start-up, as the recording start end information a, for the purpose of estimating the data capacity at an irregular cycle due to the start and stop. As a result, the average daily data capacity is calculated from the history-related information a1 indicating the amount of data in one stop. The history capacity calculating means 13 outputs the data amount information a2 per day by combining the fixed period history data amount and the non-fixed period history data amount thus obtained.

The storage medium allowable period calculation means 14 calculates the number of days that can be recorded in the storage medium 3 from the data amount information a2 per day and the storage capacity of the storage medium 3 which is known in advance. And this includes some margin,
It is output as storage medium allowable period information a3.

Next, the recording period determining means 15 inputs the recording start date and time for recording on the storage medium 3 from the operator via the communication CRT 11 as recording start end information a, and determines and calculates the recording start date and time. The recording end date and time are provisionally determined based on the storage medium allowable period information a3. The recording end date and time provisionally determined in this way is notified to the operator via the communication CRT 11, and prompts the final end date and time to be determined.

Here, if the end date and time are shorter than the end date and time of the tentative decision previously determined, the end date and time can be stored in a storage medium in accordance with the period management that the operator wants to manage, such as monthly, yearly or yearly. decide.

The recording start date and time and the recording end date and time determined by the recording period determining means 15 are output as a recording period b, and as shown in FIG. The recording start date and time and the recording end date and time that can be recorded are written in the file.

On the other hand, the recorded data such as the plant state data c, the plant operation result data d, and the plant operation analysis data e are all temporarily stored in the history data temporary storage means 5 as shown in FIG. Here, the history data temporary storage unit 5 is configured to temporarily store even when the storage medium 3 cannot be stored. Therefore, the storage capacity has a capacity of about 10 days in consideration of a period during which the storage medium cannot be replaced due to the absence of the operator.

Next, the recording state input means 7 stores the state of the storage medium 3 via the storage device 2, that is, whether the storage medium is mounted, or a percentage of the total capacity of the storage medium 3, and the rest is stored. The storage medium state information g such as how much is input and output to the recording determination means 6 as recording state information i. Also,
In the recording allowable period input means 8, the recording allowable period of the storage medium 3, that is, the recording start and end dates and times shown in FIG. It is input and output to the recording determination means 6 as recording period information j.

The recording judging means 6 inputs the temporary storage information f and checks whether data can be recorded in the storage medium 3 one by one, as shown in FIG. 5, for each item.
That is, for example, the recording determination unit 6 obtains from the recording state information i
When the storage medium 3 is not mounted, or when the storage capacity that can be stored is small even when the storage medium 3 is mounted, the recording medium exchange information k is output to prompt the user to mount the storage medium. Further, if there is history data other than the period during which the recording medium can be recorded according to the recording period information j, the recording medium exchange information k for prompting the user to mount the storage medium is output. As a result of investigating the temporary storage information f in this way, if the storage history data m can be stored in the storage medium 3, the recording history data m is stored in the history data recording unit 9.
Output to The history data recording means 9 outputs a history data storage signal n to the storage device 2 for storing the recording history data m in the storage medium 3.

On the other hand, when outputting the recording medium exchange information k as shown in FIG. 5, the storage medium exchange instructing means 10 communicates an operator prompting message signal o for prompting the exchange of the storage medium 3 according to the recording medium exchange information k. Output to CRT11.

The operation of the above-described plant history data recording device 1 will be described in a concrete example with reference to FIG.
The recording permission period setting means 4 sets so that the history data from October 1, 1989 to December 31, 1989 is stored in a certain storage medium (n). No, 1, N in the figure
The record data of o and 2 is judged to be recordable by the record judging means 6 and output as record history data m.
Is stored. However, even if the date and time is January 1, 1990, and the history data No. 3, No. 4, No. 5, and No. 5 are sequentially generated, the recording determination unit 6 determines that recording is not possible. Accompanying this, recording medium exchange information k for prompting the operator to exchange the storage medium 3 is output. At this time, even if the storage medium 3 cannot be replaced due to the absence of the operator, these pieces of history data are temporarily stored in the history data temporary storage means 5 and do not disappear. Eventually, the operator replaces the storage medium (n + 1) with the storage medium (n + 1) and sets the recording allowable period setting means 4 to store the history data from January 1, 1990.
History data such as 4, No, and 5 are stored.

Further, the fuel component value of a coal-fired power plant requires about 10 days for component analysis.
On a daily basis, analysis results and plant operation data using the fuel components of the previous month, that is, December '89, were completed.
No. and i are temporarily stored in the history data temporary storage means 5. At this time, the storage medium 3 has already been replaced by the operator with a storage medium (n + 1) for recording data in January 1990. The recording determination means 6 determines that recording is not possible, and outputs recording medium exchange information k urging the operator to replace the storage medium 3. Eventually, the operator changed to '89
When the storage medium (n) for data recording from October to December 31 is exchanged, data No. and i are stored in the storage medium.

As a result, as shown in FIG. 6, the intended history data is recorded in the storage medium (n) and the storage medium (n + 1) under the strict management of time and time.
The storage medium (n) shown in FIG.
Period management is performed so that history data from January 1 to December 31, 1989 is recorded. FIG. 6 (b)
The storage medium (n + 1) shown in the following is "from January 1, 1990"
Period management is performed so that history data up to March 31, 1990 is recorded.

As described above, if the allowable recording period is set in the storage medium (n) by the allowable recording period setting means 4,
The history data to be recorded during this period is recorded on the storage medium (n). If the recording permission period is set in the storage medium (n + 1) by the recording permission period setting means 4, the user is prompted to mount the storage medium (n + 1) to record the history data within the recording permission period. At this date and time when the storage medium should be replaced, even if the operator does not replace the medium, the history data is temporarily stored and does not disappear. When the storage medium (n + 1) is eventually replaced by the operator, the data is again recorded on the storage medium (n + 1) according to the setting of the recording permission period setting means 4. Further, when data to be recorded on the storage medium (n) is generated in a few days, the operator is prompted to replace the storage medium, and the data can be stored in the storage medium after the replacement. Even if such data occurs intermittently, the history data is temporarily stored, so that the exchange and storage of the recording medium can be performed at once. By performing the storage medium period management in this manner, even if the operator is absent at the time of replacement of the storage medium, the storage medium is not stored in another unintended storage medium, and the history data is not lost. Moreover, even if the history data is not stored in chronological order, it can be stored in the intended storage medium. Moreover,
Since the data to be stored in the corresponding medium can be temporarily stored, the data can be collectively stored, so that the number of times of replacing the storage medium can be minimized.

[0026]

As described above, according to the present invention, it is possible to strictly manage the period during which the history data is recorded in the storage medium and to reduce the burden on the operator to a minimum. Further, the stored history data is often read out by designating a data date and time and a data type, and examining past operation contents and analyzing a plant operation method. In this case, since it is clear which date the history data is recorded in which storage medium, the storage medium storing the desired history data can be easily determined.
Therefore, the burden on the operator can be reduced, and the analysis and analysis based on the history data can be performed smoothly, thereby contributing to a reduction in plant operating costs, safe operation, high efficiency operation, and the like.

[Brief description of the drawings]

FIG. 1 is a block diagram of a plant history data recording device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a recording permission period setting unit of the apparatus.

FIG. 3 is an explanatory diagram showing an outline of storage contents of a storage medium of the device.

FIG. 4 is an explanatory diagram showing storage contents of a history data temporary storage unit of the apparatus.

FIG. 5 is an explanatory diagram showing determination conditions of a recording determination unit of the apparatus.

FIG. 6 is an explanatory diagram showing storage contents of a storage medium of the same device.

FIG. 7 is an explanatory diagram showing storage contents of a storage medium showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plant history data recording device 2 Storage device 3 Storage medium 4 Recording permission period setting means 5 History data temporary storage means 6 Recording judgment means 7 Recording state input means 8 Recording permission period input means 9 History data recording means 10 Storage medium exchange instruction means

Claims (1)

(57) [Claims] 1. A plant history data recording device for recording plant history data on a storage medium, comprising: a recording allowable period setting means for setting a period during which the plant history data can be stored on the storage medium; History data temporary storage means for temporarily storing, recording state input means for inputting the recording state of the storage medium, and recording for inputting the storage allowable period set by the recording allowable period setting means An allowable period input unit, and the plant history data stored in the history data temporary storage unit based on a recording allowable period of the recording allowable period input unit and a recording state of the storage medium by the recording state input unit. Recording determination means for determining whether or not recording can be performed on the recording medium; History data recording means for recording the plant history data stored in the recording history data temporary storage means on the storage medium; and a storage medium for instructing an operator to exchange the storage medium when the recording determination means determines that the recording cannot be performed. A plant history data recording device, comprising: a replacement instruction unit.