JPH09230930A - Plant operation guide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the judgment as to whether a retrieved case is proper or not for an operator by providing a retrieval block generation means and a retrieval expression correspondence screen arrangement means displaying a generated retrieval block in accordance with the arrangement of the retrieval expression. SOLUTION: A case item reading part 50 reads the case item corresponding to a retrieval key from the case retrieved in a case retrieving part 40. A retrieval block generating part 60 combines the retrieval key and the case item corresponding to this key in accordance with the arrangement of the retrieval expression. A retrieval expression correspondence screen arranging part 70 displays the retrieval block generated in the retrieval block generating part 60 in accordance with the arrangement of the retrieval expression. Processes through which the part 40 retrieves the case base 10 are described by the case item reading part 50 and the retrieval block generating part 60 and the description is displayed on a screen by the screen arranging part 70, so that how the logical expansion is conducted for the case retrieval can be clearly recognized by an operator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant operation guide device for facilitating plant operation in the petrochemical industry or the like, and more particularly to an improvement in the case where an operator searches for past cases similar to the current operation state.

[0002]

2. Description of the Related Art A plant operation guide device facilitates an operator to manage the operation status of the entire plant, as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-166086 proposed by the present applicant. The handling of alarm signals has been devised. And Yokogawa Technical Report Vol. 37, No. 189
As disclosed on page (1993), reuse of know-how is used in engineering work related to instrumentation control, but this reuse of know-how is the same when the operator operates the plant. .

In such a conventional plant operation guide device based on a case, the history of the operation that the operator has performed in the past, the operation manual, and the like are registered in the case database as examples. Then, this device searches for an appropriate case based on the situation of the plant in which it is placed, the search key specified by the operator, and the like.

[0004]

However, it is rare that there are cases in which the situation is exactly the same as the situation of the plant in which it is placed, and in many cases it is a reality to search for cases in similar situations. Is. At this time, only the result was presented for the case searched by this device, and the operator was not notified of the situation in the middle. Therefore, there is a problem that the retrieved case is appropriate for the operator or the reference material for the judgment is insufficient. The present invention has solved the above-mentioned problems, and an object of the present invention is to provide a plant operation guide device that allows an operator to easily determine whether a searched case is appropriate.

[0005]

According to the present invention for achieving the above object, there is provided a case base 10 in which a history of driving performed by an operator in the past, a driving manual, and the like are registered using a search key and a case item. By using the means 30 for defining a search expression using the search key and the search expression defined by the search expression defining means, a case item satisfying or similar to the search expression is registered from the case registered in the case base. In the plant operation guide device having a searching unit 40,
A means 50 for reading case items corresponding to the search key used in the search expression from the case searched by the case search means, and a combination of the search key and the corresponding case item according to the arrangement of the search expression. It is characterized by including a search block generation means 60 for performing search and a search expression corresponding screen layout means 70 for displaying the search block generated by the search block generation means according to the layout of the search expression.

According to the configuration of the present invention, the case search means is
A case registered in the case base is searched according to the search formula defined by the search formula defining means, and a case satisfying the search formula or a case closest thereto is selected. The case item reading means and the search block generating means describe in detail how the case searching means goes through to search the case base, and display on the screen by the search expression corresponding screen arranging means.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, a case base 10 is one in which a history of driving performed by an operator in the past, a driving manual, and the like are registered by using a search key and a case item. See in detail. Knowledge base 20
Is a database that stores the search formulas defined by the next search formula definition unit 30. The search expression defining unit 30 defines a search expression using a search key, and a specific search expression will be described later in detail with reference to FIG. The case search unit 40 uses the search formula defined by the search formula definition unit 30 to search the case registered in the case base 10 for a case item satisfying or similar to the search formula. In addition, here, the case search unit 40
As a criterion for determining that the two are similar to each other, one that is usually used as a search formula is used.

The case item reading unit 50 reads the case item corresponding to the search key used in the search formula from the case searched by the case searching unit 40. Search block generator 60
Combines the search key and the corresponding case item according to the arrangement of the search expression. The search formula corresponding screen layout unit 70 displays the search blocks generated by the search block generation unit 60 according to the layout of the search formula.

FIG. 2 is a principal part diagram showing an example of a case registered in the case base 10. Case ID as a search key
(Identification symbol), operation type, operation phase at the time of alarm occurrence, alarm content, trend, operation content are listed.
For the trend, monitoring points 1, 2, ... And individual designation for each monitoring point is also performed. The case item is described in correspondence with the search key, and the "case ID" is ID00.
1. Abnormality avoidance for "type of operation", production volume change for "alarm operation phase" (75% → 100%) / C
L1 transient processing, "alarm content" Tower pressure H1,
A graph showing a time-series change of observation values for each of monitoring points 1 and 2 for the "trend", and (a) to (c) are described as "intra-column pressure H1 avoidance operation" for the "operation content". Here, the CL1 transient process means a transient process for the code CL1 for identifying the operating state of the plant. In addition, information such as (a) Steam amount SV change, (b) Separator pressure MV change, (c) Recirculation amount SV change, etc.
This is what the operator wants to know this time.

Next, the operation of the above-configured device will be described. FIG. 3 is a flow chart for explaining the procedure of case search. First, a search formula is defined using a search key (S
1). The search formula is, for example, the following formula. Search formula = (A and B) or C (1) Here, A, B and C are search keys, for example, the search keys exemplified in FIG. 2 are individually applied.

Next, the case retrieval unit 40 uses the defined retrieval formula to satisfy the retrieval formula from the case base 10 or retrieve the closest case (S2). Then, the retrieved case is displayed on the screen to notify the operator (S
3). If the operator feels uncomfortable with the search or needs reference information when formulating another search expression, S
If the operator is satisfied with the search result, the process ends. When there is a command from the operator, the case item reading unit 50, the search block generation unit 60, and the search expression corresponding screen layout unit 70 cooperate to display the search processing process (S5).

FIG. 4 is a diagram showing an example of a search process screen displayed by the search expression corresponding screen layout unit 70. here,
Here, the following is used as the search formula. Search formula = [target series / unit] and [operation phase] and {[alarm] or [trend]} and [number of times of use] (2) Then, in the search formula sequence display unit 76, process 1 → process 2 →
The search blocks are arranged in the order of process 3 → process 4.

In each process, the search key display section 72 and the case item display section 74 of the corresponding search block are displayed. Then, in the search block of the process 1, for the search key [target series / unit], [ABC
Decomposition series / distillation column] is displayed in two stages. Here, “ABC” is a unique name of the plant registered in the case base, and a specific name such as naphtha is appropriately used. In the search block of process 2, for the search key [operation phase], [Production amount change (75% → 100%) / CL1 transient process] is displayed in two rows as an example item. In the search block of step 3, "or" in the search formula
Corresponding to, the search key is branched to [Alarm] and [Trend]. Then, [Tower pressure H1] is displayed as a case item corresponding to the search key [Alarm], and [Tower pressure / Tower] is displayed as a case item corresponding to the search key [Trend].
Feed amount / steam amount] are displayed in three rows. Here, the "feed amount" is synonymous with the reflux amount. In the search block of the process 4, [most] is displayed as a case item for the search key [number of times of use].

FIG. 5 is a block diagram showing the configuration of the second embodiment of the present invention. The difference from FIG. 1 is that the search process recording unit 80
The point is that the narrowing-down situation grasping section 90 is added. The search process recording unit 80 records the search process according to the arrangement order of the search keys in the search formula when the case search unit 40 searches for a case in the case base 10. In the search formula, the search keys are arranged from upper to lower. Narrowing down situation grasping section 9
0 superimposes the search keys arranged from the upper order to the lower order to grasp how the number of cases satisfying the condition in the case base fluctuates, and sends it to the search expression corresponding screen layout unit 70. There is.

The operation of the apparatus thus configured will be described again with reference to FIG. In the search formula order display portion 76, (5
0) → process 1 → (20) → process 2 → (6) → process 3 →
The numbers are displayed in the order of (1, 2) → process 4 → (1). In the narrowing-down situation grasping unit 90, the narrowing-down situation by the search key in the expression (2) is sequentially displayed. There are 50 cases in the case base 10, 20 satisfy the [target series / unit] and 6 satisfy the [operation phase]. In process 3, this 6
It is displayed that the number of items satisfying the [alarm] is one and the number of items satisfying the [trend] is two. Finally, in step 4, the number of uses is narrowed down to one. In this way, the operator can easily understand the relationship between the search key in the search formula and the narrowing down of cases.

FIG. 6 is an explanatory view of switching screens operated by the operator. In an instrumentation room such as a plant, an operator switches between a display screen of a search case, a display screen of a search process, and a display screen of a similar situation of a search case for observation. The search case display screen displays cases searched by the case search unit 40 from the case base 10. The display screen of the search process is
It corresponds to the above-mentioned FIG.
Indicated by 0. The display screen of the similarity status of the search case is a screen that displays how similar the searched case is to the search formula, and the method of determining the similarity status is known as described above.

[0017]

As described above, according to the present invention, by the case item reading unit 50 and the search block generating unit 60, the process by which the case searching unit 40 searches the case base 10 is performed. Since the detailed description is made to be displayed on the screen by the search expression corresponding screen arranging unit 70, there is an effect that the operator can clearly recognize what kind of logical expansion the case was searched for. Also. As in the second embodiment, the search process recording unit 80 and the narrowing down situation grasping unit 9
When 0 is added, it is possible to specifically understand how the case search unit 40 narrowed down the cases of the case base 10, and it is possible to verify the validity of the search formula more accurately.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

FIG. 2 is a main part diagram showing an example of a case registered in a case base 10.

FIG. 3 is a flowchart illustrating a procedure of case search.

FIG. 4 is a diagram showing an example of a search process screen displayed by a search expression corresponding screen layout unit 70.

FIG. 5 is a configuration block diagram showing a second embodiment of the present invention.

FIG. 6 is an explanatory diagram of switching screens operated by an operator.

[Explanation of symbols]

 10 case base 30 search formula defining means 40 case search means 50 case item reading means 60 search block generating means 70 search expression corresponding screen arranging means

Claims (1)

[Claims] 1. A case base (10) in which a history of driving performed by an operator in the past, a driving manual, etc. are registered using a search key and case items, and a means for defining a search formula using the search key. (30)
And a means (40) for using the search formula defined by the search formula defining means to search for a case item satisfying or similar to the search formula from the cases registered in the case base, and a plant operation guide having: In the apparatus, means (50) for reading a case item corresponding to the search key used in the search expression from the case searched by the case search means, and the search key and the corresponding case according to the arrangement of the search expression. Search block generation means (60) for combining case items
And a search formula corresponding screen layout unit (70) for displaying the search block generated by the search block generation unit according to the layout of the search formula.