JP6440485B2 - Plant maintenance operation support system - Google Patents

Description

  The present invention relates to a plant maintenance operation support system using a two-dimensional code.

In recent years, in plant facility maintenance work, due to the advancement of facilities, a large number of devices must be handled, and the work is complicated. An example of a series of operations that have been performed in the past is that the operator performs operations such as opening and closing the valve and power supply while visually checking the procedure and operating equipment according to the procedure table shown in the paper manual. Check the procedure table with a writing instrument, and install the operation prohibition tag for the handled equipment as a mark for those concerned. Since it is necessary to perform the same operation on a plurality of devices, the load on the worker is increased.
For this reason, a system that supports simplification of work has been proposed. For example, the support system disclosed in Patent Document 1 includes an IC tag, a mobile terminal, and a server that are disposed in a device that is an operation target of equipment, and an operator reads the IC tag by operating the mobile terminal. Check the device status and operate the device.

Japanese Patent No. 4782063

The operation support system using an IC tag or RFID uses a dedicated reader for reading, and thus has a high cost problem, and interference is likely to occur, thereby causing a problem that reading accuracy deteriorates. In addition, there is a problem that workers and related persons cannot grasp the state of the device with a glance.
Further, in interlock management that requires a complicated operation such as a selection input button operation or a password input, a human error may occur due to an operation error.

  Therefore, the present invention provides a plant maintenance support system that is low-cost, has high reading accuracy, enables workers and related parties to recognize the state of equipment at a glance, and can perform simple and reliable interlock processing. For the purpose.

  The plant maintenance operation support system of the present invention stores a computing device, a network module, a server program, a server having a storage device for storing a database, a computing device, a display unit, an input unit, a camera, and a client program. A plant maintenance operation support system comprising a plurality of information terminals equipped with a storage device and a wireless communication module, and a plurality of equipment status indicators attached to an operation target device, the equipment status indicator The first display unit colored with the first color, the second display unit colored with the second color, the first two-dimensional code provided in the first display unit, The second two-dimensional code provided in the second display unit, the first display unit displaying the first display unit and hiding the second display unit, and the second display unit displaying the first display unit Hide second A movable member reciprocally moving the device, wherein the first two-dimensional code includes a unique equipment state ID and processing content information, and the second two-dimensional code is a unique equipment state ID. And processing content information different from the first two-dimensional code, the database stores a column for storing an operation number, a column for storing equipment state ID, a column for storing processing content, a column for storing equipment treatment records, An operation procedure table including a column for storing an operation number to be unlocked, a column for storing a unique equipment state ID, and a column for storing processing content information associated with the equipment state ID on a one-to-one basis An equipment state management table, and the client program acquires the operation procedure table from the server via a network. When a two-dimensional code is imaged by the information acquisition means and the camera of the information terminal, the equipment state ID and processing content information included in the two-dimensional code are collated with the equipment state ID and processing content information of the acquired operation procedure table. When the collation information matches and the lock flag information is non-locked, the column storing the equipment treatment record associated with the equipment state ID of the storage device of the information terminal is updated to the treated state An action update means for sending a request to update the column storing the equipment action record to the treated state, and an interlock that dynamically generates lock information having a locked or unlocked value for each operation number The information generation means and the treatment update means update the column storing the equipment treatment record and associate the updated column with the updated column. Lock information update means for updating the value of lock information associated with the operation number of the storage device of the information terminal to unlock when the operation number assigned is a target for releasing the interlock. Features.

The plant maintenance operation support system further includes an installation piece having a third two-dimensional code, and a cut piece having a third two-dimensional code and joined to the installation piece via a cut line. The database includes an operation prohibition tag table having a column for storing equipment state ID and a column for storing installation records, and the information acquisition means of the client program acquires the operation prohibition tag table. When the third two-dimensional code is imaged by the camera, the client program updates the column storing the installation record of the storage device of the information terminal to installed, and the installation record is updated. Prohibiting tag management means for transmitting a request to update a column to be stored to be installed may be provided.
In the plant maintenance operation support system, the two-dimensional code may be a QR code (registered trademark).
In the plant maintenance operation support system, when the two-dimensional code includes information on the name of an operation target device and installation location, and the client program images the two-dimensional code with the camera, the information terminal operates the information terminal. The information on the name of the target device and the installation location may be displayed.
In the plant maintenance operation support system, the database includes information on a work manual associated with an equipment state ID, the information acquisition unit of the client program can acquire the work manual, and the client program includes: When the first or second two-dimensional code is imaged by the camera, a work manual may be displayed on the display unit of the information terminal.
In the plant maintenance operation support system, when the client program acquires a value of a column that stores lock information attached to the equipment state ID included in the captured two-dimensional code, and the value is in the locked state The information terminal may be provided with means for displaying that the interlock is in progress.

According to the present invention, since a two-dimensional code is used, a dedicated reader can be realized at low cost only by software processing by a general-purpose information terminal.
In addition, since the reading method is an optical method, it is difficult to be affected by interference and the reading accuracy can be improved.
Moreover, since it becomes clear visually by an apparatus state display tool, it can be possible for an operator or a related person to recognize the state of an apparatus at a glance.
Furthermore, since device information and operation procedures are displayed on the information terminal, it is not necessary to carry a conventional paper manual, and the burden on the operator can be reduced.

1 is an overall configuration diagram of a system according to a first embodiment. It is explanatory drawing of the operation procedure table which concerns on 1st embodiment. It is explanatory drawing of the equipment state management table which concerns on 1st embodiment. It is explanatory drawing which shows the 1st display state of the equipment status indicator which concerns on 1st embodiment. It is explanatory drawing which shows the 2nd display state of the equipment state indicator which concerns on 1st embodiment. It is a flowchart which shows the work procedure using the system which concerns on 1st embodiment. It is an image figure of the operation procedure table | surface which concerns on 1st embodiment. It is explanatory drawing of the operation prohibition tag management table which concerns on 2nd embodiment. It is explanatory drawing of the attachment aspect of the work prohibition tag which concerns on 2nd embodiment. It is explanatory drawing of the work prohibition tag which concerns on 2nd embodiment. It is a flowchart (1/2) which shows the work procedure using the system which concerns on 2nd embodiment. It is a flowchart (2/2) which shows the work procedure using the system which concerns on 2nd embodiment.

  In the plant maintenance operation support system of the present invention, a server storing a maintenance procedure database and an information terminal are linked to allow an operator to access information such as the contents of an operation procedure using the information terminal. By using it and collating the state of the operation target device, the operator can easily and reliably operate the operation target device.

The main functions and features of the system of the present invention are described below.
(1) Operation procedure table display function:
When the operator launches the client program on the information terminal, the operation procedure table created in advance with general-purpose spreadsheet software and approved by the supervisor and saved on the server is downloaded manually or automatically from the server. It is displayed on the screen to support step confirmation of device operation. After the work is completed, the worker reflects the result in the operation procedure table and saves the result on the server via the network.
(2) Operation prohibition bill creation function:
As with conventional devices, an operation prohibition tag (with a two-dimensional code) is automatically created by a printer based on an operation procedure table.
(3) Target device verification function:
The two-dimensional code attached to the operation target board or the operation target device is read by the built-in camera of the information terminal and collated with the operation target device information registered in advance to prevent misidentification.
(4) Operation status linkage function:
Share the operation status between information terminals. As a result, parallel work by multiple teams is possible. The progress status can also be confirmed at any time on the server.
(5) Operating procedure interlock function:
An interlock function is provided to prevent the operation from proceeding to the next step if the operation steps associated in advance are not completed, thereby preventing erroneous operation.
(6) Know-how display function:
By registering operation know-how materials such as characteristics of special tools and valves necessary for operation in advance, they are displayed during operation.
(7) Function prohibition tag verification function:
The two-dimensional code printed on the operation prohibition tag is read and verified by a camera with a built-in information terminal to support verification at the time of collection.

≪First embodiment≫
A plant maintenance operation support system according to a first embodiment of the present invention will be described. First, a configuration according to the present embodiment will be described, and then an operation procedure will be described.
<Configuration>
FIG. 1 shows an outline of a system according to this embodiment in which a power generation plant is applied. In the present embodiment, a system that spans two facilities of “power center” and “power plant” is illustrated.

[Power Center]
In the power center, a master server 1, an information terminal 3, and a printer 9 are installed.
The master server 1, which save to a database of information of operating procedures and equipment, and transmitting, in response to a request from the information terminal or the like, collects and manages process information of the target device 20 ₁ to 20 _Y to be described later It is permanently installed in the power center.
The master server 1 includes a storage device (not shown) that stores an arithmetic device, a network module, a server program, and a database. The master server 1 is connected to LANs (Local Area Networks) 5 and 6 via a network module, and can perform information communication with a replication server 2 and other terminals described later. Similar to the information terminal 3 described later, it is possible to input and update information in the database. The operation procedure table 11 and the equipment state management table 12 held in the database will be described later.

The information terminals 3 _{1 to} 3 _k will be described later in the section “Power plant”.
The printer 9 is a label printer that receives an instruction from the master server 1 and prints an operation prohibition tag 300 and two-dimensional codes 43 and 44 described later.

The LAN 5 is communicatively connected via a dedicated line 200 which is an information communication network connecting the facilities “electric power center” and “power plant”. Instead of the dedicated line 200, the bases may be connected by a VPN (Virtual Private Network).
The LANs 6 are information communication networks in the facilities “Power Center” and “Power Plant”, and the LANs 6 are connected to each other via the LAN 5 and the dedicated line 200. The facilities “Power Center” and “Power Plant” are connected to each other. And communication between devices across the facilities “power center”-“power plant” is possible. Note that the LAN 5 is not an essential component, and it is also possible to connect the LANs 6 via the dedicated line 200 without installing the LAN 5 depending on customer requirements.

The operation procedure table 11 and the equipment state management table 12 held in the database of the master server 1 will be described.
The operation procedure table 11 shown in FIG. 2 stores information such as the operation procedure of the operation target devices 20 _{1 to} 20 _Y and the completion status of the interlock status treatment in a table format, and the information terminal 3 described later by the operator or the instructions with ₁ to 3 _X, work manager is intended to provide for the purpose of and manage the progress of working with server (1, 2) and information terminals 3 ₁ to 3 _X.
The operation procedure table 11 includes an operation item number column, an interlock number column, an equipment state ID column, an operation item (model name) column, a processing content column, and a treatment record column. Note that the lock information illustrated by the dotted line is information dynamically generated by the client program as will be described later.

In the operation item number column, a number assigned for each operation procedure is recorded.
In the interlock number column, the target operation item number is recorded so that the operation item related to the specific operation item number is not locked.

In the equipment state ID column, ID numbers associated with the states of the operation target devices 20 _{1 to} 20 _Y are recorded. The operation target devices 20 _{1 to} 20 _{Y have} two states of “open” / “closed” in many cases, but there are cases where the state is zero or three or more. In the present embodiment, not managed all devices, it has only managed operation target device 20 ₁ to 20 _Y to be operated. This is because when all devices are managed, it is necessary to assign IDs to all devices, which is complicated.

In the operation item (model name) column, the names of the operation target devices 20 _{1 to} 20 _Y are recorded.
In the processing content column, the status of the target operation device, for example, “open” / “closed”, “ON” / “OFF”, “on” / “off”, “pressed” / “pull up”, etc. It is recorded.
The date and time when the treatment is completed is recorded in the treatment record column.

  When the client program acquires the operation procedure table 11 having the above columns, lock information is dynamically generated by logic. The lock information is a flag for managing whether or not each operation item is in a locked state, and as lock information is automatically generated, it is as if the column of the operation procedure table 11 is increased by one. If the operation item is locked, “locked” is recorded, and if it is not locked, “unlocked” is recorded.

The equipment state management table 12 shown in FIG. 3 is a data table for creating the operation procedure table 11, and stores information such as the installation location and processing contents of each operation target device in a table format.
The equipment state management table 12 includes an equipment state ID column, an office name column, a classification column, a location column, an operation item (model name) column, and a processing content (state) column.

In the equipment state ID column and the operation item (model name) column, a list of data to be selectively input to each column of the operation procedure table 11 is recorded.
The name of the power plant such as XX power plant is recorded in the business name column.
In the classification column, the names of the facilities provided with the operation target devices 20 _{1 to} 20 _Y are recorded.
In the place column, the name of the place (block) where the equipment is installed is recorded.
In the equipment state column, states that can be taken by the operation target devices 20 _{1 to} 20 _Y are recorded.

  The establishment name column, the classification column, the location column, the operation item (model name) column, and the processing content (state) column are associated with the equipment state ID, and when the equipment state ID is input to the operation procedure table 11, With reference to the equipment state management table 12, these data are automatically reflected in the operation procedure table 11.

[Power plant]
In the power plant, operation target devices 20 _{1 to} 20 _Y , a replication server 2, information terminals 3 _{1 to} 3 _X , an equipment status indicator 4, and a wireless LAN base unit 7 are installed.
The replication server 2 is a copy server of the master server 1, stores the operation procedure and device information in a database, transmits it in response to a request from an information terminal or the like, and stores the operation target devices 20 _{1 to} 20 _Y described later. It collects and manages processing information and is permanently installed in the power plant. The replication server 2 communicates with information terminals 3 _{1 to} 3 _X, which will be described later, and functions as a main body for updating the database. The replication server 2 communicates information with the master server 1 periodically (for example, at intervals of 1 second). A request is made to synchronize the operation procedure table 11 with the operation procedure table 11 in the replication server 2.
In this embodiment, the replication server 2 is installed in order to reduce the communication amount between the bases. However, the replication server 2 may be configured to communicate directly with the master server 1 without installing the replication server 2.

The information terminals 3 _{1 to} 3 _X are terminals for acquiring the operation procedure table 11 from the replication server 2 and displaying the work procedure and device information to the worker. Also, it has a function of reading the two-dimensional code attached to the operation target devices 20 _{1 to} 20 _Y , transmitting the equipment state ID and processing content information included in the code to the replication server 2, and displaying these information. ing.

The information terminals 3 _{1 to} 3 _X are terminals such as notebook PCs, tablets, mobile phones, smartphones, portable PCs, PDAs, wearable terminals, etc., a storage device in which an arithmetic device, a camera, and a client program (not shown) are stored, display Unit, an input unit, and a network module. A desirable form for the information terminals 3 _{1 to} 3 _X includes a tablet in order to facilitate input without requiring keyboard input and to make operation information easy to see on a relatively large screen. As illustrated in FIG. 1, the information terminals 3 _{1 to} 3 _X may be configured from different types of terminals.

The information terminals 3 _{1 to} 3 _X are connected to the LAN 6 via a network module and communicate information with the replication server 2. Since the information terminals 3 _{1 to} 3 _X are carried at the work site, the information terminals 3 _{1 to} 3 _X are connected to the LAN 6 by wireless communication 8 with the wireless LAN base unit 7.
A plurality of the wireless LAN master devices 7 are installed in the power plant, and wireless communication can be performed at least around the operation target devices 20 _{1 to} 20 _Y.

The information terminals 3 _{1 to} 3 _X can capture a two-dimensional code with a camera. This camera can be a general-purpose device provided in a terminal such as a notebook PC, tablet, mobile phone, smartphone, portable PC (pocket PC), PDA, wearable terminal, etc., and is externally attached to these terminals. A thing may be used.

  The equipment state indicator 4 is an instrument that visually represents the state of the device and displays a two-dimensional code corresponding to the state of the device. The “equipment state” here is information stored in the processing content column of the operation procedure table 11 and the equipment state column of the equipment state management table 12, for example, “open” / “closed”, “ON” ”/“ OFF ”,“ On ”/“ Off ”,“ Press ”/“ Pull up ”, and the like.

As shown in FIGS. 4 and 5, the equipment state indicator 4 includes a main body 40, a first display unit 41 colored with a first color, and a second display unit colored with a second color. 42, the first two-dimensional code 43 provided on the first display unit 41, the second two-dimensional code 44 provided on the second display unit, and the first display unit 41 are displayed. A movable member 45 that reciprocates between a first position that hides the second display section 42 and a second position that displays the second display section 42 and hides the first display section 41, and a wire 46 that penetrates the main body 40. It is prepared for.
The equipment status indicator 4 according to the embodiment is provided with a first display unit 41 at a lower part of a main body 40 which is a cylindrical long member, and a second display unit 42 at an upper part. The cylindrical short member inserted into the main body 40 constitutes the movable member 45.

The first display unit 41 is colored green, and the second display unit 42 is colored red.
When the movable member 45 is in the first position (see FIG. 4), the first display unit 41 is displayed and the second display unit 42 is hidden. In this state, the worker can visually recognize that it is in the steady operation state by visually recognizing the green first display unit 41. The first display unit 41 displays, for example, characters “Closed” and “OFF”.
When the movable member 45 is in the second position (see FIG. 5), the second display unit 42 is displayed and the second display unit 41 is hidden. In this state, the operator can immediately recognize that the operation state is unsteady by visually recognizing the red second display unit 42. For example, characters “open” and “ON” are displayed on the first display unit 42.

The first two-dimensional code 43 provided in the first display unit 41 and the first two-dimensional code 44 provided in the second display unit 42 are, for example, QR codes (registered trademark) and are unique. The equipment state ID, processing content information, and the like are included. Here, it is possible to use a barcode instead of the two-dimensional code 43 or 44, but use a QR code because the amount of information that can be included is small compared to a QR code that is a two-dimensional code. Is desirable. By displaying a large amount of information that cannot be included in the bar code on the information terminals 3 _{1 to} 3 _X , the operator looks at the information and checks whether there is a mistake in the operation target devices 20 _{1 to} 20 _Y. Because it can. In addition, the QR code can be read even when the direction of the label is irregular, and has an advantage that it can be read even in a relatively dark place.

After the work is completed, the movable member 45 of the state display tool 4 is slid so that either the first display unit 41 or the second display unit 42 can be visually recognized so as to suit the processing content. The first two-dimensional code 43 or the second two-dimensional code 44 that can be visually recognized in this state is captured by a camera provided in the information terminals 3 _{1 to} 3 _X , so that the client program operates the operation target devices 20 _{1 to} 20 _Y. Update the equipment state value for. When the update of the equipment state value is executed, the client program communicates with the server program and performs a process of releasing the interlock of other operations associated with the operation procedure. Note that imaging by the camera is preferably realized as one function in the client program.
Since the two-dimensional code is attached to the status indicator 4, it is possible to use a camera that is normally built in a tablet or the like, and because the display of the device status can be easily switched by the movable member 45, Compared to the case of using an IC tag, a dedicated reader / writer is not required, and a system can be constructed at a low cost.

<Work procedure>
The operation of one worker in the power generation plant using the system according to the present embodiment will be described as an example.
In the following explanation, it is assumed that the equipment is to be brought down for the inspection from the steady operation state. As a premise, the equipment status indicator 4 is attached to each device in advance, and the operator can use the information terminal 3 _1. It shall operate the operation target apparatus ₂₀₁ with reference to.
FIG. 6 shows a work flow. Hereinafter, according to this flow, details are shown in STEP600 to STEP612.

(STEP 600)
The operator, launched an information terminal 3 _1, start the client program.
The client program, the replication server 2 and to the wireless communication, acquires information of the operation procedure table 11, is stored in the operation procedure table 11 in the storage device of the information terminal 3 _1.
At this time, the treatment records of the other operation target devices 20 _{2 to} 20 _x may be displayed as a list. In this case, when the work is divided into a plurality of groups, confirmation by communication using a conventional transceiver or the like is performed. This eliminates the effect of simplifying the work, preventing contact errors, and reducing the time for confirmation.

(STEP601)
The operator, to move with the information terminal 3 ₁ to the installation location of the target device 20 _1.

(STEP602)
The client program, the information terminal 3 ₁ showing the operation procedure table in the operator (see FIG. 7). In the present embodiment, an operation item during interlocking (operation No. 2-2 in FIG. 7) is indicated in red, so that it is possible to grasp at a glance whether or not the operator is interlocking. The client program acquires the difference data of the operation procedure table 11 every predetermined time (for example, several seconds to several tens of seconds), and updates the operation procedure table.
When the lock flag information of the operation item to be performed is “locked”, the worker waits until “unlocked”. If the information is “non-locked”, the process proceeds to STEP 603.

(STEP603)
Operator reads the two-dimensional code 43 or 44 of the facility state display device 4 in the exposure state in the information terminal 3 ₁ of the camera. The two-dimensional code 43 or 44 includes at least an equipment state ID and processing content information (valve open / close, switch ON / OFF, etc.).
The client program, embedded in the two-dimensional code, equipment state ID, the name of the device, location, and acquires information such as the processing content information, stored in the information terminal 3 ₁ of the storage device, is displayed. The operator can look at these information, to check whether there is any mistaking the operation target device 20 _1.

(STEP604)
The client program, collates the information recorded in the processing content column processing content information and the operation target apparatus ₂₀₁ included in the two-dimensional code read by the STEP 603. If they match as a result of the collation, a display of successful authentication is displayed on the screen, and the process proceeds to STEP 605. If they do not match, an authentication failure display is displayed on the screen. In the case of authentication failure, since the operation target device 20 has an error, the worker moves to the correct operation target device 20 (proceeds to STEP 601).

(STEP605)
The client program, to be displayed on the special tool and a display unit of the information terminal 3 ₁ expertise information etc. such properties such as valves required for operation in addition to the operation target device ₂₀₁ of the operation manual. Information such as an operation manual is provided in the form of an electronic book or PDF, for example.

(STEP606)
Operator performs reference to the operation of the operation target apparatus ₂₀₁ and information such as displayed operation manuals in STEP 605.

(STEP607)
After the operation of STEP606 is complete, move the processing content (open / closed and switches ON / OFF, etc. of the valve) in accordance with the target device 20 the movable member 45 of the equipment status display device 4 attached to ₁ was carried The position is switched (if it was in the first position before the operation, it is moved to the second position, and if it was in the first position, it is moved to the second position). Since the equipment status indicator 4 is displayed as “open” / “closed” or the like at the first or second position with coloring, even those who do not have the information terminals 3 _{1 to} 3 _X can also visually observe. glance to the target device 20 ₁ of the state is known.

(STEP608)
The operator reads the two-dimensional code 43 or 44 of the facility state display device 4 in the exposure state in the information terminal 3 ₁ of the camera (two-dimensional code reading here is a different two-dimensional code from the STEP 601.).

(STEP609)
The client program, collates the information recorded in the processing content column processing content information and the operation target apparatus ₂₀₁ included in the two-dimensional code read by Step 608. If they match as a result of the verification, a display of successful authentication is displayed on the screen, and the process proceeds to STEP 610. If they do not match, an authentication failure display is displayed on the screen. If authentication fails, the work procedure has an error, and the worker moves to STEP 606 or 607 to perform a correct work.

(STEP610)
The client program records the treatment time in the treatment record column corresponding to the operation target device ₂₀₁ of the equipment state ID. As described above, the values of the treatment record column and the equipment state column can be easily updated by reading the two-dimensional code with the camera, and an input operation such as a plurality of button operations is unnecessary.

(STEP611)
The client program sends update information to the replication server 2 and requests to update the operation procedure table 11 on the replication server 2.
Replication server 2 server program, the information terminal 3 ₁ from receiving an update request to reflect the updated information to the operation procedure table 11. The server program also performs the same processing in parallel for update requests from the information terminals 3 _{2 to} 3 _{X of} other workers, and updates the operation procedure table 11. Thereby, it becomes possible to collectively manage the statuses of the operation target devices 20 _{2 to} 20 _x and the progress of the operation items.

(STEP612)
The client program acquires the operation procedure table 11 updated by the replication server 2 and updates the operation procedure table 11 in the information terminals 3 _{2 to} 3 _X. Receiving data between the information terminal 3 ₁ and the master server 1, a difference value, it is preferable to shorten the communication time data amount is minimized.
In the operation procedure table 11, the client program updates the lock flag information corresponding to the operation item number having the same number as the interlock number recorded in the row in which the treatment date and time is recorded to “unlocked”. As a result, the interlock of the operation item is released.

(STEP613)
Replication server 2 on the operation procedure table 11 updated in again, is acquired in the information terminal 3 _1, routings table based on the operation procedure table 11 that is updated is displayed on the display unit.

(STEP614)
Based on the information displayed in STEP 612, the worker determines whether all the operation items are completed. If there is a work in charge of the worker, the worker goes to the installation location of the next operation target device and performs the work after STEP 601. Do.
When all the operation items are completed or when there is no more work in charge, the worker ends the client program and the maintenance work ends.

As described above, according to the plant maintenance operation support system of the present embodiment, since the two-dimensional code is imaged by the camera of a general-purpose information terminal and processed by software, a dedicated reader required in a system using an IC tag or RFID is unnecessary, Since it is not easily affected by interference, it is possible to construct a low-cost system with high reading accuracy.
Further, since the two-dimensional code can be read and collated before and after the operation and the operator's button input or the like can be omitted, a simple and reliable interlock process can be performed.
Furthermore, the equipment state display tool 4 enables an operator or a person concerned to recognize the state of the device at a glance with the naked eye.

<< Second Embodiment >>
A plant maintenance operation support system according to a second embodiment of the present invention will be described. Below, the description about the part similar to 1st embodiment is omitted, and it demonstrates focusing on a different part.
<Configuration>
The difference between the configuration of the first embodiment is that the databases of the master server 1 and the replication server 2 have the operation prohibition tag management table 13 and that the operation prohibition tag 300 is added to the operation target devices 20 _{1 to} 20 _Y. It is a point attached to. Other configurations are the same as those of the first embodiment.

  As shown in FIG. 8, the operation prohibition tag management table 13 imports information recorded on the operation prohibition tag 300 and information such as the issue status created by general-purpose spreadsheet software and stores them in a table format. This is for the purpose of management of the operation prohibition tag 300 by the worker and the administrator.

As shown in FIG. 9, the operation prohibition tag 300 is attached to the operation target devices 20 _{1 to} 20 _Y in order to display the operation prohibition of the devices in accordance with the conventional maintenance work.
As shown in FIG. 10, the operation prohibition tag 300 is provided with a cut line 301 and a cut line 302, and information on maintenance work is displayed in the upper area 303 and the lower area 304 with the cut line 302 as a boundary and “operation prohibited” display. , For example, work name, device name, installation location, work content, date of installation, and verification number. And two-dimensional codes 305a and 305b including these pieces of information are printed together.

The tear line 301 has a circular shape, and a hole can be formed in the bill by cutting off the area inside the tear line 301. Further, the lower region 304 can be cut along the cut line 302.
Further, the operation prohibition tag 300 is subjected to water resistance processing so as to prevent contamination due to water or oil in the facility.
The two-dimensional codes 305a and 305b are QR codes (registered trademark) in which the same information is stored, and include a unique equipment state ID, processing content information, and the like.

Hereinafter, the work procedure of the system according to the present embodiment will be described with reference to FIGS. 11 and 12.
<Work procedure>
The operation of one worker in the power generation plant using the system according to the present embodiment will be described as an example.
In the following explanation, it is assumed that the equipment is to be brought down for inspection from the steady operation state, and that the equipment is started up and returned to the steady operation state after completion of the inspection. It shall operate the operation target apparatus ₂₀₁ with reference to 3 _1.

[Advance preparation]
(STEP 1000)
The operator operates the master server 1, reads the operation prohibition tag management table 13 stored in the master server 1, and checks the collation number assigned to each work completion. Are printed on the operation prohibition tag 300 by the printer 9.
In the operation prohibition tag management table 13, the printed tag verification number. The tag status column for is updated to “issued ticket”, and the tag verification No. The tag status column for is updated to “unissued”.
After the operation of the device is completed, the worker cuts off an area inside the cut line 301 of the operation prohibition tag 300, opens a hole, and prepares it through a rubber band or the like.

[When falling]
(STEP 1001)
The operator has information terminal 3 ₁ and the operation prohibition tag 300 moves to the installation site of the operation target device 20 _1. Then, launch an information terminal 3 _1, start the client program.
(STEP 1002)
The client program obtains operation procedure table 11 and the operation prohibition tag management table 13 from the replication server 2, and displays the information terminal 3 _1.

(STEP 1003)
The operator operates the device according to the operation procedure table 11.
Operator reads the two-dimensional code 305 of stub operation restrictions tag attached to the operation target device ₂₀₁ in the camera.
(STEP 1004)
The operation prohibition tag 300 is attached to the device through a rubber band or the like.
The worker cuts the area 304 under the operation prohibition tag 300 along the cut line 302 of the operation prohibition tag 300 and stores it as a stub.

(STEP1005)
The operator determines whether all the operation items are completed, and when there is his own work, the worker goes to the installation location of the next operation target device and performs the work after STEP 1000.
When all the operation items are completed or when there is no more work in charge, the worker ends the client program and the maintenance work ends.

[At startup]
(STEP1100)
The operator, launched an information terminal 3 _1, start the client program.
(STEP1101)
The client program obtains operation procedure table 11 and the operation prohibition tag management table 13 from the replication server 2, and displays the information terminal 3 _1.
(STEP1102)
Operator reads the two-dimensional code 305 of the operation prohibition tag 300 attached to the operation target apparatus ₂₀₁ in the camera.

(STEP1103)
The client program collates the two two-dimensional codes read in STEP1102.
As a result of the collation, if the information matches, the process proceeds to STEP 1104. If the information does not match, the process returns to STEP 1101.

(STEP 1104, STEP 1105)
Operator operates the operation target apparatus ₂₀₁ in accordance with an operation procedure table 11, recovers the operation prohibition tag 300. Operating procedures operation target apparatus _201, since already been described for the first embodiment, description thereof is omitted.

(STEP1106)
The client program sets the control No. in the operation prohibition tag management table 13. Is updated to “collected”, and the operation prohibition tag management table 13 on the replication server 2 is requested to be updated in the same manner.
(STEP 1107)
The worker refers to the operation prohibition tag management table 13 to determine whether or not all operation items have been completed, and when there is his / her work, he / she goes to the installation location of the next operation target device and performs the work after STEP 1000. Do.
If all the operation items are completed, or if there is no more work in charge, the worker ends the client program and the maintenance work ends.

  As described above, according to the plant maintenance operation support system of the present embodiment, a two-dimensional code is incorporated into work using a conventional operation prohibition tag, and is imaged with a camera of a general-purpose information terminal and processed by software. Compared to this, the work is facilitated and there is an effect of preventing erroneous input.

  Although the embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the description of the embodiment. Various modifications / improvements can be added to the above-described embodiments, and forms to which such modifications or improvements are added are also included in the technical scope of the present invention.

1 Master Server 2 Replication Server 3 ₁ to 3 _X information terminal 4 equipment state display device 5, 6 LAN
7 Wireless LAN base unit 8 Wireless LAN
9 printer 20 ₁ to 20 _Y operation target apparatus 40 body 41 first display 42 second display unit 43 first two-dimensional code 44 second two-dimensional code 45 movable member 46 wire 200 VPN
300 Operation Prohibited Tag 301 Cut Line 302 Cut Line 303 Upper Area 304 Lower Area 305a, 305b Two-dimensional Code

Claims (6)

An arithmetic device, a network module, a server program, a server provided with a storage device for storing a database, and
A plurality of information terminals equipped with an arithmetic device, a display unit, an input unit, a camera, a storage device storing a client program, and a wireless communication module;
A plurality of equipment status indicators attached to the operation target device;
A plant maintenance operation support system comprising:
The equipment status indicator is a first display unit colored in a first color, a second display unit colored in a second color, and a first two provided in the first display unit. Display the first position and the second display part which display the first code part and hide the second display part, the second two-dimensional code provided on the second display part, and the second display part. A movable member that reciprocates in a second position that hides one display portion,
The first two-dimensional code includes a unique equipment state ID and processing content information,
The second two-dimensional code includes unique equipment state ID and processing content information different from the first two-dimensional code,
An operation in which the database includes a column for storing an operation number, a column for storing an equipment state ID, a column for storing processing contents, a column for storing equipment treatment records, and a column for storing an operation number to be unlocked A procedure table, a column that stores a unique facility state ID, and a facility state management table that includes a column that stores processing content information associated with the facility state ID on a one-to-one basis,
The client program is
Information acquisition means for acquiring the operation procedure table from the server via a network, and imaging a two-dimensional code with the camera of the information terminal, the equipment state ID and processing content information included in the two-dimensional code and the acquired The equipment state ID and the processing content information in the operation procedure table are collated, and when the collation information matches and the lock flag information is unlocked, the equipment state ID is associated with the equipment state ID of the storage device of the information terminal. A treatment updating means for updating the column storing the equipment treatment record to the treated and sending a request for updating the column storing the equipment treatment record to the treated,
Interlock information generating means for dynamically generating lock information having a locked or unlocked value for each operation number;
When the action update unit updates a column storing the equipment action record, and the operation number associated with the updated column is an interlock release target, the operation of the storage device of the information terminal Lock information updating means for updating the value of the lock information associated with the number to non-lock,
A plant maintenance operation support system comprising: Furthermore, an installation piece having a third two-dimensional code, and an operation prohibition tag having a third two-dimensional code and comprising a cut piece joined to the installation piece via a cut line,
The database includes an operation prohibition tag table having a column for storing an equipment state ID and a column for storing an installation record,
The information acquisition means of the client program can acquire the operation prohibition tag table,
When the third two-dimensional code is imaged by the camera, the client program updates the column storing the installation record of the storage device of the information terminal to the installed and installs the column storing the installation record The plant maintenance operation support system according to claim 1, further comprising prohibition tag management means for transmitting a request to update to the server to the server.   The plant maintenance operation support system according to claim 1 or 2, wherein the two-dimensional code is a QR code (registered trademark). The two-dimensional code includes the name of the operation target device and information on the installation location,
The said client program displays the name of an operation target apparatus, and the information of an installation place on the said information terminal, when the said two-dimensional code is imaged with the said camera. Plant maintenance operation support system. The database includes information on a work manual associated with an equipment state ID;
The information acquisition means of the client program can acquire the work manual,
5. The work program according to claim 1, wherein when the first or second two-dimensional code is imaged by the camera, the client program displays a work manual on a display unit of the information terminal. The plant maintenance operation support system described.   When the client program acquires the value of the column storing the lock information attached to the equipment state ID included in the captured two-dimensional code, and the value is in the locked state, the display unit of the information terminal The plant maintenance operation support system according to any one of claims 1 to 5, further comprising means for displaying that the interlock is being performed.