JP2003051894A - Work management system for plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work management system for plants, which can easily manage the works corresponding to a fault of devices in the field in a plant and its operating state. SOLUTION: A leased transmission line, not a public digital line, interconnecting a system controller (or personal computer) 4, a telephone controller (exchange) 7, and a wireless phone relay station (base station) 2 are installed in the plant, the system controller 4 collects a defect and an operating state of a device 31 in the field in the plant, converts the character data for a work instruction corresponding to the signal into a protocol such as the P mail or the dot eye of a wireless phone (PHS or mobile phone) and transmits the protocol to the wireless phone 30 of an operator at the site via the phone controller 7 and the wireless phone relay station 2. Further, the system controller 4 receives a work completion report from the wireless phone 30 and recognizes the completion of the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant work management system for transmitting and receiving character information using a wireless telephone.

[0002]

2. Description of the Related Art FIG. 11 shows an in-plant information communication system disclosed in Japanese Patent Laid-Open No. 10-262120.
In this conventional apparatus, a surveillance camera 1 and a wireless telephone relay station 2 are arranged at a plant work site, and a worker carries an information portable terminal 10 having a telephone function and an image input / output function.
Further, a system controller 4 having a display, a database server, etc. is arranged in the control room, and is connected to the site side by the data transmission device 3.

From the work site side, communication with the control room is performed by voice, image and text data through the portable information terminal 10. It is provided with a function of providing guidance on the information portable terminal 10 when moving to the site and an emergency response function of instructing work or evacuation in an emergency. Further, the portable information terminal 10 can be connected to the work measuring device 16 and can transmit the data of the work measuring device 16. Furthermore,
The data transmission device 3 is connected to the telephone controller 7 as an interface with the telephone 11.

Further, FIG. 12 is a diagram of Japanese Unexamined Patent Publication No. 2001-3665.
This is the message transfer system disclosed in Japanese Patent No. 8 publication.
In this conventional technique, information of the mechanical equipment 53 is collected by a message transfer system (personal computer) 54, and the mobile communication terminal (PHS or mobile phone) is transmitted via the public digital line 56 via the mobile communication terminal simple character communication compatible modem 52. Telephone) 58
Send the equipment status as a text message to. In addition, in order to prevent omission of notification due to power failure of the mobile communication terminal 58, character information is transmitted to the plurality of mobile communication terminals 58.

[0005]

[Problems to be Solved by the Invention]
In the conventional system disclosed in Japanese Patent No. 58, since a public digital line is used, there is a problem that a call charge is required every time information on mechanical equipment is transmitted. Further, in order to prevent omission of notification, it is necessary to transmit the character data to a mobile communication terminal that does not require notification.

The present invention has been made in order to solve the above-mentioned problems, and uses a generally used mobile phone or PHS without using a line requiring a call charge such as a public line. The purpose of the present invention is to provide a plant work management system for instructing and reporting various works. Another object is to prevent data from being transmitted to mobile terminals that do not require notification.

[0007]

(1) According to claim 1 of the present invention, a system controller for monitoring field equipment of a plant, a telephone exchange having a telephone exchange function, a radio telephone relay station, and a worker. A system including a mobile phone carried by a mobile phone or a wireless telephone such as PHS, and a transmission line that connects the system controller and the wireless telephone relay station via the telephone exchange with a dedicated line separate from a public line. The system controller inputs status signals such as operation signals and failure signals of the field devices, and outputs a work instruction corresponding to the input to work instruction information of a transmission protocol used in a mobile phone and PHS. The data is converted and transmitted to the telephone exchange through the transmission line, and the telephone exchange receives the work instruction information,
Transmitting to the wireless telephone relay station via the transmission line, the wireless telephone relay station wirelessly transmits the transmitted work instruction information, the wireless telephone receives the wirelessly transmitted work instruction information, When a work completion report corresponding to the received work instruction information is input to and transmitted to the wireless telephone, the system controller receives it via the wireless telephone relay station, the telephone exchange, and the transmission line, and the completion of the work is completed. To recognize.

(2) According to a second aspect of the present invention, in the work management system according to the first aspect, the system controller is provided with the function of the telephone exchange, and the telephone exchange is omitted. It converts into work instruction information of a transmission protocol used by the mobile phone, PHS or the like corresponding to the instruction and transmits it by using the telephone exchange function.

(3) According to claim 3 of the present invention, in the work management system for a plant according to claim 1 or 2, the system controller performs the work within a predetermined time after issuing the work instruction. When the work completion report corresponding to the instruction is not received, the work instruction is transmitted again, or another place is notified, or a predetermined alarm is displayed.

(4) According to claim 4 of the present invention, in the work management system according to any one of claims 1 to 3, the signal of the work instruction is a number / symbol corresponding to the work content. The simple identification code is registered in advance and the simple identification code is used instead of the work instruction.

(5) According to claim 5 of the present invention, in the work management system according to any one of claims 1 to 4, when the work completion report or the like is input from the wireless telephone and transmitted. If there is an input error in, the special symbol is set as a command to restore the data before this input error, and if the above special symbol is sent from the wireless telephone, the received system controller will receive the data before the input error. It was set back to.

(6) According to a sixth aspect of the present invention, in the work management system for a plant according to any one of the first to fifth aspects, the system controller stores position information of each wireless telephone to be managed. When transmitting a work instruction by providing a function of acquiring, the wireless telephone at the most appropriate position corresponding to the work instruction is selected and transmitted by referring to the position information.

(7) According to a seventh aspect of the present invention, in the work management system according to any one of the first to sixth aspects, the system controller does not send the work instruction and the wireless communication is performed. When the work completion report is received from the telephone, the reception date and time and the received wireless telephone are grasped and managed together with the work completion report.

(8) According to the eighth aspect of the present invention, in the work management system according to any one of the first to seventh aspects, various measured values and equipment states acquired during the patrol inspection in the plant. The inspection result of the above is transmitted from the wireless telephone to the system controller, and the system controller manages the inspection result data.

[0015]

Embodiment 1. First Embodiment Embodiment 1 of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 2 denotes a wireless telephone relay station (base station) which relays signals transmitted and received by the wireless telephone 30. 4 is a system controller capable of using a personal computer or a server, 6 and 8 are transmission lines, which are dedicated lines different from public lines and are installed in the plant. Reference numeral 7 is a telephone controller (exchange), and 9 is a signal line such as a field network or a contact signal line. Reference numeral 31 is a field device of the plant, which usually has a large number of various field devices, and an operation signal, a failure signal or the like is input to the system controller 4.

Next, the operation will be described. (1) System controller 4 (may be a personal computer)
Is the IS for the built-in telephone controller (exchange) 7.
It is connected to the transmission line 6 via a digital line compliant interface (not shown) such as DN. (2) The system controller 4 collects a failure signal or an operation signal from the field device 31 in the plant via the signal line 9 (field network or contact signal line),
The content is converted into a character transmission protocol of the wireless telephone 30 such as P-mail or dot i and transmitted to the telephone controller 7.

P-mail is a method of sending by sub-address and is a standardized P-mail specification of DDI pocket in the PHS industry. Dot i is the Internet provided by the Astel Group on the Astel PHS network. TCP / I, which is the standard protocol used in
P, PPP, POP3, SMTP, HTTP, C-HT
It is an open Internet service that adopts an open standard such as an HTML subset including ML.

(3) The telephone controller (switch) 7 is directed to the radio telephone relay station (base station) 2 corresponding to the radio telephone 30 which transmits the data transmitted by the character transmission protocol via the transmission line 6. It is transmitted via the transmission line 8. (4) The radio telephone relay station (base station) 2 transmits a radio signal to the radio telephone 30 (PHS, mobile telephone). (5) Upon receiving the work instruction, the site worker of the wireless telephone 30 transmits a completion report from the wireless telephone 30 to the system controller 4 when the work is completed. (6) The system controller 4 receives the work completion report and recognizes that the work corresponding to the work instruction transmitted from the self system controller 4 is completed. It is confirmed that there is no omission of work by managing in this way.

FIG. 2 is a flow chart of the work management software in the system controller, showing the main processing contents of work management. . In the work instruction transmitting module, when there is a failure in equipment or an abnormality in the operation value (S1), the work instruction is transmitted (S), the transmission flag of the transmitted work instruction is set (S3), and the state is indicated as the work instruction. Describe in the management table. When the work instruction receiving module receives the work completion report (T1, T2), it resets the transmission flag of the work instruction corresponding to the received work completion report (T3),
The state is described in the work instruction management table.

According to the first embodiment of the present invention, communication is carried out between the system controller and the telephone and a work instruction or an alarm notification is sent in accordance with a standard protocol such as P-mail or dot-eye that a general wireless telephone has. Because I chose
As a mobile terminal, a general-purpose mobile phone or a wireless telephone such as PHS can be applied. Further, since data transmission is performed according to the standard P-mail or dot-eye protocol that a general wireless telephone has as a standard, it is possible to construct a system only with a telephone controller (exchange) without the need for a data transmission device.

Since the transmission line uses a dedicated line different from the public line and the protocol used is a digital line compliant protocol such as ISDN, it is not necessary to connect to the public digital line in the plant, and a call is made. You can send text messages for free. Further, the system controller receives the message for confirming the reception of the work completion from the wireless telephone, so that the conventional system (see Japanese Patent Laid-Open No. 2001-366).
In 58, the notification can be confirmed without sending a text message to a mobile communication terminal that does not need to be notified, such as a mobile communication terminal).

Embodiment 2. As shown in FIG. 3, the system controller 4 is equipped with a hardware interface board of a wireless telephone relay station such as a BRI board, and has a private telephone exchange function for transmitting voice and character information that the telephone controller 7 has. Equipped with commercially available switch software used. Since the function of the installed switchboard software includes not only the interface function with the outside that interfaces with the telephone but also the interface function that can send and receive character data from other software, delete the telephone controller 7. You can

The BRI board is "Basic R
The abbreviation for "ate Interface board" is a basic interface board.
It is a standard interface defined by ITU-T (formerly CCITT), and the NTT INS net 64 is provided by this basic interface.

According to the second embodiment, the system controller is equipped with exchange software having the function of a commercially available telephone controller, and this exchange software also includes an interface for transmitting and receiving character data with other software. And BRI on the system controller
By mounting and connecting a wireless telephone relay station interface such as that described above, a telephone controller becomes unnecessary, and the system can be constructed at a lower cost than in the first embodiment.

Embodiment 3. If there is no response for a certain period of time after sending a work instruction from the system controller 4,
It is also possible to send the work instruction to the worker again as the work is not completed, or to send the data to the wireless telephone of the manager. FIG. 4 shows a flowchart in which a flow for transmitting the work instruction again or transmitting the data to the administrator (another destination) is added to FIG. 2.

S1 to S3 and T1 to T3 are the same as in FIG. After the transmission flag is set (T4),
When the arbitrary time which is the maximum waiting time has elapsed (T5) and the number of transmissions is within the set arbitrary number of transmissions (T6), the data is retransmitted to the same mobile terminal (T7, T8). ), Or send to another mobile terminal (T
9, T10). The different mobile terminal means to notify the operator of the terminal closest to the same mobile terminal to confirm whether the operator having the same mobile terminal has received the work instruction or not. The contents may be such as whether or not there is. Alternatively, the mobile terminal of the administrator may be notified. T5-T10
In step (4), the setting is changed as appropriate, and the transmission content is changed according to the situation.

According to the third embodiment, when no response is received within a certain time, the wireless telephone is retransmitted, the wireless telephone of the administrator is notified, or both of them are performed to prevent the omission of work. it can.

Fourth Embodiment It takes time for the worker to input the work contents in characters, so it is easy to define the number corresponding to each work in advance, input the number, and recognize the work completion report corresponding to the number in the system controller 4. The work completion report can be sent to. For example, when an arbitrary serial number is determined in advance for each work instruction content and a work completion report is made, the work completion can be confirmed by transmitting the number determined for each work instruction content from the mobile terminal. it can. Also, when the work instruction is given from the system controller 4, the input may be simplified by using the set number.

According to the fourth embodiment, a worker can easily create a work completion report by predetermining a number for the work content and inputting the corresponding number when the work is completed.

Embodiment 5. Special characters can be prepared and restored to the previous data so that the operator can cancel the completion report when he / she makes an input error. Note that the special characters shown here are, when sending the work completion report, added a unique character string in the system (such as "zz") to the beginning of the completion report (completion report with input error) and cancel it. Treat as data. Then, after cancellation, the correct completion report with no typo is sent.

FIG. 5 shows a flow chart in which the cancel processing flow is added to FIG. When the received work completion report is displayed with the special number (T11), the work instruction transmission flag corresponding to the received special number is set again (T12) and set to receive the work instruction-completion report. The work completion report corresponding to the special number is deleted from the database (not shown).

According to the fifth embodiment, since the work completion report can be canceled when an input error is made, it is possible to deal with the input error by the site worker.

Sixth Embodiment The system controller 4 periodically collects the intensity of radio waves between each radio telephone relay station 2 and the mobile terminal 30, and estimates the location of each mobile terminal 30. Based on the location information of the mobile terminal 30, the system controller 4 identifies the mobile terminal in a predefined area for each work instruction and transmits the character data of the work instruction to perform the work of the generated work instruction. It is possible to automatically determine the worker who is in the most suitable place to give a work instruction.

FIG. 6 shows a flowchart in which a transmission destination determining flow is added to FIG. The intensity of the radio wave between each radio telephone relay station 2 and the mobile terminal 30 is periodically collected, and each mobile terminal 30
A "work instruction-transmission location correspondence table" prepared by estimating the location is prepared, and the transmission destination is determined by referring to this table (S4).

According to the sixth embodiment, the position information system of the wireless telephone is used to automatically judge the field worker at the most appropriate place and send the work instruction. Eliminates the need to artificially judge field workers.

Embodiment 7. Even if there is no instruction from the system controller 4, the site worker reports the work completion from the wireless telephone 30 when each work is completed, and the system controller 4 manages the work completion report together with the time and the number of the wireless telephone 30. Therefore, the work content of each worker can be managed.

Flowcharts in which the work management flow is added to FIG. 6 are shown in FIGS. By displaying the work report content for each mobile terminal number from the "work instruction-completion report reception database" in this flow, the work content of the mobile terminal (worker holding the mobile terminal) is managed / displayed in time series. I can do things.

It should be noted that the step of T13 "work instruction-delete previous data (corresponding to special number) of work completion report database" is added to the flowchart of FIG. 8 because there is no instruction from the controller 4. However, when the work completion report data is transmitted from the wireless telephone 30, it is unknown whether the flag is set or reset. Therefore, only the setting / resetting of the flag cannot be applied and the step of T13 is provided. ing.

According to the seventh embodiment, even if there is no work instruction, the site worker transmits the work completion report by the wireless telephone, and the system controller which receives the work completion report indicates the reception date and time, the work content and the reported wireless telephone. By grasping and managing, it is possible to easily grasp the progress of work and confirm the work content of the site worker.

Embodiment 8. Further, during or after the inspection inspection in the plant, the inspection inspection data can be managed by inputting the state of the equipment or the measured value from the wireless telephone 30. When transmitting the equipment status or measurement value from a mobile terminal, a unique character string (such as "kei") previously defined by the system is added to the beginning of the data to be transmitted, as in the fifth embodiment. By sending it, it indicates that it is the state of the equipment or the measured value. 9 and 10 are flowcharts in which the flow of the management process of the state of the equipment and the measured value is added to FIGS. 7 and 8.

According to the eighth embodiment, when the inspection inspection work is performed, the worker transmits the inspection inspection data such as the condition of the equipment and the measured value by the wireless telephone, and the system controller which receives the inspection manages the inspection inspection data. Can be done easily.

[0042]

(1) According to claim 1 of the present invention, a free private line is used for intra-plant communication instead of a pay public line, and a commercially available mobile phone or wireless telephone such as PHS is used. Since it will be used, you can build an economical system.

(2) According to claim 2 of the present invention, the telephone controller (exchange) is not required, so that the system can be constructed at low cost.

(3) According to claim 3 of the present invention, when there is no response within a certain period of time, an instruction is sent again to the wireless telephone or a notification is given to the wireless telephone of the administrator, thereby overlooking the work. Can be prevented.

(4) According to claim 4 of the present invention, by inputting the number corresponding to the work at the time of creating the work completion,
A work completion report can be easily created.

(5) According to the fifth aspect of the present invention, when the work completion report having an erroneous input is transmitted, the work completion report can be canceled, so that it is possible to cope with the erroneous input by the site worker.

(6) According to claim 6 of the present invention, the position information of the wireless telephone is used to automatically determine the wireless telephone of the site worker in the most appropriate place and transmit the work instruction. As a result, it is not necessary to artificially judge the appropriate field worker.

(7) According to claim 7 of the present invention, when the system controller receives the work completion report without a work instruction, the system controller grasps and manages the date and time of the reception, the work contents and the reported wireless telephone. Therefore, it is possible to easily grasp the progress of the work and confirm the work content of the site worker.

(8) According to the eighth aspect of the present invention, the state of the equipment and the measured value at the time of the inspection inspection work are transmitted from the wireless telephone to the system controller, and the system controller manages the data, so that the system controller can easily perform the operation. You can manage inspection data.

[Brief description of drawings]

FIG. 1 is a block diagram of a plant work management system according to a first embodiment of the present invention.

FIG. 2 is a flowchart of the plant work management system according to the first embodiment of the present invention.

FIG. 3 is a block diagram of a plant work management system according to a second embodiment of the present invention.

FIG. 4 is a flowchart of a plant work management system according to a third embodiment of the present invention.

FIG. 5 is a flowchart of a plant work management system according to a fifth embodiment of the present invention.

FIG. 6 is a flowchart of a plant work management system according to a sixth embodiment of the present invention.

FIG. 7 is a flowchart of a plant work management system according to a seventh embodiment of the present invention.

FIG. 8 is a continuation flowchart of the plant work management system according to the seventh embodiment of the present invention. 14 is an example of a flowchart of Example 7.

FIG. 9 is a flowchart of a plant work management system according to an eighth embodiment of the present invention.

FIG. 10 is a subsequent flowchart of the plant work management system according to the eighth embodiment of the present invention.

FIG. 11 is a system block diagram of a conventional technique (Japanese Patent Laid-Open No. 10-148694).

FIG. 12 is a system block diagram of a conventional technique (Japanese Patent Laid-Open No. 2001-36658).

[Explanation of symbols]

2 wireless telephone relay station (base station), 3 data transmission device, 4 system controller,
7 telephone controllers (exchanges), 11 telephones,
16 work measuring equipment, 30
Wireless telephone (PHS or mobile phone) 31 Field device.

Claims (8)

[Claims] 1. A system controller for monitoring a field device of a plant, a telephone exchange having a telephone exchange function, a radio telephone relay station, a mobile telephone carried by a worker or a radio telephone such as PHS, and a public line. Another dedicated line constitutes a system including the system controller and a transmission line connecting the radiotelephone relay station via the telephone exchange, and the system controller includes an operation signal and a failure signal of the field device. State signal, converts the work instruction corresponding to the input into work instruction information of a transmission protocol used in a mobile phone, PHS, etc., and transmits the work instruction information to the telephone exchange through the transmission line. The telephone exchange receives the work instruction information and transmits the work instruction information to the radio telephone relay station via the transmission line. Wirelessly transmits the transmitted work instruction information, the wireless telephone receives the wirelessly transmitted work instruction information, and a work completion report corresponding to the received work instruction information is input to the wireless telephone and transmitted. Then, the system controller receives via the wireless telephone relay station, the telephone exchange, and the transmission line,
A plant work management system characterized by recognizing the completion of work. 2. The plant work management system according to claim 1, wherein the system controller is provided with the function of the telephone exchange, the telephone exchange is omitted, and the system controller is the mobile telephone and PHS corresponding to a work instruction. A work management system for a plant, which is converted into work instruction information of a transmission protocol used in, for example, and transmitted using the telephone exchange function. 3. The plant work management system according to claim 1 or 2, wherein the system controller must receive a work completion report corresponding to the work instruction within a predetermined time after issuing the work instruction. , A work management system for a plant, which transmits a work instruction again, reports to another place, or displays a predetermined alarm. 4. The work management system for a plant according to claim 1, wherein a simple identification code such as a number or a symbol corresponding to the work content is registered in advance, and the work completion report is made. A work management system using the simple identification code. 5. The plant work management system according to claim 1, wherein if there is an input error when the work completion report or the like is input and transmitted from the wireless telephone, this input is performed. A special symbol is set as a command for returning to the data before the mistake, and when the special symbol is transmitted from the wireless telephone, the received system controller returns to the data before the input mistake. Plant work management system. 6. The plant work management system according to any one of claims 1 to 5, wherein the system controller has a function of acquiring position information of each wireless telephone to be managed, and sends a work instruction. In this case, the plant work management system is characterized in that the wireless telephone at the most appropriate position corresponding to the work instruction is selected and transmitted by referring to the position information. 7. The plant work management system according to claim 1, wherein the system controller receives a work completion report from the wireless telephone without transmitting the work instruction. Is a work management system characterized by grasping and managing the date and time of reception and the wireless telephone which has received together with the work completion report. 8. The plant work management system according to any one of claims 1 to 7, wherein from the wireless telephone, inspection results such as various measurement values and equipment states acquired during patrol inspection in the plant are obtained. A work management system for a plant, which transmits to the system controller, and the system controller manages the inspection result data.