JP2002111705A - Remote plant monitoring control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote plant monitoring control system that can present appropriate information to an operator, and has further improved reliability than a conventional system. SOLUTION: A monitoring control section 4 and a radio communication interface 5 are provided individually at each device 3 such as a sensor and a switch that are installed at each kind of equipment in a plant, the device 3, the monitoring control section 4, and the radio communication interface 5 are integrated and are composed as a monitoring communication control unit 2, and transmission data memory map M is transmitted by radio while itenerating between monitoring communication control units 2 belonging to each group G1, G2, etc. Also, a bus interface 6 is provided at one monitoring communication control unit 2 that becomes a representative in the monitoring communication control unit 2 existing in each group G1, G2, or the like, and the bus interface 6 is connected to a central monitoring control device 8 by a cable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant remote monitoring and control system for remotely transmitting data in order to perform monitoring and control requiring high reliability like a nuclear power plant.

[0002]

2. Description of the Related Art There is a conventional plant remote monitoring and control system having a configuration as shown in FIG. 9 (for example, see Japanese Patent Application Laid-Open No. 8-152914). In this plant remote monitoring and control system, devices 100 such as sensors and switches are provided for various devices in a plant, and the status of various devices is monitored and controlled by inputting and outputting data to and from each device 100. Monitoring control device 102 is provided. A plurality of devices 100 are attached to one monitoring and control apparatus 102, and each monitoring and control apparatus 102 is assigned to its group G1, G
The devices 100 that belong to 2,...

Further, this plant remote monitoring and control system includes a central monitoring and control device 104 for monitoring the entire system based on information notified from each of the monitoring and control devices 102. Each of the above groups G1, G2,. The supervisory control device 102 is connected to the central supervisory control device 104 via a wired data bus 106 or the like.

[0004] When acquiring a process quantity, which is a main measurement quantity of various equipment to be monitored and controlled by the plant, the monitoring and control apparatus 102 detects and outputs the detection output of the device 100 attached to the measurement location of the various equipment in the plant. Is wirelessly sampled at a predetermined period, and the data collected by the sampling is transmitted to the central monitoring and control device 104 in a lump. The command from the central monitoring and control device 104 is transmitted to the monitoring and control device 102 via the data bus 106.
The supervisory control device 102 wirelessly transmits the command to the corresponding device 100 to execute a command such as turning on / off a switch. In this way, remote monitoring control is performed by transmitting and receiving data.

[0005]

In the conventional plant remote monitoring and control system, as described above, the monitoring and control device 102
Manages many devices 100 belonging to the groups G1, G2,. That is, conventionally, each group G
, G2,..., Only a single supervisory control device 102 is provided. For example, if the data sampling function of the supervisory control device 102 of a certain group G1 fails, all devices 10 belonging to that group G1 will fail.
Since data cannot be sampled for 0, the whole system is hindered.

As described above, in the conventional system, a failure of one monitoring and control device 102 affects the entire system.
There were still insufficient aspects in ensuring the reliability of the plant remote monitoring and control system.

[0007] The present invention solves the above-mentioned problems, and a device such as a sensor or a switch installed in various equipment of a plant has a monitoring control function, whereby one failure develops into a failure of the entire system. It is an object of the present invention to provide a plant remote monitoring and control system in which the reliability is further improved as compared with the conventional system.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. In the invention according to claim 1, in a plant remote monitoring and control system that monitors and controls the state of the equipment by a plurality of devices such as sensors and switches installed in various equipment of the plant, A monitoring control unit and a wireless communication interface are provided individually for each,
These are integrated with each other to form a supervisory communication control unit, a plurality of supervisory communication control units are provided in a group, and at least one of the supervisory communication control units included in one group is provided. While the monitoring communication control unit includes a bus interface, the monitoring communication control unit includes a central monitoring control device that monitors the entire system based on information from each monitoring communication control unit, and the monitoring control unit configuring the monitoring communication control unit includes: A transmission data memory map in which detection data obtained by the device and instruction data for the device are stored at a predetermined address, and the device is controlled based on data included in the transmission data memory map. The wireless communication interface is generated by the monitoring control unit. Transmitting and receiving the transmission data memory map to and from a wireless communication interface of another monitoring communication control unit, wherein the bus interface is connected to the central monitoring and control device by a wire, and communicates with the device. The transmission data memory map is transmitted and received.

According to a second aspect of the present invention, in the plant remote monitoring and control system according to the first aspect of the present invention, at least a plurality of supervisory communication control units of the supervisory communication control units belonging to one group are provided to the plant. The control unit is provided with a bus interface, and each bus interface is connected to the central monitoring and control device by a wire.

According to a third aspect of the present invention, in the plant remote monitoring and control system according to the first or second aspect, each of the wireless communication interfaces provided in the monitoring and communication control unit is a plurality of other wireless communication interfaces. And emits a radio signal that can be received simultaneously.

A plant remote monitoring and control system according to a fourth aspect of the present invention is the plant remote monitoring and control system according to any one of the first to third aspects, wherein a plurality of the central monitoring and control devices are installed, and the monitoring communication control is performed. The bus interface of the unit is connected to each central monitoring and control device by wire.

According to a fifth aspect of the present invention, in the plant remote monitoring and control system according to any one of the first to fourth aspects, the central monitoring and control device is provided with a central-side wireless communication interface. On the other hand, the monitoring communication control unit does not include any bus interface, but is configured such that each wireless communication interface wirelessly communicates with a central-side wireless communication interface of the central monitoring control device. It is characterized by having.

According to a sixth aspect of the present invention, in the plant remote monitoring and control system according to the fifth aspect, the central monitoring and control device and a central wireless communication interface attached to the central monitoring and control device are compactly integrated so as to be portable. It is characterized by becoming

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1. FIG. 1 is a configuration diagram of a plant remote monitoring and control system according to Embodiment 1 of the present invention.

In the plant remote monitoring and control system 1 according to the first embodiment, various devices 3 for detecting and operating sensors and switches are installed in various equipments of the plant. A monitoring control unit 4 and a wireless communication interface 5 are provided for each of the three. The device 3, the monitoring control unit 4, and the wireless communication interface 5 are integrated with each other to form the monitoring communication control unit 2.

Each of these monitoring communication control units 2
Are combined to form one group G1, G2,
, And one representative supervisory communication control unit of the plurality of supervisory communication control units 2 existing in each group G1, G2,.
A bus interface 6 is provided in the uppermost unit 2 of G2,. Each group G1, G
Are not necessarily the same for each of the groups G1, G2,..., But the number differs according to various devices to be monitored and controlled in the plant.

The plant remote monitoring and control system 1 further includes a central monitoring and control device 8 for monitoring the entire system. The central monitoring and control device 8 is a representative of each of the groups G1, G2,. The bus interface 6 provided for each is connected via a wired data bus 11.

The monitoring control unit 4 constituting each monitoring communication control unit 2 stores detection data obtained by a detection device 3 such as a sensor and command data for an operation device 3 such as a switch at a predetermined address. A stored transmission data memory map M as shown in FIG. 2 is generated, and an operation device 3 such as a switch is controlled based on data contained in the transmission data memory map M.

That is, if there is command data corresponding to the device 3 for operation such as a switch from the received transmission data memory map M, the monitoring control unit 4 extracts the command data and operates the device 3. On the other hand, if there is plant detection data obtained by the detection device 3 such as a sensor, it is sampled and the detected data is stored at a predetermined address on the transmission data memory map M. I have. Therefore, the transmission data memory map M is configured as a kind of data packet in which the detection data and the instruction data are stored at the address positions corresponding to the devices 3 such as the sensors and switches belonging to the groups G1, G2,. .

The wireless communication interface 5 transmits the transmission data memory map M generated by the monitoring control unit 4 to the wireless communication interface 5 of another monitoring communication control unit 2 belonging to the same group. And a transmission data memory map M wirelessly transmitted from another wireless communication interface 5. Further, the bus interface 6 is configured to transmit and receive the transmission data memory map M to and from the central monitoring and control device 8 via the data bus 11.

Next, the operation of the plant remote monitoring and control system 1 having the above configuration will be described. Each group G
, G2,..., The operation of the monitoring communication control unit 2 is basically the same.
The description will be made focusing on.

The central monitoring and control device 8 interprets a target switch based on a control signal operated by an operator and stores the data in a predetermined address on a corresponding transmission data memory map M. The map M is transmitted via the data bus 11 to the bus interface 6 of the monitoring communication control unit 2 at the uppermost stage, which is a representative in the group G1.
To communicate.

The bus interface 6 transfers the received transmission data memory map to the supervisory control unit 4 in the supervisory communication control unit 2 at the uppermost stage. In the case of the first embodiment, the device 3 attached to the monitoring control unit 4
Is a device for detection such as a sensor, the monitoring control unit 4 samples the detection data of the plant acquired by the device 3 for detection, and performs the sampling on the transmission data memory map M acquired earlier. After storing data at a predetermined address corresponding to the device 3, the transmission data memory map M is transferred to the wireless communication interface 5.

The wireless communication interface 5 stores the transferred transmission data memory map M in the same group G
1 and wirelessly transmitted to the wireless communication interface 5 of the monitoring communication control unit 2 at the next stage.

Thus, the uppermost monitoring communication control unit 2
Is received by the wireless communication interface 5 of the monitoring communication control unit 2 at the next stage, the wireless communication interface 5 stores the acquired transmission data memory map M in the wireless communication interface M. The information is transferred to the monitoring control unit 4 integrated with 5.

In the case of the first embodiment, the device 3 attached to the monitoring control unit 4 of the monitoring communication control unit 2 in the second stage
Is an operating device such as a switch, so that the monitoring control unit 4 extracts the corresponding command data from the transmission data memory map M, if any, and integrates it with the monitoring control unit 4. Output to an operating device 3 such as a switch. Therefore, the operating device 3 operates according to the instruction data.

Further, since the monitoring control unit 4 transfers the transmission data memory map M to the wireless communication interface 5 again, the wireless communication interface 5 further stores this transmission data memory map M in the monitoring communication control unit 2 in the next stage.
Transmitted wirelessly to.

When the processing at the lowermost supervisory communication control unit 2 belonging to the group G1 is completed, the wireless communication interface 5 of the lowermost supervisory communication control unit 2 sends the uppermost supervisory communication control unit 2 The transmission data memory map M is transmitted to the wireless communication interface 5 of FIG. The above operation is repeated in the group G1.

Then, the monitoring communication control unit 2 in the uppermost stage
Receives the transmission data memory map M from the lowermost monitoring communication control unit 2, and in the same manner as described above, the monitoring control unit 4 sends the received transmission data memory map M
And transfers the received transmission data memory map M to the bus interface 6. The bus interface 6 transmits the transmission data memory map M to the central monitoring and control device 8 via the data bus 11.

Therefore, the central monitoring and control device 8 monitors the entire plant remote monitoring and control system 1 based on the transmission data memory map M sent from the monitoring and communication control unit 2 which is representative of each group G1, G2,. can do.

As described above, in the first embodiment, the monitoring control unit 4 and the radio communication interface 5 are provided for each device 3 individually.
5 are integrated and configured as a monitoring communication control unit 2,
Moreover, between the supervisory communication control units 2 included in each group G1, G2,..., The transmission data memory map M is transmitted by radio while constantly circulating.

Therefore, for example, in a certain supervisory communication control unit 2 in the group G1, if the supervisory control unit 4 fails in the data sampling function for the device 3, the transmission data memory map M Although one data content corresponding to the device 3 attached to the failed monitoring control unit 4 cannot be rewritten or lost, the other monitoring communication control unit 4
If the data is sound, no problem occurs in other data contents. That is, even if one of the supervisory communication control units 2 fails, the influence on the entire system is extremely small, and the reliability can be improved as compared with the related art.

Embodiment 2 FIG. 3 is a block diagram of a plant remote monitoring and control system according to Embodiment 2 of the present invention, in which parts corresponding to those of Embodiment 1 shown in FIG. .

The feature of the second embodiment is that each group G
, G2,..., A plurality (here, two stages from the top) of the supervisory communication control units 2
Is provided with a bus interface 6. The other configuration is the same as that of the first embodiment shown in FIG. 1, and thus the detailed description is omitted here.

As described above, in the second embodiment, the monitoring communication control unit 2 belonging to each group G1, G2,.
Of the plurality of monitoring communication control units 2, the bus interface 6 is provided.
Even if one of the bus interfaces 6 included in the supervisory communication control unit 2 belonging to 1 fails, if the remaining bus interfaces 6 are sound, the central supervisory control device 8
Since the transmission data memory map M can be transmitted and received between the first embodiment and the second embodiment, the reliability can be further improved as compared with the case of the first embodiment.

Third Embodiment FIG. 4 is a configuration diagram of a plant remote monitoring and control system according to a third embodiment of the present invention, and portions corresponding to those of the second embodiment shown in FIG.

The feature of the third embodiment is that each group G
The transmission data memory map M wirelessly transmitted from the wireless communication interface 5 configuring the monitoring communication control unit 2 is simultaneously received by the other plurality of wireless communication interfaces 5 for 1, G2,. is there. For example, when the transmission data memory map M is transmitted from the wireless communication interface 5 of the monitoring communication control unit 2 in the uppermost stage, the transmission data memory map M is simultaneously received by the wireless communication interfaces 5 in the second and third stages. I have.

Here, since each wireless communication interface 5 receives the transmission data memory map M transmitted from the other plurality of wireless communication interfaces 5, as shown in FIG. The information of the data update time T is further added to the map M, and when the transmission data memory map M is fetched, the monitoring control unit 4 updates the latest data based on the information of the data update time T. I am trying to adopt it. The other configuration is the same as that of the second embodiment shown in FIG. 3, and the detailed description is omitted here.

As described above, in the third embodiment, the transmission data memory map M transmitted from one monitoring communication control unit 2 in each group G1, G2,.
.. Are simultaneously received by the wireless communication interfaces 5 of the other plurality of supervisory communication control units 2, and one of the supervisory communication control units 2 in each group G1, G2,. Also, since the transmission data memory map M itself is not lost, the reliability of the entire system can be further improved as compared with the case of the second embodiment.

Embodiment 4 FIG. 6 is a block diagram of a plant remote monitoring and control system according to Embodiment 4 of the present invention, in which parts corresponding to those of Embodiment 3 shown in FIG. .

The feature of the fourth embodiment is that the third embodiment is different from the third embodiment.
, A plurality of central monitoring and control devices 8 for monitoring the entire system are provided, and each of the central monitoring and control devices 8 is connected to the bus interface 6 of the monitoring communication control unit 2 of each group G1, G2,. Are connected to each other via the data bus 11. Other configurations are
Since it is the same as that of the third embodiment shown in FIG. 4, detailed description is omitted here.

By adopting such a configuration, a plant can be monitored and controlled by a plurality of operators, and a large plant can be monitored and controlled. Also, by providing a plurality of central monitoring and control devices 8, even if one central monitoring and control device 8 fails, another central monitoring and control device 8
, The monitoring control can be continued, so that the continuous operation can be performed, and the reliability of the whole monitoring control of the plant can be improved.

Embodiment 5 FIG. 7 is a block diagram of a plant remote monitoring and control system according to Embodiment 5 of the present invention, in which parts corresponding to those of Embodiment 4 shown in FIG. .

The fifth embodiment is characterized in that a central-side wireless communication interface 9 is provided for each of a plurality of central monitoring and control devices 8 individually, while each group G1,
Neither of the monitoring communication control units 2 of G2,... Is provided with the bus interface 6, and instead, the wireless communication interface 5 of each monitoring communication control unit 2 is connected to the above-mentioned central side wireless communication interface 9. Are configured to communicate with each other wirelessly. Therefore, in the fifth embodiment, the data bus 11 as in each of the first to fourth embodiments is omitted between the central supervisory control device 8 and the supervisory communication control unit 2. Other configurations are the same as those of the fourth embodiment shown in FIG.
In this case, the detailed description is omitted here.

As described above, in the fifth embodiment, the central-side wireless communication interface 9 of the central supervisory control device 8 and the wireless communication interface 5 of the supervisory communication control unit 2
Since all data communication with the system is performed wirelessly, in this plant remote monitoring and control system, it is not necessary to lay a cable such as a data bus, and the cost can be reduced.

Embodiment 6 FIG. 8 is a block diagram of a plant remote monitoring and control system according to Embodiment 6 of the present invention, in which parts corresponding to those of Embodiment 5 shown in FIG. .

The feature of the sixth embodiment is that the fifth embodiment
In this configuration, the central monitoring and control device 8 and the wireless communication interface 9 are compactly integrated so as to be portable and configured as a portable driving device 12. The other configuration is the same as that of the fifth embodiment shown in FIG. 7, and the detailed description is omitted here.

As described above, in the sixth embodiment, when the plant is maintained, the operator carries the portable operating device 12 near various equipments of the plant that need to be monitored and controlled, and the central monitoring and control device 8 Can be used for control and monitoring, and thus the maintainability of various devices in the plant can be improved.

[0049]

According to the plant remote monitoring control system of the first aspect of the present invention, a monitoring control unit and a wireless communication interface are individually provided for each device, and these are integrated as a monitoring communication control unit. In addition, since the wireless communication is performed while constantly circulating through the transmission data memory map between the supervisory communication control units belonging to each group, one of the supervisory control units constituting the supervisory communication control units in the group is configured. Even if a failure occurs, the influence on the entire system is extremely small, and the reliability can be improved as compared with the related art.

According to the plant remote monitoring and control system according to the second aspect of the present invention, since a plurality of supervisory communication control units in the supervisory communication control units belonging to each group are provided with a bus interface, one of the bus interfaces fails. Even in this case, the remaining bus interfaces operate normally and can transmit and receive the transmission data memory map to and from the central monitoring and control device, so that the reliability of the entire system can be further improved.

According to the plant remote monitoring control system of the third aspect, the transmission data memory map transmitted from one monitoring communication control unit is simultaneously received by the wireless communication interfaces of the other plurality of monitoring communication control units. Therefore, the possibility of wireless transmission is improved. For this reason, even if one of the monitoring communication control units in each group fails and a part of the data is lost,
Since the transmission data memory map itself is not lost, the reliability of the entire system can be further improved.

According to the plant remote monitoring and control system according to the fourth aspect of the present invention, since a plurality of central monitoring and control devices are provided, the plant can be monitored and controlled by a plurality of operators, and a large plant can be monitored. It becomes possible to control. Further, even if one central monitoring and control device fails, monitoring and control can be continued by another central monitoring and control device, so that continuous operation is possible, and the reliability of the entire monitoring and control of the plant can be improved. .

According to the plant remote monitoring and control system according to the fifth aspect of the present invention, all data communication between the central wireless communication interface of the central monitoring and control device and the wireless communication interface of the monitoring communication control unit is performed wirelessly. In addition, it is not necessary to lay a cable such as a data bus between the two, and the cost can be reduced.

According to the plant remote monitoring and control system according to the sixth aspect of the present invention, the operator can carry the portable operation device, carry it to an arbitrary place, and perform control and monitoring by the central monitoring and control device. Maintainability of various devices can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a plant remote monitoring and control system according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a transmission data memory map transmitted and received in the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a plant remote monitoring and control system according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a plant remote monitoring and control system according to a third embodiment of the present invention.

FIG. 5 is an explanatory diagram of a transmission data memory map transmitted and received in a third embodiment of the present invention.

FIG. 6 is a configuration diagram of a plant remote monitoring and control system according to a fourth embodiment of the present invention.

FIG. 7 is a configuration diagram of a plant remote monitoring and control system according to a fifth embodiment of the present invention.

FIG. 8 is a configuration diagram of a plant remote monitoring control system according to Embodiment 6 of the present invention.

FIG. 9 is a configuration diagram of a conventional monitoring control system.

[Explanation of symbols]

1 plant remote monitoring and control system, 2 monitoring and communication control unit, 3 devices, 4 monitoring and control unit, 5 wireless communication interface, 6 bus interface, 8
Central monitoring and control device, 9 Central side wireless communication interface, 11 Data bus, 12 Portable operation device, M
Transmission data memory map, T update time.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 9/00 301 H04Q 9/00 311T 311 321C 321D 341B 321 H04L 11/00 310C G08C 17/00 Z 341F Term (reference) 2F073 AA12 AA33 AB01 BB01 BB04 BC01 BC02 BC04 CC03 CC05 CC07 CC12 DD04 DD07 DE13 EF09 FG02 GG01 GG06 2F076 BA14 BE07 BE09 BE18 5H223 AA03 DD05 DD07 DD09 EE06 EE29 5K048 AA07 GA02 DB02 GA03 DB02

Claims (6)

[Claims] 1. A plant remote monitoring and control system for monitoring and controlling the state of equipment by using a plurality of devices such as sensors and switches installed in various equipment of a plant. A monitoring control unit and a wireless communication interface are provided, and these are integrated with each other to form a monitoring communication control unit, and a plurality of monitoring communication units are provided in a group, and are included in one group. At least one of the supervisory communication control units includes a bus interface,
A monitoring and control unit that monitors the entire system based on information from the monitoring and communication control unit, wherein the monitoring and control unit configuring the monitoring and communication control unit includes detection data obtained by the device and command data for the device. Generates a transmission data memory map stored at a predetermined address, and controls the device based on the data included in the transmission data memory map.The wireless communication interface is controlled by the monitoring control unit. The generated transmission data memory map is transmitted and received to and from a wireless communication interface of another monitoring communication control unit, and the bus interface is connected to the central monitoring and control device by a wire, and communicates with the device. Transmitting and receiving the transmission data memory map between Plant remote monitoring and control system according to claim. 2. A bus interface is provided for at least a plurality of supervisory communication control units of the supervisory communication control units belonging to one group with respect to the plant, wherein each bus interface is wired and connected to a central supervisory control unit. The plant remote monitoring and control system according to claim 1, wherein the system is connected. 3. The wireless communication interface provided in the monitoring communication control unit emits a wireless signal that can be received simultaneously by a plurality of other wireless communication interfaces. Plant remote monitoring and control system. 4. A plurality of central monitoring and control devices are provided,
4. The plant remote monitoring and control system according to claim 1, wherein the bus interface included in the monitoring and communication control unit is connected to each central monitoring and control device by a wire. 5. . 5. The central monitoring and control device is provided with a central-side wireless communication interface, while each of the monitoring and communication control units does not include a bus interface, but each wireless communication interface is connected to the central monitoring and control device of the central monitoring and control device. The plant remote monitoring control system according to any one of claims 1 to 4, wherein the system is configured to wirelessly communicate with the side wireless communication interface. 6. The plant remote monitoring and control system according to claim 5, wherein the central monitoring and control device and a central wireless communication interface attached thereto are compactly integrated so as to be portable.