JPH062881U - Plant monitoring equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a plant monitoring device that ignores the status signal from equipment when the status signal transmission unit fails. [Arrangement] The central processing unit is provided with an abnormal signal detector that can detect a failure of the status signal transmitter of the equipment and ignore the status signal from the equipment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plant monitoring device having a function of automatically detecting a failure of a status signal transmitting section of equipment and not detecting a status change signal or a failure signal.

[0002]

[Prior art]

 FIG. 3 is a block diagram of a conventional plant monitoring device. In the figure, 1 is a central processing unit, 2 is a terminal device, 3 is a facility device, 4 is a display device, 5 is a printer device, 6 is a keyboard, 7 is a state change processing unit, 9 is a key input reading / reading unit, and 10 is A maintenance setting processing unit, 11 is a device monitoring unit, and 12 is a status signal transmitting unit.

Next, the operation will be described. A plurality of terminal devices that are connected to a plurality of equipment devices 3 installed in the plant equipment and monitor and control them are connected to a central processing unit 1 that integrally monitors and controls each of the plurality of equipment devices 3. The central processing unit 1 does not communicate with the terminal unit 2 and collects various kinds of monitoring control information regarding the terminal unit 2 which directly monitors and controls the equipment 3 and transmits the control information from the central processing unit 1 to the terminal unit 2. Then, the central processing unit 1 centrally monitors and controls the terminal unit 2 and the equipment 3. Further, at the time of maintenance of the equipment 3 and the like, the equipment 3 under maintenance by the central processing unit 1 can be set to be out of the scope of monitoring and control and be in maintenance. Status signals for equipment under maintenance are ignored by the central processing unit.

[0004]

[Problems to be solved by the device]

 Since the conventional plant monitoring apparatus is configured as described above, when the status signal transmission unit 12 of the equipment 3 fails and the status change signals are being transmitted one after another, the central processing unit 1 sets maintenance settings. Until it is performed, the load of the central processing unit 1 and the communication becomes large, and it becomes difficult to monitor and control other equipment.

The present invention has been made in order to solve the above problems, and can automatically detect a failure of the status signal transmission unit of the equipment, and can also detect the status signal when the status signal transmission unit fails. The purpose is to obtain a plant monitoring device to ignore.

[0006]

[Means for Solving the Problems]

 The plant monitoring apparatus according to the present invention is provided with an abnormal signal detecting section for automatically performing maintenance setting when the status signal transmitting section fails.

[0007]

[Action]

 The abnormal signal detector of the plant monitoring device according to the present invention automatically sets the maintenance when the status signal transmitter fails and ignores the status signal.

[0008]

【Example】

 Example 1. Hereinafter, a plant monitoring apparatus according to a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a central processing unit, 2 is a terminal, 3 is a facility device, 4 is a display device, 5 is a printer device, 6 is a keyboard, 7 is a state change processing unit, 8 is an abnormal signal detection unit, and 9 is A key input reading unit, 10 is a maintenance setting processing unit, 11 is a device monitoring unit, and 12 is a status signal transmitting unit.

Next, the operation will be described. When the status signal transmission unit 12 fails and status change signals are transmitted one after another, the abnormal signal detection unit 8 counts the number of signals within a certain period of time, and when more than a certain number of signals are transmitted, the status signal transmission is performed. It is determined that the unit 8 is out of order, and the maintenance setting is performed for the failed device 3. Since the status signal of the equipment 3 which has been set for maintenance is ignored by the central processing unit, the influence on the supervisory control of other equipment is eliminated.

Example 2. FIG. 2 is a diagram showing a plant monitoring apparatus according to an embodiment of the present invention. The terminal may be provided with an abnormal signal detecting section 8 to detect a failure on the terminal apparatus 2 side. In this case, even if a failure occurs in the status signal transmission unit 12, the processing can be performed only by the terminal device 2 that monitors and controls the target device, so that the central processing device 1, the terminal device 2, the central processing device 1, and the terminal device 2 are processed. It does not affect the communication between them.

[0011]

[Effect of device]

 As described above, according to the present invention, when a failure occurs in the status signal transmission section of the equipment, the abnormal signal detection section automatically detects the abnormal signal and performs maintenance setting for the failed apparatus. Since the configuration is provided, it is possible to obtain a plant monitoring device that can reduce the load of the central processing unit and communication.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a plant monitoring apparatus according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a plant monitoring apparatus according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional plant monitoring device.

[Explanation of symbols]

 1 Central processing unit 2 Terminal device 3 Field equipment (equipment equipment) 4 Display device 5 Printer device 6 Keyboard 7 Condition change processing unit 8 Abnormal signal detection unit 9 Key input reading unit 10 Maintenance setting processing unit 11 Equipment monitoring unit 12 Status signal transmission Department

Claims (2)

[Scope of utility model registration request] 1. In a plant monitoring device for monitoring facility equipment controlled by a terminal device from a central processing unit, when a failure of a status signal transmitting section of the facility equipment is detected, the status signal from the facility equipment is ignored. A plant monitoring device, wherein an abnormal signal detecting section is provided in the central processing unit. 2. A plant monitoring device for monitoring facility equipment controlled by a terminal device from a central processing unit, and ignores a status signal from the facility equipment when a failure of a status signal transmission section of the facility equipment is detected. A plant monitoring device, wherein an abnormal signal detecting unit is provided in the terminal device.