JPH06309249A - Data communication monitoring device of distributed data processor - Google Patents

Abstract

PURPOSE:To exactly and quickly detect data on a detailed matter of a communication fault by inputting monitoring data from a data communication circuit by a simple type data processor, inferring a data communication state with regard to the detailed matter from the monitoring data and a knowledge data base of communication fault information, and outputting the result of inference to the outside. CONSTITUTION:Monitoring data outputted from a central plant data recording/ monitoring processor 1 is unputted to a communication arithmetic control part 10 of a simple type data processor 4 through a network 3. A communication knowledge part 12 stores a rule of a prescribed condition and a conclusion, and also, stores inferred and accumulated knowledge data as a knowledge data base. In such a state, first of all, in the communication arithmetic control part 10, with regard to the monitoring data, the inference is executed in accordance with the rule, and from the result of this inference and the knowledge data base accumulated in the communication knowledge part 12, a data communication state is further inferred. Subsequently, fault information is stored in a main storage part 9, and also, outputted to a CRT 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention monitors a data communication circuit in a distributed data recording / monitoring device comprising a central plant data recording / monitoring processing device and a simplified data processing device connected via a network. The present invention relates to a data communication monitoring device for a distributed data processing device.

[0002]

2. Description of the Related Art Conventionally, in a simplified data processing device arranged in a distributed hierarchy and connected by a network, when transmission and communication of plant data by the network is disabled due to a cause such as a program stop or failure, In order to investigate the cause, a dedicated monitoring program built into the distributed data recording / monitoring device was used to detect abnormalities in various hardware.

For example, a dedicated monitoring program in the central plant data recording / monitoring processing device outputs monitoring signals to the corresponding simplified data processing devices in sequence via a network, and the simplified data processing device transmits the data to the central device. The occurrence of communication faults is detected based on the time delay of monitoring signals returning to the plant data recording / monitoring processing unit and changes in signals. Then, when an abnormality of communication failure occurs, efforts have been made to investigate the cause.

[0004]

However, the above-mentioned conventional monitoring device for data communication cannot detect the details of the communication failure promptly.

First, according to the conventional device, although the communication failure can be detected, the details of the failure location and the failure status are not known, and the data communication is normally performed because of an abnormality due to a software bug. Whether or not it could not be reliably detected. For this reason, it is necessary to make a detailed judgment by a human system by recording a data communication status record showing each data flow, connecting a measuring instrument, or the like, which requires a great deal of labor.

Therefore, the maintenance worker cannot promptly and clearly determine the cause of the runt data transmission / communication failure, which causes a delay in plant data processing work and a decrease in data transmission efficiency.

Further, since the program for monitoring the communication system is incorporated in the main body of the central plant data recording / monitoring processing device, not only the system abnormality due to the bug of the monitoring program but also the bug of other programs It is difficult to detect the system abnormality caused by.

That is, the central plant data recording / monitoring processing device performs various data processing in addition to the original monitoring of plant data, and the monitoring program is processed in the gap between these processings. Even if an abnormality occurs, it is impossible to stop other processing and perform a detailed diagnosis of the system abnormality.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a data communication monitoring device for a distributed data processing device which can detect the details of a communication failure accurately and quickly.

[0010]

SUMMARY OF THE INVENTION The present invention provides a simplified data processing device for recording and processing plant data, and data received by the simplified data processing device via a data communication line. Central plant data recording / monitoring system that comprehensively records and monitors central plant data recording / monitoring processing device
The monitoring processing device includes means for outputting monitoring data for detecting a failure in the data communication line to the data communication line, and the simplified data processing device communicates with the means for inputting monitoring data from the data communication line. A communication knowledge unit for accumulating fault information as a knowledge database, and a communication operation control unit for determining the data communication state from the monitoring data and the knowledge database and outputting the data to the outside are provided.

[0011]

With the above configuration, the central plant data recording / monitoring processing unit outputs monitoring data for detecting a failure in the data communication line to the data communication line. On the other hand, in the simplified data processing device, monitoring data is input from the data communication line. Then, the communication calculation control unit infers the data communication state from the knowledge database of the communication failure information and the monitoring data with respect to the detailed items, and outputs the inference result to the outside. For this reason, the details of the failure location and failure status are known, and it is not necessary to make detailed judgments by humans by recording data communication status records showing the flow of each data or connecting measuring instruments as in the past. Factors causing business stagnation and reduced data transmission efficiency were reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a distributed data processing apparatus showing an embodiment of the present invention. The distributed data processing device is configured to be connected to a plurality of simplified data processing devices 4 via a central plant data recording / monitoring processing device 1, a modem 2 and a network 3.

Further, the central plant data recording / monitoring processing device 1 is connected to other data recording / monitoring processing devices A and B to record the communication status of plant data with the central plant data recording / monitoring processing device 1. The recording / monitoring processing device A and the central plant data recording / monitoring processing device 1 and the data recording / monitoring processing device B exchange record of plant data communication status with each other.

Central plant data recording / monitoring processing device 1
Issues a uniform data reception request, receives the plant data transmitted from each simplified data processing device 4, performs a certain process, and outputs and stores the result.

As shown in FIG. 2, the simplified data processing device 4 includes a network communication control unit 5, a terminal control unit 6 and an I / O.
The interface unit 7, the calculation control unit 8, the main storage unit 9, the communication calculation control unit 10, the CRT 11, the communication knowledge unit 12, and the alarm output device 13 are included.

Here, the network communication controller 5 outputs data to the network 3 via the modem 2 and inputs data via the modem 2.
The terminal control unit 6 controls and inputs / outputs data via the network communication control unit 5. The I / O interface section 7 inputs the plant signal 14 as an interface.

The arithmetic control unit 8 performs a comparative arithmetic process on the plant signal 14 and preset data to perform the plant signal 1
4 is for determining normality or abnormality. Main memory 9
Stores the plant signal 14 and communication data. The communication knowledge unit 12 stores rules, knowledge data, and the like as a knowledge database.

With the above configuration, the plant signal 14 is I / O.
It is input to the arithmetic control unit 8 via the interface unit 7. The arithmetic control unit 8 compares and calculates the plant signal 14 and preset data, displays the result on the CRT 11, and outputs the result to the alarm output device 13 when the plant signal 14 is abnormal. Further, the processing signal of the arithmetic control unit 8 is read by the terminal control unit 6 and edited according to the communication procedure of the network communication control unit 5, and then the central plant data is recorded / recorded via the modem 2 and the network 3.
It is transmitted to the monitoring processing device 1.

On the other hand, the monitoring data output from the central plant data recording / monitoring processor 1 is the network 3
Is input to the network communication control unit 5 of the simplified data processing device 4 via. This monitoring data is sent to the terminal controller 6
Is input to the communication calculation control unit 10. In the communication operation control unit 10, the data communication state is inferred by the processing procedure as shown in FIG.

First, when the monitoring data is received, the monitoring data is compared with preset data to determine whether or not the data is normal (101) (102). As a result, if the monitoring data is normal data, it is stored in the main storage unit 9 (103). If the monitoring data is abnormal in the above judgment, the fault information is inferred as follows (1
04).

That is, the communication knowledge unit 12 stores the conditions and conclusion rules not shown, and also stores the inferred and accumulated knowledge data as a knowledge database. First, the communication arithmetic and control unit 10 performs inference on the monitoring data according to the rule, and further infers the data communication state from the inference result and the knowledge database accumulated in the communication knowledge unit 12. Then, the failure information is stored in the main storage unit 9 and is output to the CRT 11 (103) (105). In this case, when the failure information is insufficient, a maintenance staff or the like inputs the information by an interactive means (not shown) and requests an inference for the information, and by repeating this, the inference is performed on the details of the failure information. As a result, details of the data communication failure such as whether the network 3 is abnormal or the modem 2 is abnormal are found.

As described above, the simplified data processing device inputs the monitoring data from the data communication line, infers the data communication state from the monitoring data and the knowledge database of the communication failure information about the detailed matters, and outputs the inference result. Since it is notified to the outside, it is not necessary for the human system to make a judgment by using a tester or a measuring instrument as in the past. Therefore, it is possible to significantly reduce the factors that cause a delay in plant data processing operations and a decrease in data transmission efficiency. Further, since the simplified data processing device 4 makes a determination based on the knowledge database, no specialized knowledge is required, and since the knowledge database is sequentially added, a more accurate determination can be made.

[0024]

As described above, according to the present invention, the simplified data processing device inputs the monitoring data from the data communication line, and the data communication status is determined from the monitoring data and the knowledge database of the communication failure information. Since detailed information is inferred and the inference result is notified to the outside, it is not necessary for the human system to make a judgment by connecting a tester to the site as in the past. Therefore, it is possible to significantly reduce the factors that cause a delay in plant data processing operations and a decrease in data transmission efficiency.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a distributed data processing device showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a simplified data processing device provided in the distributed data processing device of FIG.

FIG. 3 is a flowchart showing a processing procedure of a communication calculation control unit in FIG.

[Explanation of symbols]

 1 Central plant data recording / monitoring processing device 2 Modem 3 Network network 4 Simple data processing device 5 Network communication control unit 6 Terminal control unit 7 I / O interface unit 8 Arithmetic control unit 9 Main storage unit 10 Communication arithmetic control unit 11 CRT 12 Communication Knowledge Department 13 Alarm Output Device 14 Plant Signal A, B Data Recording / Monitoring Processing Device

Claims (1)

[Claims] 1. A simplified data processing device for recording and processing plant data, and a central plant for receiving data processed by this simplified data processing device via a data communication line and comprehensively recording and monitoring the data. In a data communication monitoring device of a distributed data processing device for monitoring a data communication state of a distributed data processing device comprising a data recording / monitoring processing device, the central plant data recording / monitoring processing device is a failure of the data communication line. Is provided with means for outputting monitoring data for detecting to the data communication line, the simplified data processing device, means for inputting the monitoring data from the data communication line, and communication failure information as a knowledge database. A communication knowledge unit that accumulates, infers a data communication state from the monitoring data and the knowledge database, Communication monitoring system distributed data processing apparatus characterized by comprising a communication operation control unit for outputting a logical result to the outside.