JPH0636630B2 - Central supervisory control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a central supervisory control system for monitoring a plurality of connected devices.

[Prior Art] Conventionally, when a terminal as a child device monitors a connected device and an abnormality of the device is detected, a central supervisory control for notifying a supervisory control device as a master of the abnormality content and the like. The system is known.

This central supervisory control system is configured such that at least one master unit and a plurality of slave units are linked using a public line or the like, and an abnormality of a plurality of devices at distant places is immediately detected. It provides the effect of being able to monitor multiple remote devices as if they were at hand.

Inventions and proposals relating to the central supervisory control system include:
JP-A-61-243245 and JP-A-61-242
No. 153, etc. can be mentioned.

[Problems to be Solved by the Invention] However, the following problems have been considered in the conventional central supervisory control system. That is, (a) the conventional central monitoring and control system can detect an abnormality or an abnormal state of the device connected to the terminal,
It is not possible to know the progress of equipment abnormalities or changes over time. For this reason, there is a problem that the service person may not be able to take appropriate or prompt measures, or a problem that appropriate preventive action cannot be taken before the device has fallen into an abnormal state, (b) When a device abnormality occurs, the conventional central monitoring and control system can only know that it is an abnormality. Since it is not possible to pursue the details of the abnormality in more detail, it is suitable as in (a) above. It was thought that there was a problem that they could not deal with such problems.

The central supervisory control system of the present invention solves the above problems,
The purpose is to perform more detailed monitoring of devices connected to a child device as a terminal device.

Configuration of the Invention [Means for Solving the Problems] A central supervisory control system of the present invention has a master unit having a transmitting / receiving function as a supervisory control device and connected equipment, as shown in the basic configuration of FIG. A central supervisory control system comprising: a plurality of slave units which monitor data of the master unit and transmit data to the master unit in response to a call of the master unit or when necessary. The device is provided with a storage unit for storing the operation data of the device only when the device satisfies a predetermined condition indicating that the device is normal.

[Operation] In the present invention configured as described above, the storage unit stores the operation data of the device only when the device monitored by the slave unit satisfies the predetermined condition indicating that the device is normal. Therefore, when the device becomes abnormal, the storage unit stores the transition of the operation data until just before the device becomes abnormal.

[Embodiment] Next, a preferred embodiment will be described with reference to the drawings in order to further clarify the configuration of the central supervisory control system of the present invention.

As shown in FIG. 2, the central supervisory control system of the present embodiment schematically includes a master unit (hereinafter referred to as a master station) 1 as a supervisory controller arranged in a monitoring center and each site. And a plurality of slave units (hereinafter, referred to as slave stations) 3 that monitor and control the diesel generator 2 in this embodiment. The master station 1 and the plurality of slave stations 3 have a built-in modem. The telephone or the modem alone (hereinafter referred to as a modem) 4 is linked via a public line.

The master station 1, as shown in FIG.
It is configured as a logical operation circuit in which the OM 11 and the RAM 12 are mainly connected to the external input / output circuit 13 and the data converter 14 by a bus 15 to form a so-called personal computer.

The data converter 14 converts a signal output from the connected modem 4 into data used by the CPU 10, and converts data output by the CPU 10 for the modem 4.

In addition to the CRT display, keyboard and external storage device forming a personal computer, the external input / output circuit 13 has a function of indicating which site slave station 3 is issuing an alarm. A board 16, a printer 17 having a book table function, a tape recorder 18, and the like are connected.

The slave station 3, as shown in FIG.
The PU 20, the ROM 21, and the RAM 22 are the main components, the data converter 23, and the parallel input / output circuit (hereinafter referred to as PIA).
24) are mutually connected by a bus 25, and various converters 26 to 33 and two multiplexers 34 are also provided.
And 35, an analog / digital converter (hereinafter referred to as A / D converter) 36, a digital / analog converter (hereinafter, referred to as “A / D converter”)
It is configured as a logical operation circuit including a D / A converter) 37, a power supply circuit 38, and the like. The power supply circuit 38 converts a commercial power supply and supplies drive power to the CPU 20 and the like.

A modem 4 is connected to the data converter 23.
The data converter 23 functions similarly to the data converter 14 of the master station 1 described above.

The output signals of the converters 26 to 28 are input to the PIA 24 via the multiplexer 34 and the A / D converter 36, and the output signals of the converter 29 are directly input.
Further, the PIA 24 is connected to the converters 31 to 33 via the D / A converter 37 and the multiplexer 35, and is also directly connected to the converter 30.

The converters 26 to 29 output the output voltage of the diesel generator 2 via the voltage sensor 40, output current via the current sensor 41, water temperature or oil temperature via the resistance sensor 42, and various contact points via the contact sensor 43. Each voltage is output according to the open / closed state. Thereby, the CPU 20 can detect the operation data indicating the operation state of the diesel generator.

On the other hand, the converters 30 to 33 are respectively connected to various relays, exciting coils, various drive circuits, etc. of the diesel generator 2. As a result, the CPU 20 can drive and control the diesel generator.

The operation of this embodiment having the above configuration will be described with reference to the flowcharts shown in FIGS. The "menu routine" shown in FIG. 5 and the "counterpart station telephone response operation routine" shown in FIG. 6 show the processing performed by the CPU 10 of the master station 1. Also, the "slave station basic routine" shown in FIG. 7 and the "master station interrupt routine" shown in FIG.
The processing performed by the PU 20 is shown. Here, first, the "menu routine" for determining the operation of the entire system of this embodiment will be described.

The "menu routine" is roughly divided into "slave station operation information setting routine", "slave station management schedule setting routine" and "monitor routine", and "slave station operation information setting routine" is further divided into "slave station information setting routine". And “slave station operation program setting routine”.

The "slave station information setting routine" is a routine for setting / changing the information that each slave station 3 should have, as shown as step 100.

That is, in step 100, the information to be detected and stored by each slave station 3, the level determination condition, the conversion coefficient, etc. are set.
For example, in this embodiment, as the information to be detected and stored, the output voltage, output current, oil temperature, water temperature, hydraulic pressure, winding temperature, bearing temperature, commercial power supply voltage and current, etc. of the diesel generator 2 are set. To be done. Judgment conditions are such that the fluctuation of each rated value is ± %% or more, and ± %% or more is abnormal, and the fluctuation range of each temperature of the diesel generator 2 during normal operation is set to many times. Such conditions are set. Further, as a conversion coefficient or the like, a conversion value for converting the respective voltages output from the various converters 26 to 29 of the slave station 3 into the voltage, current and temperature of the diesel generator 2, or connected as an external measuring device. The pulse rates of various devices are set. Further, in this embodiment, since the general public line is used, the telephone number of the master station 1 and the telephone numbers of the respective slave stations 3 are also set.

In the "slave station operation program setting routine", the processing contents executed by each slave station 3 are set and changed (step 11).
0). In the present embodiment, the contents of the alarm occurrence determination process, condition measurement process, scheduled measurement process and slave station external control process described below are set / changed.

The alarm occurrence determination process is a process in which the CPU 20 of each slave station detects an abnormality of each diesel generator 2 according to each level determination condition set in step 100 and notifies the master station 1 of the abnormality content. The content of the alarm occurrence determination process is such that the combination of the determination process and the processing procedure are set / changed for each slave station based on the type of the diesel generator 2 as the monitored device.

In the condition measurement process, when it is determined that the diesel generator 2 is under a predetermined operating condition in accordance with the level determination condition defined above, the CPU 20 of each slave station 3 stores the operating data of the diesel generator 2 in the RAM 22 together with the time. This is a process to be stored, and the contents thereof are set / changed for each slave station 3 similarly to the alarm occurrence determination process.

The scheduled measurement process is a process of detecting and storing predetermined operation data of the diesel generator 2 at each predetermined time,
The contents are set / changed for each slave station 3.

In the slave station external control processing, each slave station 3 has a converter 26 to 29.
Is a process of driving and controlling the diesel generator 2 via the converters 30 to 33 according to the operation data of the diesel generator 2 input via the, and the contents thereof are set / changed for each slave station 3.

In the "slave station management schedule setting routine", each slave station 3
The contents of the execution schedule according to the transition of time and the contents of the process executed by each slave station 3 are set / changed by the instruction (step 120). In this embodiment, the contents of the execution schedule such as the scheduled report schedule and the slave station operation information download schedule described below are set and changed,
Pre-alarm transition data collection processing and monitor / trend data collection processing are instructed.

The scheduled report schedule is a process of setting / changing the time at which each slave station 3 transmits the operation data collected by the above-described regular measurement process to the master station 1, and is set / changed for each slave station 3.

The slave station operation information download schedule is a process in which various information and operation programs set by the above-mentioned "slave station information setting routine" and "slave station operation program setting routine" are transmitted to each slave station 3, and are set in advance. When the specified conditions are satisfied, or immediately according to the instruction.

The pre-alarm transition data collection process is a process in which each slave station 3 immediately transmits the operation data collected by the pre-alarm transition data freezing process to the master station 1 by an instruction.

The monitor / trend data collection process is a process in which each slave station 3 transmits the operation data collected by the above-described condition measurement process and scheduled measurement process to the master station 1 by a command.

The "monitoring routine" is a routine for collecting the scheduled report data of each slave station 3 received and stored by the master station 1 and the pre-alarm transition data collection process of each slave station 3 received and stored by the master station 1 in accordance with the above-mentioned scheduled report schedule. It is a processing routine for viewing the operation data of each slave station 3 received and stored by the master station 1 by the alarm occurrence transition data and the monitor / trend data collection processing on the screen, or for printing on the printer 17.

The setting contents and collected data of the “slave station information setting routine”, “slave station operation program setting routine”, “slave station management schedule setting routine” and “monitor routine” related to the above “menu routine” are described in step 140.
As shown pictorially in FIG. 1, it is displayed on the CRT display, stored in an external storage device, or output to the printer 17.

On the other hand, the "counterpart telephone answering operation routine" shown in FIG. 6 which is similarly executed by the master station 1 is a so-called back job processing such as interrupt control, and includes a "transmission operation routine" and a "reception operation routine". It consists of.

The “transmission operation routine” transmits predetermined data predetermined according to the above-mentioned slave station operation information download schedule to each slave station 3 at a predetermined time, and generates a warning at predetermined predetermined time according to the regular report schedule. Each slave station 3 according to various request processing such as pre-transition data collection processing
Is a processing routine for making a transmission request to the client (step 15).
0).

The "reception operation routine" corresponds to the transmission processing of each slave station 3, and receives data transmitted from each slave station 3 such as alarm data indicating the details of an abnormality in the diesel generator 2 and scheduled notification data. This is a processing routine to perform (step 160).

The data transmitted and received by the "transmission operation routine" and the "reception operation routine" are read from the external storage device and stored (step 170).

Next, a "slave station basic routine" executed by each slave station 3
The "master station interrupt routine" will be described.

In the "slave station basic routine", the CPU 20 first performs a process of collecting various operation data of the diesel generator 2 via the various converters 26 to 29 (step 200 in FIG. 7).

When various operation data are collected, the above "slave station information setting routine" and "slave station operation program setting routine"
The operating state of the diesel generator 2 is determined according to various information and operation programs according to (Steps 210 and 22).
0). The various information and operation programs are set in the slave station operation information setting process (step 22 in FIG. 8) of the “master station interrupt routine”.
5) The CPU 2 of each slave station 3 received from the master station 1
The processing content of 0 is set and changed by the received operation program.

When the operating state of the diesel generator 2 is determined (steps 210 and 220 in FIG. 7), the process is divided into the following four processes depending on the content of the determination.

(1) When the normal condition is satisfied When the normal operation is determined, the operation data of the diesel generator 2 is collected at regular intervals according to the regular measurement process received from the master station 1 and stored in the RAM 22 (step 230).

(2) When the storage condition is satisfied When it is determined that the operation data of the diesel generator 2 should be saved according to the above-described condition measurement process and level determination condition received from the parent station 1, the operation data at that time is R
It is stored in the AM 22 (step 240). The capacity stored by this measurement data storage processing is fixed, and the stored operation data is updated and stored.

(3) When the output condition is satisfied When it is determined that the diesel generator 2 should be controlled according to the slave station external control processing received from the master station 1, C
The PU 20 performs a process of controlling the diesel generator 2 via the various converters 30 to 33 (step 25).
0).

(4) When the transmission condition is satisfied When an abnormality of the diesel generator 2 is detected according to the alarm occurrence determination processing received from the master station 1, the master station 1
Then, a process for immediately reporting the details of the abnormality is performed (step 260). At this time, the CPU 20 does not update the operation data stored by the measurement data storage process (step 240) as the pre-alarm transition data, that is, freeze data (step 270). This allows the master station 1 side to always know the progress of the diesel generator 2 in an abnormal state. When the master station 1 knows that the slave station 3 is abnormal, the abnormal lamp of the monitoring panel 16 is displayed or the voice synthesizer 18 is operated via the modem 4.
Performs a process of contacting a person in charge with a message regarding the content of the abnormality or activating a pager.

The above-mentioned "slave station basic routine" is repeatedly executed. The measurement data stored and stored in step 240, the frozen data stored in step 270, and the scheduled data stored in step 230 are each transmitted by a transmission request from the master station 1 side ( FIG. 8, steps 310, 320, 330).

According to the central supervisory control system of the present embodiment described in detail above, the master station 1 side can always know the progress of the diesel generator 2 as the monitored device in the abnormal state. As a result, it is possible to know the abnormal state of the monitored device in more detail, and there is an excellent effect that more appropriate and prompt measures can be taken. In addition, it also has an excellent effect that it is possible to take an appropriate preventive action by checking the time-dependent change of the monitored device using the regular data and the measurement data.

Furthermore, the contents of various processes performed by the slave station 3 and the determination conditions are set to the master station 1
It can be set and changed on the side. As a result, even if the types and conditions of a plurality of monitored devices are different, the master station 1 side can appropriately cope with it, and the abnormal state of the monitored device can be investigated in more detail at a new angle. It has an excellent effect that it can be done.

In the present embodiment, the storage unit includes the alarm pre-alarm transition data freezing process in step 270, the scheduled data holding process in step 230, and the measurement data saving process in step 240.

Further, although the public line is used in this embodiment, the master station 1 and the plurality of slave stations 3 may be linked by a dedicated line.

As described above in detail, in the central supervisory control system of the present invention, the storage means stores the operating data of the device only when the device monitored by the slave unit is normal, so that the device is determined to be abnormal. Then, the storage means stores the transition of the operation data until just before the abnormality of the device. Therefore, it is possible to know the progress of the abnormality of the device and the change over time from the stored contents of the storage means. Therefore, it becomes possible for the service person to take correct and prompt measures, and to take appropriate preventive action before the device falls into an abnormal state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a basic configuration of a central supervisory control system of the present invention, and FIG. 2 is a schematic diagram showing an outline of a central supervisory control system of an embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of the master station 1, FIG. 4 is a block diagram showing the configuration of the slave station 3, FIG. 5 is a flowchart showing the processing of the "menu routine", and FIG. FIG. 7 is a flowchart showing the process of the "operation routine", FIG. 7 is a flowchart showing the process of the "slave station basic routine", and FIG. 8 is a flowchart showing the process of the "master station interrupt routine". 1 ... Master device (master station) 2 ... Monitored device (diesel generator) 3 ... Slave device Slave station 4 ... Modem

Front page continuation (72) Inventor Yukihiro Watanabe 1-1, Sanbonmatsucho, Atsuta-ku, Nagoya, Aichi Japan Vehicle Manufacturing Co., Ltd. (72) Inventor Seiji Tanaka 1-1-1, Sanbonmatsucho, Atsuta-ku, Nagoya, Aichi Japan Vehicles Manufacturing Co., Ltd. (56) Reference JP 60-195417 (JP, A) JP 61-128644 (JP, A) JP 62-229499 (JP, A) JP 62-67411 (JP , A) JP-A-60-51909 (JP, A)

Claims (1)

[Claims] 1. A plurality of main units having a transmission / reception function as a supervisory control device, monitoring connected devices, and transmitting data to the main unit in response to a call of the main unit or when necessary. A central monitoring control system including a slave unit, wherein the slave unit stores operation data of the slave unit only when the monitored device satisfies a predetermined condition indicating normality of the unit. A central supervisory control system characterized by having.