JPS60242748A - Remote supervisory and controlling system - Google Patents

Abstract

PURPOSE:To attain control operation while collecting TM information of a slave station being outside of a control object by changing the order of collection of display/measuring information (TM information) of the slave station. CONSTITUTION:A master station collects the TM information while scanning sequentially each slave station normally. When the control operation is started, while the master station collects sequentially the TM information of slave stations 4, 5...n being outside of the control object, the master station repetitively collects the TM information of the slave station (m) being a control object station with priority. Thus the TM information from the slave station being the outside of the conrol object is collected and the collecting period of the TM information of the slave station being the control object is reduced.

Description

Detailed Description of the Invention (Technical Field) [Technical Field] The present invention provides a method for integrating I^ into a 1:N remote monitoring and control system consisting of one master station device and a plurality of slave station devices.
For example, there is a φ of 11 people who attack Shichiza.

(Background Art) FIG. 2 is an example of a block diagram of a 1:N remote monitoring and control system, which is the object of the present invention.

The remote monitoring and control device for centralized control (hereinafter referred to as the master station) consists of a central display board that displays the status of each device in each slave station, a central control console that issues various control commands to each device in each slave station, and the master station. Consists of logical units.

The status of each device is sampled by the slave station device, transmitted as display/measurement information (hereinafter referred to as TM) to the master station via the uplink, and displayed on the central display panel.

Various control commands for each device are given from the central control console, transmitted as control information (hereinafter referred to as TC) to the slave stations via the downlink, and commanded to each device.

A system in which the control transmitter for transmitting TCs and the display/measurement receiver for receiving TMs in the master station of such a system are common to each slave station is called the 1=N system.

FIG. 3 shows a schematic diagram of the master station logic device shown in FIG.

In the conventional 1:N system, the master station is equipped with a line switching unit, which sequentially switches the line (scanning operation) to collect 1M information from each slave station.For TC information, the line distribution unit is used to collect 1M information from each slave station along with the address of each slave station. It is sent to each slave station via

Normally, when controlling a device, which may also be a master station, it is necessary to collect 1M information as a response to the control operation. At this time, in the case of the above method, since the TM information is sequentially scanned for each slave station, a delay of one scanning cycle time occurs at worst.

Particularly in continuous control, that is, when it is necessary to perform control operations continuously while checking the results of a certain control operation, the control response time must be as short as possible.

To achieve this, the master station during control operations fixes the line of the slave station connecting the device to be controlled using a line switching unit and collects 1M information.

Figures 4(a) and (bl) are the indications shown in Figure 3, respectively.
It is a figure which shows the flow of 1M information at the time of the input of a measurement receiving part, and the flow of 1M information during control operation in the same place. 1 in the figure. is the start time of the control operation, t2 is the end time of the control operation, 1 to n indicate 1M information from the slave station <i> corresponding to this number, and m indicates 1M information from the slave station <m> to be controlled. As can be seen from the figure, according to the conventional method,
There is a drawback that 1M information of other slave stations cannot be collected during control operation.

(Objective of the Invention) The object of the present invention is to eliminate these drawbacks, and to collect 1M information of slave stations that are not subject to control during control operation, while minimizing the response time of 1M information as a result of control operation. It's about shortening it.

To achieve this object, the gist of the present invention is a system in which one control center acts as a master station and remotely monitors and controls a plurality of slave stations, which are controlled stations, and the master station sends control information to each slave station. Each slave station has one system in common of a control transmission unit that transmits information, and one system in common with each slave station of a display/measurement receiving unit that receives display/measurement information from each slave station. In the system, the master station normally scans the slave stations one after another to collect display and measurement information, and during control operations, it scans slave stations other than those to be controlled, while preferentially scanning the slave stations to be controlled. This is a remote monitoring and control system that collects display and measurement information.

Hereinafter, the present invention will be explained based on embodiments and with reference to the drawings.

(Structure and operation of the invention) FIG. 1 (al) and (b) are diagrams showing the first and second embodiments of the present invention, respectively. Show the flow.

In the figure, "3+ t5" indicates the start time of the control operation, and "4+"
6 indicates the end point of the control operation.

First, a first embodiment shown in FIG. 1(a) will be described. Normally, the master station sequentially scans each slave station to collect 1M information. When the control operation is started, FIG.
As shown in , the master station controls the slave stations <4>, <
5>-=・, (n-1>, '<n>'s 1M information is collected, while the 1M information of the slave station <m> which is the station to be controlled is repeatedly collected preferentially. Therefore, this embodiment According to the above, it is possible to collect 1M information from slave stations that are not subject to control even during control operations, and it is also possible to shorten the collection cycle of 1M information from slave stations that are subject to control. Collection of the 1M information from the slave stations in accordance with the order is performed by the line switching section on the display/measurement receiving section side shown in FIG.

Next, a second embodiment shown in FIG. 1 (bl) will be described.

This embodiment shortens the collection cycle of 1M information of the slave station <m> which is the control target in the first stage during control operation, lengthens the collection cycle in the second stage, and increases the collection cycle of the slave station not to be controlled in the second stage. It has the feature that it can be used for the collection of 1M information. This embodiment is useful when it is possible to change the collection period of 1M information of the slave station <m> depending on the characteristics of the controlled object.

(Effects of the Invention) The present invention has the advantage that control operations can be performed while collecting 1M information of slave stations that are not subject to control by changing the order in which 1M information is collected, and the operability as a remote monitoring and control system is improved. Improvements in performance and flexibility can be expected.

[Brief explanation of drawings]

FIGS. 1(a) and (b) are flowcharts of TM information showing the first and second embodiments of the present invention, respectively, and FIG. 2 is a flowchart of the 1:N remote monitoring and control system which is the subject of the present invention. The block diagram, FIG. 3 is a block diagram of the master station logic device shown in FIG. 2, and FIG. 4 (al and (bl are respectively flow charts of conventional TM information). Private patent attorney Megumi Yamamoto −

Claims (1)

[Claims] A system in which one control center acts as a master station and remotely monitors and controls multiple slave stations, which are controlled stations, and the master station has a control transmitter for each slave station that transmits control information to each slave station. In a system that has one line in common and a display/measurement receiving unit for each slave station that receives display/measurement information from each slave station, the master station normally receives the slave stations one after another. It is characterized by collecting display/measurement information by scanning, and during control operation, collecting display/measurement information by preferentially scanning slave stations to be controlled while scanning slave stations other than those to be controlled. Remote monitoring control system.