JPH01212199A - Monitor control system - Google Patents

Abstract

PURPOSE:To obtain high-quality monitor information by equipping a selector means to receive and select a monitor signal sent from an objective station corresponding to the objective station identified by an identifying means and selecting and receiving te monitor signal received from the channels in many directions so as to correspond to the objective station. CONSTITUTION:An identifying code among control signals sent from a master station monitor control device 11 is identified by an identifying means 12, and the monitor signal received by a selecting means 13 corresponding to the identifying code is selected. That is, for the control signal to designate the specific control objective station sent from the master station monitor control device 11, the identifying code included in it is identified by the identifying means 12, and a selected receipt conforming to the identifying code is carried out by the selecting means 13. Thus, the monitor signal received by the master station monitor control device 11 does not receive the effect of an code error which may be generated in a monitor signal transmission path other than the designated station (polled station).

Description

[Detailed Description of the Invention] [Summary] Concerning a supervisory control method in which a base station (master station) centrally monitors and controls slave stations (slave stations), the present invention relates to a monitoring control method in which a base station (master station) centrally controls multiple slave stations. The purpose of the control method is to provide a supervisory control method that can eliminate mutual influences such as code errors between slave stations and obtain high-quality monitoring information. In a supervisory control method in which a control device performs supervisory control of multi-way routes, an identification means for identifying a target station in a supervisory control signal sent from the master station supervisory control device, and a method according to the target station identified by the identification means. and selecting means for receiving and selecting the monitoring signals sent from the target station, and is configured to selectively receive the monitoring signals received from multiple routes in correspondence with the target station.

[Industrial application field]

The present invention relates to a monitoring and control method when a base station (master station) centrally monitors and controls slave stations (slave stations).

[Conventional technology]

Conventionally, in fields such as satellite communications, when a master base station centrally monitors and controls multiple slave stations, the base station usually sends a control signal (polling signal) to a specific slave station. is sent out, and monitoring information is obtained in response to this control signal. In this case, there are methods such as using one line in a time-division manner, or providing a plurality of monitoring control channels for each slave station and sequentially scanning them.

FIG. 6 is an explanatory diagram of a monitoring control method in conventional satellite communication. This supervisory control system has a plurality of supervisory control channels (CHI to CHN) corresponding to each slave station in order for the master station to intensively monitor a plurality of slave stations. The master station monitoring control device 1 sends a control signal (TX) specifying a specific slave station to the master station terminal device 2 by polling in order to collect slave station monitoring information, 2 to satellite 3, slave station side terminal equipment 4-1 to . Slave station monitoring control device 5 via IN
Request slave station monitoring information from any one of -1 to 5-N. The designated slave station transmits the monitoring information to the slave station monitoring control device 5-1~
5-N, the slave station terminal devices 4-1 to 4-N, the satellite 3, and the master station terminal device 2. The information received by the master station side terminal device 2 is obtained by combining a plurality of pieces of monitoring information into a single piece of information by the OR processing circuit 6 or the like, and then received by the master station monitoring and control device 1 .

In this supervisory control method, the master station monitor and control device 1 sends a control signal specifying a specific slave station, and the master station centralizes the slave stations by receiving the monitoring information sent back from the designated slave station. monitoring and control.

[Problem to be solved by the invention]

However, in the above-mentioned supervisory control system for the satellite line, the terminal devices 2.4-1 to 4-N simply provide a transmission path for the supervisory control signal and are not concerned with the contents of the supervisory control signal.
In addition, since the received information on the master station side is unified by the OR processing circuit 6, etc., when a code error occurs during rain, etc., the received information on the monitoring information channel of a station other than the polled station is not affected. There was a problem in that the monitoring information of the polling station was affected, causing code errors. That is, the seventh
As shown in the timing chart in the figure, for example, when receiving monitoring information from a slave station corresponding to channel 2 (CH2), which is a polled station, channel N-1 of a slave station other than the polled station, which is a non-selected station, is being received. (CHN-1), channel N (CHN), etc., the monitoring information of the polled station is affected by the error.

The present invention provides a supervisory control method in which a master station centrally controls multiple slave stations, which can eliminate mutual influences such as code errors between slave stations and can obtain high-quality monitoring information. The purpose is to provide.

[Means to solve the problem]

FIG. 1 is a block diagram of the principle of the present invention. In the figure, a master station supervisory control device 11 sends out a control signal designating a specific target station by polling in order to perform multi-way supervisory control using a supervisory control network. This control signal includes an identification code of a specific target station (not shown) to be controlled. The identification code in the control signal sent from the master station monitoring and control device 11 is identified by the identification means 12, and the monitoring signal received by the selection means 13 is selected according to this identification code.

[For production]

The identification code included in the control signal sent from the master station monitoring and control device 11 that designates a specific control target station is identified by the identification means 12, and the selection means 13 selects and receives it according to the identification code. It will be done.

Therefore, the supervisory signal received by the master station supervisory control device 11 is not affected by code errors that may occur in the supervisory signal transmission path of stations other than the designated station (polled station).

〔Example〕

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

FIG. 2 is a functional explanatory diagram of the embodiment of the present invention. In addition, the first
Parts corresponding to the figures are denoted by the same reference numerals.

In the figure, a master station monitoring and control device 11 sends out a control signal specifying a target slave station in order to monitor and control a plurality of slave stations. This control signal (including the polling signal) includes the identification code of the target slave station. A control signal sent from the master station monitoring and control device 11 is sent from the terminal device 14 to the slave station. - On the other hand, the master station monitoring and control device 11 and the terminal device 1
4, there is added a function of capturing an identification code in a control signal and selectively controlling the monitoring signal received by the terminal device 14 according to the captured identification code.

FIG. 3 is a diagram showing an example of a configuration that specifically implements the functions shown in FIG. 2. Note that parts corresponding to those in FIG. 2 are denoted by the same reference numerals. In the figure, a master station monitoring and control device 11 sends a predetermined control signal to each slave station. For example, as shown in FIG.
The format consists of a frame check sequence (Fe2), a completion flag (CF), etc. The control signal is given to a slave station identification code determiner 15 and a slave station identification code importer 16. The slave station identification code determiner 15 determines the timing position of the slave station identification code (SID) in the control signal, and provides the acquisition control signal to the slave station identification code importer 16. That is, the control signal is
Since the slave station identification code determiner 15 is configured with the formant shown in the figure, the slave station identification code determiner 15 outputs the capture control signal at the timing position of the slave station identification code (SID) located at a predetermined bit position after detecting the start flag (OF). Output. The slave station identification code importer 16 acquires the slave station identification code (SID) in the control signal at the timing of the acquisition control signal given from the slave station identification code determiner 15.
) and gives a selection control signal to the N1 selector 17.

This N:1 selector I7 is a slave station identification code (SID)
The slave station monitoring signal (RX
It receives only CH1-R, CHN). Further, the control signal is given to the control delay compensator 18, delayed by a predetermined time, and given to the terminal device as a control signal (T, CH1 to T, CHN) corresponding to each channel.

This control delay compensator 18 is connected to the slave station identification code determiner 1.
5. The control signal is delayed by the time during which the slave station identification code importer 16 and the N:1 selector 17 operate.

The operation of the above configuration will be explained.

FIG. 5 is a timing chart illustrating an example of selective reception operation. First, when a master station monitors and controls a slave station, the master station monitoring and control device 11 designates each slave station (1 to N) and sends out a control signal. The slave station identification code determiner 15 outputs an acquisition control signal to the slave station identification code importer 16 at the timing position of the slave station identification code in the control signal. This slave station identification code importer 16 imports the slave station identification code and outputs a selection control signal according to the corresponding slave station to the N:1 selector 17. This N:1 selector 17 selects only the selected channel. On the other hand, the control signal is delayed by the control delay compensator 18,
The signal is transmitted from the terminal device 14 to the slave station, and a monitoring signal is sent from the designated slave station.

The N:1 selector 17 selects only the channel corresponding to the slave station specified by the control signal as a monitoring signal. That is, for example, when the control signal specifies slave station I, channel 1 is selected, and the response of slave station 1 is the supervisory signal (R
XCHl). Therefore, the influence of code errors occurring in the supervisory signal transmission paths of stations other than the selected slave station can be eliminated from the supervisory signal.

In the above embodiment, the functions shown in FIG. 1 are realized by hardware, but the functions shown in FIG. 1 can also be realized by software (including firmware).

In the embodiments described above, the format of the control signal can be changed depending on the number of slave stations to be monitored, the content, etc., and the timing of the acquisition control signal etc. can also be arbitrarily determined.

〔Effect of the invention〕

As explained above, according to the present invention, in the master station monitoring and control device, received signals from multiple routes are selectively received in correspondence with the stations to be controlled, thereby eliminating the influence of received signals on each other. and can easily obtain high-quality monitoring information.

[Brief explanation of the drawing]

Fig. 1 is a principle block diagram of the present invention, Fig. 2 is a functional explanatory diagram of an embodiment of the present invention, Fig. 3 is a specific configuration diagram of an embodiment of the present invention, and Fig. 4 is a control signal format of an embodiment of the present invention. FIG. 5 is a timing chart showing an operation example of selective reception according to an embodiment of the present invention. FIG. 6 is a conventional monitoring control method in satellite communication. FIG. 7 is a diagram explaining a conventional code error occurrence state. It is. DESCRIPTION OF SYMBOLS 11... Master station monitoring control device, 12... Identification means, 13... Selection means, 14... Terminal device, 15... Slave station identification code determiner, 16... Slave station identification Code importer, 17...N:1 selector, 18... Control delay compensator. Figure 1 of the principle of production January

Claims (1)

[Claims] In a supervisory control method in which a master station supervisory control device (11) using a supervisory control network performs multi-way supervisory control, an identification for identifying a target station in a supervisory control signal sent from the master station supervisory control device (11). means (12) and the identification means (12)
a selection means (13) for receiving and selecting a monitoring signal sent from a target station according to the target station identified by the target station; A supervisory control method featuring: