JPH03227197A - Remote control monitor system - Google Patents

Abstract

PURPOSE:To control and monitor a monitor equipment remotely from plural remote control stations by providing a control management equipment to the remote control stations in an earth station. CONSTITUTION:A control management equipment 30 in an earth station 4 decides the location of a control right in response to a request of the control right from a control monitor equipment 20 or remote control stations 1-3 and informs it to the equipment 20 and the stations 1-3 and holds it in itself. Moreover, a status of a communication equipment 10 possessed in itself is always made coincident with a status possessed by the equipment 20 by updating the status with a monitor packet received from the equipment 20 via an SP 34. The received monitor packet is sent from SP 31-33. The retained status is sent from the SP corresponding to the line when a serial data line among the stations 1-3 is established. When the relevant stations 1-3 have the control right, the received control packet is sent from the SP 34.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a remote control monitoring system, and in particular to a remote control monitoring system for a controlled monitoring device consisting of a plurality of subsystems, such as a communication device constituting a satellite communication earth station. The present invention relates to a remote control monitoring method.

[Conventional technology]

For example, in a small earth station for satellite communication, one control and monitoring device is provided for the communication device consisting of a plurality of subsystems that make up the earth station, and each subsystem of the communication device can be controlled and monitored by this control and monitoring device. It is being done. The control/monitoring device is connected to each subsystem of the communication device, which is the controlled/monitored device, through multiple serial ports, sends control packets to each subsystem, and monitors each subsystem in response to the control packet. It receives the packet, controls and monitors the controlled and monitored device, and also holds status information.

A remote control station is set up at a location far from such an earth station,
A remote control/monitoring system is also used in which the controlled/monitored device can be controlled and monitored from this remote control station. In such a remote control monitoring system, it is economically unrealistic to connect the earth station and remote control station with the same number of lines as the number of serial ports that the earth station's control and monitoring equipment has for the controlled and monitored equipment. Therefore, the earth station and remote control station are connected by one serial data line. Therefore, various data buckets for control and monitoring that the earth station sends and receives from the remote control station via one serial data line are sent and received from multiple serial ports of the control and monitoring device to the controlled monitoring device. Management is required to transfer control rights.

In conventional remote control and monitoring systems, all of this control management was handled by a control device.

[Problem to be solved by the invention]

By the way, there is a demand for providing a plurality of remote control stations and switching the station that performs control and monitoring during the day, morning and evening, and night. However, the above-described conventional remote control and monitoring system has the disadvantage that when a plurality of remote control stations are used, the load on the control and monitoring device becomes excessive due to the increase in control management processing.

An object of the present invention is to provide a remote control and monitoring system that allows a plurality of remote control stations to be used without increasing the load on the control and monitoring device.

[Means to solve the problem]

The remote control and monitoring system of the present invention provides an interface between a local station equipped with a control and monitoring device that controls and monitors a controlled and monitored device via a plurality of serial ports, and the control and monitoring device installed separately from the local station. In the remote control monitoring system, the remote control station includes a remote control station that remotely controls and monitors the controlled monitoring device by transferring control rights to the remote control station, and a control management device that manages the transfer of the control rights. Contains.

The control management device included in the remote control monitoring method of the present invention includes:
The control right may be unconditionally handed over to the control and monitoring device in response to a request from the control and monitoring device.

Further, the control management device transmits a control command received from the remote control station having the control right to the control monitoring device, and discards a control command received from the remote control station not having the control right. You may also do so.

Further, the control management device may receive status information of the controlled monitoring device from the control monitoring device, hold it internally, and transmit it to the remote control station.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

In FIG. 1, reference numeral 4 denotes a small earth station, which communicates with a communication device 10 in a satellite communication system. 1-3
is a remote control station that remotely controls and monitors the communication device 10 of the earth station 4.

The earth station 4 includes a communication device 10, a control monitoring device 20 connected to serial ports (SP) 11 to 18 and 5P21 to 28 of the communication device 10, and a control monitoring device 20.
The control management device 30 connected by 5P29 and 5P34 that the control management device 30 has, and the 5P31, 3 that the control management device 30 has
2.33 connected modem/demodulator (MD) 41, 42,
43.

The remote control stations 1, 2.3 are the MD41,
Mn communicating with 42.43 via serial data line
S2 and a terminal device 60 connected to MnS2.

Control and monitoring device 20 of earth station 4 and remote control stations 1 and 2
．． Each of the terminal devices 60 of No. 3 has a function of controlling and monitoring the communication device 10, and the management of the transfer of control rights, which determines which of these four devices will perform control and monitoring, is done by the earth station 4.
This is performed by the control management device 30 of. The control and monitoring device 20 gives priority to requests for control rights. Therefore, remote control station 1,
If the control and monitoring device 20 requests the control right when one of the devices 2.3 has the control right, the control management device 30 unconditionally delegates the control right to the control and monitoring device 20.

The operation of each device in the embodiment shown in FIG. 1 will be explained below.

When the control/monitoring device 20 has control authority, it generates the necessary control packets by itself, and the generated control packets,
Alternatively, the control packet received via 5P29 when the communication device 10 does not have control authority is transmitted to 5P11-18 of the communication device 10 via the appropriate 5P21-28, and
0 sends the monitoring packet sent from 5PII to 18 to 5P2
By receiving data via the communication terminals 1 to 28, the communication device 10 is controlled and monitored, and the status of the communication device 10 is maintained. The received monitoring packets update the maintained status and are also sent out from the 5P29.

The control management device 30 determines the location of the control right as described above in response to a request for control right from the control and monitoring device 2o or the remote control stations 1 to 3, and transmits the determined result to the control and monitoring device 2o. The information is notified to the remote control stations 1 to 3, and is also held by the user. Also, by updating with the monitoring packet received from the control and monitoring device 2o via 5P34, the self-maintained status of the communication device 10 is always made to match the status held by the control and monitoring device 20.

The received monitoring packet is further transmitted from 5P31 to 5P33. The status held by the remote control station 1.
When a serial data line is established with 2 or 3, data is sent from the SP corresponding to that line. Furthermore, when a control packet is received from the remote control station l, 2 or 3 via the corresponding SP, it is determined whether the remote control station that sent this control packet currently has control authority, and If so, the received control packet is sent from the 5P34, and if not, the received control packet is discarded.

The terminal device 6o of the remote control station 1, 2.3 is MnS2, serial data line, MD41, 42°43.5P31.
32 and 33 to remotely control and monitor the communication device 10 and maintain its status, as described below.

Since the terminal device 60 has only one boat on the earth station 4 side, it cannot input and output multiple data packets at the same time, but except for this point, it has the same control and monitoring functions as the control and monitoring device 20. This embodiment is realized by a personal computer.

When power is turned on at the remote control station 1, 2 or 3 and a corresponding serial data line is established with the earth station 4, the terminal device 6o determines its own status based on the status transmitted from the control management device 3o. The status held by the control management device 30 is changed from the status held by itself to the status held by the control management device 30 (
This status is matched with the status held by the control/monitoring device 20). The terminal device 60 of the remote control station that has control authority generates a necessary control packet, and this control packet is transmitted to the MnS2, the serial data line, and the MD.
41, 42 or 43 to the control management device 30, and further controls the communication device 10 via the control and monitoring device 20 as described above.

Here, the control monitoring device 20 in the embodiment shown in FIG.
Let's compare the load on the control and monitoring device in the conventional example. A conventional control and monitoring device exchanges various data packets for control and monitoring with one remote control station. Since the control/monitoring device 20 in this embodiment also has only one 5P29 port on the remote control station side, the load associated with sending and receiving various data packets to and from the remote control station side is approximately equal. However, in the conventional example, the control and monitoring device itself performs the determination of whether the control authority is granted to the control and monitoring device or the remote control station, and the processing related to this determination, but in this embodiment, The control management device 30 is made to perform this. Therefore, the load on the control and monitoring device 20 in this embodiment is smaller than the load on the control and monitoring device in the conventional example.

〔Effect of the invention〕

As explained above, the present invention increases the load on the control and monitoring device by providing a control management device that manages the transfer of control rights between the control and monitoring device provided in a local station and a plurality of remote control stations. Since the controlled and monitored device can be remotely controlled and monitored from a plurality of remote control stations without having to do so, it is possible to remotely control and monitor the device from a plurality of different locations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1-3... Remote control station, 4... Earth station, 10... Communication device, 11-18. 21-29
．． 31-34...Serial port, 20...
...Control monitoring device, 30...Control management device,
41 to 43.50...Modulator/demodulator, 60...Terminal device.

Claims (1)

[Claims] 1. Between a local station equipped with a control and monitoring device that controls and monitors a controlled monitoring device via a plurality of serial ports, and the control and monitoring device located apart from this local station. In a remote control monitoring system comprising a remote control station that remotely controls and monitors the controlled monitoring device by transferring control rights, the remote control station includes a plurality of remote control stations and a control management device that manages the transfer of control rights. A remote control monitoring system characterized by comprising: 2. The remote control and monitoring system according to claim 1, wherein the control management device unconditionally passes the control right to the control and monitoring device upon a request from the control and monitoring device. 3. The control management device transmits a control command received from the remote control station having the control right to the control monitoring device, and discards a control command received from the remote control station not having the control right. 3. The remote control monitoring system according to claim 1, wherein: 4. Claim 1, wherein the control management device receives status information of the controlled monitoring device from the control monitoring device, holds it internally, and transmits it to the remote control station. , 2 or 3.