JPH0454038A - Equipment monitor system - Google Patents

Abstract

PURPOSE:To eliminate the need for the wiring work entirely and to reduce the cost resulting from the reduction in the installation work period by sending state information of the equipment by radio. CONSTITUTION:Radio transmitter-receivers 100-M to send state information are connected to each equipment group. A radio transmitter-receiver 200 to receive information from monitor object equipments of the equipment groups 1,2-N being components of the entire earth station is connected to a monitor equipment 300. The radio transmitter-receivers 1-N and the radio transmitter- receiver 200 are connected in a radio wave. The monitor equipment 300 transfers polling information requesting the transfer of the state information to each equipment similarly in the case of a conventional system in the packet form.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device monitoring method, and more particularly to a device monitoring method for monitoring status information of each device group of a satellite communication earth station consisting of a large number of devices.

[Conventional technology]

In general, an earth station for satellite communication consists of an antenna device, multiple high-power amplifiers (HPAs) with redundant configuration, low-noise amplifiers (LNA), and frequency converters (UP/DOWN C0).
It consists of various devices such as NVERTER), modem, and so on. Also, (7) HPA, LNA, UP, respectively.
/DOWN C0NVERTER is connected via a transmission line switch 0 Normally, a monitoring device is used to centrally monitor the operating status of these devices all at once. The monitoring information is transmitted to the monitoring device in the form of a telegram packet, and the information is transmitted by wire according to interface standards such as R8232C1 and R8422. In addition, protocols such as HDLC are used to transfer information.
Information is transmitted in the form of a telegram packet with some kind of error detection code added.

HDLC protocol is X, 25 level 2 (CCITT)
X, 2 and LAPB compatible DTE data link layer procedures (
Information transfer using ISO7776) is common.

Also, the aforementioned HPA and LNA.

Devices of the same type, such as UP/DOWN C0NVERTER and modulation/demodulation equipment, are installed as one device group, and wiring for transmitting operating status information is also often grouped together for each device group.

Such a conventional device monitoring system will be explained with reference to FIG. The earth station has equipment groups 10, 20. It is composed of a monitoring device 50, and for example, a device group 10 indicates a frequency conversion device group. A plurality of frequency conversion devices 11, 12, 13 to IN are often mounted on the same rack as one device group 10. Similarly, a device group 20 represents, for example, a modem device group constituting an earth station. A plurality of modem devices 21, 22. ~2N is device group 2
Treated as 0. In the device group 10, wiring 11A, 12.13 for transmitting status information from each device
A to INA are connected to connector boards 31, 32, 33 to 3N. Respective connector boards 31, 32
．． 33~3N is distributed! They are connected to each other at 31A, 32A, and 33A, and are grouped together as a status information transfer line for the device group 10. The monitoring device 50 is connected to the connector boards 31 to 3.
It is sufficient if the connector board is connected to any one of the connector boards of N, but in FIG.
．． 51 of 52 to 5N and the connector board 31 are connected by a wiring 51A. Similarly, a wiring 52A from the device group 20 is connected to the input/output boat circuit 52 of the monitoring device 50 as a state information transfer line. The internal connections of the device group 20 are similar to the connection method of the device group 10.

The monitoring device 50 takes in status information transfer lines from a group of monitored devices constituting the entire earth station into input/output board circuits 51 to 5N prepared for each transfer path. The monitoring device 50 periodically sends a polling packet with an address to each device group to request the transfer of status information to each input/output board circuit 51 to
5N, and in response, each device group sends a status information packet to the monitoring device ll! Transfer to 50. Monitoring device 5
0 is a state information transfer line 51 wired from each device group
The information transmitted via A to 5NA is received and processed. Note that the wiring 5NA indicates wiring to other device groups other than the device group 10.20.

On the other hand, when the earth station is constructed in the early stage or when the monitoring function of the monitoring device 50 does not work properly, the wiring 51, which is a status information transfer line connecting each device group and the monitoring device 50,
It is necessary to check the connection status of A to 5NA, etc. using a testing device such as a tester to isolate the cause.

[Problem to be solved by the invention]

In the conventional device monitoring method described above, the device status information of the devices that make up the earth station is transmitted by wire, so a huge amount of wiring is required between the device group and the monitoring device.
The cost required for the wiring work is often a non-negligible proportion of the construction cost of the entire earth station. Furthermore, the cost required for wiring and connectors for collecting status information from a plurality of identical devices in each device group cannot be ignored.

In addition, in large-scale earth stations, the monitoring equipment is installed in a room dedicated to monitoring, and the earth station equipment is usually installed outdoors or in another room quite far away, and wiring checks using testers etc. Although it was possible to confirm that there were no gold wires, it was not possible to confirm that the wires were wired correctly, and it was not easy to confirm that the wires were wired correctly, and it was also difficult to maintain the wiring in a normal state.

In addition, it is not only nearly impossible to add wiring during conventional expansion, but also if there is a malfunction during the monitoring function check performed at the initial inspection stage of the system to confirm that the wiring is correct. There are various conditions such as the time required to determine whether the problem is caused by a wiring error or whether there is a problem with the original monitoring function, which cannot be ignored, and this is a significant drawback when building a supervisory control system horizontally.

Furthermore, as long as wired wiring is used, even if an information transmission method with a protocol such as HDLC is used, there is a limit to the number of notebooks that can be connected to one transmission line due to impedance mismatch related to wiring connections. Another drawback is that in order to monitor the operating status of a large number of device groups, the monitoring device must prepare a large number of input/output port circuits. Therefore, there was a fatal drawback in that the monitoring performance of the monitoring device itself could not be fully utilized.

[Means to solve the problem]

The device monitoring method of the present invention includes a plurality of device groups and a monitoring device that monitors the status of these device groups, and each of the device groups has a first communication device for transmitting the device status. The monitoring device includes a second wireless transmitter/receiver for transmitting polling information to each device group through the first wireless transmitter/receiver and for receiving status information transmitted from each corresponding device group. The device is characterized in that it includes a wireless transmitting and receiving device, and transmits status information of the device group wirelessly.

〔Example〕

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

FIG. 1 is a block diagram of one embodiment of the present invention. 1~N
indicates a device group that constitutes an earth station, and each device group has multiple H
PA, LSA, AP/DOWNC-ONVERTER,
It consists of a modem, etc. Wireless transmitting/receiving devices 100-M for transmitting status information are connected to each device group.

The monitoring device 300 includes a device group 1, which constitutes the entire earth station.
A wireless transmitting/receiving device 200 for receiving information from 2 to N monitored devices is connected.

The wireless transmitting/receiving devices 1 to N and the wireless transmitting/receiving device 200 are wirelessly connected. Similar to the conventional method, the monitoring device 300 transfers polling information requesting each device to transfer status information in the form of a packet. Usually, a polling packet has a destination address, and the wireless transmitting/receiving device 1~
The device receiving the message N transfers the status information when the address matches its own address. Therefore, even in the transfer method using wireless transmitter/receivers 1 to N and 200, by using only one radio frequency, it is possible to achieve the same performance as in the conventional method, in which each device group is connected with a large number of wires. It is easily possible to obtain. The radio transmitting/receiving devices 1 to N and 200 used may be completely similar devices. Note that we are focusing on the fact that the wireless transmitter/receiver system is not wired, and the same monitoring function can be achieved even if it is a system that uses infrared rays instead of wireless radio waves.

〔Effect of the invention〕

According to the present invention, since the status information of the device is transmitted wirelessly, there is no need for any wiring work, and there is a great effect not only in terms of cost reduction by shortening the construction period but also in terms of improving reliability. Particularly in the case of expanding or reconfiguring large earth stations or earth station equipment that may be expanded or changed, the fact that there is almost no need for additional wiring or other work is a very significant effect.

Furthermore, since information is transferred wirelessly, only one receiving port is required, eliminating problems such as impedance mismatch that existed with wired wiring, and making it possible to maximize the performance of the monitoring device itself. Furthermore, since the monitoring device only needs one transmitting/receiving boat, the scale of the monitoring device can be significantly simplified.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional device monitoring system. 1~NI0.20...equipment group, 100~M, 200・
・・Wireless transmitting/receiving device, 50,300 ・・Monitoring device, 1
1-IN, 21-2N...device, 31-3N. 41~4N...Connector board, IIA~INA. 31A~33A, 51~5NA...Wiring, 51~5N
...Input/output boat circuit.

Claims (1)

[Claims] 1. In a device monitoring system consisting of a plurality of device groups and a monitoring device that monitors the status of these device groups, each of the device groups has a first device for transmitting the device status. a wireless transmitting/receiving device; the monitoring device transmits polling information to each device group through the first wireless transmitting/receiving device;
1. A device monitoring system comprising: a second wireless transmitting/receiving device for receiving status information transmitted from a corresponding device group; and transmitting status information of the device group wirelessly. 2. The device monitoring system according to claim 1, wherein the wireless frequency for wirelessly connecting the plurality of first wireless transmitting/receiving devices and the second wireless transmitting/receiving device is one frequency.