JPH03252223A - Remote location system for trouble position of pcm relay transmission line - Google Patents

Abstract

PURPOSE:To locate troubled point by the remote control from a manned terminal station by providing an unattended station with a measuring instrument for pulse transmission and a control circuit which sends the reception pulse from a relay trouble location line to a location result transfer line as the measurement result. CONSTITUTION:If a repeating transmission line 9 in the transmission direction from an unattended terminal station 100 is faulty, a PCM trouble position remote locating device 6 is controlled through a public line 12 by a personal computer of a manned terminal station 200 and the transmission line 9 and a relay trouble position location line 10 are indicated to interrupt the device 6. When this indication is received, the repeating transmission line 9 is connected to a control line 11 and the location line 10 is connected to a transfer line 13. By the indication from the personal computer 7, the pulse output of a measuring instrument 5 of the terminal station 100 is sent to the repeating transmission line through the control line 11 and is sent to a measuring instrument 51 like PFF-26D or the like of the terminal station 200 through the transfer line 13. In the terminal station 200, the received location result is referred to judge whether a pertinent relay is normal or not.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical field to which the invention pertains The present invention relates to a system for locating a failed repeater on a PCM relay transmission line via an unmanned terminal station.

(2) Prior Art FIG. 3 shows a connection configuration between a relay transmission line and a measuring device in an unmanned terminal station 100 of a transmission line, where l is a multiplex converter, 2 is a transmission line switching device, and 3 is a terminal station. 4 is a relay device, 4 is a monitoring and meeting device, 8 is a transmission path in the reception direction, 9 is a transmission path in the transmission direction, 10 is a repeater failure position locating line, and 5 is a measuring device, for example, PFF-26DM. PCM24. PCM24B,
In PCM system relay transmission lines such as DP-1 and 5M systems, in order to locate the fault location of the relay transmission line
Each repeater is equipped with a filter that passes a unique frequency component, and when a failure occurs in the relay transmission line, a measuring instrument 5 is connected to the terminal repeater 3 of the transmission line, and from this measuring instrument 5, A device that transmits a certain pulse to the transmission path 9 in the transmission direction, passes through the filter of each relay transmission path, and measures the level of the frequency component unique to each repeater that returns via the repeater fault location line 10. Based on the measurement results, it was determined whether the repeaters were operating normally, and the location of the failure was determined based on the results. The above PFF-26D
A measuring device called M has the function of transmitting a specific pulse and measuring the level of each frequency component that is returned.

(3) Problems to be solved by the invention In such a conventional system, when a failure occurs in the relay transmission lines 8 and 9 when installed in the terminal station relay device 3 or the unmanned terminal station 100, maintenance personnel Go to unmanned terminal station 100,
The drawback was that it had to be measured.

The present invention eliminates these drawbacks of the prior art and provides a PCM relay transmission line that allows the location of a fault in a PCM relay transmission line to be located by remote control without having to visit an unmanned terminal station. This provides a fault location remote location method.

(4) Structure of the invention (4-1) Characteristics of the invention and differences from the conventional technology In this method, in the event of a relay transmission line failure in the transmission direction from an unmanned terminal station, the measurement results are transmitted by remotely controlling the measuring instrument that is pre-connected to the unmanned terminal station using PC communication via public telephone lines. The most important feature is that the location of a faulty repeater can be located remotely without having to go to an unmanned terminal station. As a result, it is possible to improve the problem that in the conventional method, it was necessary to go to an unmanned terminal station.

The present invention will be explained in detail below.

(4-2) Embodiment FIG. 1 is a diagram illustrating an embodiment of the present invention, and FIG. 2 is a detailed circuit diagram thereof. In these figures, ■ is a multiplex converter, 2 is a transmission line switching device, 3 is a terminal relay device, 4 is a monitoring and meeting device, 5 and 51 are measuring instruments such as PFF-26DM, and 6 is a PCM failure location remote. 7 is a personal computer (hereinafter referred to as a PC), 8 is a PCM
Transmission line (reception direction), 9 is PCM transmission line (transmission direction),
10 is a repeater failure position locating line, 11 is a control line for the measuring device 5, 12 is an information line from the manned terminal station 200, 13 is a location result transfer line to the manned terminal station 200, 14 is a control circuit, and 15 is a central line. It is a processing device.

The PCM fault location remote locating device 6 has a configuration as shown in FIG.
Transmission line (transmission direction) 9 and repeater failure location locating line 10
, connect the control line 11 of the measuring instrument 5, and connect the manned terminal station 2.
The information line 12 from 00 and the orientation result transfer line 13 to the manned terminal station 200 are always accommodated as shown in FIG. The manned terminal station 200 is connected to the personal computer 7 or the information line 12, and the measuring device 51 of the manned terminal station 200 is connected to the orientation result transfer line 13.

Note that normally, when the relay transmission line is normal, the PCM transmission line (transmission direction) 9 and the repeater fault location locating line 10 pass through the PCM fault location remote locating device 6, as shown in FIG. Like relay pr1. srl is set.

Here, if the relay transmission line 9 in the transmission direction from the unmanned terminal station 100 fails, the PC 7 of the manned terminal station 200
The CM fault location remote locating device 6 is controlled via the public line 12, and the PCM fault location remote locating device 6 is instructed to interrupt the PCM transmission line (transmission direction) 9 and repeater fault location locating line 10. In the PCM failure location remote locating device 6, when the CPU 15 receives this instruction, the CPU 15 controls the relays prA' and srl to connect the relay transmission line of the PCM transmission line 9 to the control line ll, switch state b), and locate. Connect line 10 to transfer line 13.

Next, according to instructions from the personal computer 7 of the manned terminal station 200,
The pulse output of the measuring device 5 of the unmanned terminal station 100 is sent to the relay transmission line via the control line 11 of the measuring device 5 and the PCM transmission line (transmission direction) 9, and the location result from the orientation line 10 is sent to the location result transfer line. PFF-26DM of the manned terminal station 200 via 13
The data is sent to a measuring device 51 such as the following. The manned terminal station 200 looks at the sent location results and determines whether the repeater is normal or malfunctioning.

Of course, the measuring device 5 of the unmanned terminal station 100 can be controlled by instructions from the personal computer 7 of the manned terminal station 200, and the transmission pulse can be changed so that the repeater position number and repeater margin can be changed. Since the location results are sent to the measuring device 51 of the manned terminal station 200 via the location result transfer line 13 each time, the location of the failed repeater can be determined by remote control.

As is clear from this result, it is a major improvement that the location of the faulty repeater can be performed by remote control from the manned terminal station 200 instead of locating the faulty repeater, which in the conventional method required going to the unmanned terminal station 100. .

(5) As is clear from the detailed description of the invention, the PC according to the present invention
According to the fault location remote location method of M relay transmission line, PCM
PCM such as -24, 24B system and DP-1, 5M system
It becomes possible to locate a faulty repeater on a relay transmission line by remote control from a manned terminal station without having to go to an unmanned terminal station.

Therefore, unlike the conventional method, there is no need to go to an unmanned terminal station, reducing operation time and shortening downtime.

There is an advantage of improved safety due to no dispatch.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a fault location remote location system for a PCM relay transmission line according to the present invention, and FIG.
FIG. 3 is a block diagram showing one example of a PCM fault location remote locating device used in the embodiment shown in the figure. FIG. 3 is a schematic configuration diagram of a conventional fault location locating method for a PCM relay transmission line. ■...Multiple conversion device, 2...Transmission line switching device, 3
...terminal relay device, 4...monitoring meeting device, 5...
・Measuring instrument for unmanned terminal station, 6... PCM fault location remote location device, 7... Personal computer (PC), 8... Transmission line in the receiving direction, 9... Transmission line in the transmitting direction, 10 ...Repeater fault location line, 11
...Control line of measuring instrument 5, 12...Information line from manned terminal station, 13...Orientation result transfer line to manned terminal station, 14...Control circuit, 15...CPU,
51...Measuring instrument for manned terminal station (location measuring instrument),
100...unmanned terminal station, 200...manned terminal station. ! ! ll"12 figure

Claims (1)

[Claims] The manned terminal station is equipped with a personal computer for personal computer communication and a locating measuring device for locating faults based on the measurement results from the locating result transfer line; a pulse sending measuring instrument for sending out pulses for the purpose of transmission; a CPU for receiving personal computer communications from the personal computer; and a sending transmission line for the pulse sending measuring apparatus under the control of the CPU of the PCM relay transmission line to be measured. The reception pulse from the repeater failure location line is used as the measurement result to transmit the unique frequency component returned from the repeater of the sending transmission line of the PCM relay transmission line to be measured. a PCM relay transmission line configured to remotely locate a fault position of the PCM transmission line to be measured using the locating measuring device according to the measurement under control from the personal computer; Fault location remote location method.