JPS63294025A - Communication channel system - Google Patents

Abstract

PURPOSE:To sufficiently display the monitor function even in the case of trouble in plural positions by providing a means which decide an effective communication channel and discriminating it in each monitor station section whether the input signal from a current channel or a stand-by channel is used. CONSTITUTION:An information processing part 10 receives signals, which are received by a current up signal reception part 11' N and a stand-by up signal reception part 11' E, and checks validity of signals. A control signal 110a as the check result is sent to an up reception signal selecting part 13' to select normal one of a current up communication channel 7 and a stand-by up communication channel 9. The processing part 10 operates the selecting part 13' by its own decision to send the normal signal on the current up communication channel 7 or the stand-by up communication channel 9 to a host station through an up signal distributing part 14' and both of channels 7 and 9. Thus, it is substantiated that this signal is the effective signal by the local station.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a communication line system used in a telecommunications system, etc., for collecting data in a system for centrally monitoring the telecommunications system.

(Prior Art) FIG. 2 is a block circuit diagram showing an example of a communication line system for collecting data in a conventional system for centrally monitoring a telecommunications system. This data collection system includes a central monitoring station 17 and monitoring stations 18 and 19.

..., which are placed along the monitored heavy air system. These stations are connected in tandem by a working downlink communication line 6 and a working uplink communication line 7, and are also connected in tandem by a protection downlink communication line 8 and a protection uplink communication line 9.

The central monitoring station 17 consists of the central monitoring device 1, and the monitoring station 18
, 19 . . . extend from the monitoring device 2, two signal distribution sections 15, and two signal coupling sections 16, respectively. The working downlink communication line 6 passes through one of the two signal distribution sections 15, the backup downlink communication line 8 passes through the other, and the working uplink communication line 8 passes through one of the two signal coupling sections 16. A communication line 7 runs through it, and a backup uplink communication line 9 runs through the other side.

The monitoring device 2 includes an information processing section 10 and a working downlink signal receiving section 1.
1N, preliminary downlink signal receiving section LIE, and information transmitting section 12
It is equipped with The working downlink signal receiving unit ttU is connected to the signal distribution unit 15 through which the working downlink communication line 6 passes, and the backup downlink signal reception unit LIE is connected to the signal distribution unit 15 through which the backup downlink communication line 8 passes.

Further, the information transmitting section 12 is connected to each of the two signal combining sections 16, and the information processing section 10 is connected to the working downlink signal receiving section 11N, the backup downlink signal receiving section LIE, and the information transmitting section 12. There is.

The central monitoring device 1 and the monitoring devices 2, 3, . . . are connected by the above-mentioned communication line system, and data transmission for alarm collection and control is performed. Therefore, data signals transmitted from the centralized monitoring device 1 to the monitoring devices 2, 3, . The data enters the processing unit 10 and is supplied to the monitoring devices 2, 3, . . .

In addition, the response signals formed by the information processing units 10 of the monitoring devices 2, 3, . . . The data is sent to the central monitoring device 1 via the .

In this way, in the conventional centralized monitoring using the communication line system, communication lines 6 to 9 are configured into two systems, a working system and a backup system, and the monitoring function is not disabled in the event of a failure in one of the systems. I have to.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional system, each of the working downlink communication line 6, the working uplink communication line 7, the protection downlink communication line 8, and the protection uplink communication line 9 has one or more locations. If this becomes a failure, data transmission will be interrupted between the centralized monitoring device 1 and any of the monitoring devices 2 to 5, resulting in a disadvantage that the original monitoring function will not be fully demonstrated.

For example, in Figure 2, the current lunar glands 6 and 7 between the monitoring devices 2 and 3.
If the backup side ports B8 and 9 between the and monitoring devices 4 and 5 become a failure, monitoring bag #5 will not be able to communicate with the central monitoring device 1 using either the active or backup line, and the monitoring function will be disabled. It will be damaged.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the communication line system provided by the present invention is such that a central monitoring device and a plurality of monitoring devices are cascaded through two communication lines, one for use and one for backup. The monitoring device includes: two downlink signal receiving units each receiving downlink signals transmitted from an upper station via both the working and protection communication lines; two uplink signal receivers each receiving uplink signals transmitted via both working and backup communication lines; receiving signals via the two downlink signal receivers and the two uplink signal receivers; Detects the presence or absence of uplink or downlink signals of the working and backup communication lines and the presence or absence of errors in these signals, outputs a control signal to select the normal side of the working communication line or the backup communication line, and also outputs an uplink response. an information processing unit that creates and outputs a signal; receives a control signal from the information processing unit to select the normal side of the working downlink communication line or the backup downlink communication line; a downlink received signal selection unit that selects the normal side of the downlink communication line from the information processing unit; A received signal selection unit selects one of the normal uplink communication lines of the backup uplink communication line; the downlink signal selected by the downlink reception signal selection unit is divided into two, and the working downlink signal is connected to the lower station. a downlink signal distribution unit that sends to each of a communication line and a backup downlink communication line; an information transmission unit that sends an uplink response signal created by the information processing unit; an uplink signal selected by the uplink reception signal selection unit; and an uplink signal distribution unit that combines uplink response signals output from the information transmitting unit, divides the signals into two, and sends the divided signals to a working uplink communication line and a protection uplink communication line connected to the upper station, respectively. Features.

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

FIG. 1 is a block circuit diagram showing a communication line system according to an embodiment of the present invention applied between monitoring stations 18, 19, . . . and a centralized monitoring station 17 according to the present invention. This data collection system consists of a central monitoring station 17 and monitoring stations 18, 19, etc., which are arranged along the monitored telecommunications system. And, unlike the monitoring stations in the conventional communication line system described above, each of these monitoring stations connects either the working downlink communication line 6 or the backup downlink communication line 8, whichever is normal, and the working uplink communication line 7. The configuration is such that one of the normal communication lines of the backup uplink communication line 9 is selected and connected in cascade.

The central monitoring station 17 consists of the central monitoring device 1, and the monitoring station 18
, 19 . . . each consist of a monitoring device 2. The monitoring device 2 includes an information processing section 1o, a working downlink signal receiving section 11N, a backup downlink signal receiving section LIE, a downlink signal distribution section 14, a downlink received signal selection section 13, and a working uplink signal receiving section 11'. N, a preliminary uplink signal receiving section 11'E, an information transmitting section 12, an uplink signal distribution section 14', and an uplink received signal selection section 13'. Each of these devices and parts includes the working downlink, uplink communication line 6.7, backup downlink,
They are connected via uplink communication lines 8 and 9 as shown in FIG.

The working downlink communication line 6 and the backup downlink communication line 8 from the centralized monitoring device 1 are connected to the working downlink signal receiving section 11N and the backup downlink signal receiving section 11E of the monitoring device 2 in the monitoring station 18.
connection is established and data communication is performed. Also,
The working downlink communication line 6 and the backup downlink communication line 8 are each read directly by the downlink reception signal selection section 13. Working downlink signal receiving section 11N.

The signal received by the preliminary downlink signal receiving section LIE is sent to the information processing section 10. The information processing unit 1o analyzes the presence or absence of these signals and errors to determine which of the lines 6 and 8 is normal. Based on this determination, the information processing unit 10 selects a signal 110 that controls the downlink received signal selection unit 13.
b to control the downlink received signal selection unit 13, select the normal side of the working downlink communication line 6 and the backup downlink communication line 8, and send out the valid signal determined by the own station to the lower station. The output of the downlink received signal selection section 13 is sent to the downlink signal distribution section 1
4 to the lower station to both the working downlink communication line 6 and the backup downlink communication line 8.

Further, the uplink signals transmitted from the lower station via the working uplink communication line 7 and the protection uplink communication line 9 are transmitted to the working uplink signal receiving section 11'N and the protection uplink signal receiving section 11' of the monitoring device 2.
The information is received by the information processing unit 1o through the respective E and analyzed. Further, the working uplink communication line 7 and the protection uplink communication line 9 are each connected to an uplink reception signal selection section 13'.

Working uplink signal receiving section 11'N and backup uplink signal receiving section 1
The signal received at 1'E is received by the information processing unit 1o, which checks the validity of the signal, and sends a control signal 110a based on the result to the uplink reception signal selection unit 13', where the current uplink communication The normal side of the line 7 and the backup uplink communication line 9 can be selected, and the information processing unit 10 operates the signal selection unit 13' based on its own judgment, so that it can select either the working uplink communication line 7 or the backup uplink communication line 9. A normal signal is sent to the upper station via the uplink signal distribution unit 14' and both the working uplink communication line 7 and the protection uplink communication line 9, and this signal is a valid signal determined by the own station. corroborate.

In addition, a response signal from the local station is created in the information processing unit 10, sent to the uplink signal distribution unit 14' via the information transmission unit 12, where it is combined with the signal sent from the lower station, and is used for the current uplink communication. It is transmitted to the upper station via both the line 7 and the backup uplink communication line 9.

(Effects of the Invention) As explained above, in the present invention, each monitoring device analyzes the signals transmitted from the upper station and the lower station through the working line and the protection line, respectively, and determines the effective communication line. We have measures in place. By distinguishing for each monitoring station section whether to use the input signal from the working line or the input signal from the protection line, the monitoring function can be fully demonstrated even in the case of failures at multiple locations. The present invention has such effects.

[Brief explanation of the drawing]

Section 1 is a block circuit diagram showing an embodiment of the communication line system according to the present invention applied to a centralized monitoring system, and FIG. 2 is a block circuit diagram showing a conventional communication line system for the centralized monitoring system. 1... Central monitoring device, 2-5... Monitoring device, 6...
・Working downlink communication line, 7...Working uplink communication line, 8.
...Backup downlink communication line, 9...Backup uplink communication line, 1
0... Information processing unit, II... Current downlink signal receiving unit,
LIE...Preliminary downlink signal receiving section, 11゛N...Working uplink signal receiving section, 11゛E...Preliminary uplink signal receiving section,
12... Information transmission unit, 13... Downlink received signal selection unit, 13'... Uplink reception signal selection unit, 14... Downlink signal distribution unit, 14'... Uplink signal distribution unit, 15. ...Signal distribution unit, 16...Signal coupling unit, 17...Intensive monitoring station, 18-21...Monitoring station.

Claims (1)

[Claims] In a communication line system in which a centralized monitoring device and a plurality of monitoring devices are connected in cascade through two communication lines, one for current use and one for backup: The monitoring device: two downlink signal receivers each receiving a downlink signal transmitted via a communication line; two uplink signal receivers each receiving an uplink signal transmitted from a lower station via both the working and backup communication lines; ; Receive signals via the two downlink signal receiving sections and the two uplink signal receiving sections, and detect the presence or absence of upstream or downlink signals of the working and backup communication lines, and the presence or absence of errors in these signals; an information processing unit that outputs a control signal for selecting the normal side of the working communication line or the backup communication line, and also creates and outputs an uplink response signal; a downlink reception signal selection unit that receives a control signal for selecting a normal side of the communication line and selects a normal downlink communication line of the working or standby downlink communication line; a received signal selection unit that receives a control signal for selecting either the normal side of the uplink communication line or the backup uplink communication line, and selects the normal side of the uplink communication line of the working or protection uplink communication line; a downlink signal distribution unit that divides the downlink signal selected by the downlink received signal selection unit into two and sends it to each of a working downlink communication line and a backup downlink communication line connected to the lower station; created by the information processing unit; an information transmitting section that sends an uplink response signal; combining the upstream signal selected by the upstream received signal selection section and the upstream response signal output from the information transmitting section, dividing the resulting signal into two and transmitting it to the upper station; A communication line system characterized by comprising an uplink signal distribution unit that sends out signals to a working uplink communication line and a protection uplink communication line connected to each other.