CN210745148U

CN210745148U - Railway leakage coaxial cable fault positioning monitoring system

Info

Publication number: CN210745148U
Application number: CN201922147532.9U
Authority: CN
Inventors: 张习帅; 赵化磊; 黄志刚
Original assignee: Tianjin 712 Communication and Broadcasting Co Ltd
Current assignee: Tianjin 712 Mobile Communication Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-06-12
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a railway leakage coaxial cable fault location monitoring system. The positioning monitoring system comprises n monitoring devices and a monitoring server, wherein each monitoring device is connected with a leaky cable through two combiners, each two combiners are connected to corresponding base stations, and each monitoring device is connected with the monitoring server through a monitoring data transmission link. The monitoring system adopts a B/S framework, the monitoring equipment uploads the monitored data to the monitoring server, and the monitoring server analyzes and processes the data. Each office terminal is accessed into the monitoring server to operate and check the monitored target. When the monitored target is abnormal in working state, the monitoring server informs a manager through the office terminal, so that the monitoring function is realized, and great convenience is brought to the maintenance of the railway communication equipment.

Description

Railway leakage coaxial cable fault positioning monitoring system

Technical Field

The utility model relates to a be applied to railway communication network monitoring system, in particular to railway leakage coaxial cable fault location monitoring system.

Background

The operation quality of the railway communication system is the key of the railway transportation organization and the safe operation. In actual engineering, when a train running in a tunnel uses an antenna to transmit signals, the signal transmission is often very difficult, and the electromagnetic wave effect used by mobile communication is poor, so that a signal busy area exists. The leaky coaxial cable (leaky cable) is a main method for solving the radio electromagnetic wave propagation limited sections such as tunnels and the like and realizing communication network coverage, and is important driving equipment for ensuring vehicle-ground data interaction.

Through the ground investigation of the actual operation conditions of a plurality of railway systems, the performances of the leaky cable and the antenna feeder are found to have important influence on the safe operation of the railway communication network. However, due to the difficulty of maintenance, some faults are difficult to find in time, which causes communication and vehicle-ground data interaction interruption and crises the driving safety of the railway. Therefore, the leakage cable state is monitored on line in real time, and the leakage cable monitoring system is of great importance to railway communication network optimization, operation and maintenance data and railway driving safety guarantee.

Disclosure of Invention

In view of the prior art situation, the utility model provides a railway leaky coaxial cable fault location monitoring system. The monitoring system adopts a B/S (browser/server) framework, the monitoring equipment uploads the monitored data to the monitoring server, and the monitoring server analyzes and processes the data. Each office terminal is accessed into the monitoring server to operate and check the monitored target. When the working state of the monitored target is abnormal, the monitoring server informs a manager through an office terminal (browser), so that the monitoring function is realized.

The utility model adopts the technical proposal that: the fault positioning and monitoring system for the leaky coaxial cable of the railway is characterized by comprising n monitoring devices and a monitoring server, wherein each monitoring device is connected with the leaky coaxial cable through two combiners, each two combiners are connected to corresponding base stations, and each monitoring device is connected with the monitoring server through a monitoring data transmission link.

The beneficial effects produced by the invention are as follows: the monitoring system organically combines a railway communication technology, a Web technology and a database, aims to provide a comprehensive management function for railway communication equipment (leaky cable), and brings great convenience to the maintenance of the railway communication equipment.

Drawings

Fig. 1 is a schematic view of the overall structure of the monitoring system of the present invention;

fig. 2 is a block diagram of the basic structure of the network management system of the monitoring server of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, the railway leaky coaxial cable fault location monitoring system comprises n monitoring devices and a monitoring server, wherein each monitoring device is connected with a leaky cable (full-name: leaky coaxial cable) through two combiners, each two combiners are connected to a corresponding base station, and each monitoring device is connected with the monitoring server through a monitoring data transmission link.

The monitoring equipment adopts MCU (model: LPC 4337). The MCU is a micro control unit for short, and has the functions of controlling the logic circuit to transmit signals to detect faults, calculating the standing wave ratio S of input and output voltages by combining the digital signal processing unit, and positioning the fault position.

The combiner is generally used at the transmitting end, and is used for combining two or more radio frequency signals transmitted from different transmitters into one radio frequency signal which is sent to an antenna for transmission.

Firstly, the monitoring equipment transmits a radio frequency signal out through a combiner for fault detection, and simultaneously, performs frequency mixing demodulation on an internal mixer and a fault reflection signal to obtain an important intermediate frequency signal; secondly, calculating input and output voltage standing wave ratios S based on the intermediate frequency signals, and performing fault analysis; and finally, sending the monitoring data to a monitoring server through a transmission link.

As shown in fig. 2, the monitoring server network management system includes 5 functional modules for user management, alarm management, device management, maintenance management, and log management. The main function brief introduction of each module is as follows:

a user management module: the method is divided into two roles of an administrator and a common user. The administrator can assign the authority to the common user, including substantive operations such as addition, deletion and modification of a monitoring area, a road section and monitoring equipment, freezing a common account and the like. And a common user can only log in by using an account to check the working state of the monitoring equipment, a system log and the like.

An alarm management module: and comprehensively managing the alarm of the monitoring equipment. Including the operating state of the device currently being monitored; the monitoring equipment which gives an alarm is operated to confirm or cancel; and establishing an equipment maintenance list according to the operation of the user, and the like.

A device management module: and performing operations such as increasing, deleting, checking, modifying and the like on the monitoring equipment. The system provides two working modes for the increase of the monitoring equipment, namely, the monitoring equipment is manually added, namely, basic information of the monitoring equipment, including equipment name, equipment ID, manufacturer, geographic position, base station and the like, is manually input; and secondly, automatic addition, namely when new monitoring equipment exists in the link, the system automatically queries a monitoring equipment list database, adds information of the monitoring equipment which is not recorded, and returns an operation result to inform a user.

A maintenance management module: setting a system alarm threshold value, checking an equipment maintenance list, equipment alarm history and the like. The equipment maintenance list is a list established by the system according to the alarm frequency of the system so as to prompt a user that the communication facilities of the section of the area may need to be largely repaired or replaced.

A log management module: and the safe operation of the system is ensured. The module mainly records the working state of the system and the operation records of all users.

And the user inputs an access address in an address bar of the browser and logs in the system by virtue of an account number and a password. After the user logs in successfully, the system displays the working state list of the monitored equipment by default. The user can check the working state of each monitored device, and corresponding processing is carried out when the alarm comes.

Claims

1. The fault positioning and monitoring system for the leaky coaxial cable of the railway is characterized by comprising n monitoring devices and a monitoring server, wherein each monitoring device is connected with the leaky coaxial cable through two combiners, each two combiners are connected to corresponding base stations, and each monitoring device is connected with the monitoring server through a monitoring data transmission link.