CN212556288U

CN212556288U - Railway broken rail monitoring device

Info

Publication number: CN212556288U
Application number: CN201922050562.8U
Authority: CN
Inventors: 何潞; 陈建平
Original assignee: Jiangsu Qitai Internet Of Things Technology Co ltd
Current assignee: Jiangsu Qitai Internet Of Things Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2021-02-19
Anticipated expiration: 2029-11-25

Abstract

The utility model provides a railway broken rail monitoring device, which comprises a network management server, an optical fiber monitoring host connected with the network management server, the network management server and a maintenance management terminal, wherein the optical fiber monitoring host is connected with a sensing optical fiber; the sensing optical cable comprises a standard single mode optical fiber, is installed in a manner of being clung to a railway steel rail, and is connected with a light source through one end of the optical fiber, and the other end of the optical fiber is connected with a receiver. The utility model discloses an optical signal is the carrier, does not receive electromagnetic interference, and essence is safe, and long service life is suitable for work under the adverse circumstances. The broken rail position can be accurately positioned by utilizing the optical time domain reflection principle.

Description

Railway broken rail monitoring device

Technical Field

The utility model relates to a railway communication technology field specifically is a railway broken rail monitoring devices.

Background

With the rapid development of economy and the continuous progress of society in China, the travel demand of people is increased explosively. In the last decade, railways in China are rapidly developed, the construction scale of high-speed railways is getting larger, railway transportation has the characteristics of safety and high efficiency, and more railways are selected for going out, particularly civil flows, student flows, exploration flows and tourism flows in the spring transportation period, so that the number of passengers is increased geometrically compared with the number of passengers going out at ordinary times. The high-speed railway train is always in a high-speed running state, various deformations are easily caused to the track, the deformations not only influence the high-speed and stable running of the train, but also greatly reduce and weaken the strength and stability of the track structure and even break the track when the deformations accumulate to a certain degree, and influence the driving safety.

The existing rail break monitoring technology adopts a rail flaw detection measurement technology, the technology mainly detects, analyzes and records two rails of a line by a flaw detection vehicle, and the flaw defect of the rail is evaluated manually, the detection technology has poor precision and high cost, and the high-speed railway is increasingly busy, so that real-time and on-line monitoring cannot be realized; the other mode adopts the online rail break detection of the track circuit, and has the biggest characteristic that when the rail break occurs, an alarm signal can be immediately sent to a column control center to meet the real-time dynamic rail monitoring requirement, but the track circuit is greatly influenced by the parameter condition of a track bed, faults such as short circuit between rails, false alarm of red light bands and the like often occur in areas with small track bed leakage impedance and abundant rainwater in the south, and in addition, the defects of complex electrified section backflow system, complex structure of an electrical insulation track circuit, high manufacturing cost, difficult maintenance and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve prior art's problem, provide a railway broken rail monitoring devices, optic fibre both is transmission medium, is sensing element again, and because of the optic fibre transmission loss is little, consequently can realize dozens of even measurement of hundred kilometers. Because the optical signal is adopted as the carrier, the optical fiber cable is free from electromagnetic interference, is intrinsically safe, has long service life and is suitable for working in severe environment. The broken rail position can be accurately positioned by utilizing the optical time domain reflection principle.

The utility model comprises a network management server, an optical fiber monitoring host connected with the network management server, the network management server and a maintenance management terminal, wherein the optical fiber monitoring host is connected with a sensing optical fiber; the sensing optical cable comprises a standard single mode optical fiber, is installed in a manner of being clung to a railway steel rail, and is connected with a light source through one end of the optical fiber, and the other end of the optical fiber is connected with a receiver.

In a further improvement, the wavelength of the light source is 1550 nm.

The utility model has the advantages that:

1. the device is not influenced by weather, environment and temperature and works all day long;

2. the optical fiber is insulated, and an electric environment is not used, so that false alarm and missing alarm caused by an electric circuit are avoided;

3. monitoring in real time, wherein the rail breakage positioning precision reaches +/-2 m;

4. transmitting signals through the optical fiber, and giving an alarm in real time, wherein the response time is not more than 1 s;

5. power supply is not needed along the line, the equipment is simple, and the installation is convenient;

6. the maintenance cost is low.

Drawings

Fig. 1 is a schematic diagram of the module of the present invention.

Fig. 2 is a schematic structural diagram of a sensing optical cable.

Fig. 3 is a schematic diagram of the implementation steps of the present invention.

Detailed Description

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

The module schematic diagram of the utility model is shown in fig. 1, and comprises a network management server, an optical fiber monitoring host connected with the network management server, the network management server and a maintenance management terminal, wherein the optical fiber monitoring host is connected with a sensing optical fiber; the sensing optical cable comprises a standard single mode optical fiber, is installed to be attached to a railway steel rail, and is connected with a light source through one end of the optical fiber, and is connected with a receiver through the other end of the optical fiber, as shown in figure 2.

The optical fiber is not only a transmission medium, but also a sensing element, and the optical fiber has small transmission loss, so that the measurement of dozens or even hundreds of kilometers can be realized. Because the optical signal is adopted as the carrier, the optical fiber cable is free from electromagnetic interference, is intrinsically safe, has long service life and is suitable for working in severe environment. The broken rail position can be accurately positioned by utilizing the optical time domain reflection principle.

The utility model discloses the implementation step is shown in figure 3:

1) installing a single-mode communication optical cable close to the steel rail;

2) the fracture and deformation of the steel rail cause the fracture or deformation of the optical cable;

3) the fiber host receives Rayleigh scattered light signals, positions the fracture or deformation position of the steel rail (sensing fiber) by an optical time domain principle, and sends an alarm;

4) the network management server receives the alarm and the alarm position of the optical fiber host, and controls the relay to send a dry contact signal to the train control system;

5) the network management server simultaneously sends out an audible and visual alarm to remind the watchman that the rail is broken or the deformation accident occurs;

6) and the watch keeper manages the network management server and the optical fiber monitoring host through the maintenance management terminal.

The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.

Claims

1. The utility model provides a railway broken rail monitoring devices which characterized in that: the optical fiber monitoring system comprises a network management server, an optical fiber monitoring host, the network management server and a maintenance management terminal, wherein the optical fiber monitoring host is connected with a sensing optical fiber; the sensing optical cable comprises a standard single mode optical fiber, is installed in a manner of being clung to a railway steel rail, and is connected with a light source through one end of the optical fiber, and the other end of the optical fiber is connected with a receiver.

2. A railway rail break monitoring device as claimed in claim 1, wherein: the wavelength of the light source is 1550 nm.