CN102161344A

CN102161344A - Track axle detection method based on stress variation

Info

Publication number: CN102161344A
Application number: CN2010106078158A
Authority: CN
Inventors: 冯晓星; 王新安; 葛彬杰; 王金泊
Original assignee: SHENZHEN SILIANG MICROSYSTEM CO Ltd
Current assignee: SHENZHEN SILIANG MICROSYSTEM CO Ltd
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-08-24

Abstract

The present invention discloses a track axle detection method based on stress variation. The method comprises stress variation sensing units that can be densely arranged in a track, a plurality of axle information processing units and monitoring centers. Each stress variation sensing unit comprises one or more sensors capable of sensing track stress variation. The axle information processing units preprocess the received sensing signal or data of the stress variation sensing units and then send to the monitoring centers. The monitoring centers take charge of receiving data sent by the plurality of axle information processing units along the track line in a relatively large area and analyzing and processing, and data can also be exchanged among the monitoring centers so that the occupation and idle condition of the track in a much larger area can be obtained, thus intelligent and highly effective management of track traffic can be realized. The method provided in the invention has the characteristics of low cost, easy installation and flexible networking, and can realize real time monitoring of the occupation or idle condition of the track in a randomly large area for providing basis for train dispatch.

Description

Rail vehicle repacking survey method based on STRESS VARIATION

[technical field]

The present invention relates to track traffic monitoring field and sensor and circuit design field, but be specifically related to a kind of low cost, can expand the dense layout monitoring point based on track stresses variation identification, cover the method that train axle detects in the regional greatly arbitrarily track traffic, as the foundation of intelligent track-trafficization, high efficiency management.

[background technology]

Railway transportation and high speed railway passenger traffic are the lifeblood of national economy, and urban track traffic (be called for short city rail) is for alleviating urban traffic blocking, improving city atmospheric environment and have crucial meaning.

The signal system of railway transportation and city rail is the visual plant that transportation safety is produced, and whether require to detect in real time corresponding circuit or section has train occupation or go out clearly.Railway and city rail signal system adopt track circuit, electromagnetism meter axle and optical fiber transducer meter axle at present.

Patent of invention CN86103414 discloses a kind of track circuit, the advantage that it is specific such as simple in structure, with low cost etc.But the shortcoming that also has some self can't overcome, is commonly called as " pressing not dead " and the mutual short circuit of two tracks as track circuit shunting badness, and output takies red signal, occurs " red band ".

Utility model patent CN2337030 discloses a kind of electromagnetism meter axle technology, and this technology is to be core with electromagnetic induction sensor and computing machine, is aided with external device, and by the train number of axle that statistics is passed through, whether detection line has car.But, also there is following problem at present:

1) owing to adopt electromagnetic induction principle, be subject to electromagnetic interference, as thunder and lightning, even the spade of maintenance man all can produce interference;

2) device structure complexity, the cost height;

3) the fault rate height of the electromagnetic induction axle counting system of China, reliable type is poor.Core technology is monopolized by offshore company, and the main circuit plate need send external maintenance, and the cycle is long, the expense height.

Patent application 200910252831.7 discloses a kind of optical fiber grating sensing train meter axle technology, and this technology has characteristics such as accuracy rate height, good stability, protection against the tide and anti-electromagnetic interference, therefore is widely used in the engineering monitoring.But, there is following problem at present:

1) cost height, the sensor of the optical instrumentation of core and detection track strain signal costs an arm and a leg, and the individual big Local Area Network of track traffic that is beneficial to detects the monitoring layout.

2) a little less than the optical fiber anti-vibration ability, be not enough in the long along the line Distance Transmission of track, optical device is not suitable for installing nearby along the line at track to vibration sensing simultaneously.

[summary of the invention]

Main purpose of the present invention is exactly to solve intensive monitoring, stable detection, the big area monitoring problem that is difficult to realize in the existing track axle count technology, a kind of rail vehicle repacking survey method is provided, have low cost, high reliability, can be at track dense layout check point along the line, orbit occupancy and idle condition in the big zone of monitoring in real time, thereby as the foundation of intelligent track-trafficization, high efficiency management.

For achieving the above object, the invention provides the system that the intensive real-time monitoring track in a kind of big zone occupies with STRESS VARIATION sensing unit, axletree information process unit and the monitoring center of idle condition and form structure.The STRESS VARIATION sensing unit obtains to pass through on the track number and the orbit occupancy situation of axletree by STRESS VARIATION, other monitoring technology of comparing current use have extremely low cost, intensive mounting arrangement STRESS VARIATION sensing unit in can be on the track length less at interval zone, thus occupying and idle condition of track accurately obtained.The axletree information process unit can link to each other with one or more STRESS VARIATION sensing units, handles orbit occupancy and idle condition in the zone.Monitoring center can link to each other with one or more axletree information process units, handles an orbit occupancy and an idle condition in the bigger zone.Data exchange be can carry out between a plurality of monitoring center, thereby the orbit occupancy and the idle condition of whole rail traffic network obtained.Can be between STRESS VARIATION sensing unit of the present invention and axletree information, the processing unit, between axletree information process unit and the monitoring and control centre and between a plurality of monitoring and control centre by wireless or wiredly be connected and communicate by letter.

The invention has the beneficial effects as follows:

Utilize STRESS VARIATION, the taking and idle condition of the low-cost track of monitoring in real time can dense layout, and covers arbitrarily big track traffic zone, thereby grasps the real-time change of whole rail traffic network condition of service.The railway that solves the low cost not have for a long time to realize, high density, all standing takies the problem of setting up with the idle condition real time monitoring network, for intelligent track-trafficization, high efficiency is managed that foundation is provided.

[specific embodiment and description of drawings]

The application's feature and advantage will be by embodiment, in conjunction with the accompanying drawings.

For explaining conveniently, we are called AS with the STRESS VARIATION sensing unit, and the axletree information process unit is called AP, and monitoring center is called SC.By the interconnected orbit occupancy and the idle monitoring that just can realize any big zone of a series of AS, AP and SC, this kind structure comprises at least one AS and at least one AP.Among AP and the AS at least one is interconnected, as Fig. 1.Among SC and the AP at least one is interconnected, as Fig. 2.SC and SC's is interconnected, as Fig. 3.

AP and AS, AP and SC, SC and SC interconnected all can adopt wireless or wired mode.

Fig. 4 is the application-specific analysis of an embodiment of the present invention to Fig. 6, and every 100m along the line installs a STRESS VARIATION sensing unit AS at track, and every 1Km installs an axletree information process unit AP, adopts wired mode and 10 AS interconnection, as Fig. 4; Every 100Km installs a monitoring and control centre SC, adopts GPRS or 3G communication module and 100 AP interconnection, as Fig. 5.For the rail line of omnidistance 2000Km, 20 monitoring and control centres are by optical fiber interconnections, and intercommunication can be known taking and idle condition of whole 2000Km rail line mutually.

Fig. 6 is the embodiment of a kind of AS, comprises a STRESS VARIATION sensor SS, acquisition of signal pre-processing module, communication interface and a power module among the AS.AS STRESS VARIATION sensor SS can obtain track stresses to be changed, thereby judges the train axle number and the orbit occupancy idle condition of process on the track; Signal pre-processing module carries out pretreatments such as digitalisation to the signal of sensing unit, and communication module modulates original data and to the AP transmission, power management module provides power management.

The data that AS sends comprise at least:

The sign of AS (each AS has unique identification);

Geographical location information (coordinate);

Monitoring time precision (can be as accurate as millisecond);

Institute's real-time STRESS VARIATION signal in monitoring track place;

The time gaps of monitoring time precision, monitoring or transmission data etc. all can be provided with.

Above content be in conjunction with a kind of embodiment to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims

1. the system that occupies with STRESS VARIATION sensing unit, axletree information process unit and the monitoring center of idle condition of one kind big intensive real-time monitoring track in zone forms structure, it is characterized in that: comprise at least one STRESS VARIATION sensing unit, at least one axletree information process unit and at least one monitoring center, described each STRESS VARIATION sensing unit comprises at least one can roll the sensor that produces STRESS VARIATION by the perception track owing to train axle, by the axletree information process unit, connect with at least one monitoring center.

2. STRESS VARIATION sensing unit other monitoring technology of comparing current use have extremely low cost, intensive installation in can be on the track length less at interval zone, such as 100m, 50m, STRESS VARIATION sensing unit of 10m layout, thus occupying and idle condition of track accurately obtained.

3. an axletree information process unit can link to each other with one or more STRESS VARIATION sensing units, handles orbit occupancy and idle condition in the zone, such as 1Km, and 5Km.Monitoring center can link to each other with one or more axletree information process units, handles an orbit occupancy and an idle condition in the bigger zone, such as 100Km, and 500Km.Data exchange be can carry out between a plurality of monitoring center, thereby the orbit occupancy and the idle condition of whole rail traffic network obtained.

4. certain tracks commuter vehicle repacking examining system as claimed in claim 1 is characterized in that: described STRESS VARIATION sensing unit comprises at least one sensor that can the perception track stresses changes.The STRESS VARIATION sensing unit obtains after the track vibration information, sends to the axletree information process unit by wired or wireless mode.Axletree information process unit counter stress changes the data of sensing unit and carries out sending to monitoring center by wired or wireless mode after the pretreatment.Monitoring center realizes the intensive monitoring in big zone by the STRESS VARIATION sensing unit of big regional dense layout, as the foundation of intelligent track-trafficization, high efficiency management.

5. monitoring center as claimed in claim 1 structure, it is characterized in that: the STRESS VARIATION situation of the track that reflection covers that provides by a plurality of axletree information process units that connect this monitoring center, comprehensive analyses is got rid of and is disturbed, and obtains taking and idle condition of track.The interconnection of a plurality of monitoring center can cover bigger zone.