A train approach early warning method and system based on train-ground signal fusion

Abstract

A train approach early warning method and system based on train-ground signal fusion, comprising: a TDCS system server sends part of the train running status information to a TDCS conversion server; a handheld terminal sends a protection area to the TDCS conversion server through a wireless network, and the TDCS conversion server receives After the protected area is sent by the handheld terminal, the acquired train running status information is compared with the location information of the protected area to determine whether there is a train entering the protected area; when a train enters the protected area, the TDCS conversion server sends a message through the wireless network. The early warning information is sent to the handheld terminal, and the handheld terminal performs early warning. The invention uses TDCS data and radio data to realize the integration of remote inter-station early warning and real-time approach early warning. The closer the train is to the work site, the more accurate the early warning data is, and it effectively warns the on-site workers to avoid vehicles when they get off the road.

Description

technical field [0001] The invention belongs to the field of locomotive safety protection, and in particular relates to a train approach early warning system based on train-ground signal fusion. Background technique [0002] Safety is an eternal theme in the railway industry. In many railway fields such as train service, electricity service, engineering work, power supply, etc., it is inevitable to carry out construction work along the railway line in daily work. Although the railway management department has proposed various rules and regulations, the on-site operators still lack the intuitive experience of the train approaching. Technical means, personal and equipment safety accidents occur from time to time. Railway train approaching early warning technology is mainly applied to the safety protection of personnel and tools on the railway construction site. It continuously monitors the speed and distance of trains approaching the construction section through technical mea...

AI Technical Summary

Problems solved by technology

[0006] The train approach warning technology based on 800M locomotive radio has been publicly supported by the relevant technical standards of the Railway Corporation. However, the 800MHz radio station is greatly affected by the on-site operating environment during use, which makes it subject to many restrictions in specific on-site operations.

The main manifestation is that the nominal value of the signal transmission distance of the 800MHz locomotive radio station is 2.5 kilometers, and the actual measurement in the field is generally not more than 2 kilometers, resulting in a tight time for the evacuation of operators and tools, which is not as good as the current manual observation and early warning train approach information have obvious advantages

[0007] The train approaching early warning technology based on GPS satellite positioning judges the approaching state of the train based on the change of the geographic information coordinates of the train and the construction site, which is limited by the accuracy of satellite positioning in practical applications.

The main manifestations are that firstly, it is necessary to install designated satellite positioning devices for all trains and release data uniformly, which is unrealistic due to the management models of different railway bureaus; It is too large to meet the needs of on-site protection; the third is that there is a difference between the geographical coordinate position distance and the actual mileage distance of the railway line, and there is a huge gap in complex road conditions such as curves and stations

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