Train Positioning and Velocity Measurement Method

Abstract

The embodiment of the present invention relates to a train positioning and speed measurement method. The vehicle control center controls the vehicle optical network communication node to send the first wireless spread spectrum communication signal, which includes the spread spectrum code of the vehicle optical network communication node; the first ground network node group The first ground network node in the system authenticates the train information according to the first spreading code and the monitored first wireless spread spectrum communication signal; when the authentication is passed, the first ground network node sends the second wireless spread spectrum communication signal; The second wireless spread spectrum communication signal includes the authentication information and the area code of the first ground network node; the vehicle-mounted optical network communication node receives the second wireless communication signal sent by the first ground network node, and transmits it to the vehicle-mounted control center; the vehicle-mounted control center The authentication information and area code of the second wireless communication signal transmitted by one or more vehicle-mounted optical network communication nodes within a certain period of time are analyzed and processed to obtain real-time position information and / or travel speed information of the train.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for locating and measuring a train. Background technique [0002] As the speed of the train increases, it is impossible to guarantee the safety of driving by completely relying on the sight of people and manually driving the train. The railway-specific communication directly serves the transportation production. It effectively connects the railway as a whole, and plays a vital role in ensuring the smooth operation of the railway and its safety and punctuality. [0003] my country's railway lines are multi-point and long, with large changes in geographical environment, road conditions, and climate conditions, which make it more difficult to realize wireless communication for railway-specific communication, and it is difficult to build an effective and reliable wireless signal system. Especially with the continuous improvement of the speed of railway transport train...

AI Technical Summary

Problems solved by technology

Long-distance wireless spread spectrum communication due to climate change, such as rain, snow, fog and other severe weather phenomena will not only reduce the quality of wireless spread spectrum communication, but even interrupt communication, so that wireless spread spectrum communication will lose the high-speed rail informatization and The status of an important supporting means of intelligence will directly lead to the failure of high-speed rail informatization and intelligence, not to mention the real-time positioning and monitoring of trains

[0006] In addition, interference can cause serious problems for rail applications

Interference will affect the results of wireless spread spectrum positioning. Due to the parallel existence of other wireless communications in rail transit, such as artificial wireless blocking or unauthorized access points installed by other users near rail transit, the actual track and the calculated There will be a large deviation between wireless spread spectrum positioning, and even cause communication interruption or serious error, affecting railway safety

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