Train anticollision system on basis of sound wave communication and anticollision method thereof

Abstract

The invention relates to a train anticollision system on the basis of the sound wave communication and an anticollision method thereof, relates to the technical field of the rail transit and solves the technical problem of improving the safety of a train in a tunnel. The system comprises a plurality of anticollision communication units which are respectively arranged on each train; each anticollision communication unit consists of two sound wave communication subunits which are respectively arranged on a corresponding locomotive and a corresponding tail; each sound wave communication subunit comprises a sound wave transmitting device, a sound wave receiving device and signal control processing equipment; and a next train transmits a sound wave detection signal to a previous train, the previous train transmits a sound wave response signal after receiving the sound wave detection signal transmitted by the next train, and the next train calculates the distance between the next train and the previous train according to transceiving time difference between the sound wave detection signal and the sound wave response signal and then judges the collision risk of the train according to a calculating result after receiving the sound wave response signal transmitted by the previous train. The system and the method which are provided by the invention are particularly suitable to apply in the urban subway line.

Description

technical field [0001] The invention relates to rail transit technology, in particular to a train anti-collision system and an anti-collision method based on acoustic wave communication. Background technique [0002] Once a collision accident such as rear-end collision or collision occurs in rail vehicles including urban rail transit trains, it will cause serious loss of life and property; especially when a collision accident occurs in a tunnel, the rescue and handling of the accident are extremely inconvenient and more serious. hazards and impacts of accidents. [0003] At present, most countries adopt the Train Control System (TCS, or Automatic Train Control, ATC) system for subway lines to ensure the safety of trains in order to avoid train collision accidents, although its technology development and application have been It is very mature, but in the past ten years, train safety accidents still occur from time to time, especially the serious rear-end collision accidents...

AI Technical Summary

Problems solved by technology

[0005] Existing train anti-collision technologies are based on electromagnetic wave sensing and detection mechanisms. The defect of this type of technology is that when the train line is in a tunnel, the anti-collision technologies based on electromagnetic wave sensing and detection mechanisms cannot be effectively utilized. For subway trains running in long-distance tunnels for a long time, its defects are especially obvious, mainly in:

[0006] 1) In tunnels, especially in long-distance tunnels, trains cannot use electromagnetic waves to directly establish communication with relays (such as satellites) outside the tunnel;

[0007] 2) Factors such as the curvature of the tunnel and the narrow space limit the effective distance of the vehicle-mounted image sensing method;

[0008] 3) Due to the influence of the internal facilities in the tunnel and the limitation of space, the medium and high frequency electromagnetic waves in the tunnel attenuate quickly and the echoes are complex, and the subway line has up and down slopes and curves, resulting in blind detection areas, so electromagnetic wave radar cannot be used effectively in the tunnel effect

[0009] It can be seen that the application effect of the existing train anti-collision technology in the tunnel is not good, especially in the non-straight long-distance tunnel, it is basically impossible to effectively improve the driving safety of the train, and it cannot well avoid the occurrence of train collision accidents. , the application effect in the subway line is poor

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