Rail train rear-end collision preventing system based on opened frequency band communication

Abstract

The invention discloses a rail train rear-end collision preventing system based on opened frequency band communication, and the rail train rear-end collision preventing system is characterized in that a train wheel comprises a wheel axle pulse sensor for collecting pulse generated by the rotation of a wheel axle; and a train comprises a positioning module, a first wireless digital transmission module, a second wireless digital transmission module, a distance calculation module, a warning module and a brake module, wherein the positioning module is connected with the wheel axle pulse sensor and used for calculating a position of the train; the first wireless digital transmission module is used for transmitting position information of the train to a train behind the train through a wireless signal of an opened frequency band; the second wireless digital transmission module receives the position information of a train in front of the train through a wireless signal of the opened frequency band; the distance calculation module is used for calculating the distance between two trains; the warning module is used for issuing alarm information when the distance of the two trains is less than a first preset value; and the brake module is used for emergency braking when the distance of the two trains is less than a second preset value. Through the rail train rear-end collision preventing system, a certain safe distance can be maintained between a front train and a behind train, which run on a rail, while the communication cost is saved and the communication stability is improved, and the rear-end collision accident of trains can be avoided.

Description

technical field [0001] The invention relates to a technology for preventing rear-end collision of rail trains, in particular to a technology for preventing rear-end collision of rail trains based on open frequency band communication. Background technique [0002] For a long time, rail transit has been considered the safest way to travel. However, in recent years, the incidence of rail transit accidents has increased. All have caused great harm to people's hearts, making people doubt the safety of rail transit for a while, and rail transit is different from automobiles in that it has a large passenger capacity. Once an accident occurs, the casualties are difficult to estimate. Therefore, for rail transit, the accident rate must be minimized. [0003] Traditional anti-rear collision measures include the following: laser ranging, anti-collision radar and ultrasonic anti-collision. These technologies are active collision avoidance technologies. The vehicle sends electromagneti...

AI Technical Summary

Problems solved by technology

However, it is difficult to implement the above-mentioned technology in rail transit, mainly because the above-mentioned technology is suitable for vehicles with a large operating space and the vehicle is always in a straight-line motion state, while the operating environment in rail transit is multi-tunnel and curved roads, so the above-mentioned Technology is difficult to apply to rail transit

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