Collision Avoidance System Design Based On Multi-Information Fusion

At present,with the rapid development of rail transport in our country,many related technologies have been developed.At the same time,the requirements for safety have never stopped.Due to its high quality and fixed line,railway transportation will result in severe results once the accident occurs.Most of the accidents are caused by the lack of information exchange between trains on the same line.As a result,the position information between them cannot be communicated to each other in an accurate and real-time manner,eventually causing train collisions.Just like the "9.27" subway collision accident happened in Shanghai in 2011,it revealed the shortcomings of our national train collision warning technology.We need to improve train positioning early warning and collision avoidance technology.Based on the above text,an improved multi information fusion system for train collision avoidance is proposed.This paper first analyzes the design requirements of train positioning collision avoidance,analyzes the key technologies needed for train collision avoidance system,and then the key technologies required for the train anti-collision system are compared and analyzed.Finally developed based on GPS positioning and dead reckoning technology for train positioning assisted collision avoidance system.On the basis of this,the software and hardware platform required for the system are designed.In the hardware part,the characteristics of each sub-module are analyzed in detail.According to their characteristics,they are designed and combined to build the final hardware platform.The software part first establishes the operation flow of the whole system.On this basis,we design detailed interfaces,data storage and information fusion algorithm according to the characteristics of each sub module,and finally design the early warning display software block.After the above work is completed,the performance test of each sub-module is performed on the final multi-information fusion train collision avoidance system.After the performance of the submodule meets the requirements,the overall system test is performed.After testing,this set of system can provide real-time information for the train driver on the position and speed of the train and other trains within the network in the case of weak or even disappeared GPS signals.When the train is within the warning distance,the system immediately sends out warning information to realize the train's early warning and anti-collision function.The test results show that this set of anti-collision system has practical value.