Research Of LKJ Information Transmission Based On Wireless Network

With rapid railway development,increasing train speed asks for higher traffic safety.Traffic safety,presently,mainly depends on train operation monitoring device(short for LKJ).While,information recorded by these devices will be dumped and updated through handheld dump after locomotive entering warehouse.There are some shortcomings: on the one hand,it needs many staff to work on locomotive which is not good for on site work and management,on the other hand,omission leads to tardy update,which has potential safety hazard.Therefore,data wireless transmission to update and reload LKJ data is a effective solution.It is significant and practical to train monitoring system.This thesis designs a data wireless transmission system for locomotive to transmit traffic safety data from locomotive to ground,so that ground staff could detect locomotive failures in time by monitoring data,checking locomotive operation and driving record,including shaft temperature,motor,air condition,etc..This article is composed of the following sections: chapter 1 introduces current situation of both domestic and oversea wireless transmission on the train.chapter 2 briefly analyzing its technological principle.The thesis expounds theoretical supports and technical points of designed system with comparison and actual condition,and points out requirements analysis,aiming to design a data interaction system that can stabilize data transmission and meet speed requirement.chapter 3 introduces overall design,including composition and principle.chapter 4 introduces its hardware in details,including the function of MCU chip,WIFI module and mobile unit module.Furthermore,the thesis designs circuit diagram and explain function and principle respectively.chapter 5 introduce software in details,including programming,communication and software system.chapter 6 introduce the wireless transmission platform,and built a wireless transmission platform to meet the design requirements.chapter 7 test the system results ande summarizes the system,then make outlook to further research.