Zigbee Train Maintenance System Handset Software-based, Research And Design

To improve the efficiency of the train examine, and change the current lagging work method in each station, a train examine software system based on ZigBee technology is designed in this thesis. The whole system is composed of the data collecting part and the data delivering part in the front and the data accepting and processing part in the end. It's core processor adopt JN5121 mold, and it's network structure adopt MESH. The examiner can make use of the hold machine on the spot to record the information of the train examination, and deliver the information through the transit station to PC which process it and then record it into HMIS.Followed with the normal and innovational embedded system development process, this thesis firstly investigated the examine process on the spot, after analysing the function request of the train examine system it made out the entire system scheme,.Then in making reference to the normal development mode and design method of the embedded software system, we adopted Event-Driven model to design the total frame of the software system according to the environment. In the meantime we made use of the software design method of the DARTS to partition the task in the system and then completed the detailed design and realization of pivotal task mold based on the theory of Finite State Machine. Finally the thesis still abided by related software testing principle and method to test and analyze applying software parts and data communication parts and insured the possibility and credibility of the system.Currently, the ZigBee technology is mainly applied in wireless sensor network and delivered little data that automatically collected by sensor node. But this thesis apply ZigBee technology in small district and with slowly moving PDA equipments to deliver lots of literal data collected on the spot. therefore, it is a new kind of application of ZigBee technology, and have considerable reference value to the circumstances that demand staff member collect data on the scene.