Design And Implmentation Of Electric Vehicle Detector Based On Android

With the rapid development of our economy, the increasing of car ownership has caused a lot of problems, such as environmental pollution, energy crisis. These problems have seriously affected the sustainable development of the society. To get rid of this predicament, our governments established a series of policies to support the research of new energy vehicles. The development of new energy vehicles are considered to be the important measures to reduce environmental pollution and ease energy crisis. Electric vehicle is the priority one to be developed, because it has the characteristics of no pollution and zero emissions. Compared with the traditional cars, there are a lot of electronic control units in electric vehicle. In the process of production and maintenance, how to check the running status of electronic control units and how to find failure parts quickly are worth research. To meet the functional requirements, this dissertation designs and realizes a electric vehicle detector based on Android.The dissertation analyzes the functional requirements of the detector, which contains display of the CAN network data and update of the firmware. Based on these functional requirements, the overall architecture of the system is designed and the suitable implementation scheme for the application is analyzed.This dissertation designs and develops a detector based on the Android platform. The hardware platform of the terminal including power supply module, memory module, CAN network data acquisition module and wireless data transmission module. i.M X6Q is chosen as central processor, it can be utilized to processes the collected data and sends it through the wireless transmission module.In the process of software development, the software hierarchy chart is given. Firstly, developing the underlying software, such as, the transplantation of the driver and FlexCAN middleware development. Then, programming the applications if the software system work properly.Finally, testing each modules of the detector and joint testing the whole system based on the designed platform. It has been proved that the CAN bus data can be collected and send properly through the wireless network under laboratory environment. Then, install the Android information terminals on the light electric logistics vehicle. The detector collects data from vehicle every 500 ms, displays the information in real time and implements the function of information monitoring and vehicle controller program download function. At present, the detector is running well on light electric logistics vehicle, have achieved fairly good results. Application results show that the developed detector with stability and better real-time performance, meet the design requirements.