| As more and more electric cars into the taxi market, it is important to monitor and analysis electric taxi’s data such as location information, traffic state information and power battery information, thus to realize remote operation of electric taxis and warning in advance. Supported by the "major science and technology in Zhengzhou electric taxi demonstration platform" project, this article makes a research on Position Monitoring and Service Supporting System for Electric Taxi Based on "Mobile Internet +", not only laid a solid foundation for the design of electric taxi demonstration platform, but also can provide data support for the relevant scientific research.The work of this paper in the project is divided into two parts: first, to complete the design and construction of hardware platforms, including circuit design and PCB production, then implement the design and function module software platform framework, including completion of the microcontroller program monitoring terminal, monitoring service center software design, interface design and function implementation of Android mobile phone monitoring program. In addition, in the process of GPRS data communication, this paper innovative applications data compression algorithm based on half a byte algorithm, data compression and encryption is achieved, saved data traffic and at the same time improved the security of the data, this design is conducive to promoting the use of the system. Through this system, users can through mobile phone, PDA, websites and a variety of ways to get the position information of monitored electric taxi and terminal equipment collected relevant data information. The main works as follows:1. In-depth research of the present situation of the development of electric taxis monitor and service support system at home and abroad, analysis of the market and customer needs of the system.2. In this paper, the key technologies of the system applicationed including satellite positioning technology(Beidou/GPS), GPRS wireless communication technology were discussed, given the overall design framework and operating principles described herein System.3. Designing and implementing the integration of Beidou/GPS and GPRS function positioning monitoring terminal. The terminal device combines the Beidou, GPS positioning and advantages of the GPRS network positioning, making positioning reliability increased.4. Completed the design of Location Monitoring Center server software and Android client application.In the final of this paper, the whole system is tested, the results show that the system runs stably, meet the design requirements, achieved the functional effect of the intended design. |