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In recent years , as China 's rapid economic development, China's urban population is expanding, car ownership is gradually growing. Consequent urban traffic problems are becoming increasingly prominent, such as traffic congestion, traffic jams , noise pollution , air pollution , seriously affecting the city's sustainable development and the normal life of residents . Vigorously develop urban public transport is imperative. Intelligent transportation system is the modern control technology , positioning technology and wireless communication technology and other organic combination of technology , its construction can improve the bus company's enterprise management, improve the public transport system operational efficiency and service levels that are designed to solve the urban traffic question a fundamental solution . Intelligent vehicle terminal is intelligent transportation system source of information is the key to the system parts. This thesis study abroad intelligent transportation situation and the existing GPS, GPRS and other technologies , based on the proposed ARM-based bus intelligent vehicle terminal design and implementation , including the terminal design plan , key technologies , software design , product realization and so on. Overall design is described vehicle terminal in intelligent transportation system status, but also for their own overall structure and function of each module across is introduced. Key Technology introduces the vehicle terminal related to the intelligent newspaper stand , wireless communications, information storage technologies. In software design , introduces the use of RTX operating system, software design framework , communication protocol development , and for the interrupt and task the main function , gives a detailed flowchart . Product realization are described in the main module debug and functional test , and the final product did show. After several rounds of testing and modification , the intelligent vehicle terminal has achieved a smart newspaper stand , LCD liquid crystal display , wireless communications, SMS alarm , voice reading function, and in Xichang city bus lines in operation, to achieve the desired effect , by the drivers and passengers of praise, social response.
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