Research And Implementation On Warning Methods Of Driving Safety Assistance System For Coach Bus

Traffic accidents went up year by year in China, and the accident fata lities increased in evidence, especially for the coach bus. According to the country's road traffic accident statistics annals analysis by the end of2009, although China's coach quantities are accounted for only25.94%of the total, accident ratio are accounted for41.47%of the total.With the development of technology more and more driving safety assistance systems is going to equip in family car instead of coach bus,most of coach bus have not equip any safety assistance systems and the bus company even want not attach importance to design and manufacture beacause of costing.So, it seens has realistic significance with the reasearch on driving safety assistance system of coach bus.The main reasearch contents are as follow:(1) Discusses the present accident situation of coach bus and analysis the necessity of warning method. The coach bus are classified according to the kilometre definition and analyzes the driving characteristics of the coach bus and accident situation.The professional pilot questionnaire is designed to analyze in the demographic characteristics of the accident, morphological characteristics and the necessity of warning method;(2) Briefly introduced the ergonomic principles in the vehicle warning system application, discusses the design theory of vehicle warning way and principle, According to human engineering and the current situation of coach bus as well as the investigation of the dirvers,the paper designs the different warning method for different driving satety assistacne of coach bus and the way to determine the warning of the priority.(3) Discusses the warning system design and implementation. Mainly introduces the design of coach bus warning system and implementation process. The design of the hardware structure, the vehicle-mounted system equipment selection and installation, signal acquisition system realization are detailed in this paper. The circuit design for the power of the processing unit and the I/O information acquisition.and also brief introduces the system software development environment and realize effect.