J2ME based bluetooth portable monitoring & diagnosis system for fuel cell city bus

Under the background of the increasingly serious global energy crisis and environmental problems, governments and enterprises around the world have paid more attention to the development of a new generation of green energy. The fuel cell city bus has become a favorite choice for new energy vehicles due to its free emission, high energy conversion efficiency as well as long driving endurance. A fuel cell city bus consists of varied components, such as fuel cell stacks, power batteries, DC/DC converter, electronic motor and etc. A distributed control system is developed for the fuel cell bus which has been facing many challenges from complex electromagnetic environment, demands of online monitoring and diagnosis, wide working temperature range, energy dynamic optimization (EDO) ability and etc. In order to meet the requirements of the challenges, a series of novel electronic technologies has been successfully implemented in the control system of the fuel cell city bus. This paper presents a portable monitoring & diagnosis system via Bluetooth communication for the fuel cell city bus. The monitoring terminal could be a cell phone, PDA or any other smart mobile devices.