Abstract
A simplified car-sharing system has been developed for an official car or a particular group using. In such condition, low management cost is more important than strictly technical management. In this research, the user′s smart phone is used for car-sharing reservation by accessing the reservation server with 3G mobile wireless. The user′s smart is also used for connecting the car′s key control unit with local wireless. By using the local wireless communication, no mobile communication expenses are incurred as the formal car-sharing system do. Besides, in this new system, no 3G communication protocol is need, which simplified the microcontroller′s task. A personal authentication technic, RSA encryption, is also implied to prevent smart phone forgeries. Finally the developed system and hardware are applied into the micro electric vehicle (EV) and a social car-sharing experiment has proved the practical usefulness.
