Design and realization of double-mode communication platform based on CVIS

With the rapidly development of economy, traffic congestion has become a bottleneck restricting of the development of the urban economy. As the core of future development and direction of intelligent transportation, the CVIS (Cooperative Vehicle Infrastructure System) is the key to solve the urban traffic congestion problems. And the wireless communication technology of high quality is the key point of research in CVIS. The work of this paper is to build the wireless communication platform of CVIS and research problem of information interaction between DSRC (Dedicated Short Range Communications) and WIFI (Wireless Fidelity) under environment of CVIS. This paper analyzes the application between DSRC and WIFI in CVIS and builds a wireless communication platform based on PCM-9562. Through the study of car-following model with single lane, this paper achieves data exchange between application and communication platform by using GPS information. Combined with MapX, the communication platform completes the real-time display of position, velocity and driving strategy. The result of test shows that double-mode communication platform based on CVIS can realize the real-time transmission of data effectively and assist driver to get the information of position and velocity from itself and other cars and finally provide effective reference information to the driver in the pattern of car-following.