Study On The Wireless Technology In The Construction Of The Espressway

Based on the related standards at home and abroad, documents and on-site construction, the paper summarizes the applying characteristics of wireless technologies in construction of an expressway. And it all put forwards to how to utilize the more and more widely applied wireless technologies to improve and better the expressway information management system and how to extend the expressway management relying on the wireless technologies.Based on many wireless technological equipments, the paper respectively introduces the performance and makes a contrast among the high-quality and good-reputation products of Israeli Alvarion, Cisco and Motorola, takes the features and requirements of the expressway construction into account, completely gives consideration to the performance parameters and safety and conducts a detailed research and applicability analysis from the aspects of area of coverage, traffic speed, applying environments and etc, which will provide a comprehensive and complete reference for wireless networking .of expressway construction in the future.In the aspect of monitoring program and wireless LAN design, it adopts wireless network camera and outdoor wireless AP to link the camera in the front end with the monitoring center (LAN) to transmit data, which integrates the advantages of a traditional monitoring system with IT industry. In the aspect of network structure design, it emphasizes on the reasonability and reliability of the network structure, reserve gain of the wireless link, link throughput, quick construction, cost performance ratio and etc. Research on the subject solves some long-standing problems in expressway construction management and provides a reference for the design and construction of wireless technological information management in the future.