Wireless links between sensor-device control stations in long-span bridges

Long span bridges are today conceived and designed in such a way that a control system assists their performance under extreme loading and/or exceptional conditions. Long span bridges see the hardware of such a control system made by sensors, control devices and controllers. In the control system architecture, it can be located in stations along the bridge. The problem is how to allow these stations to communicate each with the other. Classical wired links are quite inappropriate for both installation and maintenance drawbacks. This paper discusses the architecture and the implementation of a wireless link between two of these control stations.