Design of a Wireless Multi-Radio-Frequency Channels Inspection System for Bridges
This paper presents a Wireless Multi-radio-frequency Channels Inspection System (WMCIS) based on Wireless Sensor Networks (WSN) for the sake of bridge structural vibration inspection. The designed system consists of a wireless controller and eight wireless nodes with acceleration sensing units. The whole system has 64 collection channels, so every wireless node has eight 24-bit A/D channels. Integrated with acceleration sensing units, an embedded low-power micro-processing unit, a wireless transceiver unit, a large-capacity power unit, and a GPS time synchronization unit, the wireless node has the functions such as data collection, initial analysis, data storage, and wireless data transmission.