21-09-2017, 01:00 PM
In this work, a wireless measurement system based on wireless sensor networks (WSN) was developed for large bridges. The general architecture of the wireless system is introduced; the design of wireless nodes and the principle of the central station are given in detail. Experiments are carried out in the laboratory and Nanjing Bridge IV Yangtze River to verify the performance of the designed system. Experimental results show that the performance of the designed system is improved over the transmission distance. The system's anti-blocking capability and packet loss rate of data transmission are also improved compared to traditional wireless sensor systems. Meanwhile, with the external detection interfaces, the system has superior performance in features of high sensitivity and ultra low frequency. You can quickly and easily perform the detection of structural vibrations for a large bridge in its construction, future operation and maintenance periods with a great practicality and high value of application.