Abstract
This paper presents a nonuniform node configuration of wireless sensor networks (WSNs) for long-span bridge health monitoring. The methodology and strategy of two-phase node arrangement for nonuniform WSN configuration are firstly presented, and then numerical examples are carried out by a long-span suspension bridge. Three cases, which are four sensor nodes distributed on one side of the girder, ten sensor nodes distributed on one side of the girder, and eight sensor nodes distributed averagely on two sides of the girder, are employed. In case I and case II, three schemes that are the nonuniform node configuration arranged by the two-phase node arrangement method, the uniform nodes configuration, and the independent sensor nodes configuration are used for comparison. And in case III, two schemes that are nonuniform nodes configuration and the independent sensor nodes configuration are adopted. The results indicate that the nonuniform node configuration can balance energy consumption, eliminate “energy hole,” and maximize network performance effectively, which shows the most outstanding performance when compared with other conventional node configurations. So, the efficiency of the two-phase node arrangement method is validated.
Highlights
In recent years, a large number of long-span cable-supported bridges have been built throughout to fulfill the requirements of modern society for advanced transportation systems [1], for example, the Akashi Kaikyo Bridge with a main span of 1990 m in Japan, the Great Belt Bridge with a main span of 1624 m in Denmark, and the Runyang Suspension Bridge with a main span of 1490 m in China [2]
The locations of sensor nodes are optimized by improved generalized genetic algorithm (GGA); in the second phase, the relay nodes are configured by nonuniform node arrangement method
For the GGA, there are a number of parameters that are problem specific and need to be explored and tuned so that the best algorithm performance is achieved
Summary
A large number of long-span cable-supported bridges have been built throughout to fulfill the requirements of modern society for advanced transportation systems [1], for example, the Akashi Kaikyo Bridge with a main span of 1990 m in Japan, the Great Belt Bridge with a main span of 1624 m in Denmark, and the Runyang Suspension Bridge with a main span of 1490 m in China [2]. A large number of methodologies of optimal wired accelerometer placement have been developed for long-span bridge health monitoring based on different. In real-world SHM of long-span bridges, linear network that the wireless sensors are deployed on the girder one by one along a straight line is adopted in common since the span is much larger than the height In this type of WSN, multihop and single-line route are employed, and the nodes near the sink bear heavy transmission load. Hossain et al [32] provided an analytical method for placing a number of nodes in a linear array such that each node dissipates the same energy per data gathering cycle It can be concluded from the presented achievements that nonuniform node distribution is a good configuration with respect to eliminating “energy hole.”.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Distributed Sensor Networks
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
