Commenced in January 2007
Paper Count: 30172
RF Permeability Test in SOC Structure for Establishing USN(Ubiquitous Sensor Network)
Abstract:Recently, as information industry and mobile communication technology are developing, this study is conducted on the new concept of intelligent structures and maintenance techniques that applied wireless sensor network, USN (Ubiquitous Sensor Network), to social infrastructures such as civil and architectural structures on the basis of the concept of Ubiquitous Computing that invisibly provides human life with computing, along with mutually cooperating, compromising and connecting networks each other by having computers within all objects around us. Therefore, the purpose of this study is to investigate the capability of wireless communication of sensor node embedded in reinforced concrete structure with a basic experiment on an electric wave permeability of sensor node by fabricating molding with variables of concrete thickness and steel bars that are mostly used in constructing structures to determine the feasibility of application to constructing structures with USN. At this time, with putting the pitches of steel bars, the thickness of concrete placed, and the intensity of RF signal of a transmitter-receiver as variables and when wireless communication module was installed inside, the possible communication distance of plain concrete and the possible communication distance by the pitches of steel bars was measured in the horizontal and vertical direction respectively. Besides, for the precise measurement of diminution of an electric wave, the magnitude of an electric wave in the range of used frequencies was measured by using Spectrum Analyzer. The phenomenon of diminution of an electric wave was numerically analyzed and the effect of the length of wavelength of frequencies was analyzed by the properties of a frequency band area. As a result of studying the feasibility of an application to constructing structures with wireless sensor, in case of plain concrete, it shows 45cm for the depth of permeability and in case of reinforced concrete with the pitches of 5cm, it shows 37cm and 45cm for the pitches of 15cm.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328110Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1221
 Park Seok Kyu, "Detecting Reinforcing Bars under Multi Boundary Layers and Void Shapes in Concrete Using Simulation Analysis Model of Electromagnetic Wave Radar", The KSCE Journal of Civil Engineering, Korean Society of Civil Engineers, 2006, pp.806-816
 Lee Jong Kuk, "The Experimental Study on Wall Sound Transmission Loss of Electric Waves for an Application of RTLS to Construction Field", The KIBC Journal, The Korea Institute of Building Construction, 2009, pp. 95-101
 Hong Seong Wuk, "The Basic Study on Internal Diagnosis of Concrete Slab using Probes of Underground Permeability Radar. The AIK Journal, Architectural Institute of Korea, 2007, pp. 51-58
 Lee Won Jin, "The Transmission Method of Data for Improvement of Reliability of Ubiquitous Sensor Network", Conference Scholarly Monographs, The Institute of Electronics Engineers of Korea, 2007, pp37-38.
 Moon Joon Soo, "The Study on Effective Arrangement of Wireless Network Energy". Conference Scholarly Monographs ( ), Korea Information Processing Society, 2004, pp10-12.
 You Ji Yeon, "The Study on Performance Experiment for the Application of RFID/USN Related System to Construction Industry", Conference Scholarly Monographs( ), Korea Institute of Construction Engineering and Management, 2007, pp.800-885