Title :
A sensor placement measure for impact detection in structural health monitoring
Author :
Melkonyan, Arsen ; Akopian, David ; Chen, C. L Philip
Author_Institution :
Electr. & Comput. Eng., Univ. of Texas at San Antonio, San Antonio, TX, USA
Abstract :
This paper studies the validity of horizontal dilution of precision (HDOP) measure to evaluate sensor network geometries when localizing impacts in structural health monitoring (SHM). First HDOP is defined similarly to navigation applications. Even though several low complexity closed-form solutions have been proposed recently, HDOP measure has been theoretically justified only for iterative least squares approach. The localization errors of popular impact localization methods are experimentally collected and compared with HDOP data for validation. The experimental setup is also described. It is shown that HDOP in general correlates with the positioning error and can be used to characterize geometry.
Keywords :
condition monitoring; distributed sensors; impact (mechanical); iterative methods; least squares approximations; structural engineering; horizontal dilution of precision; impact detection; impact localization methods; iterative least squares; sensor network; sensor placement measure; structural health monitoring; Acoustic sensors; Computer vision; Computerized monitoring; Electric variables measurement; Geometry; Iterative methods; Least squares methods; Position measurement; Sensor systems; USA Councils; Acoustic position measurement; Acoustic radiators; Position measurement;
Conference_Titel :
Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-2793-2
Electronic_ISBN :
1062-922X
DOI :
10.1109/ICSMC.2009.5346673
