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Development of an Automatic Comprehensive Condition Diagnosis System for Inductive Loop Detector Using Magnetic Field  

Kim, Nam-Sun (아주대학교 교통연구센터)
Lee, Seung-Hwan (아주대학교 환경건설교통공학부)
Oh, Young-Tae (아주대학교 환경건설교통공학부)
Lee, Choul-Ki (아주대학교 ITS대학원 교통연구센터)
Kang, Jeung-Sik (유티정보(주))
Publication Information
Journal of Korean Society of Transportation / v.23, no.5, 2005 , pp. 123-134 More about this Journal
Abstract
This research aims at developing a new method which can replace the existing method. known as the quality factor(Q factor) method by an L-R-C test for use in the performance test of inductive loop detectors(ILD) being installed and maintained. In this study, a sensor to detect a magnetic field in terms of frequency and intensity, a method to collect field data, the method of analysis, and the method of diagnosis were developed. An automatic diagnosis system which was developed to overcome those drawbacks has the following features : First, field data is collected automatically by a test vehicle equipped with magnetic field sensors that is running can be said to along the roadway and. thus, the new system completely overcome the roadway and, thus, the new system can be said to completely overcome the inefficiency of the existing method second, since the magnetic fold generated from the ILD is the final output of the whole system of ILD, the existing problem has been solved. third. since each of the detection area by height is collected by the magnetic sensors installed by height. a basic for the identification of the vehicle types to be detectable and the setting of adjustment factors has been made. For the automatic diagnosis system developed during in this study, a reliability test was carried out by comparing vehicle times of ILD installed ideally.
Keywords
자동진단시스템;루프검지기;자기장;주파수;검지영역 속도;점유시간;유지보수;
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