Data Analysis of Inertial Sensors for Train Positioning Detection System

Abstract Train positioning detection information is fundamental for high-speed railroad inspection, making itpossible to simultaneously determine the status and evaluate the integrity of railroad equipment. This paper presentsthe results of measurements and an analysis of an inertial measurement unit (IMU) used as a positioning detectionsensors. Acceleration and angular rate measurements from the IMU were analyzed in the amplitude and frequencydomains, with a discussion on vibration and train motions. Using these results and GPS information, thepositioning detection of a Korean tilting train express was performed from Naju station to Illo station on theHonam-line. The results of a synchronized analysis of sensor measurements and train motion can help in thedesign of a train location detection system and improve the positioning detection performance. Keywords: Train Positioning Detection System, Inertial Measurement Unit, Spectrogram, Railroad Inspection[Received: September 23, 2014, Revised: October 20, 2014, Accepted: October 29, 2014] *한국철도기술연구원광역도시교통연구본부, ** ,한국철도기술연구원 신교통연구본부 Corresponding Author: Korea Railroad ResearchInstitute, 176 Cheoldo bangmulgwan-ro, Uiwang-si, Gyeonggi-do, 437-757, Korea (E-mail: sjkim@krri.re.kr)