Development of measuring apparatus for contact wire wear by sodium vapor lamps

Author

Kusumi, Shunichi ; Nagasawa, Hiroki ; Mochizuka, Hiroya

Author_Institution

Railway Tech. Res. Inst., Japan

Volume

3

fYear

2000

fDate

2000

Firstpage

1404

Abstract

In electric railways in Japan, inspection cars are running at commercial speed, in order to measure wear of contact wires. We have developed an apparatus to measure the contact wire wear with a light source of sodium vapor lamps of simpler mechanism and smaller size than that of current apparatus. This apparatus measures the width of wear surface by an optical method, and converts it into a residual height. This apparatus has been used for JR Yamagata Shinkansen in JR. On the other hand, we miniaturized this apparatus further, and developed an overhead contact line inspection system for rail-and-road cars. The results of field tests show that it can be used at a standard deviation of measuring error of 0.3 mm in daytime

Keywords

CCD image sensors; inspection; mechanical variables measurement; metal vapour lamps; overhead line mechanical characteristics; pantographs; railways; test equipment; wear testing; 0.3 mm measuring error; JR Yamagata Shinkansen; Japan; contact wire wear; electric railways; field tests; inspection cars; measuring apparatus; overhead contact line inspection; rail-and-road cars; sodium vapor lamps; wear of contact wires; wear surface; Current measurement; Electric variables measurement; Inspection; Lamps; Light sources; Rail transportation; Size measurement; Testing; Velocity measurement; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.848706

Filename

848706