PROBLEM TO BE SOLVED: To provide an insulation diagnosis antenna device which can surely detect a variation of even a weak electromagnetic wave which is generated by partial discharge by a ground coil, and can accurately diagnose the insulation of the ground coil, and an insulation diagnosis method.SOLUTION: An insulation diagnosis antenna device comprises antenna units 13 having reflection bodies 11 which are formed of a part of elliptic cylindrical faces 15 with reference axes O1 positioned in vertical directions as centers, reflect electromagnetic waves S which are generated from a propulsion system ground coil, and concentrate the waves to the reference axes O1, and rod-shaped antenna conductors 12 which are arranged in parallel with the reference axes O1 in internal positions of the reflection bodies 11, and receive electric waves which are reflected by the reflection bodies 11. The antenna units 13 are arranged so that opening parts 16 of the elliptic cylindrical faces 15 of the reflection bodies 11 are oriented to the propulsion system ground coil, and arranged in a plurality of pieces while being displaced to a traveling direction of a vehicle which progresses to a prescribed direction.SELECTED DRAWING: Figure 4
【課題】本発明は、地上コイルにて部分放電により発生する僅かな電磁波の変動も確実に検知することができ、正確な地上コイルの絶縁診断を行うことが可能な絶縁診断用アンテナ装置及地上コイルの絶縁診断方法を提供する。【解決手段】縦方向へ位置する基準軸O1を中心とした楕円筒面15の一部により形成され、推進系地上コイルから発生した電磁波Sを反射して該基準軸O1に集中させる反射体11と、該反射体11の内部位置にて基準軸O1と平行に配置されて、該反射体11で反射した電波を受信する棒状のアンテナ導体12と、を有するアンテナユニット13を具備し、アンテナユニット13は、反射体11の楕円筒面15の開口部16が推進系地上コイルに向くように配置され、かつ所定方向へ進行する車両の走行方向へそれぞれ位置をずらして複数配置されたことを特徴とする。【選択図】図4
INSULATION DIAGNOSIS ANTENNA DEVICE AND INSULATION DIAGNOSIS METHOD OF GROUND COIL
絶縁診断用アンテナ装置及び地上コイルの絶縁診断方法
2016-11-10
Patent
Elektronische Ressource
Japanisch
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