Title:
CONTACT FORCE MEASUREMENT METHOD AND CONTACT FORCE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/136021
Kind Code:
A1
Abstract:
Provided is a contact force measurement method and a contact force measurement device with which the contact force of a pantograph can be measured using image processing, even for pantographs with a structure that prevents the collector head and spring from being directly photographed. Images of a pantograph (100) are captured, a plurality of springs (102) is combined, and a virtually synthesized spring (1) is deemed to exist in the center of the pantograph (100) in the width direction. From the images, the partial relative displacement between the position corresponding to a collector head (101) in the center of the pantograph (100) in the width direction and a collector head support (104) is calculated. The elasticity of the virtually synthesized spring (1) is calculated by determining the difference between the relative displacement and the natural length of the virtually synthesized spring (1). The spring reaction force is determined by multiplying the spring constant of the virtually synthesized spring (1) by the elasticity, the lifting force acting on the collector head is determined from the vehicle travel speed data when the images and time have been synchronized, and the spring reaction force, inertia force, and lifting force are then added to determine the contact force.
Inventors:
MATSUBARA Kazutaka (1-1 Osaki 2-chome, Shinagawa-k, Tokyo 29, 〒1416029, JP)
松原 一隆 (〒29 東京都品川区大崎二丁目１番１号 株式会社明電舎内 Tokyo, 〒1416029, JP)
FUJISAWA Takamasa (1-1 Osaki 2-chome, Shinagawa-k, Tokyo 29, 〒1416029, JP)
松原 一隆 (〒29 東京都品川区大崎二丁目１番１号 株式会社明電舎内 Tokyo, 〒1416029, JP)
FUJISAWA Takamasa (1-1 Osaki 2-chome, Shinagawa-k, Tokyo 29, 〒1416029, JP)
Application Number:
JP2011/059140
Publication Date:
November 03, 2011
Filing Date:
April 13, 2011
Export Citation:
Assignee:
MEIDENSHA CORPORATION (1-1 Osaki 2-chome, Shinagawa-ku Tokyo, 29, 〒1416029, JP)
株式会社 明電舎 (〒29 東京都品川区大崎二丁目１番１号 Tokyo, 〒1416029, JP)
Railway Technical Research Institute (2-8-38, Hikari-cho Kokubunji-sh, Tokyo 40, 〒1858540, JP)
公益財団法人鉄道総合技術研究所 (〒40 東京都国分寺市光町二丁目８番地３８ Tokyo, 〒1858540, JP)
MATSUBARA Kazutaka (1-1 Osaki 2-chome, Shinagawa-k, Tokyo 29, 〒1416029, JP)
株式会社 明電舎 (〒29 東京都品川区大崎二丁目１番１号 Tokyo, 〒1416029, JP)
Railway Technical Research Institute (2-8-38, Hikari-cho Kokubunji-sh, Tokyo 40, 〒1858540, JP)
公益財団法人鉄道総合技術研究所 (〒40 東京都国分寺市光町二丁目８番地３８ Tokyo, 〒1858540, JP)
MATSUBARA Kazutaka (1-1 Osaki 2-chome, Shinagawa-k, Tokyo 29, 〒1416029, JP)
International Classes:
G01L5/00
Attorney, Agent or Firm:
MITSUISHI Toshiro et al. (Mitsuishi Law and Patent Office, 9-15 Akasaka 1-chome, Minato-k, Tokyo 52, 〒1070052, JP)
Claims: