公开(公告)号：US20190092172A1

公开(公告)日：2019-03-28

申请号：US16081223

申请日：2017-03-01

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Yuichi AHIKO ,  Kotaro NAKAMURA ,  Hiroki SHIMOYAMA

IPC: B60L3/00 ,  B60L3/12 ,  B60L5/02 ,  B60L5/39 ,  H01F27/42

Abstract: Provided is a collected current monitoring device. A transformer current acquisition unit acquires a current value Ip of a current flowing through a part of a plurality of transformers. A total collected current calculation unit calculates a current value Iall of a collected current supplied by a plurality of current collectors from the current value Ip by using a following Equation (1): Iall=Ip×(Mall/Mp). A collected current acquisition unit acquires a current value IX of a collected current supplied by the current collector(s) other than one current collector. The collected current calculation unit calculates a current value IY of a collected current supplied by the one current collector by subtracting the current value IX from the current value Iall.

公开(公告)号：US20180312064A1

公开(公告)日：2018-11-01

申请号：US15771673

申请日：2016-11-01

Applicant: CENTRAL JAPAN RAILWAY COMPANY

Inventor： Yuichi AHIKO ,  Kotaro NAKAMURA ,  Hiroki SHIMOYAMA

IPC: B60L5/38 ,  B60L3/00 ,  G01M17/08

CPC classification number: B60L5/38 ,  B60L3/00 ,  B60L3/12 ,  B60L2200/26 ,  G05B23/024

Abstract: A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.