The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2016
Filed:
Feb. 07, 2012
Koichiro Nanba, Nagoya, JP;
Nobuyuki Okada, Okazaki, JP;
Takahiro Sasauchi, Toyokawa, JP;
Tatsuya Mita, Aichi, JP;
Tomohiro Otsuka, Gifu, JP;
Tomonori Goto, Nagoya, JP;
Yasuki Nakakura, Narashino, JP;
Naoki Tokuda, Hamamatsu, JP;
Koichiro Nanba, Nagoya, JP;
Nobuyuki Okada, Okazaki, JP;
Takahiro Sasauchi, Toyokawa, JP;
Tatsuya Mita, Aichi, JP;
Tomohiro Otsuka, Gifu, JP;
Tomonori Goto, Nagoya, JP;
Yasuki Nakakura, Narashino, JP;
Naoki Tokuda, Hamamatsu, JP;
NIPPON SHARYO, LTD., Aichi, JP;
CENTRAL JAPAN RAILWAY COMPANY, Aichi, JP;
Abstract
This sensor state determination system is a sensor state monitoring system capable of accurately determining whether or not a detecting sensor used with a railroad vehicle is in an abnormal state. This system includes: a detecting sensor capable of detecting a physical value acting upon the railroad vehicle; and an electronic control device. A monitoring sensor equivalent to the detection sensor is installed at a position equivalent to the position of the detection sensor. The electronic control device is provided with a determination means (coherence calculation section, state determination section) that computes, based on a first signal detected by the detecting sensor and a second signal detected by the monitoring sensor, a coherence value indicating a correlation between the signals. The electronic control device determines that the detecting sensor is in an abnormal state if the coherence value is smaller than a preset abnormality determination value.