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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.:

US 6170333 B1

PDFFull Text
Date of Patent:
Jan. 09, 2001

Filed:

Mar. 13, 1998

Apparatus for detecting abnormal sound and method for judging wrong in machine

Applicant:
Inventors:

Michihiro Jinnai, Takamatsu, JP;

Hiroshi Yamaguchi, Kita-gun, JP;

Yoshinao Ishihara, Tokyo, JP;

Jun Ohshima, Tokyo, JP;

Fujitaka Taguchi, Yokohama, JP;

Masahiro Arakawa, Funabashi, JP;

Yoshikazu Kidu, Iruma, JP;

Assignee:

Entropy Software Laboratory, Inc., Kagawa, JP;

Attorney:
Primary Examiner:

Richard A Moller

Int. Cl.
CPC ...
G01H 1/700 ;
U.S. Cl.
CPC ...
G01H 1/700 ;
Abstract

A standard pattern vector of a normal sound, an input pattern vector of a monitored sound, a positive vector of a reference pattern, and a negative vector of the reference pattern are produced. Regarding each element, the positive vector is increased by an absolute value of a difference between the input pattern vector and the standard pattern vector if the input pattern vector is greater than the standard pattern vector, and the negative vector is increased by the absolute value if the input pattern vector is less than the standard pattern vector. A difference of a kurtosis between the positive vector and the negative vector is calculated, wherein a center of the reference shape is relatively moved to a position of each element of the positive and negative vectors respectively at every calculation. A geometric distance value between the standard pattern vector and the input pattern vector is obtained by calculating a square root of a sum of a square of each kurtosis difference.

Find Patent Forward Citations

Jinnai, Michihiro. (2001). Apparatus for detecting abnormal sound and method for judging wrong in machine (U.S. Patent No. 6170333). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6170333

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