Title:
OSCILLATORY WAVE JUDGING DEVICE
Document Type and Number:
Japanese Patent JP3922127
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To an oscillatory wave judging device capable of accurately judging the state of a target object based on an oscillatory wave generated upon the actuation of the object without using a particular sensor.
SOLUTION: The oscillatory wave judging device is characterize in that it is provided with: an oscillatory wave inputting means 2 which detects and inputs an oscillatory wave generated upon the actuation of a target object 1; first means 6 and 71 which frequency-separate and extract a first oscillatory wave at a predetermined frequency band generated in response to the actuation of the target object 1 from the input oscillatory wave; second means 6 and 72 which generate a second oscillatory wave changing based on the degree of movement of the target object 1 and having an output level related to the first oscillatory wave; a judging means 10 which judges the state of the target object based on the first oscillatory wave and a threshold value; and adjusting means 8 and 9 which adjust the level of at least one of the first oscillatory wave and the threshold value to be given to the judging means 10 based on the output level of a second oscillatory wave.
Inventors:
Anmen, Takashi
Murozaki, Takashi
Suganuma, Takashi
Murozaki, Takashi
Suganuma, Takashi
Application Number:
JP2002000223643
Publication Date:
March 02, 2007
Filing Date:
July 31, 2002
Export Citation:
Assignee:
DENSO CORP
International Classes:
G01N29/14; G01M7/02; G01N29/12; G01N29/14; G01M7/00; G01N29/12; (IPC1-7): G01N29/14; G01M7/02; G01N29/12