METHOD FOR ESTIMATING LENGTH OF ROLLER CHAIN BY USING FRICATIVE SOUND

WIPO Patent Application WO/2020/226331

A1

The present invention relates to a method for estimating the length of a roller chain by using the fricative sound generated by the friction between a roller and the groove of a sprocket when the roller chain is rotated by engaging with the grooves of the sprocket. A method by which a roller chain length estimation device estimates the length of a roller chain by using the fricative sound, according to an embodiment of the present invention, comprises the steps of: acquiring noise data generated when the roller chain including a plurality of links rotates rollers; detecting fricative sound signals from the noise data; detecting peaks in the fricative sound signals; calculating the distance between the peaks so as to calculate the time interval required for each of the plurality of links to rotate the roller; detecting a normal link from among the plurality of links on the basis of the time intervals for the plurality of links; converting the time interval of the normal link into digital data according to a sampling period; acquiring a chain length corresponding to one item of data of the digital data by using the time interval of the normal link and a configured length; and acquiring the pitch of each of the plurality of links by using the chain length corresponding to the one item of data.

KIM KWANG SOON (KR)
LEE CHANG HO (KR)

PCT/KR2020/005617

November 12, 2020

April 28, 2020

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KOREA CONVEYOR CO LTD (KR)

G01B21/02; F16G13/06; G01H15/00

KR101815507B1	2018-01-05
JP2000028324A	2000-01-28
KR20040110421A	2004-12-31
US20150008097A1	2015-01-08
US20040226805A1	2004-11-18
KR102101824B1	2020-04-20

NAMCHON PATENT AND LAW FIRM (KR)

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