公开(公告)号：US10060810B2

公开(公告)日：2018-08-28

申请号：US14772056

申请日：2014-03-13

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Suwoong Lee ,  Soono Kwon ,  Youngjin Kim

IPC: G01L5/16 ,  G01B11/16 ,  G01B13/24 ,  G01L1/02 ,  G01L1/00

CPC classification number: G01L5/16 ,  G01B11/16 ,  G01B13/24 ,  G01L1/00 ,  G01L1/02

Abstract: An apparatus for sensing the operation of an air cushion includes an air cushion with the inside provided with a plurality of patterns filled with air; a part for sensing the air pressure inside the air cushion so as to output a corresponding air pressure sensing signal; a part for sensing the temperature inside the air cushion so as to output a corresponding temperature sensing signal; a photographic part arranged in the lower part of the air cushion for photographing the plurality of patterns so as to output an image of each pattern; and a control unit for determining the air pressure inside the air cushion by measuring the force exerted on the air cushion in the Y-direction based on the temperature, air pressure and contact area, and by measuring the force exerted on the air cushion in the X-direction based on the displacement of the contact area.