How to measure contact surface pressure distribution

Abstract

Abstract PURPOSE:To obtain a two-dimensional contact surface pressure distribution measuring method which is efficient and has high accuracy from the total brightness distribution of light on the finely uneven surface of pressure sensing foil by detecting the reflected light of light irradiating the uneven surface and measuring the brightness distribution of the light on the uneven surface, and measuring a contact surface pressure distribution from the brightness distribution of the light. CONSTITUTION:A test-piece 10 which has an uneven surface where pressure is already transferred such as the pressure sensing foil has the flat part of its uneven surface irradiated at 45 deg. by using two right left and right rod-shaped fluorescent lamps 11 and 11'. Then V grooves of the uneven foil are arranged in parallel to the two fluorescent lamps 11 and 11'. Reflected light from the test-piece is detected by a CCD camera 12, whose detection signal is inputted to a camera interface 13 and DA-converted; and the signal is led to a personal computer 14 through an A/D converter 15. The computer 14, a disk drive 17, a printer 18, and a display 19 are used to input, store, and output an image and generated a histogram.

Inventors

• 👤 Hiroshi Ike
• 👤 池　浩

Bibliographic Details