METHOD AND DEVICE FOR MEASURING SUBSIDED SHAPE OF CUSHION

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for reproducibly measuring transformation ratio of a cushion pressurized by a human body while conquering any conventional shortage. SOLUTION: The device has a sensor wherein a plurality of joint pieces are flexibly connected each other, those pieces on one end are fixed to the reference position while those on the other end are to be free ends. For determining a subsided shape of the cushion through the accumulation of bent angles from a sensor portion on the reference position to a sensor portion on the other free end, it detects any bent angle formed between each of the contiguous joint pieces to measure the subsided shape by adding a compensating rate, in order to reduce any cumulative error of the bent angle between each of the joint pieces.