660 タイヤ構造の電気容量変化を利用した無線ひずみモニタリング

概要

論文の詳細を見る
Strain monitoring of tires of automobiles in-service is quite effective to improve reliability of tires and design tools. In the previous study, authors have proposed a new wireless strain monitoring method that adopts a tire itself as a sensor with an oscillator circuit. In the present study, a new passive strain measurement system utilize electric capacitance change of steel wire reinforced tires is proposed and experimentally investigated. The passive wireless strain monitoring method makes use of the specimen cut from the tire as a condenser of a passive filter circuit. Deformation of the tire brings capacitance change of the tire comprises steel wire and rubber; the change of the capacitance makes the change of filtering frequency of radio wave. Measurement of the frequency of radio wave passed through the filter circuit enables us to measure the strain of the tire wirelessly. A rectangular specimen cut from a commercially available tire is adopted as a specimen. Tension test is performed and the change of filtering capacity is measured during the test. As a result, the method is experimentally proved to be effective for the passive wireless strain monitoring of tires.
一般社団法人日本機械学会の論文
2002-09-20