Abstract
Combining the new Fe-based magnetostrictive alloy for high-output oscillating power generation (Hirosaki University), the piezo-electric fiber containing a metal core(Chiba University and AIST) having stress-direction detection sensor and wireless module are installed inside of the rotation tire, a prototype wireless tire-sensor for wheel vibration and the distortion action from a road surface with vibration energy harvesting devices was developed as an preliminary experiment. From the information on modification and the vibration state of the grounding wheel side can be collected and analyzed in real time, the time-dependent changes of tire-condition and the dangers on the street such as a freeze, snowfall and road surface quality will be detected. It can be contributed to driving safety as well as an intelligent transport system for near future automobile society.
