| Summary: | 碩士 === 大同大學 === 機械工程學系(所) === 95 === This thesis focuses on the design of tiny resonance generators, and evaluates / tests the performance of every prototype. The concept of a tiny resonance generator is taking the advantage of resonance under the nature frequency to enlarge the motion of a spring vibration, and keep the magnet going through the coils repeated to create the induced current. This kind of generator has the advantage of simple structure and using common materials. There are 5 kinds of prototype to be created in this thesis by combining different amount of magnet and coefficient of elasticity for spring at different location, and compare the performance of each prototype in order to find out the simplest design of a resonance generator, which can transfer the vibration energy to electrical effectively. The result of my study can be concluded as following: at the nature frequency of 11Hz set amplitude under 200um, using a coil with 250 turns, 0.4 mm wire diameter and stack up 2 magnets connect to a spring with 0.04 coefficient of elasticity can create 368mv of induced current, which is the optimized design in this thesis.
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