| The large volume and short-lived of conventional chemical batteries can not meet the supply of energy needs for wireless sensor nodes. The micro-generator which has the mierits of samll size, long-lived, maintenance-free and many other advantages could convert the energy obtained from the environment to electrical energy, and gradually become an international Micro-energy research focus. The study of micro-energy sources on the wireless sensor technology and micro energy technology development is of great significance.On the basis of the analysis of micro harvester'status at home and abroad, the esperiment was carried out by emplying the establishment of micro-cantilever piezoelectric harvester continuum model, and analyzed different factors on the generator performance, developed a Micro wind harvester prototype for the corresponding test and analysis. The primary research work of this paper was as follows:(1)Analysis of micro wind harvester at home and abroad of the research status ;(2)Piezoelectric cantilever-type harvester continuous model was established, verified by experiments;( 3 ) Cantilever-type finite element model of the piezoelectric generator was established , and further verified the theoretical model .On the theory of the generator, the electrode arrangement, effect of mass on the generator power output and intrinsic frequency of the generator had been studied;(4)Proposed a new micro-assembly process of a micro wind generator, and studied the assembly technology of wind power generation, and made the prototype. Some of output characteristics of the generator, such as effect of the bluff body, the direct of wind, length of soft beam and presence of mass on the generator were studied .The structure of micro wind generator had been optimized. When the wind speed was 19 m/s and the load was 60 k?, the tested maximum output power was 322μW.
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