Design And Applied Research Of Micro Power System With Multiple Wind-Induced Vibration Energy Harvesters

With the rapid development of microelectronics technology,MEMS technology and wireless communication technology,microelectronic devices and micro low-power systems have been widely applied in the fields of national defense,aerospace,biomedicine,communication and so on because of small volume,light weight,and many other advantages.In contrast,it is emergent to solve the problem of the miniaturization of energy devices.Vibration energy is a kind of clean energy which exists widely in the natural environment.Instead of traditional power supply,it is the key research direction in the field of micro energy that convert the ambient vibration energy into electric energy to provide stable energy for the electrical and mechanical systems.So the integrated design and applied research of micropower system based on multiple energy harvesters has great important scientific meaning and practical value.For requirements in aerospace,weapon equipment and other applications,based on the single wind-induced vibration energy harvester independent researched by Microsystem research center of Chongqing University,the integrated design and application of micropower system with wind-induced vibration multi-energy harvesters were presented in this thesis.According to output characteristics of wind-induced vibration energy harvester,in order to improve the output of micropower system to ensure the stable and reliable operation of microelectronic devices and micro low-power systems,the thesis finished the design of the integrated structure of multiple energy harvesters,completed the power management and wireless sensor application circuit design.Combined with the application,completed the integrated packaging design of MEMS micropower system,developed the prototype of micropower system.And with the help of the MEMS performance test platform,the output performance of the micropower system prototype was tested and the wireless sensor experiment was carried out.Finally obtained the satisfactory experimental results.In this thesis,the main research contents included: described research background and significance of the subject,researched and analyzed the status of the micropower systems at home and abroad by reviewing a large number of Chinese-English literatures,the integrated design and application of micropower system with wind-induced vibration multi-energy harvesters is proposed.Analyzed the operating principle and physical model of electromagnetic vibration energy harvester,designed the integrated structure of energy harvester,made the overall circuit scheme of power management and application of micropower system.Completed the schematic design,PCB board production,and the program design.According to the application environment and combined with MEMS processing technology,finished the integrated packaging structure design,and assembled prototype of the energy system.Then the performance of the prototype is tested,and finished the wireless sensor experiment,analyzed the results.The results show that the designed micropower system meets the requirements.