2014-09-012024-05-14https://scholars.lib.ntu.edu.tw/handle/123456789/655974摘要：自動充電與能量壽命延長，是移動式消費者電子產品與感測網路目前遇到的主要挑戰之一。在許多應用情況下，定期更換電池勢必提高維修次數，其他相關成本也相對應提升，如此一來是非常要不得的。近來，出現了一種有能力將裝置周圍的能量轉為電能，進而使用在裝置本身能量來源的技術，或稱為能量擷取技術。能量擷取係將裝置周圍的能量(如，太陽能、溫差、機械能)做能量轉換，並儲存成有用的電能。在眾多能量種類中，機械能來源存在於大多數環境(如: 交通路段、機械加工…等等場所)。儘管如此，能量擷取要應用在複雜的實際做動上，還有一段不小的距離。對於能量擷取這項技術，已有許多不同領域的研究投入其中。但能量擷取涵蓋的範圍極廣，若從任何一個特定角度來看，都只是片面的最佳化，而無法全然的做最佳化。因此，本計畫將能提供一個將能量擷取從一個全域的角度來看待的最佳化，構想係將全領域細分為五個子領域作部分最佳化後，合而為一。其五個子領域各為: 1.將機械轉為電能之微型壓電能量擷取裝置設計: 我方實驗室目前製作之能量擷取裝置所產出之能量密度為目前世界之冠。將以此製程為基礎來設計寬頻率能量擷取裝置。 2.能量轉換、基材、與介面電路，三者所組成之機械系統偶合最佳化: 3.能量擷取介面電路廣域最佳化 : 著重於設計微型能量擷取裝置專用之非線性介面電路。 4.根據應用情境作裝置最佳化 : 有效的能量擷取系統之關鍵議題是利用非線性機械與非線性電性原理，以及其間的耦合來創造大寬頻。 5.最佳化能量管理技術與系統中之整合能量管理電路模組設計 : 為了與實際應用情形相符合，本計畫亦與產業夥伴合作，協助將本裝置轉為產品，整個系統不僅將有微壓電能量擷取裝置，也將與感測單元整合，以驗證其自我供電的可行性。 <br> Abstract: Mobile consumer devices as well as sensor networks are currently facing the challenge of autonomy for extended lifespan. The necessity of periodically replacing batteries raises maintenance issues and associated cost are prohibitive to many applications. Recently, the possibility of converting energy from the close environment of the device itself, or energy harvesting, has emerged. Energy harvesting consists of converting an energy source directly available to the system (solar, thermal or mechanical for instance) into useful electricity. Among all, mechanical energy, as a source is commonly available in many environments (e.g., road traffic, machinery, etc…). However, challenges to adapt to the real-life complex excitation still hold. Different researches based on different fields had already been performed, but none of which can entirely optimize the overall system. Therefore, the objective of BESTMEMS is to provide such an approach that consists of conceiving the harvesting system as a whole instead of seeing the device as a simple association of independent blocks which would lead to a sub-optimized system. The different issue blocks that would be put together is shown as below: 1.Development of a MEMS (Micro-ElectroMechanical System) transducer for mechanical to electrical energy conversion. 2.Optimization (in a global way) of the mechanical coupling between the transducer, the substrate and the electronic interface for harvesting. 3.Optimization (in a global way) of the electrical interface for energy extraction. 4.Device optimization with respect to the target applications. 5.Optimization of the power management strategy and development of integrated power management module. To be as close as possible to real world concerns, the project also includes a partner from industry that will help in developing a realistic global device, not only including the microgenerator, but also the sensing unit for the demonstration of the feasibility of such self-powered systems.