DC 欄位 | 值 | 語言 |
dc.contributor | 臺灣大學: 工程科學及海洋工程學研究所 | zh-TW |
dc.contributor | 李世光;張培仁 | zh |
dc.contributor.author | 劉怡宏 | zh-TW |
dc.contributor.author | Liu, Yi-Hung | en |
dc.creator | 劉怡宏 | zh-TW |
dc.creator | Liu, Yi-Hung | en |
dc.date | 2010 | en |
dc.date.accessioned | 2013-03-27T08:01:10Z | - |
dc.date.accessioned | 2018-06-28T21:12:49Z | - |
dc.date.available | 2013-03-27T08:01:10Z | - |
dc.date.available | 2018-06-28T21:12:49Z | - |
dc.date.issued | 2010 | - |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/252479 | - |
dc.description.abstract | 近年來隨著微機電系統持續的發展進步以及對生醫技術產業這方面的發光發熱,這兩個領域相互整合的重要性也逐漸受到重視,無論是對體內外的疾病醫療或是被動式的量測監控,生醫產業與微機電系統之間的關係更是密不可分。然而目前體內植入式的量測晶片或醫療元件大部分僅以電池做為電源的供應來源,並不適合長時間的使用,故在本研究中提出了一個超聲波能量傳輸的架構,由體外將超聲波能源經由人體組織傳遞到體內,藉由壓電能源轉換器轉換成電能以供儲存及利用。本論文以壓電超聲波能量傳輸開始,利用鋯鈦酸鉛(PbZrTiO3, PZT)作為壓電換能器主體,加上以洋菜凍模擬人體組織,建立出一套壓電超聲波能量傳輸的量測系統,之後並對壓電換能器的電極加上菲涅爾半波帶(Fresnel half-wave band, FHWB)設計的改良,使得量測效果更佳。目前量測結果使用FHWB電極設計作改良之換能器在10mm的傳遞距離下其能量增益提升約5dB,並由實驗結果可明顯看出無論在軸向(傳遞方向)以及其垂直平面上皆有聚焦的效應產生。而後端電路輸出方面目前可獲得大於15mW的能量輸出,且利用蕭特基二極體的橋式電路並搭配適當的負載電阻,能將整流電路的能量損失減少至1.6mW以下。 | zh-TW |
dc.description.abstract | In recent years, there are many works focus on the improvement of the Biological technology. Furthermore, the integration of MEMS and Biological technology get more and more attentions in many research laboratories. Nowadays the implant biochips or medical facilities in micro scale are driven by batteries, which are not suitable for long-time use. In this study, the author constructs a piezoelectric ultrasonic power transmission system which can transmit power through the human body, the improvement can not only provide the power for long-time use but also for real-time use to many sensors. In this study, the author begins on clarifying the piezoelectric system and then integrated with the transmission theory for the ultrasonic power. PZT is chosen as the piezoelectric layer due to its high piezoelectric coefficient (d33), and agar plays the role of the human body. Fresnel half-wave band (FHWB) is introduced to be an improvement method for the power transmission efficiency, and there is a 5dB improvement observed from the modified design. A rectifier circuit makes the output power much useful, and the energy loss is less than 1.6mW for the circuit by using optimal load resistance. | en |
dc.format.extent | 1282247 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh | en |
dc.language.iso | en_US | - |
dc.subject | 超聲波 | zh |
dc.subject | 壓電換能器 | zh |
dc.subject | PZT | zh |
dc.subject | FHWB | zh |
dc.subject | 蕭特基二極體 | zh |
dc.subject | Ultrasonic | en |
dc.subject | Piezoelectric transducer | en |
dc.subject | FHWB. | en |
dc.title | 利用菲涅爾透鏡設計提升植入式壓電超聲波能量傳輸器效率之研究 | zh-TW |
dc.title | Transmission efficiency enhancement by Fresnel lens design for an implanted piezoelectric ultrasonic power transmitter | en |
dc.type | thesis | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/252479/1/ntu-99-R97543007-1.pdf | - |
item.fulltext | with fulltext | - |
item.openairetype | thesis | - |
item.languageiso639-1 | en_US | - |
item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
顯示於: | 工程科學及海洋工程學系
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