DC 欄位 | 值 | 語言 |
dc.contributor | 臺灣大學: 應用力學研究所 | zh-TW |
dc.contributor | 張培仁 | zh |
dc.contributor.author | 江俊霖 | zh-TW |
dc.contributor.author | Jiang, Jun-Lin | en |
dc.creator | 江俊霖 | zh-TW |
dc.creator | Jiang, Jun-Lin | en |
dc.date | 2012 | en |
dc.date.accessioned | 2013-03-21T08:04:58Z | - |
dc.date.accessioned | 2018-06-29T00:23:23Z | - |
dc.date.available | 2013-03-21T08:04:58Z | - |
dc.date.available | 2018-06-29T00:23:23Z | - |
dc.date.issued | 2012 | - |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/249766 | - |
dc.description.abstract | 近年來微機電與生物感測系統的持續發展與進步,許多生物感測晶片系統已微小到可植入人體體內並達到可即時監測病患之生理狀態。目前提供感測系統電力的方法有植入不可充電的電池以及無線能量傳輸兩種,然而植入電池無法長時間使用以及有更換不易的缺失,因此研究中採用無線能量傳輸來提供感測系統做長期監測所需之能量。
本論文利用超聲波做能量傳輸之概念,以壓電換能器為主體,將超聲波打入體內,並再由體內壓電換能器轉為電能,供給體內生物感測晶片所需能量。為了能夠將壓電換能器之接收端植入體內,研究中利用人體生物相容性材料-PDMS將接收端封裝,並且比較圓型、方型以及菲涅爾設計的封裝外形對能量傳輸效率之影響。使用去離子水做為傳遞介質之實驗結果顯示,菲涅爾設計的能量傳輸效率比圓型以及方型設計的要高,當輸入693.7毫瓦的輸入功率時,菲涅爾的平均交流輸出功率為57.15毫瓦,比圓型的32.55毫瓦以及方型的19.7毫瓦皆來的大,傳輸的效率由-13.28dB(圓型)以及-15.46dB(方型)提升至-10.84dB(菲涅爾),其結果顯示使用菲涅爾設計對於體內能量傳輸是最好的選擇。為了得到較穩定的直流功率輸出,將接收端連接倍壓整流電路並置於遠場量測,探討在不同負載下的功率輸出。結果顯示當使用5.1k歐姆的電阻時,會有24.4毫瓦的能量輸出,其傳輸效率大約為-14.5dB。本論文以PDMS封裝壓電換能器與整流電路之模組提供了可直接被生物感測晶片利用的能量。 | zh-TW |
dc.description.abstract | In recent years, according to there are many works focus on biosensing systems and micro-electro-mechanical system, the size of bio-sensor has been decreased enough to implant into human body and achieved real-time medical monitoring. There are two ways of power provide: implanted non-rechargeable batteries and wireless power transfer. However, the implanted battery can’t be prolonged use and the lack of replacement is not easy, this research use of wireless power transmission to provide a sensing system to do for long-term monitoring of energy.
This study use ultrasound to do the concept of power transfer, using piezoelectric transducer exciting the ultrasound into the body and transfer it to electrical energy for the biosensing. Using biocompatible material PDMS to package transducer for implanted into body. Compare the efficiency of different package shapes : spherical, cubic and fresnel for the power transmission. From the experiments, we can find the energy generation by Fresnel packaged is all bigger than the spherical and cubic. While input power is 693.7mW, the average output power of Fresnel is 57.15mW which is larger than spherical as 32.55mW and cubic as 19.7mW. The efficiency of transmission promotes significantly from -13.28dB (spherical) and -15.46dB (cubic) to -10.84dB (Fresnel). According to above results, we concluded the Fresnel shape of packaged receiver is the best for power transmission in human body. Besides, we combine the receiver with voltage double-rectifier. In order to obtain the stable DC output power, the receiver is considered at far field and it is observed the DC power under variable resistance. The experiment results show that the maximum DC power is 24.4mW with 5.1k | en |
dc.format.extent | 2568696 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh | en |
dc.language.iso | en_US | - |
dc.subject | 壓電超聲波能量傳輸 | zh |
dc.subject | PDMS | zh |
dc.subject | 聲波傳遞 | zh |
dc.subject | piezoelectric ultrasonic power transmission | en |
dc.subject | acoustic transmission | en |
dc.title | 體內壓電超聲波能量傳輸之研究 | zh-TW |
dc.title | Piezoelectric Ultrasound Power Transmitter for Biomedical Body | en |
dc.type | thesis | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/249766/1/ntu-101-R99543051-1.pdf | - |
item.openairetype | thesis | - |
item.fulltext | with fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en_US | - |
item.cerifentitytype | Publications | - |
顯示於: | 應用力學研究所
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