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標題Title: IMPLEMENTATION OF A PORTABLE ULTRASOUND DENSITOMETRY BASED ON FPGA
作者Authors: 陳培展,Jian-Xing Wu..等
上傳單位Department: 電機工程系
上傳時間Date: 2009-11-20
上傳者Author: 陳培展
審核單位Department: 電機工程系
審核老師Teacher: 陳培展
檔案類型Categories: 論文Thesis
關鍵詞Keyword: Power electronics、FPGA、LabVIEW
摘要Abstract: This work was major in utilizing the power electronics technology to build a high-voltage ultrasonic pulser (300 ~ 500 volts ) with high power factor(>0.9). Then the high-speed AD converters and the ultrasonic receiver were integrated with FPGA technology. Finally the transmitted or the echo ultrasound signal was designed to transfer to a notebook (NB) with USB port through the designed platform between the FPGA and the LabVIEW. In addition, the speed of sound (SOS) and the broadband ultrasound attenuation (BUA) could be measured on the LabVIEW environment. AS a result, the ultrasonic densitometry can estimate the characteristic of bone tissue based on transmitted or the echo signal with the portable system based on proposed FPGA technique.

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2009_11_5c72140e.doc 5590Kb doc 347 113
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