Design of a power meter for use with ultrasound transducers
碩士 === 義守大學 === 生物醫學工程學系 === 107 === Improper ultrasound propagation produces reflection waves. When the impedance at signal source is not the same as the impedance at the load side it will produce reflection waves. The smaller the reflection wave, the more ultrasound power tissues or cells rece...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | en_US |
Published: |
2019
|
Online Access: | http://ndltd.ncl.edu.tw/handle/y429jx |
id |
ndltd-TW-107ISU05114003 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-107ISU051140032019-09-26T03:28:23Z http://ndltd.ncl.edu.tw/handle/y429jx Design of a power meter for use with ultrasound transducers 超音波換能器功率計系統設計 Yi-Chang Wu 吳益彰 碩士 義守大學 生物醫學工程學系 107 Improper ultrasound propagation produces reflection waves. When the impedance at signal source is not the same as the impedance at the load side it will produce reflection waves. The smaller the reflection wave, the more ultrasound power tissues or cells receive during ultrasound treatment. The initial version of the power meter uses the MAX2016 IC as the main power sensor, this IC input range is for high frequencies. After testing its function and accuracy, we performed a series of experiments as shown in the results. The target of this study is to design a power meter for use in low frequency ultrasound stimulation of cells and tissues. The ultrasound signal has low frequency which is around 28 kHz, so we select the HMC612 IC to design another power meter for low frequency. The designed power meter contains a PCB and a bi-directional coupler, the MAX2016 and HMC612 IC can detect the forward and reverse signals during ultrasound treatment. Knowing the exact values of the forward and reverse signals allows for adjustment so that reflections can be minimized. Finally, a commercial ultrasound power meter was compared with the MAX2016 and HMC612 based power meters to confirm that they have similar characteristic. The system was also connected to an Arduino board so that the user can read the power values on an LCD display. Ioannis MANOUSAKAS 馬亞尼 2019 學位論文 ; thesis 67 en_US |
collection |
NDLTD |
language |
en_US |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 義守大學 === 生物醫學工程學系 === 107 === Improper ultrasound propagation produces reflection waves. When the impedance at signal source is not the same as the impedance at the load side it will produce reflection waves.
The smaller the reflection wave, the more ultrasound power tissues or cells receive during ultrasound treatment.
The initial version of the power meter uses the MAX2016 IC as the main power sensor, this IC input range is for high frequencies. After testing its function and accuracy, we performed a series of experiments as shown in the results.
The target of this study is to design a power meter for use in low frequency ultrasound stimulation of cells and tissues. The ultrasound signal has low frequency which is around 28 kHz, so we select the HMC612 IC to design another power meter for low frequency.
The designed power meter contains a PCB and a bi-directional coupler, the MAX2016 and HMC612 IC can detect the forward and reverse signals during ultrasound treatment. Knowing the exact values of the forward and reverse signals allows for adjustment so that reflections can be minimized.
Finally, a commercial ultrasound power meter was compared with the MAX2016 and HMC612 based power meters to confirm that they have similar characteristic. The system was also connected to an Arduino board so that the user can read the power values on an LCD display.
|
author2 |
Ioannis MANOUSAKAS |
author_facet |
Ioannis MANOUSAKAS Yi-Chang Wu 吳益彰 |
author |
Yi-Chang Wu 吳益彰 |
spellingShingle |
Yi-Chang Wu 吳益彰 Design of a power meter for use with ultrasound transducers |
author_sort |
Yi-Chang Wu |
title |
Design of a power meter for use with ultrasound transducers |
title_short |
Design of a power meter for use with ultrasound transducers |
title_full |
Design of a power meter for use with ultrasound transducers |
title_fullStr |
Design of a power meter for use with ultrasound transducers |
title_full_unstemmed |
Design of a power meter for use with ultrasound transducers |
title_sort |
design of a power meter for use with ultrasound transducers |
publishDate |
2019 |
url |
http://ndltd.ncl.edu.tw/handle/y429jx |
work_keys_str_mv |
AT yichangwu designofapowermeterforusewithultrasoundtransducers AT wúyìzhāng designofapowermeterforusewithultrasoundtransducers AT yichangwu chāoyīnbōhuànnéngqìgōnglǜjìxìtǒngshèjì AT wúyìzhāng chāoyīnbōhuànnéngqìgōnglǜjìxìtǒngshèjì |
_version_ |
1719258210739683328 |