【求翻译】传感器、压力监测神马翻译的翻译

来源：蜘蛛抓取(WebSpider) 时间：2011-10-11 05:21 标签： 神马翻译
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压电传感器测定动脉脉搏波速度外文文献翻译.doc7页
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Piezoelectric sensor determination of arterial pulse wave
Arterial pulse wave velocity APWV is a measure of the elasticity or stiffness of peripheral arterial blood vessels The pulse referred to here will be the pressure pulse as opposed to the flow pulse measured by ultrasound Doppler
The pressure pulse velocity varies over the range from about 12 m s1 to
15 m s1 in stiff peripheral arteries whereas in normal arteries it has a velocity in the range of 7 to 9 m s1
The aim of this project was the development of a fast and easy to use system for the determination of peripheral arterial pulse wave velocity The principle of the PWV measurement is based on simultaneous measurement of two pulse waves at two different positions such as the radial artery at the wrist and the brachial artery just above the elbow By determining the pulse transit time between these points and the distance measured between the two locations pulse wave velocity may then be calculated The pressure pulse detection is done by using two piezoelectric sensors which generate a measurable voltage at the output contacts if they are mechanically deformed The deformation produced voltage is first amplified and filtered and then digitalized with a data acquisition card The analysis of the data obtained from the sensors includes a filtering process the calculation of the PWV with three different methods foot-to-foot cross-correlation and peak-to-peakand the determination of the arterial pulse rate
The sensor technique used in this work involves the piezoelectric effect in polyvinylidene fluoride PVDF which produces an output voltage in response to mechanical pressure on the material
Three methods of APWV determination are used foot-to-foot APWV peak-to-peak APWV and cross-correlation
APWV The FFAPWV and CCAPWV methods are less sensitive to pressure wave reflections at bifurcations etc in the arterial tree than the PPAPWV method Mean values and standard deviations we
正在加载中，请稍后...求翻译，传感器类的！谢谢了_百度知道
提问者采纳
2.1.2. 量热： 量热传感系统含有至少一个热传感器，根据流体的流动性，在发热元件顺流和逆流方向检测发热体周围的热剖面温度。由于可检测出流体流动的方向不同所形成的热流不对称性，此方法可进行与流量相对的速度测量（参见图2）。 举例来说，一个简易单维硅衬底量热传感器的温度模型为：（公式） heating element - 发热元件thermal profile - 热剖面fluid flow - 液/流体流动velocity measurement - 速度测量silicon substrate - 硅衬底、硅基 您好，原文翻译如上供参考，不明白可继续提问。若回答对您有所帮助，请点击本页面中的“选为满意回答”按钮。
还能帮我翻译么？还有8张图....
提问者评价
太感谢了，真心有用
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