智能化超声波液体流量计的设计_论文 关键词：超声波流量计，时差法，多普勒法，自动增益控制，公共通道 [gap=988]KEY WORDS: Utrasonic flowmeter,Time difference method,Doppler method,Agc,Public access
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implicit time-difference method 隐函时间差分法
travel time difference method 时差法
plicit time-difference method 隐函时间差分法
transit-time difference method 时差法
Trsansit-time difference method 传播时间差法
improved time difference method 改进时差法
quadratic time difference method 二次时差法
ultrasonic time difference method 超声波时差法
Exponential Time Difference Method 指数时间差分方法
The project utilized the travel time difference method to design and make thesmart water ultrasonic flowmeter which is a sub-project of Guanzhong irrigation areatransformation in Shaanxi province.
本课题是陕西省关中灌区改造（世行贷款）项目的一个子项目，经过充分 调研并查阅了大量的文献资料，以及对国内外各种流量计进行了分析对比，选 用时差法测量原理，研制具有国内外先进水平的智能化超声波水流量计。
参考来源 - 智能化超声波水流量计的硬件设计与制作Based on the above, an intelligent sensor is designed which combines tilt angle and wind speed measuring. The tilt angle is calculated from axial acceleration and wind speed is measured by ultrasonic travel time difference method.
本文以此为背景,设计了一种集倾角和风速测量于一体的智能传感器,通过测量轴向加速度计算倾斜角度,采用超声波传播时差法测量风速,并通过CAN总线将数据上传至机载主控制器。
参考来源 - 移动式起重机姿态安全传感器的设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
In this paper, the mudstone acoustic time difference method and the vitrinite reflectance method are used to calculate the Lower Cretaceous denuded thickness in the Santanghu basin.
文中利用泥岩声波时差和镜质体反射率法计算了三塘湖盆地下白垩统的剥蚀量，两种方法得出的结果吻合较好。
It is investigated using finite difference time domain method based on Drude model.
采用基于等离子体物理模型的时域有限差分法对其进行了研究。
The property of the near field subwavelength imaging in a metal thin-film structure is investigated using finite difference time domain method based on Drude model.
采用基于等离子体物理模型的时域有限差分方法模拟了金属薄膜近场成像特性；采用薄膜传输矩阵方法计算了金属薄膜对倏逝波分量的放大作用。
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