FIEVel: a Fast and InExpensive Velocimeter based on an optical mouse sensor

IF 2.5 3区 工程技术 Q2 ENGINEERING, MECHANICAL
Robert Hunt, Eli Silver, Daniel M. Harris
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Abstract

Fluid velocimetry is fundamental to a breadth of applications spanning academia and industry; however, velocimetry at high temporal resolution is often prohibitively costly. Here, we introduce a Fast and InExpensive Velocimeter (FIEVel) based on an optical mouse sensor. At its core, the optical mouse sensor consists of a small pixel array that acquires image data at high rates, with onboard hardware to compute and output motion in two orthogonal axes directly. We adapt this widely available integrated circuit to image illuminated particles in the bulk of a fluid as in standard particle image velocimetry (PIV). We demonstrate that FIEVel is capable of resolving two components of pointwise velocity (0d2c) nonintrusively in the bulk of a flowing fluid at rates up to 6.4 kHz, at orders of magnitude lower cost than traditional velocimetry devices. We demonstrate and validate the velocimeter across a range of flows, operating conditions, and illumination strategies. As a sample application, we measure the temporal spectrum of a grid-generated turbulent flow and show excellent agreement with traditional particle image velocimetry using a high-speed camera.

FIEVel:一种基于光学鼠标传感器的快速廉价测速仪
流体测速是学术界和工业界广泛应用的基础;然而,高时间分辨率的测速技术往往成本高昂。本文介绍了一种基于光学鼠标传感器的快速廉价测速仪(FIEVel)。光学鼠标传感器的核心是一个小像素阵列,它以高速率获取图像数据,机载硬件可以直接计算和输出两个正交轴的运动。我们采用这种广泛使用的集成电路,像在标准粒子图像测速(PIV)中一样,对大块流体中的照射粒子进行成像。我们证明,FIEVel能够以高达6.4 kHz的速率在流动流体中无创地解析两个点向速度(0d2c)分量,其成本比传统测速设备低几个数量级。我们在一系列流量、操作条件和照明策略中演示和验证了测速仪。作为一个示例应用,我们测量了网格产生的湍流的时间谱,并显示了与使用高速相机的传统粒子图像测速的良好一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Experiments in Fluids
Experiments in Fluids 工程技术-工程:机械
CiteScore
5.10
自引率
12.50%
发文量
157
审稿时长
3.8 months
期刊介绍: Experiments in Fluids examines the advancement, extension, and improvement of new techniques of flow measurement. The journal also publishes contributions that employ existing experimental techniques to gain an understanding of the underlying flow physics in the areas of turbulence, aerodynamics, hydrodynamics, convective heat transfer, combustion, turbomachinery, multi-phase flows, and chemical, biological and geological flows. In addition, readers will find papers that report on investigations combining experimental and analytical/numerical approaches.
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