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用于测量非等温流速度的双丝传感器。

Two Wire Sensor for Measuring the Velocity of Non-Isothermal Flows.

机构信息

Strata Mechanics Research Institute, Polish Academy of Sciences, Reymonta 27, 30-059 Krakow, Poland.

出版信息

Sensors (Basel). 2021 Dec 27;22(1):162. doi: 10.3390/s22010162.

DOI:10.3390/s22010162
PMID:35009707
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8749586/
Abstract

Changes in the temperature of the medium significantly affect the static characteristics of hot-wire anemometry measuring wires, which causes errors in the results of flow velocity measurements. High temperatures of the medium make it necessary to additionally heat the sensor to even higher temperatures, which may lead to its damage due to wire burnout. The article proposes a solution to the problem of measuring the flow velocity in conditions of non-stationary temperatures with the use of the method of cross-correlation of signals from two-wire resistance thermometers. The main assumptions of the method and its experimental verification were presented.

摘要

介质温度的变化会显著影响热线风速仪测量线的静态特性，从而导致流速测量结果出现误差。介质的高温使得有必要将传感器进一步加热到更高的温度，这可能会导致由于电线烧断而损坏传感器。本文提出了一种使用两线电阻温度计信号互相关方法来解决非稳态温度条件下测量流速的问题。介绍了该方法的主要假设及其实验验证。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/ec482ad405b6/sensors-22-00162-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/9b6bf7330f32/sensors-22-00162-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/67430d05164c/sensors-22-00162-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/bbe0060c1516/sensors-22-00162-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/32923e53e1ec/sensors-22-00162-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/358b26000a78/sensors-22-00162-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/8f608e1dcb2f/sensors-22-00162-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/8263a0e653b0/sensors-22-00162-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/b9943b6083c6/sensors-22-00162-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/ec482ad405b6/sensors-22-00162-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/9b6bf7330f32/sensors-22-00162-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/67430d05164c/sensors-22-00162-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/bbe0060c1516/sensors-22-00162-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/32923e53e1ec/sensors-22-00162-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/358b26000a78/sensors-22-00162-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/8f608e1dcb2f/sensors-22-00162-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/8263a0e653b0/sensors-22-00162-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/b9943b6083c6/sensors-22-00162-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/62b9/8749586/ec482ad405b6/sensors-22-00162-g009.jpg

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本文引用的文献

1
A Semi-Empirical Approach to Gas Flow Velocity Measurement by Means of the Thermal Time-of-Flight Method.一种基于热飞行时间法测量气体流速的半经验方法。
Sensors (Basel). 2021 Aug 24;21(17):5679. doi: 10.3390/s21175679.
2
Absolute measurement of low gas flow by means of the spectral analysis of the thermal wave.通过热波光谱分析对低气体流量进行绝对测量。
Rev Sci Instrum. 2013 Feb;84(2):025105. doi: 10.1063/1.4790410.