| 信号滤波和传感器特性对相关测速影响的研究 |
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| 引用本文： | 袁镇福,周洁,浦兴国,岑可法.信号滤波和传感器特性对相关测速影响的研究[J].仪器仪表学报,2001,22(1):78-80. |
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| 作者姓名： | 袁镇福 周洁 浦兴国 岑可法 |
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| 作者单位： | 浙江大学热能工程研究所 |
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| 基金项目： | 国家自然科学基金资助项目No.59576030。 |
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| 摘 要： | 本文介绍在测量管内流动的高温烟气流速的实验中采用FIR低通数字滤波器方法可以排除干扰信号的影响的研究，实验结果证明，经过滤 处理后的信号互相关函数的图形不会出现大小相当的多个峰值，符合理论分析的结果；其次，本文还介绍了用热电偶和压力传感器采集的烟气温度和压力脉动信号，分析了传感器特性对相关测速的适应性。
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| 关 键 词： | 相关测速 信号滤波 传感器特性 流速测量 |
| 修稿时间： | 1199年10月1日 |
Study of Effects of Digital Filtering and Sensor Characteristics on Velocity Measurement by Correlation Method |
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| Yuan Zhenfu,Zhou,Jie,Pu Xingguo,Cen Kefa.Study of Effects of Digital Filtering and Sensor Characteristics on Velocity Measurement by Correlation Method[J].Chinese Journal of Scientific Instrument,2001,22(1):78-80. |
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| Authors: | Yuan Zhenfu Zhou Jie Pu Xingguo Cen Kefa |
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| Abstract: | In this paper, the FIR low pass digital filtering method is first introduced for reducing the effects of noise signals in the experiment of velocity measurement of high temperature flue gas flowing in pipe. The experimental results indicated that, only one peak presents in the cross correlation graph, which is in good agreement with theoretical analysis result. Secondly, the temperature and pressure pulse signals of the high temperature flue gas, obtained by thermocouple and pressure sensor, are introduced to explain the applicability of sensor characteristics. |
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| Keywords: | Correlation measurement of velocity Signal filtering Sensor characteristics |
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