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Measuring Acoustic Wave Transit Time in Furnace Based on Active Acoustic Source Signal

Measuring Acoustic Wave Transit Time in Furnace Based on Active Acoustic Source Signal
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摘要 Accurate measurement of transit time for acoustic wave between two sensors installed on two sides of a furnace is a key to implementing the temperature field measurement technique based on acoustical method. A new method for measuring transit time of acoustic wave based on active acoustic source signal is proposed in this paper, which includes the followings: the time when the acoustic source signal arrives at the two sensors is measured first; then, the difference of two arriving time arguments is computed, thereby we get the transit time of the acoustic wave between two sensors installed on the two sides of the furnace. Avoiding the restriction on acoustic source signal and background noise, the new method can get the transit time of acoustic wave with higher precision and stronger ability of resisting noise interference. Accurate measurement of transit time for acoustic wave between two sensors installed on two sides of a furnace is a key to implementing the temperature field measurement technique based on acoustical method. A new method for measuring transit time of acoustic wave based on active acoustic source signal is proposed in this paper, which includes the followings: the time when the acoustic source signal arrives at the two sensors is measured first; then, the difference of two arriving time arguments is computed, thereby we get the transit time of the acoustic wave between two sensors installed on the two sides of the furnace. Avoiding the restriction on acoustic source signal and background noise, the new method can get the transit time of acoustic wave with higher precision and stronger ability of resisting noise interference.
出处 《International Journal of Automation and computing》 EI 2007年第1期52-55,共4页 国际自动化与计算杂志(英文版)
基金 This work was supported by the Project of Scientific Research of the Education Department of Liaoning Province,PRC(No.202023083).
关键词 Active acoustic source signal transit time cross correlation arrival time. Active acoustic source signal, transit time, cross correlation, arrival time.
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