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精密超声波密度计研究
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Project supported by the Natural Science Foundation of Chongqing (Grant No. cstc2012jjA70004 and cstc2012jjA40062), the National Natural science Foundation of China (Grant No. 51275551), and the Graduate Innovation Fund of Chongqing University of Technology (Grant No. YCX2013206).


Study on the precision ultrasonic densimeter
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    摘要:

    针对传统的密度测量仪器存在的不足,根据超声波的传播特性设计了一种超声波密度计。通过超声波波速的测量来实现密度计的高精度测量。利用高分辨率、快速的信号采样电路以及数字细分算法使超声波传播时间的测量达到ns级,为密度测量的分辨率优于0.000 01×103kg/m3提供了保障。采用分布式多声道结构有利于密度测量精度的提高。

    Abstract:

    To settle some problems on the traditional density measurement instrument against actual application, a high precision ultrasonic densimeter is designed on the basis of the ultrasonic wave propagation characteristics. The high resolution and fast signal collection circuit and the digital subdivision algorithms which are used to make the measurement of the ultrasonic wave propagation time reach nanosecond and ensure the measurement resolution of the ultrasonic densimeter better than 0.000 01×103kg/m3. The distributed measuring probes are installed oppositely at the ektexine of the vessel which is contained the measured medium. The distributed structure design is helpful to improve the accuracy of the measurement result.

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张兴红,邱磊,陈鑫,何涛,刘淑香.精密超声波密度计研究[J].机床与液压,2014,42(24):42-46.
. Study on the precision ultrasonic densimeter[J]. Machine Tool & Hydraulics,2014,42(24):42-46

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  • 在线发布日期: 2015-06-17
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