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A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

机译：低成本石英加速度计的温度补偿模型及其在倾斜传感中的应用

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摘要

Although the quartz accelerometer has made great advances, the performance, in some specific applications such as tilt sensing, needs to be well compensated in high temperature environment. Based on the high temperature testing of low cost quartz accelerometers, we found that the normalized positive and negative parts are asymmetrical at high temperature and the temperature curve of zero sensor output is related to the roll angle of the sensor. Traditional temperature compensation method only considers the temperature factor and ignores the roll sensitivity, which leads to deteriorated accuracy. To solve this problem, this paper proposes a novel and simple mathematical model to obtain a more accurate expression of zero sensor output, which makes the sensor output more robust at high temperature. Experimental results on two low cost quartz accelerometers demonstrate that the proposed model is feasible and effective, which could reduce the temperature drift error of the sensor output typically from 0.01 g to 0.001 g. Furthermore, we introduce the compensated sensors in the three-axis inclinometer system for tilt sensing, and the evaluation results show that the temperature drift error of the inclination in the range (20 degrees C, 150 degrees C) is reduced typically from 0.4 degrees to 0.1 degrees compared to the traditional method.
机译：尽管石英加速度计取得了长足的进步，但是在某些特定应用（例如倾斜感应）中的性能需要在高温环境中得到很好的补偿。基于低成本石英加速度计的高温测试，我们发现归一化的正负部分在高温下是不对称的，零传感器输出的温度曲线与传感器的侧倾角有关。传统的温度补偿方法仅考虑温度因素而忽略了侧倾灵敏度，从而导致精度下降。为了解决这个问题，本文提出了一种新颖而简单的数学模型来获得更精确的零传感器输出表达式，这使得传感器在高温下的输出更加鲁棒。在两个低成本石英加速度计上的实验结果表明，该模型是可行且有效的，可以将传感器输出的温度漂移误差通常从0.01 g降低至0.001 g。此外，我们在三轴测斜仪系统中引入了用于倾斜感测的补偿传感器，评估结果表明，倾斜范围（20摄氏度，150摄氏度）的温度漂移误差通常从0.4度降低到与传统方法相比为0.1度。

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  • 来源
    《Mathematical Problems in Engineering》 |2016年第9期|2950376.1-2950376.10|共10页
  • 作者

    Yang Weibin; Fang Bin; Tang Yuan Yan; Qin Xudong;

  • 作者单位

    Chongqing Univ, Coll Automat, Chongqing 400044, Peoples R China;

    Chongqing Univ, Coll Comp Sci, Chongqing 400044, Peoples R China;

    Univ Macau, Dept Comp & Informat Sci, Macau, Peoples R China;

    Zhengzhou Horizon Elect Sci & Technol Co Ltd, Zhengzhou 450000, Peoples R China;

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