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Convection-Based Tilt Sensor with Minimized Temperature Fluctuation

机译：基于对流的倾斜传感器，温度波动最小

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摘要

This paper presents a simple and novel method for minimizing the performance dependence of a convection-based tilt sensor on environmental temperature fluctuation. Previously reported convective tilt sensors show considerable fluctuation in output voltage because of various external thermal effects. Therefore, it is necessary to have a complex circuit to compensate the external temperature fluctuation or an additional cautious package to reduce the thermal effect. In this paper, a convective tilt sensor that inhibits the environmental thermal effect without an additional circuit or package is discussed. An integrated thin-film-based thermoelectric device is utilized not only for heating an encapsulated air medium with a symmetric temperature profile when it is balanced, but also for minimizing external thermal effects. The hot junction of the thermoelectric device operates as a heater and the cold one keeps the temperature difference between two junctions constant regardless of the external thermal environment. The proposed tilt sensor showed a fairly linear output voltage within the inclination range of ±90° on two axes and even exhibited a consistent output voltage under various external temperature conditions. The fluctuation rate of the proposed tilt sensor was kept within less than 2% of the output voltage; this was even the case for a temperature range of 25 to 60 ℃.
机译：本文提出了一种简单而新颖的方法，以最小化对流式倾斜传感器对环境温度波动的性能依赖性。先前报道的对流倾斜传感器由于各种外部热效应而显示出输出电压的明显波动。因此，需要具有复杂的电路来补偿外部温度波动，或者需要额外的谨慎封装以减小热效应。本文讨论了一种对流倾斜传感器，它无需额外的电路或封装即可抑制环境热效应。集成的基于薄膜的热电装置不仅用于在平衡时以对称的温度分布加热封装的空气介质，而且还用于最小化外部热效应。热电设备的热结点用作加热器，而冷结点则使两个结点之间的温差保持恒定，而不管外部热环境如何。所提出的倾斜传感器在两个轴的±90°倾斜范围内显示出相当线性的输出电压，甚至在各种外部温度条件下也显示出一致的输出电压。建议的倾斜传感器的波动率保持在输出电压的2％以内；甚至在25至60℃的温度范围内也是如此。

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  • 来源
    《Japanese journal of applied physics》 |2011年第6issue2期|p.06GM13.1-06GM13.4|共4页
  • 作者

    Ju Chan Choi; Seong Ho Kong;

  • 作者单位

    School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu 702-701, Korea;

    School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu 702-701, Korea;

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