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首页> 外文期刊>Japanese journal of applied physics >Noncontact Measurement of Humidity and Temperature Using Airborne Ultrasound
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Noncontact Measurement of Humidity and Temperature Using Airborne Ultrasound

机译：使用机载超声进行非接触式湿度和温度测量

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摘要

We describe a noncontact method for measuring humidity and dry-bulb temperature. Conventional humidity sensors are single-point measurement devices, so that a noncontact method for measuring the relative humidity is required. Ultrasonic temperature sensors are noncontact measurement sensors. Because water vapor in the air increases sound velocity, conventional ultrasonic temperature sensors measure virtual temperature, which is higher than dry-bulb temperature. We performed experiments using an ultrasonic delay line, an atmospheric pressure sensor, and either a thermometer or a relative humidity sensor to confirm the validity of our measurement method at relative humidities of 30, 50, 75, and 100% and at temperatures of 283.15, 293.15, 308.15, and 323.15 K. The results show that the proposed method measures relative humidity with an error rate of less than 16.4% and dry-bulb temperature with an error of less than 0.7 K. Adaptations of the measurement method for use in air-conditioning control systems are discussed.
机译：我们描述了一种用于测量湿度和干球温度的非接触式方法。常规的湿度传感器是单点测量设备，因此需要用于测量相对湿度的非接触方法。超声波温度传感器是非接触式测量传感器。由于空气中的水蒸气会提高声速，因此传统的超声波温度传感器会测量虚拟温度，该温度高于干球温度。我们使用超声波延迟线，大气压传感器以及温度计或相对湿度传感器进行了实验，以确认我们的测量方法在30％，50％，75％和100％相对湿度以及283.15温度下的有效性， 293.15、308.15和323.15K。结果表明，该方法测量的相对湿度的误差率小于16.4％，干球温度的误差小于0.7K。适用于空气的测量方法讨论了空调控制系统。

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  • 来源
    《Japanese journal of applied physics》 |2010年第4issue1期|P.046601.1-046601.5|共5页
  • 作者

    Akihiko Kon; Koichi Mizutani; Naoto Wakatsuki;

  • 作者单位

    Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan Yamatake Corporation, 1-12-2 Kawana, Fuiisawa, Kanagawa 251-8522, Japan;

    rnGraduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan;

    rnGraduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan;

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