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    Method for measurement of relative humidity, in particular in radiosenders, and humidity detectors that make use of the method
    4.
    发明公开
    Method for measurement of relative humidity, in particular in radiosenders, and humidity detectors that make use of the method 失效
    用于测量相对湿度，特别是用于无线电探空仪的方法和传感器

    公开(公告)号：EP0965837A1

    公开(公告)日：1999-12-22

    申请号：EP99109901.1

    申请日：1994-08-15

    申请人： VAISALA OYJ

    发明人： Antikainen, Veijo ,  Paukkunen, Ari ,  Storbom, Lars ,  Jauhiainen, Hannu ,  Ponkala, Jorma

    IPC分类号： G01N27/22

    CPC分类号： G01W1/08 ,  G01N27/225

    摘要： Method and detector for measurement of relative humidity by using a combination of capacitive humidity detectors (10 1 ,10 2 ;10P), in particular in radiosondes. In the detector, between the capacitor plates, a material (12) is used, the permittivity of which is a function of the amount of water absorbed by said material (12). In the method said detector (10) or combination of detectors is heated in order to remove any ice, frost or condensed humidity deposited on the face and/or in the environment of the detector. The detector capacitance (C M ) or a part (C 1 ...C N ) of same is heated, in time and/or in place, periodically by conducting an electric current (I) through one or several heating resistors (R), and the detecting of the detector capacitance (C M ) is carried out without measurement of the detector temperature after the detector capacitance or a part (C 1 ...C N ) of same has cooled down substantially to the temperature of the environment. In the method, two or more separate detectors (10 1 ,10 2 ) or a coupling of several component detectors (C 1 ...C N ) in parallel, or equivalent is employed. When several separate detectors (10 1 ,10 2 ) are used, each detector is heated in its turn, and the relative humidity is detected primarily on the basis of a detector (10 1 ,10 2 ) or its component detectors (C 1 ...C N ) that has/have cooled sufficiently after said heating.

    摘要翻译： 在无线电探空仪，在particulare;通过使用电容式湿度检测器的组合（10P 101102）方法和检测器，用于测量相对湿度。 在检测器中，电容器板之间的材料（12）时，所有的介电常数，其是水由所述材料（12）所吸收的量的函数。 在该方法中，所述检测器（10）或探测器的组合，以除去沉积在表面和/或在检测器的环境的任何冰，雾或冷凝的湿度下加热。 该检测器电容（CM）或部分（C1 ... CN）的同一被加热，在时间和/或在适当位置，由通过一个或几个加热电阻器（R），并且定期传导电流（I）的 检测所述检测器的电容（CM）被进行，而不在检测器电容或部分的相同的（C1 ... CN）之后的检测器测量温度基本上冷却到环境温度。 在该方法中，两个或更多个检测器（101,102）或几个部件检测器的耦合（C1 ... CN）平行分开，或等效采用。 当几个分开的检测器（101,102）被使用，每一个检测器被反过来加热，主要是检测到检测器（101,102）或它的成分的检测器（C1 ... CN）并具有的基础上的相对湿度/已经冷却 充分所述加热之后。