This paper presents a microprocessor-based, ultrasonic air temperature sensor system whose output controls temperature adjustment of car air conditioner (AC). Perceived thermal comfort correlates better with temperature of bulk air than temperature measured by conventional in-car temperature sensor. It uses ultrasonic measurement of changes in sound speed in air to determine temperature of bulk air. Changes in sound speed are calculated from phase shift of multi-frequency continuous wave. A 89c51 single-chip microprocessor-based signal generator and phase detector was used to record and calculate phase shift and temperature. Advantages of proposed system are high accuracy, instant detection, wider range and low cost.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Spontaneous and highly accurate ultrasonic temperature measurement system for air conditioner in automobiles


    Weitere Titelangaben:

    Schnelles und hochgenaues Temperaturmesssystem auf Ultraschallbasis für Kfz-Klimaanlagen


    Beteiligte:
    Zhan, Tung-Sheng (Autor:in) / Wu, Sun-Li (Autor:in) / Tsai, Wen-Yuan (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    8 Seiten, 10 Bilder, 16 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    A new ultrasonic temperature measurement system for air conditioners in automobiles

    Liao, T.L. / Tsai, W.Y. / Huang, C.F. | Tema Archiv | 2004


    Air conditioner control unit for automobiles

    KIM JAE GEUN | Europäisches Patentamt | 2024

    Freier Zugriff

    Novel efficient CN95 air conditioner filter for automobiles

    LI XIAOWU / CHEN FANG / ZHENG HANJUN | Europäisches Patentamt | 2020

    Freier Zugriff

    MANUFACTURING METHOD OF AIR CONDITIONER FILTERS FOR AUTOMOBILES

    LEE JUN YONG | Europäisches Patentamt | 2015

    Freier Zugriff

    Room temperature control system for automobiles

    AN WOONG JIN | Europäisches Patentamt | 2020

    Freier Zugriff