Apparatus and a method for estimating the air humidity within an oven cavity
    1.
    发明授权
    Apparatus and a method for estimating the air humidity within an oven cavity 失效
    用于估计烤箱腔内的空气湿度的装置和方法

    公开(公告)号:US08652552B2

    公开(公告)日:2014-02-18

    申请号:US13147435

    申请日:2010-02-18

    IPC分类号: G01N29/024 A23L1/01

    摘要: The present invention relates to an apparatus for estimating the air humidity within an oven cavity (14) by using ultrasound waves with at least two different frequencies (f1, f2). Said apparatus comprises at least one ultrasound transmitter (10) for generating the ultrasound waves, at least one ultrasound receiver (12) for receiving the ultrasound waves and at least one phase detecting device for detecting the phase (φ1, φ2) of the ultrasound wave at the ultrasound receiver (12) relative to the same ultrasound wave with the same frequency (f1, f2) at the ultrasound transmitter (10). Said apparatus comprises further at least one evaluation unit for calculating the velocity (V) of the ultrasound waves on the basis of the phases (φ1, φ2) and frequencies (f1, f2) of the ultrasound waves with the two different frequencies (f1, f2), at least one temperature sensor (32) for detecting the temperature (T) in the oven cavity (14) and at least one estimation unit for estimating the humidity in the oven cavity (14) on the basis of the temperature (T) and the velocity (V) of the ultrasound waves. Further, the present invention relates to a corresponding method for estimating the air humidity within an oven cavity (14).

    摘要翻译: 本发明涉及一种用于通过使用具有至少两个不同频率(f1,f2)的超声波来估计烤箱腔(14)内的空气湿度的装置。 所述装置包括用于产生超声波的至少一个超声波发射器(10),用于接收超声波的至少一个超声波接收器(12)和用于检测超声波的相位(phi1,phi2)的至少一个相位检测装置 在超声波发射器(10)处相对于具有相同频率(f1,f2)的相同超声波在超声波接收器(12)处。 所述装置还包括至少一个评估单元,用于基于具有两个不同频率(f1,f2)的超声波的相位(phi1,phi2)和频率(f1,f2)计算超声波的速度(V) f2),用于检测烤箱腔(14)中的温度(T)的至少一个温度传感器(32)和用于基于温度(T)估计烤箱腔(14)中的湿度的至少一个估计单元 )和超声波的速度(V)。 此外,本发明涉及用于估计烤箱腔(14)内的空气湿度的相应方法。

    APPARATUS AND A METHOD FOR ESTIMATING THE AIR HUMIDITY WITHIN AN OVEN CAVITY
    2.
    发明申请
    APPARATUS AND A METHOD FOR ESTIMATING THE AIR HUMIDITY WITHIN AN OVEN CAVITY 失效
    装置和估算空气中的空气湿度的方法

    公开(公告)号:US20120225179A1

    公开(公告)日:2012-09-06

    申请号:US13147435

    申请日:2010-02-18

    IPC分类号: G01N29/02 A23L1/01

    摘要: The present invention relates to an apparatus for estimating the air humidity within an oven cavity (14) by using ultrasound waves with at least two different frequencies (f1, f2). Said apparatus comprises at least one ultrasound transmitter (10) for generating the ultrasound waves, at least one ultrasound receiver (12) for receiving the ultrasound waves and at least one phase detecting device for detecting the phase (φ1, φ2) of the ultrasound wave at the ultrasound receiver (12) relative to the same ultrasound wave with the same frequency (f1, f2) at the ultrasound transmitter (10). Said apparatus comprises further at least one evaluation unit for calculating the velocity (V) of the ultrasound waves on the basis of the phases (φ1, φ2) and frequencies (f1, f2) of the ultrasound waves with the two different frequencies (f1, f2), at least one temperature sensor (32) for detecting the temperature (T) in the oven cavity (14) and at least one estimation unit for estimating the humidity in the oven cavity (14) on the basis of the temperature (T) and the velocity (V) of the ultrasound waves. Further, the present invention relates to a corresponding method for estimating the air humidity within an oven cavity (14).

    摘要翻译: 本发明涉及一种用于通过使用具有至少两个不同频率(f1,f2)的超声波来估计烤箱腔(14)内的空气湿度的装置。 所述装置包括用于产生超声波的至少一个超声波发射器(10),用于接收超声波的至少一个超声波接收器(12)和用于检测相位的至少一个相位检测装置(&phgr; 超声波接收器(12)上的超声波相对于在超声波发射器(10)处具有相同频率(f1,f2)的相同超声波。 所述装置还包括至少一个评估单元,用于基于两个不同的超声波的相位(&phgr。1,&phgr。2)和频率(f1,f2)计算超声波的速度(V) 频率(f1,f2),用于检测烤箱腔(14)中的温度(T)的至少一个温度传感器(32)和至少一个估计单元,用于基于 超声波的温度(T)和速度(V)。 此外,本发明涉及用于估计烤箱腔(14)内的空气湿度的相应方法。