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    • 6. 发明授权
    • Device for detecting surface wetness
    • 用于检测表面湿度的装置
    • US06369378B1
    • 2002-04-09
    • US09445045
    • 1999-12-01
    • Hubert LammHans MeierWolfgang HermannHenry BlitzkeGuenter Haderer
    • Hubert LammHans MeierWolfgang HermannHenry BlitzkeGuenter Haderer
    • G02B642
    • B60S1/0818B60S1/0833
    • The device for the detection of a wetting of a pane of glass, has an optical rain sensor which detects extraneous light and evaluates it for purposes of day-night detection. The amount of light striking the receiver (14) is integrated in an integration stage (16) and supplied to a comparator stage (20). The total light quantity formed by the light of a transmitter (12) and extraneous light and the extraneous light quantity detected when the transmitter (12) is switched off are measured in separate time intervals (Tg, Tf, Tf′). The time interval (Tf, Tf′) utilized for measurement of the extraneous light quantity is to be extended after a predeterminable number of measurement cycles (M) or after a predeterminable time period and/or the threshold (S2) is to be lowered for day-night detection.
    • 用于检测玻璃板润湿的装置具有光学雨传感器,其检测外来光并评估其用于昼夜检测的目的。 接收器(14)的光量集成在积分级(16)中并提供给比较器级(20)。 由发射器(12)的光和外部光形成的总光量和当发射器(12)关闭时检测到的外来光量以分开的时间间隔(Tg,Tf,Tf')被测量。 用于测量外部光量的时间间隔(Tf,Tf')在可预定数量的测量周期(M)之后或在可预定的时间段之后或/或阈值(S2)降低之后延长 昼夜检测。
    • 7. 发明授权
    • Method and device for operating a position sensor
    • 用于操作位置传感器的方法和装置
    • US6104185A
    • 2000-08-15
    • US072940
    • 1998-05-05
    • Hubert LammGuenter Haderer
    • Hubert LammGuenter Haderer
    • G01D5/244G01P3/487G01B7/14
    • G01P3/487
    • A method and a device for operating a position sensor made of at least two parts that move in relation to one another. The first part of the position sensor has at least two sections magnetized in different directions, and the second part has at least one magnetic field sensor which detects the magnetic field of the first part and converts it into signals having two levels depending on the polarity of the component of the magnetic field in a predefined spatial direction. The levels are supplied to a signal-processing arrangement which evaluates them to determine the relative position of the first part in relation to the second part. Prior to disabling the at least one magnetic field sensor when the first part is at a standstill with respect to the second part, the level delivered by the magnetic field sensor is stored, detected again after the magnetic sensor is enabled again, compared with the stored level, and if the measured level does not coincide with the stored level, the level change is evaluated as a valid level change.
    • 一种用于操作由相对于彼此移动的至少两个部分构成的位置传感器的方法和装置。 位置传感器的第一部分具有沿不同方向磁化的至少两个部分,并且第二部分具有至少一个磁场传感器,该磁场传感器检测第一部分的磁场,并将其转换成具有两个等级的信号,这取决于 在预定的空间方向上的磁场的分量。 电平被提供给信号处理装置,该信号处理装置评估它们以确定第一部分相对于第二部分的相对位置。 在第一部分相对于第二部分处于静止状态之前禁用至少一个磁场传感器之前,与存储的磁场传感器相比,由磁场传感器传送的电平被存储,再次检测到磁性传感器再次启用 电平,如果测量电平与存储电平不一致,则电平变化被评估为有效电平变化。