公开(公告)号：US4871917A

公开(公告)日：1989-10-03

申请号：US183706

申请日：1988-04-19

申请人： Desmond J. O'Farrell ,  Kenneth Schofield ,  Mark L. Larson ,  Karl-Heinz Hanft ,  Kenneth L. Schierbeek ,  Richard D. Bentley

发明人： Desmond J. O'Farrell ,  Kenneth Schofield ,  Mark L. Larson ,  Karl-Heinz Hanft ,  Kenneth L. Schierbeek ,  Richard D. Bentley

IPC分类号： B60S1/08 ,  G01N21/43

CPC分类号： G01N21/43 ,  B60S1/0822 ,  B60S1/0833 ,  B60S1/0885 ,  B60S1/0888 ,  G01N2021/435 ,  G01N2201/0813 ,  Y10S15/15

摘要： A moisture sensing assembly for controlling vehicle accessories such as windshield wipers is mounted on the inner surface of a vehicle window or windshield for detecting moisture on the outer window surface. A plurality of infrared energy emitting diodes and a sensor for receiving reflected infrared energy from the window and any moisture thereon are mounted at predetermined angles and spacing in a support. The support is biased against the window and enclosed in a protective housing detachably mounted to a window mounted plate preferably adjacent a rearview mirror on the front windshield. The support preferably includes an infrared energy monitoring sensor adjacent the emitting diodes which may be combined with or separate from an ambient infrared energy sensor. The monitoring and ambient sensors provide reference energy levels allowing compensation for varying diode output due to temperature and age and varying external vehicle light conditions.

摘要翻译： 用于控制诸如挡风玻璃刮水器的车辆附件的湿度感测组件安装在车窗或挡风玻璃的内表面上，用于检测外窗表面上的湿气。 多个红外能量发射二极管和用于从窗口接收反射的红外能量和其上的任何水分的传感器以预定角度和间隔安装在支撑件中。 支撑件偏压在窗户上并且封闭在可拆卸地安装到窗户安装板上的保护壳体中，优选地与前挡风玻璃上的后视镜相邻。 该支撑件优选地包括与发射二极管相邻的红外能量监测传感器，其可与环境红外能量传感器组合或分离。 监控和环境传感器提供参考能量水平，可以补偿由于温度和年龄以及外部车辆光线条件变化引起的二极管输出变化。