公开(公告)号：US20020148986A1

公开(公告)日：2002-10-17

申请号：US09835755

申请日：2001-04-16

申请人： Valeo Electrical Systems, Inc.

发明人： Peter A. Hochstein

IPC分类号： G01N021/00

CPC分类号： B60S1/0822 ,  B60S1/0844 ,  G06K9/00791

摘要： A method and assembly for sensing moisture on the exterior surface of a sheet of glass (16) by capturing an ambient image (A) of light rays passing through the glass (16) from the exterior to the interior surfaces thereof under ambient light conditions. The invention is characterized by illuminating (18) the glass with pulses of light rays, capturing an illuminated image of the glass containing the ambient image (A) plus the illuminated image (B) containing the reflected light from the illuminating (18) of the glass (16) between the ambient images (A), and subtracting each ambient image (A) from the next adjacent illuminated image (B) to produce a moisture signal (30).

摘要翻译： 一种用于通过在环境光条件下从外部到内表面捕获穿过玻璃（16）的光线的环境图像（A）来感测玻璃板（16）的外表面上的水分的方法和组件。 本发明的特征在于用玻璃脉冲的光线照射（18）玻璃，捕获包含环境图像（A）的玻璃的照明图像加上包含来自照相机（18）的反射光的照射图像（B） 环境图像（A）之间的玻璃（16），以及从下一相邻照明图像（B）减去每个环境图像（A）以产生湿度信号（30）。

公开(公告)号：US20030001121A1

公开(公告)日：2003-01-02

申请号：US09894557

申请日：2001-06-28

申请人： VALEO ELECTRICAL SYSTEMS, INC.

发明人： Peter A. Hochstein

IPC分类号： G01N021/00

CPC分类号： B60S1/0844 ,  B60S1/0822 ,  G06K9/00791

摘要： A plurality of the first L1 and second L2 image sensor elements are interleaved with one another. The first image sensor element L1 has a peak response at the first wavelength null1 for capturing an illuminated image of the glass and objects on the glass containing a first wavelength null1 from an infrared illuminator (12). The second image sensor element L2 has a peak response at a second wavelength null2 for capturing an ambient image of light rays at the second wavelength null2 passing through the glass (10) from the exterior to the interior surfaces simultaneously with the capture by the first image sensor element L1. Instead of storing two complete sequential images and differentially subtracting them, the present invention creates two simultaneous images from a specially interleaved, single imager (14). A processor includes a camera control and frame capture unit (20), an image detector (22), an image storage unit (24), and a differential comparator (26). The comparator (26) algebraically sums the first and second images and an analyzer (28) analyzes and sets preset setpoints for initiating a wiper activation signal (30).

摘要翻译： 多个第一L1和第二L2图像传感器元件彼此交错。 第一图像传感器元件L1具有在第一波长lambd1处的峰值响应，用于捕获玻璃的照明图像和玻璃上包含来自红外照明器（12）的第一波长lambd1的玻璃上的物体。 第二图像传感器元件L2具有在第二波长lambd2处的峰值响应，用于捕获通过玻璃（10）从外部到内部表面的第二波长lambd2的光线的环境图像，同时由第一图像捕获 传感器元件L1。 代替存储两个完整的顺序图像并差分地减去它们，本发明从特别交错的单个成像器（14）创建两个同时的图像。 处理器包括相机控制和帧捕获单元（20），图像检测器（22），图像存储单元（24）和差分比较器（26）。 比较器（26）代数地对第一和第二图像求和，并且分析器（28）分析和设置用于启动刮水器激活信号（30）的预设设定点。

公开(公告)号：US20020148987A1

公开(公告)日：2002-10-17

申请号：US09835913

申请日：2001-04-16

申请人： Valeo Electrical Systems, Inc.

发明人： Peter A. Hochstein

IPC分类号： G01N015/06 ,  G01N021/49

CPC分类号： B60S1/0822 ,  B60S1/0833 ,  B60S1/0844 ,  G06K9/00791

摘要： A method and assembly for sensing moisture on the exterior surface of a sheet of glass (14) comprising the steps of emitting light rays from an illuminator (12) on an illuminator axis (I) intersecting the glass (14) at an illuminator angle of incidence Inull to reflect the light rays on a reflection axis (R) at an angle (Rnull) of reflection to the glass (14) and capturing on an imaging axis (C) the reflected light rays including reflections of moisture (19) on the exterior surface of the glass (14). The method is characterized by isolating the reflection of moisture (19) from the direct reflection of the illuminator (12) to prevent the capture of the direct reflection of the illuminator (12). This can be accomplished by offsetting the imaging axis (C) from the reflection axis (R), or by stopping the direct reflection of the illuminator (12) from being captured, as with a beam stop (24).

摘要翻译： 一种用于感测玻璃板（14）的外表面上的水分的方法和组件，包括以下步骤：在与所述玻璃（14）相交的照明器轴线（I）处的照明器（12）处以照射器角度 将反射轴（R）的反射轴（R）反射到玻璃（14）的角度（Rθ）并且在成像轴（C）上捕获包含水分（19）的反射光的反射光线 玻璃（14）的外表面。 该方法的特征在于隔离水分（19）与照射器（12）的直接反射的反射，以防止捕获照射器（12）的直接反射。 这可以通过将成像轴线（C）从反射轴线（R）偏移，或者通过停止照射器（12）的直接反射而被捕获来实现，如同光束停止器（24）一样。

公开(公告)号：US20010042822A1

公开(公告)日：2001-11-22

申请号：US09894340

申请日：2001-06-28

申请人： VALEO ELECTRICAL SYSTEMS, INC.

发明人： Peter A. Hochstein

IPC分类号： G02B006/42

CPC分类号： B60S1/0822 ,  B60S1/0837 ,  B60S1/0844 ,  G06K9/00791 ,  H04N13/218 ,  H04N13/239 ,  H04N2013/0081

摘要： Two embodiments include a first image sensor (14, 114) for sensing a first image of the exterior surface of the glass (12) along a first optical axis A and a second image sensor (16, 116) for sensing a second image of the exterior surface of the glass (12) along a second optical axis B which intersects the first optical axis A at an intersection X disposed adjacent the exterior surface of the glass (12). Both embodiments include an image correlator (22) for correlating the first and second images and producing an activation signal (24) in response to coincidence of moisture (10) in the respective correlated first and second images. The rain sensor accurately interprets images of moisture that lie in a narrow measurement zone adjacent the exterior surface of the windshield while disregarding images of objects that lie outside that zone.

摘要翻译： 两个实施例包括用于感测玻璃（12）的外表面的第一图像沿着第一光轴A的第一图像传感器（14,114）和用于感测第二图像的第二图像传感器（16,116） 沿着第二光轴B的玻璃（12）的外表面，该第二光轴B在与玻璃（12）的外表面相邻设置的交点X与第一光轴A相交。 两个实施例包括一个图像相关器（22），用于响应于相关的第一和第二图像中的水分（10）的一致性，使第一和第二图像相关并产生激活信号（24）。 雨量传感器准确地解读位于挡风玻璃外表面附近的狭窄测量区域内的水分图像，同时忽略位于该区域外的物体的图像。