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    Infrared intrusion detector
    61.
    发明授权
    Infrared intrusion detector 失效
    红外入侵检测器

    公开(公告)号：US4709152A

    公开(公告)日：1987-11-24

    申请号：US818491

    申请日：1986-01-13

    申请人： Kurt Muller ,  Peter Gruber ,  Alfred Wuthrich

    发明人： Kurt Muller ,  Peter Gruber ,  Alfred Wuthrich

    IPC分类号： G01J1/02 ,  G01V8/14 ,  G08B13/18 ,  G08B13/193 ,  G01J5/08

    CPC分类号： G08B13/193 ,  Y10S250/01

    摘要： An infrared intrusion detector having a predetermined number of rows of radiation reception zones comprises a primary reflector and a secondary reflector for each row of radiation reception zones. The primary reflectors and their associated secondary reflectors form a folded radiation path. The folded radiation path allows for compact construction and simple manufacturing of the infrared intrusion detector. One reflector of each radiation reception zone forms together with the infrared sensor a compact structural unit. The other reflectors of each radiation reception zone are combined to form a further structural unit which is arranged in a predetermined spaced relationship to the first compact structural unit. In order to achieve uniform detection sensitivity in radiation reception zones having different angles of inclination to the horizontal plane, a larger focal length is chosen for radiation reception zones with smaller angles of inclination and longer range. Likewise, to achieve uniform detection sensitivity even with oblique infrared radiation impingement, the surface area of the primary reflectors increases within each horizontal row from the middle to the sides.

    摘要翻译： 具有预定数量的辐射接收区行的红外入侵检测器包括用于每排辐射接收区的主反射器和次反射器。 主反射器及其相关的次级反射器形成折叠的辐射路径。 折叠的辐射路径允许紧凑的结构和简单的红外入侵检测器的制造。 每个辐射接收区的一个反射器与红外传感器一起形成紧凑的结构单元。 每个辐射接收区的其他反射器被组合以形成另外的结构单元，该结构单元以与第一紧凑结构单元预定间隔的关系布置。 为了在具有与水平面不同的倾斜角的辐射接收区域中实现均匀的检测灵敏度，对于具有较小倾角和较大范围的辐射接收区域选择较大的焦距。 同样地，为了即使在倾斜的红外辐射冲击下也能实现均匀的检测灵敏度，主反射器的表面积从中间到侧面在每个水平排中增加。