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    • 5. 发明公开
    • OBSTRUCTION DETECTION DEVICE
    • 检测装置
    • EP1984904A1
    • 2008-10-29
    • EP06708027.5
    • 2006-02-06
    • ROBERT BOSCH GMBH
    • RICHARD, Matthieu
    • G08B29/04
    • G08B29/26G08B29/046
    • The invention provides an obstruction detection device. It comprises a light guide having at least one groove formed into one of the light-guiding surfaces of the light guide. A light emitter is provided for emitting light into the light guide, and at least one light detector is provided for detecting the intensity of light transmitted through the light guide and/or which is reflected by at least one groove inside the light guide. Further, the obstruction detection device comprises an output device for outputting an alarm signal when an absolute difference between the intensity and a reference value exceeds a threshold value.
    • 本发明提供一种障碍物检测装置。 它包括具有形成在光导的一个光导表面中的至少一个凹槽的光导。 光发射器被提供用于将光发射到光导中,并且至少一个光检测器被提供用于检测透过光导的光的强度和/或被光导内的至少一个凹槽反射的光的强度。 此外,障碍物检测装置包括输出装置,用于当强度与参考值之间的绝对差值超过阈值时输出警报信号。
    • 7. 发明公开
    • INFRARED INTRUSION DETECTION DEVICE
    • 红外入侵检测装置
    • EP2002409A1
    • 2008-12-17
    • EP06708789.0
    • 2006-03-16
    • Robert Bosch GmbH
    • RICHARD, Matthieu
    • G08B13/19G08B29/04
    • G08B13/19G08B13/186G08B29/046
    • The invention relates to an infrared intrusion detection device. It comprises a housing 1, a window 2, which is arranged at a front side of the housing and which is transparent for at least infrared radiation emitted by an intruder, an infrared sensor arranged inside the housing for detecting the infrared radiation emitted by the intruder. Further it comprises a light guide 7, which is arranged inside the housing, which has at least one light entrance facet and which has a plurality of light exit facets 3 being arranged at the front side of the housing. A light emitter 6 is arranged inside the housing for injecting light into the at least one light entrance facet of the light guide. A light detector is provided for detecting light reflected back into the housing by an obstacle in the vincinity of the window. A signal processing unit is arranged for triggering an alarm, when an absolute difference of the intensity of back-reflected light to a predetermined value exceeds a threshold value.
    • 红外入侵检测装置本发明涉 它包括壳体1,布置在壳体的前侧并且至少对入侵者发射的红外辐射透明的窗口2,布置在壳体内用于检测入侵者发射的红外辐射的红外传感器 。 此外,它包括布置在壳体内的光导7,光导7具有至少一个光入射面并且具有布置在壳体前侧的多个光出射面3。 发光器6布置在壳体内用于将光注入到光导的至少一个光入射面中。 提供一个光检测器,用于检测由窗户正中的障碍物反射回到外壳内的光线。 信号处理单元被布置用于当背反射光的强度与预定值的绝对差超过阈值时触发警报。