摘要:
A passive microwave receiver array, operating in the one meter to sub-millimeter wavelengths range and including an internationally protected range of frequencies of varying bandwidth, may be used for fire and intrusion detection. One or more receiver array can be used to provide a plurality of frequency ranges that can be detected. In an interior installation, one or more receiver array can be placed inside a wall. In other embodiments, the receiver and array can be in the form of a hand-held or wearable device. This method and apparatus achieves high performance by exploiting conventional low noise amplification block conversion circuits and provides the detection of thermal signals through clear, smoky, misty, or environmentally untenable conditions as well as the detection of fire and intrusion events through a non-metallic wall.
摘要:
The present invention relates to a door control system using radio communication. According to the invention, a main device controls the opening and closing of a door by using a portable wireless card. The main device comprises a long wave emitting portion, a very high frequency wave receiving portion, a very high frequency wave emitting portion, memory, processor and recording media in which a program that is executable by the processor is recorded. The portable card comprises a long wave receiving portion, a card processor and recording media in which a program that is executable by the card processor is recorded.
摘要:
System zur automatischen Personenüberwachung im häuslichen Umfeld, unter Verwendung von Sensoren zur Erfassung von charakteristischen Parametern, die einer Überwachungszentrale zugeleitet werden, die im Bedarfsfall eine Alarmzentrale, insbesondere einen Dienstleister alarmiert, wobei die Sensoren eine Mehrzahl regelmäßig benutzter oder betätigter häuslicher Geräte (auch Messgeräte) erfassen und die Sensordaten personalisiert und automatisch der Zentrale zugeleitet werden, die die einlaufenden Daten unter Verwendung eines Expertensystems mit vorgegebenen Regeln auswertet.
摘要:
Die Erfindung betrifft ein Verfahren zum Testen eines optischen Sensors mit einer Sendeeinheit zum Strahlen von Sendelicht in einem Überwachungsbereich, mit einer Empfangseinheit zum Nachweis von aus dem Überwachungsbereich zurückgestrahltem Licht, wobei die Empfangseinheit mindestens einen Detektor mit einer Mehrzahl von Detektorsegmenten aufweist, mit einer Steuer- und Auswerteeinheit zum Ansteuern der Sendeeinheit, zum Auswerten von von der Empfangseinheit nachgewiesenen Messsignalen und zum Abgeben von Schaltsignalen an eine angeschlossene Test-Einrichtung, indem Testlicht auf die Detektorsegmente gestrahlt, eine Reaktion der Detektorsegmente ausgewertet und in Abhängigkeit dieser Auswertung ein Fehlersignal abgegeben wird. Das Verfahren ist dadurch gekennzeichnet, dass räumlich benachbarte Detektorsegmente jeweils mit Intensitäten des Testlichts bestrahlt werden, die zum messtechnischen Unterscheiden der Reaktionen von räumlich benachbarten Detektorsegmenten bei ordnungsgemäßer Funktion der Detektorsegmente hinreichend unterschiedlich gewählt sind. Dies wird beispielweise einen Reflektor erreicht, der die Pfadlängen des Testlichts zu unterschiedlichen Detektorsegmenten unterschiedlich lang macht. Anschließend werden Reaktionen der einzelnen Detektorsegmente auf die Bestrahlung mit Testlicht einzeln und im Vergleich mit Reaktionen von räumlich benachbarten Detektorsegmenten ausgewertet. Erkannt werden stuck-at-Fehler und Verkopplungen. Die Erfindung betrifft außerdem einen testbaren optischen Sensor.
摘要:
Embodiments of the present invention relate to a detector comprising first and second lenses for use with respective first and second sensing means; each lens comprising a plurality of Fresnel facets having respective fields of view adapted such that the fields of view of the first lens are alternately arranged with the fields of view of the second lens such that the fields of view of the first lens are adjacent only to, but do not overlap with, the fields of view of the second lens in a single direction.
摘要:
Embodiments of the present invention relate to a detector comprising first and second lenses for use with respective first and second sensing means; each lens comprising a plurality of Fresnel facets having respective fields of view adapted such that the fields of view of the first lens are alternately arranged with the fields of view of the second lens such that the fields of view of the first lens are adjacent only to, but do not overlap with, the fields of view of the second lens in a single direction.
摘要:
A double-eye crime prevention sensor system has a first pair of detection shafts (6) set so as to extend in substantially the same direction horizontally some distance apart within a predetermined space, and a second pair of detection shafts (7) each set so as to extend substantially in the same direction as each of the first shafts (6) some distance above or below the first shafts (6). An energy-focusing element (4) for focusing the radiation energy incident along the shafts is disposed at the end of the two pairs of detection shafts, two pairs of radiation energy-sensing elements (8) and (9) disposed at the focus positions corresponding to the two pairs of detection shafts in the vicinity of the focus of the focusing element in such a manner that two elements (8a), (8b) or (9a), (9b) forming the elements (8) or (9) are each connected to produce a substantially composite sensing output when radiation energy is detected with a time lag, and a signal processor is provided for generating an alarm when the two composite sensing outputs from the sensor elements coincide in the element-array direction to produce the energy-detecting time lag of the two composite sensing outputs from the sensor elements.
摘要:
The present invention relates to a passive radiometric imaging device (10) and a corresponding method for scanning a scene (1) and reconstructing an image (6) of said scene (1). To provide an improved image quality, the proposed device comprises a radiometer (20) for detecting radiation (3) emitted in a predetermined spectral range from a plurality of spots (2) of said scene (1) to obtain a data set (7) of radiation samples (4) including at least one radiation sample per spot, and a processing means (30) for subsequently determining pixel values (5) of pixels of the image to be reconstructed, said processing means (30) comprising a cost calculation unit (40) configured to calculate costs for the radiation samples of said data sub-set (8) according to a predetermined cost function, said costs indicating the level of noise in the respective radiation sample, and an optimization unit (50) configured to determine a pixel value as a label value from a set of label values, a label indicating a radiation sample or a group of radiation samples of the respective data sub-set (8), by determining an extremum of energy values determined for different radiation samples or different groups of radiation samples of the respective data sub-set (8) by use of an energy function, said energy function forming a sum adding a first summand including the costs of the radiation sample or group of radiation samples, for which the energy value is determined, and a second summand taking account of the costs of at least one radiation sample or group of radiation samples of at least one neighboring data sub-set.