Amrona Ag

Wagner Alarm-und Sicherungssysteme Gmbh

Wagner Alarm Sicherungssysteme Gmbh

Wagner Group Gmbh

Andreas Siemens

Ernst-Werner Wagner

Ernst Werner Wagner

Claus-Peter Reinecke

Kai-Uwe Preikszas

An assembly () for attenuating the impinging light of a beam of radiation of finite expansion with the objective of realizing reliable attenuation particularly of directly impinging light comprises a light source () for producing a beam of unpolarized light, preferably unpolarized monochromatic light, a useful light region () through which the unpolarized light passes and preferably passes through in a straight line from the light source () as well as an absorption device () arranged downstream of the useful light region () and preferably downstream in the direction of the direct beam radiation for at least partly absorbing impinging light, wherein the absorption device () comprises at least one polarization device () arranged in the direction of the light beam.

Assembly for attenuating impinging light of a beam of radiation

A device and a method for detecting scattered light signals is specified. A light source exposes a scattered light area in which particles may be present to light. With the objective of reducing costs and improving detection accuracy, the device comprises a plurality of optical sensors for detecting scattered light and an evaluation unit for evaluating the signals detected by the optical sensors, wherein the sensors are each arranged at a sensor angle relative to the incident axis of the incident light so as to detect scattered light from the scattered light area, wherein one of the plurality of optical sensors is a reference sensor, and wherein the evaluation unit is designed to relate the signal profiles of the other optical sensors to the signal profile of the reference sensor, wherein the signal profiles of the optical sensors serve in classifying any particles which may be present in the scattered light area.

Device and method for detecting scattered light signals

A method of evaluating a scattered light signal generated by a scattered light receiver when detecting especially fine particles in a carrier medium, wherein the scattered light signal runs through a filter algorithm operation to evaluate the scattered light signal subject to specific filter algorithms, the filter algorithm operation being based on a slope of the scattered light signal.

Method for evaluation of a scattered light signal and scattered light detector used for carrying out said method

The invention relates to a method and a device for detecting and localizing sources of fire in one or more monitored areas (R, . . . , R) utilizing a suction pipe system () connecting the plurality of monitored areas (R, . . . , R) and which communicates with each individual monitored area (R, . . . , R) by means of at least one suction opening (), a suction device () for extracting air samples () representative of the room air of the individual monitored areas (R, . . . , R) from the individual monitored areas (R, . . . , R) by means of the suction pipe system () and the suction openings (), and a sensor () for detecting at least one fire parameter in the air samples () extracted through the suction pipe system (), whereby the inventive device comprises a blowing device () for blowing out the air samples () suctioned into the suction pipe system () when sensor () detects at least one fire parameter in the extracted air samples (). The fire is localized by means of the transit time measurement of a re-extracted fire parameter.

Method and device for identifying and localizing a fire

The invention relates to a detector for scattered light, especially for detecting particles in a carrier medium. Said detector comprises a housing ( ) and an inlet ( ) and an outlet ( ) in the housing ( ). The carrier medium flows through the housing between said inlet and outlet and on a flow path ( ). The inventive detector also comprises a light source ( ) that directs light to a scattered light centre ( ) which lies on the flow path ( ). The inventive detector further comprises a receiver ( ) for a portion of the light which is scattered onto particles in the scattered light centre ( ) and a light trap ( ) for light which is not scattered in the scattered light centre ( ). The aim of the invention is to improve such a detector for scattered light in such a way that compact construction and high responsiveness are guaranteed. The light trap ( ) can be embodied in two ways. According to a first embodiment, the light source ( ) is arranged outside the flow path ( ) and the centre axis ( ) of the light cone ( ) pertaining to the light source ( ) extends at least partially parallel in relation to or on the centre line ( ) of the flow path ( ). The light trap ( ) allocated to the light source ( ) is part of the flow channel guiding the flow path ( ). According to a second embodiment, the receiver ( ) is arranged outside the flow path ( ). The axis ( ) of the receiver extends at least partially parallel in relation to or on the centre line ( ) pertaining to the flow path ( ). The light trap ( ) allocated to the receiver ( ) is part of the flow channel guiding the flow path ( ).

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Laatzen, Germany

Andreas Siemens