Siemens Aktiengesellschaft

Siemens Schweiz Ag

Siemens Building Technologies Ag

Dieter Wieser

Peter Kunz

Hilmar Konrad

Walter Vollenweider

Kurt Müller

Kurt M&uuml;ller

Markus Loepfe

Wolfgang Hass

Thomas Brupbacher

An image-capturing device contains a housing and a camera accommodated in the housing in particular for continuous image capturing and the generation of corresponding image data. Accordingly, the camera is a thermal-imaging camera for capturing thermal images. At least one part of the housing lying in the field of view of the thermal-imaging camera or a part of the housing embodied as an optical lens is constructed such that the part is at least substantially transparent in the infrared range and nontransparent, in particular opaque, in the optically visible range. According to one particular embodiment, the image-capturing device is configured as a person-counting mechanism.

Image-capturing device, in particular person-counting mechanism, having a housing which is transparent in the infrared range and nontransparent in the optically visible range

A method and a system evaluate a security situation in a building. The building has accommodation areas with access authorization for authorized persons. A count of the persons present in the accommodation areas is determined in that, in a radio network which contains a plurality of radio stations arranged spatially distributed in the ceiling, wall or floor, the influencing of the radio field of the radio stations between one another by persons physically present there is evaluated, by a radio tomographic location and detection method. A current count of identifiers which are read by RFID reading devices of RFID transponders is determined, the identifiers being carried by authorized persons. The RFID reading devices are arranged there spatially distributed in the ceiling, wall or floor. Based on the respective counts of personal identifiers and the determined person count, an indicator for evaluating the current security situation in the building is determined.

Evaluation of the security situation in a building by means of a radio tomographic location and detection method and by means of RFID reading devices

A sequence of video images is generated of a pavement area of an airport which contains one or more objects. A processor accesses a background model of the pavement area and determines in a current image a single cluster of foreground pixels that is not part of the background model and assigns a first value to each foreground pixel in the cluster to create a foreground mask. The background model is updated by learning new conditions. A convex hull is generated from the foreground mask. A ratio is determined from pixels captured by the complex hull and pixels in the foreground mask. A ratio higher than a threshold value indicates an object not being an airplane and an alert is displayed on a computer display. Images may be thermal images. A surveillance system based on the calculated ratio is disclosed.

Systems and methods to classify moving airplanes in airports

A detector device for detecting the presence of airborne particles such as smoke includes a light source, an optical bridge, a measurement path, a reference path, a measurement receiver and a reference receiver. The optical bridge, in addition to the light source and the measurement and reference receivers, are the only optical elements of the detector device. The optical bridge includes two circular apertures arranged downstream of the light source along the radiation path. The light source is arranged in a chamber having an air reservoir, whose surface area is substantially greater than that of the light source. A temperature drift curve is determined by heating the light source and storing the detector signal at different temperatures.

Optical smoke detector operating in accordance with the extinction principle and method for compensating its temperature drift

Growing community of inventors

Küsnacht, Switzerland

Dieter Wieser