Robert Boschgmbh

Ulrich Oppelt

Bernd Siber

Andreas Hensel

Anton Pfefferseder

Joachim Schneider

Stefan Sittenauer

Jack McNamara

Helmut Sautter

Lutz Mueller

Winfried Bernhard

Frank Rottmann

Andre Mueller

Muhammed Ali Narin

Gottfried Ernst

Torsten Meyer-Staufenbiel

Gunnar Boeck

The invention relates to an alarm device for detecting and communicating environment and device-specific states, comprising a communication interface for the wireless transmission of information G to one or more destination addresses B, wherein the communication interface is designed in particular as a WLAN interface and/or as a mobile radio interface, wherein the communication interface is designed in terms of program and/or circuitry to establish and/or maintain access to the public Internet (A) in order to transmit the information (G) to one or more destination addresses (B).

Wireless alarm device for detecting and communicating environment and system specific states using the internet

A fire detector having a fire sensor device for detecting a fire and for outputting a fire signal. The fire detector also has an environmental sensor device for detecting bodies in the environment of the fire detector and for outputting an environmental signal. A control device sets a normal state and an alarm state of the fire detector on the basis of the fire signal, the fire detector additionally being in the form of a man-machine interface, and the control device checking whether the environmental signal can be deemed to be a user input.

Fire detector with a man-machine interface and method for controlling the fire detector

The present invention relates to a fire alarmthat includes a baseand a fire alarm insert which can be connected to base. A covering capand a sheetlocated between the covering capand the fire alarm insertare provided to cover fire alarm insert

Fire alarm with a transmitter spaced from a receiver through a colored sheet

A fire detector operating by the scattered radiation principle is described, having at least one radiation transmitter and at least one radiation receiver, whose beam paths form a scattering volume. The fire detector includes, in addition to at least one first radiation transmitter and one first radiation receiver, at least one second radiation transmitter and one second radiation receiver, whose beam paths form at least two spatially separated scattering volumes.

Fire detector

A power supply base for an alarm device contains at least one pair, comprising a first terminal for an incoming power supply line and a second terminal for an outgoing power supply line, and a switch element for initial electrical connection of the respective first terminal to the second terminal of the at least one pair. The switch element has an actuating device for switching the switch element into a nonconducting state in response to an insertion of an alarm device into the power supply base.

Power supply base for an alarm device

A fire alarm for an installation via a housing that is flush with the ceiling, having at least one light source arranged in the housing and at least one light receiver arranged in the housing, as well as a shutter disk, which seals the housing. To prevent the spreading of stray light between the light source and the light receiver via the shutter disk, a shield, for example, is provided in the shutter disk to suppress or absorb stray light.

Fire alarm

An imaging fire detector is used to detect a fire from a recorded image sequence. Either a video camera or an infrared camera is used as an imaging device. Characterizing parameters of a fire are either analyzed individually or in combination. In order to detect changes, an object analysis, a pattern analysis or a spatial-frequency analysis of the recorded image sequences is conducted. Using a threshold value for the duration of the changes, short-term changes are detected and discarded. In a further embodiment, the fire detector may also be used as a burglar alarm. With the aid of communication means, the fire detector transmits a fire alert to a master station.

Imaging fire detector

The invention proposes a method for operating an evaluation circuit for an electrochemical cell wherein the evaluation circuit is switched on for a first time period and is switched off for a second time period. The ratio between the first and the second time periods is selected to be less than 1. The measurement value of the electrochemical cell undergoes a current amplification in the evaluation circuit.

Method for the operation of an analytical circuit for an electromechanical cell

The present invention relates to testing equipmentfor a fire alarmIt includes a testing pole (), a range spacer () connected to the testing pole (), and a reflective means and/or scattering means situated in the inside of the essentially pot-shaped designed range spacer ().

Testing equipment for a fire alarm

A device for deflecting optical beams is provided, the device having an array of mirror elements, and each mirror element being pivotable at any angle independently from another mirror element. This array may be manufactured micromechanically. The pivoting of the mirror element may be executed either capacitively or thermally. The array may be situated in a camera either as a deflecting mirror or as a lens. Scanning of a space element is also possible by using the array. Applications of the device include, e.g., use in a passive infrared detector, as well as use in a scattered-light smoke detector.

Device for deflecting optical beams

Alarm detector

A danger detecting system has a danger detecting control center, at least one detector, at least one conductor connecting the danger detecting control center with the at least one detector, the danger detecting control center producing an output signal depending on a signal of the detector, the danger detecting control center being composed of a plurality of modules, a bus through which the modules are connected, the danger detecting control center and the modules being formed so that the modules are mountable and/or dismountable during an operation of the danger detecting control center.

Danger detecting system

A method for detecting fires is proposed that serves to avoid false alarms, by providing that an alarm threshold is determined as a function of signal parameters derived from at least one sensor signal. False alarms are thus advantageously precluded. This is still further improved by setting up an alarm interval for which the alarm threshold must be exceeded, if an alarm is to be indicated. The alarm interval can also be determined adaptively as a function of the signal parameters. An upper threshold and a lower threshold are provided for the alarm interval and the alarm threshold, respectively, in order to build in a certain safety, so that the alarm threshold and alarm interval will not assume values that put a function of the fire detector at risk. It is also possible to use more sensor signals, in which case signal parameters can be generated by linking the sensor signals. As the fire detector, a scattered light smoke detector is preferably used, which is equipped with a labyrinth and a measurement chamber.

Method for detecting fires

A dispersion light smoke detector has a structure for providing a definite measuring volume, the structure being formed as two light receivers or an imaging optical system for one light receiver.

Scattered light smoke alarm

An operation testing of a temperature sensor of an alarm includes spraying so that the sprayable material is sprayable on the temperature sensor, a temperature decrease due to the spraying is detected, and an operation ability is determined in dependence on the testing.

Growing community of inventors

Zorneding, Germany

Ulrich Oppelt