TOBACCO SMOKE DETECTOR, HAZARD DETECTOR, AND METHOD OF DISTINGUISHING TOBACCO SMOKE FROM FIRE SMOKE

摘要

A tobacco smoke detector has a gas-sensitive semiconductor sensor device (in particular, GasFET sensor) with a first gas-sensitive layer which reacts to tobacco smoke and a second gas-sensitive layer which reacts to fire products. An evaluation unit (e.g. microchip) analyzes the signals supplied by the first and the second gas-sensitive layer and determines whether tobacco smoke is present. Optionally, the tobacco smoke detector contains an interface for providing a connection using signals or data technology to a hazard detector and/or a hazard control unit and/or an output device, in particular for transmitting information as to whether tobacco smoke is present. Optionally, the tobacco smoke detector can be operationally integrated into a conventional hazard detector (e.g. fire alarm).

主权项

1. A tobacco smoke detector, comprising:
a gas-sensitive semiconductor sensor device having a first gas-sensitive layer which reacts to tobacco smoke, and a second gas-sensitive layer which reacts to fire products; an evaluation unit for analyzing signals supplied by said first and second gas-sensitive layers and for determining whether the tobacco smoke is present; and an interface for connecting to a hazard detector, a hazard control unit and/or an output device via further signals or data technology, including a transmission of information as to whether the tobacco smoke is present.