- Author
- Tompkin, C. | Ryser, P.
- Title
- Optische Detektion von Rauchpartikeln durch Messung der Lichtextinktion uber eine kurze Strecke. [Optical Detection of Smoke Particles Through Measurement of Short Distance Light Extinction.]
- Coporate
- Cerberus AG, Maennedorf, Switzerland
- Book or Conf
- University of Duisburg. International Conference on Automatic Fire Detection "AUBE '95", 10th. Proceedings. [Internationale Konferenz uber Automatischen Brandentdeckung.] April 4-6, 1995, Duisburg, Germany, Luck, H., Editors, 336-345 p., 1995
- Keywords
- fire detection | fire detection systems | light extinction | smoke | sensitivity | optical measuring instruments
- Abstract
- [Abstract in English] Smoke is detected through the measurement of light extinction. Extremely high sensitivity is realised through the use of an integrated optical circuit. Four light paths with 50-micron feature size are embedded in a glass chip; one path is interrupted by a 25 mm air path which allows for the measurement of light extinction. Light emitters and receivers are attached externally by an on-line method to the ports of the light paths. The sensitivity of the device is demonstrated experimentally and is compared to other optical measurement devices.