NIST Time|NIST Home|About NIST|Contact NIST

HomeAll Years:AuthorKeywordTitle2005-2010:AuthorKeywordTitle

Development of an Economical Video Based Fire Detection and Location System.


pdf icon Development of an Economical Video Based Fire Detection and Location System. (2617 K)
Plumb, O. A.; Richards, R. F.

NIST GCR 96-695; 73 p. July 1996.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service (NTIS), Technology Administration, U.S. Department of Commerce, Springfield, VA 22161.
Telephone: 1-800-553-6847 or 703-605-6000;
Fax: 703-605-6900; Rush Service (Telephone Orders Only) 800-553-6847;
Website: http://www.ntis.gov
Order number: PB96-193743

Keywords:

fire detection systems; cameras; fire protection; fire research; heat transfer; industrial plants

Abstract:

A method of detecting, locating, and sizing accidental fires based on the solution of an inverse heat transfer problem is described and a prototype video fire detection system employing that method is presented. The inverse heat transfer problem to be solved is that of the convective heating of a compartment ceiling by the hot plume of combustion gases rising from an accidental fire. An inverse problem solution algorithm capable of determining the location and heat release rate of the fire employing transient temperatures at the ceiling of the compartment as data is developed. A prototype system based on the use of a video camera to monitor an array of temperature-sensitive, color-changing sensors and capable of supplying the transient temperature data needed by the inverse problem solution algorithm is described. The limits on the accuracy of the inverse problem solution algorithm are demonstrated by exercising the algorithm, on transient temperature data from computer simulated compartment fires. The performance of the prototype video fire detection system is demonstrated by employing it to determine the location and heat release rate of a small flame source in a lab scale test enclosure.