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Fire Detection and Location Through Inverse Problem Solution.

pdf icon Fire Detection and Location Through Inverse Problem Solution. (449 K)
Richards, R. F.; Plumb, O. A.

National Institute of Standards and Technology (NIST) and Society of Fire Protection Engineers (SFPE). International Conference on Fire Research and Engineering (ICFRE). Proceedings. September 10-15, 1995, Orlando, FL, SFPE, Boston, MA, Lund, D. P.; Angell, E. A., Editor(s)(s), 312-317 pp, 1995.


National Institute of Standards and Technology, Gaithersburg, MD


fire research; fire detection; fire detection systems; fire models; algorithms


A prototype system which can detect, locate, and size an accidental fire within the first few minutes of the fire's ignition is presented. The prototype system employs a black and white video camera to monitor color-changing temperature sensitive sensors distributed around the space to be protected. Transient temperatures revealed by the sensors and gathered by the video camera are used as data to locate and size the fire in an algorithm based on the solution of an inverse heat transfer problem. Limits on the accuracy of the inverse problem solution algorithm, both in locating fires and determining their heat release rate are established using computer synthesized fire data. The validity of the computer simulations is verified with results of experimental tests of the prototype detection system in locating and sizing flame sources in a lab scale enclosure.