US Patent 6873256 Intelligent building alarm

System and method for detecting, monitoring and evaluating hazardous situations in a structure includes the use of an expert system and, to the extent necessary, fuzzy logic in the generation of solution sets. Sensor units having two-way communication capability are strategically located in a structure or in a matrix of structures. These units are high-level multifunctional detectors, RF and other wireless or hardwired communication modules and signal generating systems that may communicate with a base station, with other modules and/or may have onboard logical solution generation capacity.