Patent ID: 6867700
Filing Date: 2005-03-15
Classification: G08B

Abstract:
1. A method for evaluating the development of a hazard situation within a space or an area with the aid of hazard level concepts and, upon the occurrence of a hazard situation, creating conditions whereby the hazard level of the hazard situation can be obtained on the basis of information relating to development of said hazard situation deriving from a plurality of sensors that function in respect of mutually the same or mutually different criteria, wherein information relating to a time-wise variation of output signals related to the hazard situation and obtained from a first sensor and also relating to a time-wise variation of similar output signals obtained from a second sensor can be stored; a comparison between momentary values of the output signals and/or measured time-related changes generate a hazard level value for the occurring hazard situation through the medium of a calculating circuit; and solely the hazard level values that exceed a first hazard level of an indicated hazard situation are chosen to follow the development of the hazard situation by means of the output signals from said sensors, wherein the calculated hazard level is dependent on a significant change in the variation of the output signal of the first sensor in respect of the hazard situation, a significant change in the variation of the output signal of the second sensor in respect of the same hazard situation, the time duration between said significant changes, and the distance between used sensors.