(EN) A fire alarm using a 'neural net' suitable for obtaining at least one fire information for monitoring fire by collecting a number of time-series elements of detection information from each of at least one fire detectors for physical quantities based on a fire and by performing overall signal processing of these detection information. The fire alarm includes signal processors for performing signal processing on the basis of a number of detection signals collected in a time series from fire detector, giving weight corresp. to inputted detection information in accordance with the degree of contribution to the fire information when the detection information is input and calculating the fire information on the basis of the weighted detection information. This signal processor includes memory for storing in advance weight values for giving the corresp. weight to each element of the information. The weight value stored in the memory is set in such a manner that the fire information to be calculated by the signal processor when a specific set of information is given can be approximated to the desired fire information to be obtd. by the specific set of information. @(58pp Dwg.No.1/12)@
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