| 摘要 |
A multiple sensor smoke detector includes at least an ionization and a photoelectric sensor. Outputs from the sensors are fed to circuitry for generating continuously variable coefficients. One coefficient corresponds to each sens or output. Respective coefficients and sensor outputs are multiplied in multiplier circuitry to produce processed outputs. The processed outputs are combined i n a summing circuit to produce at least one output value indicative of a level o f detected smoke. The coefficient generating circuitry, the multiplier circuit ry and the combining circuitry could be implemented in a programmed microprocessor. The coefficient generating circuitry could be implemented using prestor ed membership functions indicative of various types of fires.
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