Smoke density monitor system

Details Smoke density monitor system Smoke density monitor system

1990-12-06

1993-02-23

Cosimano, Edward R.

Boots, shoes, and leggings

340630, G08B 17107

Patent

active

051896311

ABSTRACT:
A smoke density monitor system comprises an imaginarily dividing a space to be monitored two-dimensionally into a plurality of imaginary subspaces so that plural paths passing through a plurality of arbitrary subspaces are arranged to intersect each other; measuring the transmittance of light along each path; calculating a transmittance of light at each imaginary subspace using a mathematical method in which the measured result of the transmittance of the each path are placed into matrices and the solution to an equation involving the matrices is carried out with matrices; and determining a smoke density at each of the imaginary subspace on the basis of the transmittance at each subspaces.

REFERENCES:
patent: 3919702 (1975-11-01), Hayes et al.
patent: 4131888 (1978-12-01), Galvin
patent: 4763903 (1988-08-01), Goodwin et al.
patent: 4972178 (1990-11-01), Suzuki
patent: 4977527 (1990-12-01), Shaw et al.

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