Collecting process of fire data and fire detector using the proc

Details Collecting process of fire data and fire detector using the proc Collecting process of fire data and fire detector using the proc

1986-04-07

1988-06-07

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340511, 364178, G08B 1700

Patent

active

047499869

ABSTRACT:
A process for detecting a change in the physical phenomena caused by a fire in an analog form, periodically sampling the analog detection data, calculating moving average values of the time series sampling data for filtering, and establishing the sampling period and the number of smoothing data provided for the moving average calculation so that a cut-off frequency of the filtering is established which is coincident with the maximum frequency of the main frequency components of the analog detection data. The invention also relates to a fire detector and a fire alarm system for carrying out such a process.

REFERENCES:
patent: 4644331 (1987-02-01), Matsushita et al.

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