Parallel analog-digital monitoring system

Details Parallel analog-digital monitoring system Parallel analog-digital monitoring system

1994-02-25

1997-04-08

O'Shea, Sandra L.

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

324160, 32420725, 3242072, 364133, 364187, 340508, 318563, 318561, G01P 348

Patent

active

056191316

ABSTRACT:
An electronic monitoring system provides an actual value sensor which detects an actual value of a component to be monitored, e.g., the rotational speed of a drive motor, and emits actual value signals, a signal path along which actual value signals are transmitted, and an evaluating unit connected to the signal path. The signal path is divided into two separate but parallel signal paths along which the actual value signals emitted by the actual value sensor are processed differently. For example, the actual value signals emitted by the actual value sensor may undergo digital signal processing along one path and analog signal processing along the other path. The actual value signals transmitted along the two paths are received by the evaluating unit which compares the signals and initiates appropriate steps if there are deviations between the two sets of actual value signals.

REFERENCES:
patent: 3709626 (1973-01-01), Eggenberger
patent: 3832635 (1974-08-01), Cass
patent: 4318093 (1982-03-01), Wood et al.
patent: 4494207 (1985-01-01), Chang et al.
patent: 4521871 (1985-06-01), Galdun et al.
patent: 4587470 (1986-05-01), Yamawaki
patent: 4641517 (1987-02-01), Spock et al.
patent: 4687946 (1987-08-01), Jones
patent: 4808933 (1989-02-01), Kobayashi et al.
patent: 5229699 (1993-07-01), Chy et al.
Brochure: "Feuerungsautomaten fur Ol-und Gasbrenner" by Landis & Gyr.

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