Micropump supervisory control

Details Micropump supervisory control Micropump supervisory control

1992-03-27

1993-08-24

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

310316, 310317, 310328, 3403094, 340691, 417 63, G08B 1900

Patent

active

052393194

ABSTRACT:
A micropump supervisory control method and apparatus having various functions, such as annunciation and safety measures. The control method and apparatus accurately control trace discharge rates through adjustment of the number and frequency of driving pulses for a piezoelectric valve element. In addition, the control method provides discharge, life-prediction and life-expiration warning, and operation acknowledge alarms and annunciations while driving the micropump, each having a predetermined sounding pattern. Micropump functions are also inhibited when a power source is reconnected.

REFERENCES:
patent: 3290669 (1966-12-01), Mews
patent: 4560979 (1985-12-01), Rosskopf
patent: 4602249 (1986-07-01), Abbott
patent: 4649886 (1987-03-01), Igashira et al.
patent: 4660027 (1987-04-01), Davis
patent: 4911616 (1990-03-01), Laumann, Jr.

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