Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1979-03-05
1980-09-16
Caldwell, Sr., John W.
Communications: electrical
Condition responsive indicating system
With particular system function
340517, 340518, 340520, G08B 2500
Patent
active
042233020
ABSTRACT:
A conditions monitor circuit for repetitively displaying the condition of a plurality of sensors which recognize different conditions includes a plurality of gates that are divided into groups which specify conditions for their respective sensors. The gates in each group are connected to a particular sensor and there is a clock for sequentially enabling each group of gates. The enabling clock pulse for each group of gates is also connected to a driver circuit to indicate which sensor is being interrogated. The gates in each group are connected to all of the conditions indicating driver circuits through diodes. There are display means connected to the driver circuits for indicating both the particular sensor being scanned and the condition of that sensor.
REFERENCES:
patent: 3541550 (1970-11-01), Hamre
patent: 3543266 (1970-11-01), Morris
patent: 3812487 (1974-05-01), Burton
patent: 3872473 (1975-03-01), Melgaard et al.
patent: 3882492 (1975-05-01), McSorley et al.
patent: 3921168 (1975-11-01), Dunbar
patent: 3987439 (1976-10-01), Spaniola
patent: 3988730 (1976-10-01), Valker
Caldwell Sr. John W.
Crossland Donnie L.
Marvel Engineering Company
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