Electronic integrator for chart recorder

Details Electronic integrator for chart recorder Electronic integrator for chart recorder

1975-12-29

1977-07-12

Miller, Jr., George H.

Recorders

Plural-function recorder, distinguishable recordings

Single marker and single record receiver

346 13, 235183, G01D 928, G01D 900, G06G 718

Patent

active

040358097

ABSTRACT:
An integrator for continually computing the area under a curve drawn by a chart recorder, and displaying the area information by superimposing small spikes on the curve. The integrator uses a voltage-to-frequency converter that derives its input from the signal source to generate the spikes. A frequency divider circuit can be used so that every nth spike is larger or negative, making readout easier. The spikes and the analog signal are electronically added and the resulting signal is connected to a standard laboratory pen chart recorder. The area under any selected portion of the chart curve is found by counting the spikes on the curve.

REFERENCES:
patent: 2946644 (1960-07-01), Henry
patent: 2967749 (1961-01-01), Strickler
patent: 3012838 (1961-12-01), Wagner et al.
patent: 3183515 (1965-05-01), Hartman et al.
patent: 3531633 (1970-09-01), Johnson
patent: 3742515 (1973-06-01), Yeiser
patent: 3749868 (1973-07-01), Lutz et al.
patent: 3750187 (1973-07-01), Keefer
patent: 3965477 (1976-06-01), Hambleton et al.

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