Measuring and testing – Vibration – By mechanical waves
Patent
1976-10-08
1978-02-14
Queisser, Richard C.
Measuring and testing
Vibration
By mechanical waves
73 23, G01H 500
Patent
active
040731944
ABSTRACT:
A system for the periodic sampling and recording of a condition, such as noise. The system employs a transducer which gates strings of pulses to a tape recorder. The gating time is in accordance with the transducer output voltage at sampling time. At each sampling, a delay in recording is provided to allow the recorder motor to come up to speed. The recorded tape may be played back and the grouped recorded pulses counted and presented as noise levels which can be plotted against time.
REFERENCES:
patent: 3286177 (1966-11-01), Boer et al.
patent: 3595069 (1971-07-01), Fowler
patent: 3608363 (1971-09-01), Whittington
patent: 3778552 (1973-12-01), Edinborgh
patent: 3802535 (1974-04-01), Peake et al.
Henderson Terry L.
Willson Robert D.
Kreitman Stephen A.
Queisser Richard C.
The United States of America as represented by the Department of
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