Boots – shoes – and leggings
Patent
1983-10-04
1986-05-20
Krass, Errol A.
Boots, shoes, and leggings
328163, 364554, 364574, 375103, 378 54, G01N 700, G01N 900
Patent
active
045905797
ABSTRACT:
A device is provided for enabling the signal generated by a sensing device to be presented which is representative of the property sensed of a flowing material over a conveyor, or the like. The output is presented for observation and/or as a usable input to control means responsive to the sensed property. A pair of signals, one with a slow time constant, the other with a fast time constant, is derived from the sensing device signal. An output signal is in turn derived from one of the two signals, normally the slow. From the event rate in the sensing device, the expected statistical deviation is computed and utilized as the threshold of divergence of the pair of signals. When the divergence exceeds the threshold, the fast signal is switched to be the same value as the slow signal so that no perceptible perturbation appears in the output and the output signal is derived from the fast signal. At the next and each successive fast time constant, if the convergence still exists, the slow signal is set equal to the fast signal. When the divergence ceases, the value of the slow signal is switched to be the value of the fast signal and the output is switched to come from the slow signal for stable representation of a stable condition.
REFERENCES:
patent: 3832550 (1974-08-01), Bartlett et al.
patent: 3832551 (1974-08-01), Bartlett et al.
patent: 3947636 (1976-03-01), Edgar
patent: 4301366 (1981-11-01), Bertin et al.
Krass Errol A.
Ramsey Engineering Company
Teska Kevin J.
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