Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1980-02-28
1984-04-03
Thomas, James D.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
377 20, 377 44, 364179, 364565, 364426, 340 47, 246169A, 246182R, 246169D, G06M 302
Patent
active
044411960
ABSTRACT:
A speed independent system is used for obtaining a preselected number of samples from an object moving along a fixed path, such as a railroad train passing through a sensing zone along the section of track. The sensing zone is defined by a pair of wheel sensors. Upstream of the sensing zone a third sensor is positioned. The distance between the third sensor and the closer of the pair of sensors comprises a reference distance which is the length of the sensing zone multiplied by a known multiple. The time for the train to pass through the reference distance is obtained and then divided by a divisor comprising the product of the known multiple and the desired number of samples to obtain a single interval. During the time the train passes through the sensing zone consecutive intervals are counted off to obtain the desired number of samples.
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Servo Corporation of America
Thomas James D.
Williams Jr. Archie E.
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