Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1983-08-04
1985-07-09
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
209551, 209587, 377 10, G06M 700
Patent
active
045286809
ABSTRACT:
Apparatus for counting articles traveling in a random pattern along a predetermined path in a selected direction comprising an article counting stage which is positioned along the predetermined path, a source positioned relative to the article counting stage for producing in a scan pattern a plurality of pulsed, spaced parallel beams of radiation such that each article is adapted to independently intercept at least two beams of radiation and to produce therefrom at least two pulses of radiation, each of said beams being directed along a scan path into the article counting stage wherein selected beams of radiation are adapted to be intercepted by a selected portion of the article passing through the article counting stage, a radiation pulse receiver for receiving the at least two pulses of radiation intercepted by and the article and which produces therefrom output signals in a time spatial sequence representing the radiation level of the at least two received pulses of radiation exceeding a threshold level with a time spatial sequence between the pulses commencing with the first received radiation pulse output signal and a logic circuit which is responsive to the output signals and responds to the first received radiation pulse output signal to produce and pass a count signal and to inhibit passing of count signals produced from later received radiation pulse output signal from the same article unless a later received radiation output pulse is of a greater amplitude or duration whereupon the count signal produced therefrom is passed and the count signals from the first received radiation pulse output signal and other count pulses are inhibited as shown. A method for counting articles traveling in a random pattern along a predetermined path in a selected direction is also shown.
REFERENCES:
patent: 4139766 (1979-02-01), Conway
patent: 4147619 (1979-04-01), Wassmer et al.
patent: 4186839 (1980-02-01), Wassmer et al.
patent: 4276983 (1981-07-01), Witmer
patent: 4281765 (1981-08-01), Brazell et al.
patent: 4308959 (1982-01-01), Hoover et al.
patent: 4356387 (1982-10-01), Tsubota et al.
patent: 4369886 (1983-01-01), Lane et al.
Heyman John S.
Meaney, Jr. Daniel J.
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