Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1982-01-22
1984-08-28
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
340561, 377 12, 328 5, G06M 900
Patent
active
044687958
ABSTRACT:
Integrated circuits contained in a rail are passed through cylindrical electrodes. Two electrodes are connected to an oscillator to transmit out of phase fields. A receiving electrode's output has the residual oscillator frequency component removed by a nulling network and summation device, whose output is fed to a band pass amplifier and balanced demodulator, which receives a phase shifted input from the oscillator. Demodulator output components at and above the oscillator frequency are removed by a low pass filter. A demodulator output above the reference voltage triggers a counter.
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Elektor, Oct. 1978, vol. 4, No. 10, pp. 10-09 to 10-11, "Proximity Detector".
Biase N.
Heyman John S.
Wray James C.
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