Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Determining machine or apparatus operating time or...
Patent
1989-11-03
1991-07-02
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Determining machine or apparatus operating time or...
377 15, 377 20, 377112, 36455101, G07C 302
Patent
active
050291882
ABSTRACT:
An actuation counter is disclosed for counting the number of operation cycles of a valve or other electrically actuated device. The counter provides a real-time output display of the count for analysis by an operator. A battery operated counting circuit is configured in a housing and is responsive to the detection of load or actuation current on a conductor to increment a stored count. The actuation current which corresponds to the operation cycles of the monitored device is detected by a current probe. A preferred embodiment the counting circuit includes a delay circuit which operates to prevent an increment in the count due to spurious signals such as those induced by contact bounce. Access ports associated with the counting circuit are provided so that an operator can determined the presence or absence of magnetic fields by the use of a voltmeter. The counting circuit also preferably includes a threshold setting circuit and reset switch.
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Heyman John S.
Joyner Engineers and Trainers
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