Rip detector signal detection circuit

Details Rip detector signal detection circuit Rip detector signal detection circuit

1978-01-23

1980-10-21

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

307351, 307358, 328146, 329109, 329204, 340572, B65G 4302, G08B 2100, H04B 110

Patent

active

042297354

ABSTRACT:
A detection circuit accurately monitors an AC signal, which is pulse modulated by information characteristic or indicative of the integrity of a conveyor belt or the like, to provide a distinguishable output representative of such integrity. Such distinguishable output may be utilized for display purposes and/or for control purposes to stop a ripped conveyor belt.
The detection circuit includes a combination circuit of a voltage doubler with high pass filters utilizing full wave rectifiers, RC filters, and a common summing junction. The detection circuit also includes a DC level detector with an automatic gain response adjustment.

REFERENCES:
patent: 3286031 (1966-11-01), Geddes
patent: 3341781 (1967-09-01), Rooks
patent: 3386042 (1968-05-01), Moes
patent: 3479599 (1969-11-01), Molik
patent: 3577136 (1971-05-01), Wolf
patent: 3609407 (1971-09-01), Garuts
patent: 3792459 (1974-02-01), Snyder
patent: 3950694 (1976-04-01), Maas
patent: 4127817 (1978-11-01), Bell, Jr.

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