Patent ID: 8886044

Claim:
A detection system for remote status monitoring of one or more possible conditions of a contact closure, said detection system comprising: a first impedance means (Z 1 ), a second impedance means (Z 2 ), and a third impedance means (Z 3 ); one or more comparators; said first, second, and third impedance means being selectively coupled between said contact closure and said one or more comparators; a known voltage (Vcc) being applied at said third impedance means; said selectively coupled first, second, and third impedance means configured to produce a signal voltage (Vx) at said one or more comparators, said signal voltage being unique for each said one or more conditions of said contact closure; each of said one or more comparators configured to respectively detect one of said unique signal voltages and to produce an electrical signal corresponding to said detected condition; an encoder, said encoder configured to convert said electrical signal of said one or more comparators into a modulated optical signal; a transmitter; a fiber optic cable, said transmitter configured to transmit said modulated optical signal over said fiber optic cable; a receiver, said receiver being coupled to said fiber optic cable and configured to receive said modulated optical signal; a decoder, said decoder configured to convert said received optical signal into said electrical signal; one or more detectors, each said one or more detectors respectively configured to detect one of said unique electrical signals for said corresponding contact closure conditions; an output relay and one or more status indicator lights, said output relay configured to respectively light up one of said one or more status indicator lights for said corresponding contact closure condition.