Opto-electronic contact mechanism
AssigneeSiemens Aktiengesellschaft
InventorFranz Tippner
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Abstract
The invention relates to an opto-electronic contact mechanism in which a potential of an input circuit is separated from the potential of an output circuit by two optocouplers. The optocouplers contain an excitor circuit having a radiation transmitter and also a radiation receiver optically coupled to the transmitter, all within a common housing. The mechanism utilizes a pulsed operational mode to distinguish normal operation from erroneous operation.
Claims8
An opto-electronic contact mechanism for coupling between an input and an ouput having different operating potentials comprising:
- a. first and second optocoupler means each having a radiation transmitter and a radiation receiver;
- b. an input circuit for a direct current electrical signal comprised of the radiation receiver of the first optocoupler connected in series with the radiation transmitter of the second optocoupler;
- c. an output circuit comprised of the radiation receiver of the second optocoupler;
- and
- d. a timing generator connected to the radiation transmitter of the first optocoupler for producing a time-varying radiation from said optocoupler radiation transmitter.
An opto-electronic coupling mechanism for prevention of false signal indications comprising:
- a. first and second couplers each comprising a radiation transmitter and receiver;
- b. electrical data signal input terminals having the first coupler transmitter and second coupler receiver connected in series thereacross, said data signal providing a supply potential for said first coupler transmitter and second coupler receiver.
- c. ouput terminals connected to said second coupler receiver;
- and
- d. a signal generator connected to said first coupler transmitter.
Dependencies are inferred from the claim text.