Method for supervising a switch

Details Method for supervising a switch Method for supervising a switch

1990-12-13

1994-08-23

Pellinen, A. D.

Electrical transmission or interconnection systems

Switching systems

340644, 324418, G08B 2100, G01R 3102

Patent

active

053410297

ABSTRACT:
The invention relates to a method for the supervision of a switch, in which a switch supervision signal (CA1, CA2, CB1, CB2) is generated and transmitted to the switch contact to be supervised, and in which the switch supervision signal (CA1, CA2, CB1, CB2) returning from the switch contact is detected and compared with the emitted signal. A coded signal is used as switch supervision signal (CA1, CA2, CB1, CB2) and this coded signal is transmitted serially to the switch contact to be supervised.

REFERENCES:
patent: 4484180 (1984-11-01), Deforeit
patent: 4777479 (1988-10-01), Hinckley

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