Monitoring means for industrial process plants

Details Monitoring means for industrial process plants Monitoring means for industrial process plants

1980-09-02

1983-12-20

Ruggiero, Joseph F.

Boots, shoes, and leggings

364138, 364186, 371 20, 371 36, 376217, 34082506, G06F 1130, G06F 1546

Patent

active

044221401

ABSTRACT:
System failure in the acquisition of data from a process plant such as a nuclear reactor owing to stuck signals is avoided by arranging input signals from transducers in the plant in a test pattern. The signal inputs are physically wired in the test pattern which is then decoded by either or both of a computer based system which allows for the test pattern and/or a hard wired system which mimics the input connections. Transmission of the multiplexed signals is made dynamic by provision of a polarity reverser switch (10) which alternates between signals or scans. A pattern recognition logic or a mimicing physical wiring decode the signals from the inputs or the computer system and the hard wired system respectively.

REFERENCES:
patent: 3109929 (1963-11-01), Picard
patent: 3435416 (1969-03-01), Kretsch et al.
patent: 4048483 (1977-09-01), Keats
patent: 4200226 (1980-04-01), Piras
patent: 4236220 (1980-11-01), Kogami et al.
patent: 4292129 (1981-09-01), Barry

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