Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1985-10-31
1987-05-12
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376259, 364492, 364579, G21C 736
Patent
active
046648704
ABSTRACT:
In a protection system for a complex process control system which generates three independent actuation signals, the power interface circuit includes three pairs of switches arranged in three parallel groups of switches connected in series with the load and a voltage source. Each group of switches includes two switches selected from different pairs of switches and connected in series. Normally closed switches are used with normally energized loads and normally open switches with normally de-energized loads. Logic gates control actuation of each individual switch in response either to an associated actuation signal or a test signal generated by a microprocessor. The microprocessor generates a sequence of patterns of test signals which result in various combinations of switch actuations. The current through each group of switches resulting from each combination of switch actuations is compared by the microprocessor with expected values to evaluate circuit performance.
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Abeles Daniel C.
Walsh Donald P.
Westinghouse Electric Corp.
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