Registers – Platform operated – Platform actuated traffic counters
Patent
1975-03-27
1977-04-19
Shaw, Gareth D.
Registers
Platform operated
Platform actuated traffic counters
3401725, 340168S, 307221R, G06F 314
Patent
active
040190404
ABSTRACT:
A system incorporating a cathode ray tube display device, a comparator circuit and a data recording media is utilized to continuously display measured parameters and selectively apply signals corresponding to the measured parameters for permanent recording when the measured parameters vary beyond predetermined limits. A delay type circuit is employed to provide permanent recording of signals occurring prior to the excursion of the measured parameter beyond the predetermined limits thus providing a basis for evaluating operating conditions existing prior to an unacceptable variation of a parameter beyond predetermined limits. The permanent recording of the measured parameter extends from a time prior to the occurrence of an out of limits condition, indicative of an abnormal operating condition, to a time following termination of the out of limits condition, additionally a multi-channel cathode ray tube display provides simultaneous display of individual traces representing a plurality of measured parameters wherein control circuits permit stationary display of some parameters while providing updating of information contained in other traces.
REFERENCES:
patent: 3093796 (1963-06-01), Westerfield
patent: 3307169 (1967-02-01), Beck
patent: 3406387 (1968-10-01), Werme
patent: 3585440 (1971-06-01), Lee et al.
patent: 3651511 (1972-03-01), Andrews et al.
patent: 3652999 (1972-03-01), Hjort et al.
patent: 3653027 (1972-03-01), Scheer
patent: 3662380 (1972-05-01), Cargile
Bartz C. T.
Lynch M. P.
Shaw Gareth D.
Westinghouse Electric Corporation
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