Event-logging system

Details Event-logging system Event-logging system

G - Physics

01

R

340/91

G01R 13/02 (2006.01) G06F 17/40 (2006.01)

Patent

CA 1179412

49 49,278 ABSTRACT OF THE DISCLOSURE A solid-state event-logging system records the occurrence of specified events in a removable, solid- state, memory cartridge. Counters continuously count pulses produced by a plurality of electrical energy meas- uring devices. Sample values of the continuous counts are produced and input to a microprocessor wherein each sample value has the previous sample value subtracted therefrom. The difference is added to an interval sum stored in a random access memory. The interval sums, together with real time information produced by a clock, are input to the memory cartridge according to a predetermined format. The clock is maintained in synchronization with the fre- quency of the line voltage by the microprocessor.

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