04679000 is referenced by 167 patents and cites 12 patents.

A bidirectional current-time integrator device comprises a shunt for connection in a circuit and an integrating circuit having inputs connected to opposite ends of the shunt through a switching device. The integrating circuit integrates an input signal from the shunt with time to produce a stream of pulses at a frequency proportional to the current with each pulse representing a given unit of current time. A bidirectional counter assembly counts the pulses from the integrating circuit in one direction when the current is in one direction, and in the opposite direction when the current reverses. The integrator circuit includes means for storing any partial unit of current time accumulated whenever the current direction changes and adding that partial unit to the subsequent accumulation of the signal when the current changes back to the original direction. The device may be used as a battery discharge state monitor.

Bidirectional current time integration device
Application Number
Publication Number
Application Date
June 20, 1985
Publication Date
July 7, 1987
Robert Clark
1341 Rosecrans St., San Diego, 92106
Frank D Gilliam
G01R 11/00
H02J 7/00
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