ELECTRONIC MEASURING SYSTEM

摘要

The electronic measuring system includes a transducer to develop an analog signal which is a function of a value to be measured, a reference signal generating unit, a first comparison unit to provide a start signal when a reference signal from the reference generating unit reaches a coincidence point with the system ground potential and a second comparison unit to provide a stop signal when the reference and analog signals reach a coincidence point. All of these units are powered from a single power source and referenced to ground potential. A counter system receives and registers pulses in the interval between the start and stop signals and includes a first counter which is preset below zero and a net counter which is activated to count pulses after the first counter reaches zero. A ramp reset circuit is provided to actively drive the reference signal from the reference generating unit to a quiescent state when the stop signal is provided.