FIELD: informational and measuring equipment, in particular - methods for measuring electric voltage.
SUBSTANCE: method for integrating analog-digital transformation of voltage is based on integration of difference of input voltage and intermediate signal, received by means of impulse modulation of integral of aforementioned difference, and adding of intermediate signals during adjacent transformation cycles, special because digital equivalent of output value of integrator in time moment, appropriate for boundary between two cycles of transformation, multiplied by constant coefficient, is subtracted from result of transformation received in previous cycle, and added to result, received in current cycle, while aforementioned constant coefficient is selected from condition for compensating error from edge effects.
EFFECT: increased precision of transformation of voltage to code due to decreased component of methodic error from edge effects; creation of digital measuring tools and devices for transformation of analog signal to code, providing for measuring of constant and alternating voltages with lesser error and simplification of circuit realization compared to existing methods.
7 dwg
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