A device for analog - digital - conversion of a measuring magnitude, the sensors arranged in brueckenschaltung is generated, in particular of strain gauges in a load cell

摘要

the deviation of (u, t) between measure (in) and the following kompensationsgru00f6u00dfe (uk, ik) is fed to a comparator (k), in the presence of this deviation of a binary control signal (ka) is. a microprocessor (cu) modified, in particular by increasing or decreased a coded value (sw) depending on the presence or absence of binary steuersignals (ka).a digital analog converter (dau) eventually leads corresponding to the coded value (sw), the kompensationsgru00f6u00dfe (uk, ik). advantageous between the vergleichspunkt (v) by measuring and kompensationsgru00f6u00dfe and komparatoreingang (ke), a regulator (r) ordered.with the aid of a further schaltmittelbaugruppe, the zero point offset and verstu00e4rkungsfehler the device are determined. the microprocessor controls the schaltmittelbaugruppe beneficial during kalibrierungsroutinen, and corrected for the purpose of meu00dfwertausgabe the encoded value (msw).