Method and circuit arrangement for determining an electric measurement value for a resistance element, preferably for determining an electric current that flows through the said resistance element

A method of determining an electrical measurement value for a resistance element, wherein the resistance element to be measured is connected in a circuit with further resistance elements within a resistance matrix having at least one row with a number of columns of resistance elements, the method which comprises the following steps, to be carried out in sequence:

• connecting an input side of a basic load resistance element, together with a corresponding column within the resistance matrix, to a measurement/supply unit and also simultaneously or subsequently to a common reference voltage line, to thereby form a common reference voltage from the measurement voltage of the measurement/supply unit, and connecting an output side of the basic load resistance element, together with a corresponding row within the resistance matrix, to a ground connection of the resistance matrix;
• connecting the input sides of all further resistance elements together with the respective columns to a first reference voltage and connecting an output side thereof, together with the respective rows, to a second reference voltage;
• disconnecting the resistance element to be measured from all electrical connections, connecting an input side of the resistance element, together with the respective column to the measurement/supply unit and simultaneously or subsequently to the common reference voltage line, and connecting an output side of the resistance element, together with the respective row, to the ground connection of the resistance matrix;
• disconnecting the basic load resistance element and connecting the input side of the basic load resistance element, together with the respective column to the first reference voltage and connecting the output side of the basic load resistance element, together with the respective row, to the second reference voltage;
• and
• determining with measurement/supply unit the electrical measurement value for the resistance element to be measured.