Patent ID: 6154087
Filing Date: 2000-11-28
Classification: G01D

Abstract:
A sensor output compensation circuit for compensating for an output from a sensor containing a resistor whose resistance value changes with a physical quantity of an object to be measured, the circuit comprising:drive means for driving the sensor;temperature detection means for outputting an electric current which changes with temperature;first temperature-compensating-current generation means comprising a plurality of current generation circuits for generating electric currents depending on the electric current output from said temperature detection means; and a plurality of switches having respective ON and OFF states for passing and interrupting the output from each of said current generation circuits, said first temperature-compensating-current generation means outputting a sum of the electric currents generated by and being output from said current generation circuits and passing through those of said switches which are in the ON state; andfirst storage means for storing information about the ON and OFF states of each switch of said plurality of switches provided in said first temperature-compensating-current generation means wherein:a drive state of said sensor is changeable according to the output from said first temperature-compensating-current generation means.