System and method for precision compensation for the nonlinear offset and sensitivity variation of a sensor with temperature
AssigneeIntegrated Sensor Solutions
InventorMohammad Yunus
Life of this patent
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Abstract
A method and system for calibrating a sensor is disclosed The method and system include receiving data relating to a plurality of temperature parameters and providing polynomial compensation of a temperature coefficient (TC). When providing polynomial compensation of the temperature coefficient, the method and system further include providing a first output and adding a second value to the first output. The first output is a distal temperature multiplied by a first value.
Claims16
A digital compensation circuit for calibrating a sensor comprising:
- an interface circuit for receiving data relating to a plurality of temperature parameters;
- and
- means coupled to the interface circuit for providing polynomial compensation of a temperature coefficient (TC), the polynomial compensation means including:
- means for providing a first output, the first output being a first value multiplied with a digitized temperature;
- and
- means coupled to the first output providing means and the interface circuit for adding a second value using the first output.
A digital compensation circuit for calibrating a sensor comprising:
- an interface circuit for receiving data relating to a plurality of temperature parameters;
- and
- first means coupled to the interface circuit for providing polynomial compensation of a first temperature coefficient (TC1), the first polynomial compensation means including means for providing a first outputs, the first output being a first value multiplied with a digitized temperature, and first adder or multiplier accumulator means coupled to the first output providing means and the interface circuit for adding a second value with the first output;
- and
- second means coupled to the interface circuit for providing polynomial compensation of a high order temperature coefficient (TC.sub.n), the second polynomial compensation means including means for providing a second output, the second output being a third value multiplied with the digitized temperature, and second adder or multiplier accumulator means coupled to the second output providing means and the interface circuit for adding a fourth value with the second output.
A method for calibrating a sensor comprising the steps of;
- (a) receiving data relating to a plurality of temperature parameters;
- and
- (b) providing polynomial compensation of a temperature coefficient (TC), the step of providing polynomial compensation including the steps of:
- (b1) providing a first output, the first output being a digital temperature multiplied by a first value;
- and
- (b2) adding a second value to the first output.
A method for calibrating a sensor comprising the steps of:
- a) receiving data relating to a plurality of temperature parameters;
- b) providing polynomial compensation of a first temperature coefficient (TC1), the step of providing polynomial compensation of the first temperature coefficient including the steps of:
- (b1) providing a first output, the first output being a digital temperature multiplied by a first value;
- and
- (b2) adding a second value to the first output;
- and
- c) providing polynomial compensation of a high order temperature coefficient (TC.sub.n), the step of providing polynomial compensation of the high order temperature coefficient including the steps of:
- (b1) providing a second output, the second output being a digital temperature multiplied by a third value;
- and
- (b2) adding a fourth value to the second output.
Dependencies are inferred from the claim text.