Sensor calibration system and method

A method comprising:

• receiving a first electrical output generated by a sensor while the sensor is submitted to a first input condition, the first electrical output representing a lower limit of a measurement range of the sensor;
• receiving a second electrical output generated by the sensor while the sensor is submitted to a second input condition, the second electrical output representing an upper limit of the measurement range of the sensor;
• obtaining a first reference value that corresponds to the lower limit of the measurement range and a second reference value that corresponds to the upper limit of the measurement range;
• determining a drift function of the sensor based on a value of the first electrical output, a value of the second electrical output, the first reference value, and the second reference value, wherein the drift function is based on a slope for a first offset value and a second offset value, and wherein the first offset value is based on the first reference value and the second reference value, and the second offset value is based on the first electrical output and the second electrical output;
• inputting a value of a raw electrical output generated by the sensor into the drift function to determine an adjusted value of the raw electrical output, wherein a percent change of the first offset value or the adjusted value is within a designated threshold value to calibrate the sensor;
• and
• determining a measured value of a property monitored by the sensor by inputting the adjusted value of the raw electrical output into a second function.

A sensor calibration system comprising:

• a controller disposed onboard a vehicle and operably connected to a sensor onboard the vehicle, the controller comprising one or more processors and configured to:
• receive a first electrical output generated by the sensor indicative of a property of the vehicle or a property of a component of the vehicle, the first electrical output received from the sensor while the sensor is submitted to a first input condition, the first electrical output representing a lower limit of a measurement range of the sensor;
• receive a second electrical output generated by the sensor while the sensor is submitted to a second input condition, the second electrical output representing an upper limit of the measurement range of the sensor;
• obtain a first reference value that corresponds to the lower limit of the measurement range and a second reference value that corresponds to the upper limit of the measurement range;
• determine a drift function of the sensor based on a value of the first electrical output, a value of the second electrical output, the first reference value, and the second reference value, wherein the drift function is based on a slope for a first offset value and a second offset value, and wherein the first offset value is based on the first reference value and the second reference value, and the second offset value is based on the first electrical output and the second electrical output;
• input a value of a raw electrical output generated by the sensor into the drift function to determine an adjusted value of the raw electrical output, wherein a percent change of the first offset value or the adjusted value is within a designated threshold value to calibrate the sensor;
• and
• determine a measured value of the property monitored by the sensor by inputting the adjusted value of the raw electrical output into a second function.