| 摘要 |
The present disclosure provides a method of calibrating a sensor for use with an electronic device having an analog sensor interface with unknown input and output characteristics that includes connecting a sensor to the electronic device, receiving calibration data comprising a known calibration perturbation and a calibration voltage ratio for the sensor, applying a balancing voltage ratio across first and second arms of a resistive bridge of the unperturbed sensor, the balancing voltage ratio selected such that a response signal measured at a central node is zero, applying the calibration voltage ratio across the first and second arms and detecting a measured calibration response signal at a central node, and adjusting the input and output characteristics of the analog sensor interface based on a difference between the calibration voltage ratio and the balancing voltage ratio such that the measured calibration response signal is representative of the known calibration perturbation. |
