| 摘要 |
A smart temperature sensing device (10) includes a sensor (16) and a memory (25) on a sensor unit (14). The memory contains a plurality of custom nonlinear calibration coefficients which uniquely characterize the sensor (16). A temperature system includes the smart temperature sensing device (10) and a FSAU (12) having a processor (28) which downloads the calibration coefficients and utilizes them in converting electrical signals from the sensor (16) into temperature values that represent the temperature at the sensor (16). A method of calibrating a sensor (16) includes measuring an output signal of the sensor (16) over a temperature range, thereby obtaining a plurality of paired data points. The paired data points are used in a curve-fitting algorithm to obtain coefficients to a polynomial that characterizes the nonlinear temperature-voltage relationship of the sensor (16). The coefficients are stored within the memory (25) until downloaded by the processor (28) for use in signal conversion.
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