Reactance type sensor including an excitation supply module uses a compensation based on a Pade approximation

摘要

Reactive sensor exhibits a linear response to the normal temperature fluctuations. Discloses a system and method for compensating for the temperature and non-linearity and / or dependent on the behavior of the reactive sensor to calibrate the post-compensation output signal associated with a known sample of the physical parameters under measurement. One embodiment includes a housing containing reactive moieties sensor, the reference timing and at least a monolithic integrated circuit. The integrated circuit, the temperature is adjusted by use of the coefficient detector for detecting a waveform generator for generating a sensor excitation signal, the sensor response for the combination of the physical parameters under measurement and the excitation signal, a programmed digital I include the Pade approximation nonlinearity compensation unit and compensation unit. Factor to calibrate the final output in addition to compensating for temperature sensitivity and nonlinearity. [Selection Figure 6