METHOD AND SYSTEM FOR DETECTING THE AGE, HYDRATION AND FUNCTIONAL STATES OF SENSORS USING ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

摘要

A method and program prevents a user from bypassing a limit placed on a specified operating life of a sensor by disconnecting and reconnecting the sensor. The present invention checks a characteristic of the sensor to see if the sensor is used prior to the connection of the sensor, and rejects the sensor if the sensor is determined to have been used before. The process of checking the characteristic of the sensor involves performing an Electrochemical Impedance Spectroscopy (EIS) procedure and calculating an impedance value. The impedance value can be compared to various threshold values for a variety of purposes including the determination of age, condition, hydration, and stabilization of the sensor.