Patent ID: 6065346
Filing Date: 2000-05-23
Classification: G01L

Abstract:
A measurement system comprising:a sensor formed on a semiconductor on insulator structure, said sensor having a power input and an output, said sensor having an offset that is related to the time that power is applied to said input;a switch connected between a voltage and said sensor input;a controller having an input and an output, said input coupled to said sensor output, said controller output coupled to said switch; andmeans operative on said controller for:(a) closing said switch for a first period of time;(b) acquiring a first reading;(c) opening said switch for a second period of time wherein said second period of time is sufficient to allow said sensor to recover to an offset that existed at the beginning of said first period of time;(d) closing said switch for a third period of time with said third period of time equal to said first period of time; and(e) acquiring a second reading.