Time-based temperature sensor system and method therefor

Details Time-based temperature sensor system and method therefor Time-based temperature sensor system and method therefor

1997-03-28

1999-05-04

Gutierrez, Diego

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374171, 702130, 377 25, 377 49, G01K 700

Patent

active

058995706

ABSTRACT:
A time-based digital temperature sensing system has a first oscillator which is temperature sensitive. The first oscillator has a temperature coefficient which allows the first oscillator to generate an output signal which varies linearly as a function of temperature. A second oscillator is provided and is used to generates a reference clock signal. The outputs from the first and the second oscillator are coupled to a timer. The timer has a clock input coupled to an output of the second oscillator and an enable input coupled to an output of the first oscillator. From these input signals, the timer generates a number indicative of a length of time the timer is enabled by the first oscillator. The number is proportional to a current temperature of a material that is being monitored by the temperature sensing system.

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