Sensor arrays based on electronic oscillators

Details Sensor arrays based on electronic oscillators Sensor arrays based on electronic oscillators

G - Physics

01

M

G01M 13/00 (2006.01) G01D 5/12 (2006.01) G01D 5/243 (2006.01) G01M 15/00 (2006.01)

Patent

CA 2511272

A sensor array for measuring various parameters in a machine environment, the sensor array comprising a number of oscillators, each of the oscillators comprising a feedback network, an amplifier and a limiter being connected together in a loop. The feedback network has a frequency which varies with the parameters to be measured. The amplifier consumes a current from a current supply and in cooperation with the feedback network produces a signal that alternates at the natural frequency of the feedback network. The limiter limits the amplitude of the signal within a predetermined amplitude range. All of the signals from the oscillators are multiplexed onto the output of the sensor array. Frequency analysis may then used to isolate the individual readings from each of the oscillators.

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