Available Technology

Sensor Signal Processing Using Cascade Coupled Oscillators

A broad class of sensors such as magnetic sensors (i.e., Superconducting quantum interference devices and fluxgate magnetometers), electric field sensors, and microelectromechanical systems gyroscopes are inherently nonlinear systems. At the core of many of these sensing applications is the need to discern minute electrical current changes. In principle, a device (such as this patented invention) can take advantage of a system nonlinearity to improve a sensing system's performance such as the detection of a minute electrical current or Voltage change.

Patent Abstract: 

A cascaded oscillator array includes a first oscillator array and a second oscillator array. The first oscillator array includes at least three oscillator elements coupled unidirectionally in a first ring Such that the first oscillator array outputs a first oscillating signal. Each of the at least three oscillator elements is coupled to receive a signal from a sensing element. The second oscillator array includes at least three oscillator elements coupled unidirectionally in a second ring Such that the second oscillator array outputs a second oscillating signal. A first number of the at least three oscillator elements of the first oscillator array is the same as a second number of the at least three oscillator elements of the second oscillator. Each oscillator element of the at least three oscillator elements of the second oscillator array is coupled to receive an output signal from a single oscillator element of the at least three oscillator elements of the first oscillator.

Reps: 
Patent Number: 
8994461
Technology Type(s): 
Sensor
Internal Laboratory Ref #: 
102215
Patent Status: 
Issued
Patent Issue Date: 
March 31, 2015
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