Electronic sensor with signal conditioning
First Claim
1. A method for signal conditioning in an electronic sensor having a sensing element, the sensing element generating a first signal and a second signal, the method comprising the steps of:
- receiving the first signal from the sensing element, the first signal having a frequency at an event;
sampling the second signal from the sensing element based on the frequency of the event, the second signal having a plurality of components, one of the plurality of components being a first component of interest;
generating a synchronized second signal in a time domain, the second signal having the plurality of components;
generating complex data in a frequency domain from the synchronized second signal in the time domain;
determining the first component of interest from the complex data; and
normalizing the first component of interest using amplitude information from the first signal.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for extracting components from signals in an electronic sensor (50) having a sensing element (52). The sensing element (52) generates a first signal (60) and a second signal (62). The method comprises the steps of: receiving the first signal (60) from the sensing element (52), the first signal (60) having a frequency at an event; sampling the second signal (62) from the sensing element (52) based on the frequency of the event, the second signal (62) having a plurality of components, one of the plurality of components being a first component of interest (112, 114); generating a synchronized second signal (100) in a time domain, the second signal (62) having the plurality of components; generating complex data (110) in a frequency domain from the synchronized second signal (100) in the time domain; determining the first component of interest (112, 114) from the complex data (110); and normalizing the first component of interest (112, 114) using amplitude information from the first signal (60).
-
Citations
20 Claims
-
1. A method for signal conditioning in an electronic sensor having a sensing element, the sensing element generating a first signal and a second signal, the method comprising the steps of:
-
receiving the first signal from the sensing element, the first signal having a frequency at an event;
sampling the second signal from the sensing element based on the frequency of the event, the second signal having a plurality of components, one of the plurality of components being a first component of interest;
generating a synchronized second signal in a time domain, the second signal having the plurality of components;
generating complex data in a frequency domain from the synchronized second signal in the time domain;
determining the first component of interest from the complex data; and
normalizing the first component of interest using amplitude information from the first signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for conditioning an angular rate signal in a gyroscope sensor having a sensing element with a pair of proof masses, the method comprising the steps of:
-
receiving a first signal from the sensing element, the first signal representative of a first movement of the proof masses in a first plane;
receiving a second signal from the sensing element, the second signal representative of a second movement of the proof masses in a second plane;
sampling the second signal from the sensing element based on the frequency of the first signal;
generating a synchronized second signal in a time domain, the synchronized second signal including a plurality of components, one of the plurality of components being the angular rate;
generating complex data in a frequency domain from the synchronized second signal in the time domain, the complex data including the plurality of components;
determining the angular rate from the complex data; and
normalizing the first angular rate using amplitude information from the first signal. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A signal conditioning system in an electronic sensor, the system comprising:
-
a sensor element that reports a first signal and a second signal, the first signal having a frequency at an event;
a phase locked loop for receiving the first signal and determining the frequency of the event;
a signal sampler for receiving the second signal and generating a synchronized second signal in a time domain, the signal sampler capable of sampling the second signal based on the frequency of the event determined by the phase locked loop;
a spectrum analyzer for receiving the synchronized second signal in the time domain and generating complex data in a frequency domain;
a decoder for receiving the complex data in the frequency domain and generating a first component of interest, the first component of interest being a component of the complex data in the frequency domain;
a drive signal for driving the sensor element; and
a scaling unit that divides the first component of interest by a measured value of the oscillator amplitude to normalize the first component of interest. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification