System and method for a self-calibrating non-invasive sensor
First Claim
Patent Images
1. A sensor system comprising:
- a probe comprising a light source and a sensor, the sensor having a probe calibration output and a calibrated probe output, wherein the probe outputs are responsive to incident light radiation received from the light source and the probe calibration output is generated prior to taking a physiological measurement;
a calibration circuit in signal communication with the probe and comprising an electronic calibration output responsive to the probe calibration output, and a calibrated electronic output responsive to the calibrated probe output;
a controller in signal communication with the calibration circuit and comprising a lookup table having a wavelength value output responsive to the electronic calibration output and the calibrated electronic output, wherein the wavelength value output is determined in real-time; and
, a measuring device comprising an output generated in response to the wavelength value output.
9 Assignments
0 Petitions
Accused Products
Abstract
A non-invasive emitter-photodiode sensor which is able to provide a data-stream corresponding to the actual wavelength of light emitted thereby allowing calibration of the sensor signal processing equipment and resulting in accurate measurements over a wider variation in emitter wavelength ranges.
86 Citations
20 Claims
-
1. A sensor system comprising:
-
a probe comprising a light source and a sensor, the sensor having a probe calibration output and a calibrated probe output, wherein the probe outputs are responsive to incident light radiation received from the light source and the probe calibration output is generated prior to taking a physiological measurement;
a calibration circuit in signal communication with the probe and comprising an electronic calibration output responsive to the probe calibration output, and a calibrated electronic output responsive to the calibrated probe output;
a controller in signal communication with the calibration circuit and comprising a lookup table having a wavelength value output responsive to the electronic calibration output and the calibrated electronic output, wherein the wavelength value output is determined in real-time; and
,a measuring device comprising an output generated in response to the wavelength value output. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A sensor system comprising:
-
a probe comprising a light source and a sensor, the sensor having a probe calibration output and a calibrated probe output, wherein the probe outputs are responsive to incident light radiation received from the light source and the probe calibration output is generated prior to taking a physiological measurement;
a calibration circuit in signal communication with the probe and comprising an electronic calibration output responsive to the probe calibration output, and a calibrated electronic output responsive to the calibrated probe output;
a controller in signal communication with the calibration circuit and comprising a software-based logic responsive to the electronic calibration output and the calibrated electronic output to produce a wavelength value output; and
,a measuring device comprising an output generated in response to the wavelength value output. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A sensor system comprising:
-
a probe comprising a light source and a sensor, the sensor having a probe calibration output and a calibrated probe output, wherein the probe outputs are responsive to incident light radiation received from the light source and the probe calibration output is generated prior to taking a physiological measurement;
a calibration circuit in signal communication with the probe and comprising an electronic calibration output responsive to the probe calibration output, and a calibrated electronic output responsive to the calibrated probe output;
a controller in signal communication with the calibration circuit and comprising logic responsive to the electronic calibration output to provide an output to adjust light source temperature and to produce a wavelength value output that is determined in real-time; and
,a measuring device comprising an output generated in response to the wavelength value output. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A sensor system comprising:
-
a probe comprising a light source and a sensor, the sensor having a probe calibration output and a calibrated probe output, wherein the probe outputs are responsive to incident light radiation received from the light source and the probe calibration output is generated prior to taking a physiological measurement;
a calibration circuit in signal communication with the probe and comprising an electronic calibration output responsive to the probe calibration output, and a calibrated electronic output responsive to the calibrated probe output;
a controller in signal communication with the calibration circuit and comprising logic responsive to the electronic calibration output and the calibrated electronic output to produce a wavelength value output that is used to determine, in real-time, the physiological measurement. - View Dependent Claims (17, 18, 19, 20)
-
Specification