FIELD: physics.
SUBSTANCE: group of inventions relates to a method and a device for measuring a tissue change signal (for example, photoplethysmography signal (PPG)) without significant displacement of direct current or low-frequency (LF) bias, which usually limits accuracy of the sensor due to motion artefacts and/or requirements for dynamic range. Proposed solution is based on separation of PPG signal from said distortion.
EFFECT: separation of PPG signal from said distortion can be achieved by creating modulated signal PPG or by creating a differential signal PPG, as well as an optimized configuration of the sensor, which is configured to remove components of direct current or low-frequency components.
14 cl, 14 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SYSTEM FOR DETECTION OF GINGIVITIS, USING DIFFUSE REFLECTION SPECTROSCOPY | 2019 |
|
RU2783816C2 |
| LIGHT-RADIATING DEVICE FOR PHOTOSENSOR | 1991 |
|
RU2069418C1 |
| PORTABLE DEVICE AND METHOD FOR NON-INVASIVE MEASUREMENT OF BLOOD ELEMENTS | 2022 |
|
RU2793540C1 |
| OPTICAL SENSOR OF VITAL SIGNS | 2016 |
|
RU2720663C2 |
| MEASURING DEVICE FOR DETERMINING AT LEAST ONE BLOOD SAMPLE PARAMETER | 2010 |
|
RU2468355C1 |
| DEVICE FOR PHOTOPLETHYSMOGRAPHY | 2016 |
|
RU2703639C2 |
| DEVICE AND METHOD FOR DETERMINING VITAL SIGNS OF SUBJECT | 2014 |
|
RU2684044C1 |
| APPARATUS FOR NON-INVASIVE DETERMINATION OF CHEMICAL COMPONENTS OF BLOOD (VERSIONS) | 2008 |
|
RU2478197C2 |
| WEARABLE DEVICE WITH FUNCTION OF DETERMINING HEMOGLOBIN CONCENTRATION, METHOD AND SYSTEM FOR DETERMINING HEMOGLOBIN CONCENTRATION | 2023 |
|
RU2805810C1 |
| COLLECTION OF PERSONAL HEALTH DATA | 2012 |
|
RU2630349C2 |
