Apparatus for estimating concentration of biomarker, and electronic device including the same
An apparatus for estimating a concentration of a biomarker, may include: an inlet configured to receive the biomarker of an object; a chamber configured to store the biomarker; a sensor cartridge comprising a measurement channel provided as a porous substrate, the measurement channel comprising a probe which is disposed in each pore of the porous substrate and changes in color upon reaction with the biomarker; a light source configured to emit light onto the measurement channel; a detector configured to detect the light incident from the measurement channel; and a processor configured to obtain color change information of the measurement channel based on the light detected by the detector, and estimate the concentration of the biomarker based on the color change information.
1 . An apparatus for estimating a concentration of a biomarker, the apparatus comprising:
an inlet configured to receive the biomarker of an object;
a chamber configured to store the biomarker;
an insertion portion in fluid communication with the chamber;
a sensor cartridge in the insertion position and into which the biomarker is introduced from the chamber and comprising a measurement channel provided as a porous substrate, the measurement channel comprising a probe which is disposed in each pore of the porous substrate and changes in color upon reaction with the biomarker;
a light source configured to emit light onto the measurement channel;
a detector configured to detect the light incident from the measurement channel; and
a processor configured to obtain color change information of the measurement channel based on the light detected by the detector, and estimate the concentration of the biomarker based on the color change information,
wherein the processor is further configured to:
set a reference absorbance; and
obtain a color change speed of the measurement channel based on a distance between a first position in the measurement channel at which the reference absorbance is detected and a second position, different from the first position, in the measurement channel at which the reference absorbance is detected, and a time difference between a first detection time of the first position and a second detection time of the second position.
2 . The apparatus of claim 1 , wherein the inlet comprises a hole provided to be contacted by the object, or a permeable membrane configured to selectively transmit the biomarker to be measured.
3 . The apparatus of claim 1 , wherein the insertion portion comprises a slot into which the sensor cartridge is inserted or from which the sensor cartridge is removed, and configured to guide the sensor cartridge to the chamber when the sensor cartridge is inserted into the slot.
4 . The apparatus of claim 3 , wherein the slot extends toward a side surface of the chamber.
5 . The apparatus of claim 3 , wherein the slot is provided above the chamber so that the sensor cartridge that is inserted into the slot is disposed above the chamber.
6 . The apparatus of claim 5 , wherein the processor is further configured to obtain a variation in absorbance of the measurement channel based on a quantity of light detected from the measurement channel and a quantity of light detected from a reference channel.
7 . The apparatus of claim 1 , wherein the porous substrate comprises at least one of silica, alumina, polymer, and molecular sieve.
8 . The apparatus of claim 1 , wherein the biomarker comprises at least one of acetone, ammonia, carbon dioxide, and hydrogen.
9 . The apparatus of claim 1 , wherein the processor is further configured to estimate a physiological status comprising at least one of nutrient intake status, metabolic status, exercise status, calorie intake, and calorie consumption.
10 . The apparatus of claim 9 , further comprising a display configured to display at least one of the concentration of the biomarker and the physiological status.
11 . The apparatus of claim 1 , further comprising at least one of a humidity sensor configured to measure humidity, and a temperature sensor configured to measure temperature.
12 . An apparatus for estimating a concentration of a biomarker, the apparatus comprising:
a sensor configured to be attached to an object and react with the biomarker, and comprising
a contact surface configured to be contacted by the object,
a sensor cartridge disposed above the contact surface and comprising a measurement channel provided as a porous substrate, the measurement channel comprising a probe which is disposed in each pore of the porous substrate and changes in color upon reaction with the biomarker, and
a hole provided at the contact surface and the sensor cartridge, to receive the biomarker;
a light source configured to emit light onto the sensor;
a detector configured to detect light incident from the sensor; and
a processor configured to obtain color change information of the sensor based on the detected light, and estimate the concentration of the biomarker based on the obtained color change information,
wherein the processor is further configured to:
set a reference absorbance; and
obtain a color change speed of the measurement channel based on a distance between a first position in the measurement channel at which the reference absorbance is detected and a second position, different from the first position, in the measurement channel at which the reference absorbance is detected, and a time difference between a first detection time of the first position and a second detection time of the second position.
13 . The apparatus of claim 12 , wherein the processor is further configured to obtain the color change speed of the measurement channel based on a first distance between the first position and the second position, and a second distance between a third position and a fourth position in the measurement channel, at each of which the reference absorbance is detected when the sensor cartridge reacts with the biomarker introduced through an outer edge of the sensor cartridge.
14 . The apparatus of claim 13 , wherein the processor is further configured to calculate a statistical value of the first distance and the second distance, and obtain the color change speed based on the statistical value of the first distance and the second distance.
15 . The apparatus of claim 12 , wherein the processor is further configured to measure a variation in absorbance of the measurement channel based on a quantity of light detected at a predetermined reference point of the sensor and a quantity of light detected from the measurement channel.
16 . The apparatus of claim 12 , further comprising a transparent cover surface disposed above the contact surface, wherein the transparent cover surface comprises marker lines formed so that at least one of a position of the measurement channel and the color change information is visually identified.
17 . An electronic device comprising:
an inlet provided to be contacted by an object, and through which a biomarker of the object is introduced;
a chamber configured to store the biomarker;
a sensor cartridge into which the biomarker is introduced from the chamber and comprising a measurement channel provided as a porous substrate, the measurement channel comprising a probe which is disposed in each pore of the porous substrate and changes in color upon reaction with the biomarker;
a slot configured to guide the sensor cartridge to the chamber when the sensor cartridge is inserted into the slot;
a light source configured to emit light onto the measurement channel;
a detector configured to detect the light incident from the measurement channel; and
a processor configured to obtain color change information of the measurement channel based on the light detected by the detector, and estimate a concentration of the biomarker based on the color change information,
wherein the processor is further configured to:
set a reference absorbance; and
obtain a color change speed of the measurement channel based on a distance between a first position in the measurement channel at which the reference absorbance is detected and a second position, different from the first position, in the measurement channel at which the reference absorbance is detected, and a time difference between a first detection time of the first position and a second detection time of the second position.