Array physiological detection system
A physiological detection device includes system including a first array PPG detector, a second array PPG detector, a display and a processing unit. The first array PPG detector is configured to generate a plurality of first PPG signals. The second array PPG detector is configured to generate a plurality of second PPG signals. The display is configured to show a detected result of the physiological detection system. The processing unit is configured to convert the plurality of first PPG signals and the plurality of second PPG signals to a first 3D energy distribution and a second 3D energy distribution, respectively, and control the display to show an alert message.
1. A physiological detection system, comprising:
a first array photoplethysmography (PPG) detector, comprising a plurality of first pixel areas and configured to be attached to a first tissue area of a body to correspondingly generate a plurality of first PPG signals;
a second array PPG detector, comprising a plurality of second pixel areas and configured to be attached to a second tissue area, different from the first tissue area, of the body to correspondingly generate a plurality of second PPG signals;
a display configured to show a detected result of the physiological detection system; and
a processing unit configured to
convert the plurality of first PPG signals and the plurality of second PPG signals to a first 3D energy distribution and a second 3D energy distribution, respectively;
compare the first 3D energy distribution and the second 3D energy distribution with an energy threshold,
calculate a first area of the first 3D energy distribution having energy amplitudes larger than the energy threshold and a second area of the second 3D energy distribution having energy amplitudes larger than the energy threshold, and
when a variation of a difference between the first area and the second area is larger than a variation threshold, control the display to show an alert message indicating that superficial microcirculations at the first and second tissue areas of the body are different indicating the superficial microcirculations at one of the first and second tissue areas has become worse.
2. The physiological detection system as claimed in claim 1 , wherein
the first array PPG detector comprises:
a first light source module configured to irradiate light of a first wavelength on the first tissue area; and
a first photosensitive array configured to detect outgoing light from the first tissue area and output the plurality of first PPG signals; and
the second array PPG detector comprises:
a second light source module configured to irradiate light of the first wavelength on the second tissue area; and
a second photosensitive array configured to detect outgoing light from the second tissue area and output the plurality of second PPG signals.
3. The physiological detection system as claimed in claim 2 , wherein the first wavelength is between 500 nm and 550 nm.
4. The physiological detection system as claimed in claim 3 , wherein the processing unit is further configured to identify an arc-like pattern in the first 3D energy distribution and the second 3D energy distribution to determine whether the first array PPG detector and the second PPG detector are worn properly.
5. The physiological detection system as claimed in claim 3 , wherein the first tissue area is at a hand of a user and the second tissue area is at a leg of the user.
6. The physiological detection system as claimed in claim 1 , wherein the processing unit is integrated in the first array PPG detector or the second array PPG detector.
7. The physiological detection system as claimed in claim 4 , wherein the unit processor is further configured to monitor variations of the first 3D energy distribution and the second 3D energy distribution after the arc-like patterns in both the first 3D energy distribution and the second 3D energy distribution are confirmed, respectively.
8. The physiological detection system as claimed in claim 4 , wherein the first 3D energy distribution and the second 3D energy distribution respectively contain a magnitude distribution of magnitudes of energy values of the first and second pixel areas, and each of the magnitudes represents an individual spectral energy at a current heartbeat frequency.
9. The physiological detection system as claimed in claim 1 , wherein the processing unit is further configured to
identify an arc-like pattern in each of the first 3D energy distribution and the second 3D energy distribution to determine whether the first array PPG detector and the second PPG detector are worn properly, and
after the arc-like patterns in both the first 3D energy distribution and the second 3D energy distribution are confirmed, respectively,
consider the first 3D energy distribution and the second 3D energy distribution as containing valid data, and
continuously monitor variations of the first 3D energy distribution and the second 3D energy distribution with time.
10. A physiological detection system, comprising:
a first array photoplethysmography (PPG) detector, comprising a plurality of first pixel areas and configured to be attached to a first tissue area of a body to correspondingly generate a plurality of first PPG signals;
a second array PPG detector, comprising a plurality of second pixel areas and configured to be attached to a second tissue area, different from the first tissue area, of the body to correspondingly generate a plurality of second PPG signals;
a display configured to show a detected result of the physiological detection system; and
a processing unit configured to
convert the plurality of first PPG signals and the plurality of second PPG signals to a first 3D energy distribution and a second 3D energy distribution, respectively;
compare the first 3D energy distribution and the second 3D energy distribution with an energy threshold,
calculate a first area of the first 3D energy distribution having energy amplitudes larger than the energy threshold and a second area of the second 3D energy distribution having energy amplitudes larger than the energy threshold, and
when a variation of a ratio between the first area and the second area exceeds a variation threshold, control the display to show an alert message indicating that superficial microcirculations at the first and second tissue areas of body are different indicating the superficial microcirculations at one of the first and second tissue areas has become worse.
11. The physiological detection system as claimed in claim 10 , wherein
the first array PPG detector comprises:
a first light source module configured to irradiate light of a first wavelength on the first tissue area; and
a first photosensitive array configured to detect outgoing light from the first tissue area and output the plurality of first PPG signals; and
the second array PPG detector comprises:
a second light source module configured to irradiate light of the first wavelength on the second tissue area; and
a second photosensitive array configured to detect outgoing light from the second tissue area and output the plurality of second PPG signals.
12. The physiological detection system as claimed in claim 11 , wherein the first wavelength is between 500 nm and 550 nm.
13. The physiological detection system as claimed in claim 12 , wherein the processing unit is further configured to identify an arc-like pattern in the first 3D energy distribution and the second 3D energy distribution to determine whether the first array PPG detector and the second PPG detector are worn properly.
14. The physiological detection system as claimed in claim 12 , wherein the first tissue area is at a hand of a user and the second tissue area is at a leg of the user.
15. The physiological detection system as claimed in claim 10 , wherein the processing unit is integrated in the first array PPG detector or the second array PPG detector.
16. The physiological detection system as claimed in claim 13 , wherein the processing unit is further configured to monitor variations of the first 3D energy distribution and the second 3D energy distribution after the arc-like patterns in both the first 3D energy distribution and the second 3D energy distribution are confirmed, respectively.
17. The physiological detection system as claimed in claim 13 , wherein the first 3D energy distribution and the second 3D energy distribution respectively contain a magnitude distribution of magnitudes of energy values of the first and second pixel areas, and each of the magnitudes represents an individual spectral energy at a current heartbeat frequency.
18. The physiological detection system as claimed in claim 10 , wherein the processing unit is further configured to
identify an arc-like pattern in each of the first 3D energy distribution and the second 3D energy distribution to determine whether the first array PPG detector and the second PPG detector are worn properly, and
after the arc-like patterns in both the first 3D energy distribution and the second 3D energy distribution are confirmed, respectively,
consider the first 3D energy distribution and the second 3D energy distribution as containing valid data, and
continuously monitor variations of the first 3D energy distribution and the second 3D energy distribution with time.