Research Article
A Photoplethysmography Melanin Evaluation System by Modified Boltzmann Transport Equation (BTE)
Table 1
Comparison between conventional devices and device in this study.
| | | Skintel melanin reader | MU99 | Soft plus | Physiskin (this study) |
| | Wavelength (nm) | 640
700
910 | 568
660
870 | 660
875 | 640
700
940 |
| | Power consumption | — | 3.6 W | 60 W | 0.2 W |
| | Index range | 0–99 | 0–999 | 0–100 | 0–999 |
| | Measurement time | 1 sec | 1 sec | — | 1 sec |
| | Measure hemoglobin | ✗ | ✓ | ✗ | ✓ |
| | Measure melanin | ✓ | ✓ | ✓ | ✓ |
|
|
