Pulse
Blood vessels are elastic. When the heart contracts, the blood vessels dilate; when the heart relaxes, the vessels constrict.
Hemoglobin in the blood absorbs particular light. Therefore, when light is applied to human tissue, the passage of light varies according to the amount of blood. This change in light's flux can be used to measure the pulse.
How to use the Heart Pulse Detector
- Place your finger on the camera and make the entire camera screen red.
- This application uses the phenomenon that the color of the finger periodically changes according to the blood flow.
- Please press it lightly. If you press hard with your finger, blood will not flow and it would be hard to measure.
- Do not move a lot to stabilize the blood color graph.
Standard pulse
Elementary student: 80~90
Adult: 60~80
Senile: 60~70
Auxiliary tools to help measure pulse
You can print auxiliary tools that help measure pulse.
https://www.tinkercad.com/things/4lhncNsoAkZ