| 摘要 |
<p>A ring to be worn on the finger, in which computing device and electronics 10 detect the electrical potential between contacts 1 and 3 in order to measure electro cardio activity of the heart when the user touches 3 with the non-ring wearing hand and where infra-red emitting LED 5 emits light via the finger flesh 6 to measure absorption of light via detector 7, the absorption being used to measure heart activity. The computing device calculates the heart rate and heart rate variability using the data from both electro cardio measures and flow rate measures by combining both sets of data available as well as using time dependent differences in measured heart activity to derive an estimate of systolic blood pressure that is further adjusted by environmental and personal factors measured using other devices such as an accelerometer.</p> |
