| 摘要 |
The present invention relates to the form of a sensor module for measuring a photoplethysmogram (hereinafter, referred to as a "PPG") for removing motion artifacts and to a method, with aim of removing motion artifacts from the PPG signal output by a photoplethysmograph to improve the reliability of final acquired data. The present invention employs one PPG sensor module in which two sensors are arranged with back-to-back, to measure a PPG at one point and remove PPG motion artifacts measured at said one point. The thus-configured two or more sensor modules are arranged into an array or a matrix to remove motion artifacts when a PPG is measured at multiple parts of the surface of a human body. The present invention effectively removes motion artifacts when a PPG is measured to enable a reliable and constant PPG signal measurement, and to ultimately interpret the secondary biological information such as heart rate or stress caused by a variation in the heart rate. |
