The presnt invention relates to a PPG signal processing device and method thereof. The PPG signal processing device has a PPG signal extracting unit extracting a PPG signal, a motion information extracting unit extracting an motion information during a period of execting the PPG signal, a first adaptive digital filter filtering an interference caused by motion artifacts, and a second adaptive digital filter extracting a cycle signal and increasing a signal to noise ratio of the cycle signal. A heartbeat signal is measured accurately based on the cycle signal processed by the second adaptive digital filter. Therefore, the PPG signal processing device applied to a wearable heatbeat detecting device provides an accurate heatbeat information.本發明係一種光體積變化描述波形的處理裝置及其方法,該處理裝置係包含由一光體積變化描述波形(PPG)訊號擷取單元擷取PPG訊號,並於擷取PPG訊號期間,以一運算資訊擷取單元擷取運動資訊,將該PPG訊號及運動資訊一併輸出至一第一可適性數位濾波單元,將運動偽影的干擾訊號自該PPG訊號中濾除,再將濾除後的PPG訊號輸出至一第二可適性數位濾波單元,以擷取該第二PPG訊號中的周期性訊號並提高周期性訊號的訊雜比,作為讀出精確的心跳訊號的依據。因此,本發明的PPG訊號處理裝置可應用於穿戴式心跳檢測裝置上,提供正確的心跳資訊。10‧‧‧PPG訊號擷取單元11‧‧‧第一帶通濾波器12‧‧‧第一正規化器20‧‧‧運動資訊擷取單元21‧‧‧第二直流準位調整單元22‧‧‧延遲電路30‧‧‧第一可適性數位濾波單元31‧‧‧第一誤差收斂係數自動調整單元32‧‧‧去極端值單元33‧‧‧第二帶通濾波器34‧‧‧第三正規化器40‧‧‧第二可適性數位濾波單元41‧‧‧第二誤差收斂係數自動調整單元
