CS1262 is the latest high-end analog front-end (AFE) product for photoelectric plethysmography (PPG) signal acquisition launched by CHIPSEA. It is also the first "health measurement" sensor chip that adapts to the OpenHarmony ecosystem. The chip is based on OpenHarnony's full set of solutions from the underlying driver to the functional framework, algorithms, and upper layer applications. At the same time, it can not only be applied to heart rate detection, but also accurately measure the waveform details of each heartbeat, and provide health indicators such as blood oxygen, blood vessel elasticity, blood pressure, heart rate variability (HRV), respiratory system disease judgment, mental stress, fatigue state assessment, etc.