Oxygen saturation is a very important physiological parameter for detecting diseases caused by the respiratory circulatory system. Many respiratory diseases are quickly reflected in the oximetry data. Therefore, oximetry has become the new "favorite" medical device after the epidemic.

So, in daily life, in order to understand our own health and prevent diseases caused by the respiratory and circulatory system, we can also choose to measure our own oxygen saturation.

Nowadays, most of the oximeters on the market still suffer from the problems of large size, inconvenience in carrying, inability to be used outside of specific places such as hospitals, lack of accuracy in recording, inability to record data in real time, etc. The market is also looking forward to the production of a new type of portable recording oximeter.

This pulse oximeter is a medical device that indirectly monitors blood oxygen saturation and pulse rate. Renesas introduces the highly integrated sensor OB1203, the industry's smallest optical biosensor module with a fully integrated biosensor for reflectivity light volume tracing.

It determines human heart rate, oxygen saturation (Sp02), respiration rate and heart rate variability with appropriate algorithms. The data is transferred to the MCU for system reporting via a 12C interface.

We have also optimized the application for limited space, and this design incorporates a compact low-power RL78/G13 microcontroller. Flexible docking of external BLE connections is also supported as a batch application.