Pulse Oximeter Designs

Microchip has medical products geared toward medical applications, including pulse oximeters. The ability to measure heart rate and blood oxygen level is being added to consumer products. These measurements can be taken using pulse oximeters that are intended for home medical use and by integrated wrist-worn fitness activity trackers. A pulse oximeter is a device that uses a non-invasive method for measuring the oxygen saturation level of a person's blood, as well as their heart rate. LEDs in Microchip's pulse oximeter demonstration transmit two wavelengths of light through a finger to a photodetector. From this, the pulse oximeter demonstration can measure changing absorbance at each of the two wavelengths, process, and then filter the data to determine the blood oxygen saturation level and heart rate.

Resources

• Reference Design Files
• BOM: Pulse Oximeter Demo Board