Pulse Oximeter Demonstration
dsPIC33FJ128GP Digital Signal Controller Family
The ability to measure heart rate and blood oxygen level is now 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 photo detector. 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.
|Products Included in Demo:|
|DSPIC33FJ128GP802 - Digital Signal Controller||Learn More||Buy Now|
|MCP4728 - Quad channel, 12-bit Digital-to-Analog Converter||Learn More||Buy Now|
|MCP1640 - Synchronous PFM/PWM Boost Regulator||Learn More||Buy Now|
|MCP6002 - Dual general-purpose op amp||Learn More||Buy Now|
Design Files Download
Pulse Oximeter Demo ‘C’ source code, application notes and schematics are available for this demo
This demo is not for sale. Please download the design files for your evaluation and prototype development.
- Measures heart rate
- Measures percent blood oxygen saturation level
- dsPIC33FJ128GP802 uses a 513th-order, digital-FIR, bandpass filter designed with Microchip's Digital Filter Design Tool
- Eliminates the need for an expensive Analog Front End (AFE) part
- Low overall BOM cost due to processing and filter integration
- Integrated PWM module drives the LCD display
Input and Filtered Data from Microchip's Pulse Oximeter Demonstration
Contact your local sales representative to see a working demonstration of the Pulse Oximeter demo.
Development Made Easy
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