Trigonometric Functions in My Heart: Modeling PPG Pulses with Basic Trigonometric Functions

Each group needs:

• Personal computer, preferably running Windows software with the Snipping Tool installed
• Microsoft Excel
• MS-Excel PPG-Pulse-Analysis-GUI (XLSX) to analyze photoplethysmography
• CMS-50D Plus Fingertip Pulse Oximeter with mini USB interface and computer software assistant, available online or CONTEC CMS-P PC-based pulse oximeter blood oxygen SPO2 monitor+PC software+USB, available online
• • Note: in the event pulse oximeters are not available, use data from a database of PPG pulses + graph analysis worksheets in Excel. Shimmer, a company that produces wearable wireless sensing products, has sample Pulse PPG data available for download. Have students create a pulse amplitude vs time graph for 5 seconds of data.

To share with the entire class:

• Student Activity Guide (PDF), one per student
• Activity Pre-Assessment (PDF), one per student