BPM

Code of the Baby Pulse Monitor (BPM) CLI

Options

Python

From python BPM.py --help:

Usage: BPM.py [OPTIONS]

  Runs the data collection and calculations for the Baby Pulse Monitor

Options:
  -t, --time INTEGER       Total time to record data in seconds.  [default:
                           60]

  -c, --cycle INTEGER      How long each cycle takes before calculating BPM
                           [default: 5]

  -b, --brightness FLOAT   Percent brightness for the LED  [default: 0.85]
  -f, --frequency INTEGER  Data acquisition frequency.  [default: 20]
  -s, --save               save the data after processing
  -showp, --show-plot      Show the results of autocorrelation or FFT
  -p, --port TEXT          The port of the Arduino.  [default:
                           /dev/cu.usbmodem1101]

  --help                   Show this message and exit.

MATLAB

To use MATLAB, you need to install Arduino Support from MATLAB.

To run the program, open MATLAB and run the bpm.m file. Before running, make sure your parameters at the top of the file are correct.

Python Requirements

Pip Packages:

• click
• matplotlib
• numpy
• pyfirmata
• tkinter
• scipy

Python Arduino Set-up

1. Install Firmata onto Arduino

• Instructions can be found here.

2. Note the port used by the Arduino(ex: COM4)

Python Example command

If the port is COM4, you can run the following command

python BPM.py -p COM4 -f 20 -t 30

This will collect data for 30 seconds with a frequency of 20 Hz using port COM4.

If you ever need to quit, you can use CTRL+C.

Examples

Examples have been provided. To load test data, use examples/test.m', and change the data` variable in line 3 to the data file you want to analyze.