Heart rate visual
in
Integration and Hardware
•
10 months ago
I am working on a project for class using the Pulse Amped Sensor. The information collected from the sensor is sent from the arduino to processing and creates a continuous visual of the user's heart beat. I want to create a single frame visual of the heart beats over time. Is it possible to have the heart beat waveform repeat on the same frame instead of move to the next? I plan on wearing the pulse senor to an event and have it visually record my emotional response based on my heartrate. I want the processing sketch to record my heart rate over the course of the evening in a single frame. Is it possible to adapt the code to do this??
-Thanks in advance of any help or suggestions you may have.
/*
THIS PROGRAM WORKS WITH PulseSensorAmped_Arduino-xx ARDUINO CODE
THE PULSE DATA WINDOW IS SCALEABLE WITH SCROLLBAR AT BOTTOM OF SCREEN
PRESS 'S' OR 's' KEY TO SAVE A PICTURE OF THE SCREEN IN SKETCH FOLDER (.jpg)
MADE BY JOEL MURPHY AUGUST, 2012
*/
import processing.serial.*;
PFont font;
Scrollbar scaleBar;
Serial port;
int Sensor; // HOLDS PULSE SENSOR DATA FROM ARDUINO
int IBI; // HOLDS TIME BETWEN HEARTBEATS FROM ARDUINO
int BPM; // HOLDS HEART RATE VALUE FROM ARDUINO
int[] RawY; // HOLDS HEARTBEAT WAVEFORM DATA BEFORE SCALING
int[] ScaledY; // USED TO POSITION SCALED HEARTBEAT WAVEFORM
int[] rate; // USED TO POSITION BPM DATA WAVEFORM
float zoom; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
float offset; // USED WHEN SCALING PULSE WAVEFORM TO PULSE WINDOW
color eggshell = color(255, 253, 248);
int heart = 0; // This variable times the heart image 'pulse' on screen
// THESE VARIABLES DETERMINE THE SIZE OF THE DATA WINDOWS
int PulseWindowWidth = 490;
int PulseWindowHeight = 512;
int BPMWindowWidth = 180;
int BPMWindowHeight = 340;
boolean beat = false; // set when a heart beat is detected, then cleared when the BPM graph is advanced
void setup() {
size(700, 600); // Stage size **window size**
frameRate(100);
font = loadFont("Arial-BoldMT-24.vlw");
textFont(font);
textAlign(CENTER);
rectMode(CENTER);
ellipseMode(CENTER);
// Scrollbar constructor inputs: x,y,width,height,minVal,maxVal
scaleBar = new Scrollbar (400, 575, 180, 12, 0.5, 1.0); // set parameters for the scale bar
RawY = new int[PulseWindowWidth]; // initialize raw pulse waveform array
ScaledY = new int[PulseWindowWidth]; // initialize scaled pulse waveform array
rate = new int [BPMWindowWidth]; // initialize BPM waveform array
zoom = 0.75; // initialize scale of heartbeat window
// set the visualizer lines to 0
for (int i=0; i<rate.length; i++){
rate[i] = 555; // Place BPM graph line at bottom of BPM Window
}
for (int i=0; i<RawY.length; i++){
RawY[i] = height/2; // initialize the pulse window data line to V/2
}
// GO FIND THE ARDUINO
println(Serial.list()); // print a list of available serial ports
// choose the number between the [] that is connected to the Arduino
port = new Serial(this, Serial.list()[0], 115200); // make sure Arduino is talking serial at this baud rate
port.clear(); // flush buffer
port.bufferUntil('\n'); // set buffer full flag on receipt of carriage return
}
void draw() {
background(0);
noStroke();
// DRAW OUT THE PULSE WINDOW AND BPM WINDOW RECTANGLES
fill(eggshell); // color for the window background
rect(255,height/2,PulseWindowWidth,PulseWindowHeight);
rect(600,385,BPMWindowWidth,BPMWindowHeight);
// DRAW THE PULSE WAVEFORM
// prepare pulse data points
RawY[RawY.length-1] = (1023 - Sensor) - 212; // place the new raw datapoint at the end of the array
zoom = scaleBar.getPos(); // get current waveform scale value
offset = map(zoom,0.5,1,150,0); // calculate the offset needed at this scale
for (int i = 0; i < RawY.length-1; i++) { // move the pulse waveform by
RawY[i] = RawY[i+1]; // shifting all raw datapoints one pixel left
float dummy = RawY[i] * zoom + offset; // adjust the raw data to the selected scale
ScaledY[i] = constrain(int(dummy),44,556); // transfer the raw data array to the scaled array
}
stroke(48,139,206); // red is a good color for the pulse waveform
noFill();
beginShape(); // using beginShape() renders fast
for (int x = 1; x < ScaledY.length-1; x++) {
vertex(x+10, ScaledY[x]); //draw a line connecting the data points
}
endShape();
// DRAW THE BPM WAVE FORM
// first, shift the BPM waveform over to fit then next data point only when a beat is found
if (beat == true){ // move the heart rate line over one pixel every time the heart beats
beat = false; // clear beat flag (beat flag waset in serialEvent tab)
for (int i=0; i<rate.length-1; i++){
rate[i] = rate[i+1]; // shift the bpm Y coordinates over one pixel to the left
}
// then limit and scale the BPM value
BPM = min(BPM,200); // limit the highest BPM value to 200
float dummy = map(BPM,0,200,555,215); // map it to the heart rate window Y
rate[rate.length-1] = int(dummy); // set the rightmost pixel to the new data point value
}
// GRAPH THE HEART RATE WAVEFORM
stroke(250,0,0); // color of heart rate graph
strokeWeight(2); // thicker line is easier to read
noFill();
beginShape();
for (int i=0; i < rate.length-1; i++){ // variable 'i' will take the place of pixel x position
vertex(i+510, rate[i]); // display history of heart rate datapoints
}
endShape();
// DRAW THE HEART AND MAYBE MAKE IT BEAT
fill(250,0,0);
stroke(250,0,0);
// the 'heart' variable is set in serialEvent when arduino sees a beat happen
heart--; // heart is used to time how long the heart graphic swells when your heart beats
heart = max(heart,0); // don't let the heart variable go into negative numbers
if (heart > 0){ // if a beat happened recently,
strokeWeight(8); // make the heart big
}
smooth(); // draw the heart with two bezier curves
bezier(width-100,50, width-20,-20, width,140, width-100,150);
bezier(width-100,50, width-190,-20, width-200,140, width-100,150);
strokeWeight(1); // reset the strokeWeight for next time
// PRINT THE DATA AND VARIABLE VALUES
fill(eggshell); // get ready to print text
text("Pulse Sensor Amped Visualizer 1.1",245,30); // tell them what you are
text("IBI " + IBI + "mS",600,585); // print the time between heartbeats in mS
text(BPM + " BPM",600,200); // print the Beats Per Minute
text("Pulse Window Scale " + nf(zoom,1,2), 150, 585); // show the current scale of Pulse Window
// DO THE SCROLLBAR THINGS
scaleBar.update (mouseX, mouseY);
scaleBar.display();
//
} //end of draw loop
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