I have a code for data acquisition n plotting from one sensor how do write the code for three sensors such that I plot three graphs of different color in same figure

2018 12 25
3 个回答
回答已采纳
更新时间：2020 5 7
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0 个投票

clear all
close all
clc;
a = arduino();
tmax = 50;
figure(1),
grid on,
title('pulse sensor Analog Voltage Real Time Data Graph')
xlabel ('Time (s)'), ylabel('Voltage');
axis([0 tmax+1 -0.5 5.5]);
k = 0;
v = 0;
t = 0;
tic
while toc<= tmax
k = k + 1;
v(k) = readVoltage(a,'A0');
t(k) = toc;
if k > 1
line([t(k-1) t(k)],[v(k-1) v(k)]);
drawnow;
end
end

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Amit Kadarmandalgi
Amit Kadarmandalgi 2018-12-25
#define USE_ARDUINO_INTERRUPTS true
#include <PulseSensorPlayground.h>
const int OUTPUT_TYPE = SERIAL_PLOTTER;
/*
Number of PulseSensor devices we're reading from.
*/
const int PULSE_SENSOR_COUNT = 3;
const int PULSE_INPUT0 = A0;
const int PULSE_BLINK0 = 13; // Pin 13 is the on-board LED
const int PULSE_FADE0 = 5;
const int PULSE_INPUT1 = A1;
const int PULSE_BLINK1 = 12;
const int PULSE_FADE1 = 11;
const int PULSE_INPUT2 = A2;
const int PULSE_BLINK2 = 10; // Pin 13 is the on-board LED
const int PULSE_FADE2 = 9;
const int THRESHOLD = 550; // Adjust this number to avoid noise when idle
/*
All the PulseSensor Playground functions.
We tell it how many PulseSensors we're using.
*/
PulseSensorPlayground pulseSensor(PULSE_SENSOR_COUNT);
void setup() {
Serial.begin(250000);
pulseSensor.analogInput(PULSE_INPUT0, 0);
pulseSensor.blinkOnPulse(PULSE_BLINK0, 0);
pulseSensor.fadeOnPulse(PULSE_FADE0, 0);
pulseSensor.analogInput(PULSE_INPUT1, 1);
pulseSensor.blinkOnPulse(PULSE_BLINK1, 1);
pulseSensor.fadeOnPulse(PULSE_FADE1, 1);
pulseSensor.analogInput(PULSE_INPUT2, 2);
pulseSensor.blinkOnPulse(PULSE_BLINK2, 2);
pulseSensor.fadeOnPulse(PULSE_FADE2, 2);
pulseSensor.setSerial(Serial);
pulseSensor.setOutputType(OUTPUT_TYPE);
pulseSensor.setThreshold(THRESHOLD);
// Now that everything is ready, start reading the PulseSensor signal.
if (!pulseSensor.begin()) {
for (;;) {
// Flash the led to show things didn't work.
digitalWrite(PULSE_BLINK0, LOW);
delay(50);
digitalWrite(PULSE_BLINK0, HIGH);
delay(50);
}
}
}
void loop() {
delay(200);
// write the latest sample to Serial.
pulseSensor.outputSample();
for (int i = 0; i < PULSE_SENSOR_COUNT; ++i) {
if (pulseSensor.sawStartOfBeat(i)) {
pulseSensor.outputBeat(i);
}
}
}
anil simsek
anil simsek 2020-5-6
I have Arduino code, I want to draw it instantly in matlab. Can you help me
Walter Roberson
Walter Roberson 2020-5-7
The frameworks people have posted should work, provided that you do not need more than about 40 Hz. (But I do recommend animatedline() instead of continually doing line())

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更多回答（2 个）

Walter Roberson
Walter Roberson 2018-12-25

0 个投票

line() can accept a 'color' option.
However, it is inefficient to draw a line between every pair of points. You should look at animatedline() which permits you to addpoints()
Amit Kadarmandalgi
Amit Kadarmandalgi 2018-12-25

0 个投票

clear all
close all
clc;
a = arduino();
tmax = 50;
figure(1),
grid on,
title('pulse redings')
xlabel ('Time (s)'), ylabel('Voltage');
axis([0 tmax+1 -0.5 5.5]);
c= 0;
v= 0;
p=0;
k=0;
t = 0;
tic
while toc<= tmax
c = c + 1;
v(c) = readVoltage(a,'A0');
w(c) = readVoltage(a,'A1');
x(c) = readVoltage(a,'A2');
t(c) = toc;
if c > 1
line([t(c-1) t(c)],[v(c-1) v(c)],'color','blue');
hold on
line([t(c-1) t(c)],[p(c-1) p(c)],'color','red');
hold on
line([t(c-1) t(c)],[k(c-1) k(c)],'color','green');
drawnow;
end
end

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