基于Arduino的心跳监测器

发布时间：2021-05-03

分享到：

基于Arduino的心跳监测器

发布时间：2021-05-03

分享到：

通过Arduino制作心跳/脉搏监测设备，对心跳进行检查。

视频演示：

硬件部件：

Arduino UNO
脉搏传感器
LCD（16*2）
单圈电位器-10kΩ
电阻-330Ω
LED-绿色
跳线

电路图：

代码：

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g //
// HeartBeat / Pulse Monitoring Device //
// By MOHD SOHAIL //
#define USE_ARDUINO_INTERRUPTS true //为大多数准确的BPM数学设置低级中断
#include <PulseSensorPlayground.h> //包含PulseSensorPlayground库
#include <LiquidCrystal.h> //包括LiquidCrystal库

LiquidCrystal lcd(2, 3, 8, 9, 10, 11); //用“ lcd”初始化LiquidCrystal。lcd（RS，E，D4，D5，D6，D7）

const int PulseWire = A0; //PulseSensor PURPLE WIRE连接到ANALOG PIN 0
const int LED_3 = 13; //LED检测心脏何时跳动。LED连接到Arduino UNO的PIN 3
int Threshold = 550; //确定哪个信号“算作一个拍子”以及哪个信号可以忽略
//使用“入门项目”来微调阈值，使其超出默认设置
//否则保留默认的“ 550”值
//----------------------------------------在LCD上画“心”.
/*
heart4 heart5
=== ===

= 00011 11000 00011 11000 = 11 11 11 11
00111 11100 00111 11100 111 111 111 111
01111 11110 01111 11110 1111 1111 1111 1111
11111 11111 11111 11111 11111 11111 11111 11111
heart3 11111 11111 11111 11111 heart6 11111 11111 11111 11111
11111 11111 11111 11111 11111 11111 11111 11111
11111 11111 11111 11111 11111 11111 11111 11111
= 01111 11111 11111 11110 = 1111 11111 11111 1111
------->
= 00011 11111 11111 11000 = 11 11111 11111 11
00001 11111 11111 10000 1 11111 11111 1
00000 11111 11111 00000 11111 11111
heart2 00000 11111 11111 00000 heart7 11111 11111
00000 01111 11110 00000 1111 1111
00000 00111 11100 00000 111 111
00000 00011 11000 00000 11 11
= 00000 00001 10000 00000 = 1 1

=== ===
heart1 heart8

byte heart1[8] = {B11111, B11111, B11111, B11111, B01111, B00111, B00011, B00001};
byte heart2[8] = {B00011, B00001, B00000, B00000, B00000, B00000, B00000, B00000};
byte heart3[8] = {B00011, B00111, B01111, B11111, B11111, B11111, B11111, B01111};
byte heart4[8] = {B11000, B11100, B11110, B11111, B11111, B11111, B11111, B11111};
byte heart5[8] = {B00011, B00111, B01111, B11111, B11111, B11111, B11111, B11111};
byte heart6[8] = {B11000, B11100, B11110, B11111, B11111, B11111, B11111, B11110};
byte heart7[8] = {B11000, B10000, B00000, B00000, B00000, B00000, B00000, B00000};
byte heart8[8] = {B11111, B11111, B11111, B11111, B11110, B11100, B11000, B10000};
//----------------------------------------

int Instructions_view = 500; //等待时间以在LCD上显示指令的变量

PulseSensorPlayground pulseSensor; //创建PulseSensorPlayground对象的实例，称为“ pulseSensor”

void setup() {
Serial.begin(9600);//以一定速度设置串行通信
lcd.begin(16, 2); //初始化LCD屏幕的界面，并指定显示器的尺寸（宽度和高度）


lcd.createChar(1, heart1);
lcd.createChar(2, heart2);
lcd.createChar(3, heart3);
lcd.createChar(4, heart4);
lcd.createChar(5, heart5);
lcd.createChar(6, heart6);
lcd.createChar(7, heart7);
lcd.createChar(8, heart8);



lcd.setCursor(0,0);
lcd.print("Heart Beat/Pulse");
lcd.setCursor(0,1);
lcd.print(" Monitoring EIF ");
delay(2000);

pulseSensor.analogInput(PulseWire);
pulseSensor.blinkOnPulse(LED_3); //-->用心跳自动神奇地使Arduino的LED闪烁
pulseSensor.setThreshold(Threshold);

if (pulseSensor.begin()) {
Serial.println("We created a pulseSensor Object !"); //在Arduino上电或Arduino重置时打印一次
}

delay(2000);
lcd.clear();
}

void loop() {
int myBPM = pulseSensor.getBeatsPerMinute(); //在pulseSensor对象上调用函数，该函数将BPM作为“ int”返回。“ myBPM”现在保留此BPM值

if (Instructions_view < 500) {
Instructions_view++;
}

if (Instructions_view > 499) {
lcd.setCursor(0,0);
lcd.print("Put your finger ");
lcd.setCursor(0,1);
lcd.print(" on the sensor ");
delay(1000);
lcd.clear();
delay(500);
}
if (pulseSensor.sawStartOfBeat()) { //如果测试为“真”，则下面的条件将被执行
Serial.println(" A HeartBeat Happened ! "); //打印一条消息“发生心跳”
Serial.print("BPM: "); //打印短语“ BPM：”
Serial.println(myBPM); //->在myBPM中打印值

lcd.setCursor(1,1);
lcd.write(byte(1));
lcd.setCursor(0,1);
lcd.write(byte(2));
lcd.setCursor(0,0);
lcd.write(byte(3));
lcd.setCursor(1,0);
lcd.write(byte(4));
lcd.setCursor(2,0);
lcd.write(byte(5));
lcd.setCursor(3,0);
lcd.write(byte(6));
lcd.setCursor(3,1);
lcd.write(byte(7));
lcd.setCursor(2,1);
lcd.write(byte(8));

lcd.setCursor(5,0);
lcd.print("Heart Rate");
lcd.setCursor(5,1);
lcd.print(": ");
lcd.print(myBPM);
lcd.print(" ");
lcd.print("BPM ");

Instructions_view = 0;
}

delay(20); //在一个简单的草图中考虑了最佳实践
}