vinay y.n
Published © GPL3+

Seeed MR60BHA1: Presence, Breathing, and Heartbeat Sensing

Seeed MR60BHA1: Sense presence, breathing, and heartbeat with mmWave precision. Non-contact, low-power, and compact for smart homes, health

IntermediateFull instructions providedOver 1 day737
Seeed MR60BHA1: Presence, Breathing, and Heartbeat Sensing

Things used in this project

Hardware components

Seeed Studio MR60BHA1 60GHz mmWave Module - Respiratory Heartbeat Detection
×1
FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth)
DFRobot FireBeetle ESP32 IOT Microcontroller (Supports Wi-Fi & Bluetooth)
×1
I2C 16x2 Arduino LCD Display Module
DFRobot I2C 16x2 Arduino LCD Display Module
×1
Seeed Studio MLX90614
×1
IR Sensor Module
×1
Linear Regulator (7805)
Linear Regulator (7805)
×2
Bridge Rectifier Diode, Miniature
Bridge Rectifier Diode, Miniature
×1
Capacitor 470 µF
Capacitor 470 µF
×1
LED (generic)
LED (generic)
×1
MINI RELAY SPDT 5 PINS 12VDC 10A 120V CONTACT
TaydaElectronics MINI RELAY SPDT 5 PINS 12VDC 10A 120V CONTACT
×1
9V 1A Switching Wall Power Supply
9V 1A Switching Wall Power Supply
×1
Through Hole Resistor, 470 ohm
Through Hole Resistor, 470 ohm
×1
Resistor 4.75k ohm
Resistor 4.75k ohm
×1
DC Power Connector, Jack
DC Power Connector, Jack
×1
Buzzer
Buzzer
×1

Software apps and online services

Arduino IDE
Arduino IDE
Blynk
Blynk

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free
Solder Flux, Soldering
Solder Flux, Soldering

Story

Read more

Schematics

Schematic Diagram

Code

Project Code

Arduino
To compile the code use the appropriate Libraries.
#include "Arduino.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <Adafruit_MLX90614.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL3gy4Fq2LC"
#define BLYNK_TEMPLATE_NAME "Project"
#define BLYNK_AUTH_TOKEN "
char auth[] = "cxwnZjdeqqhWcGuObkEZ5OVt1WC_227g";
char ssid[] = "wifi";
char pass[] = "123456788";
Adafruit_MLX90614 mlx = Adafruit_MLX90614();
#define RXD2 16
#define TXD2 17
#include <60ghzbreathheart.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
BreathHeart_60GHz radar = BreathHeart_60GHz(&Serial2);
unsigned long delay_Intial = 0;
const long delay_interval = 1000;
unsigned long measure_Intial = 0;
const long measure_interval = 20000;
int Human_pesence_pin = 27;
int Human_presence;
int Heart_rate_measure_button_pin = 26;
int Heart_Button = 0;
int IR_Sensor_pin = 33;
int IR_Status;
int relay = 32;
int Buzzer = 25;
void _delay()
{
  delay_Intial = millis();
  while((millis() - delay_Intial) <= delay_interval)
  {
  }
}



void Measure_Breath_Heart_rate()
{
  radar.Breath_Heart();           //Breath and heartbeat information output
  if(radar.sensor_report != 0x00)
  {
    switch(radar.sensor_report)
    {
      case HEARTRATEVAL:
        Serial.print("Sensor monitored the current heart rate value is: ");
        Serial.print(radar.heart_rate, DEC);
        Serial.println();
        lcd.clear();
        lcd.setCursor(0,0);
        lcd.print("Heart Rate: ");
        lcd.print(radar.heart_rate);
        Blynk.virtualWrite(V0,radar.heart_rate);
        break;
      case BREATHVAL:
        Serial.print("Sensor monitored the current breath rate value is: ");
        Serial.print(radar.breath_rate, DEC);
        Serial.println();
        lcd.setCursor(0,1);
        lcd.print("Breath_rate: ");
        lcd.print(radar.breath_rate, DEC);
        Blynk.virtualWrite(V1,radar.breath_rate);
        break;
    }
  }
}

void human_presence()
{
  radar.HumanExis_Func();           //Human existence information output
  if(radar.sensor_report != 0x00){
    switch(radar.sensor_report){
      case BODYVAL:
        Serial.print("The parameters of human body signs are: ");
        Serial.println(radar.bodysign_val, DEC);
        Serial.println("----------------------------");
        if(radar.bodysign_val >=15)
        {
          Blynk.virtualWrite(V3,20);
          measure_Intial = millis();
          delay(1000);
          Blynk.virtualWrite(V3,0);
          while((millis() - measure_Intial) <= measure_interval)
          {
            digitalWrite(relay,HIGH);
            lcd.clear();
            lcd.setCursor(0,0);
            lcd.print("Presence Found");
            lcd.setCursor(0,1);
            lcd.print("Lights ON");
            _delay();
          }

          digitalWrite(relay,LOW);
          lcd.setCursor(0,1);
          lcd.print("Lights OFF");
          _delay();
        }
        break;
    }
  }
}

void HR_BR()
{
  measure_Intial = millis();
  while((millis() - measure_Intial) <= measure_interval)
  {
    Measure_Breath_Heart_rate();
  }
}

void Measure_IR_Temperature()
{
  Serial.print("*C\tObject = ");
  Serial.print(mlx.readObjectTempC());
  Serial.println("*C");
  lcd.clear();
  lcd.setCursor(0,1);
  lcd.print("Body Temp: ");
  lcd.print(mlx.readObjectTempC());
  Blynk.virtualWrite(V2,mlx.readObjectTempC());
  _delay();
}

void setup()
{
  Serial.begin(115200);//RX0,TX0 OF ESP32
  Serial2.begin(115200, SERIAL_8N1, RXD2, TXD2);//RX2,TX2 OF ESP32
  pinMode(Heart_rate_measure_button_pin,INPUT);
  pinMode(IR_Sensor_pin,INPUT);
  pinMode(Human_pesence_pin,INPUT);
  pinMode(relay,OUTPUT);
  pinMode(Buzzer,OUTPUT);
  Wire.begin();
  lcd.begin();
  lcd.backlight();
  mlx.begin();
  radar.ModeSelect_fuc(1);
  Blynk.begin(auth, ssid, pass);
}

void loop()
{
  Heart_Button = digitalRead(Heart_rate_measure_button_pin);
  IR_Status = digitalRead(IR_Sensor_pin);
  Human_presence = digitalRead(Human_pesence_pin);
  lcd.clear();
  digitalWrite(relay,LOW);
  digitalWrite(Buzzer,LOW);
  Blynk.virtualWrite(V0,0);
  Blynk.virtualWrite(V1,0);
  Blynk.virtualWrite(V2,0);
  Blynk.virtualWrite(V3,0);
  switch(IR_Status)
  {
    case 1:
      Measure_IR_Temperature();
      break;
    case 0:
      break;
      lcd.clear();
  }

  switch(Heart_Button)
  {
    case 1:
      digitalWrite(Buzzer,HIGH);
      _delay();
      digitalWrite(Buzzer,LOW);
      _delay();
      Serial.println("Heart_rate_monitoring_system_acitve");
      HR_BR();
      break;
  }

  switch(Human_presence)
  {
    case 1:
      Serial.println("Human_presence_detection_active");
      human_presence();
      break;
    case 0:
      digitalWrite(relay,LOW);
      break;
  }
  Blynk.run();
}

Credits

vinay y.n

vinay y.n

26 projects • 44 followers
An electronic product engineer with 8 years of experience in the field. The passion for electronics began as a hobby 11 years ago.

Comments

Related channels and tags
  • Blynk
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  • Internet of Things
  • Seeed Studio
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