The Software

Published May 29, 2020 © GPL3+

Smart Bra

A bra that can predict the date of your next menstruation, keep track of your vitals, and connect to other devices to respond to your body.

IntermediateProtip20 hours710

Runner Up

Hacking Menopause

Things used in this project

Hardware components

NodeMCU ESP8266 Breakout Board

Maxim Integrated MAX30102 High-Sensitivity Pulse Oximeter and Heart-Rate Sensor for Wearable Health

This component is ideal because of its accuracy and compact size.

Felex Sensor

It was homemade.

Resistor 221 ohm

Software apps and online services

Arduino IDE

Angular + Ionic

Used for the Demo app.

Proteus

Used for the simulation of MAX30102 with NodeMCU 09.v.

Fritzing

Used for the Schematic.

Story

A brassiere is one of the most important parts of a woman's life. This product will make the lives of women going through menopause easier by keeping track of their vitals and understanding the needs of their bodies.

This product solves the problem of irregular periods, hot flashes, and detects certain future health problems in advance with the help of sensors fixed in the bra. There is not enough data on menopause and we will also be able to store data (with permission) for research in the field of the same.

This is a bra that provides more than just support!

The Hardware:

The Smart Bra consists of sensors embedded in the fabric that will keep track of important vitals. The bra currently monitors the heart rate, the body temperature, the cup size of the breast, and the respiration rate. Due to the Covid-19 lockdown, purchasing the components was not possible. Therefore, The MAX30102(heart rate and temperature sensor) was simulated using Proteus.

The simulation of the heart beat sensor with an Arduino Uno.

The flex sensor was made at home by following this existing project: https://www.hackster.io/SHAHIR_nasar/simple-homemade-flex-sensor-ff54f0

The flex sensors will be placed horizontally across each breast to monitor the cup size. The cup size of a woman increases right before the menstruation period. Based on existing research we know that the heart rate of the average woman is lower in the follicular phase and the body temperature is lower during ovulation. The respiration rate is also slower at the beginning of the cycle. These factors will help predict the exact date (and time after enough data is collected) of your period.

The heart rate sensor will be placed on top of the left breast for the best readings.

The DIY flex sensor

NodeMCU connected with the flex sensor

The Software:

The app will have three main features:

Devices: It allows other smart appliances and devices to sync with the app and perform certain tasks. Uses include being able to sync your Air Conditioner or thermostat to your app. In that way, every time you are about to have a hot flash or night sweat, the AC will turn on or adjust the temperature automatically.

Health: keep track of your vitals. It will also be able to use predictive models to warn the users of any possible health scares.

Calendar: It will predict your next menstrual period and keep track of your cycle.

1 / 3 • The Demo App

Schematics

Code

#include <Wire.h>
#include "MAX30105.h"
#include "spo2_algorithm.h"
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

MAX30105 particleSensor;

#define MAX_BRIGHTNESS 255

#if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__)
uint16_t irBuffer[100]; 
uint16_t redBuffer[100]; 
#else
uint32_t irBuffer[100]; 
uint32_t redBuffer[100];  
#endif

int32_t bufferLength; 
int32_t spo2;
int8_t validSPO2; 
int32_t heartRate; 
int8_t validHeartRate; 

byte pulseLED = 11; 
byte readLED = 13;

const int flexpin = D0; 
int flexarray[15];
//wifi credetials
char auth[] = "xxx";             
char ssid[] = "";
char pass[] = "";

//function to calculate avegare of flex values
int calcavgflex(int flexarray[]){
  float avgmin;
  long avgsum=0;
  for(int k=0;k<15; k++){
     avgsum+=flexarray[k];
     //Serial.println("\n");
     //Serial.print(avgsum);
     //Serial.println(" ");
  }
  avgmin=avgsum/15;
  return avgmin;
}
void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);

  pinMode(pulseLED, OUTPUT);
  pinMode(readLED, OUTPUT);

  // Initialize sensor
  if (!particleSensor.begin(Wire, I2C_SPEED_FAST))
  {
    Serial.println(F("MAX30105 was not found. Please check wiring/power."));
    while (1);
  }

  Serial.println(F("Attach sensor to finger with rubber band. Press any key to start conversion"));
  while (Serial.available() == 0) ;
  Serial.read();

  byte ledBrightness = 60; 
  byte sampleAverage = 4;
  byte ledMode = 2; 
  byte sampleRate = 100;
  int pulseWidth = 411;
  int adcRange = 4096;
  
  particleSensor.enableDIETEMPRDY(); 
  particleSensor.setup(ledBrightness, sampleAverage, ledMode, sampleRate, pulseWidth, adcRange);//calculates HR and SP02
}

void loop()
{
  bufferLength = 100; 
  static int i=0;
  static float avgflex=0;
  int flexposition; 
  Blynk.run();
  flexposition = analogRead(flexpin); 
  //Serial.print("\n sensorsize: "); 
  //Serial.print(flexposition); 
  delay(1000);
  //cup size moniter
     if(i<15){
      flexarray[i]=flexposition;    
    }
    while(i==15){
      avgflex=calcavgflex(flexarray);
      Serial.println("\nAvarage flex: ");
      Serial.print(avgflex);
      i=-1;
      break;
    }
  i++;
  Blynk.virtualWrite(V7, avgflex);
  //Read values
  for (byte i = 0 ; i < bufferLength ; i++)
  {
    while (particleSensor.available() == false) 
      particleSensor.check(); //Check the sensor for new data

    redBuffer[i] = particleSensor.getRed();
    irBuffer[i] = particleSensor.getIR();
    particleSensor.nextSample(); //We're finished with this sample so move to next sample

    Serial.print(F("red="));
    Serial.print(redBuffer[i], DEC);
    Serial.print(F(", ir="));
    Serial.println(irBuffer[i], DEC);
  }

  //calculate heart rate and SpO2 after 
  maxim_heart_rate_and_oxygen_saturation(irBuffer, bufferLength, redBuffer, &spo2, &validSPO2, &heartRate, &validHeartRate);


  while (1)
  {
    for (byte i = 25; i < 100; i++)
    {
      redBuffer[i - 25] = redBuffer[i];
      irBuffer[i - 25] = irBuffer[i];
    }

    //calculating the heart rate.
    for (byte i = 75; i < 100; i++)
    {
      while (particleSensor.available() == false)
        particleSensor.check();

      redBuffer[i] = particleSensor.getRed();
      irBuffer[i] = particleSensor.getIR();
      particleSensor.nextSample();

      
      float temperatureF = particleSensor.readTemperatureF();

      Serial.print(" temperatureF=");
      Serial.print(temperatureF, 4);

      Serial.print(F(", HR="));
      Serial.print(validHeartRate, DEC);

      Serial.print(F(", SPO2="));
      Serial.println(validSPO2, DEC);
    }

    //After gathering new samples recalculate HR and SP02
    maxim_heart_rate_and_oxygen_saturation(irBuffer, bufferLength, redBuffer, &spo2, &validSPO2, &heartRate, &validHeartRate);
  }
}

 //CUP SIZE MONITER
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
const int flexpin = D0; 
int flexarray[15];

char auth[] = "xxx";             
char ssid[] = "";
char pass[] = "";

void setup () 
{ 
 Serial.begin(9600); 
 Serial.print("Begin");
 Blynk.begin(auth, ssid, pass);

 //pinMode(flexpin, OUTPUT);
 
} 
void loop () 
{
 static int i=0;
 static float avgflex=0;
 int flexposition; 
 Blynk.run();
 flexposition = analogRead(flexpin); 
 Serial.print("\n sensorsize: "); 
 Serial.print(flexposition); 
 delay(1000);

    if(i<15){
      flexarray[i]=flexposition;    
    }
    while(i==15){
      avgflex=calcavgflex(flexarray);
      Serial.println("\nAvarage flex: ");
      Serial.print(avgflex);
      i=-1;
      break;
    }
  i++;
  Blynk.virtualWrite(V7, BPM);

}

int calcavgflex(int flexarray[]){
  float avgmin;
  long avgsum=0;
  for(int k=0;k<15; k++){
     avgsum+=flexarray[k];
     //Serial.println("\n");
     //Serial.print(avgsum);
     //Serial.println(" ");
  }
  avgmin=avgsum/15;
  return avgmin;
}

Credits

chaitra deepika komatineni

2 projects • 5 followers

Thanks to A. Uddeepa Reddy and Bhargava Rajaram.

Comments

Awards

Runner Up

Hacking Menopause

Smart Bra