Laura Juliana Vargas Escobar
Published © GPL3+

e-Care Heart

E-health Prototype System for Cardiac Telemonitoring "Caring your heart anywhere"

IntermediateWork in progress10,983
e-Care Heart

Things used in this project

Story

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Schematics

Required Devices

This image shows all the devices used and how they should be connected, the board circuit is only a CMOS connected as buffer to make that the maximum output voltage of the Arduino is not greater than 3.3v.

Code

GPS_AND_PULSEOXIMETER.ino

C/C++
This is the code to obtain de GPS coordinates and to communicate the
Link It ONE to the e-health card for Arduino UNO to obtain the cardiac pulse signal.
This data is send and posted in UBIDOTS
/*This is the code to obtain de GPS coordinates and to communicate the
Link It ONE to the e-health card for Arduino UNO to obtain the cardiac pulse signal.
This data is send and posted in UBIDOTS*/

//Libraries
#include <LGPS.h>
#include <LTask.h>
#include <LWiFi.h>
#include <LWiFiClient.h>

//WiFi Configuration
#define WIFI_AP "bisemic"//put your network name
#define WIFI_PASSWORD "bisemick305"//put your network password
#define WIFI_AUTH LWIFI_WPA  //network configuration->LWIFI_OPEN, LWIFI_WPA, or LWIFI_WEP.

//Variables
#define SITE_URL "things.ubidots.com"
#define TOKEN "XIBVJIamJMfxVEcJTUiXUFihiqOBoP"//This token is generate on your ubidots profile
#define IDGPS "5644e9d57625425c3e6219e3"//variable id->it is generate at the ubidots's dashboard
#define IDPULSO "5659dc1c7625423b5e627699"//variable id->it is generate at the ubidots's dashboard

LWiFiClient c;
gpsSentenceInfoStruct info;
String Location = "";          // Will build the Location string here. this is for the GPS information

//configuration to read the pulse-oximeter data
#include<HardwareSerial.h>
#include<UARTClass.h>
int dato=0;

void setup() {
  Serial1.begin(9600);//this serial is the serial port to communicate the Link It ONE with the Arduino UNO and transmit the data
  Serial.begin(9600);
  LGPS.powerOn();
  Serial.println("LGPS Power on, and waiting ..."); 

//***************WiFi Conection****************//////
  LWiFi.begin();
  LTask.begin();
  Serial.println();
  Serial.println("Connecting to AP...");
//This secction is to conect to the network
  if(LWiFi.connectWPA(WIFI_AP,WIFI_PASSWORD)<0)
    {
      Serial.println("FAIL!");
      return;
    }
    Serial.println("OK");
//This secction is to conect to the site
    Serial.print("Connecting to site...");
    if(!c.connect(SITE_URL, 80))
      {
        Serial.println("FAIL!");
        return;
      }
      Serial.println("OK");
  // send HTTP request, ends with 2 CR/LF
  Serial.println("send HTTP GET request");
  c.println("GET / HTTP/1.1");
  c.println("Host: " SITE_URL);
  c.println("Connection: close");
  c.println();
//*****************END OF WIFI CONECTION***********//
}

void loop() {
  Serial.println("LGPS loop"); 
  LGPS.getData(&info);
  //*******ParseLocation is the function to obtain the GPS coordinates**********//
   ParseLocation((const char*)info.GPGGA);

   
//**************pulse-oximeter lecture********************//
  dato=Serial1.read();
    Serial.println("EMG:");
    Serial.println(Serial1.read());
 //*******"datos_bpm" is the function to post the pulse-oximeter data in UBIDOTS
  datos_bpm(String(dato));
      delay(1000);
}

//////////************************FUNCTION PARSELOCATION****************///////
void ParseLocation(const char* GPGGAstr)
// Refer to http://www.gpsinformation.org/dale/nmea.htm#GGA
// Sample data: $GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
{
  char latarray[6];
  char longarray[6];
  int index = 0;
  Serial.println(GPGGAstr);
  Serial.print("Fix Quality: ");
  Serial.println(GPGGAstr[43]);
  if (GPGGAstr[43]=='0') {        //  This is the place in the sentence that shows Fix Quality 0 means no fix
    Serial.println("No GPS Fix");
    Location = "";           // No fix then no Location string
  }
  String GPSstring = String(GPGGAstr);
  for (int i=20; i<=26; i++) {         // We have to jump through some hoops here
    latarray[index] = GPGGAstr[i];     // we need to pick out the minutes from the char array
    index++;
  }
  float latdms = atof(latarray);        // and convert them to a float
  float lattitude = latdms/60;          // and convert that to decimal degrees
  String lattstring = String(lattitude,8);// Then put back into a string with 8 decimal position
  Location = "{\"lat\":";
  if(GPGGAstr[28] == 'S')Location = Location + "-";      
 Location=Location+ GPSstring.substring(19,20) + "." + lattstring.substring(2,10);
String  lat=GPSstring.substring(19,20) + "." + lattstring.substring(2,10);
  index = 0;
  for (int i=33; i<=38; i++) {         // And do the same thing for longitude
    longarray[index] = GPGGAstr[i];     // the good news is that the GPS data is fixed column
    index++;
  }
  float longdms = atof(longarray);        // and convert them to a float
  float longitude = longdms/60;          // and convert that to decimal degrees
  String longstring = String(longitude,8);// Then put back into a string with 8 decimal position
  Location=Location+"\"lng\":";
  if(GPGGAstr[41] == 'W') Location = Location + "-";
  if(GPGGAstr[30] == '0') {
    Location = Location+ GPSstring.substring(31,33) + "." + longstring.substring(2,10);
    String lng=GPSstring.substring(31,33) + "." + longstring.substring(2,10);
  //*******"dato_gps" is the function to post the GPS data
    dato_gps(lat,"-"+lng);
  }
  else {
    Location = Location+ GPSstring.substring(30,33) + "." + longstring.substring(2,10);
    String lng=GPSstring.substring(30,33) + "." + longstring.substring(2,10);
  //*******"dato_gps" is the function to post the GPS data
    dato_gps(lat,"-"+lng);
  }
Location=Location+"}";
     
}
/////////*************END OF PARSELOCATION FUNCTION**************////////////////////

//************GPS FUNCTION to post data*************
void dato_gps(String lat,String lng){
    Serial.println("Sending value to Ubidots...");
    LWiFiClient c;
  while (!c.connect(SITE_URL, 80))
  {    Serial.println("Retrying to connect...");
      delay(100);  }
//*****************Posting GPS data*******************//
double a=265;
  String valor=String(a);
  String data = "{\"value\":"+valor+",\"context\":{\"lat\":"+lat+",\"lng\":"+lng+"}}";
  String thisLength = String(data.length());
    // Build HTTP POST request
  c.print("POST /api/v1.6/variables/");
  c.print(IDGPS);
  c.print("/values?token=");
  c.print(TOKEN);
  c.println(" HTTP/1.1");
  c.println("Content-Type: application/json");
  c.println("Content-Length: " + thisLength);
  c.print("Host: ");
  c.println(SITE_URL);
  c.print("\n" + data);
  c.print(char(27));
  Serial.println(data);
 // read server response
  while (c){    Serial.print((char)c.read());  }
  c.stop(); 
}

//******************FUNCTION TO TRANSMIT THE PULXIOXIMETER DATA**************//
  void datos_bpm(String value){
   Serial.println("Sending value to Ubidots...");
   Serial.println(value);
  LWiFiClient c;
  while (!c.connect(SITE_URL, 80))
  {
    Serial.println("Retrying to connect...");
    delay(100);
  }
  String data = "{\"value\":"+ value + "}";
  String thisLength = String(data.length());
  // Build HTTP POST request
  c.print("POST /api/v1.6/variables/");
  c.print(IDPULSO);
  c.print("/values?token=");
  c.print(TOKEN);
  c.println(" HTTP/1.1");
  c.println("Content-Type: application/json");
  c.println("Content-Length: " + thisLength);
  c.print("Host: ");
  c.println(SITE_URL);
  c.print("\n" + data);
  c.print(char(26)); 
  // read server response
  while (c){
    Serial.print((char)c.read());
  }
  c.stop();
}

WIFI_communication.ino

C/C++
This is the code to connect by wifi to a network
/*
This is the code to connect to wifi 
 */
//Libaries
#include <LTask.h>
#include <LWiFi.h>
#include <LWiFiClient.h>

//Wifi Configuration
#define WIFI_AP "bisemic"//network name
#define WIFI_PASSWORD "bisemick305"//network password
#define WIFI_AUTH LWIFI_WPA  // network configuration-> LWIFI_OPEN, LWIFI_WPA, or LWIFI_WEP.

//web site to connect
#define SITE_URL "things.ubidots.com"
LWiFiClient c;

void setup()
{
  Serial.begin(9600);
  LWiFi.begin();  
  LTask.begin();
  
  Serial.println();
  Serial.println("Connecting to AP...");
  //Connecting to network
  if(LWiFi.connectWPA(WIFI_AP,WIFI_PASSWORD)<0)
    {
      Serial.println("FAIL!");
      return;
    }
    Serial.println("OK");
   //connecting to web site
    Serial.print("Connecting to site...");
    if(!c.connect(SITE_URL, 80))
      {
        Serial.println("FAIL!");
        return;
      }
      Serial.println("OK");
         
  // send HTTP request, ends with 2 CR/LF
  Serial.println("send HTTP GET request");
  c.println("GET / HTTP/1.1");
  c.println("Host: " SITE_URL);
  c.println("Connection: close");
  c.println();
}

void loop()
{

}

PULSE-OXIMETER_LECTURE.ino

C/C++
This code is to obtain the pulse-oximeter data and send
it to a serial port created, called "Serial1" to the LinkIt ONE
/*This code is to obtain the pulse-oximeter data and send
it to a serial port created, called "Serial1" to the LinkIt ONE
This code was developed by: Nelson F. Monroy R. from Bucaramanga-Colombia 
NOTE: The libraries were modificated to this purpose*/
#include <SoftwareSerial.h>
#include <eHealth.h>
#include <PinChangeInt.h>

SoftwareSerial serial1(4,5);//Pin 4 to RX, and pin 5 to TX
int cont=0, SPO2,BPM, dato;

void setup() {
serial1.begin(9600);
eHealth.initPulsioximeter();
PCintPort::attachInterrupt(6,readPulsioximeter,RISING);  
}

void loop() {
    BPM= eHealth.getBPM();//The BPM data is the data of cardiac pulse
    serial1.write(BPM);
    delay(5000);
}
void readPulsioximeter()
{
  cont ++;
  if (cont==20)
  {
  eHealth.readPulsioximeter();
  cont=0;
  }
}

Credits

Laura Juliana Vargas Escobar

Laura Juliana Vargas Escobar

1 project • 14 followers
Electronic engineering student of the Pontificia Bolivariana University-Bucaramanga branch. Areas of interest: Biomedica, seismic, e-health, home automation
Thanks to Mgs. Sergio Alexander Salinas and Ing. Nelson Fernando Monroy Rios.

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