IoT based patient health condition monitoring system

1#include <ESP8266WiFi.h>
2#include <DHT.h>  // Including library for  dht
3#include <DallasTemperature.h> //for body temp
4#include <OneWire.h>
5#include  <Wire.h> 
6#include <LiquidCrystal_I2C.h>
7#define BLYNK_PRINT Serial
8#include  <BlynkSimpleEsp8266.h> /// for notfication
9
10
11#include <UniversalTelegramBot.h>  // Universal Telegram Bot Library written by Brian Lough: https://github.com/witnessmenow/Universal-Arduino-Telegram-Bot
12#include  <ArduinoJson.h>
13
14LiquidCrystal_I2C lcd(0x27,16,2);  //0x27 is the i2c address,  while 16 = columns, and 2 = rows. 
15
16#define USE_ARDUINO_INTERRUPTS true    //  Set-up low-level interrupts for most acurate BPM math.
17#include <PulseSensorPlayground.h>     // Includes the PulseSensorPlayground Library.   
18#include <LiquidCrystal.h>
19
20                               
21
22String apiKey = "AZG3E3KOTX4NH1H1";     //  Enter your Write API key from ThingSpeak
23 const char *ssid =  "EETD";     //  replace with your wifi ssid and wpa2 key
24const char *pass =  "passwordattceetd2022*";
25const  char* server = "api.thingspeak.com";
26char auth[] = "EHAfZjPGLhqktPgP34fxMCAcEqOZ9VDp";  // Enter the Auth Token provied by Blynk app
27
28#define ONE_WIRE_BUS 4                          //D2  pin of nodemcu
29OneWire oneWire(ONE_WIRE_BUS);
30DallasTemperature sensors(&oneWire);            // Pass the oneWire reference to Dallas Temperature.
31
32#define  ledpin D0 
33#define switch D1   // pin where the led is connected
34#define DHTPIN  D5        //pin where the dht11 is connected
35DHT dht(DHTPIN, DHT22);
36#define  ONE_WIRE_BUS D3 // Data wire is connected to GPIO 4 i.e. D2 pin of nodemcu
37
38int  val;
39int PulseSensorpin = A0; //Pulse Sensor Pin Connected at A0 Pin
40 double  alpha=0.75;
41   int period=20;
42   double refresh=0.0;
43
44
45
46WiFiClient  client;
47
48void setup(void)
49{
50  Serial.begin(9600); 
51
52  
53 pinMode(switch,INPUT);  //set the pushbutton as input
54       pinMode(ledpin,OUTPUT); //set the led as  output
55       Blynk.begin(auth, ssid, pass);   
56       Serial.begin(9600);
57       delay(10);
58  
59  sensors.begin();
60  dht.begin();
61
62   Wire.begin(2,0);  // gpio 2 and gpio 0 which are D4, and D3
63  lcd.init();                 //Init  the LCD
64  lcd.backlight();            //Activate backlight     
65  lcd.home();  
66 
67       Serial.println("Connecting to ");
68       Serial.println(ssid);
69  
70 
71       WiFi.begin(ssid, pass);
72 
73      while (WiFi.status() != WL_CONNECTED)  
74     {
75            delay(500);
76            Serial.print(".");
77     }
78      Serial.println("");
79      Serial.println("WiFi connected");
80
81}
82
83void  loop(void)
84{ 
85
86  
87   Blynk.run();
88if(digitalRead(switch) == HIGH)
89{
90  digitalWrite(ledpin,HIGH);
91Serial.println("Send Notification to Blynk");
92Blynk.notify("READY  TO SEE PATIENT CONDITION"); // This notification will be sent to Blynk App
93}
94
95  if(dht.readTemperature()<= 26 && sensors.getTempCByIndex(0)<=37){
96    Blynk.email("eyobmillion425@gmail.com",  "Doctor Alert", "You are in good condition!");
97    }
98    else{Blynk.email("eyobmillion425@gmail.com",  "Doctor Alert", "You have to go for more checkups!");
99    }
100   static  double oldValue=0;
101   static double oldrefresh=0;
102  int val = analogRead(PulseSensorpin);  //Read Analog values and Store in val variable
103   
104   double value=alpha*oldValue+(0-alpha)*val;
105   refresh=value-oldValue;
106  oldValue=value;
107   oldrefresh=refresh;
108   delay(period*10);
109  Serial.println("Pulse Sensorvalue=  "); // Start Printing on Pulse sensor value  on LCD
110  Serial.println(110-refresh); // Start Printing on Pulse sensor value  on LCD
111  delay(10);
112            
113  sensors.requestTemperatures();                //  Send the command to get temperatures  
114  Serial.println("Temperature is: ");
115  Serial.println(sensors.getTempCByIndex(0));   // Why "byIndex"? You can have  more than one IC on the same bus. 0 refers to the first IC on the wire
116  delay(500);
117
118   float h = dht.readHumidity();
119      float t = dht.readTemperature();
120      
121              if (isnan(h) || isnan(t)) 
122                 {
123                     Serial.println("Failed  to read from DHT sensor!");
124                      return;
125                 }
126lcd.setCursor(0,  0);
127lcd.print("Room Temp=");
128lcd.print( dht.readTemperature());
129
130lcd.setCursor(0,  1);      
131lcd.print("Body temp=");
132lcd.print(sensors.getTempCByIndex(0));
133delay(2000);
134                         if (client.connect(server,80))   //   "184.106.153.149"  or api.thingspeak.com
135                      {  
136                            
137                             String postStr = apiKey;
138                             postStr  +="&field1=";
139                             postStr += String(sensors.getTempCByIndex(0));
140                             postStr +="&field2=";
141                             postStr  += String(t);
142                             postStr +="&field3=";
143                             postStr  += String(h);
144                             postStr +="&field4=";
145                             postStr  += String(refresh);
146                             postStr += "\
\
147\
\
148";
149  
150                             client.print("POST /update HTTP/1.1\
151");
152                             client.print("Host: api.thingspeak.com\
153");
154                             client.print("Connection: close\
155");
156                             client.print("X-THINGSPEAKAPIKEY:  "+apiKey+"\
157");
158                             client.print("Content-Type:  application/x-www-form-urlencoded\
159");
160                             client.print("Content-Length:  ");
161                             client.print(postStr.length());
162                             client.print("\
163\
164");
165                             client.print(postStr);
166                             
167                             
168                             Serial.print("Temperature:  ");
169                             Serial.print(t);
170                             Serial.print("  degrees Celcius, Humidity: ");
171                             Serial.print(h);
172                             Serial.println("%. Send to Thingspeak.");
173                        }
174          client.stop();
175 
176          Serial.println("Waiting...");
177  
178  // thingspeak needs minimum 15 sec delay between updates
179  delay(1000);
180}
181