Automatic temperature detecting system

1#include<LiquidCrystal.h>  // Include LiquidCrystal library
2
3float  temperature;    // Variable for storing the input value of temperature sensor
4float  voltage;       // Variable for storing the given voltage of teperature sensor
5float  temp_in_celsius; // Variable for storing the value in celsius
6float temp_in_fahernheit;  // Variable for storing the value in fahernheit
7
8const int trigPin = 9;   //  Trigger pin of ultrasonic sensor 
9const int echoPin = 10;  // Echo pin of ultrasonic  sensor 
10long duration;           // Variable for storing the input value of ultrasonic  sensor
11int distance_in_cm;      // Variable for storing the distance in centimeters
12int  distance_in_inches; // Variable for storing the distance in Inches
13
14int pir_sensor  = 8;     // Pin connected to output pin of PIR sensor
15int Motor = 1;          //  Pin connected to motor
16int Buzzer = 11;        // Pin connected to Buzzer
17int  Led = 12;           // Pin connected to LED
18int tmp_36 = A0;       // Pin connected  to output pin of temperature sensor
19int i = 0;             // Variable for 'if'  condiotion
20int s = 0;             // Variable for 'while loop'
21
22
23int  wait = 500;       // delay time
24
25int pir_sensor_value;  // Variable for storing  the input value of PIR sensor value
26
27LiquidCrystal LCD1(13,A1,A2,A3,A4,A5);  // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7) for first LCD
28LiquidCrystal  LCD2(2,3,4,5,6,7);        // Creates an LCD object. Parameters: (rs, enable, d4,  d5, d6, d7) for second LCD
29  
30void setup()
31{
32  
33  
34 LCD1.begin(16,2);  // Initialize first LiquidCrystal display
35 LCD2.begin(16,2);   // Initialize  second LiquidCrystal display
36  
37 pinMode(tmp_36, INPUT);         // Set Temperature  sensor pin as an INPUT pin
38 pinMode(trigPin, OUTPUT);      // Set Trigger pin  of ultrasonic sensor as an OUTPUT pin
39 pinMode(echoPin, INPUT);      // Set Echo  pin of ultrasonic sensor as an INPUT pin
40 pinMode(pir_sensor, INPUT);  // Set  PIR sensor pin as an INPUT pin
41 pinMode(Buzzer, OUTPUT);   // Set Buzzer pin  as an OUTPUT pin
42 pinMode(Motor, OUTPUT);     // Set Electric Motor pin as an  OUTPUT pin
43 pinMode(Led, OUTPUT);       // Set LED pin as an OUTPUT pin
44  
45
46}
47
48void  loop()
49{
50  pir_sensor_value = digitalRead(pir_sensor);      // // See if PIR  sensor senses or not
51  
52  if (pir_sensor_value == HIGH || i == 1)
53  {
54       while(s<1)
55    {
56    LCD2.print("Alert");      // Print the text  .Alert' on second LCD
57    delay(wait); 
58    LCD2.clear(); 
59    s=1; 
60    }
61
62  digitalWrite(trigPin, LOW);  // Clears the trigPin condition
63  delayMicroseconds(2);        
64  digitalWrite(trigPin, HIGH);  // Sets the trigPin  HIGH (ACTIVE) for 10 microseconds
65  delayMicroseconds(10);
66  digitalWrite(trigPin,  LOW);
67  duration = pulseIn(echoPin, HIGH);     // Reads the echoPin, returns  the sound wave travel time in microseconds
68  distance_in_cm = duration*0.0343;
69  distance_in_cm = distance_in_cm/2;    // Calculating the distance in centimeters     
70  distance_in_inches = distance_in_cm * 0.3937;  // Calculating the distance  in inches
71  
72
73  temperature = analogRead(tmp_36);   //getting the voltage  reading from the temperature sensor
74  voltage = temperature * 0.0048828125;  //  converting that reading to voltage
75  temp_in_celsius = (voltage - 0.5) * 100;   //converting from 10 mv per degree with 500 mV offset
76                                              //to  degrees ((voltage - 500mV) times 100)
77  temp_in_fahernheit = (temp_in_celsius  * 9.0 / 5.0) + 32.0;   // now convert to Fahrenheit
78  
79
80  if (distance_in_cm  < 30)             // when the ultrasonic distance is less than 30 
81  {
82  LCD1.print("Temp.C  :");        
83  LCD1.print(temp_in_celsius);         // Print the temperature  value in Celsius
84  LCD1.setCursor(0,1);
85  LCD1.print("Temp.F :");
86  LCD1.print(temp_in_fahernheit);     // Print the temperature value in Celsius
87    
88  LCD2.print("Distance:  ");
89  LCD2 .print(distance_in_cm);      // Print the distance of ultrasonic  sensor in Centimeters
90  LCD2.print("cm");  
91  LCD2.setCursor(0,1);  
92  LCD2.print("Distance: ");
93  LCD2 .print(distance_in_inches);   // Print the  distance of ultrasonic sensor in Inches
94  LCD2.print("in");
95  delay(wait);
96  LCD2.clear();   
97  LCD1.clear();
98  
99  if (  temp_in_celsius > 37.5)   //  When temperature is greater than 37.5 degree celsius
100  {
101    digitalWrite(Buzzer,  HIGH);  // Buzzer will be turned on
102    digitalWrite(Led, HIGH);      // LED  will be turned on
103    digitalWrite(Motor, LOW);     // Motor will stay off
104  }
105    
106 else
107  {
108    digitalWrite(Buzzer, LOW);  // Buzzer will stay  off
109    digitalWrite(Led, LOW);     // LED will stay off
110    digitalWrite(Motor,  HIGH);  // Motor willbe turned on
111  }
112  }
113  else
114  {
115 
116    
117  LCD1.print("");
118  LCD1.setCursor(0,1);
119  LCD1.print("");
120
121  LCD2.print("Distance:  ");
122  LCD2 .print(distance_in_cm);  // Print the distance of ultrasonic sensor  in Centimeters
123  LCD2.print("cm");  
124  LCD2.setCursor(0,1);  
125  LCD2.print("Distance:  ");
126  LCD2 .print(distance_in_inches);  // Print the distance of ultrasonic  sensor in Inches
127  LCD2.print("in");
128  delay(wait);
129  LCD1.clear();
130  LCD2.clear();   
131  } 
132  i=1;    
133 }  
134
135  else
136  {
137    i=0;
138  }
139  }
140

1#include<LiquidCrystal.h>  // Include LiquidCrystal library
2
3float
4  temperature;    // Variable for storing the input value of temperature sensor
5float
6  voltage;       // Variable for storing the given voltage of teperature sensor
7float
8  temp_in_celsius; // Variable for storing the value in celsius
9float temp_in_fahernheit;
10  // Variable for storing the value in fahernheit
11
12const int trigPin = 9;   //
13  Trigger pin of ultrasonic sensor 
14const int echoPin = 10;  // Echo pin of ultrasonic
15  sensor 
16long duration;           // Variable for storing the input value of ultrasonic
17  sensor
18int distance_in_cm;      // Variable for storing the distance in centimeters
19int
20  distance_in_inches; // Variable for storing the distance in Inches
21
22int pir_sensor
23  = 8;     // Pin connected to output pin of PIR sensor
24int Motor = 1;          //
25  Pin connected to motor
26int Buzzer = 11;        // Pin connected to Buzzer
27int
28  Led = 12;           // Pin connected to LED
29int tmp_36 = A0;       // Pin connected
30  to output pin of temperature sensor
31int i = 0;             // Variable for 'if'
32  condiotion
33int s = 0;             // Variable for 'while loop'
34
35
36int
37  wait = 500;       // delay time
38
39int pir_sensor_value;  // Variable for storing
40  the input value of PIR sensor value
41
42LiquidCrystal LCD1(13,A1,A2,A3,A4,A5);
43  // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7) for first LCD
44LiquidCrystal
45  LCD2(2,3,4,5,6,7);        // Creates an LCD object. Parameters: (rs, enable, d4,
46  d5, d6, d7) for second LCD
47  
48void setup()
49{
50  
51  
52 LCD1.begin(16,2);
53  // Initialize first LiquidCrystal display
54 LCD2.begin(16,2);   // Initialize
55  second LiquidCrystal display
56  
57 pinMode(tmp_36, INPUT);         // Set Temperature
58  sensor pin as an INPUT pin
59 pinMode(trigPin, OUTPUT);      // Set Trigger pin
60  of ultrasonic sensor as an OUTPUT pin
61 pinMode(echoPin, INPUT);      // Set Echo
62  pin of ultrasonic sensor as an INPUT pin
63 pinMode(pir_sensor, INPUT);  // Set
64  PIR sensor pin as an INPUT pin
65 pinMode(Buzzer, OUTPUT);   // Set Buzzer pin
66  as an OUTPUT pin
67 pinMode(Motor, OUTPUT);     // Set Electric Motor pin as an
68  OUTPUT pin
69 pinMode(Led, OUTPUT);       // Set LED pin as an OUTPUT pin
70  
71
72}
73
74void
75  loop()
76{
77  pir_sensor_value = digitalRead(pir_sensor);      // // See if PIR
78  sensor senses or not
79  
80  if (pir_sensor_value == HIGH || i == 1)
81  {
82
83       while(s<1)
84    {
85    LCD2.print("Alert");      // Print the text
86  .Alert' on second LCD
87    delay(wait); 
88    LCD2.clear(); 
89    s=1; 
90
91    }
92
93  digitalWrite(trigPin, LOW);  // Clears the trigPin condition
94
95  delayMicroseconds(2);        
96  digitalWrite(trigPin, HIGH);  // Sets the trigPin
97  HIGH (ACTIVE) for 10 microseconds
98  delayMicroseconds(10);
99  digitalWrite(trigPin,
100  LOW);
101  duration = pulseIn(echoPin, HIGH);     // Reads the echoPin, returns
102  the sound wave travel time in microseconds
103  distance_in_cm = duration*0.0343;
104
105  distance_in_cm = distance_in_cm/2;    // Calculating the distance in centimeters
106     
107  distance_in_inches = distance_in_cm * 0.3937;  // Calculating the distance
108  in inches
109  
110
111  temperature = analogRead(tmp_36);   //getting the voltage
112  reading from the temperature sensor
113  voltage = temperature * 0.0048828125;  //
114  converting that reading to voltage
115  temp_in_celsius = (voltage - 0.5) * 100;
116   //converting from 10 mv per degree with 500 mV offset
117                                              //to
118  degrees ((voltage - 500mV) times 100)
119  temp_in_fahernheit = (temp_in_celsius
120  * 9.0 / 5.0) + 32.0;   // now convert to Fahrenheit
121  
122
123  if (distance_in_cm
124  < 30)             // when the ultrasonic distance is less than 30 
125  {
126  LCD1.print("Temp.C
127  :");        
128  LCD1.print(temp_in_celsius);         // Print the temperature
129  value in Celsius
130  LCD1.setCursor(0,1);
131  LCD1.print("Temp.F :");
132  LCD1.print(temp_in_fahernheit);
133     // Print the temperature value in Celsius
134    
135  LCD2.print("Distance:
136  ");
137  LCD2 .print(distance_in_cm);      // Print the distance of ultrasonic
138  sensor in Centimeters
139  LCD2.print("cm");  
140  LCD2.setCursor(0,1);  
141
142  LCD2.print("Distance: ");
143  LCD2 .print(distance_in_inches);   // Print the
144  distance of ultrasonic sensor in Inches
145  LCD2.print("in");
146  delay(wait);
147
148  LCD2.clear();   
149  LCD1.clear();
150  
151  if (  temp_in_celsius > 37.5)   //
152  When temperature is greater than 37.5 degree celsius
153  {
154    digitalWrite(Buzzer,
155  HIGH);  // Buzzer will be turned on
156    digitalWrite(Led, HIGH);      // LED
157  will be turned on
158    digitalWrite(Motor, LOW);     // Motor will stay off
159
160  }
161    
162 else
163  {
164    digitalWrite(Buzzer, LOW);  // Buzzer will stay
165  off
166    digitalWrite(Led, LOW);     // LED will stay off
167    digitalWrite(Motor,
168  HIGH);  // Motor willbe turned on
169  }
170  }
171  else
172  {
173 
174    
175
176  LCD1.print("");
177  LCD1.setCursor(0,1);
178  LCD1.print("");
179
180  LCD2.print("Distance:
181  ");
182  LCD2 .print(distance_in_cm);  // Print the distance of ultrasonic sensor
183  in Centimeters
184  LCD2.print("cm");  
185  LCD2.setCursor(0,1);  
186  LCD2.print("Distance:
187  ");
188  LCD2 .print(distance_in_inches);  // Print the distance of ultrasonic
189  sensor in Inches
190  LCD2.print("in");
191  delay(wait);
192  LCD1.clear();
193
194  LCD2.clear();   
195  } 
196  i=1;    
197 }  
198
199  else
200  {
201    i=0;
202
203  }
204  }
205