Published May 12, 2015 © GPL3+

Cab Safety System (Cabs4Cabs)

Cabs4Cabs: Consolidated Arduino Based Sureveillance for Cabs.

BeginnerWork in progress7,943

Things used in this project

Hardware components

Arduino UNO

1Sheeld

MQ3 Alcohol Sensor

Push Button

Resistors and LEDs

Story

So we had to create a hardware project for our final year engineering project. We decided to go into cab safety as transport related crimes in the country are at an all time high. We introduce Cabs4Cabs:Consolidated arduino Based Surveillance for Cabs. Our system is a prototype of what should be a cab safety device. The features include:

Breathalyzer

(The driver is forced to blow into the alcohol sensor and only if the value is low the UI will start)

Mishap Detection

(Using the accelerometer shield on the 1sheeld, we detect mishaps)

SOS Button

(The hardware push button sends an SMS to the emergency contact of the passenger using the SMS and GPS shield of 1Sheeld)

Route Display

(Passenger end Android app sends start and destination location while 1sheeld GPS shield maintains the current location of cab. This is display using Google Maps API)

Live Meter Reading

(As the cab travels, the fare is displayed for the distance covered)

Arrival at Destination Notification

(If the cab is less than 1km away from the destination, the passenger is notified)

Route Deviation Detection

(If the cab deviates from the route, a dismissal button will become active. In a given timeout if the passenger doesn't dimiss it, the server is notified)

We have implemented the project using Arduino, 1sheeld and ThingSpeak.

The 1sheeld+Arduino device communicates with the in-cab screen via ThingSpeak. The in-cab screen communicates with the server via ThingSpeak. Also, the passenger end app send the information to the in-cab screen via ThingSpeak. Hence, there are 3 channels.

Cabs4Cabs Overview

Hardware Arrangement

Passenger End Android App

In-Cab Screen UI

Code

Arduino Side Code

#include <OneSheeld.h>

HttpRequest request ("https://api.thingspeak.com/update");
char latc[30], lonc[30], sosMessage[70], temp3[8], distancec[8];
float lon=0,lat=0,x=0,y=0,z=0,temp1=0, temp2=0;
int buttonPin = 8, startFlag=3;
bool isMessageSent, sosFlag=false, mishapFlag=false; 
int sensorPin = 0; 
int time, flag=0;  
int i;
int j;
float start_lat=0, start_lon=0, distance=0;

void setup()
{
 
  pinMode(2,OUTPUT); //Initializing pins for LED
  pinMode(3,OUTPUT);
  pinMode(13,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(buttonPin,INPUT); //Intitializing pin for SOS
 
  OneSheeld.begin();
  request.addParameter("key","xxxxxxxxxxxxx"); //ThingSpeak Channel API

  }
  

void loop()
{

///****ALCOHOL SENSOR****/
  int sensor = analogRead(sensorPin); 
  Terminal.println(sensor);
  if(sensor <= 10 && sensor >=1) //Low Value
  {  
 
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(13, HIGH);
    digitalWrite(4, LOW);
   
  }
  else if(sensor > 10 && sensor < 40) //Moderate Value
  {
    digitalWrite(2, LOW); 
    digitalWrite(3, HIGH); 
    digitalWrite(13, LOW);
    digitalWrite(4, LOW);
    
  }
  else if(sensor > 40) //High Value
  {

    digitalWrite(2, HIGH);
    digitalWrite(3,HIGH);
    digitalWrite(13,HIGH);
    digitalWrite(4, HIGH);
  }
  else if(sensor == 0) //Default Value
  {
    digitalWrite(2, LOW); 
    digitalWrite(3, LOW); 
    digitalWrite(13, LOW); 
    digitalWrite(4, LOW);

  }
  
  
  
/****GPS****/
 if ((start_lat==0) && (start_lon==0) && (flag==0)) //Start Location Coordinates
 {
 start_lat = GPS.getLatitude();
 start_lon = GPS.getLongitude();
 if ((start_lat!=0) && (start_lon!=0))
 {
 flag=1;
 }
 }
 lat = GPS.getLatitude(); //Current Location Coordinates
 lon = GPS.getLongitude();
 dtostrf(lat, 3, 6, latc); 
 request.addParameter("field1",latc); 
 dtostrf(lon, 3, 6, lonc); 
 request.addParameter("field2",lonc);
 distance = GPS.getDistance(start_lat,start_lon);
 distance/= 1000;
 dtostrf(distance, 3, 3, distancec);
 request.addParameter("field5",distancec); //Distance between Start and Current Location
 

/****MISHAP****/
 x=AccelerometerSensor.getX();
 y=AccelerometerSensor.getY();
 z=AccelerometerSensor.getZ();
 
 if ((x>-7.0) && (z<-7.0)) //Mishap Detected
 {
   request.addParameter("field3","Y");
   //mishapFlag==true;
 }
 else
 {
   request.addParameter("field3","N"); //No Mishap
 }
 
/****SOS****/
  if(digitalRead(buttonPin) == HIGH) //SOS Button Pressed
  {
    if(!isMessageSent)
		{
                lat = GPS.getLatitude();
                lon = GPS.getLongitude();
                request.addParameter("field4","SOS");
                sosFlag=true;
                dtostrf(lat, 8, 6, latc); 
		strcat(sosMessage,"SOS! Please track my cab");
                strcat(sosMessage,"http://maps.google.com/maps?q=");
		strcat (sosMessage,latc); 
		strcat(sosMessage,",");
                dtostrf(lon, 8, 6, lonc);
		strcat (sosMessage,lonc);
		SMS.send("+91xxxxxxxxx",sosMessage); //SMS to emergency contact
		isMessageSent = true;		
		}

	else 
		{
		isMessageSent = false;
		}
  }
  else
  {
    if(sosFlag==false)
    {
    request.addParameter("field4","NOSOS");
    }
  }
 

Internet.performGet(request); 
OneSheeld.delay(5000);

}

Credits

Aditi Ja

1 project • 8 followers

Drishti Kanjilal

1 project • 7 followers

Cab Safety System (Cabs4Cabs)

Things used in this project

Hardware components

Story

Schematics

C4C Breadboard Arrangement

Code

Arduino Side Code

Credits

Aditi Ja

Drishti Kanjilal

Comments

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Cab Safety System (Cabs4Cabs)

Cab Safety System (Cabs4Cabs)

Things used in this project

Hardware components

Story

Schematics

C4C Breadboard Arrangement

Code

Arduino Side Code

Credits

Aditi Ja

Drishti Kanjilal

Comments

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