Police Traffic Control | Arduino and ASP.NET project.
This project helps police to control traffic and catch the suspects easily.
code.ino
/*
* Police Traffic Control | Arduino and ASP.NET project.
* This project helps police to control traffic and catch the suspects easily.
*
* author: khaled alam
*/
#include <Servo.h>
// pins
const int greenLed = 4;
const int redLed = 2;
const int buzzer = 5;
const int lightSensor = A0;
const int servoPin = 9;
//vars changeable
int lightValue;
int sensorValue;
int continueStopping = -1;
char incomingFromSerial;
//serial const signals
const char OPEN_GATE = '1';
const char CLOSE_GATE = '2';
const char POLICE_SAY_STOP = '3';
const char BUZZ_ON = '4';
const char BUZZ_OFF = '5';
const char GREEN_ON = '6';
const char GREEN_OFF = '7';
const char RED_ON = '8';
const char RED_OFF = '9';
Servo servo;
void setup()
{
Serial.begin(9600);
servo.attach(servoPin);
pinMode(greenLed, OUTPUT);
pinMode(redLed, OUTPUT);
pinMode(buzzer, OUTPUT);
}
void loop()
{
while(Serial.available() > 0)
{
//read serial come from ASP.NET
incomingFromSerial = Serial.read();
//if police ask driver to stop
if (incomingFromSerial == POLICE_SAY_STOP)
{
continueStopping = 1;
offCorrectLed();
onWrongLed();
openGate();
detect();
}
// Do action based on serial signal send from ASP.NET
// manual actions:
if(incomingFromSerial == CLOSE_GATE)
{
continueStopping = -1;
closeGate();
offCorrectLed();
onWrongLed();
}
else if (incomingFromSerial == OPEN_GATE)
{
continueStopping = -1;
openGate();
offWrongLed();
onCorrectLed();
}else if (incomingFromSerial == BUZZ_ON)
{
continueStopping = 1;
turnOnBuzzer();
}else if (incomingFromSerial == BUZZ_OFF)
{
continueStopping = -1;
noTone(buzzer);
}else if (incomingFromSerial == GREEN_ON)
{
digitalWrite(greenLed, HIGH);
}else if (incomingFromSerial == GREEN_OFF)
{
digitalWrite(greenLed, LOW);
}else if (incomingFromSerial == RED_ON)
{
digitalWrite(redLed, HIGH);
}else if (incomingFromSerial == RED_OFF)
{
digitalWrite(redLed, LOW);
}
delay(100); // wait 100 milliseconds (0.1 second)
Serial.flush();
}
}
/*
* detect function use as a loop to check
* if driver follow police order and stop or not
*/
void detect()
{
//while police ask driver to stop
while(continueStopping == 1)
{
//check if driver run before police allow
if ( pass() )
{
closeGate();
turnOnBuzzer();
Serial.println("Catch Now..");
break;
}
onWrongLed();
}
}
void onCorrectLed()
{
digitalWrite(greenLed, HIGH);
}
void offCorrectLed()
{
digitalWrite(greenLed, LOW);
}
void onWrongLed()
{
digitalWrite(redLed, HIGH);
}
void offWrongLed()
{
digitalWrite(redLed, LOW);
}
void turnOnBuzzer()
{
while (continueStopping == 1)
{
//read from ASP.NET during police stop order
incomingFromSerial = Serial.read();
tone(buzzer, 1200); // << turn on buzzer
// condition to stop buzzer
if(incomingFromSerial == OPEN_GATE ||
incomingFromSerial == CLOSE_GATE ||
incomingFromSerial == POLICE_SAY_STOP ||
incomingFromSerial == BUZZ_OFF)
{
if (incomingFromSerial != BUZZ_OFF)openGate();
noTone(buzzer);
continueStopping = -1;
}
delay(60);
}
}
//check if any car cover light sensor or not
boolean pass()
{
sensorValue = analogRead(lightSensor);
lightValue = map(sensorValue, 0, 1023, 0, 255);
// increase 8 to increase sensitivity)
if (lightValue <= 8)return true;
return false;
}
void openGate()
{
servo.write(0);
}
void closeGate()
{
servo.write(90);
}
void debug()
{
Serial.print("Light Value = ");
Serial.println(lightValue);
}
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace Police_Traffic_Control
{
public partial class _Default : Page
{
public static SerialPort sp;
// Signals
const string OPEN_GATE = "1";
const string CLOSE_GATE = "2";
const string POLICE_SAY_STOP = "3";
const string BUZZ_ON = "4";
const string BUZZ_OFF = "5";
const string GREEN_ON = "6";
const string GREEN_OFF = "7";
const string RED_ON = "8";
const string RED_OFF = "9";
//Images
const string welcomeImg = "~/imgs/welcome.png";
const string openImg = "~/imgs/gateO.jpg";
const string closeImg = "~/imgs/gateC.jpg";
// etc...
protected void Page_Load(object sender, EventArgs e)
{
sp = new SerialPort();
sp.PortName = "COM3"; // change port name(if change usb pos.)
sp.BaudRate = 9600;
sp.Parity = Parity.None;
sp.DataBits = 8;
sp.StopBits = StopBits.One;
sp.ReadTimeout = 1000;
StatusImage.ImageUrl = welcomeImg; // default welcome img
}
// Change images action examples
protected void changeImage1(object sender, EventArgs e)
{
StatusImage.ImageUrl = openImg;
}
protected void changeImage2(object sender, EventArgs e)
{
StatusImage.ImageUrl = closeImg;
}
protected void changeImageProp(object sender, EventArgs e)
{
StatusImage.Width = 250;
StatusImage.Height = 300;
StatusImage.ImageAlign = ImageAlign.Bottom;
//...
}
protected void stopNow(object sender, EventArgs e) //send command to uno to open gate and turn on passing detection
{
GateStatus.Text = "<b style='background-color:yellow;'> >>> </b>Police is Asking Driver To Stop!";
// Change image ex. :
StatusImage.ImageUrl = openImg;
// add alertImg instead of openImg ^ for example
if(!sp.IsOpen)sp.Open();
sp.Write(POLICE_SAY_STOP); sp.Close();
}
protected void openGate(object sender, EventArgs e) //send command to uno to open gate
{
GateStatus.Text = "<b style='background-color:green;'> >>> </b>Gate Opened!";
if (!sp.IsOpen)sp.Open();
sp.Write(OPEN_GATE); sp.Close();
}
protected void closeGate(object sender, EventArgs e) //send command to uno to close gate
{
GateStatus.Text = "<b style='background-color:red;'> >>> </b> Gate Closed!";
if (!sp.IsOpen) sp.Open();
sp.Write(CLOSE_GATE); sp.Close();
}
protected void buzzOn(object sender, EventArgs e) //send command to uno to turn on buzz
{
GateStatus.Text = "<b style='background-color:brown;'> >>> </b> Buzz On!";
if (!sp.IsOpen) sp.Open();
sp.Write(BUZZ_ON); sp.Close();
}
protected void buzzOff(object sender, EventArgs e) //send command to uno to turn off buzz
{
GateStatus.Text = "<b style='background-color:gray;'> >>> </b> Buzz Off!";
if (!sp.IsOpen) sp.Open();
sp.Write(BUZZ_OFF); sp.Close();
}
protected void greenLedOn(object sender, EventArgs e) //send command to uno to turn on green led
{
GateStatus.Text = "<b style='background-color:green;'> >>> </b> Green Led On!";
if (!sp.IsOpen) sp.Open();
sp.Write(GREEN_ON); sp.Close();
}
protected void greenLedOff(object sender, EventArgs e) //send command to uno to turn off green led
{
GateStatus.Text = "<b style='background-color:green;'> >>> </b> Green Led Off!";
if (!sp.IsOpen) sp.Open();
sp.Write(GREEN_OFF); sp.Close();
}
protected void redLedOn(object sender, EventArgs e) //send command to uno to turn on red led
{
GateStatus.Text = "<b style='background-color:red;'> >>> </b> Red Led On!";
if (!sp.IsOpen) sp.Open();
sp.Write(RED_ON); sp.Close();
}
protected void redLedOff(object sender, EventArgs e) //send command to uno to turn off red led
{
GateStatus.Text = "<b style='background-color:red;'> >>> </b> Red Led Off!";
if (!sp.IsOpen) sp.Open();
sp.Write(RED_OFF); sp.Close();
}
}
}
