ASK HERE

28-09-2017, 10:28 AM

Please let me know as why density based traffic control system not successful in India

jaseela123d · 28-09-2017, 11:56 AM

Controlling traffic today becomes a major problem due to the rapid increase of cars and also due to the large delays between traffic lights. Therefore, in order to rectify this problem, we will go for density-based system of traffic lights. This article explains how to control traffic based on density.

Density-based traffic signal system Circuit principle:

The main heart of this traffic system is the microcontroller. The infrared sensors are connected to the microcontroller C port (PC0, PC1, PC2 and PC3) and the traffic lights are connected to ports B and D. If there is traffic on the road, 1. When receiving these IR sensor outputs, we have to write the program to control the traffic system.

If you receive the logical 0 of any of these sensors, we have to give the green signal to that particular route and give red signal to all other paths. Here we continually have to monitor IR sensors to verify traffic.

Density-based traffic signal system Circuit diagram:

[Image: Density-Based-Traffic-Lights-System-Circ...24x552.jpg]

Circuit Components:

• ATmega8 Controller

• PCB Board

• IR sensors -4

• LED's-12 (4-red, 4-green, 4-yellow)

• 12v battery or adapter

• Serial cable

• Connection cables

Density Based Traffic Light Control System Circuit Design:

This circuit consists of 4 IR sensors, atmega8 microcontroller, 4 traffic lights.

The IR transmitter looks like an LED. This IR transmitter always emits IR rays from it. The operating voltage of this IR transmitter is 2 to 3v. These IR (infrared) rays are invisible to the human eye. But we can see these IR rays through the camera.

The IR receiver receives the IR rays that are transmitted by the IR transmitter. Usually the IR receiver has high resistance in order of mega ohms, when receiving the IR rays the resistance is very low. The IR receiver operating voltage also 2 to 3V.

We have to place these IR pairs in such a way that when we place an obstacle in front of this IR pair, the IR receiver must be able to receive the IR rays. When we give it power, the transmitted IR rays hit the object and reflect back to the IR receiver.

Instead of traffic lights, you can use LED (RED, GREEN, YELLOW). In the normal traffic system, the LEDs need to glow in time. If the traffic density is high in any particular path, then the green LED of that particular route is lit and the red LEDs for the remaining routes are lit.

In the normal traffic system, we allow the traffic a delay of 1 minute for each route.

The figure above shows the IR sensor circuit. Here the resistance of 330 ohms is used to drop the voltage otherwise the IR transmitter can get damaged. To vary the obstacle detection distance, we used a potentiometer. We have taken the output of the transistor manifold. This sensor provides the digital output.

Possibly Related Threads...
Thread		Author	Replies	Views	Last Post
	code for avr atmega16 with gsm 900 to control light		2	1,010	24-01-2019, 12:03 PM Last Post:
	disadvantages of plastic in malayalam essay		2	2,472	29-12-2018, 06:07 AM Last Post:
	traffic alert system circuit for blind tums		0	680	04-11-2018, 02:42 PM Last Post: Guest
	disadvantages of smart dustbin		0	663	27-10-2018, 03:47 PM Last Post: Guest
	foot step bearing information advantages disadvantages application		0	700	21-10-2018, 08:54 PM Last Post: Guest
	advantages n disadvantages of bhakra dam		0	678	03-10-2018, 08:04 PM Last Post: Guest
	adaptive cruise control seminar report pdf for download		0	1,157	02-10-2018, 11:48 AM Last Post: Guest
	advantages and disadvantages mains failure alarm circuit in pdf		0	800	01-10-2018, 11:48 PM Last Post: Guest
	advantages and disadvantages of natural resources wikipedia		0	688	20-09-2018, 03:09 PM Last Post: Guest
	disadvantages of timetable generator		0	837	24-08-2018, 09:44 PM Last Post: Guest

Important Note..!

ASK HERE