TRAFFIC PROBLEM SOLVED BY THE ERP
In A country like India, the only way to manage the ever growing traffic is to switch to electronic road pricing.
The theory of road pricing is well known to economists. It dates back to the famous two road example in Professor Arthur Pigou’s ‘ Economics of welfare book publish in 1920. If a tax is imposed on one of the two roads, the speed and the travel time would be better on the toll road than on the free road and the result would be increased efficiency, It is very clear that even in those goof old days traffic was a big issue to deal with. Of late traffic and therefore pollution, has become difficult to tackle world over as the population of vehicle is increasing at an alarming rate.
One traffic management system that has come to the rescue is electronics road pricing. Recently at signapore, I happened to see the system and found it is very interesting to tax people for their luxury and encourage them to utilize public transport to the maximum extent.
By doing this the number of people who use vehicle has relatively reduced use vehicle has relatively reduced and the traffic problem is solved considerably. Even during the peak hours, the average speed is around 65 kmph, which is something to boost of.
IN THIS PROJECT.
In this project we use one smart card device and this smart card reading system is fitted with the microcontroller 89c51 with lcd display. When we enter a card in the microcontroller then microcontroller display the amount of the card. Now when car is move on the road and ERP system is in operation then sensor attach to the car is detect the amount from the car. If the balance in the card is zero then car signal is transmit from the car and a chalan sent to this car owner display on LCD
Main part of this project is.
- CARD READING DEVICE.
- MICROCONTROLLER INTERFACE.
- LCD INTERFAQCE.
CARD READING DEVICE.
In the card reading device we use 4 optocoupler components. Here in the project we use MOV 7811 optocoupler device. These optocoupler devices are slotted optocoupler. We use only four optocoupler to demonstrate the concept of card system. Actual card reading machine are very costly and this machine is readymade available from the market. For out project we want to explain the technology so we use self made card reader. For this self made card reader machine we use hole based card system. When we enter a hole based card then opto-coupler sense a card and at this time otpocoupler send a signal to microcontroller directly. Microcontroller sense the card and at this time as per the card value micrcontroller send a value of RS 50 to 100 in the processor. Processor recognize this number.
Transmissive Optical Sensor without Aperture
This device has a compact construction where the emitting-light sources and the detectors are located face-to-face on the same optical axis. The operating wavelength is 950 nm. The detector
consists of a phototransistor.
Contact less opto electronic switch, control and counter
No setting efforts
2 case variations
Polycarbonate case protected against
Current Transfer Ratio (CTR) of typical 2.5%
OUR NEXT PART OF THIS PROJECT IS MICROCONTROLLER.
89c51 micro controller is a main ic of this project. To drive the lcd, to check the balance amount and balance comparison all this activity is done in the this ic. Here we use micro controller for this purpose. We wrote a program for this ic. Program is to be written in the ASM codes and then this code is converted into hex code with the help of the assembler. In this project we use 8051 ide software to assemble the ASM codes into hex code. Once the code is converted into hex code then we transfer this code in the blank ic with the help of program kit connected with the computer. After transfer the hex code in the blank IC our IC is ready for th
In this project we use lcd for output device. Here in this project we use 2 by 16 lcd for the output device. LCD drive by the microcontroller directly with the port p0. In this project we use 8 data line for the data transfer from the microcontroller to LCD. Our processor inside the controller is 8 bit processor, so we use parallel line transfer from microcontroller to LCD. Three control line R/S, R/W, AND ENABLE is also provided by the microcontroller itself.
Lcd display a welcome message in the screen, when the project is wake up . After this LCD show’s the recharge value of the money Then display the balance in first line and in the second line and also show the unit consumption and pulse counter logic.
If the balance is in the processor and it also shows in the LCD then output signal is available from the microcontroller. Microcontroller deliver a small signal to drive a relay (EMR) electromagnetic relay. Relay interface with the microcontroller is on and work as a contactor system and pass the main supply to the house. As the balances is decreased and more unit is consumer and when balance is zero then there is no output is available.
In this project we use lcd as a main output device. Here in this project we use 2 by 16 LCD as a main output device. . LCD connect to the port P0 of the microcontroller.
RS BIT P2.6
RW BIT P2.5
E BIT P2.7
FL BIT P0.7
LCD EQU P0
Here we use 8 data line from the processor to drive a data to the lcd. Along with this data line we use three control signal to the lcd to control the function of the lcd. These three function are RS, RW and Enable