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DIGITAL RED LIGHT JUMP CHECKING SYSTEM WITH RF TRANSMITTER
In this project we show that how we monitor the jumping of red light by digital manner system. By using this system it is possible to record the car number with particular time. With the help of this logic we not only monitor the red light jump car but at the same time we check the particular time also.
For this type of system we employ digital data system in every car. We insert the digital data base in the car. It means that whenever the car engine is on digital data base is also transmit from the car. For this purpose we design the digital data base of every car. After designing the digital code we insert this card in the car engine. So when car move on the road then digital data base is also transmit from the car. Now when car cross the red light system then this digital data base is transfer the red light system. In the red light system we use one digital clock interface circuit and red light control circuit. With the help of this circuit we monitor the jumped car and store the data base in the machine. Four indicator light is connected with the receiver circuit to show that how many car jump the red light crossing.
Fig: 1 Electronic Module in Vehicles
In every car we install one micro controller. In this micro controller we generate a data base .By using this micro controller we generate a data base of the car. This data base is transfer from the car by using infra red port. For this purpose we use one infra red LED as a output and connected to the micro-controller. From this LED we transfer a 8 bit data base signal. Data transfer in the form of asyncronize mode by using UART FEATURE system.
COMPONENTS USED IN TRANSMITTER:
In the transmitter circuit we use one 89s51 controller to generate a data base from the circuit. 89s51 is a family member of the 8051 family. 89s51 is a 40 pin IC. Pin no. 40 of the IC is connected to the positive supply. Pin no. 20 is connected to the negative supply. Pin no. 9 is the reset pin. On this pin we connected one capacitor and resistor to provide a auto reset circuit. One push to on switch is connected across the capacitor to provide a manual reset option. Crystal is connected to the pin no 18 and 19 to provide a external clock pulse. Here we use 12MHz oscillator. Two capacitor’s 27pf are grounded from the pin no. 18 and 19 to provide a ripple rejection logic. Pin no. 1 and pin no. 2 is connected to the external data base generation logic. By using this switch in 4 different way, we generate a different data base of the car. When we switch on the battery then one LED is on. This LED is a power indication. We use 7805 regulator to provide a 5 volt dc regulated power supply on pin no. 40 for 5 volt regulated power supply we use IC 7805 as a 5 volt regulator. Pin no. 11 is the transmit pin of this IC. Output from the pin no. 11 is reconnected to the pin no. 12, Pin no. 12 is timer interrupt. With the help of this logic we generate a frequency of 36KHz from the controller. Along with the frequency data base is also generated. This data is 8 bit data and transmit through the infra red LED by using PNP transistor circuit.
Component used in transmitter circuit.
Micro-controller 89s51 ( 40 pin IC)
IC 7805 ( 5 VOLT REGULATOR)
INFRA RED LED
NPN TRANSISTOR BC 548
PNP TRANSISTOR BC 558
CRYSTAL 12MHz
CAPACITOR 1000 MFD, 27pF (2), 10 MFD
DIP SWITCH ( TWO WAY)
RESISTANCE 1K, 2.2K, 10K(2), 100Ω
PUSH TO ON MICRO –SWITCH