26-07-2012, 12:35 PM
AN INTELLIGENT AMBULANCE CONTROL TO TRAFFIC SIGNAL
AN INTELLIGENT AMBULANCE CONTROL .doc (Size: 830 KB / Downloads: 281)
INTRODUCTION
AIM:
The world is passing through an era of revolutions. The distance is being reduced and the large analog systems are being replaced by smaller & inexpensive digital system. The world demand smaller, lighter & cheaper setups. To fulfill this demand the semiconductors have greatly resolved the problem. The huge transmitters which used large expensive tubes now use smaller & inexpensive semiconductor devices (like transistor, diode etc). Due to this revolution in technology large computers which occupied a full room, now come on to table top, Pocket PC and PDAs. The microcomputer which are even smaller then a thumb can control large amount of appliances interfaced to it in different aspects.
The aim of this project is to design and implement a micro-controller based controller to control the movement of an intelligent ambulance car with control to traffic light. The controller also provides a wireless link platform to allow the ambulance to be controlled by traffic light. In our project we are overriding existing traffic signal by using intelligent traffic controller. In the present scenario most of our precious time is wasted due to fixed time limit. Due to the wastage of time we loose precious life because delay in reaching the hospital on time. This can be overcome by using intelligent traffic controller.
1. Power Supply
2. Microcontroller
3. Power Supply:
It is source voltage of this project. The power supply module output voltage is Regulated 5v constant direct current when the domestic power will on. So here source voltage is connected to entire positive and negative lead of entire circuits. It contains step down transformer, full wave rectifier along with filter capacitor, regulated chip and indicator circuit.
Microcontroller:
The microcontroller is 8-bit processor, which is the heart of the project. The controller will fetch and latch the data from external circuit for each clock cycle while execution time. Here clock and reset module is connected to controller chip. The module consists of AT89S52 chip along with base,10k network resistor, 11.0592crystal oscillator , 10uF/63v electrolytic capacitor , 10k fixed resistor and push button ( RST switch ).
Now the information from the microcontroller is fed to the encoder, Encoder encodes the binary data and the output is fed to the IR transmitter. The transmitted signal is received by the IR receiver; from there the signal is decoded and given to the microcontroller, which is further given to the driver circuit which controls the operation of the AMBULANCE CAR according to the data given.
Infrared receiver:
IR receiver is made up of TSOP1738. It can receive up to a maximum range of 38 KHz frequency. The module is connected to microcontroller. This block consists of TSOP1732 IR receiver along with 10k, 1k, 330E resisters, BC557, BC547 and LED. The output lead of IR receiver is connected to input pin of microcontroller block.
Infrared transmitter:
IR transmitter consists of IR LED. It will transmit IR rays continuously when the voltage have anode and cathode lead of IR LED.
This block is enclosed in an IR LED along with 100E, 2.2k, 22k resister, 555 timer chip 102 and 104 disc capacitors. It is connected to 9v battery power supply which works independently.