Remote accident report system for highways using rf
SEMINOR ONREMOTE ACCIDENT REPORT SYSTEM FOR HIGHWAYS USING RF
AIMThe Aim of this is to monitor the accidents whichoccur on the highways using RF technology.The purpose of this is to report the monitoringsection whenever accident occurs on the highways
ABSTRACT In present days Electronic communication takes an importantrole. In this we are sending information about vehicle accident by using RFcommunication with the help of Microcontroller. An accident is a specific, identifiable, unexpected, unusual andunintended external event which occurs in a particular time and place,without apparent or deliberate cause but with marked effects, it implies agenerally negative probabistic outcome which may have been avoided orprevented circumstances leading up to the accident been recognized, andacted upon, prior to its occurrence.
COMPONENTS Microcontroller Max 232 Buzzer Transformer H-Bridge LCD
BLOCK DIAGRAM:TRANSMITTER SECTION MICRO CONTROLLER Power supply AT89S52 HT 12E Encoder RF TRANSMITTER H-Bride Motor Accident detection ckt
PORT 1:Motors are connected to port one of micro controller through two h bridges. Thetwo h bridges are connected to P1.0, P1.1, P1.2 and P1.3 respectivelyPORT 3:Switch is connected to P3.7. It is acts like an accident identification sensor.PORT 2: Port 2 can act as both input as well as output port. The microcontroller port 2 pinsare connected to the transmitter circuit. We are using HT12E IC which is a 18 pin Ic.
PORT 0:This port 0 can act as both input as well as output port. In this port zero isconnected to lcd. The data pins of lcd is connected to data pins of lcd.PORT 2: Port 2 can act as both input as well as output port. The microcontroller port 2pins are connected to the receiver circuit. We are using HT12D IC which is a 18pin decoder.BUZZER:Buzzer is connected to the port p3.0.
Micro ControllerThe AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8Kbytes of in-system programmable Flash memory.The device is manufactured using Atmel’s high-density nonvolatile memorytechnology and is compatible with the industry- standard 80C51 instruction set andpin out.The on-chip Flash allows the program memory to be reprogrammed in-system orby a conventional nonvolatile memory programmer.
RF Transmitter 315/434 MHz ASK TRANSMITTERHere in this the RF transmitter module is not directly connected tomicrocontroller. An Encoder is connected between the RF module and thecontroller, in order to encode the data for efficient transmission of the data.
RF Receiver 315/434 MHz ASK RECEIVERIn this RF receiver is connected as shown in the schematic. The DATApin is connected to the decoder HT648L which decodes the receivedsignal and gives to the microcontroller.
Power SupplyThe power supplies are designed to convert high voltage AC mains electricity to asuitable low voltage supply for electronics circuits and other devices. A RPS(Regulated Power Supply) is the Power Supply with Rectification, Filtering andRegulation being done on the AC mains to get a Regulated power supply forMicrocontroller and for the other devices being interfaced to it.
H-BRIDGE: H-bridge is to construct with transistors and Motor. It is used to control the vehicle.
BuzzerBuzzer is for alarming purpose ,when ever the system will find anyaccident occurrence the buzzer will buzz.
APPLICATIONS Car security system Wireless security system Automation system Remote keyless entryAdvantagesTo control the accidents
CONCLUSION The “REMOTE ACCIDENT REPORT SYSTEM FOR HIGHWAYS USINGRF” has been successfully studied, Integrating features of all the hardwarecomponents used have developed it. Presence of every module has beenreasoned out and placed carefully thus contributing to the best working of theunit.