accident prevention using wireless communication

CAR SPEED CONTROL USING BLUETOOTH

PSNA CET,DindigulBy,A.Vinothini (3rd year ece)M.Sowdambikai (3rd year ece)V.Vinitha (3rd year ece)

*NEED FOR THIS PAPER

NUMBER OF PERSONS KILLED FROM 1987 TO 2003

CAR SPEED CONTROL USING BLUETOOTH

*REASON FOR CHOOSING BLUETOOTHROBUST IMMUNITY OVER NOISE INTERFERENCE

NO NEED TO SWITCH ON THE DEVICE MANUALLY. TURNS ON IMMEDIATELY WHEN IT COMES WITHIN A SPECIFIED RANGE

LESS POWER CONSUMPTION .

CAR SPEED CONTROL USING BLUETOOTH

*BLUETOOTH TECHNOLOGYUSES LOW POWER TRANSMITTER WITH FREQUENCY HOPPING SPREAD SPECTRUM ALGORITHM.THE DATA IS TRANSFERRED USING TIME DIVISION DUPLEX METHOD.(DURING SCATERNET)OPERATES IN ISM BAND AT THE FREQUENCY OF 2.4GHZ.CARRIER FREQUENCY IS F=2.4GHZ+K[MHZ],K=0 TO 7979 CHANNELS,EACH 1MHZ BANDWIDTHFREQUENCY HOPING PROVIDES DATA SECURITYTHE DATA RATE IS 723 Kbps

CAR SPEED CONTROL USING BLUETOOTH

*MODULATION USED

GAUSSIAN PREFILTERED FREQUENCY SHIFT KEYING IS

USED WITH MODULATION INDEX OF 0.3CAR SPEED CONTROL USING BLUETOOTH

*SIGNAL FLOW DURING ACCIDENT100 METER RANGE10 METER RANGEBRAKING SIGNALBOTH BLUETOOTH DEVICES IN THE CAR GET ENABLEDCAR SPEED CONTROL USING BLUETOOTH

*BLOCK DIAGRAM OF THE SYSTEMCAR SPEED CONTROL USING BLUETOOTH

*

CAR 1CAR 6CAR 8CAR 7 CAR 5CAR 4CAR 3CAR 2

BLUETOOTH DEVICE NAMEDISTANCECAR 810 mCAR 518 mCAR 720 mCAR 432 mCAR 255 mCAR 378 mCAR 698 m

*

*PROBLEM WITH OVERTAKINGCAR SPEED CONTROL USING BLUETOOTHRED CAR WANTS TO OVERTAKE THE BLUE CARTHE RED CAR DRIVER SENDS THE SIGNAL(THE FIRST 3 BIT INDICATES THE OVERTAKING SIGNAL).ON RECEVING THE SIGNAL,BLUE CAR DRIVER ALLOWS BY MEANS OF GIVING THE SIGNAL.AFTER GETTING THE SIGNAL ACKNOWLEGEMENT SIGNAL IS GIVEN BY RED CAR.

SOLUTION

*BRAKE SYSTEM REQUIREMENTSSupport for electrical actuating signals.Additional features like ABS (Antilock Braking System) to prevent accident due to locking of wheels.

CAR SPEED CONTROL USING BLUETOOTH

*THE AUTOMATIC BRAKING SYSTEM

TO BRAKE SHOESCAR SPEED CONTROL USING BLUETOOTH

*AUTOMATIC BRAKING SYSTEM SIMULATION USING MATLAB 7.0

* OUTPUT NOT INCLUDING SIGNAL FROM COMPUTERCAR SPEED CONTROL USING BLUETOOTH

*

OUTPUT DUE TO CONTROL SIGNAL

*QUERIES ???CAR SPEED CONTROL USING BLUETOOTH