Automation

CAR BLACK BOX SYSTEM

Aim:

To monitor and control the various parameters related to car and also to find out the reasons of accident in case of crash.

 

Working Principle:

Car Black Box is a data recorder which continuously records the car Parameters in its Memory. In case of an Accident the CAR BLACK BOX can be retrieved and the recorded data can be analyzed to find the reasons of crash. The parameters can include Alcohol, LPG Gas leak, Eye Blink sensor etc. . .

 

Block diagram:

CAR BLACK BOX SYSTEM

Block diagram Explanation:

Here we are designing a System which will which continuously records the car Parameters in its Memory. In case of an Accident the CAR BLACK BOX can be retrieved and the recorded data can be analyzed to find the reasons of crash.

  • Read the analog sensor data. Perform Signal conditioning on the signal. (If the signal is very low in µv).
  • Store the data in µC internal memory (RAM).
  • Display the parameters on LCD
  • If Alcohol detected Turn on Buzzer and turn OFF Ignition Relay.
  • If LPG gas detected Turn on Buzzer.
  • If the Eye Blink (Driver sleepiness) count goes under a set limit then turn ON buzzer.
  • Send the parameters to PC via RS 232.

 

Hardware Features:

  • µC : 89s52 /PIC
  • Sensors :

LPG Gas:MQ6 , Temperature: LM35

Alcohol: MQ3 , Eye Blink: IR led

  • ADC: 8 Bit MUX :  8 channel
  • LCD: 16*2 , 100 ma , Alphanumeric Display
  • Relay: 12v , 230v ,Single change over
  • Power Supply: 5V, 750 ma current.

 

Software Features:

µC programming: µC programming: C

MPLAB IDE compiler, PIC Flash Programmer

PC: Hyper terminal Software.

Component List:

Sno. Component Name Quantity
1 µC PIC 16F877A 1
2 LCD 16*2 1
3 Diode 1N4007 6
4 LM 7805 1
5 Crystal 11.0592 MHz 1
6 33 pf paper cap 2
7 0.1 µf Paper cap 2
8 10 µf Electrolytic cap 5
9 1000µf Electrolytic cap 1
10 10 kohm ¼ watt 5
11 150 pf paper cap 1
12 MUX 4051 (8 Channel) 1
13 1
14 LDR 5mm 1
15 LM35 1
16 MQ6 LPG gas 1
17 Fuel (Float sensor) 1
18 MQ3 Alcohol 1
19 IR LED 5mm pair 1
20 20 kohm ¼ watt 1
21 22 ohm ½ watt 1
22 Max 232 1
23 Buzzer 5v 1
24 Relay 12v 10A 1
25 BC 547 1
26 1 Kohm ¼ watt 2
27 2 pin relimate conn. (M+f) 2
28 3 pin relimate conn. (M+f) 6
29 16 pin relimate conn. (M+f) 1
30 Resistance strip 10k 9 pin 1

 

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