19-09-2012, 11:39 AM
CAR TRAVELLING DATA RECORDER BASED ON EMBEDDED SYSTEM
Car black box.pptx (Size: 598.58 KB / Downloads: 66)
OBJECTIVES
To design and implement a Car Black Box System for the four wheelers record the main driving data of the car comprehensively and accurately in real-time
To reconstruct the accident with data process software, which can help people analyze the accident rapidly and legitimately after a collision
LCD DISPLAY
LCD’s are used as numerical indicators, especially in digital watches where their much smaller current needs than LED displays prolong battery life.
The LCD display used in this project consists of 2 rows. Each row consists of maximum 16 characters.
we cannot read back the LCD’s internal Busy Flag which tells us if the LCD has accepted and finished processing the last instruction.
This problem is overcome by inserting known delays into our program.
REAL TIME CLOCK-DS 1307
FEATURES
Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the week, and Year with Leap-Year Compensation Valid Up to 2100
56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
I2C Serial Interface
Programmable Square-Wave Output Signal
Automatic Power-Fail Detect and Switch Circuitry
Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
Optional Industrial Temperature Range:
-40°C to +85°C
Available in 8-Pin Plastic DIP or SO
Underwriters Laboratories (UL) Recognized
Advantages & Applications
The functions of Car Black Box are as follows:
Car Black Box can monitor and record real-time status
of the car (including driving speed, rev, light, car door,
tire pressure, brake, lay-up and life belt, etc);
Car Black Box can analyze the accident and handle
many problems related to car accident like crash
litigation, insurance settlements.
When a car accident happens, Car Black Box can
provide diagnosis of the car and help maintenance
personnel judge faults of the car.
Car Black Box has an alarm which can alarm
automatically when the car is over speed.