real time flight data recovery

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NOTE: This project can be done in ARM / PIC / and other microcontroller also

Name: A Real Real time flight data recorder for enabling reconstructing replay in real time IEEE name: A "flight data recorder" for enabling full-system multiprocessor deterministic replay ISSN : 1063-6897 Print ISBN: 0-7695-1945-8 INSPEC Accession Number: 7876737 Digital Object Identifier : 10.1109/ISCA.2003.1206994 10.1109/ISCA.2003.1206994   Date of Current Version : 25 June 2003 Issue Date : 9-11 June 2003 Abstract

FDR’s have been proven indispensable in improving Car safety reliability. Unfortunately,, on most real-life Situations, FDR’s fail to deliver their most Unfortunately essential feature - a faithful faithful replay of the Events in rreal eal time. The aircraft flight data recorder, FDR continuously records the Various parametersexecution, even on deployed systems, logging the execution for post-mortem analysis.

 

We are designing the Flight data recorder for CAR Accident mishap Information in Real time. CAR UNIT:

THIS UNIT CONTINIOUSLY SCANS FOR VARIOUS PARAMETERS OF CAR. IT SCANS AND STORES THE DATA SUCH AS FUEL, ENGINE TEMP, SPEED & STEERING POSITION. AS SOON AS THE ACCIDENT IS DETECTED THE µc µ c STORES ALL THIS DATA ON THE SD SMART CARD. ALSO THE µc SCANS FOR ALCOHOL AND EYE BLINK SENSOR. IF THE DRIVER IS FOUND TO HAVE ALCOHOL IN THE BREATH,THE IGNITION IS TURNED OFF BY THE µc.AND µ c.AND HENCE THE POSSIBILITY OF ACCIDENT IS AVOIDED.ALL THIS INFORMATION IS STORED IN SD CARD. ALSO WE HAVE DESIGNED A EYEBLINK SENSOR WHICH CONTINIOUSLY MONITORS THE NO. OF TIMES THE EYE BLINKS. IF THE EYE BLINK COUNT DECREASES THAT MEANS THE DRIVER IS SLEEPY.IN THAT CASE A BUZZER IS OPERATED.

AFTER THE ACCIDENT THE µc THE µc WRITES ALL THE INFO ON THE SD CARD MEMORY.. AFTER THE ACCIDENT WHEN THE USER CONNECTS IT TO PC THE µC ALL THYE STORED INFO. TO THE PC UNIT.

 

THE PC UNIT HAS A ONBOARD VB S/W WHICH GRAPHICALLY SHOWS ALL THE DATA IN REAL TIME TO THE ANALYST SO THAT THE REASONS OF CRASH/ACCIDENT CAN BE UNDERSTOOD BETTER.

ON PC WE WEILL DISPLAY ALL THE CRITICAL PARAMETER GRAPHS FOR 20 SEC BEFORE ACCIDENT. ALL THE GRAPHS WILL BE DISPLAYED SEPARATELY. THE READINGS WILL BE READ FROM THE SD CARD.

TYRE  ALC OHOL GAS

PRESSURE EYE BLINK

SENSOR 

 ACCI DENT SENSORS

SPEED SENSOR 

 

 

Block Diagram:

 

 

Block Diagram Explanation: This system basically consist of alcohol sensor, gas sensor, accident switches, eye blink sensor, tyre pressure sensor, display and pc interfaced with microcontroller.

Liquid Crystal Display: LCD is used in a project to visualize the output of the application. We have used 16x2 lcd which indicates 16 columns and 2 rows. So, we can write 16 characters in each line. So, total 32 characters we can display on 16x2 lcd. LCD can also used in a project to check the output of different modules interfaced with the microcontroller. microcontroller. Thus lcd plays a vital role in a project to see the output and to debug the system module wise in case of system failure in order to rectify the problem.

Graphics Liquid Crystal Display: Graphics LCD is used in a project to visualize the output of the application. Graphics LCD can also used in a project to check the output of different modules interfaced with the microcontroller and also to see some form of waves. Thus Graphics lcd plays a vital role in a project to see the output and to debug the system module wise in case of system failure in order to rectify the problem.

 

Alcohol Sensor: Alcohol sensor is used to detect weather the person have consumed the alcohol or not. The sensor which we have used is MQ3 sensor. This sensor is an analog sensor and the output is in analog form. So the output of this sensor is provided to the input of the ADC which will convert this analog output in digital input to the microcontroller. As we are using the ARM microcontroller, the arm microcontroller have in build adc. This analog signal will be given at the input of  the in build adc to convert analog into digital signal. Sensitive material of MQ-3 gas sensor is SnO2, which with lower

conductivity in clean air. When the target alcohol gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electro circuit, c ircuit, Convert change of conductivity to correspond output signal of gas concentration. MQ-3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration, concentration, it is with low cost and suitable for different application.

Temperature Sensor: Temperature sensor are used to sense the temperature. We have used a Temperature sensor called LM35. This temperature sensor can sense the temperature of the atmosphere around it or the temperature of any machine to which it is connected or even can give the temperature of the human body in case if used. So, irrespective of the application to which it is used, it gives the reading of  the temperature. The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportio proportional nal to

 

the Celsius (Centigrade) temperatur temperature. e. Temperature sensor is an analog sensor and gives the output into form of  analog signal. This signal is feed to ADC which will convert it into digital form form.. Once converted into analog form, the microcontroller can process the digital temperature signal as per the application.

Gas Sensor: Gas sensor we are using is MQ-6. Sensitive material of MQ-6 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas

exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electro circuit, Convert change of conductivity to correspond output signal of gas concentrati concentration. on. MQ-6 gas sensor has high sensitivity to Propane, Butane and LPG, also response to Natural gas. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application. Gas sensor is an analog sensor and gives the output into form of analog signal. This signal is feed to ADC which will convert it into digital form. Once converted into analog form, the microcontroller can process the digital gas signal as per the application.

SD CARD:

 

 

SD card is basically is used as an storage device which will required to store

the required data. The system database can be used to store in sd card in the form of .wav file and can be accessed from that whenever it is required. Sd card is interfaced with the system using a protocol called SPI protocol. Pendrive Interfaced: The pendrive is the most commonly used device now a days. This device is used to store the data via usb interfaced devices like computers, laptops or other usb hub devices. VNC1 Is a device which is used for mapping the files on the pendrive. Microcontroller give the basic DOS commands and access all the files functions like copy, paste, store , delete, cut, etc. With the help of VNC1, we can do all the basic file functions like copy, paste, store , delete, cut, etc without using the computer. We can control all these file functions using microcontr microcontroller. oller.

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