Blind spot detection
Download
1 / 24

Blind Spot Detection - PowerPoint PPT Presentation


  • 163 Views
  • Uploaded on
  • Presentation posted in: General

Blind Spot Detection. Group #7 UGuen Choi , ChangKi Lee ECE 445 Senior Design December 1 2010. Introduction. Blind Spot Detection warns the driver to prevent the accident due to the object in the blind spot

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Blind Spot Detection

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Blind Spot Detection

Group #7

UGuenChoi, ChangKi Lee

ECE 445 Senior Design

December 1 2010


Introduction

  • Blind Spot Detection warns the driver to prevent the accident due to the object in the blind spot

  • Blind Spot Detection is done by two types: image processing and ultrasonic sensor


Features

  • MCU determines approaching of the object

  • Ultrasonic sensors

  • Use audio output signal from PC instead of RS232

  • Image processing from Camera to detect the car


System Overview

  • Hardware

    • Voltage Regulator

    • Sensor and MSP430

    • Voltage Amplifier

    • Warning Indicator

  • Software

    • A/D convertor

    • Calculation for approaching of the object


Blind Spot Detector


Hardware Overview

  • Voltage Regulator

    • Regulate 9V battery to 3.3V and 5V for IC chips

  • Sensor

    • Sending analog signal to MCU

  • MSP430

    • Get all input signals and send output signals

  • Voltage Amplifier

    • Amplify the audio signal from PC

  • Warning Indicator

    • Current amplifying for practical output


Schematics


Voltage Regulator

Sensor

Using either 3.3V or 5V, but use 5V to get further detection

Have envelop signal and analog signal for testing

  • Regulate 9V voltage to 5V and 3.3V for components

  • Capacitors are crucial otherwise, it will get burn


MSP430

Voltage Amplifier

Voltage for audio signal is between 100mV and 400mV

Audio signal is AC

Need rectifier and amplifier to get clear signal for MCU

  • Convert analog signal to digital signal using integrated A/D convertor

  • Calculate approaching of the object

  • Get analog signal from sensor and audio signal from PC

  • Get “gear” and “turning signal” from the user

  • Send output signal for warning to the driver


Voltage Amplifier

Audio Signal

Filtered Output


Voltage Amplifier

After Voltage Amplified

Down-powered Voltage


Distance Determination

1 foot

2 feet


3 feet

5 feet

4 feet

6 feet


Unable to determine an objectin special case

Standing in front of wall

No object in front of wall


Define the failure of detecting an object at far distance

Data table

Data graph


Software overview

  • MSP430 program

    • A/D convertor

    • Counter

    • Pin recognition

    • Variable


Flow Chart


Counter


A/D convertor


Future Improvement

  • Pick a different sensor to be more practical in closed space situation

  • We may change the type of sensor to be more precise on detecting an approaching object


Future Improvement


Future Improvement


Question?


Thank you

The end


ad
  • Login