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SMART ROAD SENSOR PDR PRESENTATION Performed by Lior David and Alon Perlis Supervised by Boaz Mizrachi Summer 2011

Smart Road Sensor PDR presentation

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Performed by Lior David and Alon Perlis Supervised by Boaz Mizrachi. Smart Road Sensor PDR presentation. Summer 2011. Agenda. Problem definition Project objectives Input specifications Hardware overview Data flow Software design Timeline. Problem Definition. - PowerPoint PPT Presentation

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Page 1: Smart Road Sensor PDR presentation

SMART ROAD SENSOR

PDR PRESENTATIONPerformed by Lior David and Alon Perlis

Supervised by Boaz Mizrachi

Summer 2011

Page 2: Smart Road Sensor PDR presentation

Agenda Problem definition Project objectives Input specifications Hardware overview Data flow Software design Timeline

Page 3: Smart Road Sensor PDR presentation

Problem Definition The client would like to measure and

analyze the effect of vehicles on road surfaces and layersOver long periods of timeIn various placementsAutomatic and manual triggeringEasy data retrieval

Page 4: Smart Road Sensor PDR presentation

Project Objectives Design and implementation of (almost)

complete system for seismic measurementsSelection of suitable componentsSensors integrationSoftware framework in the form of RTOSDigital signal processingPower management(Communication)

Page 5: Smart Road Sensor PDR presentation

Input Requirements 3 axis acceleration

micro-g resolution Temperature measurement Communication

Page 6: Smart Road Sensor PDR presentation

Hardware Overview

PIC24FJ256GB110Microchip

microcontroller

ADXL312Analog Devices

digital 3-axis digital accelerometer

In-house driver for KB12VD

ADCAD7682

Batteries

CommunicationSPI

KB12VDPiezoelectric

Accelerometer

Key padLCD

I2C

SD card

SPIEEPROM

SPI

Page 7: Smart Road Sensor PDR presentation

Software Design Real time, preemptive operating system

for the PIC microcontroller Modular design Robust hardware drivers for later

development Basic signal processing

Page 8: Smart Road Sensor PDR presentation

Software Design (cont’d)

Page 9: Smart Road Sensor PDR presentation

Data Flow

Page 10: Smart Road Sensor PDR presentation

Gantt Diagramמצגת

איפיון

מצגת אמצ

עמצגת סוף

משימה משך מתוכנן

31/7/2011

7/8/2011

14/8/2011

21/8/2011

28/8/2011

4/9/2011

11/9/2011

18/9/2011

25/9/2011

2/10/2011

9/10/2011

16/10/2011

23/10/2011

30/10/2011

6/11/2011

13/11/2011

20/11/2011

27/11/2011

4/12/2011

11/12/2011

18/12/2011

רכיבים לימודבלוקים וסכמתהזמנת. תוכנה

" ז, לו בניית רכיביםשבועיים              

אינטגרציה נסיונותאיפיון מצגת ובניית

שלושה שבועות                

סביבת לימודהפיתוח

למיקרוקונטרולר + חומרה ממשקי

לדיבוג

שבוע

 

           

של בחומרה חיבורוהבנת הרכיבים

פרוטוקוליםשבועיים    

מועדי אביב' ב      

מאפשר

מצגת

אמצע מצגת בניית שבועיים              

תכנות ארבעה שבועות                    

התוכנה דיבוגוהחומרה

ארבעה שבועות                  

סוף מצגת בניית שבוע           

         

סוף למצגת הכנה שבוע            

ספר כתיבתפרוייקט שבועיים                                  

Page 11: Smart Road Sensor PDR presentation

Team’s commitment 20 weekly man-hours

Lior - Sunday morning and Monday 12:00-18:00

Alon - Monday as free day and Friday as needed

Weekly meeting with the supervisor

Page 12: Smart Road Sensor PDR presentation

How will it work?

SRS

Page 13: Smart Road Sensor PDR presentation

QUESTIONS?Thank you!

Page 14: Smart Road Sensor PDR presentation

BACKUP SLIDES

Page 15: Smart Road Sensor PDR presentation

System Parameters FLOW•Order of execution

Sampling•Sampling frequency•Time interval between executions•Vector length•resolution

Signal processing•Filter coefficient•Maximum allowed error (for compression)•Frequency trigger•Event trigger

Communication•Packet sizes and structure•Timeouts•Addresses

Page 16: Smart Road Sensor PDR presentation

Piezoelectric sensor

Cx = dxyFyb / a

Cx is the amount of chargeFx is the applied Force in x directionwhere a is the dimension in line with the neutral axis, b is in line with the charge generating axis and d is the corresponding piezoelectric coefficient.

Page 17: Smart Road Sensor PDR presentation

KB12VD