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SAE FORMULA CARDATA ACQUISITION & DISPLAY

SYSTEM AHMED ALBITAR JOHN GERTIE

SEAN LENZ JUSTIN IBARRA

ADVISOR: PROFESSOR STEVEN GUTSCHLAG

NOVEMBER 20, 2014

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PROBLEM DESCRIPTION

• BRADLEY UNIVERSITY MECHANICAL ENGINEERING DEPARTMENT PARTICIPATES IN ANNUAL SAE FORMULA CAR COMPETITION

• FORMULA CAR LACKS EFFECTIVE NOTIFICATION SYSTEM

• INEFFECTIVE NOTIFICATION SYSTEM HAS RESULTED IN VEHICLE FAILURES

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PROJECT OBJECTIVES

• ACQUIRE 5 KEY DATA VALUES FROM SAE FORMULA CAR• RPM

• SPEED

• OIL PRESSURE

• WATER TEMPERATURE

• BATTERY VOLTAGE

• AGGRESSIVE NOTIFICATION SYSTEM TO ALERT DRIVER IF DATA EXCEEDS THRESHOLD VALUES

• MULTI-MODE TOUCH SCREEN DISPLAY

• WIRELESS TRANSMISSION OF DATA TO OFF-TRACK COMPUTER

• DATA LOGGER

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OUTLINE

• AMULET LCD TOUCH SCREEN• MULTI-MODE DISPLAY FOR DRIVER

• LABVIEW DISPLAY• DATA LOGGER & DISPLAY FOR PIT CREW

• WIRELESS COMMUNICATION (RF)• RANGE BETWEEN AT LEAST 0.5 – 1 MILE

• MICROCONTROLLER INTERFACE (HW/SW INTERFACE)• SERIAL COMMUNICATION

• SENSOR INTERFACE

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HIGH LEVEL SYSTEM BLOCK DIAGRAM

SensorsMicrocontroller(ATmega128)

Amulet LCD

Wireless Transceive

r

Laptop(LabVIEW

GUI)

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CHANGES

• EXTENDED TIME FOR:

• LCD TOUCH SCREEN

• WIRELESS COMMUNICATION

• HW/SW INTERFACE• SENSORS TO MICROCONTROLLER

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PROJECT SCHEDULE

Complete Incomplete

ID Task NameQ4 14

Sep Nov DecOct123

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RF CommunicationAmulet LCD GUILabVIEW off track GUI

HW/SW interface4 Progress Presentation

% Complete

100%

70%

50%

100%

40%

11/7/2014

11/28/2014

11/26/2014

11/20/2014

1/30/2015

Finish

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SEAN SECTION OUTLINE

• HIGH LEVEL BLOCK DIAGRAM

• RESEARCH REQUIRED

• TASKS COMPLETED

• FUTURE TASKS AND SCHEDULE

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HIGH LEVEL SYSTEM BLOCK DIAGRAM

SensorsMicrocontroller(ATmega128)

Amulet LCD

Wireless Transceive

r

Laptop(LabVIEW

GUI)

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SEAN'S SCHEDULE

Complete Incomplete

ID Task Name FinishQ4 14

Oct Nov1 11/28/2014Amulet LCD

2 11/26/2014LabVIEW GUI

3 11/28/2014Serial Communication

Q3 14

4 11/20/2014Progress Presentation

% Complete

70%50%50%

100%

Sep

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RESEARCH REQUIRED

• AMULET LCD TOUCH SCREEN• GEMSTUDIO PRO

• GEMSCRIPT

• SERIAL COMMUNICATION (UART) WITH AMULET LCD• COMMUNICATION PROTOCOL

• CRC

• ASCII

• XON/XOFF

• FULL DUPLEX VS. HALF DUPLEX

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TASKS COMPLETED

• AMULET LCD TOUCH SCREEN• DISPLAY LAYOUT

• PSEUDO DATA DISPLAY

• LABVIEW GUI• DISPLAY LAYOUT

• MICROCONTROLLER SERIAL INTERFACE UART• COMMUNICATION WITH HYPERTERMINAL VIA UART

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FUTURE TASKS

HW/SW INTERFACE

• SERIAL COMMUNICATION (UART)

• MICROCONTROLLER TO LCD TOUCH SCREEN

• WIRELESS RECEIVER TO LABVIEW GUI

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FUTURE SCHEDULE

ID Task Name Finish DurationQ4 14

3 4w12/12/2014Labview GUI4 13w2/13/2015HW/SW Interface5 5w2/27/2015Test system

0w11/20/2014Progress Presentation 11Dec

0w2/20/2015Progress Presentation 26

Q1 15Jan Feb

2 13.4w11/28/2014Amulet LCD

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SECTION OUTLINE

• WIRELESS TRANSMISSION

• DESIGN

• RESULTS

• HW/SW INTERFACING

• AEROCOMM TO ATMEGA128 SCHEMATIC

• RESULTS

• SCHEDULE

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WIRELESS TRANSMISSION

• TRANSMIT DATA FROM ATMEGA128 TO REMOTE DISPLAY

• USES AEROCOMM AC4790 TRANSCEIVER

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DESIGN

• Timer Interrupt• Enables transmission

• UART0• Serial data to remote display

• External Interrupt• Rising edge for wireless transmission

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WIRELESS TRANSMISSION RESULTS

• Successful Board to Board Communication

• Successful Board to Remote Display Communication

• Successful Atmega128 to Remote Display Communication

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HW/SW INTERFACING

• INTERFACE AEROCOMM AC4790 WITH ATMEGA128

• INTERFACE SENSORS WITH ATMEGA128

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AC4790 TO ATMEGA128 SCHEMATIC

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HW/SW INTERFACING RESULTS

• AEROCOMM AC4790 IS INTERFACED WITH THE ATMEGA128

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CURRENT SCHEDULE

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FUTURE SCHEDULE

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SENSORS INTERFACE

• TEMPERATURE SENSOR

• PRESSURE SENSOR

• RPM SENSOR

• SPEED SENSOR

• BATTERY VOLTAGE SENSOR

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ORIGINAL SCHEDULE

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HIGH LEVEL BLOCK DIAGRAMAhmed’s part

Rest of project

SensorsMicrocontroller(ATmega128)

AmulatLCD

Laptop(LabVIEW

GUI)

Wireless Transceive

r

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PIN CONNECTIONS

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PREVIOUS TEMPERATURE SENSOR

• $ 126

• 4-20MA ANALOG OUTPUT CURRENT

• 10-36V OPERATING VOLTAGE

• 1/4 “ MNPT

• 4.5” LONG SIZE

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PREVIOUS PRESSURE SENSOR

• $ 126

• 4-20MA ANALOG OUTPUT CURRENT

• 9.6-32 VDC OPERATING VOLTAGE

• 1/4 “ MNPT

• 3” LONG SIZE

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RESEARCH

• MECHANICAL ENGINEERING SENSORS

• VOLTAGE ANALOG OUTPUT

• 1/8” MNPT

• FITS TO THE CAR

• DATA SHEET

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COST CONSIDERATION

• MECHANICAL ENGINEERING SENSORS

• PURCHASE NEW SENSORS

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UPDATED SCHEDULE% Complete Incomplete

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FUTURE TASKS

• A/D CONVERTER C CODE

• SENSORS

• TESTING THE SYSTEM ON THE VEHICLE

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FUTURE SCHEDULE

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JUSTIN'S SCHEDULE

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RESEARCH COMPLETED

• READ THROUGH WIDGET MANUAL

• READ THROUGH GEMSCRIPT MANUAL

• NOW CONFIDENT ON CODING AND WORKING WITHIN GEMSTUDIO

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AMULET AESTHITICS

• FOUR PAGES

• BACKGROUNDS

• WIDGET LAYOUT

• WIDGET IMAGES

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AMULET PAGE 1-MODE SELECT

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PAGE 2- DEMO MODE

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PAGE 3- PRACTICE MODE

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PAGE 4- RACE MODE

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AMULET FUNCTIONALITY

• PAGE NAVIGATION

• DEMO MODE FULL SWEEP

• ALERT SYSTEM

• PRACTICE MODE AND RACE MODE WIDGETS ARE SET UP

• STARTED WORKING ON UART CONNECTION WITHIN THE PRACTICE AND RACE MODE

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FUTURE WORK

• CONTINUE SETTING UP BASIC UART CONNECTION

• WORK WITH MICROCONTROLLER TO SEND PSEUDO VALUES TO AMULET DISPLAY

• FINISH AMULET'S AESTHETICS AND PAGE FUNCTIONALITY

• START CONNECTING THE DATA ACQUISITION SYSTEM ONTO THE FORMULA CAR TO TEST

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FUTURE SCHEDULE

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CONCLUSION

• PROJECT DEADLINES EXTENDED BY ABOUT 2 WEEKS:• WIRELESS COMMUNICATION

• AMULET LCD TOUCH SCREEN

• HW/SW INTERFACE

• TASKS COMPLETED:• WIRELESS COMMUNICATION (RF)

• LCD TOUCH SCREEN

• FUTURE TASKS:• HW/SW INTERFACE

• SERIAL COMMUNICATION (UART)

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REFERENCES

[1] AC4790-200A [ONLINE]. AVAILABLE FTP:

HTTP://WWW.DIGIKEY.COM/PRODUCT-DETAIL/EN/AC4790-200A/AC4790-200A-ND/1844885

[2] STK 128 + PREMIUM [ONLINE]. AVAILABLE FTP: HTTP://WWW.WVSHARE.COM/PRODUCT/STK128-PREMIUM.HTM

[3] NI LABVIEW BASE DEVELOPMENT SYSTEM FOR WINDOWS [ONLINE]. AVAILABLE FTP: HTTP://SINE.NI.COM/NIPS/CDS/VIEW/P/LANG/EN/NID/1385

[4] STK-480272C [ONLINE]. AVAILABLE FTP:

HTTP://WWW.DIGIKEY.COM/PRODUCT-DETAIL/EN/STK-480272C/681-1016-ND/2001099?ENTERPRISE=44

[5] 11% OFF GEMSTUDIO PRO DISCOUNT PROMOTION DISCOUNT[ONLINE]. AVAILABLE FTP:

HTTP://FREESAFESOFT.COM/DISCOUNT/GEMSTUDIO_PRO-32323639392D35-COUPON-CODE.PHP

[6] TTD25N-20-0300F-H [ONLINE]. AVAILABLE FTP: HTTP://WWW.AUTOMATIONDIRECT.COM/ADC/SHOPPING/CATALOG/PROCESS_CONTROL_-A-_MEASUREMENT/TEMPERATURE_SENSORS_-A-_TRANSMITTERS/TEMPERATURE_TRANSMITTERS_(INTEGRAL_SENSOR)/TTD25N-20-0300F-H

[7] (2013). 2014 STUDENT HANDBOOK [ONLINE]. AVAILABLE FTP:

HTTP://STUDENTS.SAE.ORG/CDS/FORMULASERIES/FSAE/2014MIS_HANDBOOK

[8] (2013). 2014 FORMULA SAE MICHIGAN [ONLINE]. AVAILABLE FTP:

HTTP://STUDENTS.SAE.ORG/CDS/FORMULASERIES/FSAE/FSAEPROGRAM.PDF

[9] (2013). 2014 FORMULA SAE MICHIGAN [ONLINE]. AVAILABLE FTP:

HTTP://STUDENTS.SAE.ORG/CDS/FORMULASERIES/FSAE/FSAEPROGRAM.PDF

[10] MARK MIKOFF (2013). FORMULA SAE [ONLINE]. AVAILABLE FTP:

HTTP://CEGT401.BRADLEY.EDU/PROJECTS/2013-2014/FSAE/BRADLEYMOTORSPORTS_FILES/PAGE299.HTM

[9] STEVE BRODKIN (2011). FORMULA SAE [ONLINE]. AVAILABLE FTP:

HTTP://CEGT401.BRADLEY.EDU/PROJECTS/2010-2011/FSAE/POWERTRAIN.HTML

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Questions?

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EXTRA SLIDES

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ORIGINAL GANTT CHART

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MICROCONTROLLER INTERRUPTS USED

• TIMER 1 • COUNTER FOR UART TRANSMISSION TO AMULET LCD TOUCH SCREEN

• UART 0 (SERIAL COMMUNICATION WITH AMULET LCD TOUCH SCREEN)• RECEIVE EMPTY INTERRUPT

• DATA REGISTER EMPTY INTERRUPT (FOR WHEN UDR0 IS EMPTY)

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MICROCONTROLLER TO HYPERTERMINAL

Microcontroller

(ATmega128)

UART(serial cable)

HyperTerminal

(Lab Computer)

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AMULET UART CONNECTIONS

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AMULET SERIAL COMMUNICATION PROTOCOL

(ASCII)

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SET WORD VARIABLE

*Set word variable can be executed with the Amulet or microcontroller as the master

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SET WORD VARIABLE FROM MICROCONTROLLER

**Amulet LCD has to be the slave

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UART BYTE TRANSMISSION FORMAT

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SINGLE BYTE TRANSMISSION VIA UART

• HORIZONTAL AXIS• 1MS PER DIVISION

• VERTICAL AXIS• 2V PER DIVISION

• ~10MS SENDING TIME PER BYTE OF

• UART 3.3V LOGIC LEVELS

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TRANSMIT FREQUENCY

• HORIZONTAL AXIS• 50MS PER DIVISIONS

• VERTICAL AXIS• 2V PER DIVISIONS

• UART LOGIC LEVELS• 3.3 V

• START NEW TRANSMISSION EVERY 100MS

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PROJECT REQUIREMENTS

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PROJECT CONSTRAINTS

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PROJECT SPECIFICATIONS

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SAE FORMULA CAR

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JOHN'S ADDITIONAL SLIDES

• WIRELESS TRANSMISSION MAIN CODE

• UART0 .C CODE

• TIMER INTERRUPT .C CODE

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LABVIEW GUI DISPLAY LAYOUT