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Published byCarol Anderson Modified over 9 years ago
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Mike Baer – Team Leader Tyler Davis – Chief Engineer TJ Binotto – The Mediator Eric Dixon – The Do All Electric Guy Ben Shelkey – Every Team Needs a Crazy Killian Castner – Who Brought This Kid AKA HuckStrapWhore
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Project Decrip./High Level Customer Needs/Eng. Specs
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System Architecture
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System Block Diagram 4 Electrical System Diagram Backpack Electronics Housing/PCB Motorcycle System Motorcycle Battery 12VDC Transmitter Housing/PCB Quick Connect 12V->3.3V Regulation Xbee Transmitter 1 2 3 4 Transmitter Signals 1.Headlight 2.Left Turn Signal 3.Right Turn Signal 4.Brake Light AC/DC 12VDC System NiMH Battery 12VDC USB Charger USB2.0USB2.0 5V 12V Xbee Receiver 3.3V Chest Strap PCB 12 LED Groups Battery Monitor / Fuses Battery Status LEDs µCon (MSP430) Ribbon Cable (2/2) Voltage Regulation 12V->5V 5V->3.3V 12V Darlington Light Drivers Ribbon Cable (1/2) User Interface Buttons Chest Strap Signals 1-4. Battery Status LEDs 5.Hazard Toggle 6.Brightness Toggle 7.3.3V Function Select Turn Signal 1 2 4 6 3 5 7 2.5mm Connector 2.1mm Connector Power Switch Function Select Brake 12V
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Electrical Design Summary Use Comparators to monitor battery voltage and drive status LEDs on chest strap. (Functional). Use switching regulator to step down from 12V->5V, Linear for 5V->3.3V (Functional). Use low power Xbee units to transmit receive wireless signals (Functional). Have user input buttons on Chest Strap and Electronics Box (Functional). Utilize MSP430 microcontroller for signal processing (Needs improvement). Use additional light drivers, controlled by low voltage MSP430, to drive high voltage LEDs (Functional).
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Software Design Summary User Inputs Function Select (Input-Functional, Output-Not Functional) ○ Turn Signal ○ Brake Hazard (Functional) Brightness (Not Functional) ○ Needs proper use of PWM module System Functions Low Battery Flag (Functional) USB Load Shed (Functional) Drive LEDs from Rx wireless signals (Functional) Drive LEDs at 60Hz (Not Functional) ○ Needs proper use of Timing module
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Future Software/Electrical Improvements Change output drive capability of comparators. Open-collector->Rail-to-Rail Use a simpler and cheaper wireless device. Xbee->??? Implement full microcontroller functionality. Acquire a software “expert” Allow for proper use of MSP430 PWM and timing modules. Implement regulation on 12V power line. Current voltage range is 10.5V-14.5V, will reduce to 10.5V-12V.
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System Testing Summary
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Concept Summary
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Objective Project Evaluation: Success and Failure
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Lessons Learned
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Opportunities for Improvement
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