Ford/Lincoln Company ECEN 4610 Preliminary Design Review January 28, 2003 Oliver Mansour, Dan Spendley, Davy Odom, Lincoln Ritchie, Kelli Settell

Purpose Work in collaboration with a team of mechanical engineers on an existing project to increase signal clarity and redesign system components to improve performance and reduce cost.

Performance Feel Project Neeraj Gupta Donald Strickland Sanjeev Sharma Taylor Ryan Aaron Aikin Professor Jack Zable University of Colorado at Boulder Senior Design Project

Overall Project Objectives Design and develop a system to obtain data relating to performance feel. Develop a mathematical model to relate the physical data measurements to the customer’s perception of performance feel.

EE Project Objectives Eliminate noise Condense the overall system by replacing existing components Add calibration process Possible RF interface for data transmission

Lab Test Results

Physical Test Results

12 V DC SUPPLY FROM CAR DC INVERTER 300W, 110V AC SIG. COND W, 110 V AC SIG. COND W, 110 V AC ACCELEROMETERS (4) LAPTOP WITH DAQ CARD. dB SENSOR STRING POT. FOR PEDAL DISP. 9 V DC BATTERY LOAD CELL FOR PEDAL FORCE TACHOMETER CONTROLLER BOX Schematic for System Constant Voltage/ Current Source 68H712 Micro- processor

Outline of Approach Deadlines from other group make some tasks have priority over others Solution- Divide project into two parts

First Task: Clean Up Existing Data Signals Test current system for noise source(s) Reduce noise in system: – Using necessary wiring and shielding techniques – Implementing noise filters

Second Task: Design and Develop New Component System: Signal/Power Conditioner Design and build constant current and voltage source to run sensor devices – Load cell, constant current – Accelerometer, constant voltage Localized signal conditioning – Implement hardware filtering – Signal amplification

Second Task: Design and Develop New Component System: Controller Design and build controller box – Use “micro-processor” (Motorola 68H712?) – Provide brains for calibration – Eliminate need for DAQ card Localized data storage Communication through serial port/RF link

Design Alternatives Investigate different micro-processor options Use varying amounts of hardware and software filtering

12 V DC SUPPLY FROM CAR DC INVERTER 300W, 110V AC SIG. COND W, 110 V AC SIG. COND W, 110 V AC ACCELEROMETERS (4) LAPTOP WITH DAQ CARD. dB SENSOR STRING POT. FOR PEDAL DISP. 9 V DC BATTERY LOAD CELL FOR PEDAL FORCE TACHOMETER CONTROLLER BOX Schematic for System Constant Voltage/ Current Source 68H712 Micro- processor

Constant Current and Voltage Source Voltage and Current Source 12V Power Supply Voltage to AccelerometersSignals from Accelerometers Current to Load CellSignal From Load Cell Signals to Controller Box

12 V DC SUPPLY FROM CAR DC INVERTER 300W, 110V AC SIG. COND W, 110 V AC SIG. COND W, 110 V AC ACCELEROMETERS (4) LAPTOP WITH DAQ CARD. dB SENSOR STRING POT. FOR PEDAL DISP. 9 V DC BATTERY LOAD CELL FOR PEDAL FORCE TACHOMETER CONTROLLER BOX Schematic for System Constant Voltage/ Current Source 68H712 Micro- processor

Controller Box Signals from Sensors / Conditioner Calibration Test Signals Calibration Test Data Serial Output for Data Transmission (RF Link?)

Design Risks Unfamiliarity with component abilities and limitations Limited experience in troubleshooting existing systems

Division of Labor Clean existing signals – Entire team, to familiarize with the current ME system – Due to deadline requirements by ME team Processor – Davy, Oliver, Dan Signal Conditioner – Kelli, Lincoln, Dan

Project Schedule

Project Cost