Distributed Control Sensing Team 1911 Stefan Bilyk, Zach Samih, Mehdin Muratovic 1
Presentation Outline ● Sponsor ● Introduction ● Schedule ● Design ● Simulation ● PCB ● Enclosure ● Testing 2
Sponsor Company: Triumph Engine Control Systems Representative: Duane James Location: West Hartford, CT. Triumph specializes in the production of aerospace components such as: ■ Fuel pumps ■ Fuel metering units ■ Fuel controls ■ Electronic engine control systems Budget: $1000 3
Introduction Our goal is to create a “smart sensor” that will condition and process a signal locally and output the result to the engine control unit (ECU) via controller area network (CAN). Benefits of this include: ○ Eliminates long heavy cables from the wiring harness. ○ System becomes modular, repairs can be done without replacing the entire ECU. ○ Electromagnetic interference (EMI) is reduced. ○ Eliminates additional heavy EMI and lightning resistance components. 4
Schedule Trade Study / Part Selection Completed Circuit Design November 10th Completed Simulation November 15th Completed Design PCB November 30th In Progress Order PCB December 7th Troubleshooting January 15th Project Completion February 18th 5
Design ● We designed the circuit and PCB with these considerations. ○ Conditions Signals Locally ■ To decrease noise, which eliminates the need to use noise reducing components. ○ Self Powered ■ As this control system is going to process the input at the sensor, we do not have a power source to draw current from. ○ Keep the sensor relatively the same size. 6
Design - Block Diagram Clipping Comparator Output Circuit Transducer Input Power Supply 7
Design - Circuit Clipping Power Supply 8 Comparator
Simulation - Results 9
PCB Design Design Considerations ● The PCB is elongated to fit inside a cylinder attached to the sensor. ● Dimensions are 2.930in x 0.70in ● Goal: Add more test points and miniaturize further by placing components on both top and bottom sides of the PCB. 10
Enclosure Red - PCB Blue - Rectangular Encasing Light Blue - Inside of Encasing Black - Variable Reluctance Sensor ← VR Sensor 11
Testing Triumph will provide a test rig that is capable of simulating a rotating gear to test our circuit. This test will simulate much of the mechanical and electrical noise associated with the engine. 12
Expenses Parts LMC7221 Open Drain Comparator $6.66 LI1308 BOOST DC/DC Converter $0.51 Industrial Magnetic VRS Speed Sensor $234.32 Equipment Currently N/A $0.00 Total Budget $1000.00 Total Cost $241.49 Remaining Budget $758.51 13
Questions? 14
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