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Louisiana Tech - College of Engineering & Science Louisiana Tech University College of Engineering and Science Microprocessor-Based Control System Project.

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Presentation on theme: "Louisiana Tech - College of Engineering & Science Louisiana Tech University College of Engineering and Science Microprocessor-Based Control System Project."— Presentation transcript:

1 Louisiana Tech - College of Engineering & Science Louisiana Tech University College of Engineering and Science Microprocessor-Based Control System Project for Integrated Freshman Curriculum Michael Swanbom Davis Harbour Hisham Hegab Danny Eddy www.livingwiththelab.com

2 L OUISIANA T ECH U NIVERSITY MECHANICAL ENGINEERING PROGRAM FallWinterSpring CourseCreditsCourseCreditsCourseCredits ENGR 1202ENGR 1212ENGR 1222 MATH 2403MATH 2413MATH 2423 CHEM 1002CHEM 101 / 1032 / 1PHYSICS 201*3 College of Engineering and Science Open-Ended “Smart” Product Design Project

3 Louisiana Tech - College of Engineering & Science

4 Salinity Feedback Conductivity is measured to determine salinity Two electrodes are embedded into a student-manufactured inline sensor A 555 circuit is used to produce AC across the electrodes Resulting frequency is proportional to conductivity Boe-Bot counts the number of cycles in a given period System is calibrated with known salt concentrations

5 Louisiana Tech - College of Engineering & Science

6 RTD Design ( R esistance T emperature D etector) Required Specifications Nominal Resistance: 100  Thickness of film: ~200nm 5mm x 5mm solder pads Minimum width of trace: 200 μm One RTD must fit in 2.5cm x 2.5cm square Length versus width tradeoff must be calculated to achieve required nominal resistance Students encouraged to be creative within the guidelines 2D Drafting skills in SolidWorks are reinforced

7 Louisiana Tech - College of Engineering & Science RTD Fabrication Steps 1.Nickel Deposition 2.Spinning 3.Soft Bake 4.Exposure 5.Development 6.Hard Bake 7.Etching 8.Dicing 9.Inspection 10.Soldering 11.Sealing Red – Freshmen do not perform these steps Italics – no picture shown 23 4 5 7 9 10 8

8 Louisiana Tech - College of Engineering & Science

9 Actuators Controller must actuate solenoid valves and a heating element to achieve control of the system Electrical limitations of controller are discovered Cascaded switching circuits are introduced These circuits are then implemented

10 Louisiana Tech - College of Engineering & Science

11 Typical Program Flowchart NN

12 Louisiana Tech - College of Engineering & Science Total cost per student: $3.78 Louisiana Tech University College of Engineering and Science

13 Louisiana Tech - College of Engineering & Science Assessment

14 Louisiana Tech - College of Engineering & Science Assessment

15 Louisiana Tech - College of Engineering & Science Assessment

16 Freshman Projects Laboratory Two classrooms designed to support the curriculum (40 students, 24 students) Classrooms allow us to easily switch between lecture, laboratory and shop activities within a single 110 minute class period.

17 Louisiana Tech - College of Engineering & Science Louisiana Tech University College of Engineering and Science Questions? For More Information: Michael K. Swanbom, Ph.D. P.O. Box 10348 Ruston, LA 71272-0046 mswanbom@latech.edu Office (318) 257-3908 FAX (318) 257-4630 This project was funded in part by NSF CCLI Grant No. 0618288

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