Course Description Introductions Course Website Labs and Supplies Course Terminology Module Demo Problem Solving Format Units/Variables MATLAB What s

Transcription

1 Course Description Introductions Course Website Labs and Supplies Course Terminology Module Demo Problem Solving Format Units/Variables MATLAB What s next

2 Course Description: Learning Outcomes STUDENTS WILL Become familiar with the Analog Discovery device (oscilloscope and waveform functions). Use MATLAB to model experimental data. Analyze Simple Circuits using KVL, KCL and voltage divider methods. Build circuits using passive and active components. Build and analyze signals through circuits with low pass, high pass and band pass filters. Use Bode Plots to characterize filters and predict signal response. Build circuits using sensor inputs to create a measureable output. Use complex impedance to model and analyze Op- Amp circuits.

3 Course Description: Behavior Outcomes STUDENTS WILL Gain self-confidence and self-efficacy to respond in a positive manner to future challenges. Pick up learning habits that will help them become selfmotivated learners. Learn the benefits of maintaining high standards in their engineering work and all types of communication styles. Become aware that working on student teams can result in support structures that deepen individual learning. Become mentors to others as they build up their engineering expertise.

4 Instructor and TA Introductions INTRODUCTIONS Maryam Shokrekhodaei PhD Student

5 Course Website Labs Resources (Syllabus/Schedule, Course Materials/Supplies, Lab Report Resources, KVL/KCL Tutorials, Equation Sheets, Competency Scorecard, Soldering Tips) Lectures (power points for all lectures) Homework Assignments Contacts Calendar

6 SUPPLIES: DIGILENT Analog Discovery 2 ($279 $179 discount)

7 SUPPLIES: DIGIKEY 1 wire stripper (1) 2 breadboards (2) 3 header pin strips (3 with 36 pins) 4 trimmer pot (2) 5 Op-Amp (2) 6 AND Gate (2) 7 Instrumentation Amplifier (2) TOTAL COST: $ TAX & DELIVERY

8 Software Waveforms download for free from Digilent Note: you cannot open Waveforms unless your Analog Discovery is connected to your laptop/pc. MATLAB go to ETC to download

9 Connecting Analog Discovery to Waveforms To install Waveforms on your computer follow this link for the 2015 version: Once you have installed Waveforms on your computer, connect your Analog Discovery device to your computer and open Waveforms. You should see this in the bottom side of Waveforms: The serial number on your device will be different, just make sure that your device is recognized in Waveforms.

10 Supplies/Hardware/Software MATLAB is available for immediate use on my.apps.utep.edu ETC will install software for you in E351, 3 rd floor between the Engineering Building and the Classroom Building. MATLAB takes about 25 to 60 minutes to install, depending on the laptop, and uses 9GB of space. MATLAB needed by next week s Lab, please bring laptop to class.

11 General Course Vocabulary Syllabus Grade contract between instructor and student; must by followed by instructor and understood by student Communication Students can communicate with instructors in person and by . In person meetings should take place preferably during office hours and/or by . Students should expect a response by faculty members within 1 or 2 days, and students are expected to read UTEP s on a daily basis.

12 General Course Vocabulary Assignment Deadlines Assume an assignment is due at the beginning of the next lab (if assigned during lab) or at the beginning of the next lecture (if assigned during lecture). Extensions are not given except for school sponsored activities. Absences Attendance will be recorded for every lecture and lab using an Attendance sheet which will be picked up 5 minutes after the beginning of class. For every 3 absences, the students grade will be reduced one letter grade. Students are expected to be present during the entire lab and/or lecture.

13 General Course Vocabulary Homework Format Homework Format is designed to include the problem statement for reference by reader, all data used to complete every calculation (given data, unit conversions, images/figures, unit conversions, etc ). High standards should be followed at all times so that methodical habits are formed. Lab Report Expectations Report expectations are high and students should (1) read each module BEFORE each lab, (2) ask questions during the module, (3) take notes for each module step, (4) add results to module or report, and (5) ensure the module rubric is being followed.

14 General Course Vocabulary Student Teams Students are placed in teams of 3 or 4 students. Teams are the same in the lecture and lab. In the lab, effort is mostly individual. In the lecture, students should face each or sit next to each other and work together through each step to complete the assignment. STRONG TEAMS RESULTS IN HIGHER LEVEL LEARNING FOR THE ENTIRE CLASS!! Team Homework Assignments Team homework is assigned during the lecture and should be completed by all team members. Once the time is up, one random paper will be selected from each team.

15 Laboratory Terminology Sensor Handling Please handle each sensor with care, they are expensive, and are made by your TAs. Lab Space Maintenance Students are expected to maintain a clean lab environment out of respect to TAs and other students. Please wipe your area clean after every lab and/or open lab. Component Handling Students will be using many types of resistors and capacitors. Please make sure to take out only 1 component at a time. If components fall out of bags, PLEASE DO NOT RETURN them to the bag. Hand them over to your TA!!!!

16 Laboratory Terminology Open Labs Open Lab space is provided on a first come first served basis. Please follow all lab rules. Checklists A checklist for each lab with 3-4 procedures should be stamped by TAs as each step is completed and attached to your lab report. Incomplete checklists will result in point deductions on your report. A missing checklist will result in a zero lab report grade.

17 Laboratory Terminology Check Out Problems When your check list is complete, you will be provided with a 5 min check out problem set. Points earned here will go towards your homework grade. Keep lab notebook Keep a lab notebook and take plenty of notes about your MATLAB filenames, results and observations. This will help you to write your lab reports. Module Rubrics A lab report rubric is provided for your module report. Please follow the rubric carefully, and consult with TAs during first couple of labs regarding report content.

18 Laboratory Breadboard Terminology Resistors Resistors are used in a circuit to manage current and have wires at each end. If current is flowing through them, they result in a voltage drop across each end. Capacitors Resistors in Series Capacitors are made of insulators and store charge. When the voltage across each capacitor is changed, the capacitor does not respond instantaneously to the change in voltage. It takes time for capacitors to charge and discharge. The end of resistor 1 should be placed in row x, and the other end should be connected to the end of resistor 2 at row y, and the other end of resistor 2 should be connected to one end of resistor 3 at row z, and so on. (Like the monkey game)

19 Laboratory Breadboard Terminology Resistors in parallel Ground If resistors 1, 2 and 3 are connected in parallel, one end of each resistor should be at row x, and the other end of each resistor should be at row y. Ground is established on your breadboard by your power supply. This ground should ALWAYS be connected to the ground wire on your Analog Discovery. Voltage Measurements Voltage is always measured relative to some value. Sometimes it is measured relative to your power supply ground, and sometimes relative to your 2.5 V power supply reference. Make sure you understand why each type is used for each instance.

20 Team Exercise Puzzle (20 minute exercise) 1. Each team should have 1 puzzle (handout) to work with. 2. Work with your team to complete the cross word puzzle. (10 min) 3. Work with a second team to find any missing answers. (5 min) 4. Share answers with the class and discuss (5 min)

21 Grade Please read Syllabus Module Reports 50% Module Checklists 10% Quizzes and Exams 20% (based on points) Homework 20% Attendance will be recorded for each lecture and lab using a sign in sheet. Sign in sheets will be picked up after 5 minutes from the start of lecture/lab. Students grade will be reduced by one letter grade for every 3 absences. Example: A student has 3 absences, 1 in the lecture and 3 in the lab. The students average is an 89 or B. The students final grade will therefore be a C.

22 Lectures and Lab Schedule MONDAY TUESDAY WED THURSDAY FRIDAY 10:30 (10:45) 11:00 11:30 12:00 12:30 1:00 1:30 (1:35) Lecture :30 1:30 Lab :45 1:35 Lecture :30 1:30 Lab :45 1:35 Open Lab Time TBD 2:00 2:30 3:00 3:30 4:00 Open Lab 2-5 pm 4:30 5:00

23 Lab Modules (10) Power Supply Angle Sensor Strain Gauge I Strain Gauge II EKG Oxygen Sensor Glucose Sensor Blood Pressure Sensor Ballistocardiograph Ultrasonic Sensor

24 Ballistocardiograph Demo Heart beats about once every second 1 cycle per second 1/s is 1 Hertz (Hz) This exerts a downward force from one of the heart ventricles as it pumps blood to the lower body. There is an equal and opposite force created from the body and body moves up. A weight scale can pick up this force. If we change the way the sensors on each leg are connected, and build our own circuit, we can see the effect of this force. We can build several circuit stages to amplify and filter the scale signal

25 COMMUNICATE WITH TA s AND INSTRUCTOR COMMUNICATE WITH TEAM MEMBERS Problem Solving Methodology HOW DO WE SOLVE COMPLEX ENGINEERING PROBLEMS? UNDERSTAND PROBLEM: WRITE PROBLEM STATEMENT/PROCESS GATHER INFORMATION TO SOLVE PROBLEM: DATA/UNIT CONV DEVELOP/IDENTIFY STRAGEDY TO SOLVE PROBLEM: UNIT ANALYSIS SET UP SOLUTION AND SOLVE PROBLEM: ATTEMPT SOLUTION CHECK SOLUTION: VARIOUS METHODS, DOES IT MAKE SENSE

26 Unit Analysis Source:

27 Problem Solving You will follow these steps for all calculations: 1. Write QUESTION/PROBLEM STATEMENT. 2. Write original EQUATION. 3. SOLVE for desired variable 4. Substitute VALUES and UNITS 5. Add the necessary UNIT CONVERSIONS 6. CANCEL OUT unit conversions and IDENTIFY units left. 7. CONFIRM units 8. CALCULATE answer and UNDERLINE solution.

28 Problem Solving Format HEADING PROBLEM STATEMENT EE 1305 Name Group #/Name Date Problem Statement ADD UNIT CONVERSTIONS AND FIGURES SET UP CALCULATION AND /OR SOLVE FOR DESIRED VARIABLE Equations/Unit Conv Solution/Calculations Answer Figures/Circuits INDICATE SOLUTION

29 Variables and Units Variable Symbol Unit Symbol Current I Amp A Voltage V Volt V Resistance R Ohm Resistivity Ohm-cm -cm Capacitance C Farad F Frequency f Hertz Hz Inductance or Complex Impedance Z Ohm Inductance L Henry H Time t Second s Length l, d Meter, Centimeter, etc. m, cm, km, nm, etc Force F Newton N Energy E Joule J = N m Power P Watt W = J/s

30 Unit Conversions SI Prefixes Pico (p) Nano (n) 10-9 Micro ( ) 10-6 Milli (m) 10-3 Centi (c) 10-2 Kilo (k) 10 3 Mega (M) 10 6 Giga (G) 10 9 Tera (T) Unit Converstions - Length pm 1 m 10 9 nm 1 m 10 6 m 1 m 10 3 mm 1 m 10 2 cm 1 m 1 km 10 3 m 1 Mm 10 6 m 1 Gm 10 9 m 1 Tm m In this course, we will be using prefixes routinely for current (A), resistance ( ), Capacitance (F), frequency (Hz), and time (s)

31 Other Unit Conversions Ohms Law Voltage (Volt) V A V = IR Capacitance F (Farad) F C/V Frequency Hz (Hertz) Hz 1/s f = 1/ Force N (Newton) N kgm/s 2 F = ma Energy J (Joule) J N m E = F x d Power W (Watt) W J/s P = E/t Potential Potential (Volt) V J/C V = P.E./q Energy Electron Volt (ev) 1 ev 1.6 x J Direct Conversions

32 Constants Constant Value Units Charge (q) 1.6 x C coulombs Pi None Mass of Electron in vacuum (m o ) 9.11 x kg kilogram Permittivity of Free Space ( o ) 8.85 x F/cm farad/centimeter Speed of Light (c) 3.0 x 10 8 m/s meters/second

33 Equations Type of Equation Ohm s Law Resistvity Parallel Resistors Series Resistors 1 Equation V = IR R = ρl A = ρl πr 2 R eq = 1 R R R n Req = R 1 + R 2 + R 3 + Rn Power P = IV = V R 1 V = V 2 R 1 = (IR 1) 2 R 1 = I 2 R 1 Voltage Divider v i = v s R i R eq N KCL n=1 I n = 0 Sum of Currents entering node = 0 N KVL n=1 V n = 0 Sum of Voltage Drops around a loop = 0 Kinetic Energy (any particle) Electric Field 1 2 mv2 E = F/q

34 Unit Conversions EXAMPLE UNIT CONVERSION BETWEEN OHMS AND KILO-OHMS 10 3 = 1k DIVIDE BOTH SIDES BY 1K k = 1k 1k k = 1k 1k CAN NOW USE THIS RATIO TO CONVERT BETWEEN OHMS AND KILO-OHMS k = 1

35 Introduction to Units: Example HEADING EE 1305 Name Group #/Name Date PROBLEM STATEMENT ADD UNIT CONVERSTIONS AND FIGURES The oxide thickness of a MOSFET transistor is equal to 2.5 nm. Determine the thickness in units of cm Equations/Unit Conv Figures/Circuits 10 9 nm = 1 m 10 2 cm = 1 m None SET UP CALCULATION AND /OR SOLVE FOR DESIRED VARIABLE Calculations Oxide Thickness = 2.5 nm 1m 10 9 nm 10 2 cm 1 m = 2.5 x 10 7 cm INDICATE SOLUTION Solution Oxide Thick ness = 2.5 x 10 7 cm

36 Introduction to Units: Team Practice?? HEADING PROBLEM STATEMENT ADD UNIT CONVERSTIONS AND FIGURES EE 1305 Name Group #/Name Date Si has a band gap of 1.12 ev. Convert this value to units of pj. Equations/Unit Conv Figures/Circuits 1.6 x J = 1 ev None pj = 1 J SET UP CALCULATION AND /OR SOLVE FOR DESIRED VARIABLE Calculations Silicon Bandgap =? INDICATE SOLUTION Solution Silicon Bandgap =?

37 Success Points ATTEND EVERY LAB AND LECTURE IN ORDER TO BE SUCCESSFUL COMMUNICATE WITH INSTRUCTOR AND TA IF YOU ENCOUNTER CHALLENGES IN THIS COURSE

38 MATLAB Installation

39 What s next? Will introduce LAB Module I Angle Sensor LECTURE Ohm s Law Analog Discovery MATLAB: Graphing Matrices Please bring laptops to all lectures and labs.

40 Questions?