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MR-1 Exam Review *
* MR-1
Test Conditions
Closed Book, Closed Notes
May use 216 mm 280 mm note sheet, eyes only.
Calculator allowed.
No electronic organizers, computers, or other devices : : :
: : :that can store significant amounts of text.
Test Format and Topics
Duration, 50 minutes, this room, Wednesday 17 March 1999.
Exam starts 8:40.
One or two problems and one set of short-answer questions.
Material up to and including operating systems overview.
How to Allocate Study Time:
50% Working on conditioning problems.
25% How transducers and sensors work and OS basics.
25% Miscellaneous. (Units, parts of RTS, etc.)
MR-1 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-1
MR-2 *
* MR-2
This Review:
- Overview of Real Time Systems
- Conditioning Problems
- Sensors, Transducers, and Physical Quantities
- Circuits
- OS Overview Overview
MR-2 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-2
MR-3 Overview of Real Time Systems *
* MR-3
Parts of RTS
Sensor, Actuator, Process, Computer
Know how each part fits into whole system.
Know how RT computer hardware and software : : :
: : :are different than general purpose computer and software.
Challenges in Building a RTS
Specification, testing, evaluating reliability.
MR-3 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-3
MR-4 Typical Problem *
* MR-4
Purpose: convert a process variable value : : :
: : :into an electrical or information quantity.
Solution to Typical Problem:
- Identify what is given and what output is needed.
Be sure to identify what form output is needed in: : : :
: : :voltage, current, number written in a computer memory, etc.
- Choose transducer (or use one specified) : : :
: : :to convert process variable to a raw electrical quantity.
- Choose analog-to-digital converter, if necessary.
- Design conditioning circuit : : :
: : :to convert raw electrical quantity : : :
: : :to a form suitable for an analog-to-digital converter : : :
: : :or to the form requested in the problem statement : : :
: : :or to whatever form is specified in the problem.
- Design interface routine.
Interface routine must account for:
Transducer Response
Conditioning Circuit Response
Analog to Digital Conversion
: : :and : : :
The Desired Output
Each problem has its own constraints : : :
: : :those constraints must be identified : : :
: : :and the circuit designed accordingly.
MR-4 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-4
MR-5 Transducers and Sensors *
* MR-5
For every sensor and transducer:
- Be able to explain how it works.
- Know its strengths and weaknesses : : :
: : :relative to other sensors measuring same physical quantity.
- Understand the units in which the process variable is measured.
If a model function was presented in class:
- Know which conditioning circuit(s) to use.
MR-5 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-5
MR-6 Temperature Transducers *
* MR-6
Temperature Definition
Know definition of thermodynamic and practical scales.
Thermistor
Know how to derive linear model from model function.
Know how to use linearization circuit (shunt resistor).
RTD
Know how to use three-wire bridge connection.
Thermocouple
Know how to use tables.
Know how to use isothermal block.
Integrated Temperature Sensor
MR-6 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-6
MR-7 *
* MR-7
Light Sensors
Units
Definition of different quantities, e.g., irradiance.
Radiometric v. photometric units.
Know how to convert between quantities under simple situations.
Photodiode, phototransistor.
Vacuum-tube photocell, photomultiplier.
Displacement and Proximity Sensors
Potentiometer
LVDT
Capacitive
Coded
Relative v. absolute types.
Know gray/binary conversion.
Reed Switch
Hall Effect
Magnetic Reluctance
Cross-correlation speed sensor.
MR-7 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-7
MR-8 *
* MR-8
Strain, Force, and Pressure
Units
Definition of strain, force, and pressure.
Different measures of pressure.
Strain Gauge.
Derivation of gauge factor.
Use in bridge.
Force
Construction of large- and small-displacement sensors.
Pressure
Construction of large-displacement sensors.
Construction of diaphragm sensors.
MR-8 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-8
MR-9 *
* MR-9
Flow
Units, etc.
Measures of flow: volumetric, mass, velocity.
Open v. closed conduit.
Fluid v. slurry.
Sensors
Rotation.
Obstruction.
Hot-wire anemometer.
Weir. (Water drop.)
Cross-correlation.
Doppler (sonar).
MR-9 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lslimr*
*. MR-9
MR-10 *
* MR-10
Chemical
Gas Sensors
Humidity.
Oxygen.
Fluid
Reference electrodes.
Ion concentration.
MR-10 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lsli*
*mr. MR-10
MR-11 Circuits *
* MR-11
Amplifiers
Non-Inverting Amplifier
The Versatile Inverting Amplifier
"Plain" inverting amplifier.
Summing amplifier.
Gain/offset amplifier.
Current-to-voltage converter.
Instrumentation Amplifier
Other Circuits
Wheatstone bridge.
Know how to place complementary pairs in bridge.
Know exact and approximate formulae.
MR-11 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lsli*
*mr. MR-11
MR-12 *
* MR-12
Operating Systems
Function: resource allocation.
Tasks
Threads
Difference between task, program, and executable.
Task Management
Context switching.
Life of a Task.
Kernel.
MR-12 EE 4770 Lecture Transparency. Formatted 9:43, 15 March 1999 from lsli*
*mr. MR-12
| David M. Koppelman - koppel@ee.lsu.edu | Modified 15 Mar 1999 9:44 (15:44 UTC) |