MATLAB Solution For Data Acquisition and Signal Processing

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MATLAB Solution For Data Acquisition and Signal
Processing
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Agenda

• MATLAB Solution For Test And Measurement
• Signal Processing Using MATLAB Toolbox
• MATLAB Graphical User Interface development
  environment
• Signal Processing Using SIMULINK

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The MathWorks Product Family
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RD Workflow
Data I/O

• Hardware,
• Files,
• Database,

Ideas
Compiler Toolbox
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• MATLAB Toolbox for data acquisition analysis

• Data Acquisition Toolbox
• Instrument Control Toolbox
• Image Acquisition Toolbox

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MATLAB Test Measurement Suite

• MATLAB
• For analysis and visualization
• Provides the foundation of the suite
• Serial port interface
• Data Acquisition Toolbox
• For communicating with industry standard data
  acquisition hardware
• Instrument Control Toolbox
• For controlling and communicating with GPIB and
  VXI instruments
• Additional application-specific toolboxes
• Signal processing, Statistics, Wavelet,
  Communications, Neural Network, etc.
• Sharing test results from MATLAB
• Data export, Report Generation

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Why Test Measurement tools for MATLAB?

• In the good old days
• Multiple people
• Test Engineers or technicians collecting data
• Engineers and scientist working with measured
  data
• Multiple software packages or environments
• Static access to data
• In todays world with the TM tools
• One engineer does it all - measurement and
  analysis
• Measurement can be both live and static
• One software package for a solution
• Dont need to learn multiple, distinct tools

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Test Measurement Challenges Example
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Framework of Test Measurement
Analog
Digital
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• MATLAB Toolbox for data acquisition analysis

• Data Acquisition Toolbox
• Instrument Control Toolbox
• Image Acquisition Toolbox

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A Tank Level Control Example
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Feature

• Get data into and out of MATLAB - Seamless
  integration with MATLAB and MATLAB Toolboxes
• Data logging
• Save data to other data type
• Use MATLAB function configuration your hardware
• Software oscilloscope softscope
• Create Yourself scope Guide
• Interface with industry standard data acquisition
  devices

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DAQ Support Hardware

• Advantech
• IOTech (Third Party Adaptor)
• Keithley Instruments
• Measurement Computing
• National Instruments
• United Electronic Industries (Third Party
  Adaptor)
• VXI Technologies
• Microsoft Windows compatible sound cards

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Demo
Softscope
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Data Acquisition Session
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• MATLAB Toolbox for data acquisition analysis

• Data Acquisition Toolbox
• Instrument Control Toolbox
• Image Acquisition Toolbox

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Instrument Control Toolbox
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Instrument Control Toolbox
Graphical User Interfaces
Interfaces make it easy to communicate with
instruments
Analysis fromacquired data
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Instrument Supported Hardware

• GPIB boards
• Agilent Technologies (formerly HP)
• Capital Equipment Corporation (CEC)
• ComputerBoards
• IOTech
• Keithley
• National Instruments
• VISA Interface
• National Instruments and Agilent support
• Includes serial port, GPIB, VXI and GPIB-VXI
  support
• Serial port
• Extended functionality (GUIs, Hardware
  Information, etc) in toolbox

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Data Acquisition Session
Instrument Control Session
g gpib(ni,0,2) g.Timeout1
Second fopen(g) fprintf(g,
'MeasurementMeas1Value?') fscanf(g) ans
4.0399999619E0 query(g, 'MeasurementMeas1Va
lue?) ans 4.0400 fclose(g)
delete(g) clear s
ai analoginput(winsound)
addchannel(ai,1) set(ai, SampleRate,
44100) start(ai) datagetdata(ai) data
0.030 0.014 - 0.010 ...
delete(ai) clear ai
Create
Configure
Connect
Read/Write
Disconnect / clean-up
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Data Acquisition Toolbox
Instrument Control Toolbox
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• MATLAB Toolbox for data acquisition analysis

• Data Acquisition Toolbox
• Instrument Control Toolbox
• Image Acquisition Toolbox

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Image Processing Overview
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What is Image Processing?
1. Intro to Imaging in MATLAB
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The MathWorks Solution

• MATLAB, Image Processing Toolbox and Image
  Acquisition Toolbox
• Single environment for image analysis, algorithm
  design, and deployment
• Wide range of pre-built image processing
  functions
• Wide range of other toolboxes available in single
  environment for multi-disciplinary tasks
• Easy to verify, customize, and extend algorithms
• Multiple, seamless deployment options

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Scientific Imaging in MATLAB
MATLAB Image Acquisition Toolbox Image
Processing Toolbox

• A complete, integrated environment for the
  Scientific Imaging community.
• Includes built-in acquisition, visualization, and
  analysis capabilities, as well as an intuitive
  language for building algorithms and
  applications.
• Reduces development time
• Improves productivity
• Encourages creativity

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Image Acquisition Toolbox
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IAT Features

• Stream images and video directly into MATLAB from
  hardware
• Multi-vendor hardware support
• Provides access to configurable device properties
• Live video previewing

3. Features and Pricing
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Image Acquisition Toolbox
BEFORE
OUR SOLUTION
Hardware
Hardware
MATLAB
Software
Image
Image
MATLAB
Image Processing Toolbox
Image Processing Toolbox
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IAT Supported Hardware Video Devices

• Frame Grabbers (analog or digital)
• A plug-in circuit board that receives an image
  from a camera or several cameras for use by the
  PC.
• IAT supports frame grabbers from MATROX and Data
  Translation, National Instruments is not
  supported
• IAT supports any camera that works with supported
  framegrabbers, including Cohu and Hamamatsu
  cameras
• Scientific Video Cameras (USB or FireWire)
• Higher performance and cost than WebCams, used
  for industrial and research applications
• Plugs directly into computer, doesnt use Frame
  Grabber.
• Sony and Hamamatsu are popular manufacturers
• IAT supports cameras that have WDM or VFW
  drivers.
• WebCam (USB or FireWire)
• Low-cost, consumer level video camera
• IAT supports WebCams that have WDM or VFW drivers

3. Features and Pricing
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IAT Supported Hardware Video Devices

• DV Camcorders
• Consumer grade digital video camcorders,
  typically with FireWire interfaces
• Canon, Sony, Panasonic, and JVC are popular
  manufacturers
• IAT supports camcorders that have WDM or VFW
  drivers.
• TV Tuner/Capture Boards
• Consumer grade devices that let you view
  television on your computer or connect to VCRs
  and DVD players
• IAT does not record audio with the video
• IAT supports boards with WDM or VFW drivers.

3. Features and Pricing
Full list of supported hardware at
www.mathworks.com/products
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Agenda

• MATLAB Solution For Test And Measurement
• Signal Processing Using MATLAB Toolbox
• MATLAB Graphical User Interface development
  environment
• Signal Processing Using SIMULINK

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Signal Processing Overview
Spectral Analysis
Transforms
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Key Features

• Comprehensive function set of signal processing
  and filter design methods
• Tools for finite impulse response (FIR) and
  infinite impulse response (IIR) digital filter
  and analog filter design, analysis
• Access to the most widely used transforms, such
  as fast Fourier and discrete cosine
• Tools for spectral analysis and statistical
  signal processing
• Routines for waveform generation, including a
  Gaussian pulse generator, a periodic sinc
  generator, and a pulse train generator
• Functions for parametric time-series modeling
• Graphical user interfaces for designing,
  analyzing, and visualizing signals, filters, and
  windows

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DEMO Filter Design

• Infinite impulse response (IIR)

Could be unstable

• Finite impulse response (FIR) a1 Always Stable

• Using the command line or the GUI FDATool

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Filter Specification

• Wp, Ws, Rp, Rs

Passband Ripple
Stopband Attenuation
Fs/2
Transition Band
Passband
Stopband
Transition Band
Passband
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Filter Design GUI

• gtgtFDATool

Analysis methods
Type method to use
Mode Selector
Filter specifications
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DEMO SPTool
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Agenda

• MATLAB Solution For Test And Measurement
• Signal Processing Using MATLAB Toolbox
• MATLAB Graphical User Interface development
  environment
• Signal Processing Using SIMULINK

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What Is GUIDE?

• provides a set of tools for creating graphical
  user interfaces (GUIs).
• These tools greatly simplify the process of
  designing and building GUIs.
• You can use the GUIDE tools to
• - Lay out the GUI
• - Program the GUI

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DEMO

• Create an easy GUI

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• GUIDE Templates

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Guide --gt ActiveX
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Example

• gtgt GUI_activeX

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DEMO

• Integrate With Data Acquisition In GUI

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Deployment Standalone

• Stand-alone applications can run even if MATLAB
  is not installed on the end-user's system.
• C and C shared libraries (dynamically linked
  libraries, or DLLs, on Microsoft Windows).
• These can be used without MATLAB on the
  end-user's system.
• You can recompile any of your existing M-files
  that are compatible with MATLAB Release 14
  products.

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Agenda

• MATLAB Solution For Test And Measurement
• Signal Processing Using MATLAB Toolbox
• MATLAB Graphical User Interface development
  environment
• Signal Processing Using SIMULINK

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Signal Processing Using SIMULINK

• Signal Processing Blockset
• Video and Image Processing Blockset

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Signal Processing Blockset 6.0.1

• Transforms Fast Fourier transform,
• discrete cosine transform,
• real and complex cepstrum.
• Filtering Digital filter design and
• implementation, adaptive,
• Quantizer A quantizer and uniform
• encoder and decoder.
• Operations Convolution, down sample,
• integer delay, unwrap, zero pad,
• and window function.
• Statistics Correlation, maximum,
• mean, RMS.
• Signal Source and Sink.

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Application AM modulation

• yKm(1acos (2pi(1000)t))cos (2pi(10000)t)

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Application Filtering
Band pass filter
To Audio output device
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Signal Processing Using SIMULINK

• Signal Processing Blockset
• Video and Image Processing Blockset

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Video and Image Processing Blockset

• in floating-point, integer, and fixed-point data
  types
• multimedia file input/output (I/O)
• 2-D filters, 2-D transforms, and geometric
  transformation
• standard color video and image conversion
  techniques, including color space conversion and
  chromaresampling
• image analysis and enhancement algorithms, such
  as edge detection, thresholding, morphology,
  statistics, and compositing
• automatically generate ANSI/ISO C code

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Application Video Sharpening
h1 0 -1 0 -1 5 -1 0 -1 0
Special Filter h1fspecial(unsharp,0)
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Application Video Sharpening
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Support Information
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w http//www.mathworks.com ????
[phone]
support_at_terasoft.com.tw