Post on 19-Jan-2016
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Integrating DAQ, IMAQ, and Motion
Joe Hays
Applications Engineer
Thu 11:30a, 2:00p and 4:45p
Red River (4B)
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Integrating DAQ, IMAQ, and MotionIntegrating DAQ, IMAQ, and Motion
Project overview – circuit test system (CTS) Tools that simplify the integration task Balance between system monitoring and
functional circuit testing Coordination of image acquisition Portable configuration information
Project overview – circuit test system (CTS) Tools that simplify the integration task Balance between system monitoring and
functional circuit testing Coordination of image acquisition Portable configuration information
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CTSCTS
Objective – circuit manufacturing verification through automated testing
Integration of data acquisition (DAQ), signal conditioning (SCXI), image acquisition (IMAQ), and motion control
Objective – circuit manufacturing verification through automated testing
Integration of data acquisition (DAQ), signal conditioning (SCXI), image acquisition (IMAQ), and motion control
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CTSCTS
Camera
Motor
UUT
PC Based Acquisitions
System Vital Signs
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Follow Good Software Development PracticesFollow Good Software Development Practices
Top-down verses bottom-up Define tasks for modularity Determine the main data flow of the application
• Critical paths and priorities Determine dependencies between modules Standardized junctions for inter-module
communication Remember to design with the future in mind!
Top-down verses bottom-up Define tasks for modularity Determine the main data flow of the application
• Critical paths and priorities Determine dependencies between modules Standardized junctions for inter-module
communication Remember to design with the future in mind!
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Integration ToolsIntegration Tools
Multithreading Code synchronization
• Semaphores• Notifiers• Rendezvous• Queues• Occurences
VI Server
Configuration File VIs
Multithreading Code synchronization
• Semaphores• Notifiers• Rendezvous• Queues• Occurences
VI Server
Configuration File VIs
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Integration Tools (cont.)Integration Tools (cont.)
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Integration Tools (cont.)Integration Tools (cont.)
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Integration Tools (cont.)Integration Tools (cont.)
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Integration Tools (cont.)Integration Tools (cont.)
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System Monitoring and Circuit TestingSystem Monitoring and Circuit Testing
Problem – resource conflict between the system monitoring and circuit testing operations
Options• More hardware• State machine• Parallel loop with Semaphore• VI Server with Semaphore
Problem – resource conflict between the system monitoring and circuit testing operations
Options• More hardware• State machine• Parallel loop with Semaphore• VI Server with Semaphore
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VI Server with SemaphoresVI Server with Semaphores
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Coordinated Image AcquisitionCoordinated Image Acquisition
Problem – continuous image acquisition without significant delays
Options• State machine• Parallel loop• VI Server
Problem – continuous image acquisition without significant delays
Options• State machine• Parallel loop• VI Server
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VI ServerVI Server
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Portable Configuration InformationPortable Configuration Information
Problem – system-independent configuration information
Options• Hard code information• Configuration dialog• Configuration files
Problem – system-independent configuration information
Options• Hard code information• Configuration dialog• Configuration files
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Configuration FilesConfiguration Files
Example .cfg FileExample .cfg File
Reading the .cfg FileReading the .cfg File
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Configuration Files (cont.)Configuration Files (cont.)Using the .cfg DataUsing the .cfg Data
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ClosingClosing
National Instruments simplifies the integration of measurement and automation systems by providing• Superior application development environments• Comprehensive driver APIs• Advanced hardware solutions
National Instruments simplifies the integration of measurement and automation systems by providing• Superior application development environments• Comprehensive driver APIs• Advanced hardware solutions