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© 2017 Cognex1
MEASUREMENT APPLICATIONSUSING LASER PROFILER
Chris Aden, 3D Product Marketing
![Page 2: Chris Aden, 3D Product Marketing · 1 © 2017 Cognex MEASUREMENT APPLICATIONS USING LASER PROFILER Chris Aden, 3D Product Marketing](https://reader033.vdocuments.us/reader033/viewer/2022053017/5f1c28611e022324d529fc5c/html5/thumbnails/2.jpg)
© 2017 Cognex2
LASER PROFILER OVERVIEW & INSIGHTS
During this webinar, our expert presenter
will discuss:
• Laser profiler system basics
• 2D and 3D applications
• 2D demo using Cognex In-Sight Laser
Profiler
• 3D demo using Cognex Vision Pro Featured Speaker
Chris Aden
Cognex Product Marketing
![Page 3: Chris Aden, 3D Product Marketing · 1 © 2017 Cognex MEASUREMENT APPLICATIONS USING LASER PROFILER Chris Aden, 3D Product Marketing](https://reader033.vdocuments.us/reader033/viewer/2022053017/5f1c28611e022324d529fc5c/html5/thumbnails/3.jpg)
© 2017 Cognex3
▪ Laser profilers provide accurate x,y,z measurements out of the box – without sophisticated calibration
▪ Laser profilers work on difficult low contrast applications and are agnostic to color and lighting variation
▪ 2D laser profilers can quickly solve many problems that require only x and z information
▪ 3D laser profilers provide a flexible solution for surface inspection, OCR, and inspection or guidance applications that require alignment.
OVERVIEW
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© 2017 Cognex4
LASER PROFILER SYSTEMS
One or many displacement
sensorsController
Application software
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© 2017 Cognex5
DISPLACEMENT SENSOR
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© 2017 Cognex6
3D IMAGES AND 2D PROFILES
y direction
x directionz direction
z direction
x direction
• An acquisition occurs at a trigger event
• Each acquisition generates a 2D profile in x and z
Stitching multiple 2D profiles generates a 3D image
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© 2017 Cognex7
▪ Controller Jobs:
▪ Image processing (mapping the raw image on CMOS chip to a calibrated profile or 3D image)
▪ Real time execution of vision tools and measurements
▪ Communication with the outside world
▪ Communication with the outside world
▪ External triggers
▪ Network communications
▪ Digital/Analog I/O
CONTROLLER
TCP/IP
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© 2017 Cognex8
▪ 2D and 3D profilers require powerful application software
▪ Important jobs
▪ Visualization
▪ Virtual fixturing
▪ Feature extraction
▪ Measurement
▪ Logic
APPLICATION SOFTWARE
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© 2017 Cognex9
▪ Many factory automation applications are based on 2D profile measurements
▪ Measurements include:
▪ Height
▪ Gap width
▪ Area
▪ Angle
▪ Presence/absence
2D PROFILE APPLICATIONS
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© 2017 Cognex10
FLUSH & GAP MEASUREMENTS
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© 2017 Cognex11
GLUE BEAD INSPECTION
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© 2017 Cognex12
WINDING INSPECTION
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© 2017 Cognex13
▪ Other inspection and guidance applications require full 3D images
▪ Inspection:
▪ Surface defects
▪ 3D location and alignment
▪ Optical character recognition
▪ Volume measurement
▪ Guidance:
▪ Robot picking
3D APPLICATIONS
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© 2017 Cognex14
3D ALIGNMENT FOR INSPECTION & GUIDANCE
Training Cube Align Result Tilted Align Result
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© 2017 Cognex15
TIRE INSPECTION
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© 2017 Cognex16
DEMONSTRATION
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© 2017 Cognex17
2D DEMONSTRATION
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© 2017 Cognex18
3D DEMONSTRATION
Compute the volume of the cylindrical feature. (Exact Ans = 1885 mm3)
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© 2017 Cognex19
▪ Laser profilers can be used to generate accurate 2D and 3D images for inspection applications
▪ 2D profiles are best for height, gap, area, and other x,zinspections don’t require full 3D images
▪ 3D inspection is best for volume measurement, surface inspection, OCR, and alignment applications
WRAP-UP
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© 2017 Cognex20
THANK YOU!
CONTACT COGNEX SALES844-GETCOGNEX (844-438-2469)