chris aden, 3d product marketing · 1 © 2017 cognex measurement applications using laser profiler...

© 2017 Cognex1

MEASUREMENT APPLICATIONSUSING LASER PROFILER

Chris Aden, 3D Product Marketing

© 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

© 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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LASER PROFILER SYSTEMS

One or many displacement

sensorsController

Application software

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DISPLACEMENT SENSOR

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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

© 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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▪ 2D and 3D profilers require powerful application software

▪ Important jobs

▪ Visualization

▪ Virtual fixturing

▪ Feature extraction

▪ Measurement

▪ Logic

APPLICATION SOFTWARE

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▪ 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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FLUSH & GAP MEASUREMENTS

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GLUE BEAD INSPECTION

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WINDING INSPECTION

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▪ 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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▪ 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

chris aden, 3d product marketing · 1 © 2017 cognex measurement applications using laser profiler...

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