real time ultrasound camera for industrial applications bob lasser imperium, inc. beltsville, md
TRANSCRIPT
Real Time Ultrasound Camera for Industrial Applications
Bob LasserImperium, Inc.Beltsville, MD
Imperium
Formed in 1996 Focused solely on ultrasound camera
technology In development for 10 years, now
selling commercially Implement for different embodiments
of ultrasound camera
Sampling of Customers
Lack of trained NDT personnelLack of trained NDT personnel Prevalence towards portable devicesPrevalence towards portable devices Strong interest in imagingStrong interest in imaging Time and cost pressures Time and cost pressures
Industry Needs for New NDT Device
A-scan, B-scan, C-scan
A-scan to B-scan
Defect
B-scan versus C-scan
Defect
Defect
Ultrasound Camera
Developed to make ultrasonic testing simple High resolution Real time C-scan Large areas can be covered quickly Video presentation Free of artifacts, distortion Most imaging between 500 KHz and 10 MHz Same applications as conventional UT, only
higher resolution
Imperium’s Patented ArchitectureApplies optical imaging techniques to ultrasound
Optical Sensor (CCD) Lens
Ultrasonic Sensor (2) F1 Acoustic LensAcoustic Flashlight
Flash
Note: CCD means Charged Coupled Device
Optical Architecture:
Ultrasonic Architecture:
C-scan: Pitch Catch
Source Lens set
Array
Target
Sound Sound TransmitterTransmitter
ArrayArray
VideoVideo
LensLens
TargetTarget
Subsurface Subsurface faultfault
Pulse Echo – 50/50 Beamsplitter
Pulse echo image of quarter
Acoustic Acoustic beamsplitterbeamsplitter
WaterWater
Imaging Array
Piezoelectric Layer
Pre-amp/ detection
Signal Conditioning
Multiplexing
Pin Grid ArrayPackage
Ultrasound (piezoelectric)
material Read out
integrated circuit(ROIC)
Wire bonds
14,400 pixels
Handheld C-scan Camera
Graphical User Interface
Acoustocam i600 Camera
Introduced in 2010 1.5 lbs. versus 4 lbs. (i500) 80% less parts Robust design LCD removed Easily changed transducers
Internal Inserts – 5 MHz
One inch
C-scan Imagery: Front of Quarter
Single camera with array: 120 x 120 Distance to target: 4” Field of view: 1” Frequency: 7 MHz Wavelength: 0.20 mm Resolution: 1”/120 pixels = 0.008” or 0.21 mm
Grid Lines/Sizing
Time Corrected Gain
TCG off TCG on Threshold Crossed
Range Gating for Depth: Pick the C-scan plane of interest
Petrochemical Implementation
Petrochemical Applications
Corrosion mapping Pipes, storage tanks
Crack detection
Need simple, inexpensive easy to use device
Minimal training Portable Wireless monitoring
Scanning & Stitching
Make large mosaic images from smaller ones Capture both C-scan and thickness Uses encoder attached to side of camera
Stitching Algorithm
12
12
Individual Images
Stitched Image
Variable Weighting In Overlapped Area
Stitching Algorithm
1 2
70% Image 230% Image 1
70% Image 130% Image 2
50% Image 250% Image 1
Steel Imaging
Ultrasound video: 3.5 MHz, 1” field of view
Optical image
Mosaic Imaging : Creating Large Images From Smaller Ones
Corrosion Mapping
C-scan Optical
Lack of trained NDI personnelLack of trained NDI personnel Better quality control of NDI activitiesBetter quality control of NDI activities Use by non-certified personnelUse by non-certified personnel SIMPLE, SIMPLE, SIMPLESIMPLE, SIMPLE, SIMPLE Remotely monitored in real timeRemotely monitored in real time WirelessWireless Boeing approval spring 2011Boeing approval spring 2011
Boeing Remote NDI Program
Remote Wireless NDI Program
C-scan, A-scan, Audio, Video of inspection
Audio, Control of camera
Remote NDI Demonstration
Global Inspection Product Development Award