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  1. 2D vision sensors
  2. Applications
Typical contour applications
Pattern recognition Object position
Shape recognition Number of objects
Rotational position Sorting tasks
Typical BLOB and pixel counting applications
Object area Object contrast
Object width / height Rotational position
Inside / outside radius Object position
Roundness / rectangularity Number of objects
Number of holes Sorting tasks

Application examples

Punch Quality (Contour)
 
Hardware Application details
O2D524 / O2D534 
  • Internal infrared LEDs
  • No external lighting
 Determine if a hydraulic or pneumatic punch is complete and in the correct position to improve product quality
  • Find the contour of the punch using an anchor and compare it to the reference good part
  • O2D254/O2D534 (telephoto lens) provides 0.07 mm/pixel tolerance at 500 mm distance
  • O2D522/O2D532 (wide angle lens) provides 0.24 mm/pixel tolerance at 500 mm distance

 

Clip detection and positioning (Contour)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LEDs
  • No external lighting
 Determine if all clips are present simultaneously to reduce cycle time
  • Typical clip size is 25 x 25 mm (1" x 1")
  • At 3 m distance, wide angle camera covers area of 1800 x 1350 mm (6' x 4-1/2')
  • 1.4 mm/pixel resolution provides ability to inspect clips on an entire door
Presence of screw thread (BLOB / pixel counter)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LEDs
  • No external lighting
 Detect if a tapped hole is threaded completely to prevent crashes in an automated assembly line
  • Infrared light illuminates threads and displays gray area when threads are not present
  • Use the gray-scale histogram to find the upper and lower threshold to properly detect threads
  • Allows ability to sort out untapped holes
Dispense quality measurement (BLOB / pixel counter)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LEDs
  • No external lighting
 Measure dispense beads for presence and quality checks ensures a strong bond between two or more parts
  • Use a continuous trigger (35 fps) and mount camera next to dispense head for real-time measurement
  • BLOB analysis measures irregularly shaped beads reliably
  • At 100 mm distance, standard lens camera provides 0.07 mm/pixel resolution
Short shot detection (BLOB / pixel counter)
 
Hardware Application details
O2D522 / O2D532
  • Internal infrared LEDs
  • No external lighting
 In the injection molding process, detect that good parts are made and that the mold is clear for the next cycle
  • Pixel counter provides more flexibility than contour since small changes in size can still be acceptable
  • Use the mold furthest from the injection nozzle and set the ROI there as the most likely area for short shots to develop
  • Use wide angle camera from 1 m away to analyze a 300 x 250 mm area with 0.47 mm/pixel resolution
Wood stringer detection on pallets (Contour)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LEDs
  • No external lighting
 Stringers running perpendicular to wood stacked on pallets in lumber mills provide the means to depalletize the stack easily with large vacuum cups on a robotic arm
  • The wide angle camera mounted 2 m above the pallet has a field of view of approximately 1 m x 1 m and a resolution of 1 mm/pixel
  • Reducing the switching threshold provides flexibility in the orientation of the boards while still providing an accceptable result
Sealed cap detection (Contour)
 
Hardware Application details
O2D520 / O2D530
  • Use with backlight external lighting
  • No internal LEDs
 Bottling requires fast and accurate capping stations that are checked to prevent a health hazard
  • Use of a backlight provides an easy- to-detect silouhette of a correctly sealed cap
  • At 35 fps, the contour algorithm quickly checks that the cap is sealed
Wire color detection (BLOB / pixel counter)
 
Hardware Application details
O2D500 / O2D510
  • Internal RGB-W (red, green, blue, white) LEDs
  • Test and choose the best light source for your application
 Wire harnesses frequently use different color wires for ease of use. Vision systems assist in inspecting the harnesses for completeness, but detection of wire color requires different light wavelengths for illumination.
  • Wire colors have different gray-scale values 
  • The pixel counting algorithm detects the wires based on set threshold of gray-scale
Gear sortation (Contour)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LED
  • No external lighting
 Detect the correct gear design
  • Automated error-proofing inspection assures customers they reliably receive the correct parts
  • Standard lens camera mounted 300 mm away provides 0.07 mm/pixel resolution for the contour algorithm to find the edges of the gear teeth
O-ring assembly (Contour or pixel counting)
 
Hardware Application details
O2D520 / O2D530
  • Internal infrared LED
  • No external lighting
 Detect that all o-rings are present and in the proper position
  • Contour algorithm can find the edges of each o-ring to evaluate whether they match the reference image
  • With a large contrast between the o-ring and other parts in the ROI, pixel counting algorithm is also an option