SCANNING & OPTIMISATION
efficient alternative than a complete multi point system or a camera system. Board Profiler MP (MultiPoint) is a new
product developed by Limab Sweden to measure the profiles of boards in transversal conveyors. The system measures boards with high accuracy in all production speeds unaffected by vibrations on the conveyor. The MultiPoint sensor is used deliver a complete scan profiles every 6th millimetre of the board. The Board Profiler can handle production speeds of 200 boards/minute without problems.
The system includes a Windows based PC with software that supplies you with all measurement values you need, including complete wane information, optimisation of cutting for trimmers, reject/turning before edgers, and more. The system shows complete graphs of the structure and crosscut profile of every board. All measurement results are logged into the hard disc and can be retrieved for evaluation purposes. Remote connections for services and
software upgrades are available so Limab can help customers at a distance.
LMI believes its family of chroma+scan sensors is the “ultimate in 3D scanning technology for log and board optimisation”. These leading edge sensors produce highly accurate and reliable data to ensure maximum volume and value recovery from high-production machine centres, typical of the modern sawmill. The chroma+scan product family was designed as an upgrade to the DynaVision product line and has been used in the field for over five years. There are five product families, each with multiple models, features, and functionality tied to specific operations in saw and planer mills.
By combining high density laser profiles with sub millimetre pixel resolution, the chroma+scan 3350 provides a mill’s optimiser with an unrivalled quality of data to improve the value recovery of each board processed. “With the 3350 sawmillers are no longer just relying on geometric information to make the edging or trimming decision,” LMI stated. “True colour vision data allows the optimiser to detect various surface imperfections (such as knots, rot, stain, pitch pocket) and factor these defects into the cutting decision. Having more information on each board allows for better decisions to be made, which results in a value increase at the edger or trimmer.” The chroma+scan 3350 features:
• True coplanar scanning: sensors mounted top/bottom in the same vertical plane that deliver true differential thickness without being affected by board bounce
• High density scanning: achieve better cutting decisions by collecting large amounts of 3D
AUGUST/SEPTEMBER 2011 | International Forest Industries 27
profile and 2D sub-millimetre colour vision data to generate a more complete board model
• Fast scan rates: providing data at a rate of 2 kHz, the chroma+scan 3350 outputs highly accurate and reliable data suitable for today's fastest machine centres.
• Scalable platform: LMI solutions can integrate multiple synchronised sensors in order to easily deliver data via a Gigabit Ethernet network. “With a diverse range of feature-rich models designed to maximise mill profitability through board and log optimisation, it’s hard to argue that the chroma+scan family of sensors is anything less than the standard for scanning technology in the wood processing industry,” the supplier said. IFI
Having more information on each board allows for better decisions to be made, which results in a value increase at the edger or trimmer – LMI
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