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R-TRAC Rotation Tracking is a fully autonomous system that is independent of the log optimizer geometric model. Works with all types of log turners no matter which optimizer brand is installed. No mechanical modifications are required to the log turner or to the infeed chain. Very easy integration with any control system (PLC), as R-TRAC allows the use of a closed loop feedback to control the position of the log turner cylinders based on the rotation instead of their linear movement. R-TRAC system maintains a continuous reading of the rotation angle while the log is in the field of view as opposed to applying a rotation correction after the rotation is complete.
Working principle is quite simple: a set of data is acquired for every inch the log advances, each set of data contains images of the log’s surface and geometric data, a rotation measurement is calculated for each pair of consecutive sets of data which gives a rotation value per inch of traveling. The cumulative log rotation measurement is sent to the control system (PLC) and the PLC will use these measurements to control the log turner positions using a PID loop to turn the log perfectly each time.
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