| 摘要 |
A system for measuring timber carried in a direction of travel by a conveyance medium includes a sensor for sensing when a first end of the timber reaches a reference point along the conveyance medium. An optical distance measuring device is aligned with the conveyance medium in the direction of travel. The measuring device measures a distance between the measuring device and a second end of the timber. A processing device is in communication with the sensor and the measuring device. The processing device calculates a length of the timber between the first end and the second end based upon outputs of the sensor and the measuring device.
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