Bot position sensing
First Claim
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1. A storage and retrieval system comprising:
- a storage structure having storage shelves, each storage shelf having slats for supporting stored items where the slats are spaced apart from each other by a predetermined distance;
an autonomous transport vehicle including at least one sensor configured to sense each of the slats and output a signal indicating when a slat is sensed; and
a controller for verifying a location of the autonomous transport vehicle within the storage structure based on at least the output signal and configured to compare a location of the autonomous transport vehicle at a time the slat is sensed with a predetermined location of the slat and updating a verified location of the autonomous transport vehicle if the locations substantially coincide.
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Abstract
A storage and retrieval system including a storage structure having storage shelves, each storage shelf having slats for supporting stored items where the slats are spaced apart from each other by a predetermined distance, an autonomous transport vehicle including at least one sensor configured to sense each of the slats and output a signal indicating when a slat is sensed, and a controller for verifying a location of the autonomous transport vehicle within the storage structure based on at least the output signal.
210 Citations
8 Claims
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1. A storage and retrieval system comprising:
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a storage structure having storage shelves, each storage shelf having slats for supporting stored items where the slats are spaced apart from each other by a predetermined distance; an autonomous transport vehicle including at least one sensor configured to sense each of the slats and output a signal indicating when a slat is sensed; and a controller for verifying a location of the autonomous transport vehicle within the storage structure based on at least the output signal and configured to compare a location of the autonomous transport vehicle at a time the slat is sensed with a predetermined location of the slat and updating a verified location of the autonomous transport vehicle if the locations substantially coincide. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A storage and retrieval system comprising:
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at least one multilevel vertical conveyor having at least one shelf having support fingers; at least one wall adjacent the multilevel vertical conveyor, the wall including protrusions substantially aligned with the support fingers; an autonomous transport vehicle including at least one sensor configured to sense each of the protrusions and output a signal indicating when a protrusion is sensed and wherein the autonomous transport vehicle includes a transfer arm having transfer arm fingers, the autonomous transport vehicle is configured to align the transfer arm fingers with spaces located between the support fingers of the at least one shelf based on the determined location of the autonomous transport vehicle for extending the transfer arm fingers into a path of the shelf without substantial contact with the supporting fingers; and a controller configured to determine a location of the autonomous transport vehicle relative to the support fingers based on the output signal from the at least one sensor. - View Dependent Claims (8)
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Specification