G - Physics
05
D
341/78, 341/84
G05D 1/00 (2006.01) G05D 1/02 (2006.01)
Patent
CA 1275721
ABSTRACT A navigation system for detecting the position and controlling the movement of an automatically guided vehicle (1) comprises at least one light source (4) and at least one detector (5) responsive to the light emitted from the light source (4), the vehicle (1) be accompanied by either the light source (4) or the detector (5). A signal processing unit (10) has memory means (13) in which path control information (12) corresponding to the path (3) of the vehicle is stored, and comparator means (11) adapted to compare the path control information (12) stored in the memory means (13) with positional information produced by the system, in order, when the path control information and the positional information differ, to emit control signals (15) for the movement of the vehicle. The detector (5) is a position-sensitive semiconductor detector having a substantially planar, extended, continuous sensing area (7) and is adapted to receive light within a restricted part (P) of the sensing area of the de- tector. In response to the detected light, electric signals are produced from which said positional infor- mation (9) corresponding to the actual position of the vehicle (1) in at least one direction is derived.
516486
Bt Carrago Aktiebolag
Bt Carrier Systems Ab
Gowling Lafleur Henderson Llp
Lundstrom Mats
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