Method and device for association of anonymous reflectors to detected angle positions
First Claim
1. A method for association of anonymous reflectors (R1-R11) to detected angle positions, wherebya) the anonymous reflectors are arranged in positions in a transport area, b) positions of the reflectors (R1-R11) are stored in memory, c) a beam (B) is emitted from a vehicle (10) over a search sector, d) reflected signals from reflecting objects are received on board the vehicle (10), e) an angle position towards reflecting objects in relation to a reference direction (D) of the vehicle (10) is detected over the search sector and corresponding angle values are determined, f) at least one angle value determined over the search sector is stored, characterized bycontinuously measuring a distance between a reflector (R1-R11) and a reference point on the vehicle (10) to obtain a distance value, determining a relation between the distance value and corresponding distance between a stored reflector positions and a position assumed for the vehicle, and allowing the association if the relation is within an expected interval.
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Accused Products
Abstract
A method for association of anonymous reflectors (R1-R11) to detected angle positions, whereby a) the anonymous reflectors are arranged in positions in a transport area; b) positions of the reflectors (R1-R11) are stored in first memory means (20); c) a beam (B) is emitted from an emission source (13) of a vehicle (10) over a search sector; d) reflected signals from reflecting objects are received on board the vehicle (10); e) an angle position towards reflecting objects in relation to a reference direction (D) of the vehicle (10) is continuously detected by detector means (18) during the sweep of the beam over the search sector, and corresponding angle values are determined; f) at least one angle value determined over the search sector is stored in a second memory means (21). The distances between reflectors (R1-R11) are a reference point on the vehicle (10) is determined continuously by a control means (19). A relation between the distance values and the corresponding distances between stored reflector positions and a position assumed for the vehicle is determined by control means (19), the association being allowed if the relation is within an expected interval.
180 Citations
17 Claims
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1. A method for association of anonymous reflectors (R1-R11) to detected angle positions, whereby
a) the anonymous reflectors are arranged in positions in a transport area, b) positions of the reflectors (R1-R11) are stored in memory, c) a beam (B) is emitted from a vehicle (10) over a search sector, d) reflected signals from reflecting objects are received on board the vehicle (10), e) an angle position towards reflecting objects in relation to a reference direction (D) of the vehicle (10) is detected over the search sector and corresponding angle values are determined, f) at least one angle value determined over the search sector is stored, characterized by continuously measuring a distance between a reflector (R1-R11) and a reference point on the vehicle (10) to obtain a distance value, determining a relation between the distance value and corresponding distance between a stored reflector positions and a position assumed for the vehicle, and allowing the association if the relation is within an expected interval.
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11. A device for association of multiple anonymous reflectors (R1-R11) present in a transport area, to detected angle positions, comprising:
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a) a vehicle (10) with a drive and steering unit (14), b) a first memory (20) for storing the positions of the reflectors (R1-R11), c) an emission source (13) for emitting a beam (B), and a controller (19) for moving the beam (B) from the vehicle (10) over a search sector, d) a detector (18) for continuous angle position detection of a reflected signal in relation to a reference direction (D) of the vehicle (10) during the sweep of the beam over the search sector, and for determination of the corresponding angle value, e) a second memory (21) for storing multiple angle values determined over the search sector, characterized in that the controller (19) is provided to continuously measure the distances between the reflectors (R1-R11) and a reference point on board vehicle (10) using the reflected signal and to store the corresponding distance values in memory (20), and that the controller (19) is provided to continuously determine a relation between the distance values and the corresponding distances between stored reflector positions and a position assumed for the vehicle, the association being allowed if the relation is within an expected interval. - View Dependent Claims (12, 13, 14, 15, 16, 17)
that the reflectors (R1-R11) are made plane, that the controller (19) is provided to continuously determine an angle factor from a relation between the determined value of the duration and a duration reference value, and that the controller (19) is provided to continuously adjust the expected intensity value with regard to the angle factor and the intensity reference value, the association being allowed if the relation between the adjusted intensity value and the determined intensity value is within an expected interval. -
17. A device according to claim 11, characterized in
that drive and steering unit (14) is provided to modulate beam (B), and that drive and steering unit (14) is provided to determine the distance between the vehicle and reflector (R1-R11) depending on the time offset between the phase position of the emitted beam (B) and the corresponding phase position of the received beam.
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Specification