Position detection system
AssigneeToshiba Tec Kabushiki Kaisha
InventorsMasahito Sano, Tsuyoshi Takanose, Akiko Numata
Life of this patent
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Abstract
A plurality of optical beacons that emit light in respective light emitting patterns containing an ID code are distributed and installed in a space in which of a mobile body are moved. The mobile body is provided with a detection unit. The detection unit identifies at least three optical beacons according to the ID codes of the lights emitted according to the optical beacons and detects the direction of light emitted according to each of the identified optical beacons. Then, it detects the position of the mobile body according to the outcome of detection.
Claims14
A position detection system comprising:
- a plurality of light emitting sections distributed in the space in which of one or more mobile bodies are moved and adapted to emit light sequentially in respective light emission patterns containing respective specific pieces of identification information;
- and
- one or more detection sections arranged in the mobile body or respectively in the mobile bodies, which identify at least three of the light emitting sections according to the identification information contained in the light emitted from each of the light emitting sections, detect the direction of light emitted from each of the identified light emitting sections, and detect the position of the mobile body or respectively the mobile bodies according to the direction of light emitted;
- wherein at least one of the light emitting sections emits light upon receiving light from any other light emitting section.
A position detection system comprising:
- a plurality of light emitting sections distributed in the space in which of one or more mobile bodies are moved, and adapted to emit light sequentially in respective light emission patterns containing respective specific pieces of identification information;
- a light receiving section arranged in the one or more mobile bodies and adapted to receive light emitted from each of the light emitting sections;
- a detection section arranged in the one or more mobile bodies and adapted to identify at least three light emitting sections according to the pieces of identification information contained in the respective lights received by the light receiving section and detect the direction of light emitted from each of the identified light emitting sections;
- a radio transmission section arranged in the one or more mobile bodies and adapted to wirelessly transmit the outcome of identification and the outcome of detection of the detection section;
- a radio reception section arranged in a management center and adapted to receive the outcome of identification and the outcome of detection transmitted from the radio transmission section;
- an accumulation memory arranged in the management center and adapted to accumulatively store the positions of the one or more mobile bodies;
- and
- a server arranged in the management center and adapted to arithmetically determining the positions of the one or more mobile bodies according to the outcome of identification and the outcome of detection as received at the radio reception section and accumulatively store the outcome of the arithmetic operations in the accumulation memory.
Dependencies are inferred from the claim text.