Positioning method and positioning system based on light intensity
First Claim
1. A positioning method based on light intensity, comprising:
- sequentially adjusting luminance of three point light sources of a lighting system located on a first surface to obtain changes of luminance for each of the three point light sources and detecting, by a target located on the first surface, changes of light intensities from the three point light sources in response to the changes of luminance;
calculating a distance between each of the three point light sources and the target based on the changes of luminance and the changes of light intensities;
setting up spherical equations using a position of each of the three point light sources as a center and using the distance between each of the three point light sources and the target as a radius; and
calculating a position of the target by solving the spherical equations.
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Abstract
A positioning method and a positioning system based on light intensity are provided. The positioning system comprises a lighting system, a sense feedback device and a positioning module. The lighting system comprises at least three point light sources and sequentially adjusts luminance of these point light sources to light up a target. The sense feedback device is disposed on the target and used to collect light intensity information of the light projected on the target by the lighting system. The positioning module calculates a distance between the target and each of the point light sources based on the light intensity information and calculates a positioning location of the target based on the locations of the point light sources and the distances between the target and the point light sources.
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Citations
34 Claims
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1. A positioning method based on light intensity, comprising:
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sequentially adjusting luminance of three point light sources of a lighting system located on a first surface to obtain changes of luminance for each of the three point light sources and detecting, by a target located on the first surface, changes of light intensities from the three point light sources in response to the changes of luminance; calculating a distance between each of the three point light sources and the target based on the changes of luminance and the changes of light intensities; setting up spherical equations using a position of each of the three point light sources as a center and using the distance between each of the three point light sources and the target as a radius; and calculating a position of the target by solving the spherical equations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A positioning system based on light intensity, comprising:
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a lighting system, comprising three point light sources, the lighting system sequentially adjusting luminance of the three point light sources of the lighting system located on a first surface to obtain changes of luminance for each of the three point light sources; a sense feedback device detecting, by a target located on the first surface, changes of light intensities from the three point light sources in response to the changes of luminance; and a positioning module calculating a distance between each of the three point light sources and the target based on the changes of luminance and the changes of light intensities, setting up spherical equations using a position of each of the three point light sources as a center and using the distance between each of the three point light sources and the target as a radius, and calculating a position of the target by solving the spherical equations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification