INDOOR POSITIONING DEVICE AND INDOOR POSITIONING METHOD

摘要

Disclosed is an indoor positioning device which comprises a base, a light source mounted on the base, a rotating part, a rotating outer shell and a controller; the rotating outer shell is a hemispherical shell body or a shell body being tangent externally with a hemispherical surface; a luminous point is located at a spherical center of the rotating outer shell; the rotating outer shell is divided into a plurality of encoded rings, each encoded ring is divided into a plurality of encoding bits, a angle β of each encoding bit in a latitudinal direction is 360/N degrees, different encoded rings has different arrangements of encoding bits; in each encoded ring, some encoding bits are in a transparent state, there is no arrangement of two continuous opaque encoding bits, some encoding bits arranged in a specified style constitute a start bit or an end bit; once a light barrier of the rotating part passes through an optical coupler, the light source generates a frequency hopping; a receiver senses an optical signal and performs positioning. According to the special rotating outer shell and the frequency hopping light source, and in combination with the receiver, the optical signal can be sensed and positioning can be implemented. The indoor positioning device has a simplified structure and the method for indoor positioning is novel, accurate, has a good stability and a low cost, and is applicable to indoor positioning with high precision.

主权项

1. An indoor positioning device, comprising a base, a light source mounted on the base, a rotating part, a rotating outer shell arranged on the rotating part, and a controller;
the rotating outer shell is a hemispherical shell body or a shell body formed by splicing a plurality of small flat surfaces or annular surfaces together and being tangent externally with a hemispherical surface; a luminous point of the light source is positioned at a spherical center of the hemispherical surface; the rotating outer shell is divided into a plurality of encoded rings that are parallel to latitude lines, in a longitudinal direction, an angle α of each encoded ring relative to the light source is known; each encoded ring relative to the light source is divided into a plurality of encoding bits, in a latitudinal direction, an angle β of each of the encoding bits relative to a center point of the encoded ring is 360/N degree, wherein N is the number of the encoding bits in one encoded ring, and different encoded rings have different arrangements of encoding bits respectively; in each encoded ring, some encoding bits are in a transparent state, and there is no arrangement of two or more continuous opaque encoding bits, some encoding bits arranged in a specified style constitutes a start bit or an end bit of the encoded ring; the base is further provided with an opto-isolator having a groove, a side of the rotating part facing the base is provided with a light barrier, once the rotating part drives the light barrier to pass through the groove, the controller controls the light source to generate a frequency hopping; the indoor positioning device further comprises a receiver configured to be placed at a point to be positioned to sense optical signal, detecting a frequency hopping point, and performing positioning according to the optical signal and the frequency hopping point.