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Indoor navigation system and method based on polarized light

A technology for indoor navigation and polarized light, which is applied in the field of navigation and can solve problems such as technical application gaps

Inactive Publication Date: 2014-09-10
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above studies are all based on the polarized light distribution and orientation information in the sky, and use it as an information source for outdoor navigation. The research technology and bionic polarization navigation sensors are used for outdoor navigation. The application of bionic polarization technology in indoor navigation is still basically limited. blank

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  • Indoor navigation system and method based on polarized light
  • Indoor navigation system and method based on polarized light
  • Indoor navigation system and method based on polarized light

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Embodiment 1

[0065] Polarized light distribution and orientation information are sources of information for navigation. The navigation technology using polarized light and the bionic polarization navigation sensor are mostly used for outdoor navigation. However, there are few studies on the application of bionic polarization technology in indoor navigation. With the urgent demand for the development of indoor positioning technology, the importance of indoor positioning technology is becoming more and more prominent. Therefore, it is of great theoretical value and research significance to design a relatively cheap, easy to develop, reasonable accuracy and small error indoor navigation method. . In this context, this embodiment provides an indoor navigation system based on polarized light, and introduces a method for implementing indoor navigation by using the indoor navigation system.

[0066] The indoor navigation system based on polarized light described in this embodiment includes a pos...

Embodiment 2

[0101] On the basis of Embodiment 1, this embodiment further optimizes the components constituting the polarized light-based indoor navigation system. For the components of the indoor navigation system not mentioned in this embodiment, refer to Embodiment 1.

[0102] The positioning light source includes a laser polarized light source and a polarizer, wherein the laser polarized light source contains a semiconductor laser. The semiconductor laser can be a semiconductor laser whose model is M633D5-3-12-35. The M633D5-3-12-35 semiconductor laser includes a red dot laser module, a high-performance APC drive circuit and an optically coated glass lens group. The desired wavelength is 633nm red elliptically polarized light. The polarizer uses OPSP25.4 polarizer. The polarizer is made by coating a dichroic material on a transparent sheet, has a small damage threshold, and has a wavelength range of 400nm-700nm, and is used to convert elliptically polarized light into laser linearly...

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Abstract

The invention discloses an indoor navigation system and method based on polarized light and belongs to the technical field of navigation. The indoor navigation system comprises a positioning light source, a positioning terminal and an upper computer. The navigation method comprises the following steps: the positioning light source is used for obtaining and transmitting laser line polarized light in a single vibration direction and the polarized light is received and processed by the positioning terminal; the positioning terminal is used for receiving the laser line polarized light transmitted by the positioning light source, and carrying out filtering, polarization detection, photovoltaic conversion and logarithm rate amplification operation on the laser line polarized light to form an analogue voltage signal; the analogue voltage signal is subjected to A / D (Analogue / Digital) conversion to form a digitalized voltage signal; the digitalized voltage signal is transmitted to the upper computer; the upper computer is used for receiving the digitalized voltage signal output by the positioning terminal and obtaining and displaying the information about direction or moving angle of an indoor carrier needing to be positioned according to a polarization angle measurement algorithm. The indoor navigation system disclosed by the invention is reasonable in design, high in navigation precision and small in errors; the cost is reduced and the indoor polarized light navigation can be realized.

Description

technical field [0001] The invention belongs to the technical field of navigation, and relates to an indoor navigation system and method, in particular to an indoor navigation system based on polarized light and a polarized light navigation method for indoors. Background technique [0002] The navigation method based on polarized light is a bionic polarization navigation method that uses the distribution and orientation information of polarized light to obtain the required heading angle and other information. In 1808, French physicist Etienne Louis Malus first discovered the phenomenon of polarization of light. In 1949, German zoologist Von Frisch discovered that bees can navigate using ultraviolet polarized light. In the 1960s, Professor Rüdiger Wehner and his team discovered after a long-term observation study of a desert ant that it could perceive polarized light in the sky and use it for navigation. On this basis, Professor Rüdiger Wehner successively proposed the pola...

Claims

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Application Information

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IPC IPC(8): G01C21/00G01J4/00
CPCG01C21/206G01J4/04
Inventor 张华许录平王斌卢晓申洋赫宋诗斌韩承玺闫博
Owner XIDIAN UNIV
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