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Wavelength encoding indoor positioning system and method based on infrared light dispersion

An indoor positioning and infrared light technology, applied in the indoor field, can solve the problems of limited positioning distance, inability to achieve positioning, and expensive equipment, and achieve the effects of fast update speed, strong real-time positioning and high cost performance.

Active Publication Date: 2018-09-28
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used indoor positioning technologies mainly include Wi-Fi positioning, Bluetooth positioning, ultrasonic positioning and computer vision positioning. Among them, Wi-Fi positioning is widely used in many fields because Wi-Fi already exists in many public places and has low cost. , but Wi-Fi positioning is easily interfered by other electromagnetic waves, which will reduce its accuracy; the accuracy of Bluetooth positioning method is high, but the cost of related equipment is expensive, and the positioning distance is greatly limited, which makes it impossible to realize large space positioning. Positioning; Ultrasonic positioning will also be affected by surrounding obstacles and multipath effects, thereby reducing its accuracy; Computer vision positioning requires the camera to find the right angle when shooting the target object for precise positioning, and it should continue to improve

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  • Wavelength encoding indoor positioning system and method based on infrared light dispersion
  • Wavelength encoding indoor positioning system and method based on infrared light dispersion
  • Wavelength encoding indoor positioning system and method based on infrared light dispersion

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Embodiment 1

[0032] Embodiment 1: as Figure 1 ~ Figure 3 As shown, a wavelength-coded indoor positioning system based on infrared light dispersion includes a locator 100, a photodetector 200 and a processor 300; the locator 100 includes an infrared light source and a dispersion prism, and the infrared light source is an infrared broadband light source , the infrared light source includes a first infrared light source 101 and a second infrared light source 103, the first infrared light source 101 is arranged vertically, the second infrared light source 103 is arranged horizontally, one end of the first infrared light source 101 is connected to the second infrared light source One end of the light source 103 intersects at an upper vertex of the space, and the upper vertex is defined as the origin; one side of the first infrared light source 101 is provided with a first dispersive prism 102 in parallel, and the bottom of the second infrared light source 103 A second prism 104 for dispersion ...

Embodiment 2

[0034] Embodiment 2: An indoor positioning method for wavelength coding based on infrared light dispersion based on a wavelength coding indoor positioning system based on infrared light dispersion, comprising the following steps:

[0035] Step 1: the first infrared light source 101 emits infrared light in the vertical direction; the second infrared light source 103 emits infrared light in the horizontal direction;

[0036] Step 2: The infrared light in the vertical direction fills the space after being dispersed by the first prism 102; the infrared light in the horizontal direction fills the space after being dispersed by the second prism 104;

[0037] Step 3: The photodetector 200 detects the infrared light signal passing through itself, and converts the wavelength information of the infrared light signal into an electrical signal and sends it to the computer through the wireless transmission module 201;

[0038] Step 4: The computer encodes the wavelength of the electrical s...

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Abstract

The invention discloses a wavelength encoding indoor positioning system based on infrared light dispersion. The system is composed of a position indicator, a photodetector and a processor. The position indicator consists of an infrared light source and dispersion prisms. The photodetector includes a wireless transmission module. The processor includes a computer. In addition, the invention also provides a wavelength encoding indoor positioning method based on infrared light dispersion. The method comprises: a first infrared light source emits infrared light in a vertical direction; a second infrared light source emits infrared light in a horizontal direction; the infrared light in the vertical direction and the horizontal direction pass through the first dispersion prism and the second dispersion prism to carry out dispersion and then the dispersed light spreads in space; the photodetector detects an infrared light signal, transforms wavelength information of the infrared light signalinto an electrical signal, and then sends the electrical signal to the computer; and the computer carries out wavelength encoding on the electrical signal carrying the wavelength information of the infrared light to obtain location information of a located object. Therefore, the accurate positioning of an indoor object is realized.

Description

technical field [0001] The invention relates to the field of indoor technology, in particular to an infrared light dispersion-based wavelength coding indoor positioning system and method. Background technique [0002] At present, with the improvement of technology level, positioning system has become an indispensable part of people's life no matter work or travel. The early positioning system was used in the military. With the improvement of the quality of life, the Global Positioning System (Global Positioning System, referred to as GPS) began to appear in people's lives and spread to various fields of society, such as car navigation systems, road engineering, Traffic management and smartphone positioning functions, etc. It can be seen that "positioning" has entered thousands of households. Today's GPS navigation system can not only plan routes in advance, but also feedback real-time road conditions, which greatly facilitates people's travel. However, GPS is mainly suitab...

Claims

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Application Information

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IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 张锦龙贺静尤贺禹文豪许璐瑶
Owner HENAN UNIVERSITY