Positioning and navigation system based on visible light communication

Abstract

The invention belongs to the field of light communication and particularly relates to a positioning and navigation system based on visible light communication. A visible light receiving and emitting array comprises a plurality of LED lamps arranged in a space and a plurality of first visible light receiving devices, the first visible light receiving devices are connected with a navigation server in a communication mode, visible light emitted by each LED lamp carries coded information, and visible light carrying service information is emitted by the navigation server through the LED lamps; the positioning and navigation module comprises a navigation device, a second visible light receiving device and a visible light emitting device, visible light carrying information and emitted by the LED lamps is received by the second visible light receiving device, light intensity of the received visible light is detected by the second visible light receiving device, the visible light carrying the information is emitted by the positioning and navigation module through the visible light emitting device, and after receiving the visible light, the first visible light receiving device sends the obtained information to the navigation server. According to the system, positioning, navigation and communication are achieved by the visible light, the accuracy is high, and when the system is in use, the system is healthy.

Description

technical field [0001] The invention belongs to the field of optical communication, in particular to a positioning and navigation system based on visible light communication. Background technique [0002] The Global Positioning System (GPS, Global Positioning System) is a very widely used positioning and navigation technology. It measures the time difference of arrival of multiple satellite signals through the GPS receiver to estimate the position, and provides global positioning coverage and navigation services. However, in some places, especially indoors, GPS cannot receive accurate positioning due to lack of satellite signals or poor signal quality. [0003] The current indoor positioning system is mainly based on infrared technology, ultrasonic technology, wireless local area network technology, Bluetooth technology and so on. The use of these technologies often determines the relative position between the moving target and the fixed unit through the communication betwe...

AI Technical Summary

Problems solved by technology

Infrared technology and ultrasonic technology are very effective in places with simple indoor structure and limited indoor area. However, in reality, the indoor structure is often very complex and easily subject to human interference, so these two methods are not practical.

However, in areas where wireless communication is prohibited or restricted, such as in mines, gas stations, and aircraft cabins, wireless local area network technology or Bluetooth technology cannot be used for positioning

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