In-tunnel vehicle positioning system based on visible light communication and UWB
A technology of visible light communication and vehicle positioning, which is applied in the field of vehicle positioning systems in tunnels, and can solve the problems of reduced driving safety factor and poor visibility
Active Publication Date: 2021-05-18
南京嘉视信电子有限公司
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Problems solved by technology
If the weather with poor lighting conditions, such as rain, snow, fog and other weather, the visibility in the tunnel will be worse than usual, and the safety factor of driving will decrease under the condition of breaking away from GPS positioning assistance.
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Embodiment
[0029] This embodiment proposes a vehicle positioning system in a tunnel based on visible light communication and UWB, and its overall structure is as follows figure 1 As shown, it includes vehicle unit, UWB positioning base station, LED tunnel light unit, server and monitoring platform; among them,
[0030] The vehicle unit is equipped with a UWB tag and a visible light signal receiving device. The UWB tag is used to continuously send UWB positioning pulses, and the visible light signal receiving device is used to receive the visible light signal from the LED tunnel light unit;
[0031] The UWB base station is set on both sides of the road in the tunnel. The UWB base station measures the UWB positioning pulse and converts the measurement result into a visible light signal through the visible light signal sending device configured at the local end, and then sends it to the LED tunnel light unit;
[0032] The LED tunnel light unit receives and analyzes the visible light signal ...
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The invention provides an in-tunnel vehicle positioning system based on visible light communication and UWB. The in-tunnel vehicle positioning system comprises a vehicle unit, a UWB positioning base station, an LED tunnel lamp unit and a server, wherein the vehicle unit is provided with a UWB label and a visible light signal receiving device, the UWB label is used for continuously sending UWB positioning pulses, and the visible light signal receiving device is used for receiving visible light signals from the LED tunnel lamp unit; the UWB base stations are arranged on the two sides of a road in a tunnel, the UWB base stations measure UWB positioning pulses, convert measurement results into visible light signals and send the visible light signals to the LED tunnel lamp unit; the LED tunnel lamp unit receives and analyzes the visible light signal from the UWB base stations to obtain a measurement result, and then sends the measurement result to the server; and the server calculates the position information of the vehicle unit according to the measurement result and issues the position information to the LED tunnel lamp unit, and the LED tunnel lamp unit converts the position information into a visible light signal and sends the visible light signal to the vehicle unit in the tunnel. According to the invention, vehicle positioning in the tunnel can be realized on the premise of not depending on GPS positioning.
Description
technical field [0001] The invention relates to the field of optical communication, in particular to a vehicle positioning system in a tunnel based on visible light communication and UWB. Background technique [0002] There is usually no GPS signal coverage in the tunnel, so when the vehicle is driving in the tunnel, it cannot obtain the position of itself and other vehicles through GPS positioning. safety. If the weather with poor lighting conditions, such as rain, snow, fog and other weather, the visibility in the tunnel will be worse than usual, and the safety factor of driving will decrease under the condition of disengaging from GPS positioning assistance. Contents of the invention [0003] Purpose of the invention: In order to overcome the defects of the prior art, the present invention proposes a vehicle positioning system in a tunnel based on visible light communication and UWB, which can realize vehicle position positioning in a tunnel without relying on GPS. ...
Claims
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IPC IPC(8): H04B10/116H04W4/02H04W64/00G01S5/00G01S5/16G01S5/02
CPCG01S5/0018G01S5/0242G01S5/0257G01S5/16H04B10/116H04W4/025H04W64/003
Inventor 纪宁丁敬锋毛越马军夏崇定
Owner 南京嘉视信电子有限公司