In-tunnel vehicle positioning method based on vehicle infrastructure cooperation
A technology of vehicle positioning and vehicle-road coordination, which is applied to services based on location information, services based on specific environments, vehicle components, etc., and can solve problems such as poor navigation and positioning signals
Pending Publication Date: 2021-09-14
RES INST OF HIGHWAY MINIST OF TRANSPORT
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[0004] In order to solve the above problems, the present invention proposes a vehicle positioning method in a tunnel based on vehicle-road coordination. Through this method, when the navigation and positioning signal of the vehicle in the tunnel is not good, the vehicle-road coordination communication between the vehicle and the monitoring center can be used. technology to calculate the position information of the vehicle, which is efficient and accurate. It is a new method that no one has proposed so far.
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[0021] The present invention will be described in detail below in conjunction with accompanying drawings and embodiments, but those skilled in the art should know that the following embodiments are not the only limitation to the technical solution of the present invention, and any work done under the spirit of the technical solution of the present invention Equivalent transformation or modification shall be considered as belonging to the protection scope of the present invention.
[0022] The present invention proposes a vehicle-road coordination-based vehicle positioning method in a tunnel. The method is based on vehicle-mounted cameras and vehicle-mounted terminals, which are conventional vehicle infrastructure, combined with vehicle positioning mark points set in the tunnel, and combined with the vehicle positioning points stored in the tunnel monitoring platform. A coordinate database implementation such as figure 1 shown.
[0023] Therefore, based on the vehicle position...
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The invention discloses an in-tunnel vehicle positioning method based on vehicle-road cooperation. The method is realized based on a vehicle-mounted camera, a vehicle-mounted terminal, vehicle positioning mark points arranged in a tunnel and a coordinate database stored in a tunnel monitoring platform. The vehicle positioning mark points can be shot by a vehicle-mounted camera; the vehicle positioning mark points correspond to lane position information, and the positioning mark points and the corresponding lane position information are pre-stored in the coordinate database; the vehicle-mounted terminal obtains vehicle positioning mark points through image processing and uploads the vehicle positioning mark points to the coordinate database, corresponding lane position information is extracted from the coordinate database and fed back to the vehicle-mounted terminal, and therefore the vehicle is positioned. According to the invention, vehicle positioning in the tunnel is realized through the vehicle-road cooperation technology, the positioning information obtaining mode is simple and accurate, and the problem that a traditional positioning system fails in the tunnel is solved.
Description
technical field [0001] The invention relates to a vehicle positioning technology in a tunnel, in particular to a vehicle positioning method in a tunnel based on vehicle-road coordination, and belongs to the technical field of vehicle-road coordination and vehicle positioning. Background technique [0002] With the acceleration of highway construction in our country, especially the development of highways in mountainous areas, the number of tunnels has increased dramatically. Tunnels have the characteristics of narrow internal space, complex structure, and strong sealing, and the outer shell of long tunnels is generally composed of mountain rock walls or reinforced concrete, which has a serious shielding effect on signals. With the deepening of the tunnel, the positioning signal of GNSS (Global Navigation Satellite System, Global Navigation Satellite System) will gradually disappear, and the accurate positioning of the vehicle cannot be realized within the effective range. F...
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IPC IPC(8): H04W4/029H04W4/40
CPCH04W4/029H04W4/40
Inventor 李文亮周炜战琦曹琛张学文高金刘智超李臣张禄张沫
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT