Positioning method and system of automatic driving automobile

A technology of automatic driving and positioning method, which is applied in the direction of satellite radio beacon positioning system, radio wave measurement system, measuring device, etc., which can solve the problems of large positioning error, potential safety hazards, and easy blocking of satellite signals, so as to improve positioning accuracy and safety effects

Active Publication Date: 2019-04-05
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

[0004] The invention provides a positioning method and system for an automatic driving vehicle, which solves the problem that the existing automatic driving vehicle may have large positioning errors and cause potential safety hazards when satellite signals are easily blocked, and can improve the positioning accuracy of the automatic driving vehicle and security

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  • Positioning method and system of automatic driving automobile
  • Positioning method and system of automatic driving automobile

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0035] In view of the fact that current self-driving cars rely on vehicle positioning, if the vehicle is in a situation where satellite positioning signals are susceptible to interference, there may be a safety problem in automatic driving caused by positioning errors. The invention provides a positioning method and system for a self-driving car. By collecting traffic environment information around the vehicle and calculating the theoretical positioning coordinates of the vehicle through high-precision maps, the theoretical positioning coordinates of the vehicle are then compared with the satellite positioning coordinates. If the deviation is greater than the set threshold , the positioning data is corrected. It...

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Abstract

The invention provides a positioning method and system of an automatic driving automobile. The positioning method of the automatic driving automobile comprises the following steps: collecting trafficenvironment information around a vehicle, wherein the traffic environment information includes: a lane line of a road on which the vehicle travels, a distance between a wheel and the lane line, a roadcurvature of the road on which the vehicle travels, and a distance between the vehicle and a surrounding reference object; obtaining a high-precision map of the vehicle position, and calculating a theoretical positioning coordinate of the vehicle according to the traffic environment information and the high-precision map; and obtaining a satellite positioning coordinate of the vehicle through a navigation and positioning system, and correcting the vehicle positioning data through a manual input manner if the difference between the satellite positioning coordinate and the theoretical positioning coordinate is greater than a first preset threshold. The invention can improve the positioning accuracy and safety of the automatic driving automobile.

Description

technical field [0001] The invention relates to the technical field of automatic driving of automobiles, in particular to a positioning method and system for automatic driving automobiles. Background technique [0002] With the advancement of the times and the development of technology, self-driving cars will become a reality in the near future. The arrival of self-driving cars not only provides great convenience to our lives, but also Sensors can greatly reduce the traffic accident rate. [0003] High-precision maps and positioning systems are important components of future self-driving cars. High-precision maps and positioning systems can not only provide passengers with efficient route planning solutions, but also provide guarantees for the safe driving of self-driving vehicles. At present, the high-precision positioning system used for autonomous driving prototype vehicles is the combined positioning of global satellite navigation and positioning system (GNSS) + inertia...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/42G01S19/40
CPCG01S19/40G01S19/42
Inventor 张雷张一营徐毅林吴琼时利袁宁徐春梅岳丽娇曾伟
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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