Control method and device for automatic driving system
A technology of automatic driving and control methods, applied in the direction of non-electric variable control, two-dimensional position/channel control, control/regulation system, etc., can solve the problems of long update cycle, poor timeliness, and low accuracy of vehicle driving path, and achieve Improved accuracy and high timeliness
Active Publication Date: 2021-12-28
CHERY AUTOMOBILE CO LTD
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Problems solved by technology
[0004] In the prior art, the update of the map used to plan the driving route for the vehicle is to regularly collect data through special surveying and mapping vehicles and then update based on the collected data. The update cycle is long and the timeliness is poor. The accuracy of the driving path is not high, which is not conducive to the automatic driving of the car
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] figure 1 It is a schematic diagram of an application scenario of an automatic driving system provided by an embodiment of the present invention. Such as figure 1 As shown, multiple vehicle terminals 100 perform data interaction with the cloud platform 200, and the vehicle terminals 100 realize data interaction with the cloud platform 200 through the network. Each vehicle terminal 100 can download map information from the cloud platform 200. The map information includes geographic location information and road feature information corresponding to the geographic location information. The road feature information includes: lane width, road curvature, road gradient, tunnel length, lane line, Pavement arrows and traffic signs. And...
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The invention discloses a control method of an automatic driving system. The method includes: acquiring map information in real time from a cloud platform, the map information including geographic location information and road characteristic information corresponding to the geographic location information, and the road characteristic information is a plurality of vehicle terminals Collected during driving and sent to the cloud platform; import the map information into the locally stored road feature map; use the grid method to divide the road feature map into multiple grid units with binary information to obtain the grid map; Determine the first grid unit corresponding to the location of the vehicle in the grid map and the second grid unit corresponding to the set end point; plan the path between the first grid unit and the second grid unit in the grid map; according to Path, control the vehicle to drive automatically. The invention can use the real-time updated map with high timeliness to plan the driving path of the vehicle, thereby improving the accuracy of the planned path.
Description
technical field [0001] The invention relates to the field of automatic driving, in particular to a control method and device for an automatic driving system. Background technique [0002] Autopilot system, also known as self-driving car or driverless car, is an intelligent car system that realizes driverless driving through the on-board computer system. At present, autopilot systems usually use maps to plan driving paths for vehicles, navigate the vehicles, and control the driving of the vehicles. During the driving process, sensor components such as video cameras, radar sensors, and laser range finders are used to detect obstacle information around the vehicle, and the vehicle is controlled to avoid obstacles around the vehicle. [0003] In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] In the prior art, the update of the map used to plan the driving route for the vehicle is to r...
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IPC IPC(8): G05D1/02
CPCG05D1/021G05D1/0285
Inventor 周倪青范贤根徐达学
Owner CHERY AUTOMOBILE CO LTD