Vehicle control method and device and storage medium
A vehicle control and vehicle technology, applied in control devices, vehicle components, transportation and packaging, etc., can solve problems such as inflexibility and fixed vehicle following distance.
Active Publication Date: 2021-06-08
知行汽车科技(苏州)股份有限公司
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Problems solved by technology
[0004] The present application provides a vehicle control method, device and storage medium, which can solve the problem that the vehicle following distance is fixed and not flexible enough when the following time distance is fixed.
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[0047] The specific implementation manners of the present application will be further described in detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0048] First, some terms involved in this application are introduced.
[0049] Self-driving (Self-driving): It is a smart car that realizes automatic driving through a computer system.
[0050] Adaptive Cruise Control (Adaptive Cruise Control, ACC): It is an intelligent automatic control system. When the vehicle is running, the vehicle distance sensor (such as a radar sensor) installed in the front of the vehicle continuously scans the road ahead of the vehicle, while the wheel speed sensor collects the vehicle speed signal. When the distance to the vehicle in front is too small, the ACC control unit can properly brake the wheels by coordinating with the anti-lock braking system and the eng...
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The invention relates to a vehicle control method and device and a storage medium, and belongs to the technical field of automatic driving. The method comprises the steps that vehicle information collected by a sensor on a current vehicle is acquired; the average vehicle speed of the current vehicle in the preset duration is calculated; the number of other vehicles in a first range determined based on the current vehicle and the vehicle density of other vehicles in a second range determined based on the current vehicle are counted within a preset duration according to the vehicle information; the average vehicle speed, the vehicle number and the vehicle density are input into a pre-trained decision tree to obtain traffic flow state classification; the following time interval between a current vehicle and a front vehicle is dtermined based on the traffic flow state classification; and the distance between the front vehicles is kept according to the vehicle following time interval. The problem that the vehicle following distance is fixed and not flexible enough when the vehicle following time interval is fixed can be solved. The following time interval can be adaptively adjusted according to the traffic flow state, so that the flexibility of vehicle control can be improved.
Description
technical field [0001] The present application relates to a vehicle control method, device and storage medium, belonging to the technical field of automatic driving. Background technique [0002] An autonomous vehicle is an intelligent vehicle that realizes unmanned driving through a computer system. Autonomous vehicles usually have an adaptive cruise control (Adaptive Cruise Control, ACC) function. Vehicles with the ACC function can maintain a preset distance from the vehicle in front to avoid a collision. [0003] In the existing ACC control method, the following time distance of the vehicle is usually fixed, and the control method is not flexible enough. Contents of the invention [0004] The present application provides a vehicle control method, device and storage medium, which can solve the problem that the vehicle following distance is fixed and not flexible enough when the following time distance is fixed. This application provides the following technical solutio...
Claims
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IPC IPC(8): B60W60/00B60W30/16
CPCB60W60/0016B60W30/16B60W2520/10B60W2554/80B60W2554/805B60W2754/30
Inventor 刘元山
Owner 知行汽车科技(苏州)股份有限公司