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Vehicle automatic lane changing method and system and vehicle

A vehicle and lane-changing technology, which is applied to vehicle components, external condition input parameters, control devices, etc., can solve the problems of increasing vehicle lane-changing safety hazards, limited detection accuracy, and difficulty in ensuring the accuracy of surrounding vehicles

Active Publication Date: 2019-10-08
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that due to the limited detection accuracy of a single sensor, it is difficult to guarantee the accuracy of the motion parameters detected by the surrounding vehicles in this way, so that the vehicle cannot make lane-changing decisions based on the accurate road environment, which increases the Safety hazards of changing lanes

Method used

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  • Vehicle automatic lane changing method and system and vehicle
  • Vehicle automatic lane changing method and system and vehicle
  • Vehicle automatic lane changing method and system and vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0081] see figure 1 , figure 1 It is a schematic flowchart of a method for automatically changing lanes of a vehicle disclosed in an embodiment of the present invention. exist figure 1 In the shown vehicle automatic lane change method, the current vehicle is equipped with a camera device and a short-wave radar, and the vehicle automatic lane change method is applied to the vehicle automatic lane change system, such as figure 1 As shown, the method may specifically include the following steps.

[0082] 101. The vehicle automatic lane change system detects whether the current vehicle satisfies the trigger condition for lane change, if not, execute step 102; if yes, execute step 103-step 104.

[0083] In the embodiment of the present invention, the lane change trigger condition includes: there is a vehicle driving in the current lane in front of the current vehicle; and, the current speed of the current vehicle is less than the expected speed, and satisfies the following formu...

Embodiment 2

[0160] see figure 2 , figure 2 It is a schematic flowchart of another vehicle automatic lane changing method disclosed in the embodiment of the present invention. exist figure 2 In the method shown, the current vehicle is also provided with an ultrasonic radar. Such as figure 2 As shown, the method for automatically changing lanes of a vehicle may include the following steps.

[0161]201. The vehicle automatic lane change system detects whether the current vehicle satisfies the trigger condition for lane change, if not, execute step 202; if yes, execute step 203-step 204.

[0162] 202. The vehicle automatic lane change system controls the current vehicle to move forward on the current lane.

[0163] 203. The vehicle automatic lane change system obtains the first motion parameter of the surrounding vehicles through the camera device, and obtains the second motion parameter of the surrounding vehicles through the short-wave radar.

[0164] 204. The vehicle automatic la...

Embodiment 3

[0224] see Figure 5 , Figure 5 It is a structural schematic diagram of an automatic lane changing system for vehicles disclosed in an embodiment of the present invention. in such as Figure 5 In the shown system, the current vehicle is equipped with a camera and a short-wave radar; the vehicle automatic lane change system may include a detection unit 501, an acquisition unit 502, a first judgment unit 503, a first fusion unit 504, a first determination unit 505 and The first control unit 506, wherein:

[0225] The detection unit 501 is configured to detect whether the current vehicle satisfies the trigger condition for lane change.

[0226] In the embodiment of the present invention, the lane change trigger condition includes that there is a vehicle driving in the current lane in front of the current vehicle, and the current speed of the current vehicle is lower than the expected speed.

[0227] The acquisition unit 502 is configured to acquire the first motion parameter...

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Abstract

The embodiment of the invention discloses a vehicle automatic lane changing method and system and a vehicle. A current vehicle is provided with a camera device and a short-wave radar device. The method comprises the following steps of detecting whether or not the current vehicle satisfies triggering condition of lane changing, and the condition is satisfied, a first motion parameter of surroundingvehicles can be obtained through the camera device, and a second motion parameter can be obtained through the short-wave radar device; judging that whether the current vehicle meets low-speed detection condition, if not satisfying, based on corresponding combined weight of the camera device and the short-wave radar device, data combining is conducted on the first motion parameter and the second motion parameter to obtain a first target location and a first target speed of the surrounding vehicles; and determining a target lane satisfying the condition of lane changing from adjacent lanes at the two sides of the current vehicle based on the first target location and the first target speed of the surrounding vehicles and controlling the current vehicle to change from the current lane to thetarget lane. According to the embodiment of the vehicle automatic lane changing method and system and the vehicle, the security of lane changing of the vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of smart cars, in particular to a vehicle automatic lane change method and system, and a vehicle. Background technique [0002] At present, when a vehicle is driving, if it encounters a slow-moving vehicle in front, it will usually change lanes in order to pursue a faster speed and a more free driving space. The existing lane change method mainly uses a single sensor (such as a camera) installed on the current vehicle to detect the speed, position and other motion parameters of the surrounding vehicles on the adjacent lanes to analyze the road environment of the adjacent lanes on both sides, so as to select a lane change. Optimal lane for lane change. However, in practice, it is found that due to the limited detection accuracy of a single sensor, it is difficult to guarantee the accuracy of the motion parameters detected by the surrounding vehicles in this way, so that the vehicle cannot make lane-changing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W40/04
CPCB60W30/18163B60W40/04B60W2520/10B60W2520/12B60W2554/80
Inventor 谢兆夫
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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