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L2-level automatic driving vehicle takeover alarm system and method

An automatic driving and vehicle technology, which is applied to vehicle components, driver input parameters, control devices, etc., can solve the problems of not considering the driver's state and insufficient time for taking over, and achieve the effect of avoiding unnecessary interference

Active Publication Date: 2021-01-01
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology

However, this patent only considers the driving task handover reminder in the exit scenario defined by the system, and does not consider the driver's status, that is, the influence of the driver's takeover ability on the timing of driving task handover, nor does it consider the interaction between different reasons. The impact of the timing of task handover; and the current accidents that occur when using the L2 level automatic driving system show that the driver did not respond to the system takeover request in time, and the system has insufficient time to take over for possible emergencies, which also lead to accidents. Key factor

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  • L2-level automatic driving vehicle takeover alarm system and method
  • L2-level automatic driving vehicle takeover alarm system and method
  • L2-level automatic driving vehicle takeover alarm system and method

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Embodiment Construction

[0043] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0044] see figure 1 As shown, this embodiment discloses a method for taking over an alarm for an L2-level automatic driving vehicle, including the following steps:

[0045] (S1) Detect the driver's state, and obtain the driver's state takeover alarm revision coefficient K corresponding to the driver's state DSts ;Detect the environmental conditions and obtain the environmental condition takeover alarm revision coefficient K under the corresponding environmental conditions ESts ;Calculate total takeover alarm revision coefficient K=K DSts × K ESts .

[0046] (S2) Detect vehicle data information and lane line information in real time, calculate the revised collision time TTC'=K×TTC, the revised deceleration difference Δabs’=K×Δabs and the revised distance from the outer edge of the vehicle’s wheel to the corresponding side The lateral dis...

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Abstract

The invention discloses an L2-level automatic driving vehicle takeover alarm method. The method comprises the steps of detecting a driver state, calculating a driver state takeover alarm revision coefficient KDSts, detecting an environmental condition, calculating an environmental condition takeover alarm revision coefficient KESts, and calculating a total takeover alarm revision coefficient K = KDSts * KESts; and obtaining a revised takeover alarm condition by utilizing the total takeover alarm revision coefficient K, judging whether to send out a takeover alarm request or not according to the revised takeover alarm condition, and triggering the highest-level takeover alarm if the takeover alarm request needs to be sent out. The invention further discloses an L2-level automatic driving vehicle takeover alarm system, and when the L2-level automatic driving system is used, takeover alarm with the reasonable warning degree can be sent out in time.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to an L2 level automatic driving vehicle takeover alarm system and method. Background technique [0002] The L2 level automatic driving system is a key milestone technology for the realization of driverless vehicles. It realizes automatic control of vehicle acceleration and deceleration and keeps the vehicle driving in the lane. steering control. Based on the L2 autonomous driving system, higher levels of autonomous driving can be gradually realized by improving the performance of the system in terms of perception, information fusion, and reliability. [0003] The L2 automatic driving system cannot cope with all abnormal events within its range of use. Therefore, when using an L2 automatic driving system, the driver needs to monitor the system's operating status and road environment in real time, and take over control of the vehicle in a timely and active manner wh...

Claims

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Application Information

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IPC IPC(8): B60W50/14B60W50/16B60W60/00
CPCB60W50/14B60W50/16B60W2040/0827B60W2540/26B60W60/0059B60W2540/229
Inventor 任传兵马奉林杨大谦卢斌肖雄
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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