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A kind of L2 automatic driving vehicle takeover alarm system and method

An automatic driving and vehicle technology, applied in the direction of vehicle components, driver input parameters, control devices, etc., can solve the problems of not considering the driver's state, insufficient reserved takeover time, etc., and achieve the effect of avoiding unnecessary interference.

Active Publication Date: 2021-11-02
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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  • A kind of L2 automatic driving vehicle takeover alarm system and method
  • A kind of L2 automatic driving vehicle takeover alarm system and method
  • A kind of L2 automatic driving vehicle takeover alarm system and method

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Embodiment Construction

[0043] DETAILED DESCRIPTION OF THE INVENTION The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0044] See figure 1 , The present embodiment discloses an embodiment of an autonomous vehicle to take over the L2 level alarm call method, comprising the steps of:

[0045] (S1) detecting the state of the driver, the driver corresponding to the driver's condition acquiring the takeover state alarm revision coefficient K DSts ; Detecting ambient conditions, environmental conditions acquired environmental conditions taken over a corresponding alarm revision coefficient K ESts ; Takeover alarm calculating the total revision coefficient K = K DSts × k ESts .

[0046] (S2) real-time detection of the vehicle data and the lane line information, the collision time after calculating the revised TTC '= K × TTC, revised deceleration difference Δabs' = outside of the vehicle wheel after the K × Δabs and revision edge dist...

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Abstract

The invention discloses a takeover alarm method for an L2 level automatic driving vehicle, which detects the state of the driver and calculates the correction factor K for the takeover alarm of the driver's state DSts , detect the environmental conditions, and calculate the environmental conditions to take over the alarm revision coefficient K ESts , calculate the total takeover alarm revision coefficient K=K DSts × K ESts ; Utilize the total takeover alarm revision coefficient K to modify and obtain the revised takeover alarm condition, judge whether to send a takeover alarm request through the revised takeover alarm condition, and trigger the highest level takeover alarm if necessary. The invention also discloses a takeover alarm system for an L2-level automatic driving vehicle, which can timely issue a takeover alarm with a reasonable warning level when the L2-level automatic driving system is used.

Description

Technical field [0001] The present invention relates to a vehicle control technology, and in particular, to a system and method for alarm level L2 autopilot to take over the vehicle. Background technique [0002] L2 level autopilot system is a key milestone in unmanned vehicle technology, which implements the automatic control of acceleration and deceleration of the vehicle and keep the vehicle traveling in the lane, but also to automatically follow the vehicle in front stop, start, and can follow the trajectory of the vehicle in front steering control. In the L2 level autopilot system, based on the perception by the system to enhance the performance aspects of ability, information fusion capability and reliability, can gradually achieve a higher level of autopilot. [0003] L2 level autopilot system can not cope with all the unusual events within its scope of use. Therefore, when using the L2 level autopilot system, you need real-time monitoring system driver running, road envir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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