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An active obstacle avoidance system for electric vehicles

An electric vehicle and obstacle avoidance technology, which is applied in the field of active obstacle avoidance systems, can solve problems such as the difficulty in judging the collision of electric vehicles and the failure of the obstacle avoidance system to consider the impact of obstacles/foreign objects on the selection of obstacle avoidance strategies.

Active Publication Date: 2021-08-31
刘乐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the existing technology, the obstacle avoidance system does not take into account the influence of factors such as road conditions, battery reserve, and the shape of obstacles / foreign objects on the selection of obstacle avoidance strategies.
In addition, in the prior art, the determination of whether the detected object has a structure to the obstacle of the electric vehicle is qualitative or semi-qualitative and semi-quantitative, and is determined based on the theory of particle collision. It is difficult to determine whether the obstacle can indeed cause electric car crash

Method used

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  • An active obstacle avoidance system for electric vehicles
  • An active obstacle avoidance system for electric vehicles

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Embodiment 1

[0035] This embodiment discloses an active obstacle avoidance system, especially an electric vehicle obstacle avoidance system, an electric vehicle active obstacle avoidance system. The active obstacle avoidance system can at least generate an obstacle avoidance strategy that changes the rotation speed of each wheel hub motor of the electric vehicle according to different road condition information, inherent parameters / movement parameters of foreign objects and the remaining power of the electric vehicle. As the power source of electric vehicles, electricity is the energy output for implementing obstacle avoidance strategies. As a preferred obstacle avoidance system, this embodiment has obvious advantages compared with the prior art in that a reasonable safety model can be selected according to different road condition information, and a reasonable safety state can be selected according to the inherent parameters / motion parameters of foreign objects. Level, according to the re...

Embodiment 2

[0053] This embodiment discloses an electric vehicle, which is provided with an obstacle avoidance system. The obstacle avoidance system can at least generate an obstacle avoidance strategy that changes the rotation speed of each wheel hub motor of the electric vehicle according to different road condition information, inherent parameters / movement parameters of foreign objects and the remaining power of the electric vehicle.

[0054] Preferably, the central processing unit 4 of the obstacle avoidance system determines whether the foreign object threatens the driving of the electric vehicle based on the driving state parameters and the inherent parameters / motion parameters of the foreign object when the third monitoring unit 3 monitors that there is a foreign object in the driving direction of the electric vehicle Safety. When the central processing unit 4 judges that the foreign object threatens the driving safety of the electric vehicle, the central processing unit 4 marks th...

Embodiment 3

[0056] This embodiment discloses an active obstacle avoidance method for an electric vehicle, aiming at at least generating an obstacle avoidance strategy that can change the rotation speed of each hub motor of the electric vehicle in combination with the remaining battery capacity of the electric vehicle under different road condition information and different foreign objects. The method includes:

[0057] S1: The central processing unit 4 reads the safety mode in the model library 5 based on the road condition information when the third monitoring unit 3 monitors that there is a foreign object in the driving direction of the electric vehicle, and based on the driving state parameters and the inherent parameters / motion parameters of the foreign object Determine whether foreign objects threaten the driving safety of electric vehicles;

[0058] S2: When the central processing unit 4 determines that the foreign object threatens the driving safety of the electric vehicle, the cen...

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Abstract

The present invention relates to an active obstacle avoidance system of an electric vehicle. In the case that the third monitoring unit monitors that there is a foreign object in the driving path of the electric vehicle, the central processing unit reads the safety mode in the model library based on the driving state parameters. and road condition information combined with the inherent parameters / motion parameters of the foreign object to determine whether the foreign object threatens the driving safety of the electric vehicle; when the central processing unit determines that the foreign object threatens the driving safety of the electric vehicle, the central processing unit marks the foreign object as the target obstacle, and The central processing unit evaluates the driving safety of the electric vehicle based on the inherent attributes of the electric vehicle, driving state parameters, road condition information, and inherent parameters / movement parameters and generates a safety status level. Levels correspond to obstacle avoidance strategies.

Description

technical field [0001] The invention belongs to the technical field of automobile obstacle avoidance, and relates to an active obstacle avoidance system of an electric automobile. Background technique [0002] With the development of technology, new energy vehicles mainly electric vehicles have appeared on the market, and the utilization rate of electric vehicles has continued to increase. For ordinary cars, each wheel and steering component are not independent of each other, and a mechanical transmission system is required for transmission to realize the transmission function between the wheel and the rotating component, and a steering wheel system with a brake mechanism and mechanical linkage is required. [0003] Electric vehicles are powered by vehicle-mounted power supplies, and use motors to drive the wheels. Vehicles that meet the requirements of road traffic and safety regulations. Electric vehicles are different from ordinary vehicles. Electric vehicles use a four-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/08B60W40/00B60W40/02B60W40/06B60W40/10
Inventor 刘乐
Owner 刘乐