Curve vehicle speed control method and curve vehicle speed control system

A vehicle speed control and curve technology, which is applied in the control/regulation system, speed/acceleration control, control device, etc., can solve the problems of unfavorable drivers to adjust the vehicle speed, the short time for the driver to slow down, and the danger of rollover, etc., to achieve The effect of avoiding vehicle rollover accidents

Inactive Publication Date: 2019-05-28
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned anti-rollover warning method for vehicle entering a curve can serve the purpose of reminding the driver to slow down when the vehicle enters the curve, the above-mentioned method relies on the calculation of the limit vehicle speed based on a road condition at a fixed distance in front of the vehicle, which is easy There are the following problems: 1. If the calculation is based on a road condition with a small fixed distance, the time for the driver to slow down when the vehicle enters a corner is too short, and the driver may have the disadvantage of not having time to slow down; 2. If the calculation is based on a road condition with a relatively large fixed distance, because the specific road conditions in the curve are complex and changeable, the matching between the speed limit calculated by the vehicle in the curve and the position speed described by the vehicle is poor, which is not conducive to the driver's timely Regulating the speed of the vehicle, there is still an inevitable risk of rollover

Method used

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  • Curve vehicle speed control method and curve vehicle speed control system
  • Curve vehicle speed control method and curve vehicle speed control system
  • Curve vehicle speed control method and curve vehicle speed control system

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Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the vehicle includes a power supply module 1 , a vehicle information collection module 2 , a road information collection module 3 , a storage module 4 , a curve speed control system 5 and a braking module 6 . The curve speed control system, for example, can be a vehicle controller or a dedicated controller, including a memory, a processor, and a computer program stored in the memory and operable on the processor, and the above steps can be realized when the processor executes the program (1), (2), (3).

[0028] Among them, the power supply module 1 uses the whole vehicle power supply to provide power for the curve speed control system 5, the vehicle information collection module 2 collects information such as vehicle speed, acceleration and brake chamber pressure, and the road information collection module 3 collects and installs information on the front of the vehicle. High-definition camera or high-precision map information; the storage mod...

Embodiment 2

[0055] The difference between this embodiment and Embodiment 1 of a method for controlling the speed of a curve is that: if the current speed is greater than the upper limit speed, a reminder message is sent to remind the driver to slow down, and the driver controls the vehicle to brake.

Embodiment 3

[0057] There are two road curvature detection points in both embodiment 1 and embodiment 2, but the conception of the curve speed control method of the present invention is not limited to the technical solution where the curvature detection points are 2, and it is logically reasoned by those skilled in the art It can be seen that the concept of the curve speed control method of the present invention is still applicable to the situation where the road curvature detection points are more than 3.

[0058] This embodiment provides a method for controlling the speed of a curved road, which adopts the method of 5 points: collect the curvature values ​​of the roads or lanes where the 5 points along the forward direction of the vehicle are from near to far, and record them in turn as ρ 1 ,ρ 2 ,…,ρ 5 .

[0059] If ρ 1 0 , ρ 2 0 , ρ 3 >ρ 0 , ρ 4 >ρ 0 , ρ 5 >ρ 0 , it indicates that the vehicle is before turning, calculate the upper limit vehicle speed corresponding to at least ...

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Abstract

The invention relates to a curve vehicle speed control method and a curve vehicle speed control system, and belongs to the field of vehicle safety control. The method comprises the following steps: (1) acquiring the curvature values of a road or a lane of N points from the near to the distant along the heading direction of the vehicle and sequentially denoting as rho1, rho2,...,rhoN, wherein N ismore than or equal to 2; (2) comparing the curvature value and the set curvature value rho0, calculating the upper limit vehicle speed corresponding to at least one point positioned on the curve if indicating that the vehicle is positioned before turning, and calculating the upper limit vehicle speed corresponding to the at least one point near the vehicle on the curve if indicating that the vehicle is at the curve; and (3) acquiring the current vehicle speed of the vehicle, and braking or reminding if the current vehicle speed is more than the upper limit vehicle speed. The curve entering working condition can be identified early, more time is provided for speed reduction before the vehicle enters the curve, the upper limit vehicle speed can be adjusted timely according to the specific road condition of the curve, and foundation is laid for the vehicle to respond to the specific road condition of the curve in real time.

Description

technical field [0001] The invention relates to a curve speed control method and a curve speed control system, belonging to the field of vehicle safety control. Background technique [0002] With the improvement of domestic road conditions and the continuous improvement of people's demand for vehicles, vehicle safety, especially rollover safety, has become an important issue in the field of vehicle research; with the continuous development of vehicle sensors, effective perception signals are provided for vehicle motion state recognition. It plays an important role in the prevention of vehicle accidents. [0003] In the prior art, a method with the function of preventing vehicle rollover in curves has been disclosed. For example, the Chinese patent document "A System and Method for Anti-rollover of Vehicles in Curves" with the publication number CN103247185A, the vehicle's anti-rollover in curves The reminder method comprises the following steps: 1. collecting the current po...

Claims

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Application Information

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IPC IPC(8): B60W30/04B60W10/18B60W50/14B60K31/00
Inventor 樊金磊史玉娟刘万备王亚飞
Owner ZHENGZHOU YUTONG BUS CO LTD
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