Ramp speed limit identification method

Abstract

The invention relates to the technical field of automobile control, in particular to a ramp speed limit recognition method. The method comprises steps of judging whether the vehicle runs at a high speed or an elevated road; if yes, the lane position where the vehicle travels is judged; and if the vehicle runs on the rightmost lane, judging whether the currently recognized speed limit sign is a ramp speed limit sign or not according to the change condition of the right lane line of the vehicle, the running condition of the vehicle and the comparison condition of the currently recognized speed limit sign and the previous recognized speed limit sign. The ramp speed limit recognition method is simple and small in logical operation amount, does not cause burden to a control system, can accurately and quickly recognize ramp speed limit, is high in accuracy, and has great popularization value.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a ramp speed limit identification method. Background technique [0002] At this stage, intelligent driving can achieve intelligent speed limit control, that is, after the camera captures the speed limit sign, it transmits the speed limit to the control system for automatic speed limit control. However, in special scenarios, such as high-speed and elevated ramp scenarios, the system will misidentify the speed limit of the ramp, causing the system to decelerate incorrectly, giving the driver a poor driving experience and posing safety hazards. The existing ramp speed limit identification method is relatively cumbersome, and the amount of logic calculation is relatively large. For example, the Chinese invention patent named "a method and device for ramp speed limit identification" with the patent number "CN201910404290.9", introduced by where should I live? The ramp spee...

AI Technical Summary

Problems solved by technology

However, in special scenarios, such as high-speed and elevated ramp scenarios, the system will misidentify the speed limit of the ramp, causing the system to decelerate incorrectly, giving the driver a poor driving experience and posing safety hazards

The existing ramp speed limit identification method is relatively cumbersome, and the amount of logic calculation is relatively large. For example, the Chinese invention patent named "a method and device for ramp speed limit identification" with the patent number "CN201910404290.9", introduced by where should I live? The ramp speed limit recognition method is to obtain the speed limit sign information identified from the collected road images, wherein the speed limit sign information includes: speed limit value and auxiliary information; judge whether the speed limit information is a ramp speed limit according to the speed limit information information; if so, then obtain the lane information of the vehicle, the path planning information of the vehicle, the signal light information of the vehicle and the environmental information of the vehicle, wherein the environmental information is used to judge whether the vehicle crosses the right lane line; according to the lane information, The route planning information, the signal light information and the environmental information determine whether the vehicle enters the ramp preparation state; if it is determined that the vehicle enters the ramp preparation state, then according to the ramp speed limit information, determine and prompt the vehicle's speed limit value

From the above description, it can be known that this scheme needs to obtain more information and process more data parameters, which makes the whole identification method more cumbersome and has a large amount of calculation. Such a device method may cause a serious burden on the controller, which is not conducive to popularization and use.

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