Method, device and system for planning vehicle speed according to navigation path

Abstract

The invention discloses a method, a device and a system for planning a vehicle speed according to a navigation path. The method comprises the following steps: 1, acquiring navigation road information from a start to a destination, the navigation road information comprising the navigation path, a traffic light signal and a road condition information; 2, acquiring a current driving state of a vehicle, the current driving state of the vehicle comprising current position information of the vehicle and a driving speed of the vehicle; 3, obtaining a fluctuating vehicle speed group according to the current driving state of the vehicle and the navigation road information; 4, obtaining time required by the whole path according to each vehicle speed in the fluctuating vehicle speed group, and determining the vehicle speed corresponding to the shortest driving time as an optimal vehicle speed; 5, judging whether the driving speed of the vehicle is adapted to the optimal vehicle speed or not, and if not, prompting a driver to regulate the vehicle speed. According to the method, the driver can be helped to finely adjust the vehicle speed when driving to avoid excessively long time for waiting at traffic lights to fulfill the aims of optimizing the driving experience and realizing green and low-carbon travel.

Description

technical field [0001] The invention belongs to the technical field of intelligent navigation, and in particular relates to a method, device and system for planning vehicle speed according to a navigation path. Background technique [0002] With the expansion of cities in our country, the rapid development of road traffic and the popularization of automobiles, the traffic conditions people face when driving are becoming more and more complex. In the middle of the road, it is inevitable to encounter intersections with signal lights. There is a big difference in the waiting time for signal light conversion when turning left, right, and going straight at the intersection. In the actual driving process, car owners often encounter the situation that they have to slow down and brake when encountering a red light ahead just after refueling and accelerating. During driving, they often try to avoid encountering a red light all the way or reduce braking to reduce fuel consumption, and...

AI Technical Summary

Problems solved by technology

In the prior art, when calculating the length of the road section where the driver's current position is located, only how many traffic lights are marked, without considering the impact of the traffic light transition waiting time at the intersection on the path planning, and there is no prompt to control the speed of the vehicle to effectively reduce or avoid it. How to navigate the waiting time at traffic lights

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