A driving control method for electric vehicles based on road information

Abstract

The invention provides an electric car drive control method based on road information. The method comprises the following steps: acquiring external information, wherein the external information contains position information and time state information of a next traffic light; acquiring car self-information, wherein the car self-information includes gear information, acceleration information or brake information and current car speed; calculating the distance from the current position of the car to the position of the ahead traffic light according to the time state information of the next traffic light, calculating the time for reaching the position of the traffic light ahead according to the current car speed in conjunction with the current acceleration information or brake information; calculating a target car speed, notifying a driver of the calculated target car speed, and instructing the driver to drive a car according to the target car speed. According to the method, by introducing the position of the traffic light and the time state information of the traffic light, the time for frequent accelerating and decelerating the car speed, and the idle waiting time which are for adapting to the traffic light ahead can be shortened, and the efficiency of a drive system can be improved.

Description

technical field [0001] The invention relates to a drive control technology of an electric vehicle, in particular to a drive control method for an electric vehicle based on road information. Background technique [0002] In the traditional car driving mode, the driving of the car is only based on the vehicle's own information and the driver's subjective will, and does not take the road ahead information as a reference for comprehensive consideration. Due to the lack of information on the road ahead (such as traffic lights), the car will During the driving process, there will often be acceleration→forced deceleration to stop at the intersection→idling and waiting for a red light→acceleration, resulting in frequent acceleration and deceleration or even rapid acceleration and deceleration in the driving process, accompanied by A large amount of idling waiting time will lead to poor comfort; the theory shows that if the car runs at a relatively uniform speed, it can not only grea...

AI Technical Summary

Problems solved by technology

[0002] In the traditional car driving mode, the driving of the car is only based on the vehicle's own information and the driver's subjective will, and does not take the road ahead information as a reference for comprehensive consideration. Due to the lack of information on the road ahead (such as traffic lights), the car will During the driving process, there will often be acceleration→forced deceleration to stop at the intersection→idling and waiting for a red light→acceleration, resulting in frequent acceleration and deceleration or even rapid acceleration and deceleration in the driving process, accompanied by A large amount of idling waiting time will lead to poor comfort; the theory shows that if the car runs at a relatively uniform speed, it can not only greatly save fuel consumption, but also improve the service life of the car. Therefore, frequent switching of working conditions makes the performance of the vehicle For pure electric vehicles with power batteries as the power source, the above-mentioned defects in the control scheme corresponding to the driving mode need to be improved urgently

Images