A method and system for automatic control of turn signal lamps based on automatic driving

Abstract

The invention relates to the technical field of car electronics, in particular to a steering signal lamp automatic control method and system based on automatic driving. When the difference value K of the planned route curvature Kj and the curvature Kr of a road lane line in front of a car driving route exceeds the preset calibration value k0, meanwhile, the angular difference absolute value |theta| of a displacement point P1P of previous time and a displacement point PP2 of later time of a planned route meets the condition that the difference of |theta| and theta0 is larger than zero, and a point P2 is located on the right side of a P1P extension line, a right steering lamp is started; when the difference value K of the planned route curvature Kj and the curvature Kr of the road lane line in front of the car driving route exceeds the preset calibration value k0, meanwhile, the angular difference absolute value |theta| of the displacement point P1P of the previous time and the displacement PP2 of the later time of the planned route meets the condition that the difference of |theta| and theta0 is larger than zero, the point P2 is located on the left side of the P1P extension line, or the real-time distance L of a barrier T in front of the same lane is smaller than the safe distance L0, a left steering lamp is started; and advance control over the steering signal lamps in an automatic driving mode is achieved by judging whether the steering lamps of a car are started or not in advance and turning off the steering lamps at appropriate time.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to an automatic control method and system for a turn signal lamp based on automatic driving. Background technique [0002] When the vehicle changes lanes, turns, starts or stops, the car turn signal light is an important signal device to remind the surrounding vehicle drivers and pedestrians to pay attention to safety. When driving manually, the driver controls the turn signal lights. The existing automatic control methods for turn signal lights are mainly to directly or indirectly measure the rotation of the steering wheel (or steering gear) through sensors to identify the steering action of the car and automatically control the turn signal lights. The speed of the front wheels is used to identify the steering action of the car through the difference in wheel speed and automatically control the turn signal lights. The disadvantage of these automatic control methods i...

AI Technical Summary

Problems solved by technology

When driving manually, the driver controls the turn signal lights. The existing automatic control methods for turn signal lights are mainly to directly or indirectly measure the rotation of the steering wheel (or steering gear) through sensors to identify the steering action of the car and automatically control the turn signal lights. Front wheel speed, through the difference in wheel speed to identify the steering action of the car and automatically control the turn signal lights, the disadvantage of these automatic control methods is that the turn signal lights cannot be turned on before the car turns to achieve the purpose of early warning

There is also the problem of turning on the turn signal lights in advance before the car enters the curve through the auxiliary navigation method, but it cannot meet the early warning at the intersection; and when the vehicle actively avoids the vehicle in front or pedestrians change lanes, the turn signal lights cannot be turned on in advance; there is also a lane. The line is a curve, and the vehicle driving along the curved lane has a steering action and does not need to change lanes, but it does not need to be turned on and the turn signal light is turned on by mistake. With the maturity of automatic driving technology, more and more applications of automatic driving will be obtained.

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