An intelligent turn signal system for vehicle lane change

Abstract

The invention discloses an automobile road changing steering light intelligent starting system. The automobile road changing steering light intelligent starting system comprises a control unit, the input end of the control unit is internally connected with a steering wheel turning angle detector, a velocity sensor and a timer, the output end of the control unit is connected with the input end of a steering light control switch, and the output end of the steering light control switch is internally connected with a left steering light and a right steering light. According to the automobile road changing steering light intelligent starting system, on the base of considering influences of steering wheel angles on road changing actions, the influences of the travel speed and steering wheel turning angle holding time on the real road changing action are carefully considered, a specific function relation expression between the travel speed, the steering wheel turning angle and the road changing time is put forward, two types of different determining conditions aiming at actions of normal road changing and road changing at a small angle are given, and accurate determination on the road changing action can be achieved.

Description

technical field [0001] The invention relates to the field of automobile auxiliary safety electronic devices, in particular to an intelligent opening system for automobile lane-changing turn signals. Background technique [0002] Automobile turn signals are an important part of automobile safety facilities, and their correct use can effectively remind other vehicles, reduce the hidden dangers of traffic accidents, and reduce the probability of traffic accidents, especially when changing lanes on expressways and expressways, turn on the steering in time Lights are particularly important to avoid vicious collision accidents, but in practice the control of the turn signal is done by manual operation, and due to various reasons, the driver often cannot turn on the turn signal normally as required when changing lanes, which often makes the The driver of the car behind did not dodge enough to cause a major traffic accident. In this regard, some people have made some relevant discu...

AI Technical Summary

Problems solved by technology

[0003] Most of the previous turn signal automatic control schemes only considered the size of the steering wheel angle and the vehicle speed, but did not consider the maintenance time of the steering wheel angle. The consideration of the relationship between the vehicle speed and the steering wheel angle was not detailed and specific enough, and did not describe the change of the vehicle speed. How does it affect the lane-changing behavior of the vehicle? For example, when the vehicle speed is high, the steering wheel's steering angle tends to be small. This is because when the vehicle speed is high, if a large angle is used to change lanes, the vehicle may roll over

[0004] It can be seen that the shortcomings of the above-mentioned related control schemes mainly lie in: no specific relationship between the vehicle speed and the steering wheel angle is proposed, which makes the control system less sensitive to the vehicle speed and cannot flexibly control the steering according to the change of the vehicle speed. Turning on and off the lights, and simply controlling the turn on and off of the turn signal based on the vehicle speed and the steering wheel angle, without considering the cumulative time value of the steering wheel angle exceeding a certain angle, will cause the turn signal to be turned on by mistake, resulting in the turn signal being turned on and off. In addition, when the vehicle is running at high speed, it usually only needs a small steering wheel angle to complete the lane change process, and this angle is usually smaller than a given threshold, which will lead to such a situation: the vehicle actually It is changing lanes, but the turn signal is not turned on, that is, the automatic turning on device of the turn signal cannot fully recognize the actual lane change behavior, especially the small angle lane change behavior

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