A method for identifying obstacles when a car turns

Abstract

The invention discloses a method for identifying obstacles when a car is turning, which includes the following steps: (1) Obtaining the length L of the vehicle body, the width b of the vehicle body and the width B of the lane k ;(2) Measure the proportional relationship n between the steering wheel rotation angle of the car and the deflection angle between the front wheel and the central axis of the car body, (3) Calculate the deflection angle between the front wheel and the central axis of the car body; (4) Calculate the car radar (5) Calculate the straight-line distance Sx1 from the edge of the track to the sideline of the curve when the car turns; (6) Calculate the straight-line distance Sx2 from the car radar to the sideline of the curve; (7) Compare the straight-line distance Sx2 from the car radar to the sideline of the curve with the distance Sc of the obstacle actually detected by the radar. If Sx2>Sc, it is marked as an obstacle, and if Sx2<Sc, it is judged as a non-obstacle. The invention can calculate and judge the distance of the obstacle detected by the radar when the car is turning, so as to reduce the wrong interference to the driver.

Description

technical field [0001] The invention relates to the technical field of automobile radar, in particular to a method for identifying obstacles when an automobile turns. Background technique [0002] In recent years, with the rapid development of the economy, more and more people are using cars as a means of transportation. With the rapid increase in the number of cars, traffic accidents occur frequently, resulting in an astonishing number of loss of life and property. The car anti-collision system can play the role of anti-collision warning. The existing car anti-collision system mainly detects the road conditions in real time through cameras, radars and sensors. When an emergency occurs, it will give timely feedback to the driver through the alarm device, or, The control system and relevant actuators cooperate with emergency braking, so as to play the functions of early warning and collision avoidance. [0003] Take the millimeter-wave radar as an example, the detection rang...

AI Technical Summary

Problems solved by technology

[0003] Take the millimeter-wave radar as an example, the detection range of the radar is generally about 30 meters, which is suitable for driving in a straight line. However, when the car is turning, if the figure 1 As shown, when one's own vehicle 1 is turning, the radar detection range 3 will spread to the opposite opposite lane. If the opponent's vehicle 2 in the opposite lane happens to be within the radar range 3, it will be mistaken for an obstacle

However, it is obvious that the opposite vehicle in the opposite lane will not pose a threat to one's own vehicle, which will cause the system to make a wrong judgment and image the driver's driving.

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