Method, device and medium capable of changing radar detection range

Abstract

The invention discloses a method and equipment capable of changing a radar detection range, and a medium, and belongs to the technical field of automotive electronics. The method comprises the following steps: acquiring installation parameters of a radar sensor; receiving an obstacle signal; calculating a coordinate value of the obstacle relative to the radar sensor; screening the coordinate values to obtain a detection range; compared with the prior art, the method is safer, the specific coordinate orientation of the obstacle can be obtained, the radar false alarm rate of the vehicle is reduced, the early warning time of the obstacles on the two sides is prolonged, and a safer radar detection range is set for automatic driving and intelligent parking; the detection data of a plurality of radar sensors and the installation parameters of the vehicle body are integrated, so that the accuracy of the calculated coordinates is higher; the method is easy to implement and low in cost, detection of distance and azimuth coordinates can be achieved by adding a method and system detection combination on the basis of an existing ultrasonic radar system, and the radar detection range can be flexibly adjusted.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a method, device and storage medium that can change the detection range of radar. Background technique [0002] Automotive radars, as the name suggests, are radars for cars or other ground-based motor vehicles. Therefore, it includes a variety of different radars based on different technologies (such as laser, ultrasonic, microwave), with different functions (such as detecting obstacles, predicting collision, adaptive cruise control), and using different working principles (such as pulse radar) , FMCW radar, microwave shock radar). Microwave radar has important commercial significance in automotive radar. The more commonly used anti-collision radar in the existing technology can measure the dangerous obstacles that may cause a collision on the road in front of the vehicle according to the current direction and speed of the vehicle, warn the driver to open the air...

AI Technical Summary

Problems solved by technology

see image 3 , F1, F2, F3, F4, R1, R2, R3, and R4 are ultrasonic radar sensors. The radar sensors F1, F4, R1, and R4 on the side of the vehicle body are too large to detect objects 1 and 2 around the vehicle. Because the detection range of the ultrasonic radar is fan-shaped, it will cause some detection of the area beyond the width of the vehicle body. Obstacles are in the area close to the vehicle, but they will not affect the driving of the vehicle and will be detected, which will easily cause trouble for the driver.

The existing processing method is to design the detection distance of the sensor that will cause this kind of false alarm to be short to solve the problem of vehicle false alarm, please refer to Figure 4 , F1, F2, F3, F4, R1, R2, R3, and R4 are ultrasonic radar sensors. The radar sensors F1, F4, R1, and R4 on the side of the vehicle body have a small detection range and cannot detect objects 1 on the side of the vehicle, nor Object 2 will be detected

The design of the farthest detection distance is short, which will reduce the detection ability and increase the risk of collision

Especially for large vehicles such as commercial vehicles and construction machinery, the rear view is poor and the body inertia is large. Due to the short detection distance, the collision warning time is short and the risk of collision is greater.

[0004] Therefore, the applicant proposes a method that can change the radar detection range to solve the problem that the prior art radar collision avoidance system misreports to the driver.

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