Millimeter wave radar adaptive adjustment method based on high-precision map

A millimeter-wave radar and adaptive adjustment technology, applied in the field of vehicle radar, can solve problems such as narrow detection angle, inability to accurately identify obstacles, long detection distance, etc., and achieve the effect of avoiding the risk of collision

Pending Publication Date: 2022-02-08
东风悦享科技有限公司
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Problems solved by technology

However, due to the relatively long detection distance of the current forward-facing millimeter-wave radar for automobiles, the detection angle is relatively narrow, and it is fixedly installed on the front bumper of the vehicle. When the front lane is a curve, the vehicle cannot accurately identify the front lane line. obstacle

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  • Millimeter wave radar adaptive adjustment method based on high-precision map
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  • Millimeter wave radar adaptive adjustment method based on high-precision map

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as figure 1 As shown, in the embodiment of the present invention, the following modules are involved: vehicle can, ECU, high-precision map, millimeter-wave radar adjustment motor, millimeter-wave radar, wherein the electrical connection between vehicle CAN and ECU, millimeter-wave radar, millimeter-wave radar adjustment The motor is electrically connected to the ECU, the positioning module is electrically connected to the ECU, and the high-precisio...

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Abstract

A millimeter wave radar adaptive adjustment method based on a high-precision map comprises the steps that a map module is called in a vehicle ECU, and high-precision map information is stored in the map module; and a vehicle ECU receives current vehicle speed information on a vehicle CAN bus and calculates to obtain a safe collision distance TTC-dis, the vehicle ECU generates front TTC collision point coordinates according to the TTC-dis, current qualitative information and high-precision map information, the vehicle ECU converts the front TTC point coordinates (x1, y1) into polar coordinate system coordinates (r1, alpha) based on a vehicle body, and the ECU judges the relation between the angle alpha of the TTC point and the millimeter wave detection angle beta. According to the invention, a millimeter wave radar adaptive adjustment method based on a high-precision map is adopted, the problem that millimeter waves cannot identify collision obstacles on front roads due to turning is avoided, and the collision risk caused by the collision obstacles is avoided.

Description

technical field [0001] The invention belongs to the technical field of vehicle radar, in particular to an adaptive adjustment method of millimeter-wave radar based on a high-precision map. Background technique [0002] As active safety has attracted more and more attention, millimeter-wave radar sensors in the automotive industry have begun to be widely used in passenger cars for detection, early warning and emergency braking of obstacles ahead. However, due to the relatively long detection distance of the current forward-facing millimeter-wave radar for automobiles, the detection angle is relatively narrow, and it is fixedly installed on the front bumper of the vehicle. When the front lane is a curve, the vehicle cannot accurately identify the front lane line. obstacle. Contents of the invention [0003] The patent of the present invention mainly designs a millimeter-wave adaptive adjustment device based on high-precision maps, which can automatically adjust the angle of...

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Application Information

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IPC IPC(8): B60W30/08G01S13/931B60R11/02
CPCB60W30/08G01S13/931B60R11/02B60R2011/0085
Inventor 罗庚尤敏鲁若宇周智颖
Owner 东风悦享科技有限公司
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