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Method and device for detecting automobile radar shielding state

An automotive radar and state technology, applied in measurement devices, radio wave measurement systems, instruments, etc., can solve problems such as threatening driving safety and affecting the final detection result of the measured target.

Active Publication Date: 2020-03-27
BEIJING AUTOROAD TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] When in use, if the millimeter-wave radar is blocked by snow, mud, etc., it may affect the final detection result of the measured target, thereby threatening driving safety

Method used

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  • Method and device for detecting automobile radar shielding state
  • Method and device for detecting automobile radar shielding state
  • Method and device for detecting automobile radar shielding state

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Embodiment Construction

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...

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Abstract

The invention provides a method and device for detecting the shielding state of an automobile radar, and the method comprises the steps: transmitting a first linear frequency modulation signal, the frequency modulation bandwidth of which is a first preset value, to a preset direction through a millimeter-wave automobile radar; wherein the numerical value of the first preset value ranges from 0.1 GHZ to 12 GHZ; receiving a first reflection signal corresponding to the first linear frequency modulation signal through a millimeter wave automobile radar; detecting the intensity of the first reflection signal; and determining the shielding state of the millimeter wave automobile radar according to the intensity of the first reflection signal. According to the embodiment of the invention, the frequency modulation slope of the millimeter-wave radar is set, so that the distance resolution of the millimeter-wave radar can distinguish obstacles in a short distance of the millimeter-wave radar, the detection mode is simple, and the reliability is high.

Description

technical field [0001] The present application relates to the technical field of automatic control, in particular to a method and a device for detecting an automobile radar occlusion state. Background technique [0002] Automotive radar is very important to improve the driving safety performance of the car. Among them, the millimeter-wave radar in the automotive radar has the advantages of high distance resolution, low radiation power, and small size, so it is widely used in the fields of advanced driver assistance systems and automatic driving. The basic working principle of millimeter-wave radar is to continuously and periodically modulate the frequency of the transmitted signal, and analyze the signal frequency at the time of transmission and reception, so as to obtain the relative distance and speed of the measured target. [0003] When in use, if the millimeter-wave radar is blocked by snow, mud, etc., it may affect the final detection result of the target to be measur...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40G01S7/4039
Inventor 高明亮
Owner BEIJING AUTOROAD TECH CO LTD
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