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Traffic information acquisition method and apparatus

A technology of road condition information and acquisition method, applied in the field of radar, can solve problems such as poor lane resolution and short detectable distance, and achieve the effect of increasing the measurement distance and improving resolution

Active Publication Date: 2017-05-24
西安象德信息技术有限公司
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Problems solved by technology

[0008] The purpose of the present invention is to provide a road condition information acquisition method and device to solve the technical problems of the existing road condition information acquisition method with relatively short detectable distance and relatively poor lane resolution

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  • Traffic information acquisition method and apparatus
  • Traffic information acquisition method and apparatus
  • Traffic information acquisition method and apparatus

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Embodiment Construction

[0028] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the figures, structurally similar units are denoted by the same reference numerals.

[0029] Such as figure 1 As shown, the radar 10 of the present invention is pre-installed on the traffic light bracket, and the bracket is also provided with slide rails. Radar 10 is installed on the slide rail. During detection, radar 10 can move left and right on the slide rail to obtain information such as the number of vehicles on the multiple lanes 101-106, the ...

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Abstract

The present invention provides a traffic information acquisition method and apparatus. The method includes the following steps that: the resolution angle of a lane to be detected with respect to a radar within a preset distance is acquired; the wavelength of current transmission signals of the radar is acquired; the synthetic aperture length of the radar is acquired according to the wavelength and the resolution angle; and the traffic information of the lane to be detected is acquired according to the synthetic aperture length. According to the traffic information acquisition method and apparatus of the invention, the traffic information of the lane is detected through vertically-distributed receiving / transmitting channels of the radar, and therefore, measurement distances can be increased, and the resolution of the lane and the accuracy of the traffic information can be improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of radar technology, in particular to a method and device for acquiring road condition information. [0003] 【Background technique】 [0004] The existing road condition information acquisition method adopts intelligent traffic light sensing technology, which is mainly detected by ground sense coils. Therefore, it is necessary to bury 50m ground sense coils starting from the traffic lane. [0005] However, this method cannot sense congestion in intersection areas, and the construction and maintenance costs of embedding ground induction coils are high. In addition, the detectable distance of other existing road condition detection methods is relatively short and the lane resolution is poor. Generally, the vehicle lane can be accurately distinguished within 20m. And it is easily affected by the environment. For example, the detectable distance is greatly reduced under weather conditions such as smog, night, rain...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88
CPCG01S13/88
Inventor 张焕颖
Owner 西安象德信息技术有限公司
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