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Object detector for a vehicle

一种物体识别、车辆的技术，应用在采用光学装置、测量装置、利用再辐射等方向，能够解决难大型卡车或路上结构物区别开、先行车辆6测量距离变远、测量距离变近等问题

Inactive Publication Date: 2008-07-09
OMRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the device of Patent Document 3, with the above operation, even if the speed of the preceding vehicle 6 does not change actually, when the preceding vehicle 6 starts to pass under the signboard 3, there is a problem that the measurement distance to the preceding vehicle 6 becomes longer.
In addition, in Patent Document 3, if the shorter distance is selected, there is a problem that when the preceding vehicle 6 has passed the signboard 3 this time, the measurement distance to the preceding vehicle 6 becomes shorter.
[0015] In this way, there is such a problem that in Patent Documents 1 and 2, it is difficult to distinguish large trucks or road structures from kanbans. In addition, in Patent Document 3, the difference between the measurement and the preceding vehicle passing under the kanban is difficult. error in distance

Method used

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  • Object detector for a vehicle
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Examples

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Embodiment Construction

[0050] 5 is a diagram showing the relationship between the own vehicle and the preceding vehicle to which the vehicle object recognition device according to the embodiment of the present invention is applied.

[0051] The object recognition device for a vehicle according to the present embodiment includes a relative position measuring device 7 including a near-infrared laser radar (hereinafter referred to as L / R) that irradiates a near-infrared laser beam (detection beam) forward. ) 2, measuring the distance to the reflecting object, and measuring the relative position of the reflecting object according to the beam azimuth information; In this embodiment, a high dynamic range CMOS (Complementary Metal Oxide Semiconductor) camera (hereinafter referred to as HDRC) is used as the camera. By using HDRC, even when the road surface is dark and the surroundings are very bright, or when passing through a tunnel, the image of the front can be obtained without any problem. However, it i...

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Abstract

An on-vehicle object detector has both a relative position measuring device and an image-taking device. The relative position measuring device is for scanning a frontal area with a beam of electromagnetic waves and measures distance L1 and direction to an object that reflects the waves. The image-taking device is for obtaining an image above a traffic lane in front and measures distance L2 to an object detected on this image. The vertical angle of spread of the electromagnetic beam is reduced if it is indicated by these devices that there is an object for which |L1 - L2| satisfies a specified condition, indicating that there is an overhead road sign which is likely to affect the accuracy of measurement.

Description

technical field [0001] The present invention relates to a device for recognizing the relative position of an object existing ahead by scanning the front with an electromagnetic beam, and more particularly to a vehicle that does not cause errors in distance measurement when there is a road marking board or the like (hereinafter referred to as a kanban) above a lane Object recognition device. Background technique [0002] A distance measuring device is used in a moving body, especially a car, and the distance measuring device measures the distance between a radar (whether optical or radio) beam using electromagnetic waves and measuring the time until the beam is reflected back. Distance between reflective objects ahead, this measurement can be used in vehicle control etc. For example, if the reflective object ahead is a vehicle, the measurement results can be used for vehicle speed control. In addition, by using a two-dimensional beam, it is also possible to detect the beam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01S13/931G01S17/86
CPCG01S2013/9375G01S13/931G01S2013/9321G01S2013/9325G01S13/86G01S17/023G01S2013/9357G01S7/4972G01S13/723G01S13/867G01S2013/9323G01S2013/9322G01S2013/93271G01S17/86G01S7/4034G01S7/4026
Inventor 安藤丹一藤冈良治
Owner OMRON CORP