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Device and method for measuring position of mobile reflective target

A technology of reflective targets and infrared light, applied in the navigation field of automatic guided transport vehicles, can solve the problems of wrong judgment, inability to detect the shape and distance of light targets, interference of reflective strips, etc., and achieves low power consumption of the device, rich output interfaces, Fast processing effects

Pending Publication Date: 2019-07-09
SHENYANG SIASUN ROBOT & AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the device only emits a single laser beam to scan the object, the device cannot detect the shape and distance of the light target
In the process of use, it is easy to be interfered by the reflective strip on the operator's clothing, resulting in misjudgment

Method used

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  • Device and method for measuring position of mobile reflective target
  • Device and method for measuring position of mobile reflective target
  • Device and method for measuring position of mobile reflective target

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Such as Figure 1-2 As shown, the device structure of the present invention is composed of an infrared emitting unit, an image acquisition unit, a control and a processing unit. The infrared emitting unit includes an infrared emitting circuit 2 and an 850nm infrared LED lamp 6 . The image acquisition unit includes a lens 3 with a filter. The control and processing unit is the visual processor 7, which adopts the video image processor DM6437. The power supply is used to provide electric energy for each of the above power supplies.

[0039] First, the infrared emitting circuit 2 of the infrared emitting unit controls the switch of the infrared LED lamp 6, and emits infrared rays with a wavelength of 850nm near the lens 3 with a filter, and the infrared emitting angle is 30°. This light shines on the reflective target 1 through the pro...

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PUM

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Abstract

The invention relates to a device and method for measuring the position of a mobile reflection target. The device comprises an infrared emission unit, an image acquisition unit and a control and processing unit which are arranged in a shell. The method comprises the steps that the control and processing unit controls the on-off of an infrared emission circuit so as to control an infrared LED lampto emit infrared light to the mobile reflection target; a global shutter CMOS photosensitive element of the image acquisition unit is controlled to shoot a mobile reflection target image; and the control and processing unit carries out differential processing on the front and back frames of bright and dark mobile reflection target images, removes the influence of ambient light to obtain a to-be-positioned image, and processes the mobile reflection target image by adopting Hough transform to obtain the position of the mobile reflection target. According to the invention, the influence of similar reflective objects and ambient light on the interference of the device can be reduced while more accurate measurement is realized.

Description

technical field [0001] The invention relates to the field of navigation of an automatic guided transport vehicle, in particular to a device and method for measuring the position of a moving reflective target. Background technique [0002] In the prior art, the displacement device in the field of automatic guided vehicles mainly detects the offset position of the reflective target according to the triangulation method. Since the device only emits a single laser beam to scan the object, the device cannot detect the shape and distance of the light target. During use, it is easy to be interfered by the reflective strips on the operator's clothing, resulting in misjudgment. Contents of the invention [0003] The object of the present invention is to provide a device and method for measuring the position of a moving reflective target, which can not only accurately measure the moving distance of the target light target, but also distinguish the characteristic value and position ...

Claims

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Application Information

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IPC IPC(8): G06T7/73G06T7/13G06T7/168G06T7/62G06T7/60
CPCG06T7/73G06T7/13G06T7/168G06T7/62G06T7/60G06T2207/10048G06T2207/20061G06T2207/20224
Inventor 丁振宇张雷卞瑰石汪洵曹智荀于焕
Owner SHENYANG SIASUN ROBOT & AUTOMATION
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