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Automatic guidance system based on radio frequency identification tag and vision and method thereof

A technology of radio frequency identification tags and automatic guidance, which is applied in the directions of character and pattern recognition, collaborative operation devices, two-dimensional position/channel control, etc. Limit the promotion of AGV and other issues to achieve the effect of reducing the impact of light, simple and convenient changes, and advanced technology

Inactive Publication Date: 2008-05-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the Chinese market, the existing manufacturers of AGVS based on visual guidance focus on large-scale warehousing and consider versatility more, and the functions are too numerous. In addition to technical routes and other reasons, the price is still expensive, and the performance-price ratio is still lacking. Market Competitiveness
The price is not acceptable to general enterprises, which limits the promotion of AGV in the domestic market, especially it is difficult to be accepted and applied by small and medium-sized enterprises

Method used

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  • Automatic guidance system based on radio frequency identification tag and vision and method thereof
  • Automatic guidance system based on radio frequency identification tag and vision and method thereof
  • Automatic guidance system based on radio frequency identification tag and vision and method thereof

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Embodiment Construction

[0030]As shown in Figures 1 and 2, the automatic guidance system based on radio frequency identification tags and vision includes a car body 38, and the bottom of the car body 38 is provided with a first steering wheel 2, a second steering wheel 24, a first driving wheel 9, a second steering wheel The drive wheel 17, the central shaft rod 41, the car body 38 is provided with a drive motor 16, the drive motor 16 is connected with the stepless gearbox 10, the drive motor controller 13, the first storage battery 12, and the second storage battery 14, and is characterized in that it includes ground There are two parts, the logo and the on-board system. The ground logo is: there are two parallel guide belts in black and white on the ground, red station characters on both sides of the guide belt, and a radio frequency identification label under the guide belt. The on-board system is: A first obstacle avoidance sensor 11 and a second obstacle avoidance sensor 15 are arranged at the re...

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Abstract

The invention discloses an automatic guidance system based on radio frequency identification labels and vision, and the method of the automatic guidance system. The invention is characterized in adopting a four-wheel structure, wherein two front wheels are used for steering and two rear wheels are used for driving; a direct current motor is used as the travelling and driving device, which is driven to steer by a stepping motor; the invention is provided with a wheel steering angle positioning device, so the invention has relatively high dynamic response ability; a black and white parallel guide belt is adopted as a guide path, with the radio frequency identification labels discontinuously laid below, and red work station characters arranged at both sides; CCD collects road surface information, and the brightness of light source adaptive controls according to image gray information; characters are extracted by utilizing color differences; straight lines are rapidly HOUGH transformed and identified; a control signal is sent to AGV controller after processed by an industrial control computer, and the direct current motor and the stepping motor are controlled. In order to effectively realize the communication dispatch between AGVS in real time, radio frequency identification labels are adopted for positioning, and a wireless transceiver module is adopted for communication between AGVS and a host. The invention has the advantages of good environmental adaptability and navigation precision, and lower cost.

Description

technical field [0001] The invention relates to the technical field of logistics equipment, in particular to an automatic guidance system and method based on radio frequency identification tags and vision. Background technique [0002] AGV (Automatic Guided Vehicle) technology is an important manifestation of the advanced nature of production logistics automation. The current guidance method of AGV determines the flexibility of its logistics system, and is a key factor that determines whether AGV can be further applied to more complex and harsh working environments. , which in turn affects the reliability and operating cost of the logistics system. At present, among the guidance methods that have been researched, developed and applied, there are mainly: electromagnetic induction, optical guidance, chemical guidance, magnetic induction, position inference method, reference mark method, inertial navigation method and image recognition method Wait. Among them, visual guidance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02G06K17/00G06K9/00
Inventor 才辉蔡晋辉张光新侯迪波黄平捷周泽魁郦光府于洋
Owner ZHEJIANG UNIV
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