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

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...

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

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