Positioning system and positioning method of AGV (Automated Guided Vehicle)

Abstract

The invention discloses a positioning system and a positioning method of an AGV (Automated Guided Vehicle). The system comprises electronic tags, infrared positioning modules and a control module, wherein the electronic tags are prearranged above the running path of the AGV, and further, the tags have tag IDs (Identities); the infrared positioning modules are mounted on the front side and the back side of the walking direction of the AGV, and further, the perpendicular distances of the electronic tags meet a preset threshold value range; the control module is connected with the infrared positioning modules, is used for obtaining the IDs and relative location errors of the electronic tags, which are sent by the infrared positioning modules, and obtains location information of the AGV according to the IDs and the relative location errors of the electronic tags. According to the positioning system and the positioning method of the AGV, through mounting one infrared positioning module on two sides of the AGV respectively; the posture of the AGV is calculated through two-point positioning; the repeated positioning accuracy and the angular positioning accuracy of the AGV are improved; further, the tags are mounted more conveniently; the path is flexibly changed; the cost is lower.

Description

technical field [0001] The invention belongs to the technical field of transportation, and in particular relates to an AGV positioning system and positioning method. Background technique [0002] According to the definition of the American Logistics Association, AGV (Automated Guided Vehicle) refers to a vehicle that is equipped with electromagnetic or optical guidance devices, can drive according to the prescribed guidance route, has trolley running and parking devices, safety protection devices, and various transfer functions. transport trolley. [0003] In my country's national standard "Logistics Terminology", the definition of AGV is: [0004] AGV, equipped with an automatic guidance device, can drive along a prescribed path, and has a programming and parking selection device, a safety protection device, and a handling vehicle with various material transfer functions on the car body. [0005] AGV navigation methods include electromagnetic navigation, tape navigation, ...

AI Technical Summary

Problems solved by technology

[0005] AGV navigation methods include electromagnetic navigation, tape navigation, laser navigation, visual navigation and infrared visual navigation, etc. Among them, infrared visual navigation is to arrange a passive Landmark infrared tag with ID above the AGV running path, and install an AGV on the AGV Infrared positioning module, after processing and analyzing the infrared image reflected by the label, obtains position and direction data, but using an infrared positioning module makes the AGV's positioning accuracy and system fault tolerance rate lower

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