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Indoor positioning navigation system and navigation method for unmanned forklift

An unmanned forklift and indoor positioning technology, applied in the field of forklift navigation, can solve problems such as affecting the accuracy and stability of laser navigation, difficult to meet the requirements of precise operation for positioning and navigation accuracy, affecting the work efficiency and stability of unmanned forklifts, etc. Achieve the effect of eliminating accumulated errors, improving reliability and achieving precise positioning

Active Publication Date: 2019-02-12
AEROSPACE INFORMATION
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Problems solved by technology

However, laser navigation technology has strict requirements on the environment. External light, ground requirements, visibility, brightness, etc. will affect the accuracy and stability of laser navigation. It is also difficult for positioning and navigation accuracy to meet the requirements of precise operation. Efficiency and stability of forklifts

Method used

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  • Indoor positioning navigation system and navigation method for unmanned forklift
  • Indoor positioning navigation system and navigation method for unmanned forklift

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Embodiment

[0048] figure 1 A structural block diagram of an indoor positioning and navigation system for an unmanned forklift according to an embodiment of the present invention is shown. figure 2 A working principle diagram of an indoor positioning and navigation system for an unmanned forklift according to an embodiment of the present invention is shown.

[0049] combine figure 1 , figure 2 As shown, the indoor positioning and navigation system for unmanned forklifts includes: sensor module 202, sensor module 202 is arranged on the forklift, includes UWB positioning tag 222, image acquisition module 224, UWB positioning tag 222 is used to transmit pulse signals, image acquisition module 224 Used to collect real-time images; multiple UWB positioning base stations 204, UWB positioning base stations 204 are set at the edge of the indoor area, and UWB positioning base stations 204 communicate with UWB positioning tags 222 for receiving pulse signals from UWB positioning tags 222; marke...

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Abstract

The invention discloses an indoor positioning navigation system and navigation method for an unmanned forklift. The system comprises a sensor module, multiple UWB (Ultra-wide Bandwidth) positioning base stations, a marker and a server, wherein the sensor module comprises a UWB positioning label and an image collection module; the UWB positioning label transmits a pulse signal; the image collectionmodule collects a real-time image; the multiple UWB positioning base stations communicate with the UWB positioning label and receives a pulse signal of the UWB positioning label; the marker is laid on a designated position of an indoor ground; the server is in communication connection with the image collection module and the UWB positioning base stations; positioning information is obtained by use of data of the UWB positioning base stations; and positioning adjustment data are obtained by use of the position information of the marker. A UWB positioning navigation technology is adopted by theindoor positioning navigation system for the unmanned forklift disclosed by the invention so that the working environment of the unmanned forklift is not influenced by illumination and brightness, and he signal strength is high, and navigation positioning precision is provided; by laying the marker on the ground, UWB positioning accumulative errors are corrected in time and eliminated to implement accurate positioning.

Description

technical field [0001] The invention belongs to the technical field of forklift navigation, and more specifically relates to an indoor positioning and navigation system and a navigation method for an unmanned forklift. Background technique [0002] Forklifts are industrial handling vehicles, which are used for loading and unloading, stacking and short-distance transportation of palletized goods. They are often used for the transportation of large objects in storage, and are widely used in cargo handling and loading and unloading in cabins, carriages, and warehouses. It can be seen that the indoor environment is one of the main working scenarios of forklifts. In recent years, intelligent unmanned forklifts have been widely used in indoor environments. Accurate positioning and navigation of forklifts is the basis and crucial to ensure unmanned and intelligent indoor forklift operations. However, in the indoor environment, the current positioning accuracy of unmanned forklifts...

Claims

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Application Information

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IPC IPC(8): G01C21/20
CPCG01C21/206Y02T90/16
Inventor 李素莹邓海刘丹郭培莹关大英
Owner AEROSPACE INFORMATION
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