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A rapid construction method of digital twin model of workshop personnel

A construction method and volume model technology, applied in the field of production control, can solve problems such as the lack of systematicness of human digital twins

Active Publication Date: 2021-10-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, among the five elements of the workshop (man, machine, material, law and environment), domestic scholars have done a lot of research on the digital twins of workshop equipment (machines) and products (materials), but the digital twins of people are not systematic.

Method used

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  • A rapid construction method of digital twin model of workshop personnel
  • A rapid construction method of digital twin model of workshop personnel
  • A rapid construction method of digital twin model of workshop personnel

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Experimental program
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Embodiment Construction

[0023] A method for quickly constructing a workshop personnel digital twin model of the present invention comprises the following steps:

[0024] Step 1, build a visual sensor network composed of multiple cameras for all-round monitoring in the global scope of the workshop, which specifically includes the following steps:

[0025] Step 1.1: Investigate the optical parameters of industrial cameras from various manufacturers, such as focal length and viewing angle. Determine the appropriate camera model according to the actual area of ​​the workshop and the production environment, and determine a reasonable focal length;

[0026] Step 1.2, design the camera distribution and theoretical layout size diagram, arrange the cameras on the same side at equal intervals, and arrange the cameras on the opposite side side by side. The overlapping area between two adjacent cameras should be as small as possible. The installation height of the cameras needs to ensure that the monitoring area...

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Abstract

The invention provides a method for quickly constructing a digital twin model of workshop personnel, comprising the following steps: step 1, constructing a visual sensor network composed of multiple cameras for omnidirectional monitoring within the global scope of the workshop; Offline calibration, each camera captures video images synchronously in real time; Step 3, uses deep convolutional neural network to identify and detect people on the images; Step 4, merges image detection information from multiple cameras to eliminate personnel redundancy in overlapping areas; Step 5. Map the detection information of the personnel position in the image scene to the actual workshop site to obtain real-time personnel location information in the physical world; Step 6. Use the real-time personnel location information in the physical world as personnel twin data to construct a digital twin of personnel.

Description

technical field [0001] The invention relates to a production control technology, in particular to a method for quickly constructing a digital twin model of workshop personnel. Background technique [0002] Digital twin technology, as the core technology to realize the interactive fusion between the physical world of manufacturing and the information world, has become one of the most popular concepts recently. It ranks fifth among the top ten strategic technologies predicted by Gartner in 2017, which is another technology outlet besides artificial intelligence, machine learning, AR / VR, and blockchain. The digital twin dynamically presents the past and current behavior or process of a physical entity in a digital form. As a technology that makes full use of data, intelligence, and integrates multiple disciplines, digital twins provide more real-time, efficient, and intelligent services in the practice of intelligent manufacturing concepts and goals. [0003] The workshop is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G06T7/73
CPCG06T7/73G06T2207/30196G06T2207/20081G06T2207/20084G06T2207/10024G06T2207/10016G06V20/52G06F18/2413
Inventor 刘庭煜钟杰刘洋陆增
Owner NANJING UNIV OF SCI & TECH