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Review
. 2022 Jun 3;22(11):4276.
doi: 10.3390/s22114276.

Exploring the Application Sphere of the Internet of Things in Industry 4.0: A Review, Bibliometric and Content Analysis

Raman Kumar  1 , Sita Rani  2 , Mohammed Al Awadh  3
Affiliations
Review

Exploring the Application Sphere of the Internet of Things in Industry 4.0: A Review, Bibliometric and Content Analysis

Raman Kumar et al. Sensors (Basel). .

Abstract

This paper aims to comprehensively review 891 documents in the Scopus database about Internet of Things (IoT) in Ind 4.0 to understand the historical growth, current state, and potential expansion trend. From 2014 to 2020, a systematic methodology gathered information on IoT in Ind 4.0 documents in various Scopus databases. The relevant IoT research in Ind 4.0 documents is provided, and their types, publications, citations, and predictions are discussed. The VOSviewer 1.16.6 and Biblioshiny 2.0 applications display IoT status in Ind 4.0 publications for visualization research. The citation review aims to find the most prominent and influential authors, sources, papers, countries, and organizations. For citation analysis and ranking, document selection criteria were well defined. The author keywords, index keywords, and text data content analysis were used to identify the hotspots and development trends. The yearly IoT in Ind 4.0 article publications presented a speedily increasing trend, and a curve was fitted employing an exponential function. The paper "Intelligent manufacturing in the context of Industry 4.0: a review" was rated first with 754 citations. With 1629 citations, the "International Journal of Production Research" was ranked #1 along with Wan J. The South China University of Technology in Guangzhou, China, was placed first along with the United States as the most prolific and influential country. 'Industry 4.0' appeared the first time in 2014 with an application of IoT in Ind 4.0 with an overall appearance of 528, followed by the 'internet of things' in 2015, three times with a total count of 220 up to 2020. The IoT in Ind 4.0 assessment and bibliometric analysis intended to provide intellectuals a broad perspective working in IoT in Ind 4.0. Scholars should understand the hotspots in this area as soon as possible. This is also the first paper to thoroughly use bibliometric research to examine the IoT in Ind 4.0 literature. It will assist researchers of IoT in Ind 4.0 in expanding their knowledge and quickly comprehending the development status and pattern.

Keywords: Biblioshiny; Industry 4.0; Internet of Things; VOSviewer; bibliometric analysis; content analysis; review.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
(a) Essential application area of IoT, (b) Industry 4.0: convergence of technologies and industrial processes.
Figure 2
Figure 2
Vital Indication of IoT in Ind 4.0.
Figure 3
Figure 3
IoT in Ind 4.0 articles and prediction.
Figure 4
Figure 4
Distribution of mean citations of documents annually.
Figure 5
Figure 5
Article on IoT in the Ind 4.0 network.
Figure 6
Figure 6
Journal overlay visualization based on 20 citations and two articles.
Figure 7
Figure 7
Top ten source dynamics.
Figure 8
Figure 8
Author network of IoT in industry 4.0.
Figure 9
Figure 9
Topmost author citations and publication status by year.
Figure 10
Figure 10
Lotka function representation.
Figure 11
Figure 11
Nations: density visualization.
Figure 12
Figure 12
Author–keyword network visualization.
Figure 13
Figure 13
Word cloud of top-30 author keywords.
Figure 14
Figure 14
IoT in Ind 4.0 (15 index keyword co-occurrences).
Figure 15
Figure 15
Word cloud of keyword-plus.
Figure 16
Figure 16
IoT in Ind 4.0: Visualization of 104 text terms.
Figure 17
Figure 17
Tree plot of the top 30 title words.
Figure 18
Figure 18
Tree plot of the top 30 abstract words.
Figure 19
Figure 19
Three field plot author keyword (left), author (middle), and source (right).
Figure 20
Figure 20
Three field plot keywords plus (left), author (middle), and source (right).
Figure 21
Figure 21
Three-field plot of country (left), author (middle), and source (right).
Figure 22
Figure 22
Latest trends based on index keywords in IoT in Ind 4.0 research.
Figure 23
Figure 23
The latest trends are based on author keywords.
See this image and copyright information in PMC

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