To reveal the origin of the IoT, evaluate its mainstream research topics, and discuss the challenges facing the IoT in the future, this paper conducts a bibliometric study of the IoT from 2000 to 2019. First, this paper presents a basic bibliometric overview of the IoT. Second, co-citation, coupling and cluster analysis methods are used to analyse collaboration networks, and VOSviewer is used to visualize the networks. Third, biblioshiny is used to analyse the thematic trends of IoT. Finally, this paper discusses IoT challenges and provides some suggestions to address them. The limitations of this paper are also summarized. Research results show that, the mainstream studies in this field mainly focus on IoT security, wireless sensor networks, IoT management, IoT challenges and privacy. In addition, the thematic evolution of keywords shows that security and algorithm issues have become basic themes in the field of IoT research in recent years.

为了揭示物联网的起源，评估其主流研究主题并讨论物联网未来的挑战，本文对2000年至2019年的物联网进行了文献计量研究。首先，本文对物联网进行了基本的文献计量概述。物联网 其次，使用共引，耦合和聚类分析方法分析协作网络，并使用VOSviewer可视化网络。第三，biblioshiny用于分析物联网的主题趋势。最后，本文讨论了物联网挑战，并提出了一些解决方案。还总结了本文的局限性。研究结果表明，该领域的主流研究主要集中在物联网安全，无线传感器网络，物联网管理，物联网挑战和隐私。此外，