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Cyber physical system (CPS) has attracted much attention from industry, government and academia due to its dramatic impact on society, economy and people’s daily lives. Scholars have conducted a number of studies on CPS. However, despite of the dynamic nature of this research area, a systematic and extensive review of recent research on CPS is unavailable. Accordingly, this paper conducts an intensive literature review on CPS and presents an overview of existing research on CPS. The purpose of this paper is to identify the challenges of studying CPS as well as the directions for future studies on CPS.

This paper examines existing literatures about CPS from 2006 to 2018 in Compendex, presenting its definition, architectures, characteristics and applications.

This study finds that CPS is closely integrated, diversified and large-scale network with complex multiple time scales. It requires dynamic reorganization/reconfiguration, mass computing, and closed, automated and control circuits. Currently, CPS has been applied in smart manufacturing, medical systems, smart city and smart libraries. The main challenges in designing CPS are to develop, to modify, to integrate abstractions and to set predictable timing of openness and physical interconnection of physical devices. Furthermore, security is a key issue in CPS.

This study adds knowledge to the existing literature of CPS by answering what the current level of development on CPS is and what the potential future research directions of CPS are.

Public safety issues are highly concerned by the state and public. As an emerging network technology and industrial mode, Internet of Things (IoT) has great application prospect because of its architecture advantages and technical features, and has drawn wide attention from all walks of life. With the development of IoT, especially the putting forward of concept of public safety IoT, IoT has been a certain degree of application in the field of public safety. Because of that, public safety regulatory technology is improved. The paper aims to discuss this issue.

By summarizing scholars’ research results, this paper analyzes the application of IoT in public safety regulation, points out the challenges in application, and then puts forward some suggestions, pointing out IoT development prospects in the area of public safety regulation.

The application of IoT in the field of public safety from the perspective of IoT architecture and the perspective of the main technologies of IoT is paid attention. And this market that IoT added to other services in the public sector would generate $4.6 trillion of net profit globally in the next decade. Therefore, government leaders and public safety organizations should start exploring the full potential that IoT could offer to public safety.

The research will develop the theory of IOT, which is valuable to strengthen the IOT technology innovation and the application extension. The application of IOT in public safety will enhance the ability to supervise the public safety and guarantee the safe social condition for people’s life. So it is valuable in theory and in practice.