A Cyber-Physical Systems Oriented Platform Using Web Services

Abstract

Cyber-Physical Systems (CPS) are obtained by integrating computation, networking, and physical processes. In many applications, within a CPS, mobile and wireless networks are used to realize the data transmission, conforming to the concept of Internet of Things (IoT). This facilitates interactions with several types of devices like sensors, RFID readers, mobile phones etc. Besides, Smartphones include important sensors as GPS, accelerometers, light sensors, phone camera etc. Based on such a foundation, different electronic services can be developed and provided for various types of clients. New research directions revealed the necessity to consider middleware architectures in CPS design. In this direction, Service Oriented Architectures (SOA) represents a paradigm that can be very efficient in designing specific layers of CPS. Web services are examples of SOA implementation, adequate for the requirements of the business environments. This paper presents a Cyber Physical Systems oriented e-business platform using Web services, which can be accessed through mobile and wireless networks, using Android OS Smartphones. A stock market exchange service was considered, as a relevant example of e-business. The time response of the SOAP and REST based Web service was evaluated, on LTE 4G and IEEE 802.11n channels, to determine which protocol is more efficient to increase the real time response capacity of the CPS oriented platform.