Abstract
The paper studies the issues of distributed sensor networks interaction based on the Internet of Things architecture in the context of automated control systems design for dynamic objects of transport infrastructure. The properties of multimedia streams like digital telemetry exchange and packet data delivery between the sensor controllers of urban transport network are analyzed. A method of modifying the standard Ethernet network interface at the logical link control (LLC) sublayer on Raw Socket technology for joint transmission of multi-channel telemetry and packet data is proposed. A software simulator has been developed for conveyor-modular transfer in Python codes for Linux Ubuntu operating system based on the dynamic data structuring by the markup tags. The relevance of this work is due to the need to further improve the open system interoperability when building heterogeneous Internet of Things. As a result of the studies conducted, the use of conveyor-modular transfer (CMT) for telemetry data exchange with limited latency in urban control systems of transport safety is substantiated. The tests of the conveyor-modular simulator confirmed the relevance and logical consistency of the basic principles of encoding, transmitting and decoding multimedia data in the communication channel of the Internet of Things. The obtained results create scientific and methodological prerequisites for replenishing the existing TCP/IP stack with a new internetworking protocol with limiting delays, which can be used in conjunction with the IP protocol in real-time applications of the Internet of Things, and above all, in urban transport safety management systems
Highlights
With the increase in the number of terminal devices, the worldwide Internet is gradually migrating towards the “Internet of Things” (IoT)
Both traditional clients and servers and automated control systems (ACS) of various sensor objects in transport, energy, and other industries, are integrated in a common network infrastructure [1, 2]
Popov ONAT (Ukraine), the new concept of packet networks interoperability is developed, [26,27,28,29,30]. This concept provides for the adaptation of basic data link layer technologies and the TCP/IP stack expansion to design IoT sensor network segments
Summary
With the increase in the number of terminal devices, the worldwide Internet is gradually migrating towards the “Internet of Things” (IoT). Special hardware and software tools have been actively developed to build sensor networks [6, 7] Many developments of this type exhibited as proprietary commercial products; a large variety of methods, tools and protocols emerged, as well as difficulties in standardizing these products raised. In this regard, the current direction in the field of telecommunications is to further increase the interoperability of heterogeneous sensor networks while their aggregation into the infrastructure of the Internet of things
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