On the issue of choosing a real-time operating system for hardware and software support of industrial and environmental monitoring systems

Abstract

The article discusses the features of the operation of environmental monitoring systems. A number of factors are determined that affect the organization of hardware and software support for such systems. The main factors are: the operation of the equipment in real time, various environmental influences, the specifics of the composition of sensors and connections, as well as a complex technology for servicing the equipment in an aggressive technological environment. The listed factors affect the structure, software, hardware components and design of environmental monitoring systems. When creating any complex systems, the distribution of work in time leads to the allocation of various design stages, and the ideas about the system being designed, reflecting its essential properties with varying degrees of detail, determine the constituent parts of the design process. The specificity of the stages for monitoring systems of thermal power plants is shown, determined both by the general features of these systems and by the peculiarities of their application in the technological processes of thermal power plants, among which the main ones are: the heterogeneity of the input units and devices, as well as technological objects of power plants; work in real time; programmable logic of smart sensors and multifunctional purpose of system components; the possibility of failures leading to a change in the functioning algorithm using the multiversion methodology; the presence of interrelated requirements for the accuracy and speed of information transfer. The work shows the content of work on the stages of designing monitoring systems, taking into account the specifics of their development. This specificity is most significantly manifested in the development of a technical proposal and a draft design. In a step-by-step design, after the end of each stage, an assessment of the main results obtained is carried out by comparing them with those required according to the terms of reference. The article presents an expert analysis that allows you to determine the acceptable implementation of a real-time operating system for hardware and software support for environmental monitoring technologies. Phar Lap ETS, VxWorks and NI Linux Real-Time operating systems are considered.