On the issue of the dependability of dispatch systems in the municipal sector

Abstract

The present article is devoted to the issue of using an attribute model for assessing the dependability of computer systems. The model was developed at the Institute of Mathematical Machines and Systems Problems of the National Academy of Sciences of Ukraine and implemented in new buildings in Kyiv for building dispatching systems for elevators and other engineering equipment in the municipal sector. The distinguishing characteristic of the developed tools is their focus on the interaction between individual elements of the system and the central automated workplace of the dispatcher through existing local and global networks. The created hardware and software facilitate the incorporation of existing buildings into the dispatching system and contribute to a reduction in dispatching costs during the design of new residential complexes. The paper studies the fundamental requirements and principles underlying the construction of a dispatching system. It delves into the challenges encountered and proposes strategies for enhancing the reliability of the dispatching system of utility engineering systems. Such systems are distinguished by a continuous cycle of operation and are defined as critical systems. The attribute model of computer systems dependability is a pivotal component of dependability assessment, enabling the determination of the necessity to employ specific characteristics (attributes). The dependability of the obtained reliability assessment is contingent upon the completeness and adequacy of the utilized system of characteristics. The following dependability attributes have been evaluated: availability, maintainability, compatibility, and their impact on the overall performance. The specifics of the widespread use of single-chip microcomputers in the construction of the system have been considered. The positive and negative impacts of operating software on single-chip microcomputers without the use of an operating system have been identified in relation to the mentioned attributes and their metrics.