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

The present article is devoted to the issue of using an attribute model for assessing the dependa-bility of computer systems. The model was developed at the Institute of Mathematical Ma-chines and Systems Problems of the National Academy of Sciences of Ukraine and implement-ed in new buildings in Kyiv for building dispatching systems for elevators and other engineer-ing 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 au-tomated workplace of the dispatcher through existing local and global networks. The created hardware and software facilitate the incorporation of existing buildings into the dispatching sys-tem and contribute to a reduction in dispatching costs during the design of new residential com-plexes. The paper studies the fundamental requirements and principles underlying the construc-tion 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 sys-tems 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 (at-tributes). The dependability of the obtained reliability assessment is contingent upon the com-pleteness 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 oper-ating software on single-chip microcomputers without the use of an operating system have been identified in relation to the mentioned attributes and their metrics.