System for monitoring and accounting of automation and telemechanics appliances using nfc technology

This article is devoted to the development and validation of a system for monitoring and accounting of railway automation and telemetry equipment using NFC technology. The primary objective of the study is to develop technical systems for the maintenance, repair, and storage of a significant amount of equipment in repair and maintenance areas. To select the optimal technical solution, an analysis of existing technologies was conducted, including barcode, QR code, RFID, and NFC. NFC was chosen because it provides high security and data exchange speed, low power consumption, and resistance to external influences, which is critical for the integrity and reliability of accounting information. The research methodology included creating a conceptual warehouse model and using photographs of the equipment maintenance and repair process to formalize time costs. The analysis identified the most inefficient elements-the receiving (Och2) and shipping (Och4) processes, where manual documentation takes up to 20 minutes per device. The proposed system is a comprehensive solution comprising a central node (a phpMyAdmin database server), specialized information and algorithmic support for the warehouse management system, and NFC tags, which serve as a source of basic and reference information about the equipment. Implementation of the system includes the integration of reader devices and the scheduled application of tags directly to the railway automation equipment. The efficiency assessment was conducted through simulation modeling of the warehouse management system using an agent-based approach in the Anylogic platform. The simulation showed that implementing the system within a single RTU processing 3,020 devices per month will reduce the total annual labor costs at the "Och2" and "Och4" stages from 416 to 52 man-hours. The 364 man-hours saved facilitate the redistribution of the electricians' workload, increase overall labor productivity, and enhance the RTU's processing capacity.