Development methodology of metrological support of maintenance by the technical state of communication means

Abstract

Peculiarities of metrological support for technical maintenance based on the condition of large-scale communication devices (tens and hundreds of thousands of elements) consisting of separate subsystems, whose functionality can be checked, maintenance and restoration of functionality can be performed autonomously, are considered. It is suggested to increase the efficiency of technical maintenance according to the condition to take into account the peculiarities of metrological support, to establish a rational sequence of operations, and to reasonably choose measuring equipment depending on the requirements. For this, the methodology uses a complex indicator that combines individual parameters of checks and the probability of their preferred choice. This makes it possible to assess the technical condition of the means of communication in a minimum time with a given probability. In addition, it is possible to quantitatively estimate the time of maintenance, taking into account metrological reliability and the probability of correct assessment of the result of checking parameters by means of measuring equipment. The procedure for using the obtained results is formalized and an example of implementation is given. For the first time, the results of the latest research in the field of technical and metrological support of means of communication during their technical operation are taken into account, namely, the possibility of erroneous assessment of the results of parameter checks, the possibility of failure of measuring equipment, which allows to significantly increase the probability of correct assessment of the technical condition of means of communication during their maintenance according to condition. In addition, taking into account modern achievements in technical diagnostics made it possible to quantitatively estimate the maximum value of the maintenance time based on the state of the means of communication and compare it with the acceptable value specified in the technical documentation. The functional dependencies of the proposed complex coefficient of the feasibility of each inspection, on the metrological reliability of the measuring equipment and the probability of erroneous decisions in the evaluation of the inspection values after measuring the relevant parameters, were obtained and investigated. The area of existence of solutions for calculating the complex coefficient from the quality of metrological support is defined. It is advisable to use the obtained results during the development of the technological process of maintenance of promising and existing means of communication, as well as when planning the activities of specialists during scheduled maintenance work on equipment at field and stationary communication nodes.