Average Number of Orders Calculation Concerning Diagnostic Test of Measuring Controllers During Permanent Monitoring Performance Based on Stationary Model of Queueing System

Modern systems of technical diagnostic together with site monitoring of important technological processes are being arranged via embedded exterior measuring controllers, various networks of data transportation as well as by means of intellectual environment of diagnostic info and accumulated data presentation to end-user. One of the keystone problems reckoning health monitoring systems is steadiness plus function correctness of peripheral measurement controllers. Based on work experience the network of data transmission as well as peripheral units are the most sensible ones concerning reliability. On-line testing function being aimed at proper workability is essential during pauses per scanning of controller's sensors. By authors of present article the estimation method of average number of served orders of measuring controller's diagnostic test, including those flows in the form of attached measures features plus testing claims. Our authors offered the approach being completed in accordance with application of the theory of queuing and total claims were divided into two categories depending on priority, i.e. the initial is consisting of work signals from being diagnosed sites (high priority claims) and the second one - coded vectors of diagnostic test (low priority claims). Received from being monitored sites claims should be selected with priority as compared to testing loads. Based to the above, the absolute priority approach of average number of diagnostic claims definition was designed as well as the option of relative priority. The advantage of our option is the most effective time lags of testing signal presentation on controller sensors of the health mon-itoring system plus the time choice per testing operation of the developed method.