Intelligent signal detectors with random moment of appearance in rail lines monitoring systems

Abstract

The article discusses the issues of building intelligent receivers of pulsed signals with an unknown arrival time without restrictions on the value of the signal-to-noise ratio under the influence of a complex of interfering factors. Using recurrent methods for detecting disturbances of random processes and an algorithm of cumulative sums, the problem of synthesizing algorithms for detecting Markov signals with random moments of appearance against the background of various combinations of destabilizing factors acting in control systems for the states of rail lines in normal and shunt operating modes is solved. To assess the efficiency of detecting a random signal by the method of cumulative sums, statistical modeling of the specified algorithm was carried out.

Microelectronic device for determining telecontrol signal pulse quality

“…The purpose of this article is to solve innovative problems on the application of contactless devices in the existing relay system of block route centralisation, which will provide an increase in traffic safety by increasing the reliability, technical condition of devices, control. To achieve this goal the methods of refusal from hardware realisation of logic functions and transition to software solution of these dependencies, and also refusal from mechanical contacts and transition to microelectronic contactless switching devices were used [1,5,6,8,9,10,13].…”

“…This paper considers one of the methods of modelling the operation of the node, the linear point, designed for demodulation of the telecontrol signal [6,7,9,11,12]. The solution to this problem is based on the use of Petri net theory, which is a very convenient tool for modelling [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. The linear point device has output values described by three bits of information and accepts one of three states 001, 010, 100.…”

“…In spite of small dimensions, these microcontrollers have good enough software, besides, there are some developments in this matter and experience in realisation of functional possibilities of relay circuits, microelectronic microcontrollers. [1,2,[4][5][6][7][8][9][10][11][12][13][14][15][16].…”

The operation model of the point setting relay for a microelectronic device

“…The contemporary landscape of railway automation and telemechanics systems is characterized by the pervasive integration of microelectronics [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The reasons for this trend lie in the curtailment of power-consuming electromechanical relays within railway automation and telemechanics, constituting a predominant 95% of the extant station and section infrastructure of JSC OTY railways.…”