RU2684162C1 - Method of controlling stains of rail track circuits with electrical joints - Google Patents

Abstract

FIELD: railway automatics.SUBSTANCE: invention relates to the field of railway automation for control of conditions of running-up track circuits with electric joints. In the method, a track frequency signal generator and a track receiver are connected to the track by means of communication lines, the generator and the receiver are connected to different communication lines, wherein the generator is connected for the control period and transient processes time to the track line center limited by the electric joints at the ends, receiver is connected for the track line monitoring time, time of the track devices connection determining by the distributors installed on the EC station and the linear installations, the distributors synchronization is carried out by the frame synchronization signal, to exclude the effect of inertia of oscillatory circuits of the track receiver and electrical joints, each subsequent connection of the receiver is carried out so that the signal arrives at the input of the receiver in counter phase with the voltage of the previous track.EFFECT: higher reliability of control of rail track circuits with electric joints.1 cl, 6 dwg

Description

FIELD OF THE INVENTION

The invention relates to the field of railway automation and can be used to regulate the movement of trains on the stage.

State of the art

A known method of monitoring the state of the rail circuits of the stage by alternately connecting each rail line to the track generator located at the departure station, and to the track receiver located at the receiving station [Field Yu.I., Fedorov N.E. Methods for monitoring the state of railway track sections. Samara 2006. SamGAPS, 72 pp.], [Field Yu.I. Improving methods for monitoring the state of railway track sections. Samara 2009. SamGUPS, 134 pp.], [Patent No. 2296688 of the Russian Federation, Rail chain, Field Yu.I. and other publ. 10.04.2007. Bull. No. 10].

The disadvantage of this method is that to select a rail circuit requires frequency channels using generators, receivers and filters, which significantly reduces the reliability of its action.

A known method of monitoring the state of the rail circuits of the haul by alternately connecting each rail line to the track generator located at the departure station and the track receiver located at the receiving station [Patent No. 2291815 of the Russian Federation, Method for connecting devices to the rail circuit, Field Yu.I. and other publ. 20. 01. 2007. Bull. No. 2].

The disadvantage of this method is that to select a rail circuit requires either frequency compaction of the communication line, or separate physical circuits, which is possible using generators, filters and receivers, or with laying a multicore cable, which significantly reduces the reliability of the devices, and also increases capital and operating costs.

This technical solution is selected as a prototype.

Disclosure of invention

The technical result is to increase the reliability of the control and operation of the distillation rail circuits with electrical joints, as well as reducing capital and operating costs.

The technical result is achieved by the fact that the method of monitoring the status of the rail-rail circuits with electrical joints, which consists in connecting a signal-frequency track generator and a track receiver via communication lines, a generator and a receiver connecting to different communication lines, the generator being connected to the monitoring time and the transit time to the middle of the rail line bounded by electrical joints at the ends, the receiver is connected for the time of monitoring the rail line, switching devices are determined by the distributors installed at the EC station and linear units, the synchronization of the distributors is carried out by a cyclic synchronization signal, to eliminate the influence of the inertia of the oscillating circuits of the track receiver and electrical joints, each subsequent connection of the receiver is carried out so that the signal is fed to the input of the receiver in antiphase with voltage previous rail line.

Brief Description of the Drawings

In FIG. 1 shows a diagram of connecting track devices to rail lines with electrical joints, FIG. 2 is a timing diagram with transients powered by adjacent rail lines with a forward phase current and forward and reverse phase currents, FIG. 3 - the plan of the haul with the indication of the inter-rail jumpers and the numbers of the intervals for connecting the put generator and the track receiver, in FIG. 4 is a structural diagram of the control of rail lines.

The implementation of the invention

In FIG. 1, 2, 3 and 4 the following notation is given:

1, 2, 3, 4, 5, 6 - rail lines respectively RL1, RL2, RL3, RL4, RL5, RL6;

7, 8, 9, 10, 11, 12 - capacitors of electrical joints;

13, 14, 15 - inter-rail jumpers MP;

16, 17, 18, 19, 20, 21 - devices of the feeding ends (key and track transformer) PPP;

22, 23 - devices receiving ends (key and track transformer) PPi;

24, 25, 26 - track devices for monitoring rail lines RL1 and RL2 - PP 1-2, RL3 and RL4 - PP 3-4, RL5 and RL6 PP 5-6, respectively;

27, 28 - track devices for supplying, respectively, the rail lines RL2 and RL3 - PP 2-3, RL4 and RL5 - PP 4-5;

29, 30, 31 - beats of the leading edges of the pulses (PF);

32, 33.34, 35.36 - cycles of the steady-state process in pulses (UP);

37, 38 — beat of the trailing edges in pulses (ZF);

39, 40, 41 - cycles of transient processes in pulses (PP);

42 - post EC Article. BUT;

43 - computers;

44 - power supply SP (signal frequency generator);

45 - track receiver PP;

46 - key (for switching the circuit);

47 - IP communication line for supplying rail circuits and microelectronic devices (for connecting a power source);

48 - PP communication line for monitoring rail circuits (for connecting a track receiver);

49 - a linear installation for monitoring rail lines RL1 and RL2 - LU1-2;

50 - control device for selecting the time interval for connecting devices of rail circuits (contains a Schmidt trigger ТШ, a frequency divider, an MF counter up to 32 units);

51 - resistor R1;

52 - resistor R2;

53 - linear transformer with rectifier LTV;

54, 55 - keys KL1 and KL2;

56 - the driver of the signal of cyclic synchronization generates a pulse at the beginning of the interval in the line of IP;

57 - diode VD;

58, 59 - track transformers TP;

60 - capacitor - energy storage eliminates the loss of power chips in the interval in the line of IP;

61 - line broadcast clock pulses - T;

62 - line broadcast signal to the reset - RL;

63 - line broadcast broadcast control RL1 on the fourth step;

64 is a broadcast line for enabling control of the RL2 at a sixth clock cycle;

65, 66 - power poles M, P for microcircuits;

67 - linear installation for monitoring rail lines RL2 and RL3 - LU 2-3;

68 is a control device for selecting a time interval for connecting devices of rail circuits (contains a Schmidt trigger ТШ, a frequency divider, an MF counter of up to 32 units);

69 - logical element OR;

70 - resistor R3;

71 - linear transformer with rectifier LTV;

72 - keys KL;

73 - the driver of the cyclic synchronization signal Ф generates a pulse at the beginning of the interval in the IP line;

74 - track transformer TP;

75 - diode VD;

76 - capacitor - energy storage eliminates the loss of power supply of microcircuits in the interval in the line of IP;

77 - transmission line of clock pulses - T;

78 - line broadcast signal to the reset - RL;

79 - line broadcast power supply RL (RL2 and RL3) on the fifth, sixth, seventh and eighth clocks;

80, 81 - power supply poles M, P for microcircuits;

82 - linear installation for monitoring rail lines RL3 and RL4 - LU 3-4;

83 — SU control device for selecting a time interval for connecting rail circuit devices (contains a Schmidt trigger ТШ, a frequency divider, an MF counter of up to 32 units);

84 - resistor R4;

85 - resistor R5;

86 - linear transformer with rectifier LTV;

87, 88 - keys KL1 and KL2;

89 - the shaper of the signal of cyclic synchronization f generates a pulse at the beginning of the interval in the line IP;

90 - diode VD;

91, 92 - track transformers TP;

93 - capacitor - energy storage eliminates the loss of power chips in the interval in the line of IP;

94 - line broadcast of clock pulses - T;

95 - line broadcast signal to the reset - RL;

96 - broadcast line of the inclusion of control RL3 on the eighth beat;

97 - transmission line of the inclusion of control RL4 on the tenth step;

98, 99 - M, P power poles for microcircuits.

The action of the method is as follows. The whole stage is divided into track sections of PU 1.5-2.5 km long, which are delimited by electrical joints of ES. These ES are parallel oscillatory circuits, consisting of segments of rails connected by rail links, and capacitors. Power supply of the RL rail lines (one PU contains two RL) is carried out from the middle, and the track receivers are connected at the ends. One half of the stage adjacent to the station provides one power supply for the transmitter and one track receiver PP, which are connected in turn to the radar. Such a connection allows you to monitor the status of all radar with the participation of one switchgear, one switchgear and two pairs of wires - line switchgear and switchgear (line designation corresponds to the designation of devices connected to them). Alternating connection of SP and PP to the radar is carried out using distributors installed on each linear installation of the LU. The function of the distributor at the EC post, among other functions, is performed by the computer. The synchronization of the LU distributors is carried out by the signal of the cyclic synchronization of the CA, which is initiated by the computer. The signal of the CA is a short interval, which is formed in the line of IP. The connection of the PP receivers to the radar is made so that the adjacent radar control signals arriving at the receiver input are out of phase, this reduces the duration of the transient process. With a haul length of 30 km at adjacent stations, 15 km of track adjacent to each neck are monitored. At a frequency of 400-700 Hz, the monitoring time of one radar does not exceed 0.05 s, and the duration of the monitoring cycle is one second. The transmission of the analog signal from each radar to the EC station allows you to implement any algorithm for monitoring the state of the rail line. With the participation of a computer, the state of the radar can be controlled by comparing the magnitude of the current signal with a fixed threshold value, a floating threshold value (relative control principle), comparing the magnitude of the current signal of one radar with the same value as another radar (other radar).

In FIG. 1 shows the connection of track instruments to the radar. On the track plan are marked the rail lines РЛ1, РЛ2, РЛ3, РЛ4, РЛ5, РЛ6 respectively 1, 2, 3, 4, 5, 6. Rail lines 2 and 3, 4 and 5 represent two rail chains of the RC, which are separated from each other and from other rail circuits with double parallel circuits, which represent the electrical joints. Each of the circuits includes capacitors 7, 8, 9, 10, 11, 12; inter-rail jumpers 13, 14, 15 and segments of rails from the jumpers to the connection points of the capacitors. Track devices of receiving ends ППп (track transformer and key) are enclosed in blocks 16, 17, 18, 19, 20, 21. Way devices of supply ends ППи (track transformer and key) are enclosed in blocks 22, 23. All track devices located in linear units, combined in blocks PP 1-2, PP 3-4, PP 5-6, PP 2-3, PP 4-5, respectively, paragraphs 24, 25, 26, 27, 28. In the oscillating circuits at the signal frequency, resonance occurs current. Radar states 1, 2, 3, 4, 5, 6 are monitored alternately, and the track devices 16 and 17, 18 and 19, 20 and 21 are turned on so that the signal currents of the receiving ends flow counterclockwise, which eliminates the dangerous influence of the inertia of the PP track filter (Fig. 4) for the operation of the RC monitoring circuit. In addition, such inclusion of the receiving ends (Fig. 1) reduces the time of transient processes in the oscillatory circuits, which increases the speed of determining the state of the radar of the entire stage.

In FIG. 2 is a timing diagram of the generating voltages U at the receiver input versus time t. The voltage at the output of the power source is shown. Six impulses are presented: 1IMP, 2IMP, 3IMP, 4IMP, 5IMP, 6IMP (black rectangles), the duration of which corresponds to ticks 29 and 32, 30 and 33, 31 and 34, 39 and 35, 40 and 36, 41. At the receiver input, the pulse 1IMP is represented by the leading edge of PF - 29, the steady pulse (steady state process) UP - 32, and the trailing edge of the ZF - 37. The 2IMP pulse is displayed in the same way (bars 30, 33, 38). The phases of 1IMP and 2IMP pulses, as well as 2IMP and 3IMP pulses are the same. The phases of pulses 3IMP and 4IMP, 4IMP and 5IMP, 5IMP and 6IMP are opposite. Beats 31 and 34 of the 3IMP pulse correspond to clock cycles 29 and 32 of the 1IMP pulse, clock cycles 30 and 33 of the 2IMP pulse. The beats 35 and 36 of the 4IMP and 5IMP pulses correspond to beats 32, 33.34. Beats 39, 40, 41 correspond to transient processes between the pulses between 3IMP, 4IMP, 5IMP pulses. Due to the phase change in the 3IMP, 4IMP, 5IMP, 6IMP pulses, the intervals 39, 40, 41 of the transient processes of the PP are two times shorter than between the 1IMP and 2IMP pulses (37 and 30), and between the 2IMP and 3IMP pulses (38 and 31). Such a phase change allows you to reduce by a third the time control of track sections.

In FIG. Figure 3 shows the trip plan and clock numbers of the receiver and power supply. To rail lines 1, 2, 3, 4, 5, 6, the receiver is alternately connected at clock cycles 4, 6, 8, 10, 12, 14. To rail lines 2 and 3, 4 and 5, the power source are alternately connected at clock cycles 5, 6, 7, 8 and 9, 10, 11, 12.

In FIG. 4, N is a structural diagram of the monitoring of rail lines, where the devices of the EC 42 station, the linear installation LU 1-2 49, the line from the IP 47 power supply, the line to the PP 48 track receiver are shown. The EC 42 provides the following: a computer 43 IP power supply 44, track receiver PP 45 and key KL 46. Computer 43 includes a power source 44 at the time of monitoring all the rail lines adjacent to the neck of the station half of the stretch. A power source 44 through a communication line 47 provides alternate power to all rail circuits and provides continuous power to microelectronic circuits of linear units of half of the stage. Then, the power supply 44 is turned off and an interval is created in the power supply, which is perceived by linear settings as a signal of the cyclic synchronization of the CA. Through the PP 48 line, analog signals from the receiving ends of all rail lines 1, 2, 3, 4, etc., are alternately transmitted to the EC terminal 42. The signals from line 48 through the key 46 are fed to the input of the receiver 45. The key 46 connects the line 48 to the receiver 45 only for the duration of the steady-state process, i.e. in intervals 4, 6, 8, 10, etc. The key 46 is controlled by the computer 43 due to the communication of the computer (output 3) - CL (input 5). The PP 45 receiver contains a PF bandpass filter (a set of circuits), a US amplifier, and an analog-to-digital converter. Information from the output 3 of the receiver PP 45 is transmitted to the input 2 of the computer 43 in digital form. The computer program allows you to monitor the state of the rail lines by comparing the current signal value with a constant threshold value, a floating threshold value (relative rail circuit), with the current values of other rail lines (relative rail circuit). The choice of control method depends on the parameters of the rail lines (length, signal frequency / range of insulation resistance fluctuations).

Power supply of microelectronic devices MEP of linear units 49 LU 1-2, 67 LU 2-3, 82 LU 3-4 is carried out through line 47 of the IP. The MEP devices of the linear installation 49 LU 1-2 receive power from the poles of 65 M and 66 P, To prevent a power outage in these poles at the time of the CA signal, a storage capacitor 60 C and a diode 57 VD are provided, At the beginning of the passage of the CA signal along the output pulse cut 4 blocks of a linear transformer and a rectifier 53 LTV, the shaper 56 Ф at the output 2 (on line 62 RL) generates a reset pulse of the devices of the calculating device 50 SU, which, through input 1, resets the frequency divider DC 16 (divides by 16) and the middle frequency counter 32 (counts to 32). From output 3 of the LTV 53 unit, along the 61 T line, input 1 of the calculating device 50 SU receives sinusoidal pulses of negative polarity of alternating current (half-wave rectification). The Schmidt trigger TS converts sinusoidal pulses into direct current pulses, which are divided by the frequency divider PM 16, and the mid-frequency counter 32 counts 32 clock cycles. At the outputs of the counter 4 and 6, increased potentials appear, which transmit along lines 63 LR1 and 64 LR2 to the inputs 5, respectively, of key 54 KL1 and key 55 KL2. The input terminals 1 and 2 of the block 53 LTV are connected to line 47 IP. To the PP 48 line through the resistors 51 R1 and 52 R2, the inputs (terminals 1 and 2) of the key 54 KL1 and 55 KL2, respectively, are connected. The outputs (terminals 3 and 4) of these keys through transformers 58 TP and 59 TP are connected respectively to rail lines 1 RL1 and 2 RL2. The presented description relates to linear units with receiving ends of rail lines (49 LU 1-2 and 82 LU 3-4 (Fig. 4, N, O)).

In FIG. 4, P shows a structural diagram of a linear installation 67 LU 2-3, with the participation of which the power supply of rail lines 2 RL2 and 3 RL3 and MEP devices is provided. To the border of the rail lines 2 RL2 and 3 RL3 through a transformer 74 TP, a switch 72 KL and a resistor 70 R3 connected line 47 IP. A capacitor 76 C is connected to the same line through the LTV block 71 and the 75 VD diode, the terminals of which are 80 M and 81 P poles. The output 1 of the 71 LTV block is connected to input 1 of the driver 73 Ф, output 2 of which is connected to the input via wire 78 RL 1 calculating device 68 SU. The output 3 of the LTV unit with a wire 77 T is connected to the input 2 of the calculating device 68. The operation of the units and elements 71 of the LTV, 73 Ф, 75 VD, 76 С is similar to the operation of the same units and elements of a linear installation (Fig. 4, N) 49 LU 1-2 - 53 LTV, 56 F, 57 VD, 60 C. The difference is that four outputs of the device 68 SU - 5, 6, 7, 8 are used instead of one (Fig. 4, N). The outputs of the device 68 SU (Fig. 4, P) is connected to a logic circuit 69 OR, the output of which 79 RL is connected to the input (terminal 5) of the key 72, which allows power supply of rail circuits 2 RL2 and 3 RL3 for 5, 6, 7 and 8 measures.

Figure 4, O presents a structural diagram of a linear installation 82 LU 3-4. Blocks and elements of this circuit 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93 perform the same functions as the same blocks and elements, respectively, 50, 51, 52, 53, 54, 55, 56 , 57, 58, 59, 60 (Fig. 4, H). The difference is that at the outputs 8 and 10 of the calculating device 83 of the control system, potentials of a logical unit appear at 8 and 10 clock cycles. Thanks to this, with the participation of wires 96 LR3 and 97 LR4, the keys KL1 87 and KL2 88 are opened at 8 and 10 cycles.

Claims (1)

A method for monitoring the conditions of rail-rail circuits with electrical joints, which consists in connecting a track signal generator and a track receiver to the rail via communication lines, characterized in that said generator and receiver are connected to different communication lines, said generator being temporarily connected monitoring and the duration of transients to the middle of the rail line, limited by electrical joints at the ends, the specified receiver is connected for the time of monitoring the rail line, in The connecting devices for the track devices are determined by the distributors installed at the electric centralization station and linear installations, the synchronization of the distributors is carried out by a cyclic synchronization signal, to eliminate the influence of the inertia of the oscillating circuits of the track receiver and electrical joints, each subsequent connection of the receiver is carried out so that the signal is fed to the input of the receiver voltage of the previous rail line.

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