RU2770031C1 - Method for monitoring the states of intermediate track circuits - Google Patents

Abstract

FIELD: electrical engineering.SUBSTANCE: invention relates to methods for monitoring the states of intermediate track circuits TC. In the method, monitoring is executed by tonal track circuits TTC, the threshold voltages for recording the state of the TC are adaptive. The release of the TC is recorded if the condition that the current voltage of the receiving end of the TC in the next control cycle is not different from the threshold voltage and the current voltage of the previous TC in the previous control cycle by more than 10% is satisfied. The threshold voltage is recorded if three adjacent TC are in the free state, said voltage is equal to the current voltage of the receiving end of the middle TC in the current control cycle.EFFECT: increase in the reliability and accuracy of monitoring the states of TC when the resistance of insulation of the TC is reduced.1 cl, 1 tbl, 1 dwg

Description

The field of technology to which the invention belongs

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

State of the art

A known method for monitoring the states of running rail circuits with electrical joints, which consists in the fact that a track signal frequency generator and a track receiver are connected to the rail line by means of communication lines, the generator and receiver are connected to different communication lines, moreover, the generator is connected for the control time and the flow time transient processes to the middle of the rail line limited by electrical joints at the ends, the receiver is connected for the time of monitoring the rail line, the connection time of the track devices is determined by the distributors installed at the EC post and linear installations, the synchronization of the distributors is carried out by a frame synchronization signal, to eliminate the influence of the inertia of the 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 antiphase with the voltage of the previous rail line. rail circuits with electrical joints Polevoy Yu.I. Published 04/04/2018. Bull. No. 10].

The disadvantage of this method is that the shunt sensitivity is reduced in the area of the electrical junction. There is a known method for regulating the movement of trains using radio communication devices, with the help of which they transmit from the post of electrical interlocking of the EC to the locomotive L information about the state of the running track circuits of the RC located in the control zone of the ZK, i.e. between the station and the middle of the haul, the numbers of the established UM routes and the predicted time of arrival/departure of the train;

the control of the states of the RL haul rail lines is carried out by the tonal track circuits of the SEC using a two-wire line for the generator end of the SEC LPG and the step-by-step operation of the LRS linear distributors, and the two-wire line of the receiving end of the LPP for transmitting information about the state of the RC to the posts of the EC of adjacent stations;

LP and LC lines are laid from the middle of the haul to the station, a PG tone track generator is connected to the LC at the EC post, and a PP tone track receiver is connected to the LC; under the influence of the station computer, the PG computer sends a series of pulses to the LP, between which there is an interval that performs the functions of the CS frame synchronization signal, the pulses are separated by boundaries, where the phase of the signal changes to the opposite;

on the borders of the RC, wayboxes PC are installed with equipment for the supply end PKg (generator) or the receiving end PKp, PKp and PKg are placed in a checkerboard pattern;

information is cyclically transmitted to the RP on the status of the RC by the LC, while the receiving end of the RC is connected to the PP by means of path transformers PT and LC, the signal amplitude indicates the state of the RL, which is compared with the threshold values for the occupation and release of the RC [Patent No. 2732 181 RF, Method regulation of train traffic Polevoy Yu.I. Published 14. 09. 2020. Bull. No. 26].

The disadvantage of this method is that, with a reduced insulation resistance of the RC, it cannot provide reliable monitoring of the states of the RC rail line.

This technical solution was chosen as a prototype.

Disclosure of invention

The technical result is the implementation of reliable monitoring of the states of the RC with a reduced insulation resistance of the RL by comparing the voltages of the receiving ends of several RCs, or one RC, measured at different points in time [Field Yu.I. Methods and devices for monitoring the location of an object in the rolling stock control system: dis. ... dokt. tech. Sciences / Yu.I. Field. - Samara: SamGUPS, 2013. - 454 p.].

The method for monitoring the states of the distillation rail circuits of the RC is carried out by the tonal rail circuits of the SEC using a two-wire line for the generator end of the LPG and step-by-step operation of the linear distributors of the LRS, and a two-wire line of the receiving end of the LPP for transmitting information about the state of the RC to the post of the ECA of the adjacent station; LPG and LPP lines are laid from the middle of the haul to the station, a PG track generator and a PP track receiver are connected to the linear points of the LT at the ECA post; at the borders of the DC, LTs are installed (way boxes of the PC with the equipment of the supply or receiving end); the LPP cyclically transmits information to the RP about the state of the RC, while the signal amplitude indicates the state of the RL, which is compared with the threshold voltage values, characterized in that the release of the RL is fixed provided that the current voltage of the receiving end of the RC does not differ from the voltage of the receiving end of the previous DC (in the direction of the train) by more than 10% from that measured in the previous control cycle, and also does not differ by more than 10% from the threshold voltage of the same DC found before it was occupied by a passing train (If BEGIN 0.9 • U _K-1 < U _k < 1.1 • U _k-1 AND 0.9 • UPA _k < U _K < 1.1 • UPA _k END THEN P _K =0), the threshold voltage is taken as the current value of the voltage of the receiving end of the RC at its free state and the free state of adjacent RCs (If BEGIN Ρ _K-1 =0 AND P _K =0 AND Ρ _K+1 =0 END THEN UP _k =U _k ).

Implementation of the invention

Brief description of the drawings

The drawing (figure 1) shows a block diagram of the connections post and distillation devices.

Conventions

Figure 1, in the text and in table 1 shows the following notation:

1 - post of electrical centralization of station A - ECA;

2 - PG track generator;

3 - inverter AND;

4 - breaker PR;

5 - track receiver PP;

6 - station computer EVMS;

7, 8, 9, 10 - linear points of LT;

11, 12, 13, 14 - intra-post connecting wires of the joint venture;

15, 16 - linear wires of the LPG generator end;

17, 18 - linear wires of the receiving end of the LPP;

19 - inside the post bus for transmitting information about the voltage of the receiving ends of the ShPI;

20, 21 - inside the guard wires for transmitting information PPI;

Ρ ₁ =0, R ₂ =0 ... - free state of the RC in the current control cycle;

R ₃ =1 ... - busy state of the RC in the current control cycle;

UA ₁ , UA ₂ , UA ₃ - voltage receiving ends of the RC in the previous control cycle;

UP ₁ , UP ₂ , UP ₃ … - RC threshold voltages in the current control cycle;

UPΑ ₁ , UPA ₂ , UPA ₃ ... - threshold voltages of the RC in the previous control cycle;

LPG - two-wire line of the generator end;

LPP - two-wire line of the receiving end;

LRS - linear distributor;

RL - rail line;

SEC - tonal rail circuit.

Description of the invention

The method for monitoring the states of the distillation rail circuits of the RC is carried out by the tonal rail circuits of the SEC using a two-wire line of the generator end of the LPG 15, 16 and step-by-step operation of the LRS linear distributors at the linear points LT 7, 8, 9 10, and a two-wire line of the receiving end of the LPP 17. 18 for transmission information about the state of the RC at the post of ECA 1 of the adjacent station; LPG lines 15, 16 and LPP 17, 18 are laid from the middle of the haul to the station.

To the linear points LT 7, 8, 9, 10 at the post ECA 1 connect the track generator PG 2 and the track receiver PP 5; at the borders of the distribution center, LT 7, 8. 9, 10 are installed (PC track boxes with equipment for the supply or receiving end). According to the LPP 17, 18, information is cyclically transmitted to the PP 6 about the state of the RC, while the signal amplitude indicates the state of the RL, which is compared with the threshold voltage value.

To indicate the boundaries of the pulses transmitted to the linear points LT 7, 8, 9, 19, an inverter AND 3 is used, which changes the phase of the signal by 180 °, and to create a frame synchronization signal (interval between orders), a signal interrupter PR 4 is provided. Using the station Computer EVMS 6, a telecontrol signal is generated and the telesignaling signal is decoded, by analogy with the way it is provided in the prototype.

To connect devices and devices, connecting wires and a bus 11, 12, 13, 14, 19, 20, 21 are used.

Unlike the prototype, the release of the RL is fixed provided that the current voltage of the receiving end of the RC does not differ from the voltage of the receiving end of the previous RC (in the direction of the train), by more than 10% from that measured in the previous control cycle, and also does not differ by more than by 10% of the threshold voltage of the same DC found before it was occupied by a passing train (If BEGIN 0.9 • U _k-1 < U _k < 1.1 • U _k-1 AND 0.9 • UPA _k < U _k < 1.1 • UPA _k END THEN P _K =0; in the transcription of the Delphi algorithmic language), the threshold voltage is taken as the current value of the voltage of the receiving end of the RC in its free state and the free state of adjacent RCs (If BEGIN Ρ _K-1 = 0 AND P _K =0 AND Ρ _K+1 =0 END THEN UP _K =U _K , in the transcription of the Delphi algorithmic language).

Table 1 shows the names of the variables for the program operation when determining the states of the RC and threshold voltages.

Claims (1)

The method for monitoring the states of the distillation rail circuits of the RC is carried out by the tonal rail circuits of the SEC using a two-wire line for the generator end of the LPG and step-by-step operation of the linear distributors of the LRS, and a two-wire line of the receiving end of the LPP for transmitting information about the state of the RC to the post of the ECA of the adjacent station; LPG and LPP lines are laid from the middle of the haul to the station, a PG track generator and a PP track receiver are connected to the linear points of the LT at the ECA post; on the borders of the RC, linear points of the LT are installed - PC wayboxes with the equipment of the supply or receiving end; the LPP cyclically transmits information to the RP about the state of the RC, while the signal amplitude indicates the state of the RL, which is compared with the threshold voltage values, characterized in that the release of the RL is fixed provided that the current voltage of the receiving end of the RC does not differ from the voltage of the receiving end of the previous RC, more than 10% from that measured in the previous control cycle, and also does not differ by more than 10% from the threshold voltage of the same RC, found before it was occupied by a passing train, the current value of the voltage of the receiving end of the RC at its the free state and the free state of adjacent RCs.

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