RU2446072C1 - Signal generator of frequency supervisory control system - Google Patents

Abstract

FIELD: radio engineering.

SUBSTANCE: invention refers to equipment of frequency supervisory control system of railway automation and remote control devices. Signal generator includes interface module with controlled devices, adjustment module of check codes, adjustment module of carrier frequency, indication unit, filtration unit of parasite harmonics, generator of check codes, code selection diagram, carrier frequency generator, signal amplifier and protection and matching unit with communication line.

EFFECT: signal generator is intended to provide operation of frequency supervisory control system with maintenance of existing information transfer principles, which makes gradual change-over to new equipment possible during the day-to-day operation of frequency supervisory control system.

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Description

The invention relates to equipment for a frequency dispatch control system for railway automation and telemechanics devices.

A device of a frequency dispatch control system, called a tuning fork generator GK6, is transmitted from a stage to a station to transmit information about the state of the equipment of the automatic signaling signaling point and moving automation devices. The transmitted information is presented in the form of a carrier frequency signal manipulated by a control code. This device consists of a code selection scheme, a carrier frequency generator, a signal amplifier and a protection unit and coordination with a communication line (Soroko V.I., Rosenberg E.N. “Railway automation and telemechanics equipment”: Reference: in 2 books. 2. - 3rd ed. - M.: NPF PLANETA, 2000, pp. 93-97).

The disadvantages of the GK6 generator are: the lack of its own source of control codes and, as a result, the inability to configure their parameters; the inability to adjust the carrier frequencies in operating conditions; the inability to diagnose the state of the device without the use of specialized devices.

Closest to the proposed invention is a device that functions similar to a tuning fork generator GK6 and called a tuning fork generator GKSh. This device consists of a control code generator, a code selection scheme, a carrier frequency generator, a signal amplifier and a protection unit and coordination with the communication line (Soroko V.I., Rosenberg E.N. “Railway automation and telemechanics equipment”: Reference: 2 Prince Kn. 2. - 3rd ed. - M.: NPF PLANETA, 2000, pp. 103-107).

Due to the presence of its own generator of control codes, the GKSH tuning fork generator does not require an external source of control codes, however, their parameters cannot be adjusted in operating conditions. All other disadvantages indicated for the GK6 tuning fork generator are also characteristic of the GKSh tuning fork generator.

The aim of the invention is to enable:

- settings for the carrier frequency of the signal;

- settings of control codes;

- diagnosis, without the use of specialized equipment, of the state of the device due to the continuous indication of its operation.

This goal is achieved by the fact that the signal generator of the frequency control system, comprising a control code generator, a code selection circuit, a carrier frequency generator, a signal amplifier and a protection and matching unit with a communication line, the output of the control code generator being connected to a code selection circuit, the output of which it is connected to the input of the carrier frequency generator, which is connected with its output to a signal amplifier connected to the input of the protection unit and matching with the communication line, and to the output of the protection unit and matching A communication line is connected to the communication line; it is supplemented by a module for interfacing with controlled devices, a module for setting control codes, a module for tuning the carrier frequency, an indication unit, and a filtering block for spurious harmonics; moreover, the input of the module for pairing with controlled devices is connected to the automatic blocking device at the signal point or to devices automation at the crossings, and its output is to the code selection circuit, the control code settings module is connected to the input of the control codes generator, the settings module esuschey frequency generator connected to the input of the carrier frequency, the display unit is connected to the outputs of the generator control codes, and code selection circuit generator carrier frequency filtering unit spurious harmonics its input connected to the output of the carrier generator, and the output - to the amplifier signal.

Figure 1 shows a block diagram of the proposed device.

The device operates as follows.

Codes selection scheme (ICS) 5 through galvanic isolation in the module for interfacing with controlled devices (MCS) 4 receives information about the status of devices of the signaling point of automatic blocking or moving automation devices 3, and control codes from control codes generator (CCC) 2 receive control codes. The parameters of the control codes generated by the MCC are set using the module for setting control codes (MNCC) 1.

Based on the information received in the form of signals from the monitored devices, the ICS selects a control code corresponding to their condition and train situation. The selected code is supplied to the carrier frequency generator (LFO) 8 and performs its on or off. In the on state, the LFO generates rectangular pulses with a frequency corresponding to a constant specified in the carrier frequency tuning module (MNF) 7. The signal thus manipulated from the LFO output is fed to the input of the parasitic harmonics filtering block (BPSF) 9, which filters the higher harmonics of the signal and thereby converts it into a harmonic signal with a frequency corresponding to the frequency of the pulses arriving at the input of the BFG.

The harmonic signal from the output of the BFG is fed to the input of a signal amplifier (US) 10, which amplifies the signal to the required level. From the output of the control unit, the signal enters the input of the protection and coordination unit with the communication line 11, which galvanically separates the signal generator of the frequency control system from the communication line 12, and protects it from disturbing and dangerous influences.

Also, as part of the proposed device, a display unit (BI) 6 is provided, which is connected to the outputs of GKK 2, SVK 5 and LFO 8. Using the BI, the current values of all control codes generated by the HSC, the control code selected by the ICS and used to manipulate the carrier signal are displayed the frequency of the generated LFO, and directly the signal coming from the output of the LFO to the BFPG. Based on the information obtained using the BI, it is possible to judge the correct generation of control codes, the correspondence of the transmitted control codes to the actual train situation and the state of the signal point devices, and the correspondence of the manipulated signal at the LFO output to the control code selected by the ICS. This allows you to speed up the process of diagnosing and detecting malfunctions in the operation of the proposed device.

The present invention allows for the operation of a frequency dispatch control system while maintaining the existing principles of information transfer, which makes it possible to gradually switch to the use of new equipment during ongoing operation. This is an important advantage when introducing new equipment in railway transport. The presence of such functions as setting the parameters of the control codes generated by the HCC, setting the required carrier frequency of the LFO and indicating diagnostic signals during operation of the signal generator of the frequency dispatch control system makes it possible to use this device instead of any of its prototypes, and simplifies the process of setting and detecting it malfunctions.

Claims (1)

A signal generator of a frequency dispatch control system comprising a control code generator, a code selection circuit, a carrier frequency generator, a signal amplifier and a protection and coordination unit with a communication line, the output of the control code generator being connected to a code selection circuit, the output of which is connected to the input of the carrier frequency generator , which is connected by its output to a signal amplifier connected to the input of the protection and coordination unit with the communication line, and a line is connected to the output of the protection and coordination unit with the communication line connection, characterized in that it additionally includes a module for interfacing with controlled devices, a module for setting control codes, a module for tuning the carrier frequency, an indication unit, a filtering block for spurious harmonics, the input of the module for interfacing with controlled devices connected to the automatic blocking equipment at the signal point or automation devices at the crossings, and its output is to the code selection circuit, the control code settings module is connected to the input of the control codes generator, the settings module carries to it, the frequency is connected to the input of the carrier frequency generator, the display unit is connected to the outputs of the control code generator, the code selection circuit and the carrier frequency generator, the parasitic harmonic filtering unit is connected with its input to the output of the carrier frequency generator, and the output to the signal amplifier.