RU2403160C1 - Control unit for electric switch mechanism - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention refers to the field of automation and telemechanics on railway transport and can be used to control hump electric switch mechanism. Control unit for electric switch mechanism contains input devices module (1), control relay for positive point position (2), control relay for negative point position (3), set of positive (4) and negative (5) polarity modules, two circuits for relay control by positive polarity (6) and negative polarity (7), motor (8), control relay (9), current sensor (10) and data acquisition and processing module (11). Positive polarity module set contains two signal generation modules (12) and (13) for logic processing input signals and control signals generation, control module and two contactless switches (15) and (16) with built-in control and diagnostic circuits. Sets of positive (4) and negative (5) polarity modules have the same structure.

EFFECT: increase in sensitivity, safety and reliability of device operation.

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Description

The invention relates to the field of automation and telemechanics in railway transport and can be used to control a slide switch electric drive.

It is known "Control device for a hump AC electric drive" (RF patent No. 2318692, priority 2006.06.23, bulletin "Inventions. Utility models" No. 7, 2008) containing a phase monitoring device, a starting relay, a relay for monitoring the position of the arrow, reversing elements and contactless keys, current sensors, auto-return relays, electric drive operation monitoring device, technical diagnostics relay.

The disadvantages of the device are the presence of a large number of relays, the lack of diagnosis of operation parameters and self-diagnosis of the functioning of internal nodes.

The task to be solved by the claimed invention is directed, is the creation of reliable technical means with advanced functionality, the exclusion of relays from the control circuits of the switch drive, the diagnosis of electrical and time parameters of work and the self-diagnosis of the functioning of internal nodes with the issuance of messages to the automatic slide centralization system.

The solution to these problems provides increased sensitivity, safety and reliability of the device due to the fact that data processing and transmission of the executive command to the electric drive is carried out by two simultaneously working sets of modules, each of which consists of two data processing channels that control the main and auxiliary contactless keys corresponding to for transferring to one of the provisions, while all data processing channels control the transmitted information by taking position data turnout from the sensors of a non-contact automatic switch of the electric drive, and after receiving a command from the automatic slide centralization device to switch the arrow, if after a time after its implementation and removal of the signal "control of the initial position" the signal "control of the translated position" is not recorded, the unit automatically implements the translation of the arrow to its original position.

The drawings show a structural diagram of a control unit for a turnout electric drive (Fig. 1), comprising: an input device module (MVU) 1 and a relay for monitoring the positive position of the arrow (RCP) 2 and negative (RCM) 3, a set of modules positive (ILC) 4 and negative (KMM) 5 polarity, two relay control circuits (KR) 6 plus and 7 negative polarity, motor (M) 8 (not included in the unit), control relay (RU) 9, current sensor (DT) 10 and the collection module and information processing (MSOI) 11.

Sets of modules of positive 4 and minus 5 polarity have the same composition and principle of operation, which we will consider using the example of a set of modules of positive 4 polarity (Fig. 2), which is two data processing channels that control contactless keys that are responsible for transferring to one of the positions. KMP 4 contains two control signal generation modules (MFSUs) 12 and 13 for the logical processing of input signals and generate control signals, MK 14 control module and two contactless keys (БК1 +) 15 and (БК2 +) 16 with integrated control and diagnostic circuits, signals with which go to the control circuit of the relay of the corresponding polarity 6 or 7, and then to the electric motor 8 and through the control relay 9 to the current sensor 10.

The control unit switch electric works as follows.

MVU 1 is designed to coordinate the logical levels of signals from external devices - turnout switch, automatic centralization hill switch to switch the switch, integrated protection section of the switch section (BKZS), and also provides overvoltage protection.

RKP 2 and RKM 3 relays are intended for linking the control unit of a turnout electric drive with existing relay devices of automatic automatic centralization. RCP 2 is in an excited state when the arrow is in the plus position, RKM 3 is in an excited state when the arrow is in the minus position.

Logical processing of input signals and the formation of engine control signals is carried out by the MFSU modules 12 and 13 for positive polarity, as well as negative polarity modules that function identically. However, the functional diagram of the device as a whole assumes a specific purpose for each of these modules, namely: MFSU 12 and 13 controls a positive pair of proximity keys (BK1 +) and (BK2 +), generating control signals UK1 + and UK2 +, and modules of negative polarity control a negative pair contactless keys (BK1-) and (BK2-), forming control signals UK1- and UK2-. Turning on the engine to switch the arrow is provided only when both unipolar contactless keys of the plus or minus pair are closed simultaneously, provided that at least one contactless key of the opposite polarity is open.

In the absence of a command to switch the arrow, continuous dynamic monitoring of the health of contactless keys is carried out. Each pair with a given period alternately (to prevent the engine from starting) closes and opens its contactless keys: when the keys are closed (BK1 +) and (BK1-), the keys (BK2 +) and (BK2-) are open, and vice versa. The signals SK1 +, SK1-, SK2 +, SK2- from the positive proximity keys (BK1 +) 15 and (BK2 +) 16 and, respectively, from the negative proximity keys are monitored by the MFSU, the equivalence of these signals is controlled by safe comparison elements MK 14 and MK of negative polarity. Moreover, the MK 14 element controls the keys (BK1 +) and (BK2 +), designed to turn on the engine to move the arrow to the plus position, the negative polarity control module - the keys (BK1-) and (BK2-), designed to turn on the engine to switch the arrow to negative position. If the equivalence of the monitored signals is positive, a dynamic signal of a given frequency F_EXIT + for positive polarity is generated at the output of MK 14, a dynamic signal F_EXIT- for negative polarity is generated at the output of a minus polarity MK, the presence of which is a necessary condition for providing the ability to control contactless keys of a certain polarity . Since the MK 14 element controls the keys (BK1 +) and (BK2 +), if there is a mismatch of the controlled signals of a given duration, the MK 14 will fail and the dynamic signal F_EXIT1 from its output will not go to the contactless keys 15 (BK1 +) and 16 (BK2 +) , which, of course, will entail their opening.

When a translation command is given, the arrows of the MFSU 12 and 13 generate a signal to turn on the RU 9, after confirming that the RU 9 is turned on, by the KR 6 circuits, the MFSU 12 and 13 modules generate control signals for keys of one polarity - to close, for keys of another polarity - to open .

RU 9 provides complete disconnection of the turnout to exclude the transfer from neighboring turnouts in the event of a possible cable closure.

When a command is received from an external automatic slide centralization device to move the arrow to the plus position, if after the start of its implementation and taking the signal from PK 6 of the plus position of the arrow, there is no PK 7 of the minus arrow position, provided the switch section is free, block automatically implements the transfer of the arrow to its original position, including if during the transfer to the plus position the ILC 4 fails.

When a command is received from an external automatic slide centralization device to move the arrow to the minus position, if after 6 hours after the start of its implementation and removal of the signal from PK 7 of the minus position of the arrow, PK 6 of the plus position of the arrow is not detected, provided the switch section is free, block it automatically implements the transfer of the arrow to its original position, including if the KMM 5 fails when translating to the plus position.

DT 10 measures the current in the motor drive control circuit and transfers this information to the MFSU modules 12 and 13. If, when a transfer command is implemented, after a certain time, the current in the engine control circuit is below acceptable, then the transfer stops.

MSOI 11 is designed to collect and process control and diagnostic information about the received signals from the switch, from automatic hill centralization devices to switch the switch, from the integrated protection unit of the switch section (BKZS), about the states of the keys

(BK1 +), (BK1-), (BK2 +), (BK2-), MK positive and negative polarity, state of RU 9, as well as data on the current strength in the engine control circuit from DT 10. Based on the information received, this module generates a control -diagnostic information and transmits to the control computer complex via two serial interfaces.

Claims (1)

A switchgear control unit comprising an arrow position monitoring relay, a current sensor, an electric drive operation monitoring device, proximity keys, characterized in that it contains an input device module, two sets of modules, each of which consists of two channels, the signal from the input device module arrives at once on both sets of modules, each of which contains two control signal generation modules, a control module and two contactless keys of the same polarity with integrated control circuits and diagnostics, the signals from which are sent to the control circuits of the relay of the corresponding polarity, and then to the electric motor of the motor, and through the control relay to the current sensor, the output of which is connected to the data acquisition and processing module, and to the control signal generation modules of both polarities, providing control of the electric drive operation, at the same time, the position control relays of the arrow of both polarities are designed to link the control unit of the pointer electric drive with the existing relay devices of the automatic slide center In this case, control signal generation modules control a pair of contactless keys and generate control signals, and contactless key signals are monitored by control signal generation modules, the equivalence of these signals is monitored by the control module, and when an arrow command is given, the control signal generation modules generate a control signal to activate the relay control, while data processing and transmission of the executive command to the electric motor of the engine is carried out two simultaneously about working sets of modules, and the information collection and processing module carries out continuous dynamic monitoring of the health of contactless keys, the control module, the module for generating control signals and current in the electric motor circuit, generates and transmits diagnostic and control information via two serial interfaces to external devices.

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