RU31554U1 - Device for transmitting and receiving critical information - Google Patents

Description

A device for transmitting and receiving critical information.

The utility model relates to railway automation and telemechanics, namely, devices containing critical information.

It is known “A device for activating an executive relay of railway automation (copyright certificate No. 1017570, B61L 23/16, priority 03/02/81), containing the first switching unit, one input of which is connected to the first output of the pulse signal generation unit, and the other is connected to one power source. It is equipped with a second switching unit, another power source and a voltage multiplier, while one input of the second switching unit is connected to the second output of the pulse signal generating unit. The second input is connected to another power source, and the outputs of one and the other switching blocks are connected to the input of the voltage multiplier connected by the output to the executive relay.

However, in this device, it is necessary to use two bipolar power sources. In addition, it uses a complex multiplication block scheme.

It is also known “Device for activating an executive relay (copyright certificate No. 1017571, B61L 23/16, priority 11.12.81), containing the first and second switching units, one of whose inputs are connected to the outputs of the pulse signal generating unit. Another input of the first switching unit is connected to the positive pole of one power source, and the other input of the second switching unit is connected to the negative pole of another power source. Moreover, the negative pole of one power source is connected to the positive pole of another power source, the outputs of the switching units are connected to the input of the voltage multiplier, the output of which is connected to an executive relay. It is additionally equipped with a choke, one output of which is connected to the input

in 61 L 19/14 V 61 L 23/16

a voltage multiplier, and the other to connected poles of power supplies.

However, in this device, it is required to use two bipolar power sources, and the presence of a choke reduces the reliability of the device. In modern microelectronics, the use of inductive components is inappropriate.

Also known is a "Device for transmitting pulse signals for monitoring elements of railway automation and telemechanics (copyright certificate No. 1242414, B61L 19/14, NOZK 19/23, priority 13.07.84), containing isolation units, the first input of each of which is connected to the output the corresponding source of pulse signals, and the outputs are connected to the receiving unit. It is additionally equipped with inverters, the output of each of which is connected to the second input of the corresponding isolation unit. Moreover, the input of the second inverter is connected to the output of the first source of pulse signals, the input of the third inverter to the output of the second source of pulse signals, and the input of the first to the output of the third source

pulse signals.

However, in this device, the serviceability of isolation blocks is not controlled.

It is also known "Device for decoding pulse signals of electrical centralization (copyright certificate No. 1393698, B61L 1/20, priority 10.28.85), containing a pulse voltage shaper, the output of which is connected to the input of the voltage multiplier and the actuator, characterized in that, in order to increase reliability, it is equipped with an additional pulse voltage driver and a key element made in the form of a field-effect transistor, the source of which is connected to the output of the voltage multiplier, the drain is connected to spolnitelnym element and the gate connected to the output of an additional voltage pulse shaper.

However, this device requires the use of a double-wound polarized relay.

Also known are actuator switching devices, (“Methods for constructing safe microelectronic systems of railway automation, edited by VV Sapozhnikov, M., Transport, 1995, pp. 252-262, Fig. 8.3, 8.5, 8.7, 8.8, 8.16 ) They contain, as a rule, transformer or capacitor galvanic isolation. Pulse transformers are non-technological elements. In galvanic capacitor isolation, it is required to use a polarized relay with an asymmetrical failure.

Thus, in these devices there is a transformer, inductor, double-wound polarized relay, and also uses a complex voltage multiplication scheme.

Also known is a “Device for activating an executive relay of railway automation (copyright certificate No. 1588615, B61L 19/14, НОЗК 19/23, priority July 27, 87), containing pulse signal sources, inverters, an executive unit, to the input of which blocks are connected by outputs isolation, each of which has a capacitor and a diode connected in series, one of the plates of which and the other output are the inputs of the isolation blocks, some of which are connected through inverters to one of the outputs, and the other to other outputs of the source of impulses pure signals. In this case, the isolation blocks are additionally equipped with optocouplers, the LED of one of which is connected through a resistor parallel to the diode of one of the isolation blocks. Another isolation unit has additional diodes and a capacitor connected in series with one of the diodes, one of the output connected to the other output of the first diode of its isolation unit, and the other additional diode to one of the terminals of the optocoupler LED connected through the third additional diode and the other a resistor parallel to said first diode. Another plate of the additional capacitor formed the third input of this

decoupling unit, which is connected to one of the sources of pulse signals, which is connected to the inverter of the first decoupling unit, and their outputs are formed by phototransistors of decoupling units.

However, this device also uses a double-wound polarized relay, and in addition, an open circuit in the output circuits of the optocouplers is not controlled. In addition, in the absence of pulses at two of the three inputs, the LEDs are affected by the charge voltage of the capacitors, approximately two times less. As a result, the optocouplers do not switch, and the executive relay releases the anchor. Reducing the voltage by half is not enough, since the optocouplers have a greater spread in sensitivity.

The closest in technical essence and the achieved effect to the claimed utility model is “A device for activating executive relays of railway automation (certificate No. 14368, B61L 19/14, NOZK 19/23, priority 20.03.2000). It contains two sources of information made in the form of microprocessor-based computing channels for receiving paraphase signals, two channels consisting of series-connected galvanically isolated input converters, decoders of paraphase signals, output converters with galvanic isolation, matched pairs of output relays and executive relays, as well as generators pulses in each channel connected to the second inputs of the paraphase signal decoders. Each channel of this device is equipped with an input set control module and a common for two channels of the relay control of the consistency of pairs of output relays and admissibility of input sets, the inputs of the input set control modules connected to the outputs of the input converters, and the outputs of the input set control modules connected to the inputs of the paraphase signal decoders

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control, and the control relay input sets are connected to the outputs of the output control converters, and the relay control the consistency of pairs of output relays and the admissibility of the input sets is connected to the power source through series-connected switching contacts of the matched pairs of output relays and control relays of the input sets, as well as through its own front contact .

However, in this device, the responsibility of the input and output information is insufficient.

The task to which the claimed utility model is directed is to increase the safety of train traffic by increasing the responsibility of input and output information.

The technical result that can be obtained using the utility model is that the input information is not realized if the “Group selection (VG)” command is incorrect, and at the same time a fault signal (NSP) is issued, and the output information at the moment can be implemented in the form of only one team.

The problem is solved due to the fact that the device for transmitting and receiving critical information containing two sets of electronic equipment, each of which includes an industrial computer, one of the inputs and outputs of which are connected to the main integrated digital communication channel, its other inputs through the modem are connected to the backup a switched communication channel, and its discrete parallel inputs / outputs are connected respectively to the module for inputting critical signals and to the module for outputting critical commands, and The contacts of the input module are the switching contacts, and the actuators of the output module are the relay windings, in addition, the device contains a relay-contact safety comparison circuit connected to

a power source and ensuring the transition of the device to a protective state in case of failures and refusals in the operation of communication channels and elements of electronic equipment complexes, and the critical signal input module in each complex contains paraphase inputs and is equipped with a VG signal control circuit that contains a series-connected input circuit, RC- ash and solid-state optical relay, to the output normally closed contacts of which the output elements of the critical signal input module are connected, and the relay circuit is supplemented by close-parallel relay contacts of critical teams connected between the power source and series-parallel connected windings and relay contacts of critical teams.

Thus, increasing the responsibility of input and output information is achieved by controlling the reading (SH) of the input information and the inadmissibility of more than one command at a given time.

The essence of the utility model is illustrated in the drawing, which shows a structural diagram of the device.

A device for transmitting and receiving critical information includes the following elements:

- two sets of electronic equipment, each of which contains the modules for inputting critical signals (MOS) - 1, industrial computer-2, modules for outputting critical signals (IOC) - 3 and modem - 4;

comparison circuit 5 relay-contact safe.

The critical signal input modules (MOS) -1 contain rectifiers -6, current stabilizers (ST) -7, galvanic isolation (GR) -8, protection devices (US) 9 output elements and a signal control circuit "Group selection (SH) -10 . Complexes of electronic equipment are connected to the main dedicated digital communication channels 11, as well as to standby switched communication channels -12. Input sources

.

The information is switching contacts OS 11 ... OS In, OS21 ... OS2p -13 of railway automation, and the output information is recorded on the output relays OK11 ... OK1p, OK21 ... OK2p, KVN1, KVN2 -14

Comparison scheme 5 safe relay contact is made on the contacts of the output relays 14 of both complexes (complex and complex 2) and control relays VOK - 15 (inclusion of the responsible command), OK - 16 (responsible command), KSK 17 (consistency control of the complexes), and The main relays are OK1 ... OKP.-18.

A device for transmitting and receiving critical information works as follows.

The inputs of both complexes are supplied with voltage from the switching contacts of the railway automation - 13, and this voltage can be constant or variable. These voltages from each switching contact - 13 are perceived by the input modules as paraphase signals. These signals, if necessary, are rectified, current-stabilized by ST-7 elements, galvanically isolated by GR-8 elements and fed to output elements with UZ-9 protection devices. Based on a short VG signal, the input information is read into the industrial computer PC -2. With normal duration of the HG signal, the control circuit 10 of this signal does not react in any way. If this condition is violated, i.e. the duration of the VG signal exceeded the set value, a capacitor is charged in the VG-10 control circuit, a solid-state optical relay is activated, and with its contacts it turns off the input information, while the PC-2 transmits a NSP malfunction signal. Thus, the paraphasing of the signals and the control of the SH signal increase the responsibility of the input information.

) Industrial computer 2 processes the input information, transfers it to

critical command modules (IOC) 3, which control the output relays OK11 ... OK1P, OK21 ... OK2p, KVN1, KVN2. -14.

Comparison scheme 5 safe relay-contact ensures the correct operation of the executive relay OK1 ... OKp. 18. In case of any inconsistent operation, the consistency relay of KSK 17 complexes, connected via a serial pin of contacts OK11 ... OK1P, OK21 ... OK2p, KVP1, KVN2 -14 and own contact KSK -17 (parallel connected VOK -15 and OK -16), de-energizes and turns off the output information. A serial-parallel circuit of contacts OKI, OK12 ... OK1 (p-1), OKln -14 provides at the given time the execution of only one command, which is required by security conditions. The VOKN button, the VOK -15 and OK -16 relays are used to force the KSK-17 relay to be forced-energized if it is de-energized for one reason or another.

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Claims (1)

A device for transmitting and receiving information containing two sets of electronic equipment, each of which includes an industrial computer, one of the inputs and outputs of which are connected to the main dedicated digital communication channel, its other inputs and outputs are connected via a modem to the backup switched communication channel, and its discrete (parallel) inputs and outputs are connected respectively to the signal input module and the command output module, and the input contacts of the input module are switching contacts, and execute The output devices of the output module are relay windings, as well as a safe relay-contact comparison circuit connected to a power source and providing the device with a protective state in case of malfunctions and failures in the operation of communication channels and elements of electronic equipment complexes, characterized in that the signal input module each complex contains paraphase inputs and is equipped with a signal control circuit for selecting a group that contains a series-connected input circuit, an RC circuit and a solid-state optical relay, to the output normal but closed contacts which is connected to the output elements of the module input signals, and the relay circuit is supplemented serial-parallel contact commands relay connected between the power source and a series-parallel-connected windings and command relay contacts.