KR20060028719A - Receiver of a railway circuit - Google Patents

Abstract

The present invention relates to a track receiver device in a railway track circuit system, and can easily change the reception sensitivity by a rotary switch method, and a display unit for displaying the carpet state of the fuse, and whether the receiver input voltage and current is normally applied. Display for displaying the signal, Display for displaying the relay voltage and operation status, Display unit for the load of the sensing device, Display for performing the restart operation of the monitoring device, Measurement for measuring the receiver output voltage and relay output voltage By constructing the point on the front of the display panel, it is possible to quickly identify the location of a failure in case of failure, and to provide a track receiver device in a railway track circuit system that enables the receiver to easily recognize the driving state of the receiver even in the case of unskilled workers. There is a purpose.

A receiver device for receiving a signal of a transmitter device transmitted through a track rail, the present invention comprising: an input transformer for performing a frequency interface to match the impedance between the track rail and the receiver device to minimize signal loss; A high pass filter configured at a secondary side of the input transformer to pass only a high frequency frequency and block a low frequency frequency; A low pass filter configured on a secondary side of the input transformer to pass a low frequency band and block a high frequency frequency; An amplifier configured at a rear end of the high pass filter and the low pass filter to amplify a signal passing through the high pass filter and the low pass filter; A filter connected to an output terminal of the amplifier, for filtering a noise signal included in a signal passing through the amplifier, for signal matching; A demodulation unit for performing pulse code modulation to digitize a digital signal by receiving and modulating a frequency signal, which is an analog signal for orbital communication; An AND gate connected to an output side of each demodulator, for receiving a pulse signal output from the demodulator, and performing a logic operation; A delay unit connected to the output side of the AND gate and performing a signal delay for at least two seconds; A relay driving unit connected to an output terminal of the delay unit for receiving high and low signals from the delay unit and automatically controlling power interruptions for a sensing circuit at a later stage by a pulse signal of a receiver circuit; And a display panel connected to a circuit of the receiver device for displaying a driving state of the receiver device.

According to the present invention, since the reception sensitivity can be easily changed by the rotary switch method, even a non-skilled worker can change the reception sensitivity to receive a signal in an optimal reception sensitivity band, and display the carpet state of the fuse. A display unit for indicating whether the receiver input voltage and current are normally applied, a display unit for displaying the relay voltage state and an operation state, whether or not the sensing device is loaded, and a display unit for restarting the monitoring device. It is very convenient because it can quickly determine whether the failure and the location of the failure.

Description

Track receiver system in railway track circuit system {RECEIVER OF A RAILWAY CIRCUIT}

1 is a perspective view showing the appearance of a track receiver device in a railway track circuit system according to an embodiment of the present invention;

2 is a block diagram showing a circuit configuration of a track receiver device in a railway track circuit system according to an embodiment of the present invention;

3 is a circuit diagram showing a specific circuit configuration of a track receiver device in a railway track circuit system according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

6: display panel, 8: fuse display,

10: receiver input power display unit (voltage), 12: monitoring unit check unit,

14: Receiver input power display (current), 16: relay voltage display,

18: Relay operation status display section, 26, 28: Receive entry / exit measurement port,

24a, 24b: reception sensitivity setting section, 30: input transformer,

32,34: high / low pass filter, 36,42: amplifier,

38, 44: filter, 40, 46: demodulation,

48: Andgate, 50: Delay part,

52: relay unit.

The present invention relates to a track receiver device in a railroad track circuit system, and more particularly, the reception sensitivity can be easily changed by a rotary switch method, and a display unit for displaying a carpet state of a fuse, and a receiver input voltage and current Display unit for indicating whether it is normally applied, display unit for indicating relay voltage state and operation state, display unit load for sensing device, display unit for restart operation of monitoring device, receiver output voltage and relay output voltage By configuring the measuring point on the front of the display panel, it is possible to quickly identify the location of the failure in the event of a failure, and to the track receiver device in the railway track circuit system to easily recognize the driving state of the receiver even for unskilled workers. It is about.

As is well known, a Swiss SIC insurance company analyzed the world's major accidents during the year (92 years) and found that on average 0.8 cases per day were sacrificed at 1,90 people. The number of accidents was 176 (35.9%) of natural disasters, with 55 road and rail accidents, 18.5%, 43 water accidents, 14.4%, 35 large fires, 11.7%, and 28 air accidents, 9.4. % Was net. More important than the number of accidents, however, is how much casualty or property damage is.

According to the data, the fatalities (dead) caused by such major accidents were followed by natural disasters caused by typhoons, floods, and earthquakes. Two to four times more casualties were reported.

In particular, most of the train accidents occur in underdeveloped countries, and the cause of the accident is that the crash or derailment of the train due to the failure of signal security accounts for the majority of the accidents. As described above, due to the characteristics of rail traffic that transports a large number of passengers and cargo, safety accidents caused by breakdowns of security devices can be catastrophic, devastating to national as well as individuals.

Here, the railway signal security device means each device related to the safe driving of a vehicle, that is, a signal device, an interlock device (mechanical linkage, electric relay interlock), a blockage device, an automatic train control device, and other devices. To operate automatically and systematically.

Among them, the track circuit device belonging to the electric relay interlock device is composed of track circuit transmitter device, bond, track insulation and track circuit receiver device, so that the vehicle running on the track cannot be detected and switched to another track. It plays a role in making electric circuits on a certain section of rail.

The conventional track circuit device includes a power module device, a transmitter device, a receiver device, and a relay device. In this case, the conventional track circuit receiver device uses a signal frequency transmitted from a transmitter device to position on a track of a vehicle. It is possible to grasp information, various fault signals, and track abnormalities. More specifically, the conventional track circuit receiver apparatus performs track circuit detection, track relay control, fuse detection, and various output voltage detection.

When such a conventional track circuit receiver device receives a frequency from the transmitter device, a difference in reception sensitivity occurs from time to time according to the transmitter's transmission frequency or track condition. Therefore, in order to maintain a higher reception sensitivity when a difference in reception sensitivity of the receiver device is generated, a plurality of slots are formed at the rear end of the device so that the connection position of the cable connected to the input transformer can be changed at any time according to the reception frequency.

However, in this case, after the operator checks the frequency reception status, it is inconvenient to change the cable connection position connected to the input transformer at the rear end of the device. There was a problem that it was difficult to know whether the reception sensitivity was changed only when a plurality of cables were connected.

In addition, the conventional track circuit receiver device has no choice but to check the input voltage or current value, fuse fusion state, load state, relay operation state, and operating state of the monitoring device by directly checking the tester with a terminal using a tester. In the case of unskilled workers, it was difficult to recognize whether the track circuit receiver was operating properly, the location of failure in case of failure, and even if the voltage and current were checked by the tester, the manager directly checked the reference voltage value and the current value. It was very inconvenient because it was possible to determine whether the normal output was achieved only by memorizing.

In addition, the conventional track circuit receiver has no method of visually confirming whether the output state of the output frequency is properly performed. Since the connection state of the connected monitoring device or the operation state of the monitoring device cannot be easily checked, the unskilled technician manages it. There was a great difficulty to follow, and even a skilled worker had a problem that it was very difficult to identify the failure or recognize the location of the failure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described state of the art, and the reception sensitivity can be easily changed by a rotary switch method, and a display unit for displaying the melting state of the fuse, and whether the receiver input voltage and current are normally applied Display unit for displaying, Display unit for displaying relay voltage state and operation state, Display unit for load of sensing device, Display unit for restart operation of monitoring device, Measuring point for measuring receiver output voltage and relay output voltage By constructing the front of the display panel, it is possible to quickly identify the location of a failure in the event of a failure, and to provide a track receiver device in a railroad track circuit system that can easily recognize the driving state of a receiver even for unskilled workers. There is this.

In order to achieve the above object, according to a preferred embodiment of the present invention, a receiver device for receiving a signal of a transmitter device transmitted through a track rail, the impedance between the track rail and the receiver device to match the loss of the signal An input transformer for performing a frequency interface to minimize it; A high pass filter configured at a secondary side of the input transformer to pass only a high frequency frequency and block a low frequency frequency; A low pass filter configured on a secondary side of the input transformer to pass a low frequency band and block a high frequency frequency; An amplifier configured at a rear end of the high pass filter and the low pass filter to amplify a signal passing through the high pass filter and the low pass filter; A filter connected to an output terminal of the amplifier, for filtering a noise signal included in a signal passing through the amplifier, for signal matching; A demodulation unit for performing pulse code modulation to digitize a digital signal by receiving and modulating a frequency signal, which is an analog signal for orbital communication; An AND gate connected to an output side of each demodulator, for receiving a pulse signal output from the demodulator, and performing a logic operation; A delay unit connected to the output side of the AND gate and performing a signal delay for at least two seconds; A relay driving unit connected to an output terminal of the delay unit for receiving high and low signals from the delay unit and automatically controlling power interruptions for a sensing circuit at a later stage by a pulse signal of a receiver circuit; Provided is a track receiver device in a railroad track circuit system, comprising a display panel connected to a circuit of the receiver device and configured to display a driving state of the receiver device.

Preferably, the display panel includes a reception sensitivity setting unit configured to be respectively configured in the primary windings of the input transformer and to be switched within different reception sensitivity bands to adjust reception sensitivity; A fuse display unit for displaying a carpet state of the fuse by blinking an LED; A receiver input power supply (voltage / current) display unit for displaying whether the receiver input voltage and current are normally applied; A relay voltage / operation state display unit for displaying the relay voltage state and the operation state; A display unit for performing a restart operation of the monitoring apparatus and whether the sensing apparatus is loaded; Provided is a track receiver apparatus in a railroad track circuit system comprising a measuring port for measuring a receiver output voltage and a relay output voltage.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

1 is a perspective view showing the appearance of a track receiver device in a railway track circuit system according to an embodiment of the present invention.

Referring to this, the track receiver device 2 in the railroad track circuit system according to an embodiment of the present invention can easily change the reception sensitivity by a rotary switch method, and a display unit for displaying the carpet state of the fuse, A display unit for indicating whether the receiver input voltage and current are normally applied, a display unit for displaying the relay voltage state and operation state, whether the sensing device is loaded, a display unit for restarting the monitoring device, and the receiver output voltage By configuring the measuring point to measure the output voltage of the relay on the front of the display panel, it is possible to quickly identify the location of the failure in case of failure and to easily recognize the driving state of the receiver even in the case of unskilled workers.

The track receiver device 2 in the railway track circuit system according to an embodiment of the present invention is first provided with a housing 4 constituting the receiver device 2 by embedding a circuit and various boards and chips, the enclosure In front of (4), a display panel 6 for displaying the driving states of the various receiver devices 2 is provided.

The display panel 6 is provided with reception sensitivity setting units 24a, 24b, and 24c that can change the connection according to the reception sensitivity by easily switching the reception sensitivity by a rotary switch method, and the fuse state of the fuse is LED. A fuse display unit 8 for displaying through blinking of the lamp; Receiver input power (voltage / current) display units 10 and 14 for indicating whether the receiver input voltage and current are normally applied; Relay voltage / operation status indicators 16 and 18 for indicating relay voltage status and operating status, display unit 12 for performing a restart operation of the monitoring device, whether the sensing device is loaded, and the receiver output voltage and relay output. Measuring ports 26 and 28 for measuring voltage are configured on the front surface.

Accordingly, the track receiver device 2 in the railroad track circuit system according to an embodiment of the present invention can easily recognize the fault location and the cause of the fault, even through the various display units provided in the display panel 6. Since it is possible to easily switch the transformer input terminal according to the reception sensitivity, it is possible to maintain the best reception sensitivity, and it is possible to easily determine whether or not the normal operation of the receiver device (2).

2 is a block diagram illustrating a circuit configuration of a track receiver apparatus in a railroad track circuit system according to an embodiment of the present invention, and FIG. 3 is a track receiver in a railroad track circuit system according to an embodiment of the present invention. A circuit diagram showing a specific circuit configuration of the device.

Referring to this, the track receiver device 2 in the railway track circuit system according to an embodiment of the present invention is the reception sensitivity setting unit 24a, 24b, 24c, the input transformer 30, the high pass filter (High pass filter) 32, low pass filter 34, amplifiers 36 and 42, filters 38 and 44, demodulators 40 and 46, and gate 48 and delay unit 50 The relay driving unit 52 and the display panel 6 are configured.

The reception sensitivity setting units 24a, 24b, and 24c are respectively configured in the primary windings of the input transformer 30 to be switched within different reception sensitivity bands to adjust the reception sensitivity, and the input transformer 30 is It is a means for performing a frequency interface in order to minimize the loss of the signal by matching the impedance between the track rail (not shown) and the receiver device (2).

In addition, the high pass filter (32) is configured on the secondary side of the input transformer 30 as a means (HPF) for passing only the high frequency (High) and the low frequency (Low) to cut off, And a low pass filter (34) configured on the secondary side of the input transformer (30) to pass a low frequency (Low) and to block a high frequency (High). (LPF).

The amplifiers 36 and 42 are configured at the rear ends of the high pass filter 32 and the low pass filter 34, respectively, and the high pass filter 32 is provided. And a low pass filter (34) means for amplifying the signal.

The filters 38 and 44 are connected to the output terminals of the amplifiers 36 and 42 to filter noise signals included in the signals passing through the amplifiers 36 and 42, and are means for signal matching. (40, 46) (Demodulator) is a means for performing pulse code modulation for digitizing a digital signal by receiving and modulating a frequency signal, which is an analog signal for orbital communication.

The AND gate 48 is connected to an output side of each of the demodulators 40 and 46, and is a means for performing logic operation by receiving a pulse signal output from the demodulators 40 and 46. Reference numeral 50 is a means for being connected to the output side of the end gate 48 to perform a signal delay of 2 seconds or more, and the relay driving part 52 is connected to an output terminal of the delay part 50, It is a means for automatically controlling the power interruption to a later sensing circuit (not shown) by receiving a high signal and a high signal by a pulse signal of a receiver circuit.

The display panel 6 is a panel which is connected to a circuit of the receiver device and displays a driving state of the receiver device. The display panel 6 can easily change the reception sensitivity according to the reception sensitivity by easily switching the reception sensitivity using a rotary switch method. The setting units 24a, 24b, and 24c are connected to the primary side of the input transformer 30, respectively, and may set different reception sensitivity as they are switched.

In addition, a fuse display portion 8 is formed in the display panel 6 to display the fusion state of the fuse through the blinking of the LED, and the fuse display portion 8 is a fuse (not shown) connected to the power input end of the circuit. The LED is connected to the ground side of the c) so that the fuse is turned off, and the receiver input power (voltage / current) display parts 10 and 14 for indicating whether the receiver input voltage and current are normally applied are configured. It is composed of LEDs connected to the power input terminal of the circuit through a resistor, and the output side of the LED is grounded so that it is turned on when a constant voltage and current are applied.

In addition, the relay voltage / operation state display units 16 and 18 for displaying the relay voltage state and the operation state have an LED connected to the output side of the relay driver 52 via a resistor, and the output side of the LED is grounded so that the relay is grounded. It is turned on during normal driving of the lamp, and is turned on when the normal voltage flows into the relay.

In addition, the display unit 12 for performing a restart operation of the monitoring device and whether or not the sensing device is loaded is configured, and the LED is connected to the load side of the monitoring device (not shown) connected to the relay driver 52. The grounding device is configured in parallel with the monitoring device, and is configured to turn on when the monitoring device is normally driven. The measurement ports 26 and 28 for measuring the receiver output voltage and the relay output voltage are configured.

On the other hand, the track receiver device in the railway track circuit system according to an embodiment of the present invention is not limited to the above embodiments, but various modifications can be made without departing from the technical gist of the present invention.

As described above, the track receiver device in the railroad track circuit system according to the present invention can easily change the reception sensitivity by a rotary switch method, so even the unskilled workers can change the reception sensitivity to obtain a signal in the optimal reception sensitivity band. A display unit for indicating the melting state of the fuse, a display unit for indicating whether the receiver input voltage and current are normally applied, a display unit for displaying the relay voltage state and the operation state, and whether the sensing device is loaded or not. And, since the display unit for restart operation of the monitoring device can quickly determine whether the failure and the location of the failure is very convenient.

Claims (2)

A receiver device for receiving a signal of a transmitter device transmitted through a track rail, comprising: an input transformer for performing a frequency interface to match a impedance between the track rail and a receiver device to minimize signal loss; A high pass filter configured at a secondary side of the input transformer to pass only a high frequency frequency and block a low frequency frequency; A low pass filter configured on a secondary side of the input transformer to pass a low frequency band and block a high frequency frequency; An amplifier configured at a rear end of the high pass filter and the low pass filter to amplify a signal passing through the high pass filter and the low pass filter; A filter connected to an output terminal of the amplifier, for filtering a noise signal included in a signal passing through the amplifier, for signal matching; A demodulation unit for performing pulse code modulation to digitize a digital signal by receiving and modulating a frequency signal, which is an analog signal for orbital communication; An AND gate connected to an output side of each demodulator, for receiving a pulse signal output from the demodulator, and performing a logic operation; A delay unit connected to the output side of the AND gate and performing a signal delay for at least two seconds; A relay driving unit connected to an output terminal of the delay unit for receiving high and low signals from the delay unit and automatically controlling power interruptions for a sensing circuit at a later stage by a pulse signal of a receiver circuit; And a display panel connected to a circuit of the receiver device for displaying a driving state of the receiver device. The display panel of claim 1, wherein the display panel comprises: a reception sensitivity setting unit configured to be respectively configured in the primary windings of the input transformer and to be switched in different reception sensitivity bands; A fuse display unit for displaying a carpet state of the fuse by blinking an LED; A receiver input power supply (voltage / current) display unit for displaying whether the receiver input voltage and current are normally applied; A relay voltage / operation state display unit for displaying the relay voltage state and the operation state; A display unit for performing a restart operation of the monitoring apparatus and whether the sensing apparatus is loaded; A track receiver device in a railroad track circuit system comprising a measuring port for measuring a receiver output voltage and a relay output voltage.

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