KR20070114677A - Receiver apparatus of a railway circuit system - Google Patents

Abstract

A signal receiver apparatus of a railway signal system is provided to receive a signal within an optimum sensitivity band by changing reception sensitivity. An input transformer(30) interfaces a frequency in order to minimize loss of a signal by matching impedance between a track rail and a receiver apparatus. A high pass filter(32) is formed at a secondary side of the input transformer in order to pass only a high frequency and to block a low frequency. A low pass filter(34) is formed at the secondary side of the input transformer in order to pass the low frequency and to block the high frequency. An amplifier(36,42) amplifies the signal outputted from the high pass filter and the low pass filter. A filter(38,44) is connected to an output terminal of the amplifier in order to filter the noise signal from the output signal of the amplifier. A demodulation unit(40,46) performs a pulse code modulation process by modulating the frequency signal. An AND gate(48) performs a logical operation according to a pulse signal. A delay unit(50) is connected to an output part of the AND gate in order to perform a signal delay process. A relay driver(52) is connected to an output terminal of the delay unit in order to control the power according to the pulse signal. A display control unit(54) controls on/off states of LED(Light-Emitting Diode)s of a display panel.

Description

Signal receiver device in railway signal system {RECEIVER APPARATUS OF A RAILWAY CIRCUIT SYSTEM}

The present invention relates to a signal receiver device in a railway signal system, and in more detail, the sensitivity of the reception can be easily changed by a rotary switch method, and a display unit for displaying the melting state of the fuse, and the normality of the receiver input voltage and current. Measuring section for indicating whether or not to apply, display section for indicating relay voltage status and operation status, whether load of sensing device is loaded, display section for restart operation of monitoring device, measuring receiver output voltage and relay output voltage This invention relates to a signal receiver device in a railway signaling system that enables the user to quickly identify the location of a failure in the event of a failure by configuring a measuring point on the front of the display panel. .

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, more than 1,900 people were killed in railway accidents following 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 other words, even if the reception sensitivity is changed within the ranges of (9L, 9H, 0), and (3L, 3H, 0), (1L, 1H, 0), a plurality of frequencies (9L) are required to receive a plurality of frequencies. Since a line must be connected, 9 × 2 = 18 slots and a cable terminal are required, and in order to set up a reception of one frequency (9L), one of 18 slots must be found, and 18 cables are required. Two cables had to be found and connected.

However, this method is difficult to find the slots and cable terminals that can receive the corresponding frequency among a number of slots and cable terminals, it takes a considerable time to find the slots and cable terminals, respectively, Since it is necessary to attach a tag so as to receive the frequency, there is a problem that it is very inconvenient and takes a long time to change the reception sensitivity.

In addition, in order to check the input voltage or current value, fuse fusion state, load state, relay operation state, and operating state of the monitoring device, the conventional track circuit receiver device has to check the tester directly on the 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. 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 Its purpose is to provide a signal receiver device in a railway signal system that enables the user to quickly identify the location of a failure in the event of a failure and to easily recognize the driving state of the receiver even in the case of unskilled workers. have.

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; A display panel connected to a circuit of the receiver device for displaying a driving state of the receiver device, and a display control part for controlling the LED lighting of the display panel by receiving voltage, current, and frequency signals from an output terminal of the relay driver. Provided is a signal receiver device in a railway signal system, characterized in that configured.

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 signal receiver device in a railway signaling system comprising a measuring port for measuring a receiver output voltage and a relay output voltage.

Preferably, the reception sensitivity setting unit is connected to the primary winding of the input transformer so that three reception sensitivity values can be selected, and the six slots are connected in a circular shape and six slots are connected in a circular manner. Provided is a signal receiver device in a railway signaling system, comprising a switch consisting of a rotatable terminal rotatably connected to a center portion of a slot for connecting two of the slots to select a reception sensitivity value.

Preferably, the reception sensitivity value selectable using the reception sensitivity setting unit may be one of (9L, 9H, 0), (3L, 3H, 0), (1L, 1H, 0) for each switch. Provided is a signal receiver device in a railway signaling system, characterized in that it can be selected.

Preferably, the rotatable terminal is provided with a signal receiver device in a railway signal system, characterized in that a key hole for inserting a key in the center thereof is formed.

The signal receiver device in the railway signal system according to the present invention can easily change the reception sensitivity by a rotary switch method, so even the unskilled worker can change the reception sensitivity to receive a signal in the optimal reception sensitivity band, A display unit for indicating the fuse 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, whether the sensing device is loaded, and the monitoring device The display unit for starting operation can be used to quickly find out whether or not a failure occurs and its location, so the convenience is very high, and the time for changing and setting the reception sensitivity is greatly shortened. There is no risk of confusion because there is no connection between and port.

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 signal receiver device in a railway signal system according to an embodiment of the present invention.

Referring to this, the signal receiver device 2 in the railway signal 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 and the receiver A display unit for indicating whether the 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 a receiver output voltage; By configuring the measuring point for measuring the relay output voltage 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 for unskilled workers. It is installed on the front and is grouped into three groups of switches that can receive different frequencies, Each switch group includes a revolver slot and a rotary terminal that is selectively connected to the revolver slot so that even unskilled workers can easily change the reception sensitivity of the receiver device. Device.

The signal receiver device 2 in the railway signal system according to an embodiment of the present invention is first provided with a housing 4 constituting the receiver device 2 incorporating circuits and various boards and chips, the enclosure ( On the 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 which can easily 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.

Therefore, the signal receiver device 2 in the railway signal system according to an embodiment of the present invention can easily recognize the fault location and the cause of the fault even by an unskilled person through 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 to easily determine whether the receiver device 2 is normally operated.

Particularly, in the present invention, the reception sensitivity setting switch 24a, 24b, or 24c of the receiver makes it possible to easily change the reception sensitivity of the receiver device even by unskilled workers. The rotation reception sensitivity setting switch 24a, 24b, 24c) is grouped into three groups of switches capable of receiving different frequencies.

At this time, the present invention consists of three switch groups that can change the reception sensitivity in the range of (9L, 9H, 0), (3L, 3H, 0), (1L, 1H, 0), each rotation type Receiving sensitivity setting switches 24a, 24b and 24c are formed, and by rotating the rotary receiving sensitivity setting switches 24a, 24b and 24c, it is possible to receive track signals from the track circuit while maintaining various receiving sensitivity. Will be.

Therefore, in the present invention, since the reception sensitivity setting switch 24a, 24b, and 24c can be used to easily change the reception sensitivity even for unskilled workers, the setting time is easy and the setting time for changing the reception sensitivity is easy. Will be shortened.

2 is a block diagram showing a circuit configuration of a signal receiver device in a railway signal system according to an embodiment of the present invention, Figure 3 is a signal receiver device in a railway signal system according to an embodiment of the present invention A circuit diagram showing a specific circuit configuration.

Referring to this, the signal receiver 2 in the railway signal system according to an embodiment of the present invention includes a reception sensitivity setting unit 24a, 24b, 24c, an input transformer 30, a high pass filter. (32), low pass filter (34), amplifiers (36, 42), filters (38, 44), demodulators (40, 46), end gate (48), delay (50), The relay driving unit 52, the display panel 6, and the display control unit 54 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 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 supply 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.

On the other hand, by receiving the voltage, current, and frequency signals from the output terminal of the relay drive unit 52, the fuse display unit 8 and the receiver input power display unit (power supply) 12, monitoring device check unit 14, receiver power display unit A display control unit 54 for driving control of LED lighting of the (current) 10, the relay voltage display unit 20, and the relay operation state display unit 18 is provided. Since the reference resistor is provided inside the display controller 54, various display units are driven and controlled by comparing the applied voltage, current, and frequency signals with the reference resistance values.

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.

Figure 4 is a view showing the configuration of a rotary receiving sensitivity setting switch provided in the signal receiver device in a railway signal system according to an embodiment of the present invention, Figures 5a, 5b, 5c is an embodiment of the present invention Figure is a view showing the line connection state of the rotary receiving sensitivity setting switch provided in the signal receiver device in the railway signal system according to the.

Referring to this, the reception sensitivity setting switches 24a, 24b, and 24c provided in the present invention are connected to the primary windings of the input transformer 30, and the operation of the reception sensitivity setting switches 24a, 24b, and 24c is provided. Accordingly, the reception sensitivity value can be adjusted in various ways.

More specifically, the reception sensitivity setting switches 24a, 24b, and 24c are connected to the input transformer 30 to receive reception sensitivity (9L, 9H, 0) and (3L, It is connected to three switch groups that can be changed in the range of 3H, 0), (1L, 1H, 0), and according to each switch group, the revolver slot of slot 1 to slot 18 It is formed and rotatably configured in the center of the revolver slot (slot 1 to 6 slots, slots 7 to 12 slots, slots 13 to 18 slots according to each switch group) Rotating terminals 25a, 25b, and 25c which are electrically connected to each other are configured, and a key hole 29 is formed on the front surface of the rotatable terminals 25a, 25b and 25c.

Therefore, a key is inserted into the keyhole 29 of the rotary terminal 25c of the third switch 24c having the reception sensitivity of (9L, 9H, 0) among the reception sensitivity setting switches 24a, 24b, and 24c. When the rotatable terminal 25c is rotated, as shown in FIG. 5A, the rotatable terminal 25c connects slots 1 and 6, respectively, to select a sensitivity of 9H. The terminal 25c can be rotated to connect slots 3 and 4 to select 9L reception sensitivity, and slots 2 and 5 can also be connected to select 0 reception sensitivity, making it very easy even for unskilled workers. The reception sensitivity can be changed and set.

If the rotary terminal 25c of the third switch 24c connects slots 3 and 4 to select 9L reception sensitivity, the first and second switches 24a and 24b are 7, 12 and 14, respectively. , The rotary terminals 25a and 25b are rotated to select slot 17 so that the reception sensitivity is maintained at 0.

On the other hand, the signal receiver device in the railway signal system according to an embodiment of the present invention is not limited to the above embodiment, but various modifications are possible without departing from the technical gist of the invention.

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

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

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

4 is a diagram illustrating a configuration of a reception sensitivity setting switch included in a signal receiver device in a railway signal system according to an embodiment of the present invention;

5A, 5B, and 5C are diagrams illustrating a line connection state of a reception sensitivity setting switch provided in a signal receiver device in a railway signal 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 drive part, 54: display control part.

Claims (5)

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; A display panel connected to a circuit of the receiver device for displaying a driving state of the receiver device, and a display control part for controlling the LED lighting of the display panel by receiving voltage, current, and frequency signals from an output terminal of the relay driver. Signal receiver device in a railway signaling system, characterized in that configured. 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; Signal receiver device in a railway signaling system comprising a measuring port for measuring the receiver output voltage and the relay output voltage. The receiver of claim 1, wherein the reception sensitivity setting unit is connected to the primary winding of the input transformer so as to select three reception sensitivity values, and the six slots are connected in a circular shape. A signal receiver device in a railway signaling system, comprising a switch consisting of a rotatable terminal rotatably connected to a center portion of a slot for connecting any two slots of six slots to select a reception sensitivity value. The reception sensitivity value selectable using the reception sensitivity setting unit may be one of (9L, 9H, 0) and (3L, 3H, 0), (1L, 1H, 0) for each switch. A signal receiver apparatus in a railway signal system, characterized in that the reception sensitivity value can be selected. The signal receiver of claim 3, wherein the rotatable terminal is provided with a key hole for inserting a key in the center thereof.

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