KR20230139450A - Ultra wide band track circuit apparatus - Google Patents

Abstract

The present invention relates to a UWB orbital circuit device. By dividing the orbit and transmitting and receiving signal data using S-bonds, the frequency spectrum on orbit is widely distributed, thereby minimizing on-orbit loss and providing longer range signals than existing AF orbital circuit signals. The purpose is to provide a UWB orbital circuit device that can minimize equipment damage due to external influences such as lightning because it does not require parts such as tuning units or compensation condensers.

Description

UWB track circuit device {ULTRA WIDE BAND TRACK CIRCUIT APPARATUS}

The present invention relates to a UWB orbital circuit device. In more detail, the orbit is divided using S-bonds and signal data is transmitted and received, so that the frequency spectrum on orbit is widely distributed, thereby minimizing on-orbit loss and reducing the existing AF orbital circuit signal. It relates to a UWB orbital circuit device that can be transmitted over longer distances and does not require parts such as tuning units or compensation condensers, thereby minimizing equipment damage due to external influences such as lightning.

As is well known, signal security facilities for trains include on-site signal security devices that are located at railway sites and directly support the safe operation of trains, and Automatic Train Stop (ATS) devices to safely operate trains. ) and Automatic Train Control (ATC), and a comprehensive train operation control device that controls and manages the movement of all trains occurring at each site.

The on-site signal security device consists of an interlocking device, track circuit device, automatic blocking device, power device, signal device, and switch device.

The AF track circuit device (Audio Frequency Traffic Circuit) is a type of track circuit device that performs the function of detecting trains on the railroad.

Additionally, the automatic train control system (ATC) can be divided into on-board devices and ground devices, and the AF track circuit device is a device belonging to the above-mentioned ground devices.

The automatic train control system (ATC) protects the train from obstacles on the track and vehicles running ahead that interfere with train operation, and safely decelerates or stops the train despite the driver's carelessness or mistake. It is a device that prevents accidents in advance and directly controls the operating speed of the train by receiving and decoding operating information transmitted from the railroad.

Therefore, the AF track circuit device reviews the train operation conditions on the ground and performs the function of transmitting the operation command signal necessary for the operation of the train from the ground (device) to the onboard (device) when there is no problem in train operation.

The AF track circuit device uses an audible frequency (16Hz to 20KHz), which is an AF (Audio Frequency) signal, and not only has a simple train detection function, but also displays the running interval with the train ahead, the indicated speed of the train, and vehicle operation information on the vehicle. It is a very important device that ensures safe train operation by ignoring the signal and reducing the speed of the incoming train by transmitting it to the onboard device and controlling the train's braking system.

This AF track circuit device is a circuit that grounds the presence or absence of a train by constructing an electrical circuit using both railroad tracks as conductors. It modulates the signal current with an audible frequency around 1 KHz with a modulator and transmits it, and selects among the modulated frequencies at the receiving end. It is a device that operates an orbital relay by amplifying and rectifying the relevant frequency with an amplifier.

The AF track circuit device is a device that detects trains using AF signals and largely consists of a transmitter that electrically separates the tracks, tuning units on the transmitting and receiving sides, a receiver, and a track relay.

A single track is formed so that electrical signals can be transmitted directly to the track between tuning units, and when a train enters the track section in that state, the AF signal output from the transmitter is not transmitted to the receiver by the train's wheels. The orbital relay falls.

Then, when the train leaves the corresponding section, the AF signal transmitted from the transmitter is transmitted to the receiver, and when the receiver detects the corresponding frequency, it excites the track relay.

Through this, the AF track circuit detects the occupancy status of each section of the train.

However, since the signal of the existing AF (audio frequency) track circuit can only be transmitted along the track for a total length of 800 meters, an AF circuit device is constructed that detects the track condition at intervals of 800 meters not only within the station, but also throughout the entire track between stations. It is done. Therefore, there was a problem that the facility construction and maintenance costs of the AF orbital circuit device were enormous.

Therefore, as an alternative, an axle counter device that detects the passing state of a wheel through a sensor has been widely used recently.

However, since this axle counter is a device that detects the wheel using one rail, if the rail is broken or there is an accident where it is cut in the middle, vehicle occupancy information cannot be obtained, and there is a risk that a large-scale vehicle accident may occur as a result. .

In particular, considering that there have been accidents where the rails are naturally cut due to old age, there was a problem that the axle counter could also be used only as a part of redundancy or double check.

Meanwhile, the existing AF (audio frequency) orbital circuit device transmits audible frequency signals directly to the orbital track, so parts such as tuning units and compensation condensers are required, so installation and construction work is required, and continuous maintenance is required even after construction. is needed, and due to the increase in parts, there was a problem that equipment was frequently damaged due to external influences such as lightning.

The present invention was made in consideration of the circumstances of the prior art described above. By dividing the orbit and transmitting and receiving signal data using S-bonds, the frequency spectrum on the orbit is widely distributed, thereby minimizing the loss on the orbit and reducing the existing AF orbit circuit. The purpose is to provide a UWB orbital circuit device that can be transmitted over a longer distance than a signal and does not require components such as a tuning unit or compensation condenser, thereby minimizing equipment damage due to external influences such as lightning.

In order to achieve the above object, according to a preferred embodiment of the present invention, an S-Bond (3) is installed to be spaced apart from each other in a predetermined portion of the track (4) and is configured for magnetic coupling and track splitting; A transmission loop (8) and a reception loop (6) configured to transmit and receive electromagnetic wave signals respectively inside the S-Bond (3); By transmitting signals of different pulse patterns to the transmission loop (8), the trajectories are distinguished, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the orbits of different sections are configured through the reception loop (6). A UWB track circuit device is provided, which is comprised of a UWB detection circuit device (10) that receives a pulse signal transmitted from the transmission loop (8) and performs processing for train occupancy/unoccupancy.

Preferably, the UWB detection circuit device 10 includes a single transmitter 12 therein which transmits a pulse signal in both directions of the orbit; A UWB orbital circuit device is provided, wherein a plurality of receiving units 30A and 30B are respectively configured to receive pulse signals transmitted from both directions of the orbit.

Preferably, the transmitting unit 12 includes a signal separating unit 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 from the analog circuit of the receiving unit and the transmitting unit; a power generation unit 16 that receives the signal from the signal separation unit 14 and generates power to send the UWB output to the transmission loop 8; a first monitoring unit (22) that monitors the power and voltage generated by the power generating unit (16); A signal conversion unit 18 that changes the digital code generated by the transmission and reception control unit 40 into a UWB signal; A signal generation unit 20 that generates the UWB signal received from the signal conversion unit 18 into a transmission loop 8; A UWB track circuit device is provided, characterized in that it includes a second monitoring unit 24 that receives feedback from the signal generator 20 on the signal transmitted to the transmission loop 8 and monitors the transmission output.

Preferably, the receiving unit 30 includes a signal separation unit 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 from the analog circuit of the reception unit and the transmitter; a filtering unit 32 for removing noise from the reception level and UWB data signal applied through the reception loop 6 and filtering the reception signal from other detection circuits; a rectification unit 34 that detects the level of the received signal filtered by the filtering unit 32; an AD converter 36 that converts the DC signal rectified in the rectifier 34 into an analog signal so that the level of the signal can be measured; A UWB track circuit device is provided, which includes the data recovery unit 38 configured to recover UWB data from a received signal and confirm the original signal.

Preferably, the UWB detection circuit device 10 has a transmission output control/reception level monitoring, UWB data information monitoring and code conversion processing, and information processing on train occupancy/unoccupancy status controlled therein. a control unit 40; a display unit 42 for monitoring key operation status, information processing status, and setting status; A UWB track circuit device is provided, characterized in that it further includes a control operation unit 44 for inputting a control key signal to the transmission/reception control unit 40.

Preferably, the UWB track circuit device is provided, wherein the track 4 is set in the UWB detection circuit device 10 so that 64 different codes can be used for each section of the track.

Preferably, a UWB track circuit device is provided, wherein the train occupied/unoccupied status information of the track detected from the UWB detection circuit device 10 is transmitted to a higher ground device through a redundant LAN of a separate transmission module. .

Since the UWB orbital circuit device according to the present invention uses S-bond, it is resistant to lightning or ground faults by combining electric and magnetic fields, and the power consumption is about 30% cheaper than the AF orbital circuit, and the orbital circuit device has a long detection distance. Since it can be installed at wide intervals, it has the advantage of being significantly more economical in terms of installation costs as well as maintenance costs.

1 is a diagram schematically showing a UWB orbital circuit device according to an embodiment of the present invention;
Figure 2 is a diagram showing a UWB orbital circuit device according to an embodiment of the present invention;
Figure 3 is a block diagram showing the configuration of a detection circuit device included in the UWB track circuit device according to an embodiment of the present invention;
FIG. 4 is a diagram showing the outside of the detection circuit device panel of FIG. 3.

Hereinafter, the present invention will be described in detail with reference to the drawings.

Figure 1 is a diagram schematically showing a UWB orbital circuit device according to an embodiment of the present invention, Figure 2 is a diagram showing a UWB orbital circuit device according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. FIG. 4 is a block diagram showing the configuration of a detection circuit device included in a UWB track circuit device according to an example. FIG. 4 is a diagram showing the outside of the detection circuit device panel of FIG. 3.

Referring to this, the UWB orbital circuit device 2 according to an embodiment of the present invention divides the orbit using an S-bond and transmits and receives signal data, so that the frequency spectrum on orbit is widely distributed, thereby minimizing on-orbit loss. It is a device that can be transmitted over longer distances than existing AF orbital circuit signals, and does not require parts such as tuning units or compensation condensers, minimizing equipment damage due to external influences such as lightning.

In more detail, the UWB track circuit device (2) according to an embodiment of the present invention includes an S-Bond (3) that is installed to be spaced apart from each other in certain portions of the track (4) and is configured for magnetic coupling and track division. ; A transmission loop (8) and a reception loop (6) configured to transmit and receive electromagnetic wave signals respectively inside the S-Bond (3); By transmitting signals of different pulse patterns to the transmission loop (8), the trajectories are distinguished, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the orbits of different sections are configured through the reception loop (6). It consists of a UWB detection circuit device (10) that receives the pulse signal transmitted from the transmission loop (8) and performs processing on train occupancy/unoccupancy.

The UWB orbital circuit device (2) according to an embodiment of the present invention is a type of detection circuit device using Ultra Wide Band technology, and the frequency spectrum on orbit is widely distributed, so it is better than the AF orbital circuit device that is widely used to date. It is a new detection circuit device that can minimize phase loss and is suitable for long-distance orbits.

In addition, the UWB track circuit device 2 according to an embodiment of the present invention is a track circuit device based on the pulse stream transmission method, and is a system designed to distinguish tracks by using different pulse patterns as effective signals for each track circuit. am.

In addition, the UWB track circuit device 2 according to an embodiment of the present invention, unlike existing track circuits, does not directly transmit/receive signals to the track, but uses a transmission/reception method using Magnetic Coupling. , Installation and maintenance are easy because there is no need for tuning units and compensation condensers of existing track circuit devices.

Meanwhile, the installation form of the UWB orbital circuit device (2) according to an embodiment of the present invention is similar to the existing AF orbital circuit device, but the interface between the transmission and reception module and the orbit does not use a tuning unit and uses an S-Bond (3). It is different in that you use to divide the orbit and send and receive signal data.

And by using the orbital connection method using the Electro-Magnetic Coupling method (Loop Antenna), equipment damage due to external influences such as lightning or ground faults can be minimized. In addition, 64 different codes are used for each orbit to ensure clear independence between orbits, and the operating distance can be detected up to 5 km.

In more detail, the S-Bond (3) configured in the UWB track circuit device (2) according to an embodiment of the present invention serves as a reference point for dividing each section, and the S-Bond (3) and the neighboring S-Bond (3) are Bonds (3) are each installed several kilometers apart.

Inside the S-Bond (3), a transmission loop (8) and a reception loop (6) are configured to transmit and receive electromagnetic wave signals, respectively. The transmission loop (8) is connected to a single transmitter (12). On the other hand, the receiving loop 6 is composed of a plurality of receiving units 30A and 30B to receive signals transmitted in both directions.

In addition, the S-Bond (3) distinguishes trajectories by transmitting signals of different pulse patterns to the transmission loop (8), transmits the transmitted pulse signal so that it can be received by a specific receiving unit, and transmits the receiving loop (8). Through 6), the UWB detection circuit device 10 (10A, 10B), which receives the pulse signal transmitted from the transmission loop 8 configured in another section of track and performs processing for train occupancy/unoccupancy, is connected. .

At this time, the transmission signal of the first UWB detection circuit device 10A is applied to the reception loop (Rx2 Loop: 6b) of the second UWB detection circuit device 10A through the orbit.

Meanwhile, in the present invention, the occupied or unoccupied status information of the track detected through the UWB detection circuit device 10 (10A, 10B) is transmitted to the upper device through the redundant LAN (not shown) of its own transmission module (not shown). It is preferable that it is configured to be transmitted.

Hereinafter, the UWB detection circuit device 10 will be described in detail.

First, the UWB detection circuit device 10 includes a single transmitter 12 therein that transmits pulse signals in both directions of the orbit; A plurality of receiving units 30A and 30B are respectively configured to receive pulse signals transmitted from both directions of the orbit.

The transmitting unit 12 includes a signal separation unit 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 from the analog circuit of the receiving unit and the transmitting unit; a power generation unit 16 that receives the signal from the signal separation unit 14 and generates power to send the UWB output to the transmission loop 8; a first monitoring unit (22) that monitors the power and voltage generated by the power generating unit (16); A signal conversion unit 18 that changes the digital code generated by the transmission and reception control unit 40 into a UWB signal; A signal generation unit 20 that generates the UWB signal received from the signal conversion unit 18 into a transmission loop 8; It is configured to include a second monitoring unit 24 that receives feedback from the signal generator 20 on the signal transmitted to the transmission loop 8 and monitors the transmission output.

In addition, the UWB detection circuit device 10 has a transmission/reception control unit inside it, which controls transmission output adjustment/reception level monitoring, UWB data information monitoring and code conversion processing, and information processing regarding train occupancy/unoccupancy status. (40) and; a display unit 42 for monitoring key operation status, information processing status, and setting status; A control operation unit 44 for inputting a control key signal to the transmission/reception control unit 40 is further included.

At this time, the signal separator 14 uses a digital isolator to minimize the noise effect between each block.

As shown in FIG. 3, the transmission unit 12 is configured to control transmission output, code conversion, and monitor status information in the transmission and reception control unit 40, and is electrically separated and interfaces with the transmission and reception control unit 40. It can be done, and the output is transmitted to orbit through the transmission loop (8).

In particular, the transmitter 12 can adjust the output level generated by the power generator 16 according to the orbit length, monitor the output level through the display unit 42, and send the output code to the second monitor. It can be monitored through (24).

Meanwhile, the receiving unit 30 configured according to the present invention includes a signal separator 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 and the analog circuit of the receiving unit and the transmitting unit; a filtering unit 32 for removing noise from the reception level and UWB data signal applied through the reception loop 6 and filtering the reception signal from other detection circuits; a rectification unit 34 that detects the level of the received signal filtered by the filtering unit 32; an AD converter 36 that converts the DC signal rectified in the rectifier 34 into an analog signal so that the level of the signal can be measured; It consists of the data recovery unit 38 configured to recover UWB data from the received signal and check the original signal.

At this time, the receiving unit 30 is configured to monitor the reception level and UWB data information in the transmission and reception control unit 40, and is electrically separated to interface with the transmission and reception control unit 40, and the reception loop ( The reception level and UWB data approved through 6) are standardized through the filtering unit 32 and then transmitted to the transmission/reception control unit 40 through the A/D conversion unit 36.

Meanwhile, the receiver 30 can configure a relay contact linked with the transmission/reception control unit 40 to communicate with other devices in order to convey the occupied or unoccupied status of the train to other devices, and can interface with other devices on the front panel. You can adjust the receiving output.

Therefore, since the UWB orbital circuit device 2 according to an embodiment of the present invention uses S-bond, it is resistant to lightning or ground faults by combining electric and magnetic fields, and its power consumption is about 30% cheaper than that of the AF orbital circuit. Because the distance is long, track circuit devices can be installed at wide intervals, making it extremely economical in terms of not only installation costs but also maintenance costs.

Meanwhile, the UWB track circuit device according to the embodiment of the present invention is not limited to the above-described embodiment, and various changes are possible without departing from the technical gist.

2:UWB orbital circuit device, 3:S-Bond,
4: Orbit, 6a, 6b: Receiving loop,
8: Transmission loop, 10: UWB detection circuit device,
12: Transmitting unit, 14: Signal separation unit,
16: power generation unit, 18: signal conversion unit,
20: signal generator, 30: receiver,
32: filtering unit, 34: rectification unit,
36: AD signal conversion unit, 38: Data recovery unit,
40: Transmission and reception control unit, 42: Display unit,
44: Control operation unit.

Claims (7)

S-Bonds (3) installed to be spaced apart from each other in certain portions of the orbit (4) and configured for magnetic coupling and orbital division;
A transmission loop (8) and a reception loop (6) configured to transmit and receive electromagnetic wave signals respectively inside the S-Bond (3);
By transmitting signals of different pulse patterns to the transmission loop (8), the trajectories are distinguished, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the transmitted pulse signal is transmitted so that it can be received by a specific receiver, and the orbits of different sections are configured through the reception loop (6). A UWB track circuit device comprising a UWB detection circuit device (10) that receives a pulse signal transmitted from the transmission loop (8) and performs processing for train occupancy/unoccupancy. According to clause 1,
The UWB detection circuit device 10 includes a single transmitter 12 therein that transmits pulse signals in both directions of the orbit;
A UWB orbital circuit device comprising a plurality of receiving units (30A, 30B) for receiving pulse signals transmitted from both directions of the orbit. According to clause 2,
The transmitting unit 12 includes a signal separation unit 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 from the analog circuit of the receiving unit and the transmitting unit;
a power generation unit 16 that receives the signal from the signal separation unit 14 and generates power to send the UWB output to the transmission loop 8;
a first monitoring unit (22) that monitors the power and voltage generated by the power generating unit (16);
A signal conversion unit 18 that changes the digital code generated by the transmission and reception control unit 40 into a UWB signal;
A signal generation unit 20 that generates the UWB signal received from the signal conversion unit 18 into a transmission loop 8;
A UWB track circuit device characterized by comprising a second monitoring unit (24) that receives feedback from the signal generator (20) on the signal transmitted to the transmission loop (8) and monitors the transmission output. According to clause 2,
The receiving unit 30 includes a signal separation unit 14 therein for separating the digital circuit configured in the transmission and reception control unit 40 from the analog circuit of the reception unit and the transmitter;
a filtering unit 32 for removing noise from the reception level and UWB data signal applied through the reception loop 6 and filtering the reception signal from other detection circuits;
a rectification unit 34 that detects the level of the received signal filtered by the filtering unit 32;
an AD converter 36 that converts the DC signal rectified in the rectifier 34 into an analog signal so that the level of the signal can be measured;
A UWB track circuit device comprising the data recovery unit (38) configured to recover UWB data from a received signal and check the original signal. According to clause 1,
The UWB detection circuit device 10 has a transmission/reception control unit (40) inside it that controls processing for transmission output adjustment/reception level monitoring, UWB data information monitoring, and code conversion, and information processing on train occupancy/unoccupancy status. )and;
a display unit 42 for monitoring key operation status, information processing status, and setting status;
The UWB track circuit device further includes a control operation unit 44 for inputting a control key signal to the transmission/reception control unit 40. According to clause 1,
The UWB track circuit device is characterized in that the track (4) is set in the UWB detection circuit device (10) so that 64 different codes can be used for each section of the track. According to clause 1,
A UWB track circuit device, characterized in that the train occupancy/unoccupancy status information of the track detected from the UWB detection circuit device (10) is transmitted to a higher ground device through a redundant LAN of a separate transmission module.