Signal transmission system in railway station

Abstract

The invention relates to the technical field of railway communication, and provides a signal transmission system in a railway station, and the system comprises signal transmission equipment which is disposed at a mechanical insulation joint of a main line throat region in the station, and is used for achieving the signal transmission of two adjacent sections; the signal transmission devices are further arranged at mechanical insulation joints on the two sides of the in-station main track section and the center of the main track section and used for achieving signal transmission of the in-station main track section and signal transmission of sections adjacent to the in-station main track section; the signal transmission devices are further arranged at mechanical insulation joints on the two sides of the station inner side line track section and the center of the side line track section and used for achieving signal transmission of the station inner side line track section and signal transmission of sections adjacent to the station inner side line track section; and the signal transmission equipment is in wireless communication with the train control center, so that the train control center controls the signal transmission equipment. According to the invention, the number of devices of the existing in-station railway signal transmission system can be reduced.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of railway communication, and particularly relates to a signal transmission system within a railway station. Background Art

[0002] Currently, mechanical insulation is mainly adopted for in-station track circuits, and track sections are divided by mechanical insulation joints.

[0003] Existing ordinary-speed railway stations use 25Hz track circuits, and high-speed railway stations use integrated ZPW-2000 track circuits, both of which consist of indoor equipment and outdoor equipment. The transmitter, receiver, attenuation controller, and analog compensation network are indoors, and the receiver processes information of this section (as Figure 2 shown). The indoor equipment is connected to the outdoor track by cables.

[0004] For the existing information transmission within railway stations:

[0005] The main line throat area within the station, as a key node in the railway station, connects multiple different track sections. In the existing transmission method, the information in the main line throat area is mainly processed by laying a large number of cables to connect to indoor equipment. Signals of each adjacent section need to be separately transmitted to the indoor through cables, and then the indoor equipment analyzes, processes, and forwards these signals.

[0006] The information transmission in the main line track section within the station also depends on the collaborative work of indoor and outdoor equipment. The track circuit information on both sides and the center position of the main line track section needs to be transmitted to indoor equipment such as transmitters and receivers through cables. In this process, in order to achieve accurate information interaction, each track needs to be equipped with a complete set of equipment for information processing.

[0007] The information transmission method in the siding track section within the station is similar to that of the main line, and it also relies on cables to transmit the information of the outdoor track circuit to indoor equipment for processing. However, the usage frequency of the siding track is relatively lower than that of the main line, but it still needs to be equipped with complete information transmission and processing equipment, resulting in low utilization rate of the equipment and waste of resources. At the same time, since the siding track is usually far from the indoor equipment, the cable transmission distance is long, and the signal is more likely to be interfered and attenuated during transmission, further reducing the stability and reliability of information transmission. Once a fault occurs in the information transmission of the siding track, it may affect the smooth progress of tasks such as shunting operations and temporary train stops, reducing the overall efficiency of railway transportation.

[0008] In summary, the existing method requires laying a large number of equipment and a large number of cables, with high construction costs. At the same time, the cable is vulnerable to electromagnetic interference during signal transmission, reducing the stability and reliability of information transmission. Summary of the Invention

[0009] To solve the above problems, the present disclosure provides a signal transmission system within a railway station. By arranging signal transmission devices at the mechanical insulation joints in the throat area of the main line within the station, in the middle and on both sides of the main line track sections within the station, and in the middle and on both sides of the siding track sections within the station, it is possible to reduce the number of devices in the existing in-station railway signal transmission system and avoid cable failures at the same time.

[0010] The following are the technical details of the present invention:

[0011] A signal transmission system within a railway station, characterized in that it includes:

[0012] Signal transmission devices, which are arranged at the mechanical insulation joints in the throat area of the main line within the station and are used to realize signal transmission between two adjacent sections.

[0013] The signal transmission devices are also arranged at the mechanical insulation joints on both sides of the main line track sections within the station and at the center of the main line track sections, and are used to realize signal transmission of the main line track sections within the station and signal transmission with the sections adjacent to the main line track sections within the station.

[0014] The signal transmission devices are also arranged at the mechanical insulation joints on both sides of the siding track sections within the station and at the center of the siding track sections, and are used to realize signal transmission of the siding track sections within the station and signal transmission with the sections adjacent to the siding track sections within the station.

[0015] Among them, the signal transmission devices include a data sending module and a data receiving module, and the signal transmission devices communicate wirelessly with the train control center to realize the control of the signal transmission devices by the train control center.

[0016] Furthermore,

[0017] The signal transmission devices include:

[0018] A digital control unit, which includes a data sending module for 1 path and 2 data receiving modules, and is used to generate frequency shift signals and demodulate them to realize the sending and receiving of information.

[0019] A communication and power supply integrated module, which is electrically connected to the digital control unit and is used to communicate wirelessly with the train control center to realize the control of the digital control unit by the train control center and supply power to the digital control unit.

[0020] Furthermore,

[0021] One digital control unit is arranged at the mechanical insulation joint in the throat area of the main line within the station to realize the sending of information in this section and the receiving of information in the adjacent section, or the receiving of information in this section and the sending of information in the adjacent section.

[0022] Furthermore,

[0023] At the mechanical insulation joints on both sides of the main line track section in the station, two digital control units are respectively arranged, one of which is used to control the transmission of information of the main line track section, and the other is used to control the transmission and reception of information of adjacent sections;

[0024] One digital control unit is arranged at the center of the main line track section in the station, which is used to receive the information sent by the track circuit equipment on both sides of the main line track section.

[0025] Furthermore,

[0026] One digital control unit is respectively installed at the mechanical insulation joints on both sides of the siding track section in the station, which is used to realize the transmission of information of the siding track section in the station and the reception of information of adjacent sections;

[0027] One digital control unit is arranged at the center of the siding track section in the station, which is used to receive the information sent by the digital control units on both sides of the siding track section.

[0028] Furthermore,

[0029] The signal transmission device further includes: a redundancy switching unit, electrically connected to the digital control unit, which is used to realize the voltage switching and adjustment of the receiving end of the track circuit section, and realize the transmission voltage switching and voltage adjustment.

[0030] Furthermore,

[0031] The signal transmission device further includes: a lightning protection transformer, electrically connected to the redundancy switching unit, which is used to protect against lightning strikes.

[0032] Furthermore,

[0033] The signal transmission device further includes: a compensating resistor, electrically connected to the lightning protection transformer.

[0034] Furthermore,

[0035] The signal transmission device further includes:

[0036] An outdoor transmission unit, electrically connected to the compensating resistor and the railway rail, which is used to realize the matching connection of the railway rail impedance and the cable impedance.

[0037] Furthermore,

[0038] The compensating resistor, the lightning protection transformer, the redundancy switching unit, the digital control unit, and the communication power supply integration module are encapsulated in a housing.

[0039] Compared with the prior art, the present disclosure has the following advantages:

[0040] The present invention sets signal transmission devices at key positions on the railway, such as at the mechanical insulation joints and the center of sections in the throat area of the main line within the station, on the main line track sections, and on the siding track sections. These devices include data sending and receiving modules and communicate wirelessly with the train control center.

[0041] In the throat area of the main line, one digital control unit can achieve information interaction between two adjacent sections, reducing the number of devices; wireless communication avoids the use of a large number of cables and reduces the risk of cable failures; the devices in the main line track sections and siding track sections can process information of both their own sections and adjacent sections simultaneously, improving the utilization rate of the devices; at the same time, the devices in each key section directly transmit signals, optimizing the information transmission path, thus effectively solving the problems existing in the prior art and being able to meet the requirements of sending and receiving railway station information while canceling indoor devices.

[0042] Other features and advantages of the present disclosure will be described in the following specification, and some of them will become obvious from the specification or be understood by implementing the present disclosure. The objectives and other advantages of the present disclosure can be achieved and obtained through the structures pointed out in the specification, claims, and drawings. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 Shows a schematic diagram of the signal transmission system within a railway station of the present invention;

[0045] Figure 2 Shows a schematic diagram of the existing circuit system within a conventional railway station;

[0046] Figure 3 Shows a schematic diagram of the signal transmission device of the present invention. Detailed Embodiments

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.

[0048] The track circuit of the existing conventional speed station is composed of indoor equipment and outdoor equipment. The transmitter, receiver, attenuation controller and analog compensation network are indoors. The receiver processes the information of this section (such as Figure 2 Indoor equipment is connected to outdoor tracks via cables. To address the problems of excessive equipment, cable failure, and high system power consumption in existing railway station signal transmission, the present invention proposes a railway station signal transmission system. The technical solutions employed by the present invention to solve the technical problems are as follows:

[0049] A signal transmission system in a railway station, such as Figure 1 Shown, including:

[0050] Signal transmission equipment is installed at the mechanical insulation joint in the throat area of the main line in the station ( Figure 1 The leftmost section is used to realize signal transmission between two adjacent sections. (Currently, the track circuits in high-speed and conventional railway stations mainly use mechanical insulation joints to divide the track sections.)

[0051] Signal transmission equipment is also installed in the main track section of the station ( Figure 1 The mechanical insulation joints on both sides of the section on the right side of the main line throat area in the station and the center of the main line track section are used to realize signal transmission of the main line track section in the station and the signal transmission of the section adjacent to the main line track section in the station;

[0052] Signal transmission equipment is also installed in the lateral track section inside the station ( Figure 1 In the section above the main line section in the station, the mechanical insulation nodes on both sides and the center of the side line section are used to realize the signal transmission of the side line section in the station and the signal transmission of the section adjacent to the side line section in the station.

[0053] Among them, the signal transmission equipment includes:

[0054] 1) Digital control unit, including 1-way sending part (data sending module) and 2-way receiving part (data receiving module), used to generate frequency shift signal and demodulate it, control the sending (receiving) of this section and the receiving (sending) of the adjacent section. Figure 1 As shown, Figure 1 F represents the data sending part, and J represents the data receiving part.

[0055] The digital control unit is arranged at the mechanical insulation joint of the railway track. (In this arrangement, the distances from the digital control units of the sending and receiving channels to the outdoor transmission unit are equal, and the required cable lengths are also equal, so that the path lengths experienced by the sending and receiving signals during transmission are the same. When changing the direction, the distances from the sending and receiving signals to the outdoor transmission unit from the digital control unit do not change, and the attenuation characteristics of signal transmission will not change either, thus ensuring that the signals can be stably and accurately transmitted to the corresponding equipment without the signal amplitude changing due to the distance change.)

[0056] 2) The power supply and communication integration module, which is electrically connected to the digital control unit, is used to perform the following functions:

[0057] a. Conduct wireless communication with the train control center and transmit the control information sent by the train control center to the digital control unit to achieve the reception of direction information;

[0058] b. Supply power to the digital control unit;

[0059] c. Transmit the equipment operation status information to the train control center so that the train control center can timely grasp the working conditions of the track circuit system.

[0060] The power supply and communication integration module and the digital control unit are arranged in the housing.

[0061] The mechanical insulation joints at the main line throat area, the main line track sections within the station, and the siding track sections within the station are all outdoors, and the digital control unit communicates directly with the train control center through the power supply and communication integration module, so the original indoor equipment for communication is no longer needed.

[0062] Specifically:

[0063] One digital control unit is arranged at the mechanical insulation joint of the main line throat area within the station to realize the information sending of this section and the information receiving of the adjacent section, or the information receiving of this section and the information sending of the adjacent section.

[0064] The information sent and received in this section mainly includes track occupancy, section carrier frequency, low frequency, etc. On the other hand, this information will also be transmitted to the train control center in a wireless communication manner through the power supply and communication integration module electrically connected to the digital control unit, so that the train control center can more accurately grasp the section occupancy situation and further improve the safety and efficiency of railway transportation.

[0065] At the mechanical insulation joints on both sides of the main line track section within the station, two digital control units are respectively arranged. One is used to control the information sending of the main line track section, and the other is used to control the information sending and receiving of the adjacent section; one digital control unit is arranged at the center of the main line track section within the station to receive the information sent by the track circuit equipment on both sides of the main line track section.

[0066] At the mechanical insulation joints on both sides of the track section of the inner side line of the station, one digital control unit is installed respectively to realize the information transmission of the track section of the inner side line of the station and the information reception of the adjacent section; one digital control unit is set at the center of the track section of the inner side line of the station to receive the information sent by the digital control units on both sides of the side line track section.

[0067] The function of setting one transmission part and two reception parts in the digital control unit of the present invention lies in:

[0068] 1) Realize section information transmission: The digital control unit needs to realize the information transmission of this section and the information reception of the adjacent section, or reverse operation. One transmission part can send the signal of this section; the two reception parts receive the transmission information at both ends of the track section, and only one reception channel is used in the station throat section.

[0069] 2) Meet the information processing requirements of different track sections: The digital control units on both sides and at the center of the main line track section in the station, on both sides and at the center of the inner side line track section of the station, and in the station throat area have different divisions of labor. Two digital control units are set on both sides of the main line track section, and each uses one transmission part to control the information transmission of the main line track section. One digital control unit is set in the middle, and it uses two reception parts for section information reception. Digital control units with different functions work together through one transmission and two reception parts to process complex track information, ensuring the efficient utilization of the main line track and the safe operation of trains. Although the side line track section has a low usage frequency, it also requires comprehensive information transmission and reception. One digital control unit is set on both sides of the side line track and shared with the adjacent section. One digital control unit is set in the middle, and it uses two reception parts for section information reception. The configuration of the digital control unit can realize the transmission and reception of the information of this section, providing support for shunting operations and temporary train stops. One digital control unit is placed at the mechanical insulation joint of the main line throat area in the station, using one transmission and one reception to realize the train and occupancy inspection of the section, and at the same time, it can meet the requirements of changing the direction.

[0070] The signal transmission equipment of the present invention further includes:

[0071] 3) A redundant switching unit, electrically connected to the digital control unit, for realizing the voltage switching and adjustment of the receiving end of the track circuit section, and realizing the sending voltage switching and voltage adjustment.

[0072] 4) A lightning protection transformer, electrically connected to the redundant switching unit, for preventing overvoltages such as lightning from damaging the system equipment, and protecting the subsequent connected equipment from lightning strikes through lightning protection characteristics.

[0073] 5) A compensation resistor, electrically connected to the lightning protection transformer, is used to compensate for the impedance in the circuit, ensuring that the signal strength and shunt performance transmitted to the rail and other related devices meet the requirements and maintaining the normal working performance of the track circuit system.

[0074] 6) An outdoor transmission unit, electrically connected to the compensation resistor and the rail, is used to transmit and process track circuit signals in an insulated track circuit within the station.

[0075] 7) The power supply and communication integrated module, digital control unit, redundant switching unit, lightning protection transformer, and compensation resistor are centrally arranged in the trackside housing, and the outdoor transmission unit is arranged trackside to connect the electronic device housing and the rail.

[0076] The following are the technical effects of the present invention:

[0077] 1) A method of sharing a set of equipment for the two sections before and after the insulated joint is realized, which respectively controls and processes the information of the adjacent two sections (the existing method only processes its own section), reducing the number of equipment.

[0078] 2) The double-end coding and two-sending-one-receiving method is adopted for the main line tracks and siding tracks within the station. When the train turns back, it can also transmit information to the ground equipment.

[0079] 3) A signal transmission device for wireless communication with the train control center is used for signal transmission to realize the control of the signal transmission device by the train control center. The cable connection between the indoor and outdoor parts is cancelled, greatly reducing cable faults and system power.

[0080] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A signal transmission system within a railway station, characterized in that, Including: A signal transmission device, which is arranged at the mechanical insulation joint in the main line throat area of the station and is used to realize the signal transmission between two adjacent sections. The signal transmission device is also arranged at the mechanical insulation joints on both sides of the main line track section in the station and at the center of the main line track section, and is used to realize the signal transmission of the main line track section in the station and the signal transmission with the sections adjacent to the main line track section in the station. The signal transmission device is also arranged at the mechanical insulation joints on both sides of the siding track section in the station and at the center of the siding track section, and is used to realize the signal transmission of the siding track section in the station and the signal transmission with the sections adjacent to the siding track section in the station. Wherein, the signal transmission device includes a data sending module and a data receiving module, and the signal transmission device communicates wirelessly with the train control center to realize the control of the signal transmission device by the train control center.

2. The signal transmission system within a railway station according to claim 1, characterized in that, The signal transmission device includes: A digital control unit, which includes a data 1-way sending module and 2-way data receiving modules, and is used to generate a frequency-shift signal and demodulate it to realize the sending and receiving of information. A communication and power supply integrated module, which is electrically connected to the digital control unit, and is used to communicate wirelessly with the train control center, realize the control of the digital control unit by the train control center and supply power to the digital control unit.

3. A signal transmission system within a railway station according to claim 2, characterized in that, One digital control unit is arranged at the mechanical insulation joint in the main line throat area of the station to realize the information sending of this section and the information receiving of the adjacent section, or the information receiving of this section and the information sending of the adjacent section.

4. A signal transmission system within a railway station according to claim 3, characterized in that, At the mechanical insulation joints on both sides of the main line track section in the station, 2 digital control units are respectively arranged, where 1 is used to control the information sending of the main line track section, and the other 1 is used to control the information sending and receiving of the adjacent section. One digital control unit is arranged at the center of the main line track section in the station and is used to receive the information sent by the track circuit devices on both sides of the main line track section.

5. A signal transmission system within a railway station according to claim 4, characterized in that, At the mechanical insulation joints on both sides of the siding track section in the station, 1 digital control unit is respectively installed, and is used to realize the information sending of the siding track section in the station and the information receiving of the adjacent section. One digital control unit is arranged at the center of the siding track section in the station and is used to receive the information sent by the digital control units on both sides of the siding track section.

6. The signal transmission system in a railway station according to claim 2, characterized in that, The signal transmission device also includes: A redundant switching unit, which is electrically connected to the digital control unit, and is used to realize the voltage switching and adjustment of the receiving end of the track circuit section, and realize the sending voltage switching and voltage adjustment.

7. A signal transmission system within a railway station according to claim 6, characterized in that, The signal transmission device also includes: A lightning protection transformer, which is electrically connected to the redundant switching unit and is used to protect against lightning strikes.

8. A signal transmission system within a railway station according to claim 7, characterized in that, The signal transmission device also includes: A compensating resistor, which is electrically connected to the lightning protection transformer.

9. A signal transmission system within a railway station according to claim 8, characterized in that, The signal transmission device also includes: An outdoor transmission unit, which is electrically connected to the compensating resistor and the railway rail, and is used to realize the matching connection of the railway rail impedance and the cable impedance.

10. A signal transmission system within a railway station according to claim 9, characterized in that, The compensating resistor, the lightning protection transformer, the redundant switching unit, the digital control unit, and the communication and power supply integrated module are encapsulated in a housing.

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