Railway signal transmission equipment, method and system

Abstract

The invention relates to the technical field of railway communication, and provides railway signal transmission equipment, method and system, and the equipment comprises a digital control unit which is arranged at a mechanical insulation joint or an electrical insulation joint of a railway track; the digital control unit comprises a one-path data sending module and a one-path data receiving module and is used for generating and demodulating a frequency shift signal to realize information sending of the section and information receiving of the adjacent section, or information receiving of the section and information sending of the adjacent section; and the communication and power supply integrated module is electrically connected with the digital control unit and is used for performing wireless communication with a train control center, so that the train control center controls the digital control unit and supplies power to the digital control unit. According to the invention, the number of devices of the existing railway signal transmission system can be reduced.

Description

Technical Field

[0001] This disclosure belongs to the field of railway communication technologies, and particularly relates to a railway signal transmission method and system. Background Art

[0002] Currently, the track circuit between stations mainly adopts the electrical insulation method, and the track sections are divided by electrical insulation joints.

[0003] The existing track circuit system consists of indoor and outdoor parts. The transmitter, receiver, attenuation controller, and analog compensation network are indoors, and the receiver processes the information of this section (as Figure 3 、 Figure 4 shown). The indoor equipment is connected to the outdoor track through cables.

[0004] However, since the information of each track section requires a set of equipment placed indoors to process, this method requires a large number of equipment, and the cables connecting the indoor equipment and the outdoor track are prone to cable faults. Summary of the Invention

[0005] To solve the above problems, this disclosure provides a railway signal transmission device, method, and system. By arranging the digital control unit at the mechanical insulation joint or electrical insulation joint of the railway track to send the information of this section and receive the information of the adjacent section, or receive the information of this section and send the information of the adjacent section, the number of equipment can be reduced, and cable faults and system power can be reduced.

[0006] The following are the technical details of the present invention:

[0007] A railway signal transmission device, characterized by comprising:

[0008] A digital control unit, arranged at the mechanical insulation joint or electrical insulation joint of the railway track; the digital control unit includes a 1-channel data sending module and a 1-channel data receiving module, which are used to generate frequency shift signals and perform demodulation 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;

[0009] A communication and power supply integration module, electrically connected to the digital control unit, which is used to perform wireless communication 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.

[0010] Further,

[0011] It further includes:

[0012] A redundant 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, realize the sending voltage switching, and the adjustment of the main track and the small track.

[0013] Further,

[0014] It further includes:

[0015] A lightning protection transformer, electrically connected to the redundant switching unit, for protecting against lightning strikes introduced from outdoors into the indoor area.

[0016] Further,

[0017] It further includes:

[0018] A compensating resistor, electrically connected to the lightning protection transformer.

[0019] Further,

[0020] It further includes:

[0021] A tuning and matching unit, electrically connected to the compensating resistor and the railway rail, for achieving the matching connection between the impedance of the railway rail and the impedance of the cable.

[0022] Further,

[0023] The compensating resistor, lightning protection transformer, redundant switching unit, digital control unit, and communication and power supply integration module are encapsulated in a housing.

[0024] Further,

[0025] The digital control unit is arranged at the hollow coil of the mechanical insulation joint or electrical insulation joint of the railway track.

[0026] Further,

[0027] The digital control unit is arranged at the tuning and matching unit where the signal lamp beside the rail is located.

[0028] A railway signal transmission method, characterized by including:

[0029] Transmitting the information of this section and receiving the information of the adjacent section, or receiving the information of this section and transmitting the information of the adjacent section, at the mechanical insulation joint or electrical insulation joint of the railway track.

[0030] A railway signal transmission system, characterized by including:

[0031] An information transmission module, for transmitting the information of this section and receiving the information of the adjacent section, or receiving the information of this section and transmitting the information of the adjacent section, at the mechanical insulation joint or electrical insulation joint of the railway track.

[0032] Compared with the prior art, the present disclosure has the following advantages:

[0033] The digital control unit is used to send information in this section and receive information in the adjacent section, or receive information in this section and send information in the adjacent section, so as to realize the information transmission function of two sections with one set of equipment, which can reduce the number of equipment used.

[0034] Moreover, since the communication module electrically connected to the digital control unit communicates wirelessly with the train control center, wireless control of the digital control unit by the train control center can be realized, avoiding the use of a large number of cables connecting indoor equipment and outdoor tracks, and significantly reducing the probability of cable failures.

[0035] Other features and advantages of the present disclosure will be described in the following specification, and in part will be obvious from the specification, or will be understood by implementing the present disclosure. The objectives and other advantages of the present disclosure can be achieved and obtained by the structures pointed out in the specification, claims and drawings. Brief Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or 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.

[0037] Figure 1 Shows a schematic diagram of the installation of the device of the present invention at the electrical insulation joint;

[0038] Figure 2 Shows a schematic diagram of the installation of the device of the present invention at the mechanical insulation joint;

[0039] Figure 3 Shows a structural diagram of the existing inter-block electrical insulation joint - electrical insulation joint track circuit system;

[0040] Figure 4 Shows a structural diagram of the existing inter-block mechanical insulation joint - electrical insulation joint track circuit system. Detailed Description of the Embodiments

[0041] 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 without creative efforts based on the embodiments of the present disclosure belong to the scope of protection of the present disclosure.

[0042] To solve the problems of excessive equipment quantity, cable faults, and high system power in railway signal transmission, the present invention proposes a railway signal transmission device, method, and system. The technical solution adopted by the present invention to solve its technical problems is as follows:

[0043] A railway signal transmission device, as Figures 1-2 shown, includes:

[0044] 1) A digital control unit, which contains 1 sending part and 1 receiving part, and controls the sending (receiving) of the present section and the receiving (sending) of the adjacent section. The digital control unit is arranged at the hollow coil of the mechanical insulation joint or electrical insulation joint of the railway track. (With this layout method, the distances from the digital control unit to the tuning matching units at both ends are equal, and the required cable lengths are also equal, and this method is not affected.) Or placed at the tuning matching unit where the signal lamp is located, and the electronic device is at the same position as the signal lamp. (Facilitating installation and maintenance)

[0045] 2) A power supply and communication integration module, which is electrically connected to the digital control unit. It is used to perform the following functions:

[0046] 1. 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;

[0047] 2. Supply power to the digital control unit;

[0048] 3. Transmit the device 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.

[0049] The power supply and communication integration module and the digital control unit are arranged in the housing.

[0050] The track circuit system of the present invention further includes:

[0051] 3) A redundancy 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, realize the sending voltage switching, and the adjustment of the main rail and the small rail.

[0052] 4) A lightning protection transformer, which is electrically connected to the redundancy switching unit and is used to prevent overvoltages such as lightning from damaging the system equipment, and protect the subsequent connected equipment from lightning strikes through lightning protection characteristics.

[0053] 5) A compensating resistor, which is electrically connected to the lightning protection transformer and is used to compensate the impedance in the circuit, ensure that the signal strength and shunt performance transmitted to the rail and other related equipment meet the requirements, and maintain the normal working performance of the track circuit system.

[0054] 6) Tuning and matching unit, electrically connected to the compensation resistor and the rail, used to achieve efficient matching and transmission of signals between different devices and transmission media. The matching unit, i.e., the matching transformer, realizes the matching connection between the rail impedance and the cable impedance; the tuning unit is used at the electrical insulation joints and mechanical insulation joints of the non-insulated track circuit, forming a series resonance for the frequency-shift signals of adjacent sections, presenting zero impedance, and achieving electrical isolation of the signals of adjacent sections; for the frequency-shift signals of this section, it is capacitive, and forms a parallel resonance with the comprehensive inductance of the tuning section, presenting extremely high impedance, enabling the stable transmission of the frequency-shift signals of this section. The acquisition part realizes the current acquisition and temperature acquisition of the rail lead wire and the cable wire, and transmits them to the power supply and communication integration module.

[0055] The power supply and communication integration module, digital control unit, redundant switching unit, lightning protection transformer, and compensation resistor are centrally placed in the trackside housing, and the tuning and matching unit is placed at the trackside to connect the electronic device housing and the rail.

[0056] Technical effects:

[0057] 1) A method for sharing a set of equipment for the two adjacent sections in the interval is realized. It respectively controls and processes the information of the two adjacent sections (the existing method only processes the information of its own section), reducing the number of devices.

[0058] 2) The cable connection between the indoor and outdoor parts is cancelled, greatly reducing the cable faults and system power.

[0059] Based on the equipment of the present invention, the embodiments of the present disclosure also provide a method corresponding to the above equipment, including:

[0060] The digital control unit is arranged at the mechanical insulation joint or electrical insulation joint of the railway track; the digital control unit includes a data sending module and a data receiving module, which control 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;

[0061] The control information sent by the train control center is transmitted to the digital control unit through the wireless communication device to achieve the control of railway signal transmission.

[0062] Based on the method of the present invention, the embodiments of the present disclosure also provide a system corresponding to the above method. The railway signal transmission system of the present invention includes:

[0063] An information transmission module, used to send the information of this section and receive the information of the adjacent section, or receive the information of this section and send the information of the adjacent section at the mechanical insulation joint or electrical insulation joint of the railway track.

[0064] It should be noted that the electrical connections between the above-mentioned units do not necessarily represent the connections between the circuits. Indirect connection methods can be applied to the embodiments of the present disclosure as long as the purpose of the present disclosure is achieved.

[0065] 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 described 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 railway signal transmission device, characterized in that: include: A digital control unit is arranged at a mechanical insulation joint or an electrical insulation joint of the railway track; the digital control unit comprises a data transmission module and a data reception module, which are used to generate a frequency shift signal and perform demodulation, so as to realize information transmission in the current section and information reception in the next section, or information reception in the current section and information transmission in the next section; The communication and power supply integrated module is electrically connected to the digital control unit and is used for wireless communication with the train control center to realize the control of the digital control unit by the train control center and to supply power to the digital control unit.

2. A railway signal transmission device according to claim 1, characterized in that: Also includes: The redundant switching unit is electrically connected to the digital control unit and is used to realize the voltage switching and adjustment at the receiving end of the track circuit section, realize the sending voltage switching, and the adjustment of the main track and the small track.

3. A railway signal transmission device according to claim 2, characterized in that: Also includes: The lightning protection transformer is electrically connected to the redundant switching unit and is used to protect against lightning strikes introduced from the outdoors into the indoors.

4. A railway signal transmission device according to claim 3, characterized in that: Also includes: The compensation resistor is electrically connected to the lightning protection transformer.

5. A railway signal transmission device according to claim 4, characterized in that: Also includes: The tuning and matching unit is electrically connected to the compensation resistor and the railway rail, and is used to achieve a matching connection between the railway rail impedance and the cable impedance.

6. A railway signal transmission device according to claim 4, characterized in that: The compensation resistor, lightning protection transformer, redundant switching unit, digital control unit, and communication power supply integrated module are packaged in one housing.

7. The railway signal transmission device according to claim 1, characterized in that: The digital control unit is arranged at the air-core coil of the mechanical insulation section or the electrical insulation section of the railway track.

8. The railway signal transmission device according to claim 1, characterized in that: The digital control unit is arranged at the tuning and matching unit where the signal machine beside the rail is located.

9. A railway signal transmission method, characterized in that: include: At the mechanical insulation joint or electrical insulation joint of the railway track, information is sent in the current section and received in the next section, or information is received in the current section and sent in the next section.

10. A railway signal transmission system, characterized in that: include: The information transmission module is used to send information in the current section and receive information in the next section, or receive information in the current section and send information in the next section at the mechanical insulation joint or electrical insulation joint of the railway track.

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