A tunnel positioning system time management center device

Abstract

This utility model relates to the field of tunnel positioning systems, specifically to a time synchronization management center device for a tunnel positioning system. The device includes an outer shell assembled from a front panel, a rear panel, an upper shell, and a lower shell. The lower shell and rear panel are integrally formed to enhance rigidity. A PCB board and power module are modularly arranged within the internal cavity of the outer shell via mounting plates. The rear panel centrally houses 10M, BDC, and 1PPS time signal output ports, a 4G communication antenna interface, an RJ45 network port, an RS232 debugging serial port, a power socket, and a switch. The front panel features device and system status indicator lights, a fiber optic port, and a GNSS antenna interface. This invention, through its integrated structure and highly integrated interface design, solves the problems of poor environmental adaptability, limited functionality, and inconvenient maintenance of existing time synchronization devices. It boasts advantages such as robust structure, good sealing, abundant interfaces, and ease of installation and maintenance, providing a highly reliable and accurate time synchronization reference for tunnel positioning systems.

Description

Technical Field

[0001] This utility model relates to the field of tunnel positioning systems, specifically to a time synchronization management center device for a tunnel positioning system. Background Technology

[0002] During construction in enclosed spaces such as tunnels and underground utility tunnels, positioning systems based on technologies like UWB are typically deployed to achieve real-time and accurate location tracking of personnel, vehicles, and equipment. The high-precision operation of such systems heavily relies on a unified, stable, and highly accurate time reference. If the time of the various positioning base stations within the system is not synchronized, it will directly lead to significant errors in positioning calculations, failing to meet the management requirements for safe production.

[0003] Currently, common time synchronization solutions have significant shortcomings. While fiber optic time signal transmission offers high accuracy, its deployment in long-distance, structurally complex tunnels is costly and inflexible. While integrating GNSS (Global Navigation Satellite System) receiver modules into ordinary industrial computers or commercial servers reduces costs, these devices are often not designed for industrial environments and suffer from the following drawbacks: First, their mechanical structures are loose, lacking sufficient vibration resistance, dust and moisture protection, making stable operation in the harsh environment of tunnels difficult. Second, their interface configurations are limited, failing to simultaneously meet multiple needs such as time signal output, multi-mode communication (e.g., 4G, wired network), system status monitoring and debugging, resulting in poor scalability. Third, their internal layout is unreasonable, easily causing interference between power modules and core processing modules, and making maintenance inconvenient. Furthermore, existing equipment typically lacks convenient installation and handling designs and comprehensive lightning protection and grounding measures, posing risks to on-site engineering implementation and long-term safe operation.

[0004] Therefore, there is an urgent need in this field for a high-precision time management device that integrates high reliability, rich interfaces, modular structure and convenient maintenance, and can be specifically adapted to the special application scenarios of tunnels. Utility Model Content

[0005] The purpose of this invention is to provide a time synchronization management center device for a tunnel positioning system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a time synchronization management center device for a tunnel positioning system, including a housing and a PCB board and a power module disposed within a cavity formed by the housing.

[0007] The outer shell is assembled from a front panel, a rear panel, an upper shell, and a lower shell;

[0008] The lower housing and the rear panel are integrally formed; the upper housing is detachably covered by the lower housing, and the front panel is detachably installed on the lower housing at the end away from the rear panel, so as to form a cavity together.

[0009] As a further improvement to this technical solution, the two sides of the upper shell extend downward to form an upper shell plate, and the two sides of the lower shell extend upward to form a lower shell plate that is adapted to the upper shell plate; the upper shell plate is sleeved on the outside of the lower shell plate and connected by fasteners.

[0010] As a further improvement to this technical solution, the two sides of the front panel and the rear panel are bent inwards towards the housing to form mounting portions that mate with the ends of the upper housing and the lower housing, and are connected by fasteners.

[0011] As a further improvement to this technical solution, a PCB fixing plate is provided inside the cavity, the PCB fixing plate is fixed to the bottom wall of the lower housing, and the PCB board is mounted on the PCB fixing plate.

[0012] As a further improvement to this technical solution, a power module mounting plate is also provided inside the cavity. The power module mounting plate is fixed to the bottom wall of the lower housing, and the power module is mounted on the power module mounting plate.

[0013] As a further improvement to this technical solution, the rear panel is provided with multiple external interfaces, including a 10M data output port, a BDC data output port, a 1PPS data output port, a 4G communication antenna interface, an RS232 debugging serial port, a power socket, and a device power switch; the 10M data output port, the BDC data output port, the 1PPS data output port, and the 4G communication antenna interface are connected to the PCB board via radio frequency cables, and the RS232 debugging serial port is connected to the serial port on the PCB board.

[0014] As a further improvement to this technical solution, the power socket is connected to the input terminal of the power module, and the output terminal of the power module is connected to the PCB board via a power supply cable.

[0015] As a further improvement to this technical solution, a device grounding hole is also provided on the rear panel.

[0016] As a further improvement to this technical solution, the front panel is provided with device status indicator lights, system status indicator lights, device fiber optic port and GNSS antenna interface.

[0017] As a further improvement to this technical solution, handles are also provided at both ends of the outer side of the front panel.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. This utility model, through its robust frame formed by the integrated lower shell and rear panel, and the sleeve-type connection structure of the upper shell, greatly enhances the overall mechanical strength and sealing of the equipment, enabling it to effectively resist vibration, impact, dust, and moisture within the tunnel, ensuring long-term stable operation under harsh conditions. The specially designed grounding hole, connected to an external grounding wire, effectively prevents damage to the internal precision circuitry from static electricity accumulation and lightning surges, further improving the equipment's reliability and safety.

[0020] 2. This utility model highly integrates time synchronization, communication, and management functions. The rear panel centrally houses high-precision time signal output interfaces such as 10M, BDC, and 1PPS, as well as a 4G communication antenna interface, RJ45 network port, RS232 debugging serial port, and power management interface; the front panel features status indicator lights, a fiber optic port, and a GNSS antenna interface. This layout enables the device to simultaneously connect to satellite antennas, indoor fiber optic base stations, 4G networks, wired networks, and multiple positioning base stations, meeting diverse communication and signal transmission needs in the complex environment of tunnels, and offering extremely strong scalability.

[0021] 3. The front panel of this utility model is equipped with equipment status indicator lights and system status indicator lights, which can intuitively display the working status of the timing management center itself and the synchronization status of the entire tunnel positioning system, facilitating quick problem diagnosis by maintenance personnel. A handle on the outside of the front panel simplifies the handling and installation process. External power is supplied through a power socket and controlled by the equipment power switch, making operation simple and safe. Attached Figure Description

[0022] Figure 1 This is a perspective view of the overall structure of this utility model when placed vertically;

[0023] Figure 2 This is a perspective view of the overall structure of this utility model when it is laid horizontally.

[0024] Figure 3 This is a left view of the overall structure of this utility model;

[0025] Figure 4 This is a perspective view of the internal structure of this utility model.

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Front panel; 11. Indicator lights; 12. System status indicator lights; 13. Fiber optic port; 14. GNSS antenna interface; 15. RJ45 network port;

[0028] 2. Rear panel; 21. 10M data output port; 22. BDC data output port; 23. 1PPS data output port; 24. 4G communication antenna interface; 25. RS232 debugging serial port; 26. Power socket; 27. Power switch; 28. Equipment grounding hole;

[0029] 3. Upper housing; 31 Upper housing plate; 4. Lower housing; 41 Lower housing plate; 5. PCB board; 51 PCB mounting plate; 6. Power module; 61 Power module mounting plate; 7. Handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "one side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] Please see Figure 1-4 As shown, the outer shell structure is as follows:

[0034] The equipment casing is mainly assembled from a front panel 1, a rear panel 2, an upper shell 3, and a lower shell 4. The lower shell 4 and the rear panel 2 are integrally die-cast from galvanized carbon steel, forming a high-strength L-shaped main structure. The upper shell 3 extends downwards on both sides to form upper shell plates 31, and the lower shell 4 extends upwards on both sides to form lower shell plates 41. During assembly, the upper shell plates 31 are fitted over the lower shell plates 41 and secured with bolts, forming a good seal and mechanical connection. The front panel 1 is bolted to the front end of the lower shell 4, thus forming a sealed protective cavity together with the rear panel 2, upper shell 3, and lower shell 4.

[0035] Internal module installation:

[0036] On the inner side of the bottom wall of the lower housing 4, a PCB mounting plate 51 and a power module mounting plate 61 are provided, which are fixed by bolts. The core PCB board 5 is mounted on the PCB mounting plate 51, and the power module 6 is fixed on the power module mounting plate 61. This isolated mounting method helps with shock absorption and heat dissipation.

[0037] Interface configuration and function implementation:

[0038] Power supply and safety circuit: External power is supplied through the power socket 26 on the rear panel 2. A power switch 27 is connected in series in the circuit to control the power on and off of the entire device when external power is connected. The power module 6 converts the external input power into the operating voltage required by the various modules inside the device and supplies power to the PCB board 5 via power cables. A grounding hole 28 on the rear panel 2 is used to connect to an external grounding stake via a wire, providing reliable anti-static and lightning protection for the device.

[0039] Status Indicators: The front panel 1 is equipped with a device status indicator 11 and a system status indicator 12. The device status indicator 11 is used to indicate the power supply, fault, and other working status of the equipment in this time synchronization management center; the system status indicator 12 is used to indicate the time synchronization status, network connection status, and other system-level working status of the entire tunnel positioning system, which is convenient for operation and maintenance personnel to monitor remotely or on-site.

[0040] Communication and data interaction:

[0041] Satellite signal reception: The device connects an external GNSS receiving antenna to the GNSS antenna interface 14 on the front panel 1 via a feeder cable. This interface is connected to the satellite signal receiving module on the PCB board 5 to receive on-orbit satellite signals and obtain high-precision standard time.

[0042] Wired communication: The RJ45 network port 15 on the front panel 1 can communicate with the PCB board 5 via an external network cable. At the same time, the device can connect to the indoor satellite base station deployed in the tunnel via the fiber optic port 13 on the front panel 1 to send and receive data, and realize functions such as command issuance, system status monitoring, and time synchronization.

[0043] Wireless communication: The 4G communication antenna interface 24 connects to an external antenna and is connected to the wireless communication module built into the PCB board 5 to provide a wireless data link.

[0044] Time signal output: The high-precision time signal (such as 1PPS, 10MHz, BDC code, etc.) generated by PCB board 5 is connected to the corresponding 10M data output port 21, BDC data output port 22, and 1PPS data output port 23 on the rear panel 2 via RF cables, and distributed to the positioning base station in the tunnel.

[0045] In summary, the working principle of this solution is as follows:

[0046] After the device is powered on, the power module begins operation. It receives satellite signals through the GNSS antenna interface to lock onto a high-precision time reference. Simultaneously, it can receive auxiliary synchronization information via a 4G network or wired network (RJ45 Ethernet port / fiber optic port). The core PCB board 5 processes this information to generate stable and synchronized time signals. These signals are output to each base station of the entire tunnel positioning system through a dedicated interface on the rear panel, ensuring strict time synchronization across all base stations, thereby achieving accurate positioning. Maintenance personnel can monitor the device and system status via status indicator lights and the RS232 debugging serial port 25.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A time synchronization management center device for a tunnel positioning system, comprising a housing and a PCB board (5) and a power module (6) disposed within a cavity formed by the housing, characterized in that: The outer shell is assembled from a front panel (1), a rear panel (2), an upper shell (3), and a lower shell (4); The lower housing (4) and the rear panel (2) are integrally formed; the upper housing (3) is detachably covered on the lower housing (4), and the front panel (1) is detachably installed on the lower housing (4) away from the rear panel (2) to form a cavity together.

2. The tunnel positioning system timing management center equipment according to claim 1, characterized in that: The two sides of the upper shell (3) extend downward to form an upper shell plate (31), and the two sides of the lower shell (4) extend upward to form a lower shell plate (41) that is adapted to the upper shell plate (31); the upper shell plate (31) is sleeved on the outside of the lower shell plate (41) and connected by fasteners.

3. The tunnel positioning system timing management center equipment according to claim 2, characterized in that: The two sides of the front panel (1) and the rear panel (2) are bent inward to form mounting parts that cooperate with the ends of the upper housing (3) and the lower housing (4), and are connected by fasteners.

4. The tunnel positioning system timing management center equipment according to claim 1, characterized in that: A PCB fixing plate (51) is provided inside the cavity. The PCB fixing plate (51) is fixed to the bottom wall of the lower housing (4). The PCB board (5) is installed on the PCB fixing plate (51).

5. A tunnel positioning system timing management center device according to claim 1 or 4, characterized in that: The cavity is also provided with a power module mounting plate (61), which is fixed to the bottom wall of the lower housing (4), and the power module (6) is mounted on the power module mounting plate (61).

6. The tunnel positioning system timing management center equipment according to claim 1, characterized in that: The rear panel (2) is provided with multiple external interfaces, including a 10M data output port (21), a BDC data output port (22), a 1PPS data output port (23), a 4G communication antenna interface (24), an RS232 debugging serial port (25), a power socket (26), and a device power switch (27). The 10M data output port (21), the BDC data output port (22), the 1PPS data output port (23), and the 4G communication antenna interface (24) are connected to the PCB board (5) via radio frequency cables, and the RS232 debugging serial port (25) is connected to the serial port on the PCB board (5).

7. The tunnel positioning system timing management center equipment according to claim 6, characterized in that: The power socket (26) is connected to the input terminal of the power module (6), and the output terminal of the power module (6) is connected to the PCB board (5) through a power supply cable.

8. The tunnel positioning system timing management center equipment according to claim 6, characterized in that: The rear panel (2) is also provided with a device grounding hole (28).

9. The time synchronization management center equipment for a tunnel positioning system according to claim 1, characterized in that: The front panel (1) is equipped with a device status indicator (11), a system status indicator (12), a device fiber optic port (13), a GNSS antenna interface (14), and an RJ45 network port (15).

10. A tunnel positioning system timing management center device according to any one of claims 1-9, characterized in that: The front panel (1) is also provided with handles (7) at both ends of its outer side.

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