Miniaturized Beidou time service time synchronization server device

Abstract

The utility model discloses a miniaturized Beidou time service time synchronization server device, which relates to the technical field of telecommunication, and comprises a Beidou satellite receiving module for performing time synchronization setting; an SNTP network time service chip; the programmable controller is used for receiving Beidou satellite module data, analyzing time information and position information in the data, and configuring the time information to the SNTP network time service chip after time zone compensation; and the power supply is used for supplying power to the Beidou satellite receiving module, the SNTP network time service chip and the programmable controller. According to the utility model, the single Beidou satellite system receiving module is utilized to carry out time synchronization without depending on a foreign satellite positioning system such as a GPS (Global Positioning System) and the like, so that the reliability is ensured. Meanwhile, the satellite event source is used, so that the accurate time source can be obtained on the premise of not accessing a public network, and external dependence is reduced. The system can be used in remote mountainous areas or local area networks where public networks cannot be accessed.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical communications, in particular to a miniaturized Beidou timing synchronization server device. Background Art

[0002] With the rapid development of information technology, time synchronization has become crucial in a variety of fields, including communications, finance, and the Internet of Things. Existing time synchronization technologies primarily rely on the Network Time Protocol (NTP) or its simplified version, SNTP. These protocols typically require connections to external time servers or GPS signals for time synchronization. However, these methods have limitations, such as reliance on external signals and synchronization accuracy limited by network latency and server performance.

[0003] Disadvantages of existing equipment:

[0004] External Dependency: Existing devices often rely on external time sources, such as GPS or public time servers. This can lead to synchronization failures when signal coverage is insufficient or the server is unavailable. This makes it unusable in remote mountainous areas where public network access is unavailable.

[0005] Synchronization accuracy: Due to the influence of network delay and data packet transmission time, the time synchronization accuracy of existing devices may not meet the requirements of high-precision time synchronization.

[0006] Device size and cost: Existing high-precision time synchronization devices are often large in size and high in cost, making them unsuitable for miniaturized or cost-sensitive application scenarios.

[0007] Flexibility and compatibility: Existing equipment has limited flexibility and compatibility in different application scenarios, making it difficult to quickly deploy and integrate. Utility Model Content

[0008] The purpose of the present invention is to provide a miniaturized Beidou timing synchronization server device to solve the problems raised in the above background technology.

[0009] To solve the above technical problems, the present invention provides the following technical solutions: a miniaturized Beidou time synchronization server device, comprising:

[0010] Beidou satellite receiving module for time synchronization settings;

[0011] SNTP network timing chip;

[0012] The programmable controller is used to receive data from the Beidou satellite module, parse the time and location information in the data, perform time zone compensation, and then configure the time information to the SNTP network timing chip;

[0013] Power supply, used to power the Beidou satellite receiving module, SNTP network timing chip and programmable controller.

[0014] Preferably, it also includes an Ethernet interface, and the SNTP network timing chip is connected to the local area network via the Ethernet interface.

[0015] Preferably, the Ethernet interface is an RJ45 Ethernet interface.

[0016] Preferably, an antenna is also included, and the antenna is a ceramic antenna, a helical antenna or a mushroom antenna.

[0017] Preferably, it also includes a housing, and the Beidou satellite receiving module, the SNTP network timing chip, the programmable controller and the antenna are all fixed inside the housing by bolts;

[0018] The Ethernet interface is fixedly mounted on the side wall of the housing;

[0019] A side plate is fixedly mounted on a vertical edge of a side of the housing where the Ethernet interface is provided;

[0020] An L-shaped guard plate is rotatably mounted on the edge of the upper end surface of the shell. The guard plate can be rotated downward and fit together with the side plate to form a dustproof chamber with an opening at the bottom.

[0021] Preferably, a rotating shaft is fixedly installed on the top of the guard plate; a rotating shaft seat is fixedly installed at the edge of the upper end surface of the shell, and the rotating shaft is rotatably connected to the rotating shaft seat.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This utility model utilizes a single Beidou satellite system receiving module for time synchronization, eliminating reliance on foreign satellite positioning systems like GPS, ensuring reliability. Furthermore, the use of a satellite event source enables accurate time source acquisition without accessing the public network, reducing external dependencies. It can be used in remote mountainous areas or within local area networks without public network access. Its compact hardware design makes the device small and lightweight, making it easy to carry and deploy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a system diagram of the utility model;

[0025] Figure 2 is a diagram showing the overall structure of the housing of the present invention;

[0026] Figure 3 is a structural diagram of the housing of the present invention;

[0027] Figure 4 shows the present invention Figure 3 Enlarged view of point A in the middle.

[0028] In the figure: 1. Housing; 2. Ethernet interface; 3. Side panel; 4. Guard plate; 5. Shaft seat. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Please refer to 1-2. This embodiment provides a miniaturized Beidou timing synchronization server device, including a shell 1. The shell 1 adopts a square tube metal shell, and the baffles on both sides adopt engineering plastics with sealant to improve the overall sealing performance of the shell 1.

[0031] The Beidou satellite receiving module, network timing chip, programmable controller and antenna are fixedly installed inside the shell 1 by bolts, and the Ethernet interface 2 is fixedly installed on the front side of the shell 1.

[0032] In this embodiment, the Beidou receiver module uses the Quectel LC761Z, a single-frequency Beidou satellite positioning module. It belongs to the Global Navigation Satellite System (GNSS) module and is designed to provide fast and accurate positioning services. It has the following features:

[0033] Multi-system support: The LC761Z module supports multiple satellite systems including Beidou, and can achieve multi-system joint positioning and single-system independent positioning.

[0034] High-performance positioning: The module is designed to provide a high-performance positioning experience, maintaining stable and accurate positioning even in complex environments such as urban canyons.

[0035] Low power design: The LC761Z module focuses on low power design and is suitable for long-term operation on portable or mobile devices.

[0036] AGNSS function: Supports Assisted Global Navigation Satellite System (A-GNSS) function, which can significantly reduce the first positioning time.

[0037] Built-in filter: The module has a built-in low-noise amplifier (LNA) and surface acoustic wave filter (SAW filter) to improve receiving sensitivity and signal quality.

[0038] Fast startup: The LC761Z module has fast startup capability and short hot start time, providing users with rapid positioning services.

[0039] High-precision positioning: The module can provide high-precision positioning services, with an accuracy usually within a few meters.

[0040] Compact package design: The LC761Z module adopts a compact package design, which is easy to integrate into various devices.

[0041] The programmable controller uses the CH552G chip, which is an enhanced E8051 core microcontroller compatible with the MCS51 instruction set.

[0042] Core performance: 79% of instructions are single-byte, single-cycle instructions, and the average instruction speed is 8 to 15 times faster than the standard MCS51.

[0043] System main frequency: supports a maximum system main frequency of 24MHz.

[0044] Memory: Built-in 16KB program memory ROM, 256 bytes internal iRAM and 1K bytes on-chip xRAM, xRAM supports DMA direct memory access.

[0045] Peripherals: built-in ADC analog-to-digital converter, touch button capacitance detection, 3 sets of timers and signal capture and PWM, dual asynchronous serial port, SPI, USB device controller and full-speed transceiver, USB type-C and other functional modules.

[0046] Communication interface: provides two full-duplex asynchronous serial ports and one SPI communication interface, supporting USB2.0 full-speed and low-speed host or device mode.

[0047] Power supply voltage: Built-in 5V to 3.3V low-dropout voltage regulator, supports 5V or 3.3V or even 2.8V power supply voltage.

[0048] The CH552G chip is suitable for a variety of application scenarios due to its high performance and rich peripheral functions, such as industrial control, consumer electronics, and medical equipment.

[0049] The SNTP network timing chip used is the CH9126. This chip is an SNTP network timing chip based on the SNTP protocol and is mainly used to solve time synchronization problems in embedded devices such as microcontrollers. The following are some key features of the CH9126 chip:

[0050] It has two working modes. It can act as an SNTP client to request time from the SNTP server and output it through the serial port. It can also act as an SNTP server to use pulse and serial port data as the reference time to provide network time synchronization to the SNTP client.

[0051] Ethernet support: built-in Ethernet media transport layer (MAC) and physical layer (PHY), supports 10 / 100M full-duplex / half-duplex self-adaptation, and is compatible with 802.3 protocol.

[0052] Configuration method: Chip parameters can be configured through the network and serial port. The serial port supports multiple data bits, stop bits and parity modes, and the baud rate support range is 300-921600bps.

[0053] Pulse function: Provides 1-second pulse output function with extremely small accuracy error.

[0054] Package type: LQFP64M package is available, 64-pin package, body size is 10x10mm.

[0055] Parameter configuration: The name, clock source, IP address, subnet mask, gateway, destination IP address, pulse control and other parameters of CH9126 can be configured through the serial port and network.

[0056] Restore factory settings: Supports restoring factory settings through hardware or software, causing the chip to reset.

[0057] The CH9126 chip is suitable for embedded systems that require precise time synchronization, such as automation control systems, security monitoring equipment, network communication equipment, and other scenarios.

[0058] The Ethernet interface uses the HR911105A model RJ45 socket, which is equipped with an LED to observe the network connection status.

[0059] The power interface uses a DC-5.5 power socket, which is compatible with commonly used power adapter interfaces on the market.

[0060] The power chip used is the LGS5145. The LGS5145 is a high-efficiency asynchronous buck converter chip manufactured by Prism Semiconductor (Nanjing) Co., Ltd. The following are some of the key features of the LGS5145 chip:

[0061] Input voltage range: The LGS5145 can accept an input voltage range of 4.5V to 55V.

[0062] Output current: The chip can provide a maximum output current of 1A (1000mA).

[0063] Switching frequency: The switching frequency of LGS5145 is 1.2MHz, which makes it suitable for miniaturized designs and for low ripple power switching.

[0064] The antenna uses the ceramic antenna shown, and a spiral antenna or mushroom antenna can also be used depending on the environmental conditions.

[0065] This embodiment utilizes a single Beidou satellite system receiving module for time synchronization, eliminating reliance on foreign satellite positioning systems like GPS, ensuring reliability. Furthermore, the use of satellite event sources enables accurate time source acquisition without accessing the public network, reducing external dependencies. This makes it suitable for use in remote mountainous areas or within local area networks without public network access.

[0066] Programmable controller: It has two UART interfaces, one of which is used to receive NMEA0183 protocol positioning data from the Beidou satellite module, parse the time and location information in the data, perform time zone compensation, and then configure the time information to the SNTP network timing chip.

[0067] SNTP network timing chip: It has an independent SNTP service protocol stack and is directly connected to the LAN through the RJ45 Ethernet interface. It does not require an additional network protocol chip and can carry high-concurrency network access requests.

[0068] Power supply: A low-ripple design provides 1.8V and 3.3V power to the system through DC-DC processing. This ensures power stability while reducing excess heat generated during the step-down and voltage regulation process, thereby mitigating errors caused by temperature drift.

[0069] Flexibility and Compatibility: The device operates with an external power supply of 5-50V, compatible with voltages provided by common DC adapters in a variety of scenarios. Measuring less than 8 x 6 x 3cm, the device is designed with diverse application scenarios in mind, offering excellent flexibility and compatibility, making it easy to integrate with other systems.

[0070] In addition to the above improvements, a side plate 3 is fixedly mounted on the vertical edge of the side of the housing 1 where the Ethernet interface 2 is provided. Figure 2 and Figure 3 As shown, the top of the side is rotatably mounted with an L-shaped guard plate 4, and the top of the guard plate 4 is fixedly mounted with a rotating shaft, as shown in FIG. Figure 3 As shown, the rotating shaft is located at the top two ends of the guard plate 4, and the rotating shaft seat 5 is fixedly installed at the upper end edge of the shell 1. Figure 4 As shown, the shaft seat 5 is provided with a shaft hole that matches the shaft, and the shaft is rotatably installed in the shaft hole. When the guard plate 4 is rotated to abut against the side plate 3, a dustproof cavity with an open bottom is formed between the guard plate 4 and the side plate 3. The dustproof cavity covers the Ethernet interface 2 inside, which has the functions of dustproof and rainproof, making it more suitable for outdoor use. This solves the problem that the existing time synchronization server has poor dustproof effect, especially when used outdoors, in dusty areas, or after long-term use, a large amount of dust accumulates on the Ethernet interface, causing the Ethernet interface to be buried in dust. When a new network cable is connected, the dust causes signal instability.

[0071] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniaturized Beidou time synchronization server device, characterized in that: include: Beidou satellite receiving module for time synchronization settings; SNTP network timing chip; The programmable controller is used to receive data from the Beidou satellite module, parse the time and location information in the data, perform time zone compensation, and then configure the time information to the SNTP network timing chip; Power supply, used to power the Beidou satellite receiving module, SNTP network timing chip and programmable controller.

2. A miniaturized Beidou timing synchronization server device according to claim 1, characterized in that: It also includes an Ethernet interface (2), and the SNTP network timing chip is connected to the local area network via the Ethernet interface (2).

3. A miniaturized Beidou timing synchronization server device according to claim 2, characterized in that: The Ethernet interface (2) is an RJ45 Ethernet interface.

4. A miniaturized Beidou timing synchronization server device according to claim 3, characterized in that: It also includes an antenna, which is a ceramic antenna, a spiral antenna or a mushroom antenna.

5. A miniaturized Beidou timing synchronization server device according to claim 3, characterized in that: It also includes a housing (1), wherein the Beidou satellite receiving module, the SNTP network timing chip, the programmable controller and the antenna are all fixed inside the housing (1) by bolts; The Ethernet interface (2) is fixedly mounted on the side wall of the housing (1); A side plate (3) is fixedly mounted on a vertical edge of a side of the housing (1) where the Ethernet interface (2) is provided; An L-shaped guard plate (4) is rotatably mounted on the edge of the upper end surface of the shell (1). The guard plate (4) can be rotated downward and fitted together with the side plate (3) to form a dustproof cavity with an opening at the bottom.

6. A miniaturized Beidou timing synchronization server device according to claim 5, characterized in that: A rotating shaft is fixedly mounted on the top of the guard plate (4); a rotating shaft seat (5) is fixedly mounted on the edge of the upper end surface of the housing (1), and the rotating shaft is rotatably connected to the rotating shaft seat (5).

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