I. Project Name

Research and Development Scenario Time Synchronization System Construction Project of China Railway Major Bridge Engineering Group Co., Ltd.

II. Duration of Cooperation

2026 year

• Customer Introduction

China Railway Major Bridge Engineering Co., Ltd. is a leading research institution in China’s bridge engineering and transportation infrastructure sectors. The company is deeply engaged in core areas such as bridge engineering R&D, testing and inspection, scientific innovation, and engineering consulting, with a strong focus on tackling technical challenges in major transportation infrastructure projects, developing new construction techniques, applying advanced materials, and conducting quality assurance and testing. The enterprise has undertaken numerous national‑level and provincial/ministerial‑level key research projects, as well as supporting research for major bridge engineering initiatives. It boasts a comprehensive research‑testing system and stringent engineering‑testing standards, ensuring time synchronization across the entire workflow—including research experiments, data monitoring, and equipment maintenance. Accurate It upholds exceptionally high professional standards in terms of expertise, stability, and consistency, serving as a benchmark enterprise in China’s transportation infrastructure research and development sector.

IV. Purchased Products

Product Name: NTP Server (Network Time Server)

Product Model: DNTS-9

This item DNTS-9 NTP The server is an intelligent, high-precision time‑synchronization device independently developed by Beijing Zhongxin Chuang, supporting GPS , Beidou, GLONASS 、 Galileo Time synchronization across multiple satellite systems, compatible. NTP/SNTP The full version of the agreement and IPv4/IPv6 Dual-network architecture, with internal device accuracy reaching 1us , the conventional timing accuracy remains stable at 1-10ms Equipped with a proprietary clock‑keeping algorithm and a multi‑redundant hardware architecture, it effectively mitigates the impact of external time‑source errors, ensuring the stability and monotonicity of its time output. Moreover, the device supports compatibility with multiple domestic operating systems, demonstrating strong localization‑friendly integration and environmental adaptability, thereby meeting the demands of scientific research environments. 7×24 Requirement for continuous, stable operation over an extended period.

V. Customer Requirements

In light of the business characteristics of the China Railway Major Bridge Engineering Group’s Research Institute—namely, its research, testing, and engineering inspection activities—the core requirements of this project are centered on a time synchronization system. Accurate The construction of standardization, stabilization, and security is required, with the specific needs as follows:

1. High-precision time synchronization requirements: In scenarios such as scientific research and experimentation, bridge structural monitoring, and engineering data acquisition and analysis, various test instruments, monitoring terminals, and data servers must achieve unified time alignment to prevent time discrepancies that could lead to corrupted experimental data or invalid monitoring results, thereby ensuring the authenticity, accuracy, and traceability of research data.

2. High‑stability operational requirements: Scientific research and experimental work are characterized by continuity and long-term operation, necessitating time‑synchronization equipment that can run continuously around the clock, with robust anti‑interference and anti‑time‑jitter capabilities. Such equipment must be compatible with the complex electromagnetic environment of laboratories to prevent equipment failures and time drift from disrupting research activities.

3. Multi-device compatibility and adaptation requirements: With a diverse array of in-hospital network devices, laboratory instruments, and monitoring terminals, the time‑synchronization system must support mainstream network protocols and seamlessly integrate with various endpoint devices, while aligning with the hospital’s existing network architecture—eliminating the need for large‑scale overhauls of the legacy infrastructure and enabling rapid, enterprise‑wide time‑synchronization deployment.

4. Domestic Localization and Security Requirements: In line with the trend of information technology infrastructure development in the research sector, equipment must demonstrate robust domestic compatibility, support integration with domestically developed operating systems, and incorporate comprehensive security and encryption mechanisms to ensure the security and stability of the research network’s time‑keeping system, thereby mitigating risks associated with network time‑synchronization security.

VI. Solution

To meet the core research‑related needs of its client, Beijing Zhongxin Chuang has customized a dedicated high‑precision network time‑synchronization solution and deployed it. DNTS-9 NTP As the core time‑synchronization device, the server establishes a standardized, highly reliable network‑wide time‑synchronization system. The specific implementation plan is as follows:

1. Multi-source satellite timing assurance Accurate Degree: Device connectivity to the BeiDou system, GPS Including multiple satellite time‑synchronization systems, it automatically selects the optimal time source to achieve millisecond‑level accuracy. Accurate Time synchronization meets the high‑precision timing requirements of scientific research and engineering monitoring, ensuring the temporal consistency of diverse research datasets at the source.

2. Redundant architecture ensures continuous operation: Leveraging a highly redundant hardware design and an autonomous clock‑keeping algorithm, the device can maintain stable operation on its own even during brief interruptions of satellite signals. Accurate Time output, eliminating time jumps and drift, tailored for scientific research applications. 7×24 The requirement for continuous, round-the-clock operation ensures the uninterrupted continuation of research activities.

3. Fully protocol‑compatible and adaptable to the existing ecosystem: DNTS-9 Device compatibility NTP/SNTP V1.0-V4.0 、 SNMP 、 SSH 、 HTTPS Supports various mainstream network protocols, including IPv4/IPv6 Dual‑stack support enables seamless integration with the customer’s existing research network architecture, seamlessly interfacing with a wide range of in‑house experimental equipment, servers, and monitoring terminals—without requiring any modifications to existing devices or networks. Deployment is straightforward, and compatibility is exceptionally robust.

4. Secure and compliant adaptation for indigenous innovation: The device supports domestic processor platforms and indigenous operating systems such as Kylin and UOS, complies with the industry‑specific standards for information technology innovation, and is paired with… MD5、 SSL Encryption-based authentication mechanisms effectively mitigate risks of network time‑service tampering and cyberattacks, ensuring the secure and compliant operation of research‑network time systems.

5. Simplified operations and maintenance tailored to research scenarios: The device supports web-based visual management, remote O&M, and automated fault alerts, making operational tasks straightforward and convenient. It eliminates the need for dedicated on‑site personnel, thereby reducing customers’ long-term O&M costs and manpower requirements.

VII. Implementation Outcomes

This project successfully completed equipment deployment, commissioning, and network-wide time‑synchronization optimization. Following its implementation and go-live, it effectively addressed key challenges faced by the China Railway Major Bridge Engineering Group’s Research Institute, including inconsistent time across multiple devices in research environments, difficulties in data traceability, and system instability, delivering excellent results.

1. Achieve full-network coverage Accurate Time Synchronization: All research and experimental equipment, data servers, and engineering monitoring terminals within the facility have been synchronized to a unified time standard, with timing accuracy consistently meeting specifications. This eliminates errors in research data and invalidation of experimental results caused by time discrepancies, significantly enhancing the reliability of research and experimental data. Accurate Degree and reliability.

2. Ensuring long-term stable system operation: The equipment maintains stable performance, exhibits strong anti-interference capabilities, and is compatible with complex laboratory operating environments. It provides continuous, round-the-clock time‑synchronization services, effectively supporting the orderly execution of various long-term scientific research experiments and bridge‑monitoring projects.

3. Reducing O&M and upgrade costs: The equipment seamlessly integrates with the existing network and infrastructure, eliminating the need for large-scale renovations or upgrades. Coupled with intelligent remote O&M capabilities, it significantly lowers system deployment expenses and ongoing operational burdens, thereby enhancing the overall efficiency of the research network.

4. Meeting indigenous innovation and compliance requirements: The domestically developed, architecture‑aligned solution conforms to the security and compliance standards of the research sector, establishing a secure, stable, and independently controllable scientific time‑synchronization system that provides robust technical support for the implementation of various key research projects.

VIII. Benchmark Application Cases

Beijing Zhongxin Chuang has been deeply engaged in the time‑synchronization field for many years. With its high‑precision, highly stable timing products and expertly tailored solutions, it has long provided services to leading organizations across various sectors, including national research institutions, the aerospace and aviation industries, defense contractors, transportation, and the power sector. Notable partnership cases include: the China Academy of Launch Vehicle Technology, the Tianma Radio Telescope of the Chinese Academy of Sciences, the Shenzhou‑14 manned spacecraft, the Shanghai Academy of Spaceflight Technology, the China Electric Power Research Institute, the Institute of Physics of the Chinese Academy of Engineering, the Institute of Automation of the Chinese Academy of Sciences, the Institute of Oceanology of the Chinese Academy of Sciences, the Institute of High Energy Physics of the Chinese Academy of Sciences, the China Institute of Atomic Energy, the Nanjing Institute of Astronomical Optical Technology of the National Astronomical Observatory, the China Academy of Information and Communications Technology, the Lanzhou Branch of the Chinese Academy of Sciences, the Institute of Modern Physics of the Chinese Academy of Sciences, the China Railway Research Institute, the Instrument Research Institute of the Nanjing Astronomical Observatory of the Chinese Academy of Sciences, the Xichang Satellite Launch Center, and the 3rd Research Institute of China Electronics Technology Group Corporation… 54 Research Institute, the Tenth Research Institute of China Electronics Technology Group Corporation, the Eighth Research Institute of China Electronics Technology Group Corporation, the Fifteenth Research Institute of China Electronics Technology Group Corporation, the Thirty-Sixth Research Institute of CETC, the Xi’an Flight Automatic Control Research Institute of Aviation Industry Corporation of China, the Taiyuan Satellite Launch Center, the Beijing‑1 Satellite Ground Station, China Putian, Shanghai Lizheng Satellite Application Technology, the Shanghai Small Satellite Engineering Center, the Chongqing Transportation Science Research Institute of China Merchants Group, the Railway Research Institute, the Lanzhou Institute of Physics, the …th Research Institute of China Electronics Technology Group Corporation. 12 Research institutes, including the Shanghai Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences and the Institute of Information Science, among others.

The choice of numerous departments and enterprises reflects recognition of Zhongxin Chuang’s products and services. By working in close collaboration with partners across all sectors, we are jointly advancing toward win-win outcomes for businesses and society alike.