Saisi x Nanyu Railway | 350km/h! The Saisi timing system ensures the safe and smooth operation of the Nanyu Railway!

Nanyu Railway, the first wholly-owned high-speed railway in Guangxi with a speed of 350 kilometers per hour

The Nanyu Railway runs through three cities - Nanning, Guigang, and Yulin. It has a total length of 193.31 kilometers and includes six stations: Nanning East, Wuhu (transfer station), Liuxing, Hengxian, Xingyuan South, and Yulin North. There are 124 bridges and 35 tunnels along the entire line. It crosses karst terrain and has an 83.98% bridge-to-tunnel ratio. The designed operating speed is 350 km/h, setting a new record in the history of railway construction in Guangxi.

The opening of the Nanyu Railway marks that Yulin City has officially been connected to the high-speed rail network. It not only reduces the travel time from Nanning to Yulin from 2 hours to 50 minutes, but also makes Guangxi the first province in the western region to have "railway access to all cities". At the same time, this is of profound significance for promoting the "eastward integration" of Guangxi with the Guangdong-Hong Kong-Macao Greater Bay Area, implementing the new mission of Guangxi's "three major positioning", and achieving the "two constructions" goals.

The Saisi high-performance timing system is used for the Nanyu Railway to build a "smart time network"

The Nanyu Railway, as the first wholly-owned high-speed railway in Guangxi with a speed of 350 kilometers per hour, crosses karst terrain and has an over 80% bridge-to-tunnel ratio. The complex geological environment and high-speed scenarios pose dual challenges to time synchronization products.

In the complex environment of karst terrain and dense tunnel clusters, satellite signals are easily blocked, making traditional clock systems unable to provide stable high-precision timing. At the same time, with a speed of 350 km/h, the train moves nearly 100 meters per second. If there is a 1-second time deviation in the train dispatching, signal, and power supply systems, it may directly cause chaos in the overall dispatching and affect the safe operation of the trains.

In response to the high requirements for time synchronization in the use scenarios of the Nanyu Railway, the Saisi high-performance timing system, with nanosecond-level synchronization accuracy (one billionth of a second) and a timing performance of better than ±0.5 μs@1 day, builds a "smart time network" covering the entire line for the Nanyu Railway, fully safeguarding the efficient operation of all trains.

The Saisi high-performance timing system selected for the Nanyu Railway is a clock synchronization device that adopts digital phase-locked loop technology and an independent timing algorithm based on FPGA, capable of providing high-precision and high-reliability time-frequency reference signals for the rail transit system. The product has passed the first, second, and third entry tests of the Ministry of Industry and Information Technology, the seismic performance test of the TEL laboratory, and low-pressure detection, and has received multiple authoritative institution detection certifications, possessing extremely strong environmental adaptability.

As the Nanyu Railway trains travel at 350 kilometers per hour through the southeastern urban cluster of Guangxi, the Saisi high-performance timing system is quietly safeguarding the safe and smooth operation of each train...

With the acceleration of the transformation of rail transit towards intelligence and networking, the timing system is not only the "time center" of rail transit but also the "nerve endings" of the smart transportation network.

This time, the Saisi timing system successfully empowers the Nanyu high-speed railway with a speed of 350 kilometers per hour, injecting nanosecond-level "clock heartbeat" into it, and also achieving another milestone in the Saisi's presence in the rail transit field.

As the benchmark clock supplier for more than 50% of newly built metro communication systems in China, Saisi has injected the Saisi "clock heartbeat" into the metro networks of 20 cities including Beijing, Guangzhou, Wuhan, Ningbo, Zhengzhou, and Guiyang, and has built industry benchmarks with multiple pioneering technologies - creating the world's first commercial rail transit LTE network IEEE1588 timing synchronization benchmark (Wuhan Metro Line 6) and the first commercial rail transit PTP time synchronization project (Guiyang Metro Line 1)...... On the international stage, the Saisi clock system has been deeply involved in a number of major international rail transit super projects: from the Mexico Metro Line 1, one of the top ten PPP classic cases worldwide, to the Aji Railway, the first electrified railway in Africa, and to the Yawmawan High-Speed Railway, a benchmark in Southeast Asia, Saisi has always been using its domestically leading clock synchronization technology to continuously set new standards for global intelligent transportation.

Looking to the future, Saisi will drive the digital transformation of rail transit with its "clock heartbeat", from equipment timing to system collaboration, from domestic benchmarks to global expansion, continuously outputting higher precision, more stable and reliable products and solutions, and helping the rail transit industry advance to a higher dimension of digitalization and intelligence.