Transportation Field-Ningbo Goshining Communication Technology Co., Ltd.

Communication System

Constructing the Backbone Transmission Network: Adopt an optical fiber communication system based on the MS-OTN (Multi-Service Optical Transport Network) multi-service integrated bearing platform. Utilize TDM (Time Division Multiplexing) and WDM (Wavelength Division Multiplexing) technologies to uniformly access various services such as PCM (Pulse Code Modulation), SDH (Synchronous Digital Hierarchy), OTN (Optical Transport Network), and Ethernet. Achieve the unified bearing of hard pipelines for urban rail production network bearing services, video backhaul, advertising videos, office services, etc., ensuring physical isolation between services, with "0" blocking and "0" crosstalk.

Realizing Train-Ground Communication: Through the optical fiber network, realize high-speed and large-capacity communication between trains and stations, as well as between trains and the ground control center. Meet the real-time transmission requirements of data such as the track occupancy status and vehicle speed commands in the Train Automatic Control System (ATC), ensuring the safe and precise operation and dispatching of trains.

Signal System

Ensuring Stable Signal Transmission: Utilize the characteristics of optical fibers, such as high bandwidth and low latency, to provide a stable transmission channel for the signal system, ensuring the accuracy and timeliness of signals. For example, adopt the multi-plane static cross-connection technology to achieve wavelength-level direct access with low latency and exclusive bandwidth, ensuring the stable and jitter-free operation of production train control signals.

Supporting Signal Security Encryption: Combine with the L1 layer AES256 encryption technology to encrypt and transmit signals, preventing signals from being stolen or tampered with and improving the security of the signal system.

Video Surveillance System

In-carriage Monitoring: Install cameras inside the train carriages, and transmit the video signals to the monitoring equipment on the train or the ground control center through optical fibers to achieve real-time monitoring of the situation inside the carriages, ensuring the safety of passengers and the normal operation of the train.

Station and Trackside Monitoring: Deploy high-definition cameras at positions such as stations and along the track. Optical fibers are used to backhaul the video data collected by these cameras to the control center, enabling the staff to grasp the passenger flow at the stations, the track environment, and other situations in real time, and to detect abnormalities in a timely manner and take corresponding measures.

Power Supply System Monitoring

Real-time Monitoring of Power Supply Equipment Status: Install optical fiber sensors in the power supply equipment to monitor parameters such as the temperature, current, and voltage of the equipment in real time, and discover potential faults of the equipment in a timely manner to avoid affecting the normal operation of the rail transit due to power supply failures.

Ensuring the Safety of Power Transmission: Utilize optical fiber communication technology to achieve remote monitoring and management of the power supply system, ensuring the stable and safe power transmission. For example, conduct real-time monitoring and control of equipment such as substations and catenaries.

On-board Information System

Signal Transmission of the Entertainment System: Inside the high-speed rail carriages, use 4K/8K HDMI optical fiber cables or DP optical fiber cables to connect the entertainment screens and servers, achieving attenuation-free transmission over a distance of more than 100 meters and avoiding screen flickering caused by electromagnetic interference at the carriage joints, providing passengers with a high-quality entertainment experience.

Special Optical Cables Adapt to the Vibration Environment: The special bending-resistant optical cables of Huaguang Yuneng have the characteristics of toughness and flexibility, which can better adapt to the vibration environment of the carriages and stably transmit audio and video signals to the entire vehicle's audio-visual system.