Log In | Enterprise CRM | Corporate Email
Application Cases of Railway Tunnel Disaster Prevention and Safety Monitoring Systems
Release date:
2020-03-27
Our company's independently developed NA series programmable controllers are primarily designed for railway tunnels, especially high-speed rail tunnels—including passenger-dedicated lines and intercity railways. These controllers serve as a comprehensive monitoring and management system for the tunnel's electromechanical equipment, enabling centralized oversight of power facilities, lighting/emergency lighting systems, ventilation fans, water supply and drainage systems, fire doors, and more. They also provide fault alerts and facilitate efficient scheduling and dispatching. In the event of an emergency, these controllers can seamlessly integrate with the FAS or other automated systems, executing pre-generated disaster response plans to initiate automatic controls. This proactive approach helps prevent and mitigate disasters, ensuring the safe operation of trains.
Aoto NA-PLC Railway Tunnel Disaster Prevention and Safety Monitoring System Solution
Our company's independently developed NA series programmable controllers are primarily used in railway tunnels, especially Integrated Monitoring and Management System for Electromechanical Equipment in High-Speed Rail Tunnels (including Passenger-Dedicated Railways and Interurban Railways) , primarily responsible for the centralized monitoring, fault alarming, and dispatch management of power facilities, lighting/emergency lighting equipment, ventilation fans, water supply and drainage systems, fire doors, and more within the tunnel. In the event of a disaster, it can seamlessly integrate with the FAS or other automated systems, automatically executing pre-generated disaster response plans to achieve the goals of disaster prevention and mitigation, thereby ensuring the safe operation of trains.
Our company's products primarily accomplish Tunnel Monitoring Center And Data Acquisition from On-Site Monitoring Terminals The project utilizes a medium-to-large PLC, the NA400, at the tunnel monitoring center, featuring a hot-standby redundancy system solution that ensures power, CPU, and network redundancy, thereby guaranteeing secure and reliable data acquisition. At the field level, the monitoring terminals primarily employ our company’s NA2000 series of compact, integrated controllers equipped with Ethernet interfaces. These NA2000 system controllers integrate Ethernet connectivity along with multiple RS485 ports and an extensive array of I/O interfaces, enabling local-level data collection and control operations. Data exchange across the system is facilitated via a fiber-optic ring network, working seamlessly with the NA400 PLC.
The application of Aoto NA-PLC in the disaster prevention and rescue equipment monitoring system for high-speed railway tunnels along the Shanghai-Kunming-Yunnan section.
With the rapid development of railway construction in China, railways are no longer limited to plains and hilly areas—they are now also being built in mountainous regions with complex geological conditions, as well as in areas crisscrossed by rivers and lakes. To optimize route alignments, shorten line lengths, and overcome challenging geological conditions, long mountain tunnels and underwater tunnels have increasingly demonstrated their advantages in railway projects. However, this trend has simultaneously given rise to new challenges in disaster prevention and evacuation planning.
This time, the NA series PLC from Nanda Aotuo was adopted as the core controller for the tunnel disaster prevention and rescue equipment monitoring system along the Shanghai-Kunming Yunnan section and the Yun-Gui Yunnan section, achieving excellent results in field applications.
System Overview >>>
The monitoring system works as follows: The railway bureau center sends commands to the master controller via the MODBUS TCP protocol while simultaneously monitoring the status of on-site equipment. Upon receiving commands from the railway bureau center, the master controller forwards these instructions to the remote station also using the MODBUS TCP protocol. If the master controller is equipped with functions for controlling the main tunnel and fans, it can use the MODBUS TCP protocol to remotely start or stop the main tunnel lighting and fans. Meanwhile, the remote station executes the received commands by activating or deactivating the rescue tunnel lighting and fans through the MODBUS TCP protocol.
1. The monitoring system consists of a three-tier network structure: the centralized control center, the tunnel monitoring center, and the on-site monitoring terminals.
2. Single Rescue Tunnel Hardware Architecture
Our company's products primarily handle data collection tasks for tunnel monitoring centers and on-site monitoring terminals. Among them, the tunnel monitoring center is equipped with a medium-to-large PLC from the NA400 series, utilizing a hot-standby redundancy system solution that ensures power, CPU, and network redundancy, thereby guaranteeing the secure and reliable collection of data. At the field level, the monitoring terminals primarily employ our company’s NA200H series compact, integrated controllers featuring built-in Ethernet interfaces. The NA200H system controller integrates an Ethernet interface, multiple RS485 ports, and a wide range of I/O interfaces, enabling local data acquisition and control operations. Data exchange between these field terminals and the NA400 PLC is facilitated via a fiber-optic ring network.
3. Monitoring System
The system configuration screen was developed by Sichuan Kuanggu Information Engineering Co., Ltd. The system interface is shown below:
4. Site Environment Diagram
This project is funded by Sichuan Kuanggu Information Engineering Co., Ltd. Design and implement, the product utilizes Nanjing Aotuo Technology NA-PLC
System Function Design >>>
The host computer uses configuration software to develop the corresponding program, enabling monitoring and display of on-site equipment. The system control modes primarily include automatic/manual, automatic centralized control, and manual operation.
① Automatic and manual modes allow you to start or stop individual controllable devices using the mouse.
② Manual operation uses the buttons on the field control box to start and stop individual controllable devices;
③ Automatic centralized control refers to the system's fully automated operation and online monitoring of the entire process—covering startup, operation, shutdown, as well as fault alarms and protective shutdowns during runtime.
NA400PLC Software Design
The software design for the program control system employs ladder diagrams and adopts a modular approach, dividing the functions required by the entire control system into several distinct modules, which are then designed individually. This method offers the advantages of convenient design, easy program modification, and enhanced clarity in program structure.
① Automatic Centralized Control Function Module Design
② Automatic and Manual Function Module Design
③ Analog Signal Processing Module Design
④ Design of the Host Computer Communication Module
⑤ Alarm Module Design
Configuration Software Design
The configuration software was developed by Sichuan Kuanggu Information Engineering Co., Ltd. and consists of the following main components:
① Surveillance Video Production
② Parameter Configuration Screen Creation
③ Alarm Screen Creation
④ Establish a database
⑤ Real-time trend chart and historical trend chart
Keywords:
The previous one
The next one
Related Products
Service hotline:+8618905163737
Company Headquarters: No. 15, Building B, Zone B, Phase I, Headquarters Economic Park, 69 Fengzhan Road, Yuhuatai District, Nanjing, Jiangsu, P.R. China
Production Center: No. 219 Qinghuiting West Road, Jiangning Economic Development Zone, Nanjing City, Jiangsu Province
Aoto Technology Co., Ltd.
