Digital twin technology, as a representative of the integration and breakthrough of various advantageous technologies, has gradually become a hot topic of concern across industries. Planning documents such as the "14th Five-Year National Informationization Plan" and the "14th Five-Year Digital Economy Development Plan" have all called for strengthening strategic research and layout of digital twin technology and promoting the integration and innovation of technology.

Recently, to promote innovation in digital twin technology capabilities, application promotion, and industry cultivation, and to summarize outstanding results and typical practical experiences, the China Academy of Information and Communications Technology (abbreviated as "China Infocomm") and the Digital Twin Technology Application Working Committee of the China Internet Association have jointly released the "Digital Twin City Technology Application Typical Practice Case Compilation (2022)". This marks the third consecutive year that China Infocomm has collaborated with digital twin ecosystem partners to publish the "Digital Twin City Technology Application Typical Practice Case Compilation."

The publication of this compilation aims to assist enterprises and cities in their digital transformation, drive high-quality economic and social development, and provide a platform to showcase the innovative applications and successful practices in the field of digital twin technology. It serves as a valuable reference for stakeholders looking to understand the current state and future potential of digital twin technology in various sectors.

The "Case Compilation" analyzes domestic and international digital twin city practice cases, combines policy requirements, industry hotspots, market size, and other trends, and categorizes the selected cases into areas such as park (new district) comprehensive management, integrated management, energy and electricity, water conservancy and water affairs, intelligent manufacturing, transportation and logistics, based on project coverage and industry application. It selects 16 typical cases with the aim of providing a strong reference for national and local governments to promote the construction of digital twin applications. Beijing Boneng Technology Co., Ltd. (referred to as "Boneng Shares") is selected for the "Case Compilation" with the "Minjiang Jianwei Hydropower Hub Project Shiplock Safety Monitoring and Operation Scheduling Management System" case. This project is developed based on Boneng Shares' independently developed digital twin operating system BLinkOS, which provides a complete industry digital twin application solution from data, platform, to professional digital management systems, and is based on big data, cloud computing, and cloud storage architecture. This product supports the rapid construction of digital applications for different business needs and empowers users' digital and intelligent transformation through multiple methods such as digital infrastructure, service platforms, IoT platforms, and empowerment platforms.

Minjiang Jianwei Hydropower Hub Project Shiplock Safety Monitoring and Operation Scheduling Management System

The Minjiang Jianwei Hydropower Hub Project Shiplock Safety Monitoring and Operation Scheduling Management System combines the operation scheduling of the shiplock with visualization. It obtains declaration information and ship location information through information transmission with the port and navigation center. Through digital twin technology, it constructs a 3D visualization model to achieve real-time monitoring and visualization of shiplock operation scheduling, allowing for a more intuitive view of alarms and issues that occur during ship scheduling. It automatically checks for violations by ships during the lock passage process through safety monitoring and image analysis. Based on the characteristics of ships passing through the lock, shiplock operation, and navigation scheduling, it optimizes ship scheduling排序 to ensure the safety and flexibility of the system.

Application Scenarios

Based on Digital Twin Hydropower Hub Project Panoramic Display

The system uses technologies such as BIM, GIS, oblique photography, and remote sensing data to achieve high-precision digital panoramic simulation of the hydropower hub project, realizing the digital modeling of all scenario elements such as buildings, vegetation, rivers, ships, and equipment facilities in the entire hub project. Combined with real-time local weather data, it can achieve digital display according to real weather conditions. The Minjiang Jianwei Hydropower Hub Project covers the Jianwei branch of Minjiang Company's factory area, dam area, shiplock area, and office building, achieving a 1:1 true restoration of static scenes such as person-shaped gate, curved water intake gate, hydraulic hoisting machine, floating mooring post, traffic signal light, and ground markings, and displays the operation status of the physical project in real-time on the digital twin platform. It monitors the health of physical equipment on the digital twin platform to reduce the chances of equipment downtime and stoppage.

Hydropower Hub Project Data Foundation Construction

Map Data: Convert the engineering drawings of the Qianwei Power Station to obtain basic vector map data, including waterways, lock chambers, gates, and ship positions; convert the design drawings of key equipment positions to obtain equipment vector map data, including surveillance cameras, floating mooring post equipment, wireless Wi-Fi equipment, etc.

Perception Data: Perception data includes ship Beidou positioning data, ship local positioning data, video analysis and early warning result data, gate control data, lock passage flow rate monitoring, floating mooring post position data, etc.

Business Data: Business data includes basic information of ships, ship lock passage information (including time, direction, type of cargo, weight of cargo, lock passage safety information; information of ships declared online for passage; records of ship violations; lock stoppage information, including time and reason; operation and ship safety monitoring indicators of Qianwei Power Station, etc.

Video Data: Uniformly store video stream fragments of ship abnormal behavior scenarios to provide a basis for subsequent ship monitoring problem discovery and tracking.

Spatial Database Management: Clean and convert infrastructure and equipment vector map data according to the spatial data standards of Qianwei Power Station; classify spatial database data according to spatial data classification standards, such as environment, power station facilities, power station equipment, etc.; merge facilities, equipment, and other similar types into layers according to spatial data layering standards; manage map versions by year; archive spatial maps to form a historical atlas.

Ship Positioning and Navigation Full Display

The project uses Beidou as the main positioning and UWB as auxiliary positioning to obtain ship Beidou position information and UWB real-time local positioning, achieving accurate positioning of ships with a horizontal and vertical positioning accuracy controlled within 0.2 meters. The positioning engine software calculates the basic information of the beacons sent by the base stations to obtain the three-dimensional coordinates of the beacons. The three-dimensional coordinates, UWB positioning data, and height measurement data are comprehensively calculated to determine the reference plane, and the UWB data calculates the position of the beacon on the reference plane, ultimately determining the three-dimensional position. The positioning engine software sends the calculated beacon position data to the geographic information platform, which integrates beacon position data, ship information data, and shiplock maps to obtain the specific location of the ship in the shiplock. By obtaining the ship coordinates and basic information of the ship, restore the size, position, and operating trajectory of the ship in the scene to achieve precise display of ship operation.

Lock Chamber Utilization Algorithm Optimization

The system can automatically arrange the ship's parking position in the lock chamber based on the ship's basic information and lock passage application, and optimize the sorting of ships passing through the lock in a single time based on the utilization rate and safety factor of the lock chamber using the "matrix layout" algorithm. The specific methods are as follows:

(1) Sorting management includes pre-sorting and operation sorting. Pre-sorting is the automatic sorting of ships by the operation scheduling system after receiving the pre-declaration of ship passage to determine the upstream and downstream order in advance. Operation sorting is the sorting of actual ships passing through the lock.

(2) It has automatic sorting functions, including optimal utilization of lock space and ship priority level positioning sorting. Optimal utilization of lock space is an optimization sorting problem and a very difficult topic in computational theory. To simplify the calculation, classify ship sizes to reduce types, handle ship sorting as a one-dimensional optimization layout problem with few types and quantities, and establish relevant mathematical models.

(3) It has logical sorting functions, with operating personnel setting priority passage conditions for ships based on ship type, ship number, detention time, etc.

(4) The entire sorting process is composed of logical sorting and automatic sorting. The system first performs logical sorting, and for the remaining lock chamber space after logical sorting, the system automatically sorts according to settings.

Through the "matrix layout" algorithm, the utilization rate of the lock chamber has been increased by 10%, reducing the number of lock chamber operations and lowering operating costs, achieving a safe and efficient ship scheduling process, and effectively solving the increasingly prominent contradiction between the limited passage capacity of the lock and the demand for ship passage.

Based on Digital Twin Full Process Intelligent Operation Scheduling

The project controls the ship passage process, and the system sends lock information and entry and exit orders to ships through the port and navigation information system, achieving scheduling of ships passing through the lock in this project area. Based on the ship sorting results, issue entry and exit orders, and scheduling can be achieved with manual intervention, and the system can be switched to manual operation at any time. Through the data processing device PLC's I/O points, connect with the hoisting machine control system, and receive real-time data of miter gates, water intake gates, hoisting machines, floating mooring posts, traffic signal lights, etc., and truly restore the opening and closing of miter gates, water flow direction of water intake gates, lifting and falling of floating mooring posts, traffic signal light instructions, and water level changes in the three-dimensional scene, displaying the lock scheduling process in a comprehensive and multi-angle manner.

Through the ship lock alarm function, it can detect undeclared ships forcibly entering the lock chamber, avoiding disorder and的危害 to ship and lock equipment safety. By analyzing and judging, and accepting abnormal situation information from safety detection and video analysis, the system links with related systems according to specific abnormal situations to achieve safety control management. It immediately alarms in the scene for ship lock rushing, floating mooring post jamming, ship collision, ship inclination, and ship exceeding speed to allow on-site personnel to quickly discover problems and avoid safety accidents.

Case Summary

This project combines digital twin technology, intelligent IoT perception, 3D simulation technology, big data visualization technology, 5G transmission, and other technologies. The digital twin scene restoration degree reaches more than 90%, and it supports the access of thousands of IoT perception devices in real-time, mastering the operating status of facilities such as ships, gates, and pump rooms. Combining shiplock operation scheduling with visualization, it obtains declaration information and ship location information through information transmission with the port and navigation center. Through the integration of BIM+GIS, it constructs a 3D visualization model to achieve real-time monitoring and visualization of shiplock operation scheduling, and more intuitively view alarms and issues that occur during ship scheduling. It automatically checks for violations by ships during the lock passage process through safety monitoring and image analysis. Based on the characteristics of ships passing through the lock, shiplock operation, and navigation scheduling, it optimizes ship scheduling排序 to ensure the safety and flexibility of the system