Industry Information

Edge Computing Highway road test system

2023-08-16 12:02:43 tuwei312 79

 Sichuan Expressway Construction and Development Group Co., Ltd. was established in July 1992 with a registered capital of 9.4 billion yuan, and is one of the enterprises directly affiliated to Shudao Group. Since its establishment, Sichuan Gao Company has always adhered to the responsibility of state-owned enterprises, actively obeyed and served the overall development of the province, fully promoted the investment, construction and operation and management of expressways and related supporting facilities, and committed to improving the province's expressway network and service system. After 30 years of continuous exploration and development, Sichuan Gao has more than 60 wholly-owned, holding and shareholding subsidiaries, with a total of 14,000 employees and a total mileage of 5,693 kilometers of expressways. Based on the new era and new journey, under the strong leadership of Shudao Group, Sichuan Gao Company will adhere to the guidance of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era, take the "two-way spirit" as the guide, actively seize major strategic opportunities such as the construction of the Chengdu-Chongqing Twin Cities Economic Circle and the construction of a strong transportation province, unswervingly fulfill the duties and missions of state-owned enterprises, constantly meet the people's beautiful travel yearning for "smooth, safe, comfortable and beautiful", and contribute more strength to the governance of Shu Xingchuan to a new level!

Nvidia Jetson Platform

At this stage, the construction of expressways is mainly to ensure traffic safety, strengthen transportation capacity, and improve service levels, and take vehicle-road coordination as the construction direction to carry out the construction of high-precision positioning, intelligent video surveillance, interactive traffic signs, highway cloud control platform, public travel service platform and other contents of expressway. According to the preliminarily built roadside sensing equipment, a control, dispatching and service platform is built to provide road users with lane-level navigation, no-stop charging, early warning of accidents ahead, early warning of throwing objects, special vehicle avoidance, ramp warning, meteorological environment push, digital release of sign information and other vehicle-road coordination functions.

For various application scenarios of expressways, by laying roadside infrastructure, building front-end perception and edge computing systems, combining different scene functions and requirements, roadside vehicle-road coordination scenarios, ramp diversion and merging safety warning and guidance scenarios, and quasi-all-weather auxiliary traffic scenarios are built to provide accompanying travel services for travelers, improve travel efficiency, and ensure travel safety.

1. Roadside vehicle-road coordination system

The roadside vehicle-road coordination system is mainly composed of roadside perception subsystem, roadside computing subsystem and roadside communication subsystem.

· Roadside sensing subsystem

It mainly collects roadside road conditions and detects incidents through high-definition cameras, millimeter-wave radar, lidar, infrared dual-spectrum cameras and other equipment.

· Roadside computing subsystem

It mainly manages radar, cameras and other devices through edge computing nodes, and performs fusion analysis of the information collected by radars and cameras.

· Roadside communication subsystem

Roadside communication units (RSUs) communicate with intelligent vehicle-mounted terminals (OBUs) via LTE-V 5.9GHz. RSU broadcasts the scene function information to the networked vehicle in a timely manner, and after the vehicle receives it, OBU calculates and determines whether the corresponding information prompt is triggered based on the perception information provided by the roadside, forming a vehicle-road collaborative application scenario.

2. Safety warning and guidance of shunt and merging flow

The expressway diversion and merging area is an area where the traffic flow changes, mainly including three typical scenarios: ramp interconnection, hub interconnection, and service differentiation.

In the area of merging and merging, illegal driving behaviors and collision accidents are prone to occur due to large speed differences between the main line and ramp, many lane change behaviors, short lane change window periods, and limited driver's field of vision.

By setting up road coordination equipment at the junction of the ramp, the safety and efficiency of vehicles at the junction can be greatly improved. Realize vehicle safety warning at the junction: such as vehicle collision warning ahead, safety reminder in the merging area, safety reminder in the diversion area, road danger condition warning, etc., and realize vehicle efficiency warning: such as congestion warning ahead, speed limit warning, event warning, etc.

3. Quasi-all-weather auxiliary passage

The quasi-all-weather auxiliary traffic section adopts traffic information monitoring, vehicle-road coordination, edge computing and other technologies and control methods, and completes the holographic perception and release function of the road section through the coverage of the whole road section through perception and communication, so as to realize the full-line tracking and real-time positioning of the vehicle, and realize the real-time guidance and safety warning function of the full path. Quasi-all-weather traffic is generally composed of meteorological monitoring subsystem, fog area guidance subsystem, vehicle-road coordination subsystem, and intelligent information release subsystem.

Nvidia Jetson Platform

Through diversified and intelligent means, the quasi-all-weather auxiliary traffic information is released to non-networked vehicles in a timely manner, so as to realize the quasi-all-weather road section events and meteorological warnings, and provide accurate and reliable information services.

Specifically, variable information signs along expressways provide broadcast-style information services in a variety of ways, such as text, graphics, and images; The service travel website adopts a graphical interface to provide broadcast information services in various ways such as text, graphics, and images; The transportation service hotline has the ability to accept telephone consultation from traffic participants and provide targeted and personalized information services by voice; Radio broadcasting provides broadcast-style information services on a large scale by voice in cooperation with radio and television administrations; Through cooperation with telecom operators and SMS operators, mobile phone SMS provides broadcast information services in a large range by text; Mobile applications/mini programs, WeChat official accounts, etc., or third-party travel information service systems, using 4G/5G networks to provide broadcast-style and personalized information services.