"Editor's Note" Have you heard of the "ship things" do? In China, the main body of the ship inland shipping, complete shipments annually approximately 40 billion tons, 10 percent of the national total freight. Every day a large number of ships traveling within a narrow river flow, and therefore to achieve safe and efficient management of shipping "boat Things" show a unique value.
March 9, China Electronics Technology Group senior engineer Wu Hongguang, who live in the Beidou Chi-made platform offers an open class online entitled "Compass-based high-precision positioning Canal Waterway safe navigation solution", shared his team practice results in the "ship things" field.
Wu Hongguang, the thirty-sixth Chinese Institute of Electronics Technology Group Corporation senior engineer, has long been engaged waterway wisdom, intelligence and maritime overall design work.
The core of Wu open class as follows:
"Birth defect" VS "potential advantage"
Our inland waters rich in national inland waterways navigable mileage over 120,000 km, due to the large volume compared to road transport, small footprint, low cost, low energy consumption, less pollution, is still beyond the second-largest rail transport mode of transport annual cargo carried by inland Waterways, about 10% of total shipments.
Of Zhejiang, Jiangsu and other places, there are criss-crossing the inland waterway network, the equivalent of the water "highway", a ship carrying a large amount of traffic every day.
However, compared to improve facilities hold up road transport system, inland shipping there is a clear security management pain points:
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Waterway navigation behind: we used Baidu high-mapping software such as Germany, do not support waterway shipping information, which indirectly led to the lack of waterway navigation.
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Inland waterways "birth defect": inland river is narrow, numerous bridges, cargo ships traveling through a larger area occupied by the river, there is a big security risk in touching the river, bridge and so on.
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Low intelligence level of the ship: the majority of inland vessels no radar, no navigation, but also rare intelligent driving technology, the overall low level of information to ships on their own ability to avoid obstacles, poor ability to avoid security risks.
However, at present inland waterway vessels are forced to install the AIS automatically upload location data terminal, able to do shared between the ship's position, which is superior to the highway, it is the "ship things" the potential benefits of building.
Support high-precision positioning "Boat Things" landed
China Electronics Technology Group Corporation pioneered the Beidou Navigation solution integrates high-precision positioning capability, while improving the safety of inland shipping, but also provides the possibility for value-added data services.
▲ overall architecture program
The three parts of the program by the cloud, composed of transmission and boat end, there are two main characteristics, namely, high-precision positioning map service, and the other end of the boat is high-precision positioning, a combination of both vessels is the field of "networked car" it will bring more scenarios in river transport.
Cloud deployment on the shore, a navigation service center, connected through mobile Internet terminal on the ship. Navigation service center contains the navigation map data and a variety of position resolution to use.
For more accurate information presented bridges, information and programs between the boat and the boat navigation maps is a high-precision channel chart.
High-precision measuring equipment, we get the first feature points on the fairway, and then go to match the public map. Because the river is a linear distribution, so long as the banks of the waterways and the map processing, other figures administrative regions maintain the status quo, which is equivalent to the establishment of a high-accuracy correction database in the cloud service center.
▲ establish a revised data on the general map
In the end the boat equipment, we have a short step by integrating Chihiro Pro sub-meter high-precision positioning service, to obtain accurate position data during operation of the ship. This can be a good improvement in the general satellite navigation positioning error of 5,6 m at every turn, the real ship and collided with the bridge, ship and boat collide security alert in the system.
The method of solving the inboard end of the positioning data
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Real time data acquisition accuracy positioning ships, high precision correction database query point mutations from the channel adjacent to the channel bank in FIG.
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Drive Solution through positioning operator to obtain real-time display of the precise coordinates of the ship in FIG channel, and fed back to the shipboard navigation terminal displays
Ship AIS receiver side apparatus further comprising a means. AIS is a special system of the vessel, in accordance with international standards must be installed on all ships, the ship's main role is to broadcast to the maritime administrative department position.
The future, as our oil resources relative lack of contradiction increasingly prominent, low energy consumption of inland shipping comparative advantage will be more prominent, high-precision positioning based on Beidou "ship things" have a broader application space.
