How the shipbuilding industry can play with shipping big data_Data Analyst Exam
Analysis of big data and mining the value it contains have become hotspots in many industries and play an important role in industry evaluation, forecasting and business operations. Chen Changyun, deputy chief engineer of the Shanghai Institute of Ship Transportation Sciences and head of the State Key Laboratory of Shipping Technology and Safety, believes that the shipbuilding industry is a traditional industry that is relatively lagging behind in its integration with the Internet and big data technology, but the shipbuilding industry is also a global and large-scale industry that links the design, manufacturing and transportation industries, etc., and has a deep-seated relationship with the big data of many industries, which includes Shipping Big Data. A few days ago, he presented to his shipbuilding colleagues about research on shipping big data technology and how to make shipping big data work for the shipbuilding industry.
Shipping big data collection and transmission of existing technical support
Chen Changyun said, shipping big data, including ship operation management, ship sailing environment, ship sailing performance and operation of energy and other data content, usually through the shipping information management and ship operation monitoring of two ways to obtain.
The most common real ship data is the data tested during the ship's trial voyage, which mainly includes speed, heading, wind speed, wind direction, main engine speed and torque. However, this type of data is acquired in a specific environment, collected at a specific time and with a limited amount of data. Therefore, long-term monitoring of operating vessels is necessary to obtain the most comprehensive data.
In the past, the navigation data of operating ships were mainly obtained by regular reporting, usually every 4 hours or 6 hours from the ship to the shore, and manual statistical transcription was more common. At present, with the gradual intellectualization of ship equipment, satellite positioning technology and communication technology is becoming more and more mature, the measurement of a lot of physical data of operating ships has become possible, and the integration of ship and shore information in the shipping industry has also become a reality. Chen Changyun proposes that two simple and practical methods can be adopted under the current conditions in order to realize a large amount of shipping data transmission and the cost is not too high. One is to carry out data shore-side wired transmission, i.e., when the ship is docked or berthed at the pier, the data will be sent to the designated shore-side network information platform using wired encryption, and the owner of the shore-side network information platform can be the company to which the ship belongs, or it can be the cooperative scientific research institutions. Secondly, through mobile storage media, when the ship returns to a specific port on each voyage, it will be handed over by the designated crew to the designated organization on shore.
Given the complexity of wind and waves at sea and the operating environment of various equipment on board, the data obtained from monitoring will inevitably be incomplete or distorted. Chen Changyun said, for ship monitoring data to be corrected. Can be based on the characteristics of the monitoring data to find out the distortion of the data, but also according to the magnitude of the data and data trends to judge, but also according to the value of other relevant signals to judge, for example, can be based on the ship's movement to determine whether the wave height monitoring data is distorted and so on. Once the distorted data is determined, certain numerical methods should be used to repair the distorted data, and the subsequent monitoring data should be re-verified, and the correct result should be gradually approached through multiple iterations and analysis.
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