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Sediment sampling is one of the important ways to study the water environment. A sampling device for shallow water sediment is an indispensable tool to obtain the shallow water sediment samples, which is widely used in ponds, river channels and fish ponds. It can sample sediment samples for researchers to study and analyze the content of various pollutants in the water environment. Based on the sampling environment and sample demand of shallow water sediment, a sampling device for shallow water sediment with good sampling stability, low disturbance in sampling process and convenient operation is designed.

The existing circulating aquaculture water level regulation device has disadvantages such as inconvenient operation and inaccurate regulation of water level, which brings great inconvenience to the daily management and maintenance of circulating water system. In this paper, a device which can adjust the water level of the breeding barrel is designed for the circulating water system, so that the water level height of the circulating aquaculture barrel can be adjusted according to the density and size of the breeding object, thus the maintenance and energy consumption cost in the process of circulating aquaculture can be reduced.

Runway-style breeding ponds are favored by more and more breeding owners. However, most of existing runway-style breeding pond feeding devices have the disadvantages of single function, fixed position and poor pertinence. This article designs a multi-point synchronous feeding device, which mainly includes overall design, storage mechanism design, conveying mechanism design and feeding mechanism design. The device realizes multi-point simultaneous feeding of runway-style breeding ponds, improves the feeding efficiency.

In order to solve the feeding problem of circulating aquaculture, the author designed a walking device for granular feed, which mainly includes walking mechanism, feeding mechanism, transmission mechanism and reversing mechanism. The walking feeding device is convenient to feed for multiple breeding barrels, improves the feeding efficiency and reduces the working intensity.

Jet aerator is one of the most commonly used aerators, which is also an essential device in modern aquaculture. However, the design and calculation of jet aerator result in low efficiency. Based on the types and sizes, working principles and functional characteristics of the jet aerator, this paper puts forward the computer aided development of jet aerator and achieves the secondary development of CAD with VBA. Users only need to input the key parameters to get the standard engineering drawing of jet aerator, which greatly improves the drawing efficiency of the designer.

At present, the mechanization of shrimp culture in China is still low, and most of them are artificially fed. Artificial feeding is not only labor-intensive, but also has the disadvantages of uneven feed throwing. In this paper, a feeding device for Penaeus Vannamei breeding pond is designed, which mainly includes guide trolley, support body, feeding rod, storage plate and storage bucket, the feeding efficiency of Penaeus Vannamei is improved.

Guangdong People’s Stadium, known as the “living fossil of sports culture in the South of the Five Ridges”, is one of the most ancient stadiums in China. It owns a history of over 1400 years from the “Yuewutang” in Tang Dynasty in 618AD, and has left abundant sports cultural heritage. However, many precious sports cultural heritages have been damaged and lost over time. This paper makes a digital exploration of sports cultural heritage of Guangdong People’s Stadium based on image processing technology, 3D modeling technology, 3D scanning technology and action simulation technology in combination with software such as Photoshop, SolidWorks, Geomagic and CATIA. It may help protect and carry forward the sports culture of Guangdong People’s Stadium and even the South of the Five Ridges.

Corrugated box is a widely used means of transportation packaging, there are various box types such as slotted type, nested type, folding type, slide type, fixing type, automatic type and other types of boxes, special standards on the type and size of corrugated box is formulated by Chinese national standards. However, when drawing corrugated boxes with various CAD software now, we need to model and edit according to the box shape, specific size of corrugated boxes and the drawing efficiency is low. In this paper, on the basis of the established corrugated box access database, we use the Visual Basic to develop corrugated box parametric drawing system on SolidWorks platform. The users only need to select the desired corrugated box carton and the key parameters, then can get the 2D expansion diagrams and 3D stereoscopic diagrams in accordance with the national standard, which significantly improve the efficiency of the corrugated box drawing.

Corrugated box is one of the most widely used packaging products. Currently drawing and modelling corrugated box in AutoCAD system is complicated, it needs to consult the national standard size and draw step-by-step. Based on the establishment of Access database, we use Visual Basic to develop corrugated box drawing system on the AutoCAD platform. The corrugated box drawing system development has the characteristics of parameter standard and using easily. Users only need to select the box type in the main interface of the software and input the important parameters, the two-dimensional expansion diagram and three-dimensional model can be quickly obtained, which greatly improves the efficiency of corrugated box drawing, reduces labour and production cost.

Aerator is an aquaculture device extensively applied. It is mainly used to adjust dissolved oxygen content in the aquaculture water so as to guarantee fishes in the water will not be die from oxygen deficit. However, at present, the aerator requires higher for experience and has intensive work strength of aquaculture workers. In order to improve the reasonability, accuracy and convenience of aerator, this paper designs remote monitoring system and develops software of aerator based on Java Web and PhoneGap, including overall design of remote monitoring system, Java Web application, PhoneGap mobile frame application, SQL Server database application. It realizes remote monitoring of aerator through PC or smart phones.

In order to reduce the high fuel consumption of the shipping industry, a new type of quantum energy saver device is studied and developed. According to a period of time to use the energy saving device and the users' feedback, by recording the fuel consumption of diesel engine usage, and comparing the changes in fuel consumption before and after the installation of quantum economizer in the same ship, it can reflected the ability of the fuel consumption. After analyzing the data, it shows that the installation of quantum economizer can significantly reduce the fuel consumption of a diesel engine ship. The analysis and application of this paper can play an important role in saving energy and reducing consumption, and provide a reference for other related research.

In order to reduce diesel fuel consumption, this paper conducts the research in view of a new type of quantum energy saving device, and then produce the sample and applied on automobile engine, Detect fuel use of an automobile by automobile fuel saving technology as-sessment methods from the department of transportation. Compare the changes of fuel use be-fore and after installation of quantum energy saving device on the same car, and give the feed-back of energy saving capability. The result shows, after installed quantum energy saver, both fuel consumption and the smoke of tail gas has decreased. The analysis and application of this paper carry out the conclusion that the quantum energy saver can play an important role in en-ergy saving and emission reduction, and provide a reference for other related research.

Due to the complexity, multiplicity and randomness of table tennis matches, the paper presents skill and tactic diagnostic model for table-tennis matches of elite athletes with artificial neural network and genetic algorithm. A back propagation network is used to build basic structure of the model and genetic algorithm is established to optimize the connection weights and threshold values of the neural network to improve the prediction precision and congestion performance. The application results show that it is an effective tool to provide decision support for table-tennis players.