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Testing Data Analysis System for Dissolved Oxygen in Water Based on Grails, Spring Framework and Hibernate

Author: LiMengFei
Tutor: SunLi
School: Anhui Agricultural University
Course: Applied Computer Technology
Keywords: Dissolved oxygen sensor Appear Agile Development Ajax
CLC: X832
Type: Master's thesis
Year: 2010
Downloads: 166
Quote: 0
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Abstract


With today's world the rapid development of industry, agriculture, the large amount of industrial waste water, irrigation and drainage discharge to rivers and lakes, at the same time, about 80% of China's urban sewage directly discharged without treatment, mostly in small towns and the rural sewage disorderly discharge status, making many parts of the deteriorating water quality, water pollution and water shortage is worsening, there is an urgent need for timely monitoring and effective treatment of sewage. Among them, the dissolved oxygen content is an important indicator of water quality monitoring. Dissolved oxygen is dissolved in water or oxygen molecules in the liquid, expressed as a DO. Dissolved oxygen conditions, the measurement of dissolved oxygen in water is indispensable to the survival of aquatic organisms, are of great significance for the development of environmental monitoring and aquaculture. If more than one detection point networking, but also long-term, on-line detection method based on fluorescence quenching mechanism of the dissolved oxygen content is a new optical oxygen detection method can be used to build the dissolved oxygen in real-time, on-line, automatic detection system; a large area of ​​the waters of the dissolved oxygen content monitoring. The detection method has Needless to oxygen consumption, the advantages of fast response, high stability, high sensitivity, long life, and immune to electromagnetic interference. C8051F MCU new optical dissolved oxygen probe method research for the plurality of detection points in the waters of a large area of ​​networking, typical sections of dissolved oxygen parameters in real time, online monitoring, research building detection display platform based on the the Grails Spring Hibernate composite frame dissolved oxygen, dissolved oxygen in water in different waters at different temperatures changes; AJAX asynchronous accurate, real-time, online display of dissolved oxygen content and track display The result of the process. Grails Web framework based on MVC pattern, this agile development in the configuration file easier, more flexible in terms of achievement of objectives, while reducing the data interface and business logic interface coupling, this hierarchical and parallel development, not only conducive to the software reuse reconstruction, and easy maintenance of the system expansion. The main tasks include the following: (1) a summary of the design of the project requirements, a two-stage system architecture design, first the waters of dissolved oxygen detection system architecture, and then use VPN technology to build a large basin of water dissolved oxygen Real-time rendering of a virtual private network. (2) develop technical solutions, to determine the structures of the language and framework of the project development, java language and the Grails Spring Hibernate combination based on agile development framework, to build a project development environment and design a database ER diagrams. (3) the function modules of the system were stratified according to the system architecture for the next bit plane data acquisition layer, the data transport layer PC data acquisition layer, data-rich layer, data rendering layer and the data processing layer function module for the detailed design. (4) the use of Java serial communications API, full-duplex communication between the detection system wireless communication network port between PC program (Java is open, platform-independent, and object-oriented features) to achieve water real-time transmission of dissolved oxygen detection value; use of Java and its javax.comm control to complete the design can be greatly simplified serial operation, and combined with the C8051F040 microcontroller, photochemical and photoelectric detection technology, real-time detection of dissolved oxygen data . (5) Construction of dissolved oxygen detection platform for centralized collection and analysis of the test data, while providing the processing and storage of data acquisition logic, historical sampling data inquiries, to achieve fast retrieval of massive data; the waters of dissolved oxygen in water comparison of the temporal and spatial decision-making to provide reliable data analysis needs.

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Environmental monitoring > Water quality monitoring
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