水質(zhì)自動(dòng)監(jiān)測(cè)系統(tǒng)的研究
[Abstract]:In the content of environmental protection, one of the main tasks is the protection of water resources. With the aggravation of environmental pollution, people's domestic water consumption has been greatly affected. Therefore, it is very important to monitor the water quality of main water sources such as rivers, reservoirs and groundwater. Although our country's land area ranks third in the world, but because of our country's population, per capita water resource is quite scarce. In addition, with the development of science and technology, people wantonly destroy the environment and pollute water resources, and the safety of water quality of major rivers and lakes is at risk, which has seriously affected the strategy of sustainable development of our society. Has become a constraint on social development. The automatic water quality monitoring system can detect the water quality of the current reach in real time, and upload the parameters of the water quality to the environmental protection department. Once the water quality is abnormal, it can take protection measures in time. Government departments in China attach great importance to the construction of water quality monitoring projects, which is the main technical means of water resources protection in China, and has great strategic significance. In this paper, based on the principle of water quality protection, the water quality automatic monitoring system is designed. In order to meet the technical requirements of normal power supply and sequential action of the automatic monitoring system, on the basis of the overall design, the main electric circuit, the control circuit, the communication circuit and the water and air circuit are designed. In order to realize the integrated control and management of the whole monitoring system, the schematic diagram of electric circuit and the system diagram of water sample analysis and pretreatment are worked out. The hardware platform of Siemens PLC and industrial control computer is combined. In this paper, the development of the control configuration software and the design and realization of the data processing in the system and the data transmission among the monitoring instruments by using the basic theory of PLC control are designed and realized. The design of the control software on the industrial control PC and the design of the I / O point of PLC synthesizes the above design ideas, realizes the whole system construction work, has constructed a set of complete monitoring system, and has carried on the test to the system. From the test effect, the parameters of the monitoring are accurate, and there is no parameter mutation in the monitoring process. The test results are also compared with the local environmental protection department water quality monitoring standard data, and the comparison results verify the reliability of the system.
【學(xué)位授予單位】:華北電力大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:X84
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