| Summary: | 碩士 === 國立臺灣海洋大學 === 機械與機電工程學系 === 101 === The earth’s water distributed over every corner, including: oceans, glaciers, rivers, lakes, underground rock formations and the atmosphere; the various premises of the water followed the hydrological cycle operation of the system, so that water can be endless. Human resources can be used directly as the freshwater rivers, such as lakes and groundwater, accounting for only 0.8% of the global amount of water. It can take advantage of global freshwater resources, which are very precious and rare. Human kept exploiting and interfered the natural hydrological cycle and environment, which made the problem a global issue. In view of this, the water quality objectives must be established for the immediate detection capabilities. If we can fully improve the detection limit, sensitivity, accuracy, and speed, not only can we improve aquaculture productivity and competitiveness, but we also can save water resources more effectively.
The common variety of water quality testing projects include nutrients, heavy metals, turbidity and temperature targets; the former two used the large analytical instruments for analysis, but they faced a bulky instrument, removal difficult and the problem about being unable to test in time on the spot, and the staff had to bring it back to the lab after sampling analysis , which was rather costly; the latter two are already on the market and there are all kinds of testing instruments, but they cannot detect multiple projects simultaneously, for complex water environment, they cannot effectively reflect water quality. The purpose of this study is to provide more than one goal, real-time, automatic and remote monitoring of water quality testing system and other functions, in order to solve the above detection technology gap.
In this study, the use of MEMS technology to create a chip for nitrite and hexavalent chromium detection, and the other one for turbidity and temperature detection with optical fixtures and to use embedded systems using CompactRIO 9074 (CRIO, National Instruments, USA ) and Labview software to further integrate optical detection, chemical reactions, circuit analysis, microfluidic manipulation techniques and so on, which successfully produced an automated testing a variety of projects and ion detection concentration of ppb (μg / L) level, A wireless and multi-objective remote system for real-time monitoring of water quality. Its advantages are automatic quick analysis of real-time, high-precision, non-polluting and fewer reagents. The system is different from the multi-project automated analyzer on the market, which costs hundreds of thousands to several millions. It only costs about ten thousand dollars, so it can enhance the competitiveness of its commercialization. The results conform spectrophotometry, turbidimetry and resistance temperature detector(RTD), which successfully measure the nitrite, hexavalent chromium, turbidity and temperature, confirmed the detection system does have a precise measurement Asia nitrate, hexavalent chromium, turbidity and temperature capabilities. It is believe that we continue to make our great efforts to monitor the environment (such as drinking water, pond, lake, river and sea water) highly helpfully, we can absolutely create new water quality testing industry.
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