水下低功耗浊度仪系统

Low-power underwater turbidimeter system

针对水下长时间浊度数据采集的问题,研制了一种水下低功耗浊度仪系统。通过对水下浊度测量方法的分析比较,选取了散射法作为浊度的测量原理。基于以MSP430F149为核心的微控制芯片,对电路进行了外围设计,实现了系统的低功耗性能;考虑到装置工作在0~6 000 m的水深范围,系统必须要承受高压,故对装置的探头和壳体进行了抗压和密封设计;在实验室用高岭土配制出了19种不同浓度的浊度液,通过与WT-RCOT型浊度仪数据进行对比,对系统进行了浊度标定,并用浊度仪系统在钱塘江进行了浊度测试,在试验过程中采集到了相应的浊度数据,并绘制出了浊度变化曲线。研究结果表明,该浊度仪系统具有低功耗、高抗压、高密封性能,能够满足水下长时间离线式浊度采集要求。

Aiming at the requirement of turbidity collecting underwater for a long time,a kind of underwater-low power consumption-turbidity measuring system was developed.Through the analysis and comparison of different methods of turbidity measurement,scattering method was selected for turbidity measurement principle.Based on MSP430F149 core micro-controller chip,the outer part also was designed elaborately,and the performance of low power was realized.The equipment must be working well in the high pressure as the work environment is 0~6 000 m underwater,so the probe and shell were designed as sealed and be able to resist pressure.The turbidity was calibrated through contrasting the result of different concentrations of kaolin-turbidity liquid that this instrument measures with WT-RCOT turbidity instrument.In the Qiantang River,a lot of dates were collected by this instrument,and the turbidity curve was protracted.The results indicate that the turbidity meter system has low power consumption,high compressive strength,high sealing performance,and it is able to collect turbidity data offline underwater for a long time.