水产养殖水质监测温度补偿系统

水产养殖水质的准确监测对保证水产品健康养殖至关重要，为了克服温度对溶解氧传感器、pH传感器的影响，重点对二者进行了温度补偿研究，采用三次多项式拟合法对溶解氧电极进行了温度补偿分析，采用最小二乘法对不同温度段的电压与pH 关系进行了线性分析，最后得出两者的温度补偿模型。试验结果表明，该温度补偿系统所测得溶解氧与pH平均相对误差分别为1.82%和1.72%，实现了对水产养殖水质因子的准确监测，对现代水产养殖业水质监测具有良好的应用前景。

Temperature Compensation System for Aquaculture Water Quality Monitoring

Accurate aquaculture water quality monitoring is essential to guarantee the health aquatic breeding. To eliminate the effect of temperature on dissolved oxygen sensor and pH sensor, this study focused on temperature compensation. Cubic polynomial fitting method was adopted to conduct temperature compensation analysis of dissolved oxygen electrode, and the least square method was selected to conduct linear analysis of the relationship between pH value and voltage. Finally, temperature compensation models for dissolved oxygen sensor and pH sensor were obtained. The experimental results showed that the average relative error of dissolved oxygen and pH in the temperature compensation system was 1.82% and 1.72%, respectively. The temperature compensation system could meet the requirement of water quality monitoring in aquaculture, and had a brilliant application prospect.