摘要：In order to establish the water pollution moni-toring system of the Internet of things, this paper ex-amines the test accuracy of electronic sensors at dif-ferent positions in the water, analyzes the test accu-racy from three aspects of test depth, origin pollution distance and vertical distance from riparian by the single factor and response surface analysis. The re-sults show that the most accurate detection position for COD value of water is: the test depth is0.15 m, the origin pollution distance is 15 m, and the vertical distance from riparian is 1.5 m. When carrying out the electronic sensor test at this position, the accu-racy of COD value of water can reach 97.7%.
关键词：Intermet ofthings;Response surface;Waste water sampling position;Pollution source analysis
