Portable Machine to Machine Systems for Distance Phisico-Chemical Parameters of River Water Monitoring

Abstract

River water quality monitoring is very important since river water is also used as a source of fresh water besides for agricultural and farming purposes. Manual river water quality monitoring which is done by taking river water samples in a period of time and analyzing it in the laboratory has limitations in that the actual condition of river water could not be monitored continuously. The objective of this article is to monitor the physico-chemical parameters of river water including potential of Hydrogen (pH), temperature, and Total Dissolved Solid (TDS) continuously in a distance. As a prototype, the proposed architecture facilitates the river water quality could be monitored from a long distance far away from the river location as from the government office building. The proposed system consists of data acquisition part, base station part, wireless data communication system, and cloud for storing and displaying measured parameters. The proposed system was implemented by using two LoRa32u4 boards, a NodeMCU board, and blynk cloud platform. Compared to the commercial measuring instrument, the laboratory scale testing results showed that the measurements of the proposed system have the average measurement difference ( p  ) of 0.2%, 0.7%, and 4.4% for TDS, pH and temperature respectively. The proposed system was tested in an actual field where the data acquisition part was located at the river in Ngawi regency while the base station part was placed 100 m apart. The actual field test results showed that the proposed system was able to measure all three water parameters consistently.