Automated Water Quality Survey and Evaluation

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Automated Water Quality Survey and Evaluation

Using an IoT Platform with Mobile Sensor Nodes

Teng Li1,*, Min Xia1, Jiahong Chen1, Yuanjie Zhao2and Clarence de Silva1Department of Mechanical Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada;Faculty of Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada;Received: 31 May 2017; Accepted: 24 July 2017; Published: 28 July 2017


In this survey it can understand that they have used Mobile Sensor Nodes here.
Various water parameters such as flow rate, temperature, air pressure, pH value, dissolved oxygen, electrical conductivity, oxidation-reduction potential, nitrogen, phosphate, organic matter, microorganisms, can be monitored through automated sensing. In this developed platform, five sensors have implemented in each Mobile Sensor Network to measure five representative parameters. They are as Temperature sensor , pH Value sensor ,Dissolved Oxygen (DO) sensor ,  Electrical Conductivity (EC) sensor and Oxidation-Reduction Potential sensor. Each sensor node consisting of five sensors, a control unit, a data processing unit, and two power supply modules. To avoid the inaccurate measurements caused by surrounding objects the five sensors have held separately through a PVC structure. All electronic components have deployed inside a waterproof floating buoy. Data is processed at the on-board processor, Raspberry Pi 3, and then transmitted to the BS through a Wi-Fi or Zigbee radio transmitter.
To avoid data missing due to package loss or communication failure during data transmission, recently collected data has stored at the local data logger. A 3.7 V, 6600 mA·h ion polymer rechargeable battery has used to provide power for sensing and wireless transmission. It also stores the harvested energy from a 23,016,020 mm solar panel.



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