Abstract
Increasing the efficiency of water supply networks is essential in arid and semi-arid regions to ensure the supply of drinking water to the inhabitants. The cost of renovating these systems is high. However, customized management models can facilitate the maintenance and rehabilitation of hydraulic infrastructures by optimizing the use of resources. The implementation of current Internet of Things (IoT) monitoring systems allows decisions to be based on objective data. In water supply systems, IoT helps to monitor the key elements to improve system efficiency. To implement IoT in a water distribution system requires sensors that are suitable for measuring the main hydraulic variables, a communication system that is adaptable to the water service companies and a friendly system for data analysis and visualization. A smart pressure monitoring and alert system was developed using low-cost hardware and open-source software. An Arduino family microcontroller transfers pressure gauge signals using Sigfox communication, a low-power wide-area network (LPWAN). The IoT ThingSpeak platform is used for data analysis and visualization. Additionally, the system can send alarms via SMS/email in real time using the If This, Then That (IFTTT) web service when anomalous pressure data are detected. The pressure monitoring system was successfully implemented in a real water distribution network in Spain. It was able to detect both breakdowns and leaks in real time.
Highlights
Increasing the value of water as much as possible, especially in the arid and semi-arid zones of southern Europe [1] means improving the performance of water distribution networks
A high percentage of the water distribution networks that operate in large cities have leaks that cause significant water losses
The architecture of low-power wide-area network (LPWAN) networks is simple: the final nodes collect the data recorded by the sensors and connect directly to the base station to transmit the information and store it in a cloud database, where the data are analyzed and sent to be visualized by internet-connected devices (Figure 1)
Summary
Increasing the value of water as much as possible, especially in the arid and semi-arid zones of southern Europe [1] means improving the performance of water distribution networks. A high percentage of the water distribution networks that operate in large cities have leaks that cause significant water losses These inefficiencies are contrary to the European Commission’s reference document [3], which declares that water is a resource that must be managed sustainably and reasonably. The decision-making process is based on objective data [4] For this reason, numerous technologies have been developed to monitor hydraulic and water quality variables.
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