Development of an Adaptive Rainwater-Harvesting System for Intelligent Selective Redistribution

Alexander Liu Cheng, Luis Moran Silva, Martin Real Buenano, Nestor Llorca Vega

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)


This paper presents an adaptive rainwater-harvesting (RWH) system based on a rainwater-collecting unit that (1) ascertains baseline water-quality in its collected rainwater via Ph- and turbidity sensors, and (2) redistributes it to designated toilet-tanks and/or irrigation points. Each unit is integrated with an XBee S2B antenna to enable cost-effective and energy-efficient mesh capabilities for inter-unit communication when two or more units conform the system. Moreover, each unit is also an Internet-of-Things (IoT) device that transmits water-tank levels and sensor-data to a local supervising microcontroller (MCU) via Open Sound Control (OSC). This MCU is, in turn, capable of communication with a cloud-based data plotting / storing and remote-control platform - viz., Adafruit IO - via Message Queueing Telemetry Transport (MQTT). The interface with Adafruit IO enables a remote administrator (a) to monitor water-tank levels and sensor readings, and (b) to execute manual overrides in the system - for example, any or all of the units may be shut-down remotely. When only one unit conforms the system, its water-tank services the toilet-tanks and/or irrigation points connected to the unit. When two or more units conform the system, their water-tank outputs are physically linked, enabling any unit to contribute to the servicing of a variety of connected toilet-tanks and/or irrigation points. In both single or multi-unit configurations, water redistribution is impartial to any end-point at initialization, yet over time the system identifies which end-point(s) require(s) water with a higher frequency and selectively prioritizes servicing to it/them to guarantee prompt refill / supply. The present work is part of ongoing developments of features and services that attempt to imbue the builtenvironment with intelligence via Information and Communication Technologies (ICTs).

Original languageEnglish
Title of host publication2019 IEEE 4th Ecuador Technical Chapters Meeting, ETCM 2019
Number of pages5
ISBN (Electronic)978--1728-13764-3
Publication statusPublished - 2019
Event4th IEEE Ecuador Technical Chapters Meeting, ETCM 2019 - Guayaquil, Ecuador
Duration: 13 Nov 201915 Nov 2019


Conference4th IEEE Ecuador Technical Chapters Meeting, ETCM 2019


  • Adaptive Architecture
  • Cyber-Physical Systems
  • Intelligent Built-Environment
  • Internet-of-Things
  • MQTT


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