Design and implementation of a low-cost sensor network to monitor environmental and agronomic variables in a plant factory

A. P. Montoya, F. A. Obando, J. A. Osorio, J. G. Morales, M. Kacira

Research output: Contribution to journalArticlepeer-review

Abstract

Monitoring equipment for plant-factory automation requires big capital investments. Low-cost open-source microcontroller platforms have been employed in agriculture to monitor and control different variables of importance for crop production. A low-cost plant-factory monitoring system for measuring air temperature, relative humidity, plant-leaf temperature, pH, electrical conductivity, dissolved oxygen and temperature of the nutrient solution is presented here. All the information is recorded in a micro SD memory and can be accessed by Bluetooth in real-time. The developed system was tested during a cycle of a lettuce crop in a research plant-factory facility. The quality of the collected data was evaluated and compared with a well-known research-grade monitoring system. The low-cost sensors showed an easy to correct bias when were compared to those of research-grade, with a correlation coefficient over 0.96. The results showed that low-cost systems, like the one implemented here, are a good alternative for monitoring environmental and physiological variables in controlled environmental agriculture facilities.

Original languageEnglish (US)
Article number105758
JournalComputers and Electronics in Agriculture
Volume178
DOIs
StatePublished - Nov 2020

Keywords

  • Agriculture 4.0
  • Arduino
  • CEA
  • Low-cost sensor-network
  • Plant-factory

ASJC Scopus subject areas

  • Forestry
  • Agronomy and Crop Science
  • Computer Science Applications
  • Horticulture

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