Creative Commons License 2016 Volume 3 Issue 6

Evaluation of energy consumption and environmental conditions of a wireless network automated fly trap of greenhouse tomato plants

Federico Hahn, Alejandro Guerrero, Egbert Cruz, Martin Hidalgo

Emerging wireless networks have become a useful tool for agriculture fields and greenhouses. An accurate
monitoring of pest insect population in greenhouses allows to take proper decisions on biological control
applications. Treatment success, strongly rely on early detection of population sprouts and pest dynamics. A simple PVC trap was designed using infrared-phototransistor modules using light and molasses as attracting baits. XBee modules operated the trap, detecting automatically the flies using an innovative capacitor as a counter; the module acquired the capacitor voltage after ten minutes and transmitted its value to a gateway. One node is connected to each of the four traps distributed in selected locations within the greenhouse and the information gathered every ten minutes is sent to a gateway composed of an Arduino ONE board, that stores the data and transmits SMS (Short Message Service) to a smartphone. SMS were sent when the first fly was caught and when a certain threshold of flies is detected within the four nodes. The wireless system was evaluated inside a tomato greenhouse, measuring the temperature and relative humidity inside the trap every 5 minutes during ten days; temperature was also monitored outside the trap. Temperature within the trap was found to be 1°C colder at noon at measurements taken 2 m over the soil within the tomato crop. The effect of power loss in the transmission signal as it crosses through plant biomass was studied. Tomatoes reduced signal transmission to 15 m, while leaves reduced transmission to 25 m, so a PVC tube was added to the trap in order to lift the XBee module over the crop. Energy consumption was optimized using only two white LEDS for attracting flies from 7 to 10 PM. Energy dosage could be optimized by controlling the lightning period based on the trap temperature.


Keywords: energy consumption, automated trap, wireless communication, transmission distance, tomatoes


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Entomology and Applied Science Letters is an international double-blind peer reviewed publication which publishes scientific research & review articles related to insects that contain information of interest to a wider audience, e.g. papers bearing on the theoretical, genetic, agricultural, medical and biodiversity issues. Emphasis is also placed on the selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance. In addition to full-length research articles and reviews, the journal publishes interpretive articles in a Forum section, Short Communications, and Letters to the Editor. The journal publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance.

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Institute of Pharmaceutical Sciences (IPS) , University of Veterinary and Animal Sciences, Lahore Pakistan.
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Entomology and Applied Science Letters supports the submission of entomological papers that contain information of interest to a wider reader groups e. g. papers bearing on taxonomy, phylogeny, biodiversity, ecology, systematic, agriculture, morphology. The selection of comprehensive, revisionary or integrated systematics studies of broader biological or zoogeographical relevance is also important. Distinguished entomologists drawn from different parts of the world serve as honorary members of the Editorial Board. The journal encompasses all the varied aspects of entomological research.