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Brazilian Students Create Intelligent Canine Feeder

Sesi de Cianorte's students have developed an RFID-enabled device that identifies each pet and provides food in the proper measure.
By Edson Perin

At the beginning of the project and following a survey, 7th Connection found that although there were power feeders available on the market, none allowed them to determine the amount of food being administered to each animal, nor did any offer an interface for sending and receiving SMS text messages or email to owners.

This, then, offered an opportunity for innovation, Alanis says. To produce such a personified machine, the team concluded that RFID technology was the best alternative. "Each smart tag contains the data of each dog," he explains, "as well as the specificities of its food."

The iPET feeder identifies a dog, serves the right amount of food and informs the owner via smartphone.
The device connects to an open Internet of Things platform known as NodeMCU. "The machine is initially designed to fit a beagle, considered medium-sized and standard for some experts," Alanis says. "In this way, the programming was done to offer 400 grams of feed per day in four doses, so there are spaces of time in which, even with the RFID tag next to the device, the dog will not receive food. It's available at will and controlled by a level sensor, to inform the owner when the animal consumes liquid."

After months of preparation and course work, the group participated in the South Regional Stage of the FLL Robotics Tournament, held in Curitiba on Feb. 17-18, 2017. "Thanks to the commitment of all our team, especially the students, we managed to qualify for the national stage in Brasilia," Alanis reports. "In addition to qualifying, we were also given the Gracious Professionalism award—Lego's award for teamwork for professionalism and dedication."

The machine contains two RFID antennas, with which the feeder communicates with the animal's personalized tag, causing the machine to run if it is the correct time, and sending an email and SMS message to the owner stating that the dog has been fed and/or hydrated. For these functionalities, two Mifare kits were used, along with an MFRC522 RFID reader module based on an NXP Semiconductors RFID chip. The module operates at 13.56 MHz, with low power consumption and small dimensions, allowing for the contactless reading and writing of cards.

In addition to the tags, reader module, nodMCU and cellular interfaces, the team is studying the implantation of a sensor that would determine how much an animal has eaten from the quantity served, via a digital scale. "If there is more than one animal," Alanis notes, "the machine recognizes them, releasing the amount individually pre-set in the program."

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