The goal of the project is to equip a culture in aquaponics under a greenhouse in the building of our school during the year 2017-2018 and it will work in partial autonomy. That team will also aim to design and build an automatic food distribution system for the fish that will be grown in our greenhouse, which will allow them to be away for a period of time without worrying about their diet.
The main challenge is to find the right balance between the fish population, the food supply, the bacterial population and the cultivated vegetation: an anomaly of one of these parameters can harm the ecosystem. This project will be part of the "Open IOT Challenge 4.0". The result will be available in 30 March 2018, we will continue to give you the news about it.
The team is composed of 2 Polytech Grenoble sectors. The first sector, Materials:
- Antoine Ronco and Dorian Reboullet in the 3rd year
- Apolline Limousin and Eglantine Lejeune in the 4th year
The second sector, Computing and Electronics of Embedded Systems:
- Bastien Bonte and Faustine Michel in 3rd year
- Erik Nayan and Paulo Naves in 4th year
The food distributor
In order to feed all the fish without any human intervention over a prolonged period, they use a food distributor that could be responsible for delivering a daily dose of food to the fish. This dispenser must be able to be loaded with enough food to feed the fish for at least a week.
Several tracks start to emerge for the shape of this dispenser: a classic circular dispenser with pre-sized food portions, or a model inspired by traditional cereal dispensers where the grains are distributed by the rotation of a worm whose rotation would be automated here. We opted for the second model because it is easier to access and has the advantage of allowing control of the level of available food, unlike the circular dispenser which is submerged.
In order to measure pH and water temperature, but also greenhouse and soil temperature, greenhouse humidity and water level. So STM32 microcontroller, Linux system and LoRa expansion card could be used .The sensors as well as the STM32 cards are protected by boxes that we will design with the help of the FabLab of the UGA .
They opted for a plexiglass tank (transparent material allowing the control of the level of food) and all the printed parts such as the worm, the boxes of protection will be in ABS because that is more resistant to water than PLA. We plan to try to design the 3D printing models ourselves, but also to use some of the 3D model library print models available on the internet.
We realized the programming of the water level sensor and carried out some tests to verify its good functioning. Regarding the LoRa module, we studied the code produced by the RICM the previous year and we modified it to adapt it to the needs of our project.
This is a project to control a small system to make it a balance between fishes and plants, to let them live together in the green house. In the project, they will learn how to control the weather with sensors and design the system to feed the fish.