Figure 1. IoT board design developed to measure environmental values
The developed card has the ability to both collect and send media data
to the upper layer and fulfill the order from the upper layer. For this
reason, it can act as both a client and a server. The energy consumption
and data transmission rates of the developed card are given in detail in
the findings part of the study, both numerically and graphically.
Designed Edge Computing Architecture
It would be appropriate to examine the general architecture of the study
in four main sections. The entire architecture of the study and the
designed layers are shown in Figure 2. If we order these four parts
hierarchically starting from the lowest layer, we can say that the node
layer, the edge layer, the decision layer and the training layer. There
is a semantic structure in this hierarchical order. It has been designed
in line with the needs of the greenhouse areas selected for the test
environment of the developed infrastructure. The configuration of the
node layer, which is the most basic layer and created in the real
greenhouse environment, will be explained. There are IoT_TH cards
(N1, N2, Nn) in the node
layer. As Ɐ(Nx) → ⱻ! (THx), each
development board has a temperature and humidity sensor
(TH1, TH2, THn). IoT_TH
cards developed to receive environmental data are located at different
locations of the greenhouses. In addition, there are heating and cooling
systems connected to the IoT_TH cards that will be activated in line
with the information coming from the upper layers.