Design and Implementation of a New Green IoT Gateway Module

In this paper, a new green IoT gateway module is proposed that has been designed and implemented, called as (GIGM), formulated by mainly microcontroller unit (MCU), Wi-Fi module and load controlling latch switch (LCLS) module. The proposed GIGM differs from the others upon two aspects: (i) implementing this green IoT gateway module into hardware that is the first attempt anywhere, whereas, the conventional practicing is the theoretical based, (ii) designing a novel LCLS module integrated by transistor, opto-coupler and TRIAC, where no one considered this issue in such a way. The main technique in designing LCLS is to store the present command state that is received from MCU for operating a particular load. Although the load being ON, the MCU turns OFF without effecting LCLS that remains at such state until the next command is given. Because of the dead state of MCU, no more power is absorbed resulting the less power consumptions regarding the proposed GIGM. In order to evaluate the proposed GIGM how does it work, a series of experiments was conducted. In this regard, 5 loads were connected with GIGM. For clarifications, the total observations were made into three ways: First, whenever the load was increased from 1 to 5 including MCU being ON, that is so-called the switching state the power consumptions moved from 1.1W to 1.2W excluding the load power consumptions. Second, when the dead state of MCU being started in case of loaded condition, the power consumption was constantly 1W, and Third, Power consumption was frequently 0.7W for no-loaded condition while the dead state of MCU being started. In contrast, the power consumption issue in the literature is not clearly mentioned anywhere. Thus, it can be said that, our proposed GIGM works significantly well in terms of power consumptions as well as power savings in both loaded and no-loaded conditions comparing to the existing approaches.