Browsing by Subject "Microcontroller"

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Open Access
Design of an economical and reliable net-metering device for residential consumption measurement using IoT
(IEEE, 2020-11) Jamal, H.; Arshad, M. Nauman; Butt, Y.; Shafiq, H.; Manan, A.; Arif, A.
With the proliferation of decentralised power generation technologies and smart grid infrastructures, residential renewable energy generation (REG) has burgeoned to become intrinsic to modern power grids and is expected to play a fundamental role for the realization of netzero energy buildings to cater to the ever-escalating energy demand. The integration of domestic REG into the utility grid necessitates a medium of intelligent devices to perform net metering operations. Henceforth, we propose one such cost effective smart net-metering device for household REG systems with in-built wireless bi-directional communication based on Internet of Things (IoT) technology. Net metering operations are implemented using a microcontroller to synchronously collect, analyze and transmit data from sensors installed at the utility to consumer and REG to utility sides to both an offline display and an online server via a WiFi module interfaced to the microcontroller. We successfully implemented a prototype device for real-time energy monitoring over a sustained period of time, yielding accurate power generation and energy transfer statistics with remote-control operations. These results demonstrate the considerable potential for the prototype to be a stimulant in catalysing our eventual shift to decentralised power generation.
Open Access
A new wireless asynchronous data communications module for industrial applications
(2013) Ege, Y.; Şensoy, M.G.; Kalender O.; Nazlibilek, S.; Çitak H.
All the sensors such as temperature, humidity, and pressure used in industry provide analog outputs as inputs for their control units. Wireless transmission of the data has advantages on wired transmission such as USB port, parallel port and serial port and therefore has great importance for industrial applications. In this work, a new wireless asynchronous data communications module has been developed to send the earth magnetic field data around a ferromagnetic material detected by a KMZ51 AMR sensor. The transmitter module transmits the analog data obtained from a source to a computer environment where they are stored and then presented in a graphical form. In this design, an amplitude shift keying (ASK) transceiver working at the frequency of 433.92 MHz which is a frequency inside the so called Industrial Scientific Medical band (ISM band) used for wireless communications. The analog data first fed into a 10-bit ADC controlled by a PIC microcontroller and then the digital data is sent to the transmitter. A preamble bit string is added in front of the data bits and another bit string for achieving synchronization and determination the start of the data is used. The data arriving at the receiver is taken by the microcontroller and sent to a LCD display as well as the serial port of a computer where it is written in a text file. A Visual Basic based graphics interface is designed to receive, store and present the data in the form of graphical shapes. In the paper, all the work has been explained in detail. © 2013 Published by Elsevier Ltd. All rights reserved.