GSM-based System Research Articles

A GSM-Based Fault Detection on Overhead Distribution Lines

Power distribution in Ghana is managed by the Electricity Company of Ghana (ECG) which is responsible for ensuring accessibility of electricity to consumers. One of the challenges that affect the effective operation of ECG is the slow response to faults on the overhead distribution lines. Fault detection on the distribution lines is a very tedious activity but a necessary procedure to ensure efficient power distribution to consumers. This paper seeks to design a system that can detect faults, the type of faults and their location before they cause any casualties to transformers and other power system equipment. This would replace the primitive method of patrolling and manual inspection of faults currently done by the Electricity Company of Ghana (ECG). This objective was achieved using a GSM-based system on an Arduino platform and ATmega 328P microcontroller to locate the occurrence of faults efficiently. Faults are introduced into the system by triggering the type of fault on the Arduino platform which opens the corresponding relay of the line fault. The opening of this relay sends a signal to the microcontroller and a corresponding LED which switches to display the type of fault. The microcontroller then communicates to the GSM module which displays the said fault and location on a display screen with the help of a virtual terminal. This system was tested under the various unsymmetrical faults to show the efficiency of the system using C++ programming. The simulation shows that the system offers a fast fault response time.

IOT-based and Auto Firmware System for Transmitting Notifications and Advertisements via GSM/GPRS Modems

Recently, it has been a kind of trend that many applications adopt IOT-based SMSservices for delivering notifications and advertisements (i.e. ads) to their users. As a result,we are mobilized to design and develop a GSM-based system within this paper to sendalerts and ads in our faculty community as SMS messages. This system is called"NATEGA" as an abbreviation of "Naïve and Auto firmware for Transmitting Exam Gradesand Advertisement via SMS messages". The Hardware part of NATEGA system consistsof three main modules; GSM/GPRS Module (GGM), USB-to-TTL bridge Module (UTM),and DC-to-DC Converter Module (DDC). Any PC or laptop can be employed for executionof the NATEGA program (i.e. software part) which is developed in C# programminglanguage. The efforts, that have taken place intentionally during design of NATEGA system,led to support both Push paradigm and Pull paradigm concepts in sending notifications andads. Four performance metrics are used to validate and verify the feasibility of NATEGAsystem. They are Message Construction Time (MCT), Message-to-Modem DeliveringTime (MMDT), SMS Delivery Report Time (SDRT), and Success in Delivering SMS Ratio(SDSR). Time-based metrics (MCT, MMDT, and SDRT) are chosen for evaluation becausethe provision of timely information is imperative for applications of delivering notificationsand ads

The development of a real time, interactive water level monitoring system through SMS with AC load control

Flooding and water level rise is a constant problem Filipinos encounter every year. The Philippines has a reasonably well-defined rainy season due to the monsoons. To counter the adverse effects of this potentially disastrous phenomenon, modern flood monitoring and forecasting systems are indispensable. Thus, the utilization of a comprehensive GSM-based system for monitoring water level of streams, lakes, rivers and other bodies of water in areas prone to flooding is essential to effectively increase the people’s awareness in real time. The system works by receiving water level update queries through text messaging from any cellphone number and texts back the accurate water level (in feet and inches) based on the actual reading from the system’s sensor. The water level update can be done “on demand” or every 10 minutes. The system can analyze the water level patterns such as the rate of water level rising or receding and includes its observation on the SMS to be sent. It also has integrated anti-theft features such as intruder sensor and alarm and the system locator through GPS (Global Positioning System). They are designed to protect the system against thieves and intruders. The system is also capable of controlling an AC (Alternating Current) load. This allows the system to be used in various applications that require water monitoring and automatic control. It can control AC loads of up to 2000 watts. The control function can be “automatic” or through SMS (Short Message Service) depending on the application.

Intelligent Wildlife Tracking Using Ubiquitous Technological Suite

This paper proposes an intelligent system to track location of an individual animal or animals in wildlife sanctuary. Existing systems makes use of various technologies such as RFID, GPS, GSM, etc. RFID based systems either lack in range if passive tags are used or lack in cost effectiveness if active tags are used. Similarly, GSM based system becomes costlier and requires constant network connectivity. Hence this paper proposes a Wi-Fi based tracking system. Proposed system makes use of ubiquitous technology which encourages the use of Wi-Fi Transceivers. The Stationary Wi-Fi Transceiver consists of ESP8266 NodeMCU development board which detects the Mobile Transceiver. The Mobile Transceiver consists of ESP8266 NodeMCU attached to animals. The Stationary Wi-Fi transceiver detects Mobile Transceivers under its vicinity and sends the data to other Stationary transceiver through hop based transmission and ultimately the data is stored in the database. The mobile application accesses the location information from the database for particular animal and plots it onto the Map. This paper comprises of system architecture, proposed algorithm and mathematical model.

On the accuracy of cellular mobile station location estimation

This paper analyzes the accuracy of the multilateration techniques of possible application in mobile communications networks. A general mathematical framework including all the multilateration techniques that process absolute and/or relative distance measurements between the mobile station and multiple base transceiver stations is introduced. Based on this scheme, a general measure of positioning accuracy is first derived and then analyzed in the special cases defined by three techniques of possible implementation in GSM-based systems. A geometrical interpretation of the formulas that define the location accuracy and a comparison between the techniques from the geometric conditioning point of view are also given.

UMTS: The fusion of fixed and mobile networking

The Universal Mobile Telecommunications System (UMTS) represents the emerging European standard for next generation cellular systems that transmit data as well as voice on a global basis. The UMTS goals involve the integration of evolved versions of today's second generation digital cellular systems, together with new terrestrial and satellite components. They also address a fusion of the mobile and fixed networks with a much greater role for intelligent network services. The integration scenarios take little account of the proliferation of IP based networks, and some system redesign is necessary to correct for this. To build on the strengths of GSM, the core UMTS network will evolve from the existing GSM service. UMTS support for data will probably be based on GPRS developed for GSM. Speeds available will vary from approximately 100 Kbps for a pre UMTS, GSM based system up to 2 Mbps for new UMTS radio access networks. Future mobile broadband systems may extend this up to 155 Mbps in restricted environments. The ETSI timetable for introducing these new systems shows the first equipment going into service in 2002, with full availability of third generation UMTS services by 2005.

UMTS: the fusion of fixed and mobile networking

The Universal Mobile Telecommunications System (UMTS) represents the emerging European standard for next generation cellular systems that transmit data as well as voice on a global basis. The UMTS goals involve the integration of evolved versions of today's second generation digital cellular systems, together with new terrestrial and satellite components. They also address a fusion of the mobile and fixed networks with a much greater role for intelligent network services. The integration scenarios take little account of the proliferation of IP based networks, and some system redesign is necessary to correct for this. To build on the strengths of GSM, the core UMTS network will evolve from the existing GSM service. UMTS support for data will probably be based on GPRS developed for GSM. Speeds available will vary from approximately 100 Kbps for a pre UMTS, GSM based system up to 2 Mbps for new UMTS radio access networks. Future mobile broadband systems may extend this up to 155 Mbps in restricted environments. The ETSI timetable for introducing these new systems shows the first equipment going into service in 2002, with full availability of third generation UMTS services by 2005.