460 research outputs found
RFID Technology in Real Time Attendance Register System
RFID stands for Radio Frequency Identification which provides the ability to identify, locate and sense the conditions of animate and inanimate entities. Radio frequency identification or RFID is a generic term for technologies that are used for auto identification of people or object using radio waves. In this technology a unique serial number is stored to identify a person or an object and other related information, on a microchip of silicon that is attached to an antenna which in turn is attached to a RFID reader. The antenna enables the chip to transmit the identification information to a reader then the reader converts the radio waves reflected back from the RFID tag into digital information that can then passed on to computers running RFID application middleware, that can make use of it. The system stores the absent and present student’s attendance details in electronic format so that management of attendance becomes easy. Radio-Frequency Identification (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. RFID technology which is a matured technology that has been widely deployed by various organizations as part of their automation systems. In this study, an RFID based system has been built in order to produce a time-attendance management system. This system consists of two main parts which include: the hardware and the software. The hardware consists of the motor unit and the RFID reader. The RFID reader, which is a low-frequency reader (125 kHz), is connected to the host computer via a serial to USB converter cable. The Time-Attendance System GUI was developed using visual basic.Net. The Time-Attendance Management System provides the functionalities of the overall system such as displaying live ID tags transactions, registering ID, deleting ID, recording attendance and other minor functions. This interface was installed in the host computer. Keywords: Systems, RFID, Technology, Attendance, Register, DOI: 10.7176/CEIS/12-2-06 Publication date: September 30th 202
NASA Tech Briefs Index, 1977, volume 2, numbers 1-4
Announcements of new technology derived from the research and development activities of NASA are presented. Abstracts, and indexes for subject, personal author, originating center, and Tech Brief number are presented for 1977
Research and design of an embedded controller and GUI for the automation of the armature Volt-Drop test.
M. Sc. Eng. University of KwaZulu-Natal, Durban 2009.In a rapidly evolving technological and industrialised society, automation is a current
and growing trend. The concept is typically applied to uneconomical processes and
extends from the automation of highly complex processes to those that are less
complex. This dissertation discusses the automation of a previously mundane, manual,
time-consuming and inefficient task using an embedded controller with dual enhanced
microcontrollers as its core. Spoornet recognised the need to automate this and other
processes hence a drive was initiated by Spoornet’s Engineering and Technology
department into the study of automation principles and techniques that can be used as
a basis for the automation of workshops and test centers. This research stems from the
above mentioned drive.
The Volt-Drop Test was the process that was used as a model to investigate the
considerations, boundaries, design concepts and the hardware and software
development that is inherent in the automation of a process. The design of the
controller that facilitates the automation of the Volt-Drop Test was completed after
research into embedded systems, embedded microcontrollers, programming languages
and techniques, digital electronics, analogue electronics, digital system design
concepts and techniques, analogue system design concepts and techniques, and the
latest available electronic components.
A Graphic User Interface (GUI) was developed to interface with the controller to set
up test parameters, display the present test status, perform calculations on the data
received from the controller and display faults in the armature under test. Further, the
GUI has the functionality to save all test data in a predefined and secure location to be
retrieved and viewed as historical data or used for trending. A Remote Graphic User
Interface (RGUI) was also developed. This interface is used solely to view test data
(retrieved from the saved history files), from any geographic location provided that
the user has been granted access to the secure location in which this data is saved.
In the testing phase, all tests were carried out using high quality, high accuracy and
recently calibrated instrumentation. The test results obtained largely reflected what
was expected from the system when compared to simulations that were carried out on
the controller and the GUI during their development. With regard to the automation
process, the system follows the procedure as it was designed with respect to correct
switching sequences, response to system errors, timing of events and correct and
efficient communication between the controller and the GUI. In terms of the data
acquisition aspects the system captures, converts, calculates, analyses and logs data,
within the expected input range with a level of accuracy that is considered to be high
(a maximum percentage error of 0.75% - expressed as a percentage of the injected test
supply) for this type of application when compared to the accuracy of present test
methods
Development of an image converter of radical design
A long term investigation of thin film sensors, monolithic photo-field effect transistors, and epitaxially diffused phototransistors and photodiodes to meet requirements to produce acceptable all solid state, electronically scanned imaging system, led to the production of an advanced engineering model camera which employs a 200,000 element phototransistor array (organized in a matrix of 400 rows by 500 columns) to secure resolution comparable to commercial television. The full investigation is described for the period July 1962 through July 1972, and covers the following broad topics in detail: (1) sensor monoliths; (2) fabrication technology; (3) functional theory; (4) system methodology; and (5) deployment profile. A summary of the work and conclusions are given, along with extensive schematic diagrams of the final solid state imaging system product
Development of a space qualified high reliability rotary actuator. Volume 1: Technical report
A space-qualified, high reliability, 150 ft-lb rated torque rotary acutator based on the Bendix Dynavector drive concept was developed. This drive is an integrated variable reluctance orbit motor-epicyclic transmission actuator. The performance goals were based on future control moment gyro torquer applications and represent a significant advancement in the torque-to-weight ratio, backlash, inertia and response characteristics of electric rotary drives. The program accomplishments have been in two areas: (1) the development of two high ratio (818:1) actuator configurations (breadboard and flightweight), and (2) the invention of a reliable proximity switch sensor system for self-commutation without use of optical or electrical brush techniques
An all monolithic MOS A/D converter - Low power clocks, multiplexers, registers, and A/D converter Final report
Research and developments of monolithic, MOS, ten bit, analog to digital converte
Voyager capsule, preliminary design, phase B. Volume IV - Entry science package. Section II - Preliminary design for OSE FINAL report
Operational support equipment preliminary design for entry science package portion of Voyager flight capsule syste
Displays, memories, and signal processing: A compilation
Articles on electronics systems and techniques were presented. The first section is on displays and other electro-optical systems; the second section is devoted to signal processing. The third section presented several new memory devices for digital equipment, including articles on holographic memories. The latest patent information available is also given
Cumulative index to NASA Tech Briefs, 1963-1965
Annotated bibliography of NASA technical briefs on electrical, energy sources, materials, life sciences, and mechanical informatio
Англійська мова для студентів електромеханічних спеціальностей
Навчальний посібник розрахований на студентів напряму підготовки
6.050702 Електромеханіка. Містить уроки, що структуровані за тематичними
розділами, граматичний коментар, короткі англо-український і українсько-
англійський словники та додатки, які спрямовані на закріплення загальних
навичок володіння англійською мовою. Акцентований на ɨсобливості
термінології, що застосовується у науково-технічній галузі, зокрема, в
електромеханіці та виконання запропонованих завдань, що буде сприяти
формуванню навичок перекладу з англійської та української мов, сприйняттю
письмової та усної англійської мови, вмінню письмового викладення
англійською мовою науково-технічних та інших текстів під час професійної
діяльності, спілкуванню з професійних та загальних питань тощо
- …