A Beacon based Localization System for Autonomous Mobile Robots and its Applications in Traffic and Transport Control

ACCURATE sensing of vehicle position and attitude is still a very challenging problem in many mobile robot applications. The mobile robot vehicle applications must have some means of estimating where they are and in which direction they are heading. Many existing indoor positioning systems are limited in workspace and robustness because they require clear lines-of-sight or do not provide absolute, driftfree measurements.The research work presented in this dissertation provides a new approach to position and attitude sensing system designed specifically to meet the challenges of operation in a realistic, cluttered indoor environment, such as that of an office building, hospital, industrial or warehouse. This is accomplished by an innovative assembly of infrared LED source that restricts the spreading of the light intensity distribution confined to a sheet of light and is encoded with localization and traffic information. This Digital Infrared Sheet of Light Beacon (DISLiB) developed for mobile robot is a high resolution absolute localization system which is simple, fast, accurate and robust, without much of computational burden or significant processing. Most of the available beacon's performance in corridors and narrow passages are not satisfactory, whereas the performance of DISLiB is very encouraging in such situations. This research overcomes most of the inherent limitations of existing systems.The work further examines the odometric localization errors caused by over count readings of an optical encoder based odometric system in a mobile robot due to wheel-slippage and terrain irregularities. A simple and efficient method is investigated and realized using an FPGA for reducing the errors. The detection and correction is based on redundant encoder measurements. The method suggested relies on the fact that the wheel slippage or terrain irregularities cause more count readings from the encoder than what corresponds to the actual distance travelled by the vehicle.The application of encoded Digital Infrared Sheet of Light Beacon (DISLiB) system can be extended to intelligent control of the public transportation system. The system is capable of receiving traffic status input through a GSM (Global System Mobile) modem. The vehicles have infrared receivers and processors capable of decoding the information, and generating the audio and video messages to assist the driver. The thesis further examines the usefulness of the technique to assist the movement of differently-able (blind) persons in indoor or outdoor premises of his residence.The work addressed in this thesis suggests a new way forward in the development of autonomous robotics and guidance systems. However, this work can be easily extended to many other challenging domains, as well.

Decimation Filter Design Toolbox for Multi-Standard Wireless Transceivers using MATLAB.

The demand for new telecommunication services requiring higher capacities, data rates and different operating modes have motivated the development of new generation multi-standard wireless transceivers. A multi-standard design often involves extensive system level analysis and architectural partitioning, typically requiring extensive calculations. In this research, a decimation filter design tool for wireless communication standards consisting of GSM, WCDMA, WLANa, WLANb, WLANg and WiMAX is developed in MATLAB® using GUIDE environment for visual analysis. The user can select a required wireless communication standard, and obtain the corresponding multistage decimation filter implementation using this toolbox. The toolbox helps the user or design engineer to perform a quick design and analysis of decimation filter for multiple standards without doing extensive calculation of the underlying methods.

Current Trends in Wireless Networking

Current Trends in Wireless Networking. DigitalLibrary@CUSAT. ...

Design of a Compact Multiband Microstrip Antenna

A compact microstrip multiband antenna on a modified ground plane which can operate over the bands starting from 900 MHz to 5.35 GHz which includes the GSM (880-960) GPS (1568-1592 MHz), DCS (1710-1880 MHz), and PCS (1850- 1990 MHz). UMTS (1920-2170 MHz), IEEE 802.11 b/g (2400- 2484) and WLAN IEEE 802.11a band (5.15-5.35) is reported in this paper. The overall dimension of the antenna is 33 x 33 mm2 including the top patch with a dimension 22 x 22 mm2. The experimental results of the antenna are presented in this paper. The results confirm that the antenna exhibits wide band characteristics and covers 7 bands of operation

A Novel Planar Fractal Antenna with CPW-Feed for Multiband Applications

In this paper, a multiband antenna using a novel fractal design is presented. The antenna structure is formed by inscribing a hexagonal slot within a circle. This base structure is then scaled and arranged within the hexagon along its sides without touching the outer structure. The proposed CPW fed, low profile antenna offers good performance in the 1.65 – 2.59 GHz, 4.16 – 4.52 GHz and 5.54 – 6.42 GHz bands and is suitable for GSM 1800/1900, Bluetooth, IMT advanced systems and upper WLAN applications. The antenna has been fabricated on a substrate of height 1.6 mm and εr = 4.4 and simulation and experimental results are found to be in good agreement

A Planar Compact Metamaterialinspired Broadband Antenna

An electrically small, broadband-modified, truncated ground metamaterial EZ antenna is presented. This, a modified EZ antenna system, achieves a larger bandwidth of the order of 650 MHz by adjusting the metamaterial-inspired meandered ground element fed by a top loaded monopole. The design is devoid of the large ground planes and the external parasitic elements used in conventional designs for achieving proper impedance matching characteristics. The antenna requires a small foot print of kg/5 3 kg/10, where kg is the guided wavelength corresponding to the lowest frequency of operation, when printed on a substrate of dielectric constant 4.4 and thickness 1.6 mm. The antenna offers a 2:1 VSWR bandwidth from 750 MHz to 1.4 GHz, which covers CDMA, GSM, and ISM bands

Compact CPW-fed uniplanar antenna for multiband wireless applications

A compact coplanar waveguide (CPW) fed uniplanar antenna for Quad-band applications is presented. The Quad-band operation is realized by imposing various current paths in a modified T-shaped radiating element. The antenna covers GSM 900, DCS 1800, IEEE802.11.a, IEEE802.11.b and HiperLAN-2 bands and exhibits good radiation characteristics. This low profile antenna has a dimension of 32mm×31mmwhen printed on a substrate of dielectric constant 4.4 and height 1.6mm. Details of design with experimental and simulated results are presented

CPW-Fed Quad-Band Antenna for Compact Wireless Application

This paper presents the design and development of a compact CPW fed quad band antenna. This low profile antenna has a dimension of 32mmx31mm when printed on a substrate of dielectric constant 4.4 and height 1.6mm. The antenna covers GSM 900, DCS 1800, IEEE802.11.a, IEEE802.11.b and HiperLAN2 bands. The antenna exhibits good radiation characteristics with moderate gain

A Triple-mode Sigma-delta Modulator Design for Wireless Standards

This work presents a triple-mode sigma-delta modulator for three wireless standards namely GSM/WCDMA and Bluetooth. A reconfigurable ADC has been used to meet the wide bandwidth and high dynamic range requirements of the multi-standard receivers with less power consumption. A highly linear sigma-delta ADC which has reduced sensitivity to circuit imperfections has been chosen in our design. This is particularly suitable for wide band applications where the oversampling ratio is low. Simulation results indicate that the modulator achieves a peak SNDR of 84/68/68 dB over a bandwidth of 0.2/3.84/1.5 MHz with an oversampling ratio 128/8/8 in GSM/WCDMA/Bluetooth modes respectively

El estudio del sector profesional en los distintos ciclos formativos en IES Polígono Sur

Materiales para el aula relativos al módulo profesional 'Estudio del sector' de los diferentes ciclos formativos del centro.

La enseñanza desde la realidad del mundo productivo.

Aborda la adaptación de las capacidades terminales de los ciclos de Actividades Agrarias que tiene implantado el centro, al marco real de producción mediante la explotación de una finca, que gracias al esfuerzo del propio departamento, del centro docente y del Ayuntamiento ha cedido la Diputación de Córdoba al Departamento de Actividades Agrarias. Se plantea dentro de este proyecto la adaptación de las actividades de enseñanza-aprendizaje que se deben realizar en cada módulo profesional con la realización de todas las actividades que profesionalmente deben abordarse para la explotación de la finca. El proyecto se divide en cuatro fases muy bien definidas: 1.- Documentación: Recogida de toda la información de partida para llevar a cabo la explotación de la finca. 2.- Planificación de las actividades: Programación de las acciones a llevar a cabo con cada tipo de alumno en cada módulo profesional y establecimiento de un calendario acorde con el desarrollo curricular del ciclo. 3.- Ejecución: Realización de las actividades y valoración del grado de consecución de las capacidades terminales del ciclo. 4.- Valoración y revisión: Realización del modelo óptimo de explotación de la finca. Elaboración de material resultante del proyecto para su uso posterior en el aula.

Constructivismo y enseñanza de las ciencias : planificación, desarrollo y evaluación de propuestas para la Educación Secundaria.

Manual sobre el modelo constructivista aplicado al aprendizaje de las ciencias y en el que se aborda el tema central de las percepciones o conocimientos previos de los alumnos, además de profundizar en la evolución del aprendizaje cuando se utilizan en el aula propuestas de enseñanza que favorecen el reconocimiento de las ideas propias. El manual recoge propuestas específicas de didáctica de las ciencias experimentales: los módulos de aprendizaje de la nutrición humana, de alimentación, salud y consumo, herencia biológica y evolución y ondas, sonido y luz.

Las nuevas tecnologías de la comunicación y la Educación de Adultos.

El autor propone el estudio de las nuevas tecnologías de la comunicación como medio y como fin educativo que ofrece nuevas posibilidades de innovación educativa a la ESPA dadas las características del alumno adulto, los cambios culturales, económicos y laborales de la sociedad e incluso la propia evolución de la educación de adultos que lleva a un replanteamiento de los contenidos y métodos educativos empleados. Aunque la introducción de las nuevas tecnologías se puede realizar en cualquier módulo de ESPA es conveniente plantearlo en un módulo optativo.

Diseño de medios didácticos.

Módulo formativo para la especialidad de técnico de formación, elaborado y editado por la Asociación de Empresas de Economía Social de la Región de Murcia para mejorar los procesos formativos llevados a cabo por la asociación para sus socios.

Acción formativa, conocimientos y habilidades en materia medioambiental.

El código de identificación del curso es 885.- Otros manuales con el mismo título y formato se ocupan de otros módulos de este mismo curso sin proyección educativa