Proceedings of the 4th field robot event 2006, Stuttgart/Hohenheim, Germany, 23-24th June 2006

Zeer uitgebreid verslag van het 4e Fieldrobotevent, dat gehouden werd op 23 en 24 juni 2006 in Stuttgart/Hohenhei

Sistema de detección de intrusión para dispositivos empotrados de bajo consumo

The popularization of smartphones, tablets and personal computers is steering the digital transformation towards the necessities of end users, aiming to provide ease in their everyday tasks. As technology moves forward, the possibility to offer users total management of their home using a single device is becoming more popular. More devices are entering the market every day, such as lights, motors, intruder detection systems, etc. Nowadays, the deployment of affordable devices has become a necessity, given the current economic state. With the assist of microcontrollers, and all the new components that are being introduced regularly in the market, it has become possible for users to develop their own systems for their home, and as such, decide upon the different technologies they require based on their needs. This Bachelor Thesis details the process of obtaining an affordable approach to an intruder detection system. The system will be deployed in a Raspberry Pi, one of the most commonly used microcomputers in the world; and will use an Arduino UNO connected to a PIR sensor for the motion detection. With the help of the Telegram service, we will deploy a Telegram bot that will provide a message service to the user with a friendly and easy to use interface. This application will provide the end user similar functionalities as those systems that are already in the market.La popularización de los Smartphones, tablets y ordenadores personales está dirigiendo la transformación digital hacia las necesidades del usuario final, tratando de proporcionar a los usuarios facilidad en la realización de sus tareas cotidianas. A medida que la tecnología avanza, la posibilidad de ofrecer a los usuarios la opción de controlar completamente de su hogar a través de un único dispositivo se hace cada vez más popular. Cada día aparecen más dispositivos en el mercado, desde luces, motores de movimiento y sistemas de detección de intrusos. Hoy en día, la instalación de dispositivos asequibles se ha convertido en una necesidad, dado el estado económico actual. Con la ayuda de los microcontroladores y todos los nuevos componentes que se introducen regularmente en el mercado, los usuarios pueden desarrollar sus propios sistemas para su hogar y, como tal, decidir sobre las diferentes tecnologías que emplear de acuerdo a sus distintas necesidades. Este Trabajo de Fin de Grado detalla el proceso para obtener una alternativa económica a los sistemas de detección de intrusos. El sistema se implementará en una Raspberry Pi, una de las microcomputadoras más utilizadas en el mundo; y utilizará un Arduino UNO conectado a un PIR para capturar la detección de movimiento. Con la ayuda de la API de Telegram, se implementará un Telegram bot que proporcionará al usuario una interfaz amigable y fácil de usar. Esta aplicación proporcionará al usuario final funcionalidades casi idénticas a los sistemas que ya existen en el mercado.Ingeniería Informátic

Completely Automated Public Physical test to tell Computers and Humans Apart: A usability study on mobile devices

A very common approach adopted to fight the increasing sophistication and dangerousness of malware and hacking is to introduce more complex authentication mechanisms. This approach, however, introduces additional cognitive burdens for users and lowers the whole authentication mechanism acceptability to the point of making it unusable. On the contrary, what is really needed to fight the onslaught of automated attacks to users data and privacy is to first tell human and computers apart and then distinguish among humans to guarantee correct authentication. Such an approach is capable of completely thwarting any automated attempt to achieve unwarranted access while it allows keeping simple the mechanism dedicated to recognizing the legitimate user. This kind of approach is behind the concept of Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA), yet CAPTCHA leverages cognitive capabilities, thus the increasing sophistication of computers calls for more and more difficult cognitive tasks that make them either very long to solve or very prone to false negatives. We argue that this problem can be overcome by substituting the cognitive component of CAPTCHA with a different property that programs cannot mimic: the physical nature. In past work we have introduced the Completely Automated Public Physical test to tell Computer and Humans Apart (CAPPCHA) as a way to enhance the PIN authentication method for mobile devices and we have provided a proof of concept implementation. Similarly to CAPTCHA, this mechanism can also be used to prevent automated programs from abusing online services. However, to evaluate the real efficacy of the proposed scheme, an extended empirical assessment of CAPPCHA is required as well as a comparison of CAPPCHA performance with the existing state of the art. To this aim, in this paper we carry out an extensive experimental study on both the performance and the usability of CAPPCHA involving a high number of physical users, and we provide comparisons of CAPPCHA with existing flavors of CAPTCHA

Mobile robot electronic system with a network and microcontroller based interface

Integrated Masters at Electronics and Computers EngineeringNowadays mobile robots are expected to be a desire at several services to afford man facilities and increase safety in any kind of duties. Mobility is a key issue in robotics and a challenging subject for any research and development. It combines cognitive capabilities focused on sensorial input and human interaction with intelligent control of the drive systems and requires real mechatronics engineering solutions to enable robust and reliable operation. In the European Centre for Mechatronics [W1] mobile robots have been research subjects for years. A mobile platform with semi-autonomous functionality has been developed years ago. It has been used as a demonstration and test platform to study mobility and cognitive control. In the University of Minho [W3] and RWTH University [W2] that kind of research is also important and the industry support gives a solid development sign to the institutions. As the control system capacity on board of the vehicle has reached limits, a new system architecture with more powerful controller elements was planned to replace the old one. In this context the key objective of the project was to design and develop a new embedded system capable of controlling the mobile platform drives using ATMega microcontroller technology

A ROS-Based Open Tool for Controlling an Educational Mobile Robot

Commercial educational robots provide an accessible entry point into the world of robotics. However, their programming is often limited to specific platforms, which can make it challenging to acquire the skills necessary for industry and research. In this study, we introduce an open-access tool developed using C++ and Arduino IDE that enables us to manage a commercial mobile robot through the Robot Operating System (ROS) middleware. This provides programmers with the ability to work in a powerful programming environment, such as Python. The robot used is the CrowBot BOLT, a kit based on ESP32 that enables wireless communication and includes various peripherals for application development. The mobile robot topics include robot velocities, RGB LEDs, a buzzer, a programmable button, and proximity, light, and line sensors. The proposal is assessed using two controllers: one for proximity and the other for tracking angular light. Both controllers are developed using Visual Studio Code. The experimental results demonstrated the proper functioning of the tool. Additionally, the response time was evaluated, and it was found that optimal performance is achieved at a frequency of 10 Hz. In summary, this proposal provides an accessible option for students and developers seeking to gain skills in robotics using ROS. The project’s repository is located at https://github.com/joseVarelaAldas/ROS-Crowbot

Self-Balancing Robot

The aim of this project is to build a self-balancing robot. The robot built is consist of three round platforms with two wheels attached at the bottom of each side equipped with successfully self-balancing mechanism

Mobile Robotics

The book is a collection of ten scholarly articles and reports of experiences and perceptions concerning pedagogical practices with mobile robotics.“This work is funded by CIEd – Research Centre on Education, project UID/CED/01661/2019, Institute of Education, University of Minho, through national funds of FCT/MCTES-PT.

Reducing Communication Delay Variability for a Group of Robots

A novel architecture is presented for reducing communication delay variability for a group of robots. This architecture relies on using three components: a microprocessor architecture that allows deterministic real-time tasks; an event-based communication protocol in which nodes transmit in a TDMA fashion, without the need of global clock synchronization techniques; and a novel communication scheme that enables deterministic communications by allowing senders to transmit without regard for the state of the medium or coordination with other senders, and receivers can tease apart messages sent simultaneously with a high probability of success. This approach compared to others, allows simultaneous communications without regard for the state of the transmission medium, it allows deterministic communications, and it enables ordered communications that can be a applied in a team of robots. Simulations and experimental results are also included