12 research outputs found

    PHALANX: Expendable Projectile Sensor Networks for Planetary Exploration

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    Technologies enabling long-term, wide-ranging measurement in hard-to-reach areas are a critical need for planetary science inquiry. Phenomena of interest include flows or variations in volatiles, gas composition or concentration, particulate density, or even simply temperature. Improved measurement of these processes enables understanding of exotic geologies and distributions or correlating indicators of trapped water or biological activity. However, such data is often needed in unsafe areas such as caves, lava tubes, or steep ravines not easily reached by current spacecraft and planetary robots. To address this capability gap, we have developed miniaturized, expendable sensors which can be ballistically lobbed from a robotic rover or static lander - or even dropped during a flyover. These projectiles can perform sensing during flight and after anchoring to terrain features. By augmenting exploration systems with these sensors, we can extend situational awareness, perform long-duration monitoring, and reduce utilization of primary mobility resources, all of which are crucial in surface missions. We call the integrated payload that includes a cold gas launcher, smart projectiles, planning software, network discovery, and science sensing: PHALANX. In this paper, we introduce the mission architecture for PHALANX and describe an exploration concept that pairs projectile sensors with a rover mothership. Science use cases explored include reconnaissance using ballistic cameras, volatiles detection, and building timelapse maps of temperature and illumination conditions. Strategies to autonomously coordinate constellations of deployed sensors to self-discover and localize with peer ranging (i.e. a local GPS) are summarized, thus providing communications infrastructure beyond-line-of-sight (BLOS) of the rover. Capabilities were demonstrated through both simulation and physical testing with a terrestrial prototype. The approach to developing a terrestrial prototype is discussed, including design of the launching mechanism, projectile optimization, micro-electronics fabrication, and sensor selection. Results from early testing and characterization of commercial-off-the-shelf (COTS) components are reported. Nodes were subjected to successful burn-in tests over 48 hours at full logging duty cycle. Integrated field tests were conducted in the Roverscape, a half-acre planetary analog environment at NASA Ames, where we tested up to 10 sensor nodes simultaneously coordinating with an exploration rover. Ranging accuracy has been demonstrated to be within +/-10cm over 20m using commodity radios when compared to high-resolution laser scanner ground truthing. Evolution of the design, including progressive miniaturization of the electronics and iterated modifications of the enclosure housing for streamlining and optimized radio performance are described. Finally, lessons learned to date, gaps toward eventual flight mission implementation, and continuing future development plans are discussed

    Design of a man-wearable control station for a robotic rescue system

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    This report details the design, development, and testing of a man-wearable operator control station for the use of a low-cost robotic system in Urban Search and Rescue (USAR). The complete system, dubbed the "Scarab", is the 1st generation developed and built in the Robotics and Agents Research Laboratory (RARL) at the University of Cape Town (UCT), and was a joint effort between three MSc students. Robots have found a place in USAR as replaceable units which can be deployed into dangerous and confined voids in the place of humans. As such, they have been utilized in a large variety of disaster environments including ground, aerial, and underwater scenarios, and have been gathering research momentum since their first documented deployment in the rescue operations surrounding the 9/11 terrorist attacks. However one issue is their cost as they are not economical solutions, making them less viable for inclusion into a rescue mission as well as negatively affecting the operator‟s decisions in order to prioritise the safety of the unit. Another concern is their difficulty of transport, which becomes dependent on the size and portability of the robot. As such, the Scarab system was conceived to provide a deployable robotic platform which was lowcost, with a budget goal of US $ 500. To address the transportability concerns, it aimed to be portable and light-weight; being able to be thrown through a window by a single hand and withstanding a drop height of 3 m. It includes an internal sensor payload which incorporates an array of sensors and electronics, including temperature monitors and two cameras to provide both a normal and IR video feed. Two LED spotlights are used for navigation, and a microphone and buzzer is included for interaction with any discovered survivors. The operator station acts as the user interface between the operator and the robotic platform. It aimed to be as intuitive as possible, providing quick deployment and minimalizing the training time required for its operation. To further enhance the Scarab system‟s portability, it was designed to be a manwearable system, allowing the operator to carry the robotic platform on their back. It also acts as a charging station, supplying power to the robotic platform‟s on-board charging circuitry. The control station‟s mechanical chassis serves as the man-wearable component of the system, with the functionality being achieved by integration onto a tactical vest. This allows the operator to take the complete system on and off as a single unit without assistance, and uses two mounting brackets to dock the robotic platform. Key areas focussed upon during design were the weight and accessibility of the system, as well as providing a rugged housing for the internal electronics. All parts were manufactured in the UCT Mechanical Engineering workshop

    The New Way of War: Is There A Duty to Use Drones?

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    Part I of this Article briefly describes the newest battlespace occupants. Robotic systems have been taking active part in combat. They now inhabit the air, the land, and the sea. They carry out missions ranging from surveillance and bomb disposal to “destroy and disable.” Part II examines the relevant principles of LOAC. It argues that drones are not, per se, unlawful under LOAC. Rather, the critical question is the same for drones as for other types of weapons, i.e., whether the specific use of the weapon complies with LOAC. In this context, the weapon must be deployed in accordance with LOAC’s fundamental principles of humanity, proportionality, distinction, taking precautions, and military necessity. Even if a specific type of weapon is not unlawful per se (or has not been specifically prohibited by particular treaties), it may not be used improperly, e.g., in a manner that would run afoul of these principles. Part III applies the principles of LOAC to drones. First, it analyzes the general trajectories of the development of new weapons throughout human history, which has involved trading off between three main considerations, namely distance, accuracy, and lethality. Second, it examines the rise of precision-guided munitions as an attempt to balance these three considerations, increasing military efficiency while minimizing harm to civilians and civilian objects. Part IV discusses the ability of drones to combine both remote exercise of force and high accuracy to reduce lethality. Part IV also closely examines both the promised benefits that the use of drones may bring to battlespace and the challenges to their deployment. Part V returns to the question of whether states and their military commanders have an obligation to use drones in the context of an armed conflict. It argues that although there are no treaties that deal specifically with the use of drones in armed conflict and no customary norms obligating the use of drones, such a duty may be derived from the cardinal principles of the law of armed conflict. It suggests that such an interpretation is merited if we accept that drones offer the possibility of a more humane war by combining remote and accurate use of force to reduce lethality among both friendly forces and innocent civilians. Part V concludes by setting out further challenges that ought to receive careful attention in developing and elaborating on the obligation to use drones in the battlefield

    Concept evaluation of Mars drilling and sampling instrument

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    The search for possible extinct or existing life is the goal of the exobiology investigations to be undertaken during future Mars missions. As it has been learnt from the NASA Viking, Pathfinder and Mars Exploration Rover mission, sampling of surface soil and rocks can gain only limited scientific information. In fact, possible organic signatures tend to be erased by surface processes (weathering, oxidation and exposure to UV radiation from the Sun). The challenge of the missions have mostly been getting there; only roughly one third of all Mars missions have reached their goal, either an orbit around the planet, or landing to the surface. The two Viking landers in the 1970's were the first to touch down the soil of Mars in working order and performing scientific studies there. After that there was a long gap, until 1997 the Pathfinder landed safely on the surface and released a little rover, the Sojourner. In 2004 other rovers came: the Mars Exploration Rover Spirit and a while after that, the sister rover Opportunity. These five successful landings are less than half of all attempts to land on Mars. Russia, Europe and the United States have all had their landers, but Mars is challenging. Even Mars orbit has been tough to reach by many nation's orbiters. It is then understandable that of these five successful landings, performed by National Aeronautics and Space Administration (NASA), there have not yet been very complicated mechanical deep-drilling instruments onboard. The risks to get there are great, and the risk of malfunctioning of a complicated instrument there is also high. Another reason to avoid a deep-driller from the lander payload is simply the mass constrains. A drill is a heavy piece of payload, and the mass allocations for scientific instruments are small. In the launch window of 2009, both European Space Agency (ESA) and NASA have their plans to send a rover to Mars. Both of them will include some means to analyse the subsurface material. ESA's rover, called the ExoMars rover, will carry a deep-driller onboard in its Pasteur payload. At the time of writing this thesis, an exact definition of the Pasteur drill has not yet been defined. The author of this thesis has studied the driller instruments in his past work projects and in his doctoral studies. The main focus of this thesis is to analyse the feasibility of different drill configurations to fit to the requirements of the ExoMars' Pasteur payload drill by using the information gathered from the past projects. In this thesis, the author introduces a new concept of a robotic driller, called the MASA drill. The MASA drill fulfils the needs for the drill instrument onboard the Pasteur payload. The main study in this thesis concentrates on design work of the MASA drill, as well as analysis of its operation and performance capabilities in the difficult task of drilling and sampling.reviewe

    Adaptive Locomotion: The Cylindabot Robot

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    Adaptive locomotion is an emerging field of robotics due to the complex interaction between the robot and its environment. Hybrid locomotion is where a robot has more than one mode of locomotion and potentially delivers the benefits of both, however, these advantages are often not quantified or applied to new scenarios. The classic approach is to design robots with a high number of degrees of freedom and a complex control system, whereas an intelligent morphology can simplify the problem and maintain capabilities. Cylindabot is designed to be a minimally actuated hybrid robot with strong terrain crossing capabilities. By limiting the number of motors, this reduces the robot's weight and means less reinforcement is needed for the physical frame or drive system. Cylindabot uses different drive directions to transform between using wheels or legs. Cylindabot is able to climb a slope of 32 degrees and a step ratio of 1.43 while only being driven by two motors. A physical prototype and simulation models show that adaptation is optimal for a range of terrain (slopes, steps, ridges and gaps). Cylindabot successfully adapts to a map environment where there are several routes to the target location. These results show that a hybrid robot can increase its terrain capabilities when changing how it moves and that this adaptation can be applied to wider environments. This is an important step to have hybrid robots being deployed to real situations

    Climbing and Walking Robots

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    With the advancement of technology, new exciting approaches enable us to render mobile robotic systems more versatile, robust and cost-efficient. Some researchers combine climbing and walking techniques with a modular approach, a reconfigurable approach, or a swarm approach to realize novel prototypes as flexible mobile robotic platforms featuring all necessary locomotion capabilities. The purpose of this book is to provide an overview of the latest wide-range achievements in climbing and walking robotic technology to researchers, scientists, and engineers throughout the world. Different aspects including control simulation, locomotion realization, methodology, and system integration are presented from the scientific and from the technical point of view. This book consists of two main parts, one dealing with walking robots, the second with climbing robots. The content is also grouped by theoretical research and applicative realization. Every chapter offers a considerable amount of interesting and useful information

    Збірник тез доповідей учасників XXIIІ Міжнародної студентської науково-практичної конференції іноземними мовами, присвяченої 30-річчю кафедри іноземних мов

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    Інноваційні технології на службі правопорядку (зарубіжний досвід) : зб. тез доп. учасників ХХIІІ Міжнар. студент. наук.-практ. конф. інозем. мовами, присвяч. 30-річчю каф. інозем. мов (м. Харків, Україна, 12 квіт. 2021 р.) / МВС України, Харків. нац. ун-т внут. справ, Каф. інозем. мов ф-ту № 4, Наук. парк «Наука та безпека». – Харків : ХНУВС, 2022. – 248 с.Збірник містить аналітичний огляд та узагальнення зарубіжного досвіду використання інноваційних технологій правоохоронними органами. Інформаційною основою проведених досліджень є автентичні джерела англійською, німецькою та французською мовами. Матеріали конференції сприятимуть удосконаленню та підвищенню ефективності діяльності вітчизняних працівників поліції.A selection of analytical reviews of the foreign information about the development of innovative technologies by law enforcement agencies. The informational basis for conducting research is authentic English, German and French languages. The materials of the conference will be accepted to improve and improve the efficiency of the work of the clergy in the police.Сборник содержит аналитический обзор и обобщение зарубежного опыта использования инновационных технологий правоохранительными органами. Информационной основой проведенных исследований являются аутентичные источники на английском, немецком и французском языках. Материалы конференции будут способствовать усовершенствованию и повышению эффективности деятельности отечественных работников полиции

    A compatibilist computational theory of mind

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    This thesis defends the idea that the mind is essentially computational, a position that has in recent decades come under attack by theories that focus on bodily action and that view the mind as a product of interaction with the world and not as a set of secluded processes in the brain. The most prominent of these is the contemporary criticism coming from enactivism, a theory that argues that cognition is born not from internal processes but from dynamic interactions between brain, body and world. The radical version of enactivism in particular seeks to reject the idea of representational content, a key part in the computational theory of mind. To this end I propose a Compatibilist Computational Theory of Mind. This compatibilist theory incorporates embodied and embedded elements of cognition and also supports a predictive theory of perception, while maintaining the core beliefs pertaining to brain-centric computationalism: That our cognition takes place in our brain, not in bonds between brain and world, and that cognition involves manipulation of mental representational content. While maintaining the position that a computational theory of mind is the best model we have for understanding how the mind works, this thesis also reviews the various flaws and problems that the position has had since its inception. Seeking to overcome these problems, as well as showing that computationalism is still perfectly compatible with contemporary action and prediction-based research in cognitive science, the thesis argues that by revising the theory in such a way that it can incorporate these new elements of cognition we arrive at a theory that is much stronger and more versatile than contemporary non-computational alternatives

    ICSEA 2021: the sixteenth international conference on software engineering advances

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    The Sixteenth International Conference on Software Engineering Advances (ICSEA 2021), held on October 3 - 7, 2021 in Barcelona, Spain, continued a series of events covering a broad spectrum of software-related topics. The conference covered fundamentals on designing, implementing, testing, validating and maintaining various kinds of software. The tracks treated the topics from theory to practice, in terms of methodologies, design, implementation, testing, use cases, tools, and lessons learnt. The conference topics covered classical and advanced methodologies, open source, agile software, as well as software deployment and software economics and education. The conference had the following tracks: Advances in fundamentals for software development Advanced mechanisms for software development Advanced design tools for developing software Software engineering for service computing (SOA and Cloud) Advanced facilities for accessing software Software performance Software security, privacy, safeness Advances in software testing Specialized software advanced applications Web Accessibility Open source software Agile and Lean approaches in software engineering Software deployment and maintenance Software engineering techniques, metrics, and formalisms Software economics, adoption, and education Business technology Improving productivity in research on software engineering Trends and achievements Similar to the previous edition, this event continued to be very competitive in its selection process and very well perceived by the international software engineering community. As such, it is attracting excellent contributions and active participation from all over the world. We were very pleased to receive a large amount of top quality contributions. We take here the opportunity to warmly thank all the members of the ICSEA 2021 technical program committee as well as the numerous reviewers. The creation of such a broad and high quality conference program would not have been possible without their involvement. We also kindly thank all the authors that dedicated much of their time and efforts to contribute to the ICSEA 2021. We truly believe that thanks to all these efforts, the final conference program consists of top quality contributions. This event could also not have been a reality without the support of many individuals, organizations and sponsors. We also gratefully thank the members of the ICSEA 2021 organizing committee for their help in handling the logistics and for their work that is making this professional meeting a success. We hope the ICSEA 2021 was a successful international forum for the exchange of ideas and results between academia and industry and to promote further progress in software engineering research
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