Global ETD Search

1	Application Performance Evaluation for IBeacon In-Room Localization Technology Using CRLB Yang, Yang 04 May 2016 (has links) This thesis is a part of a research project performed by two MS students, Zhouchi Li and the author. The overall objective of the project is the design, implementation and performance evaluation of algorithms for newborns localization and tracking in hospitals using Apple iBeacon technology. Although we were working on the project together, I lead performance evaluation of the in-room localization system using Cramer Rao Lower Bound (CRLB). My partner, Zhouchi Li, leads modeling the path-loss of iBeacons and presence detection algorithms. This thesis describes the project with a focus on my individual contributions in CRLB analysis under different iBeacon deployment patterns as well as performance evaluation using practical characteristics of shadow fading. Today, Wi-Fi localization is the most popular indoor localization technique, which provides an accuracy of a few meters to distinguish the presences in different rooms of a building. With the recent introduction of iBeacon by Apple, possibility of more accurate in-room localization has emerged for specific applications such as locating newborns inside a hospital. The iBeacon uses Bluetooth Low Energy (BLE) technology that broadcasts beacons with unique information to the nearby receivable devices such as iPhone and android smart phones. The RSS of these beacons can be used to estimate the location and to construct an in-room localization system. In this thesis, we investigate in-room localization system using iBeacon for the newborns in hospitals with an accuracy of about 1 meter. We firstly present an in-room localization system using RSS from iBeacon. Then, based on the traditional Cramer-Rao Lower Bound (CRLB) we analyze the optimal deployment strategy for different iBeacon deployment patterns in the nursery room. Finally, we introduce a novel approach for calculation of the CRLB which includes practical conditions to analyze the influence of variable variance of shadow fading and coverage probability. In-room Performance Evaluation Localization IBeacon CRLB
2	Sensor Behavior Modeling and Algorithm Design for Intelligent Presence Detection in Nursery Rooms using iBeacon Li, Zhouchi 05 May 2016 (has links) This thesis is a part of a research project performed by two MS students Yang Yang and the author. The overall objective of the project is the design, implementation, and performance evaluation of algorithms for newborn localization and tracking in hospitals using Apple iBeacon technology. In the research project, I lead the path-loss modeling of iBeacon, design of algorithms for in-room presence detection system, and analysis of the accelerometer sensor. My partner, Yang Yang, leads the performance evaluation of the localization system using Cramer Rao Lower Bound (CRLB). This manuscript describes the project with a focus on my contributions in modeling the behavior of sensors and presence detection algorithms. Today, RFID detection is the most popular indoor detection technique. It provides high precision detection rate to distinguish the number of people in certain rooms of a building. However, special scanners and manual operations are required. This increases the cost and operation complexity. With the recent introduction of iBeacon by Apple, possibility of more efficient in-room presence detection has emerged for specific applications. An example of these applicatons is recording the number of visitors and newborns in a nursery room inside a hospital. The iBeacon uses Bluetooth Low Energy (BLE) technology for proximity broadcasting. Additionally, iBeacon carries a motion detection sensor, which can be utilized for counting the number of people and newborns entering and leaving a room. In this thesis we introduce a novel intelligent in-room presence detection system using iBeacon for the newborns in hospitals to determine the number of visitors and newborns' location in the nursery room. We first develop a software application on iPhone to receive and extract the necessary data from iBeacon for further analysis. We build the path-loss model for the iBeacon based on the received signal strength (RSS) of the iBeacon, which is used for performance evaluation using CRLB in Yang Yang's project. We also utilize the accelerometer in the smart phones to improve the performance of our detection system. in-room presence detection indoor localization CRLB iBeacon
3	Kontextbaserad information genom iBeacon : En implementation i iOS och Android / Context-based information through iBeacon : An implementation in iOS and Android Älveborn, Andreas, Lönnerstrand, Marcus January 2014 (has links) I dagsläget växer behovet av rätt information vid rätt plats, kontextbaserad information. Med hjälp av iBeacon kan man till en stor utsträckning förse det här behovet med en lösning. I uppsatsen undersöks användningsområden för iBeacon och idéer för hur man kan utveckla lösningar med hjälp av iBeacon. Ett koncept kommer att implementeras för att distribuera kontextbaserad information på mässor. Konceptet utvecklades till iOS och Android. Applikationerna tar hjälp av en webbtjänst för att underlätta distribueringen av information. Implementationerna beskrivs i detalj och viktiga designval diskuteras och motiveras. / In the present day the need for relevant information at the right time and place is growing; so called context-based information. By using iBeacon based solutions this need can be largely satisfied. This dissertation explores uses for iBeacon as well as providing ideas for development. One concept which has been implemented is a mobile application for distribution of context based information in "mobility-expos". The concept has been developed for iOS and Android. The applications use a web service to facilitate distribution of information. The implementation is described in detail and important design choices are discussed and motivated. iBeacon context-based information iOS Android iBeacon kontextbaserad information iOS Android Computer Sciences Datavetenskap (datalogi)
4	An analysis of iBeacons and critical minimum distances in device placement Malmberg, Ivan January 2014 (has links) This project has been carried out in, and under the supervision of the Mobile Services Laboratory at the department of Communication Systems, KTH. The task was to explore the technical specifics of the iBeacon technology and its practical limitations in terms of reliability and device placement. In plain text; how close the beacons can be placed to allow for reliable isolation of the pertinent beacon. The main method of reaching the set goal was data capture at certain key positions around the mounted beacons. The resulting data was processed, analyzed and visualized to provide an accessible overview. The measurements and data analysis resulted in fairly concrete data that most of all highlights the very real limitations, and also a word of caution regarding stretching the actual limitations of such a basic technology as it actually is. / Projektet har utförts på, och under överseende av Mobile Services Laboratory på avdelningen Kommunikationssystem vid KTH. Syftet med projektet var att utforska och undersöka de tekniska detaljerna kring iBeacon-teknologin samt dess praktiska begränsningar gällande dess tillförliglighet och fysiska placering av enheterna. I klartext; hur nära iBeacon-enheterna kan placeras samtidigt som en accepterbar nivå av tillförlitlighet gällande separation av den relevanta enheten kan nås. Huvudmetoden som användes för att nå målet var datainsamling på nyckelpositioner runt de monterade enheterna. Framtagen data behandlades, analyserades och visualiserades för att kunna framställa överblickbar data. Mätningarna och dataanlysen resulterade i konkret data som framförallt lyfter de de verkliga begränsningarna för teknologin, samt ett varningens ord om vilka problem som potentiellt kan uppstå när en såpass grundläggande teknik används på ett sätt den eventuellt inte är avsedd för. Bluetooth iBeacon indoor positioning Bluetooth iBeacon inomhuspositionering Computer and Information Sciences Data- och informationsvetenskap
5	iBeaGuide導覽服務系統之設計與研發 / The Design and Implementation of iBeaGuide for Guide Service System 鄭嘉鼎, Cheng, Chia Ting Unknown Date (has links) 在博物館或各類型展覽中，導覽是非常普遍的服務。數位科技的進步帶來許多新的導覽互動體驗方式，從早期紙本、錄音機、語音導覽到目前智慧型裝置已成為重要的導覽載具，提供使用者更多便利性與行動應用的擴展。然而以現行的主要的導覽模式，使用者仍須手動操作選擇導覽內容，例如選按數字鍵盤或點選觸控畫面等，影響參觀展覽的流暢性。另外，目前在智慧型裝置上的導覽服務，多為針對展館或單一展覽設計，缺少重複使用性也無法連結使用者每次的參觀行為與經驗。本研究之目的為加強導覽內容管理效率並透過iBeacon提昇觀眾之展覽導覽服務使用體驗。結合iBeacon實作一包含網頁後台管理系統與前台統一入口app之導覽服務系統，以iBeacon基地台主動推之特性減少導覽使用者需自行操作的頻率，並同時將導覽服務由展覽品內容介紹推廣至觀眾進入展覽前、參觀展覽中、離開展覽後不同階段的服務應用，並讓觀眾能跟展覽場域有更多互動。另一方面，將導覽製作的過程簡化，展覽單位只需要操作網頁即可透過管理系統將內容上架至前端app，且可同時管理多個不同展覽。藉由前後台的配合完成一套完整的導覽服務系統，並根據使用者測試結果歸納出可改進或後續開發設計之功能建議。 / Guide service is common in exhibitions and some museums. The improvement in digital technology has brought us to a new era of guide experience. Visitors used to read guidebook or listen to an audio guide via recorder, but smart devices now play an important role in guide service. However, most of guide devices require user to press buttons or touch screen when they want to access particular exhibits and the application in those devices are designed for one specific exhibition. This research designed and developed a guide service system with iBeacon, in order to make guide content management more efficient and enhance the visitor experience. The system iBeaGuide contains a Web-based content manage system and a portal guide service mobile app for exhibition visitors. With the feature of iBeacon, users no longer need to select the guide of exhibits they are watching. When iBeaGuide app detect iBeacon signal, it will turn to the correspond page automatically, not only when watching masterpieces but also when enter the exhibition venue or close to some facilities like information desk or toilet. iBeacon content manage system is for exhibition administrator. Via this Web system, administrators can easily upload guide content and update immediately. 導覽服務系統行動導覽數位導覽 iBeacon Guide Service System Mobile Guide Digital Guide iBeacon
6	Implementation and evaluation of sensoring a user's position with React Native Falk, Daniel January 2017 (has links) Today, there are many different ways to handle physical access control. RFID cards and tags are still a major solution but during the last years the market have been focusing on taking advantage of the devices that most people always carry with them, such as smartphones, tablets or smartwatches. This thesis has been carried out together with the company BRP Systems. They develop and deliver business systems to mainly the fitness business. In their product suite there is an application for booking workout sessions at these facilities. In this thesis their booking application has been rebuilt as a prototype and the functionality of unlocking the door and checking into workout sessions has been added. The application has been developed in React Native for Android and has been implemented in three versions using different techniques to sensor the users position at the door. The techniques are iBeacon, GPS and QR code. The iBeacon- and GPS versions work by allowing the user to unlock the door when standing outside it. A local notification will be pushed if the application is in the background. The QR code version allows the user to scan a QR code at the door to unlock it. When the door has been unlocked the users can also check into their booked workout sessions. The system and the different versions have been tested at one of BRP Systems customers to evaluate the usability. The conclusion is that an application with high usability can be built with all tested techniques in React Native. For the system to be used several other factors such as security and maintenance has to be considered. The choice to use React Native might be of high risk since it is a relatively new framework relying on community developed libraries. Physical access control React Native iBeacon GPS QR code Software Engineering Programvaruteknik
7	Automatic retrieval of data for industrial machines with handheld devices : Positioning in indoor environments using iBeacons Sjöbro, Linus January 2021 (has links) Positioning of mobile phones or other handheld devices in indoor environments is hard because it’s often not possible to retrieve a GPS-signal. Therefore, other techniques need to be used for this. Despite the difficulties with indoor positioning, the Swedish mining company LKAB want to do exactly this in their processing plants. LKAB has developed an Apple iPhone mobile application to maintain real-time process data and documents for their machines. To retrieve the information an OCR code need to be manually scanned with the application. Instead of manually scanning these codes, LKAB want to develop an Indoor Positioning System that can automatically locate handheld devices in their production plants. This thesis aimed to create a proof of concept Apple iOS application that can position devices without GPS-signals. In the system developed Bluetooth Low Energy iBeacons is used to transmit data to the application. From this data Received Signal Strength Indication values is collected and sent off to a server that transform the values into positioning fingerprints. These fingerprints are used together with the classification algorithms K-Nearest Neighbour to determine in which, on pre-hand created, group the user is located. In these created groups there is a defined set of machines that is being presented back to the user. Test results conducted with the proof of concept application shows that the implemented system works and gives a positioning accuracy of up to 75%. RSSI KNN fingerprints indoor positioning Apple iOS application iBeacon Beacon Computer Engineering Datorteknik
8	iBeacon微定位技術應用於視障者行動導航之研究 / Designing a Navigation App with iBeacon Technology for the Visually Impaired Smartphone Users 林禕瑩, Lin, Yi Ying Unknown Date (has links) 手機的導航功能是一般人習以為常的生活工具，到陌生地點的路線規劃變成越來越簡單的事，不過目前多數的服務都以地圖方式呈現，資訊陳列和互動設計皆十分視覺導向，造成以聽覺操作手機的視障者覺得難以上手且不友善。統計發現，台灣國內的視障者幾乎天天都有外出需求，卻沒有一款針對他們所設計的導航服務，導致需要外出與獨立行動的視障族群必須透過更繁瑣的準備過程才得以安心的出門。再者，搭配現有導航服務的GPS定位並不夠準確，無法提供視障者所需的近身資訊，東南西北方位與百餘單位的公尺數對明眼人來說都可能是一項挑戰，視障者更是難以消化。因此，本研究透過情境訪查、隨身觀察與專家訪談等質化研究方式，深入探索視障者需求，並了解他們與一般人於行動上的異同。藉由新興的iBeacon微定位技術提供非視覺化的線索，將曲折的旅程分割成一段一段的路線，並在設計過程中融入視障者定向訓練的所知所學，讓他們能以原有技能在街道上安心行走，提升獨立出門的安全性。 / Using mobile apps to help route finding is very common for most of us. However, the visually impaired smartphone user does not benefit from this technology. A tremendous demand for independence and mobility remains unsolved. Unlike us, the visually impaired use their smartphone by auditory sense. But those apps with touch screen are not specially designed for their usage pattern. According to our preliminary study, current navigation service always comes with bad information display and unfriendly interaction design. All of these lead to a very frustrating navigation experience. Through the qualitative research methods like contextual inquiry, shadowing, and expert interview, we’d like to explore how different they are from us on the matter of traveling, and reveal the real need of the visually impaired for mobile navigation. Based on our research finding, we want to propose a navigation app specially made for the visually impaired smartphone user. In addition to GPS base service, we provide hyper-local, meaningful multi-sensory notifications to our user through micro location technology of iBeacon. And we integrate the knowledge they learned from Orientation and Mobility training in the navigation process to create a better walking experience and encourage them to live with independency. The app itself is not only a way finding tool but also an information and experience sharing platform for the visually impaired community. Combining the power of design and technology, we can enhance their cognition to the living environment, and improved the independence & mobility for our users as well. In the end, the visual impaired users will be motivated to explore the world on their own and enjoy the colorful world. 視障行動導航無障礙使用者經驗設計微定位 iBeacon 多感官 Visually Impaired Mobile Navigation Accessibility User Experience Design Micro Location iBeacon Multi Sensory
9	Inomhuspositionering och platsmedvetenhet : Automatiserad styrning av elektronik baserat på användares position Lindström, Hugo January 2016 (has links) By scanning the area for Bluetooth-signals, users can find and subscribe to Bluetooth-advertisements and thus estimate its current position. The position is used to identify what actions could be executed in the premises. This report explains the underlying technology and proposes a system architecture for a Android application that together with user authentication, WebSockets and API's could control doors, ventilation, lighting and other indoor devices wirelessly. This project was carried out in collaboration with ÅF Technology AB, Embedded Systems, where the goal was to conduct a pre-study and propose how to add contextual awareness to mobile devices, implement and evaluate a working system. / Genom att läsa av området på Bluetooth-signaler kan användare hitta och prenumerera på Bluetooth-annonseringar och därmed skatta sin position. Positionen används för att identifiera vilka handlingar som trådlöst kan uträttas i lokalen. Denna rapport förklarar bakomliggande teknik och föreslår systemarkitektur för en Android applikation som tillsammans med Autentisering, WebSockets och tillhörande API kan styra närliggande elektriska enheter, så som ventilation, dörrar och kaffemaskiner. Detta projekt utfördes tillsammans med ÅF Technology AB, Embedded Systems där målet är att genomföra en förstudie där möjliga teknologier, arkitektur, API:er samt hårdvara utvärderas som ligger till grund för implementering och utvärdering av ett fungerande system. Javascript Java M2M Bluetooth iBeacon Wireless Android ARM Linux Node.JS WebSockets C Indoor positioning. avascript Java M2M Bluetooth iBeacon Trådlöst Android ARM Linux Node.JS WebSockets C Inomhuspositionering. Software Engineering Programvaruteknik
10	Smart destinace cestovního ruchu / Smart Tourism Destination KALOUŠOVÁ, Michaela January 2019 (has links) Based on an analysis of the smart city and smart region concepts and case studies, the aim of the thesis was to identify the possibilities of their use in the tourism industry and to create a proposal for their application in selected tourist destinations. In cooperation with the selected destination of Písek, which endorses the smart city concept, and based on discussions with city representatives, the objective was narrowed down to the introduction of new iBeacon technology implemented in Písek through the eCulture project. This technology helps fulfil the concept of the smart city as a tourist destination. The main goal of applying this method is effective presentation of the City of Písek. Together with the destination company Píseckem, s.r.o., a total of 12 beacons were proposed in the historic city centre and three more in its immediate vicinity. First, the content of individual beacons was prepared in the practical part of the research, which was divided into basic and supplementary text. The basic text provides the main information, while the supplementary text is primarily designed to attract attention. Subsequently, the destination company was provided with graphic designs for display-ing information to end-users through selected beacons. To ensure effective presentation of the City of Písek through iBeacon technol-ogy, selected visuals were tested with an eye camera. Eye tracking is a modern research method in which the eye movements of participants (respondents) are monitored. The results were presented using heat maps, which show the intensity with which individual places in the graphic design are viewed by respondents. The proposal part of the thesis was prepared based on the results of eye tracking tests and subsequent in-depth interviews. A total of four graphic designs were created, namely beacon 01 (Great Square), beacon 02 (Town Hall Courtyard), beacon 03 (Church of the Exaltation of the Holy Cross) and beacon 05 (Bakaláře).

Search results