Thematische Bibliographien / SPI communication protocol

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Auswahl der wissenschaftlichen Literatur zum Thema „SPI communication protocol“

Autor: Grafiati

Veröffentlicht am 15. September 2021

Zuletzt aktualisiert am 3. Februar 2022

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Zeitschriftenartikel zum Thema "SPI communication protocol"

SUSANA, RATNA, MUHAMMAD ICHWAN und SAVERO AL PHARD. „Penerapan Metoda Serial Peripheral Interface (SPI) pada Rancang Bangun Data Logger berbasis SD card“. ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 4, Nr. 2 (14.03.2018): 208. http://dx.doi.org/10.26760/elkomika.v4i2.208.

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ABSTRAKSerial Peripheral Interface (SPI) adalah protokol komunikasi yang dapat digunakan sebagai interface komunikasi antara mikrokontroler dengan SD Card. Dengan menerapkan metoda SPI pada data logger berbasis SD Card, maka dapat diketahui karakteristik protokol komunikasi SPI antara mikrokontroler dengan SD Card. SD Card diformat dengan tipe FAT 16, dan data di dalam SD Card berupa sekumpulan paket data sensor yang diambil secara periodik dan disimpan dalam bentuk file dengan format.csv. Berdasarkan format paket data sensor yang dibuat, dapat dihitungwaktu perekaman data yang diperlukan agar kapasitas SD Card terisi penuh oleh data sensor. Hasil penelitian menunjukkan,bahwa metoda SPI yang diterapkan pada penelitian ini memiliki sifat akan melakukan pemeriksaan berulang pada pin MISO terhadap command yang dikirimkan oleh mikrokontroler melalui pin MOSI. Proses read/write data pada SD Card data logger memiliki keberhasilan 100%, karena SD Card telah terinisialisasi dalam mode SPI melalui perintah reset dan init SD Card. Komunikasi ini dapat dilakukan dengan menggunakan crystal 4 Mhz – 20 Mhz. Untuk pengujian konfigurasi SPI, hanya Independent Slave Configuration yang dapat digunakan pada komunikasi SPI dengan 2 SD card sebagai slave. Kata kunci: Serial Peripheral Interface (SPI), Data Logger, SD card, FAT16ABSTRACTSerial Peripheral Interface (SPI) is a communication protocol that can be applied as a communication interface between microcontroller to SD Card. By implementing the SPI method to a data logger based on SD Card, it can be known the characteristics of the SPI communications protocol between microcontroller to SD Card. SD Card formatted in FAT 16 type, and data on the SD Card is the form of sensor data packets collection which be captured periodically and saved in .csv format file. Based on the sensor data packet format is created, it can be calculated recording time data required so that the SD Card capacity completely filled by the sensor data. Research results show, that the SPI method applied in this study has the properties will do repeated testing on MISO pin to the command sent by the microcontroller through the MOSI pin. The read / write data on the SD Card data logger has a 100% success, because the SD Card has been initialized in SPI mode through the reset and init SD Card command. This communication can be established using crystal 4 Mhz - 20 Mhz. At SPI configuration testing, only the Independent Slave Configuration can be used in SPI communication with 2 SD card as a slave.Keywords: Serial Peripheral Interface (SPI), Data Logger, SD card, FAT16

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Zhou, Dao Xian, Cui Xia Zhang, Li Li Liu und Shuo Han. „Design and Realization of Infrared Simulation of SPI Communication“. Advanced Materials Research 945-949 (Juni 2014): 2284–88. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2284.

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The Infrared transfer using data transport protocol plus sign, plus software validation for data transmission, is usually transfer technology. This article provides an overview of the design of hardware circuit simulation of infrared transmission of SPI protocol, and details about the process of transmitting and the receiving program and how it works, and points out some problems which need paying more attention in the design process.

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Wei, Jun Chao, Guo Yuan Zhang, Yao Chen und Xiu Tian Yan. „Design of a Communication Interface between the Controller and the Galvanometer“. Applied Mechanics and Materials 527 (Februar 2014): 269–72. http://dx.doi.org/10.4028/www.scientific.net/amm.527.269.

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In a laser marking system, a laser marking controller should be designed to control several galvanometers through a certain interface using a certain protocol, such as the XY2-100 or SPI. The selection of the protocol depends on the configuration of the laser marking system. Using different protocols makes the controller design provide two types of interfaces. If different protocols have their own physical interfaces, the circuit becomes more complicated. In order to decrease the number of physical interfaces and ensure the protocol compatibility at the same time, two protocol signal generator modules based on FPGA are provided and the output signals of the two modules share the same physical interface, and only one of them can be chosen according to a flag set by users. This design makes the circuit simpler and decreases the design cost.

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Grossardt, Ted, Keiron Bailey und Joel Brumm. „Structured Public Involvement: Problems and Prospects for Improvement“. Transportation Research Record: Journal of the Transportation Research Board 1858, Nr. 1 (Januar 2003): 59–102. http://dx.doi.org/10.3141/1858-13.

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Public involvement in transportation planning and design has a problematic history. Professionals lack access to a coherent, organized method for communicating with the public, and some important principles of public involvement known to community design professionals are still being discovered by transportation professionals. A protocol, structured public involvement (SPI), is proposed. SPI was designed to ensure that public involvement is meaningful to the professional and the public. Principles of SPI are presented, and a series of steps useful for engaging the general public in a complex design or planning problem is given. SPI is intended to be transparent, accountable, democratic, and efficient. SPI places the use of technology within a public involvement framework built on community design experience. While technology can be useful, it must be placed in a social context. That is, various technologies are used because they can address such problems as lack of access to information, inconvenient and time-consuming meetings, confusing terms and graphics, and one-way communication. Highlights and examples are drawn from practical experience, where SPI protocols have been designed and used to solve problems of route planning, highway design, and transit-oriented development. While each problem set called for a different mix of technical tools, the protocol within which those tools were used was the same, with similar encouraging results. With SPI, public participation is less contentious and more informed, and the professional has information of high quality with which to begin the design process.

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Zhang, Haifan, und Fei Ye. „SPI Implementation Based on M2e Microprocessor“. MATEC Web of Conferences 232 (2018): 04079. http://dx.doi.org/10.1051/matecconf/201823204079.

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Normally, the computer reads, writes and other control operations on the M2 board through the UART protocol. Our goal is to achieve control of the M2 board through the SPI protocol. The specific implementation is to use an M2 board (Master M2) as an intermediary to achieve control of the target M2 board (Slave M2). The communication between the user computer and the Master M2 still uses the UART protocol. The SPI protocol is used between the Master M2 and the Slave M2. The read/write and other operations of the Slave M2 board no longer need to occupy the UART resources of the user's computer, which eliminates the inconvenience of connecting two computers at the same time. In the case where data transmission is required for multiple M2 boards at the same time, a solution for improving efficiency and reducing cost is provided.

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Li, Li Li, Jing Yu He, Yong Peng Zhao und Jian Hong Yang. „Design of Microcontroller Standard SPI Interface“. Applied Mechanics and Materials 618 (August 2014): 563–68. http://dx.doi.org/10.4028/www.scientific.net/amm.618.563.

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This paper describes a design of high-speed and reusable SPI interface model which is used for Microcontroller. The SPI interface is designed by very simple but universally useful method, used a FIFO to improve transmission speed and supported data serial input and parallel output which other interface didn’t mentioned. The paper analyses the function of every module of SPI interface and standard 8051 microcontroller interface communication protocol, describes the design project of implement SPI logical function. After testbench and FPGA verification, the results indicate that the microcontroller SPI interface function and performance are all achieve design target, many communication tests indicate the design is reliable in performance and more universal.

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Visconti, P., G. Giannotta, R. Brama, P. Primiceri, A. Malvasi und A. Centuori. „FEATURES, OPERATION PRINCIPLE AND LIMITS OF SPI AND I2C COMMUNICATION PROTOCOLS FOR SMART OBJECTS: A NOVEL SPI-BASED HYBRID PROTOCOL ESPECIALLY SUITABLE FOR IoT APPLICATIONS“. International Journal on Smart Sensing and Intelligent Systems 10, Nr. 2 (2017): 262–95. http://dx.doi.org/10.21307/ijssis-2017-211.

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Chen, Shih-Lun, Tsun-Kuang Chi, Min-Chun Tuan, Chiung-An Chen, Liang-Hung Wang, Wei-Yuan Chiang, Ming-Yi Lin und Patricia Angela R. Abu. „A Novel Low-Power Synchronous Preamble Data Line Chip Design for Oscillator Control Interface“. Electronics 9, Nr. 9 (14.09.2020): 1509. http://dx.doi.org/10.3390/electronics9091509.

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In this paper, a novel low-power synchronous preamble data line protocol chip design for serial communication is proposed. The serial communication only uses two wires, chip select (CS) and secure digital (SD), to transmit and receive data between two devices. The proposed protocol aims to use a fewer number of wires for the interface, therefore reducing the complexity as well as the area of the chip design. Moreover, it increases the efficiency through a synchronous serial communication-controlled oscillator. The low-power synchronous preamble data line protocol design was successfully verified using a field-programmable gate array (FPGA) as a master device and a real chip as a slave device. The signals are checked through the use of a logic analyzer. The realized low-power synchronous preamble data line protocol chip design has a gate count of only 5.07 K gates, a low power dissipation of 12 mW, and a chip area of 453,260 μm2 using the Taiwan semiconductor manufacturing company (TSMC) 0.18 μm CMOS process. Compared with the three-wire serial peripheral interface (SPI) protocol, the proposed design has the advantages of having a lower cost and a lower power consumption.

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Rieke Adriati Wijayanti, Ahmad Wilda Yulianto, Dianthy Marya, Muhammad Syirajuddin S. und Nurul Hidayati. „Antarmuka Mikrokontroller IoT (ESP32) Dengan USB Host max3421e“. Journal of Applied Smart Electrical Network and Systems 1, Nr. 02 (31.12.2020): 70–75. http://dx.doi.org/10.52158/jasens.v1i02.141.

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Electronic equipment made using old technology or electronic equipment in the entry-level category has not been supported by networking equipment, so for the data communication process, the microcontroller requires interfacing facilities that are in accordance with the electronic equipment used, such as a USB port. With the microcontroller that supports IoT, it allows electronic equipment to communicate over the network. An IoT microcontroller such as the ESP32 is equipped with a WiFi feature but is not equipped with a USB controller feature, while the USB Host max3421e supports the communication process using SPI, so that those two microcontrollers can be used to form an interface using the SPI bus. This interface can be applied to electronic equipment with old technology and entry level electronic equipment for wireless communication. For the needs of making an interface between the ESP32 and max3421e, a software was developed by analyzing the SPI features of the ESP32 and the USB protocol according to the USB device state diagram. The results obtained are the handshake process between systems developed with USB devices in the Low-Speed and Full-Speed categories such as printers, flashdisk, bluetooth mouse and external hard disk, and the device descriptor data of each device tested can be read properly.

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Visconti, P., G. Giannotta, R. Brama, P. Primiceri, R. de Fazio und A. Malvasi. „OPERATION PRINCIPLE, ADVANCED PROCEDURES AND VALIDATION OF A NEW FLEX-SPI COMMUNICATION PROTOCOL FOR SMART IoT DEVICES“. International Journal on Smart Sensing and Intelligent Systems 10, Nr. 3 (2017): 506–50. http://dx.doi.org/10.21307/ijssis-2017-222.

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Dissertationen zum Thema "SPI communication protocol"

Sharma, Neena. „SERIAL PROTOCOL BRIDGE“. University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352403332.

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Richert, Adam. „Developing a Portable System for Medicine Dosage“. Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235738.

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The project presented in this report is set out to develop a portable electronic system to be used as a medicine pill container. With the functionality to configure up to twelve daily repeated alarms, the purpose of the medicine dosage system is first and foremost to remind the user when they should take their medicine. Secondly, LED lights and user-recorded voice notifications are to be implemented to further aid the user in taking the right medicine each time. The device is also to have a memory log, recording up to one hundred missed dosages, enabling an authorized medicine professional to verify the medicine adherence of the user.Prior to the start of the project, an outline for the functionality and physical appearance of the device was set by the project owner, Victrix AB. This project covers the hardware and software development, as well as the design choices within. The aim is to follow the proposed functionality specification as close as possible, while making justified hardware and software choices considering simplicity, efficiency, power consumption, and availability. By following the specification, the goal is ultimately to increase the medicine adherence for users of the device developed with this thesis.Using qualitative research methods, a valid background study was created, preceding the development of the medicine dosage system. Hardware for a first prototype of the device was then chosen based on the gathered information about existing technologies and related work. With thorough testing and recurrent information exchange with the client, a prototype of the medicine dosage system, based on an Arduino microcontroller, was constructed. The prototype was evaluated to fulfill 92% of the requirements considered as high priority by Victrix.
Projektet som presenteras i denna rapport är tänkt att utveckla ett portabelt elektroniskt system för användning som en medicinsk pillerbehållare. Med funktionaliteten att konfigurera upp till tolv dagligen upprepande alarm är syftet med medicindoseringssystemet först och främst att påminna användaren när de ska ta sin medicin. Lysdioder och användarens egna inspelade röst som notifikationer ska implementeras för att vidare hjälpa användaren att ta rätt medicin vid varje tillfälle. Enheten ska också ha en minneslogg som sparar upp till etthundra missade doseringar, vilket gör det möjligt för auktoriserad sjukvårdspersonal att verifiera användarens följsamhet till medicineringen.En översiktlig beskrivning av funktionaliteten samt det fysiska utseendet av enheten skrevs av projektägaren Victrix AB innan projektet startades. Det som detta projekt täcker är hårdvaruoch mjukvaruutvecklingen, så väl som där tillhörande designval. Projektet siktar på att följa den föreslagna funktionalitetsspecifikationen så nära som möjligt, och samtidigt göra välgrundade val för hårdoch mjukvara med enkelhet, effektivitet, energiförbrukning och tillgänglighet i åtanke. Genom att följa specifikationen är det slutliga målet att frambringa ökad medicinföljsamhet för användare av den med det här projektet utvecklade enheten.Utvecklingen av medicindoseringssystemet föregicks av en befogad bakgrundsstudie utformad genom användningen av kvalitativa forskningsmetoder. Hårdvara att användas för en första prototyp av enheten valdes sedan baserat på den insamlade informationen om existerande teknologier och relaterat arbete. Genom grundliga tester och regelbundet informationsutbyte med kunden konstruerades en prototyp av medicindoseringssystemet baserat på en Arduinomikrokontroller. Prototypen utvärderades att uppfylla 92% av kraven som Victrix ansåg vara av hög prioritet.

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Costa, Daniel Gouveia. „Uma arquitetura baseada em SCTP e SIP para suporte a aplica??es VoIP m?veis e a especifica??o formal do seu m?dulo de controle“. Universidade Federal do Rio Grande do Norte, 2006. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15461.

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Made available in DSpace on 2014-12-17T14:56:09Z (GMT). No. of bitstreams: 1 DanielGC.pdf: 538651 bytes, checksum: 34bfc134a2af9166b846b044a2968b16 (MD5) Previous issue date: 2006-05-25
New versions of SCTP protocol allow the implementation of handover procedures in the transport layer, as well as the supply of a partially reliable communication service. A communication architecture is proposed herein, integrating SCTP with the session initiation protocol, SIP, besides additional protocols. This architecture is intended to handle voice applications over IP networks with mobility requirements. User localization procedures are specified in the application layer as well, using SIP, as an alternative mean to the mechanisms used by traditional protocols, that support mobility in the network layer. The SDL formal specification language is used to specify the operation of a control module, which coordinates the operation of the system component protocols. This formal specification is intended to prevent ambiguities and inconsistencies in the definition of this module, assisting in the correct implementation of the elements of this architecture
Novas vers?es do protocolo SCTP permitem sua utiliza??o para implementa??o de mecanismos de handover em n?vel de transporte, bem como o fornecimento de um servi?o de transmiss?o de dados parcialmente confi?vel. Integrando o SCTP com o protocolo de inicia??o de sess?es, SIP, al?m de utilizar adicionalmente servi?os de outros protocolos auxiliares, uma arquitetura de comunica??o p?de ser proposta, a fim de atender ?s aplica??es de voz sobre IP com requisitos de mobilidade. S?o especificados ainda os procedimentos de localiza??o de usu?rio em n?vel de aplica??o, utilizando o protocolo SIP, como alternativa aos mecanismos empregados por protocolos tradicionais que suportam mobilidade na camada de rede. A linguagem de especifica??o formal SDL ? utilizada para especificar o funcionamento de um M?dulo de Controle, relacionado ? opera??o coordenada dos protocolos que comp?e a arquitetura. Pretende-se assim evitar ambig?idades e inconsist?ncias na defini??o desse m?dulo, o que pode auxiliar em implementa??es corretas de elementos dessa arquitetura

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Lakay, Elthea Trevolee. „SIP-based content development for wireless mobile devices with delay constraints“. Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9048_1182233050.

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SIP is receiving much attention these days and it seems to be the most promising candidate as a signaling protocol for the current and future IP telephony services. Realizing this, there is the obvious need to provide a certain level of quality comparable to the traditional telephone service signalling system. Thus, we identified the major costs of SIP, which were found to be delay and security. This thesis discusses the costs of SIP, the solutions for the major costs, and the development of a low cost SIP application. The literature review of the components used to develop such a service is discussed, the networks in which the SIP is used are outlined, and some SIP applications and services previously designed are discussed. A simulation environment is then designed and implemented for the instant messaging service for wireless devices. This environment simulates the average delay in LAN and WLAN in different scenarios, to analyze in which scenario the system has the lowest costs and delay constraints.

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El, Saghir Bassam. „A new approach for context-aware management of SIP communications“. Evry, Institut national des télécommunications, 2009. http://www.theses.fr/2009TELE0009.

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Le secteur mondial de télécommunications a connu des bouleversements sans précédent pendant ces dernières années avec l’avènement de nouveaux services et de nouvelles technologies de communication. Les opérateurs de télécommunications subissent en effet une décroissance continue de leur revenu par utilisateur en raison d’une compétition toujours accrue et, dans une certaine mesure, de la saturation du marché pour les services les plus traditionnels. Afin d’attirer de nouveaux usagers, de retenir ceux qui existent déjà et d’augmenter le revenu par usager, les services de communication proposés par les opérateurs doivent prendre en compte le contexte de l’utilisateur. L’interfonctionnement entre les solutions proposées pour la prise en compte du contexte et les réseaux de communication actuels et de nouvelle génération représentent un grand défi tant pour les opérateurs que les fournisseurs de services de communications. Ce travail de thèse traite des questions relatives au développement des systèmes de communications adaptés au contexte en proposant un agent coté réseau nommé INCA (Intelligent Network-based Communication Assistant). L’INCA permet une gestion avancée des communications SIP (Session Initiation Protocol) adaptée aux informations de contexte qui sont recueillies à travers un cadre dédié à la publication et la notification de contexte. Son architecture multicouche est basée sur un modèle de couche générique et elle implémente une approche orientée plan pour la gestion des sessions SIP. Elle repose aussi sur un nouveau modèle de communication avec prise en compte du contexte pour permettre une adaptation des communications basée sur les préférences utilisateur
In recent years, the world telecommunications sector has undergone unprecedented changes driven mainly by the deployment of new communication technologies and services. Telecom operators are suffering from a steady decline in their revenues per user due to fierce competition and market saturation for traditional services. In order to attract new customers and retain existing ones, communication services proposed by these operators need to be aware of the user’s context, which includes information related to the user himself as well as his environment (e. G. His location, current activities and available devices). Unfortunately, interworking proposed context-aware solutions with current and next-generation networks still represents a big challenge for communication service providers as well as operators. This thesis addresses issues related to the development of context-aware communication systems by proposing a network-based agent called INCA (Intelligent Network-based Communication Assistant). INCA provides advanced management of SIP communications based on context information that is retrieved through a dedicated framework for context publication and notification. Its multilayered architecture is based on a generic layer model and implements a plan-centric approach for SIP session management. It also relies on a new context-aware communication model for providing communication adaptation based on user preferences

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Troudi, Rami. „Étude, conception et structure de commande temps réel d'un onduleur multiniveau à partir d'une seule source DC ; applications énergies renouvelables et véhicules électriques“. Thesis, Poitiers, 2021. http://www.theses.fr/2021POIT2262.

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Les travaux de recherche de la thèse de Rami Troudi répondent à trois problématiques :-la première est de concevoir un onduleur triphasé multiniveau pour des applications à base d’énergies renouvelables connectées au réseau de distribution, ou pour la motorisation des véhicules électriques. Dans la première application, l’utilisation de bras multiniveau limite fortement les inductances de couplage avec le réseau tandis que dans la deuxième application, le couple délivré par le moteur est de meilleure qualité.-la deuxième consiste à concevoir une structure de convertisseur DC-DC permettant de n’avoir qu’une seule source continue pour alimenter cet onduleur multiniveau. -la troisième est la conception d’une architecture de commande temps réel à base de microcontrôleurs permettant d’avoir une grande capacité d’évolution et de calcul et une facilité d’industrialisation.Le manuscrit de la thèse est organisé en quatre chapitres. Le premier chapitre présente un état de l’art des structures d’onduleur multiniveau. Cette technologie est devenue aujourd’hui un thème de recherche important. Ce chapitre donne les avantages et les inconvénients de chaque topologie d’onduleur multiniveau conventionnel ainsi que les nouvelles topologies permettant une réduction du nombre de composants. Ce chapitre fait aussi un état de l’art des structures de hacheurs avec une ou plusieurs entrées-sorties (MISO, MIMO et SIMO). Ce chapitre présente aussi les avantages et les inconvénients de chaque famille de structure avec leur commande. La fin du chapitre présente les nouvelles topologies retenues pour l’onduleur multiniveau et le hacheur SIQO (une entrée-quatre sorties).Le deuxième chapitre est consacré à la présentation de la structure de l’onduleur multiniveau proposé, ainsi qu’à l’étude de son mode de fonctionnement, de sa commande rapprochée et de son utilisation dans une application en boucle fermée. Ce chapitre montre que cette structure a l’avantage de minimiser les pertes dans les composants de puissance en ayant, à chaque instant, peu de composants qui conduisent le courant de chaque bras, ce qui permet d’augmenter son rendement. En plus, ce chapitre montre la simplicité de la commande rapprochée de l’onduleur en utilisant un algorithme très simple. Des essais expérimentaux sont donnés à la fin du chapitre après le descriptif de la maquette d’essai.Le troisième chapitre traite en détail la structure du convertisseur DC-DC SIQO utilisé pour alimenter l’onduleur multiniveau, son mode de fonctionnement, sa modélisation et le développement d’une commande multi-entrée multi-sortie (MIMO). Cette structure est conçue à partir d’un couplage de la structure SEPIC avec la structure à accumulation magnétique et du dédoublement de chaque sortie par un système d’aiguillage qui permet ainsi d’obtenir quatre sorties à partir d’une seule entrée DC. Chaque structure (SEPIC et à accumulation) gère deux sorties avec le calcul de deux rapports cycliques. Pour cela, une synthèse d’asservissement basée sur une méthode H_∞ est présentée pour être robuste aux variations des courants et aux changements de consigne. Les résultats des essais expérimentaux sont donnés à la fin du chapitre après le descriptif de la maquette d’essai.Le chapitre quatre aborde le développement de l’architecture de commande à base de microcontrôleurs. Cette structure est appliquée au contrôle de l’onduleur triphasé. Ce chapitre décrit toutes les fonctions qui composent cette architecture au niveau matériel et logiciel. Le fait de répartir les besoins matériels et algorithmiques sur plusieurs microcontrôleurs permet de faciliter l’évolution des demandes de fonctions supplémentaires à savoir le diagnostic et la reconfiguration d’un bras, ainsi que l’ajout de la fonction de filtrage actif. Cette architecture repose sur une communication par bus SPI (Serial Peripheral Interface) qui permet des échanges rapides entre les microcontrôleurs et aussi vers un système IHM (Interface Homme Machine)
Rami Troudi's thesis research work addresses three problematics:- the first is to design a three-phase multilevel inverter for applications based on renewable energies connected to the power grid, or for electric motor drive of electric vehicles. In the first application, the use of multilevel arms greatly limit the coupling inductances with the power grid, while in the second application, the torque delivered by the motor is of better quality.- the second is to design a DC-DC converter structure having only one DC source destinated to supply this multilevel inverter.- the third is the design of a real-time control architecture based on microcontrollers leading to a large capacity of evolution and calculation and an ease industrialization.The thesis manuscript is organized into four chapters.The first chapter presents a state of art of multilevel inverter structures. This technology is becoming an important research topic today. This chapter gives the advantages and disadvantages of each conventional multilevel inverter topology as well as the new topologies with a reduction in the number of components. This chapter also give a reviews of the state of art of chopper structures with one or multiple inputs-outputs (MISO, MIMO and SIMO). This chapter also presents the advantages and the disadvantages of each family of structure with their regulation. The end of the chapter presents the new topologies retained for the multilevel inverter and the SIQO chopper (one input-four outputs).The second chapter is devoted to the presentation of the structure of the proposed multilevel inverter, as well as to the study of its mode of operation, its close control device and its use in a closed loop application. This chapter shows that this structure has the advantage of minimizing losses in power components by having, at any time, few components that conduct the current of each arm, which allows to increase its efficiency. In addition, this chapter shows the simplicity of the used close control of the inverter employing a very simple algorithm. Experimental tests are given at the end of the chapter after the description of the test bed.The third chapter discusses in detail the structure of the SIQO DC-DC converter used to supply the multilevel inverter, its operation mode, its modeling and the development of a multi-input multi-output (MIMO) control. This structure is designed from a coupling of the SEPIC structure with the buck-boost structure and the doubling of each output by a switching system which leads to obtain four outputs from a single DC input. Each structure (SEPIC and buck-boost) manages two outputs with the calculation of two duty cycles. For this, a control synthesis based on an Hinfini method is presented to be robust to the variations of the currents and the changes of the setpoint. The results of the experimental tests are given at the end of the chapter after the description of the test bed.Chapter four discusses the development of one architecture based on multi-microcontroller system. This structure is applied to the control of the three-phase multilevel inverter. This chapter describes all the functions that compose this architecture at the hardware and software level. The distribution of the hardware and algorithmic needs several microcontrollers makes it easier to evolve the demands for additional functions, namely the diagnosis and reconfiguration of an arm, as well as the addition of the active filtering function. This architecture is based on SPI (Serial Peripheral Interface) bus communication which allows rapid exchanges between the microcontrollers and also towards an HMI (human-machine interfaces) system

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Bédard, Normand. „Sécurité d'une application de communication multimédia sous protocole IP dans un contexte médical“. Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/1530.

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L'application MédiclP est un logiciel de télémédecine permettant à des spécialistes de la santé d'entrer en communication lors de situations d'urgence. Ce prototype, développé depuis 2005, permet des communications audio ainsi que le transfert d'électrocardiogrammes en temps réel. Le scénario typique visé par ce projet était de permettre à une équipe ambulancière qui récupère un blessé sur la route, ou quelqu'un victime d'un malaise cardiaque, d'entrer en contact avec les hôpitaux les plus près afin de déterminer lequel est le plus apte à recevoir adéquatement ce patient. Cette approche permettrait d'améliorer la préparation, la qualité et la rapidité des opérations médicales à l'hôpital lorsque le patient se présente. Le présent projet, SécureMédic, se veut un moyen d'aborder le problème de la sécurité entourant ce prototype, étant donné son utilisation dans un contexte médical. Une analyse de MédicIP a permis d'identifier quatre failles de sécurité critiques reliées aux authentifications usagers, aux établissements des conférences, aux transferts des données audio ainsi qu'aux transferts des électrocardiogrammes. La contribution majeure de ce projet a été la création d'une infrastructure dédiée au processus d'authentification des usagers. Le système développé permet deux types d'authentification, fournissant ainsi un excellent niveau de robustesse. De plus, le serveur principal développé dans cette infrastructure intègre des mesures de protection permettant de minimiser les impacts de certains types d'attaque. Le projet SécureMédic a permis de démontrer la faisabilité de la sécurisation d'une application de télémédecine en utilisant les techniques de protection et les standards actuels de l'industrie. Les résultats de tests comparatifs ont cependant permis de constater que des impacts reliés à la performance ont été engendrés par l'ajout des mesures de sécurité, dus principalement aux ressources requises pour le chiffrement et le déchiffrement des données dans un environnement multimédia temps réel. Bien qu'il soit encore trop tôt pour envisager le déploiement du système actuel dans le milieu de la santé, les projets MédicIP et SécureMédic sont un pas dans la bonne direction. Le prototype actuel répond aux exigences techniques voulues, répond à un besoin bien réel et est parmi les premières solutions concrètes à démontrer la faisabilité d'un tel système. D'ici quelques années, l'apparition de solutions similaires est assurée.

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Elleuch, Wajdi. „Mobilité des sessions dans les communications multimédias en mode-conférence basées sur le protocole SIP“. Thèse, Université de Sherbrooke, 2011. http://hdl.handle.net/11143/5799.

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Ce mémoire traite la problématique de la mobilité des sessions pour le transfert des communications multimédias basées sur le protocole SIP. Plusieurs aspects sont étudiés et des mécanismes proposés afin de permettre la mobilité des sessions avant, durant et après leur établissement. En plus d'une communication impliquant deux intervenants, Il a été possible d'étendre l'utilisation de la mobilité des sessions pour l'appliquer aux scénarios de communications en mode conférence regroupant plusieurs intervenants. Les mécanismes de mobilité de session développés au cours de cette thèse sont par la suite déployés pour (1) permettre des transformations entre différentes topologies de conférences et (2) construire un modèle de conférence adapté pour l'échange de la voix au sein des groupes de communication à large échelle.

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Hussain, Intesab. „Solving flooding and SPIT based denial of service problems in voice over IP communications“. Thesis, Paris 5, 2013. http://www.theses.fr/2013PA05S007.

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Pas de résumé en français
Session Initiation Protocol (SIP) is the widely used signaling protocol for voiceand video communication as well as other multimedia applications. Despiteof its flexibility and a common standard that can be leveraged to efficientlycombine a wide array of communication systems and technologies, it is exposedto a number of problems, including the vulnerability to several types of attacksdue to its open nature, in particular, and lack of a clear defense line. Likewise,flooding attack is one of the most destructive attacks targeting both User AgentServer (UAS) and User Agent Client (UAC), leading to a Denial of Service (DoS)in VoIP applications. In particular, INVITE message is considered as one of themajor root causes of flooding attacks in SIP. This is due to the fact that an attackermay send numerous INVITE requests without waiting for responses from theUAS or proxy in order to exhaust their resources. Moreover, SPIT problem inSIP is also a challenging issue which needs proper attention and appropriatesolutions.Most of the solutions proposed to overcome the flooding attacks are eitherdifficult to deploy in practice or require significant changes in the SIP servers.Additionally, the diverse nature of flooding attacks offers a huge challenge toenvisage appropriate prevention mechanisms. In this survey, we present acomprehensive study on flooding attacks against SIP by addressing its differentvariants and analyzing its consequences. We also classify the existing solutionscorresponding to different flooding behaviors, types and targets, and then weperform an extensive investigation of their main weaknesses and strengths.Additionally, we also take into account the underlying assumptions of eachsolution for a better understanding of its limitations. Specifically, we havethoroughly analyzed SPIT problems and few of the existing solutions proposedfor their prevention.The theoretical framework derived from our extensive literature survey led us topropose a solution for handling specific number of SIP requests in a particulartime window. Our proposed "Light Weight Scheme" is implemented in a SERSIP server. The evaluation results presented in this thesis depict the satisfactoryperformance of this approach. In order to cope with SIP flooding attacks, wepropose another solution based on "Strategy Based Proxy". This solution isdesigned for a SIP proxy that calculates the probability of a call being maliciouson the basis of its current experience. The obtained experience is also utilized tocalculate the probabilities of a successful call setup. This approach is useful forboth state-ful and state-less proxy servers.For dealing with SPIT, we have designed a 2-step solution. In first step, weextract the useful information from the VoIP traffic. In second step, we apply aNaive Bayes classifier on the date extracted from first step to determine whetherthe nature of an incoming SIP call is malicious or it is a harmless routine call.With this mechanism, we can detect the SPIT calls from a group of incomingSIP calls. Finally, we presents a detailed discussion and conclusions derivedfrom our case study carried out in this thesis along with future directions andpotential research areas related to VoIP security threats

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Iqbal, Zeeshan. „Self-Organizing Wireless Sensor Networks For Inter-Vehicle Communication“. Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-230.

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Now a day, one of the most attractive research topics in the area of Intelligent Traffic Control is

Inter-vehicle communication (V2V communication). In V2V communication, a vehicle can

communicate to its neighbouring vehicles even in the absence of a central Base Station. The

concept of this direct communication is to send vehicle safety messages one-to-one or one-to-

many vehicles via wireless connection. Such messages are usually short in length and have very

short lifetime in which they must reach the destination. The Inter-vehicle communication system

is an ad-hoc network with high mobility and changing number of nodes, where mobile nodes

dynamically create temporary sensor networks and transferring messages from one network to

others by using multiple hops due to limitation of short range.

The goal of the project is to investigate some basic research questions in order to organize such

sensor networks and at the same time highlight the appropriate routing protocol that support

mobile ad hoc networks in an efficient and reliable manner.

In our investigation, we have answered the technical issues in order to construct a V2V

communication system. We have also studied some mobile ad hoc network routing protocols in

detail and then selected the DSR (Dynamic Source Routing) for our V2V communication and

then simulated it according to our system requirements. We are quite satisfied by the result of

DSR, but at the same time much more work is required to come up with an absolute application

for the end user.

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Mehr Quellen

Bücher zum Thema "SPI communication protocol"

Perea, Rogelio Martínez. Internet multimedia communications using SIP: A modern approach including Java practice. Amsterdam: Elsevier/Morgan Kaufmann, 2008.

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Sinnreich, Henry. Internet communications using SIP: Delivering VolP and multimedia services with session initiation protocol. New York: Wiley, 2001.

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Session Initiation Protocol (SIP). New York: McGraw-Hill, 2008.

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Session Initiation Protocol (SIP): Controlling convergent networks. New York: McGraw-Hill, 2008.

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Internet Communications Using SIP. New York: John Wiley & Sons, Ltd., 2006.

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Johnston, Alan B., und Henry Sinnreich. Internet Communications Using SIP. Wiley, 2001.

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Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol (Networking Council). Wiley, 2006.

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Johnston, Alan B., und Henry Sinnreich. Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol. Wiley & Sons, Incorporated, John, 2012.

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Johnston, Alan B., und Henry Sinnreich. Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol. Wiley & Sons, Incorporated, John, 2008.

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Internet Multimedia Communications Using SIP: A Modern Approach Including JavaÂ® Practice (The Morgan Kaufmann Series in Networking) (The Morgan Kaufmann Series in Networking). Morgan Kaufmann, 2008.

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Buchteile zum Thema "SPI communication protocol"

Subero, Armstrong. „USART, SPI, and I2C: Serial Communication Protocols“. In Programming PIC Microcontrollers with XC8, 209–76. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-3273-6_9.

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Chen, Tien-ho, Hsiu-lien Yeh, Pin-chuan Liu, Han-chen Hsiang und Wei-kuan Shih. „A Secured Authentication Protocol for SIP Using Elliptic Curves Cryptography“. In Communication and Networking, 46–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-17587-9_6.

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De Marco, G., S. Loreto, G. Sorrentino und L. Veltri. „SIP-H323: A Solution for Interworking Saving Existing Architecture“. In NETWORKING 2002: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications, 1111–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-47906-6_93.

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Stier, Michael, Emanuel Eick und Eckhart Koerner. „A Practical Approach to SIP, QoS and AAA Integration“. In NETWORKING 2006. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems, 654–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11753810_55.

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Kist, Alexander A., und Richard J. Harris. „A Simple Model for Calculating SIP Signalling Flows in 3GPP IP Multimedia Subsystems“. In NETWORKING 2002: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications, 924–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-47906-6_75.

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Yoon, Seokung, Hyuncheol Jung und Kyung-Seok Lee. „A Study on the Interworking for SIP-Based Secure VoIP Communication with Security Protocols in the Heterogeneous Network“. In Security Technology, 165–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-10847-1_21.

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Martínez Perea, Rogelio. „SIP Protocol Operation“. In Internet Multimedia Communications Using SIP, 73–112. Elsevier, 2008. http://dx.doi.org/10.1016/b978-0-12-374300-8.00006-0.

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Martínez Perea, Rogelio. „SIP Protocol Structure“. In Internet Multimedia Communications Using SIP, 113–36. Elsevier, 2008. http://dx.doi.org/10.1016/b978-0-12-374300-8.00007-2.

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„SIP: Session Initiation Protocol“. In IP Communications and Services for NGN, 211–26. Auerbach Publications, 2009. http://dx.doi.org/10.1201/9781420070910-13.

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Basicevic, Ilija, und Miroslav Popovic. „Session Initiation Protocol“. In Encyclopedia of Internet Technologies and Applications, 532–38. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59140-993-9.ch075.

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With the appearance of the Internet as an important communications medium for widespread everyday use, which can be dated to the mid 90s, a need to establish a signalization protocol for multimedia communications was recognized. There were two major proposals: SIP by the Internet community, and H.323 by ITU-T.

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Konferenzberichte zum Thema "SPI communication protocol"

Trivedi, Dvijen, Aniruddha Khade, Kashish Jain und Ruchira Jadhav. „SPI to I2C Protocol Conversion Using Verilog“. In 2018 Fourth International Conference on Computing Communication Control and Automation (ICCUBEA). IEEE, 2018. http://dx.doi.org/10.1109/iccubea.2018.8697415.

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Pahlevi, Rizka Reza, Aji Gautama Putrada S. und Maman Abdurohman. „Fast UART and SPI Protocol for Scalable IoT Platform“. In 2018 6th International Conference on Information and Communication Technology (ICoICT). IEEE, 2018. http://dx.doi.org/10.1109/icoict.2018.8528745.

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Koushik, M., R. Anushree, B. J. Sowmya und N. Geethanjali. „Design of SPI Protocol with DO-254 Compliance for Low Power Applications“. In 2017 International Conference on Recent Advances in Electronics and Communication Technology (ICRAECT). IEEE, 2017. http://dx.doi.org/10.1109/icraect.2017.45.

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Jose, Bitty, und J. Samson Immanuel. „Design of BIST(Built-In-Self-Test)Embedded Master-Slave communication using SPI Protocol“. In 2021 3rd International Conference on Signal Processing and Communication (ICPSC). IEEE, 2021. http://dx.doi.org/10.1109/icspc51351.2021.9451702.

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Saha, Shumit, Md Ashikur Rahman und Amit Thakur. „Design and implementation of SPI bus protocol with Built-in-self-test capability over FPGA“. In 2014 International Conference on Electrical Engineering and Information Communication Technology (ICEEICT). IEEE, 2014. http://dx.doi.org/10.1109/iceeict.2014.6919076.

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Berger, Andreas, und Mohamed Hefeeda. „Exploiting SIP for botnet communication“. In 2009 5th IEEE Workshop on Secure Network Protocols (NPSec). IEEE, 2009. http://dx.doi.org/10.1109/npsec.2009.5342244.

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El Sawda, Samer, Pascal Urien und Rami El Sawda. „A trust communication with SIP protocol“. In 2010 IEEE/ACS International Conference on Computer Systems and Applications (AICCSA). IEEE, 2010. http://dx.doi.org/10.1109/aiccsa.2010.5587028.

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Khan, Muhammad Farhan, und Muhammad Imran Khan. „Next generation protocol for P2P SIP communication“. In 2011 IEEE International Conference on Computer Applications and Industrial Electronics (ICCAIE). IEEE, 2011. http://dx.doi.org/10.1109/iccaie.2011.6162214.

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El Sawda, Samer, Rami El Sawda, Pascal Urien und Ibrahim Hajjeh. „Non Repudiation for SIP Protocol; SIP Sign“. In Communication Technologies: from Theory to Applications (ICTTA). IEEE, 2008. http://dx.doi.org/10.1109/ictta.2008.4530177.

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Atluru, Sri, und Amit Deshpande. „Statistical Process Monitoring With MTConnect“. In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7344.

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Statistical Process Control (SPC) techniques are used widely in the manufacturing industry. However, it is sometimes observed that a deviation that is within the acceptable range of inherent process variation does not necessarily conform to specifications. This is especially true in the case of low volume; high precision manufacturing that is customary in aerospace and defense industries. In order to study the limitations posed by conventional SPC techniques in such manufacturing environments, a study was undertaken at TechSolve Inc., Cincinnati to develop a standalone SPC tool. The SPC tool so developed effectively communicates with an on-machine probe and analyzes the collected data to carry out a statistical analysis. MTConnect, a new-generation machine tool communications protocol, was used in developing the communication interfaces with the on-machine probe on a Computer Numerical Control (CNC) machine. The XML (eXtensible Markup Language) code used to extend the MTConnect schema to include the data obtained from the probing routines is also presented. The statistical analysis was developed as a Graphical User Interface (GUI) in LabVIEW. The statistical analysis was carried out as a case study by producing a widget. Real machining was carried out to produce 48 of these widgets using a combination of end mills and face mills. The data obtained during the subsequent quality testing was used to carry out the statistical analysis. The limitations of conventional SPC techniques during the developmental and analytical phases of the study are discussed. The presence of a chip during an on machine probing routine, the variations due to disparities in tool macro geometry, and the demand for conformance to requirements are studied in the view of a statistical process monitoring standpoint. Various alternatives are also discussed that aim to correct and improve the quality of machined parts in these scenarios.

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Berichte der Organisationen zum Thema "SPI communication protocol"

Schulzrinne, H., und J. Polk. Communications Resource Priority for the Session Initiation Protocol (SIP). RFC Editor, Februar 2006. http://dx.doi.org/10.17487/rfc4412.

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Rosenberg, J. Identification of Communications Services in the Session Initiation Protocol (SIP). RFC Editor, Juni 2010. http://dx.doi.org/10.17487/rfc5897.

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Rosenberg, J., und D. Willis. Requirements for Consent-Based Communications in the Session Initiation Protocol (SIP). Herausgegeben von G. Camarillo. RFC Editor, April 2006. http://dx.doi.org/10.17487/rfc4453.

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Rosenberg, J., und D. Willis. A Framework for Consent-Based Communications in the Session Initiation Protocol (SIP). Herausgegeben von G. Camarillo. RFC Editor, Oktober 2008. http://dx.doi.org/10.17487/rfc5360.

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Yang, Xinwei, Huan Tu und Xiali Xue. The improvement of the Lower Limb exoskeletons on the gait of patients with spinal cord injury: A protocol for systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, August 2021. http://dx.doi.org/10.37766/inplasy2021.8.0095.

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Review question / Objective: The purpose of this systematic review and meta-analysis was to determine the efficacy of lower extremity exoskeletons in improving gait function in patients with spinal cord injury, compared with placebo or other treatments. Condition being studied: Spinal Cord Injury (SCI) is a severely disabling disease. In the process of SCI rehabilitation treatment, improving patients' walking ability, improving their self-care ability, and enhancing patients' self-esteem is an important aspect of their return to society, which can also reduce the cost of patients, so the rehabilitation of lower limbs is very important. The lower extremity exoskeleton robot is a bionic robot designed according to the principles of robotics, mechanism, bionics, control theory, communication technology, and information processing technology, which can be worn on the lower extremity of the human body and complete specific tasks under the user's control. The purpose of this study was to evaluate the effect of the lower extremity exoskeleton on the improvement of gait function in patients with spinal cord injury.

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