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Documents Autres La dynamique d’internet Prospective 2030 Charles Nepote Fing Michael Baker Télécom Paristech-Cnrs Valérie Beaudouin Télécom Paristech, Gérard Pogorel Télécom Paristech Patrick Waelbroeck Télécom Paristech Antonio Casilli Télécom Paristech Françoise Detienne Télécom Paristech-Cnrs Laurent Gille Télécom Paristech Daniel Kaplan Fing Daniel Kofman Télécom Paristech Jacques-François Marchandise Fing Françoise Massit-Follea Vox Internet, Pierre-Jean Benghozi École Polytechnique Amandine Brugiere Fing Jacques-François Marchandise Fondation Internet Nouvelle Génération (Fing)
Documents Rapports de stage Convergence of Smart Objects in industrial wireless sensor network Smart Object Security Workshop Kazunori Miyazawa Yokogawa Electric Corporation Kazunori yokogawa com Introduction Process Automation Control System PACS requires high reliability because it processes hazerdous materials which are often explosive and toxic PACS has been mainly using 20mA analog communication overlaying on power supply because of its high reliablity This analog communication needs one line to transmit to single value and it is uni directional Brand new PACS introduces field bus network for communication between control systems and sensors It is bi directional digital communication and achieves to share a communication line with some devices So far PACS mainly uses wired communication but demand for wireless communication increases due to the cost merit The purpose of wireless communication is mainly monitoring at this moment Some users expect to extends it to more critical purpose such asI Os of control loops Control cycle depends on target processes or materials and every PACS needs realtimeness The control cycle is Hz in general and sometimes more faster Hz As mentioned above PACS processes hazardous materials which are sometimes explosive Hence field devices such as sensors and actuators must be intrinsically safe and low power consumption capacitance and inductance are seriously restricted Network for PACS usually equips redundancy due to the high reliability requirements Huge plant has tens of thousands of I O points and over a ten thousands field devices So that field devices and their engineering are cost sensitive If once a plant starting up and becoming production phase after construction the equipments are hardly changed and they are used years or years long The system is very static and it has long life cycle Construction and engineering of PACS are executed in parallel to shorten the time to build a plant In a user site the construction is carried out according to physical design The devices are directly delivered ... Kazunori Miyazawa
Documents Rapports de stage INTRODUCTION This technical brief describes the creation of a USB device that can enumerate as a mouse or as a keyboard depending on which PS peripheral is plugged into it The Soft Detach provision of the PIC16C745 support firmware makes the creation of such a device possible Two earlier Briefs TB055 and TB056 describe in detail the implementation of a PS to USB mouse translator and a PS to USB key board translator respectively This brief will not discuss the translation of either of these devices Rather it focuses on the Soft Detach function and on modifying the descriptor jump table for a device with multiple sets of descriptors Microchip Technology Inc.