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Desarrollo de un sistema de comunicaciones inalámbrico para conexión de dispositivos vía USB

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2018
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2018-10-08
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The present work is a proof of concept that demonstrates the possibility of designing and implementing a basic communications system from the ground floor, applying the knowledge acquired in the University. This system converts a link, created between an USB device and a computer when they are connected, from wired to radio. It consists of two transceivers, called “local transceiver” and “remote transceiver”. The first one will be connected to one of the free USB ports of the computer and the second one will act as an interface for the USB device to be used. The USB technology was born in the mid-90s thanks to IBM, Intel, Microsoft, Northern Telecom, NEC and Apple due to the need of simplify the interface between the peripheral devices and the computer. The first USB standard has appeared in 1996 and it was called USB 1.0. It standardized the so-called human interface devices (HID) such as keyboards, mouse, ISDN phones, web cameras, etc. and its data flows were relatively small: 1.5 Mbps (low-speed) and 12 Mbps (full-speed). The USB 1.0 is the first functional version of the USB protocol and it did not allow the use of the non-HID peripherals, while all the subsequent revisions of the protocol have extended the usability of the USB architecture to most of the devices that are currently known. The second standard was the USB 1.1 and its main objective was to solve the ambiguity problems of the previous version. It dates from 1998. The third version of the standard was born in 2000 using the name of USB 2.0. Its maximum theoretical data rate is 480 Mbps and this new mode of operation is called high-speed. The USB 2.0 allows the connection of the storage and video devices. The next innovation of the USB architecture was the so-called USB on-the-go, which has appeared in 2001. Thanks to it, the USB devices can communicate with another USB device without any computer. By this way, peripherals such as digital cameras and mobile phones or USB memories and printers can be interconnected. The data rate is the maximum speed of the slowest device of all the interconnected ones. The most recent versions of the standard are the 3.0 and the 3.1. The USB 3.0 was released in 2008 and the USB 3.1 was released in 2013. The maximum theoretical data rates of those two standards are 5 Gbps and 10 Gbps, respectively. Another of the great achievements of the USB protocol is the Wireless USB, the purpose of which is to further increase the connectivity that this architecture already offers. The latest version of the Wireless USB is the 1.1, released in 2010. The maximum transfer rate depends on the distance between the transmitter and the receiver. The USB technology is backwards compatible. That means that any device can work with an earlier version of the standard. The maximum data rate will be the available...
El presente trabajo va a abordar el diseño, la construcción y la verificación del funcionamiento de un sistema de comunicaciones básico vía radio para la interconexión de periféricos a un ordenador por medio del interfaz USB. Dicho sistema estará compuesto por dos equipos transceptores, que se llamarán en adelante transceptor local y transceptor remoto. El primero se conectará a uno de los puertos USB del ordenador, mientras que el segundo cumplirá el papel de interfaz de conexión para un determinado periférico USB.
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Protocolos de comunicación, Tecnología BUS, Transferencia de datos, Transferencia de datos
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