Benefits of the Universal Serial Bus (USB) for Data Acquisition
Imagine the possibilities the acquisition to add data to your computer as easily as you connect, high speed data acquisition, your mouse or keyboard. Just connect the compact data collection module to the computer (you can also close), you must install the software and the sensor is connected directly to the module. Within a few minutes, and repeat accuracy is to acquire data: temperature, pressure, noise, what you need. And he has done without the software without opening your computer, even thinking about the IRQ settings, motherboard, power supply, or a combination of schemes.
A illusion? Not anymore. This comfort and efficacy are available today, thanks to USB Serial Bus development and a growing number of modules, USB data in public office. Overall, modules and USB bus to a large extent forms to simplify the data PCs.USB: universal truth PeripheralsToday PC Bus, high speed data acquisition, almost all desktops and laptops on the market offer USB ports. USB-port PCI-current machines can be easily added. Equally important, these USB ports are fully software support for popular operating system for personal computers and Microsoft Windows 2000 and USB standard XP.
The created a group of producers (such as Intel, Microsoft and Compaq) to simplify connecting external peripherals, personal computers. USB docking site (http://www.usb.org) has detailed knowledge of the properties USB.Are one or two USB ports enough? Possibility of extension is another strong point of USB. Up to 127 devices can be connected to one port simultaneously, using expansion hubs and cable reels, which are widely available at affordable cost.USB first ImprovementsThe USB 2.0, version 1.
1, which was sent to 12 Mbps (megabits per second) data transfer, which is a good or moderate-speed applications, such as most used for data acquisition, but not fast enough to support video, photos, and data applications quickly, high speed data acquisition, . This technical limitation has been a new version of the USB specification. In April 2000, USB 2.0 Promoter, high speed data acquisition, Group has released the final USB 2.0. 2.0 USB version of the previous win barrier at a speed 40 times capacity of 480 Mb / s will change, as the largest packet, high speed data acquisition, size, and more quickly move more efficiently.
As a high performance USB devices become more common, 2.0 is the more bandwidth you can connect multiple USB peripherals, software, multi-tasking activities, without slowing down. USB 2.0 (Hi-Speed device), is quite compatible with USB 1.1 (USB original), and uses the same wires connectors.Easy ease of installation is important to the creation of USB, some of the features that are designed to USB devices among the easiest to install. Firstly, the USB devices that are the real "plug-and-Play.
There is no line options address, IRQ jumpers, or configuration. The host team will automatically detect when it is connected to peripherals, and to find the necessary software to use it. For the first time using the device the user must install drivers and applications, a process that takes only a few minutes. Easy installation of the USB peripherals can be divided computers, laptops and even desktop models.USB also an external device to your computer - without having to open their computers to be installed.
This is an external location also provides performance gains are sensitive to noise, peripherals and data: These are far from the hustle and bustle of the computer's motherboard and the power and sensors closer to the USB devices are mutually measuring.Hot intended to be installed or removed while the computer is running. peripherals do not need to download the workspace, they are not. Connect the device, use it, and then remove it when done.Peripherals can be powered by USB, or external power supply.
Connects to USB is more convenient, but limited, high speed data acquisition, power is available in a comprehensive system must be designed from the start is operation.USB USB devices can be connected directly to a USB port, which is located in PC-Hub can be powered independently or integrated computer monitors and peripherals.Connection PC is easy, too. One of the inexpensive cable (1-5 feet long, and often
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