gigabit Ethernet for machine vision (GigE Vision)
The term"Gigabit Ethernet for Machine Vision" (GigE Vision) refers to an interface standard for industrial image processing based on Gigabit Ethernet1000Base-T. GigE Vision is a further approach to an interface between industrial camera and personal computer( PC), in addition to the well-known camera interfaces such as IEEE 1394, FireWire, USB3 Vision and CameraLink( CL) or the high-speed technologies Gigabit Ethernet and 10 Gigabit Ethernet.
GigE Vision is a standard for connectingindustrial cameras to the Gigabit Ethernet cabling structure and uses the IP protocol as the transmission protocol through which GigE products can communicate with a computer. Furthermore, GenICam, to which the GigE standard refers, provides a generally valid software interface with which the devices can communicate their functions to generic software. The description language used for this is Extensible Markup Language(XML). The GigE Vision standard defines the automatic registration of the components in the network, the assignment of IP addresses, the configuration and control of the digital camera and the connection-oriented data transferusing the GigE Vision Control Protocol( GVCP).
GigE Vision works without a frame grabber and has the advantage that the hardware is interchangeable. As a result, image processing can use inexpensive camera components, as well as the familiar cabling components of Gigabit Ethernet. With the data rate of Gigabit Ethernet, a data throughput of over 100 MB/s can be achieved. Since Gigabit Ethernet is an IEEE standard, several industrial cameras from different manufacturers can be used for streaming and for industrial image processing. The bridgeable distance is 100 m, which is difficult or impossible to realize with other interface technologies via TP cables.
In addition to the standard version, there are also 2.5GigE Vision with a data throughput of 250 MB/s, 5GigE Vision with 500 MB/s and 10GigE Vision with 1,100 MB/s as successor technologies. 10GigE Vision is based on 10GBase-T and supports a throughput of up to 1,000 MB/s over 100 m.