SUPPLEMEN
SUPPLEMENT FEAT RE MACH N FEA ATURE
CHINEI E VISIONISION SYSTE
YSTEM S
USB 3. - t e next gener stan
me w b
and accepted by bot chin
sio , th to U
SB 3.0 cameras can capitalise on the performance of the latest fast
sensors, and the emergence of the USB3 vision standard means that compatible cameras can be interchanged in the same way as has been possible for GigE Vision cameras for many years. Bearing this in mind, a number of recent surveys have suggested that USB 3.0 will be the most popular camera type in two years time .
USB TANDARD MOVES FORWARD Things rarely stand still in modern
USB STA ANDARD MOVES FORWARD
technology and by July 2013, the USB 3.1 standard was finalised by the USB Implementers Forum. Just as USB 3.0 opened up major new opportunities for the machine vision market, USB 3.1 also offers great benefits for machine vision. The key benefits that for the vision market offered by USB 3.1 are: • Greater power transfer
• The use of a new connector • The opportunity for greate r
bandwidth with USB 3.1 Gen 2 (10 Gbps). It is worth clarifying that there are two
USB 3.1 specification tech versions of the USB 3.1 st
nically replaces andard. The
the USB 3.0 specification while
maintaining full backwards compatibility with USB 3.0 and 2.0.
However, it now allows for either the current 5Gbps (USB 3.1 Gen 1) or a new 10 Gbps (USB 3.1 Gen 2) mode. USB 3.1 Gen 1 is still officially known as ‘Super- Speed USB’ and is compl etely
synonymous with USB 3.0. USB 3.1 Gen 2, however, is officially known as
‘SuperSpeed USB 10 Gbps’. This has a data transfer rate twice that of USB 3.0. and the effective data payload will be even higher due to further efficiency improvements on protocol level.
S1 S14 MAR MARCH 201 2017 | MACH MACHINE VISI VISION SYSTEMS EMS
USB TyB Type-C single and dual screw locking plugslugs (Alysium-T-Tech GmbH,,
dual screw locking p (Alysium-Tech GmbH 2016)2016)
Type-C single and e
uEye LE USB 3.1 Gen 1 cameras
uEye LE U B 3.1 Gen 1 housed and board-housed and board-levelleve l cameras
USB 3 1 AND M CHINE VISION USB 3.1 offers a number of benefits for machine vision. The new USB connector that is used is sma versatile and allows higher power transfer. Not only that, it is reversible! Supplyingmore power to the camera using the Type-C connector will make systemdesignmuch easier as it can eliminate the need for a power supply in many compact systems. Cameras which combine all these benefits are already available. IDS has introduced a lineup of cameras that will supply 12 W through the camera, as long as enough current is provided fromthe host, and evenmore for upcomingmodels. This will be enough power, for example, to drive illumination in the device and will helpmake system set-up less complicated and less
B 3.1 A. D MACHINE VISION
ll, fast, very Type-C
,
expensive. USB 3.1 Gen 1 and Gen 2 are also fully USB 3 Vision compatible. The doubling of the data transfer rate to SuperSpeed 10 Gbps using USB 3.1 Gen 2 and the data payload of almost 1GByte/s will not only allow very fast sensors to be used, but also data output in RGB formats and bit depths of more than eight bits per channel become possible. When choosing whi chmachine vision camera interface to use, users will take into account not only that data transfer rate, but the distance over which that data transfer can be achieved, so cabling is an important consideration. In fact the specification explicitly states that
USB 3.1 - the next generation standard camera interface
o n rd cam ra interfac e
USB 3.0 cameras have now become widely adopted and accepted by both manufacturers and users of machine vision, thanks to good data transfer speeds of more than 400MB/s and a cheap set-up thout the need for a frame grabber
me wi
anufacturers and users of ta tra sfe
speeds of m re than 400MB/s and a c heap set-u p without the need for a frame grabber
it does not specify cable length. With USB 3.1 and USB Type-C, IDS currently sees cables with 3mlength, but expects longer cables to become available soon. With USB 3.1 Gen 2, it will bemore challenging for cablemanufacturers to ensure that all the parameters aremet for long cables. Possibly there will be shorter cables with 1 or 2minitially for 10 Gbps data rates. The new USB Type-C also allows the implementation of longer cables or fiber optic cables (up to 100m) using active EMCAs with additional electronics to provide signal conditioning by adding a re- driver on the data path. USB Type-C cables are available with lockable connectors (Figure 1) and even hi flex drag chain versions for small scale robotics to cover a host of industrial ap plications .
USB 3 1 CAMERAS N PR B 3.1 C. AMERAS I IN PRACTIICE CE
USB SuperSpeed cameras are used in a large number of applications already and continue to win an increasing share of new machine vision design-ins. Users that need high performance cameras should consider USB 3.1 products before turning to bulky, power-hungry and comparably expensive solutions with high speed interfaces and frame grabbers. IDS has introduced several newmodels such as the uEye LE USB 3.1 Gen 1 housed and board- level cameras (Figure 2) featuring the new Type C connector, and hardware support for 12Wpower delivery. These cameras are available with a choice of four sensors offering resolution from0.5 to 6MPixels. When considering USB 3.1 Gen 1 cameras, switching to an USB Type-Cmodel now will offer an absolutely seamless transition to twice the data rate in a couple of years time. USB 3.1 offers somany possibilities for connecting almost any kind of device become the single erface.
ubiquitous digital int that it is expected to
IDS Imaging Development Systems T: 0118 9
T: 0118 970 170 1704
www.ids-imaging.com ww
ids-imaging.com /AUTOMATION AT /AUTOMATION
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