Industrial Ethernet video: Protocol requirements, application

Industrial-grade Ethernet based video applications can be set up for real time viewing or be stored for later review, according to Peter Wood, GarrettCom vice president of engineering. He says some applications provide information about what is happening as recorded by on-site video cameras and sent to consoles for review – either to alert someone when a problem develops (and possibly provide for remote control) or to store and review later (perhaps for process improvement).<br/>

12/03/2007


Industrial-grade Ethernet based video applications can be set up for real time viewing or be stored for later review, according to Peter Wood, GarrettCom vice president of engineering. He says some applications provide information about what is happening as recorded by on-site video cameras and sent to consoles for review– either to alert someone when a problem develops (and possibly provide for remote control of the situation to effect a change – such as the Vermont Department of Transportation (VDOT) application of Ethernet video or some factory process monitoring ) or to store and review later (perhaps for process improvement).

What’s needed in the protocol: Typical Ethernet protocols are UDP (the classical Ethernet protocol for moving packets within an Ethernet network) and TCP/IP, which adds additional information to support IP stack (and further upstream) requirements. Because streaming video is a high-bandwidth application, limiting additional processing overhead is ideal in any way possible. UDP has less overhead than TCP/IP for local network transmissions (managed by an Ethernet switch). When a router is necessary for passing data beyond the local network, TCP/IP is the preferred choice.

To reduce bandwidth requirements when all video camera (or stored video) is not required at all video viewing sites, Internet Group Management Protocol (IGMP) and GarrettCom’s switch-level subset, IGMP-L2 can provide multicast support rather than bandwidth-wasting unicasting.

GarrettCom offers a short technical brief about multicasting support

.

Some applications may be supported by a switch-based network (star, ring, mesh or daisy-chain) while others may require a router.

As for the V-DOT application, it is simply an implementation opportunistic implementation of video over Ethernet Wood says; since the Ethernet capability was there, adding video provided major traffic performance incentives. In a manufacturing facility, he adds, the same opportunity to visually monitor some activities and take remote action when the situation warrants, can provide cost savings and increased efficiency.

Here's Control Engineering about industrial Ethernet video.

—Edited by Mark T. Hoske , editor in chief
Control Engineering System Integration eNewsletter
( Register here and scroll down to select your choice of eNewsletters free .)





No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
The true cost of lubrication: Three keys to consider when evaluating oils; Plant Engineering Lubrication Guide; 11 ways to protect bearing assets; Is lubrication part of your KPIs?
Contract maintenance: 5 ways to keep things humming while keeping an eye on costs; Pneumatic systems; Energy monitoring; The sixth 'S' is safety
Transport your data: Supply chain information critical to operational excellence; High-voltage faults; Portable cooling; Safety automation isn't automatic
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Maintaining low data center PUE; Using eco mode in UPS systems; Commissioning electrical and power systems; Exploring dc power distribution alternatives
Synchronizing industrial Ethernet networks; Selecting protocol conversion gateways; Integrating HMIs with PLCs and PACs
Why manufacturers need to see energy in a different light: Current approaches to energy management yield quick savings, but leave plant managers searching for ways of improving on those early gains.

Annual Salary Survey

Participate in the 2013 Salary Survey

In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.

Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.

2012 Salary Survey Analysis

2012 Salary Survey Results

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.