Featured Research

from universities, journals, and other organizations

Expert System To Address Problems Of Electromagnetic Interference

Date:
November 6, 1997
Source:
University Of Missouri-Rolla
Summary:
Electrical engineers at the University of Missouri-Rolla are working with several private companies to create a software program designed to catch and fix electromagnetic glitches during the design of printed circuit boards used in computers, automotive parts and a broad array of other electronic products.

ROLLA, Mo. — Electrical engineers at the University of Missouri-Rolla areworking with several private companies to create a software programdesigned to catch and fix electromagnetic glitches during the design ofprinted circuit boards used in computers, automotive parts and a broadarray of other electronic products.

The three-year project, now in its second year, will result in "expert"software products that will help electronics makers meet federal standardson electromagnetic emissions. The expert system should also save circuitboard makers a lot of time and money by allowing them to catch and fixproblems before the circuit boards are manufactured.

"Computer systems are getting faster and faster, and the faster they get,the more likely they are to act as tiny radios and emit signals," says Dr.Todd Hubing, an associate professor of electrical engineering at UMR. "Whatwe have to do is make them extremely inefficient radiators."

Hubing is one of four UMR electrical engineering researchers involved inthe UMR EMI Expert System Consortium. EMI stands for electromagneticinterference.

The UMR research team also includes one visiting scholar, 15 graduatestudents and five undergraduate students.

The consortium is a three-year project between UMR and nine diversebusinesses -- from equipment manufacturer Caterpillar to computer giantsIntel and Sun Microsystems. The consortium's goal is to develop software toeliminate electromagnetic interference problems during the design phase ofcomputer circuit boards. The project has more than $1 million in fundingfrom consortium members.

In the personal computer's early days, the circuit boards that ran the PCsoften would interfere with the music of an office radio. That's because thecircuit boards act as miniature radio stations and broadcast signals. Theresult is radio static.

This is one common example of how electronic noise can disrupt theoperation of everyday products, and this problem, for the most part, hasbeen taken care of by manufacturers of both PCs and radios. But newproblems of electromagnetic interference are likely to arise as portableelectronic products -- such as compact-disc players, laptop computers andhand-held computers -- become more commonplace. Signals from these gadgetscould potentially wreak havoc on the computer systems of airplanes,automobiles and other complex electronic systems.

At UMR, the researchers test a variety of products in its ElectromagneticCompatibility (EMC) Laboratory, analyze the results, and write thealgorithms that will be used to develop an expert software system that canbe used by any circuit board designer. The UMR researchers then hand offtheir algorithms to the consortium's software partners. Those partners, inturn, develop computer-assisted design software products to be used bycircuit board designers in the industry. All information is shared amongthe consortium's members, and all hardware companies in the consortiumreceive free evaluation copies of the early versions of the software.

When completed, these expert systems will diagnose circuit board designs,catch any potential problems, predict the extent of those problems, andrecommend ways for designers to fix them.

"Through this consortium, we're developing software that does the samething that an EMC engineer would do, looking at things the way a humanwould," Hubing says.

The need for an expert system is great because circuit board designersoften know little about EMI concerns, Hubing says. There are few EMIengineers in the world, but many circuit board designers, he adds.

"If you had a human EMC expert looking over the shoulder of circuit boarddesigners, then you wouldn't have a problem," Hubing says. "But circuitboard designers have a lot of other things to concern themselves withbesides EMI problems.

"As a circuit board designer, you've got thermal considerations, EMIconsiderations, cost trade-offs and manufacturing considerations to takeinto account-- plus you must keep up with the latest in digital technology," Hubingadds. "Circuit designers can't be experts in all of these areas, and sothey're having to rely on tools to catch certain things automatically."

Already, the UMR EMI Expert System Consortium has developed prototypesoftware that all partners in the consortium are evaluating.

Hubing and his colleagues in UMR's electrical engineering department --Drs. Tom Van Doren, James L. Drewniak and Richard E. DuBroff -- first gotthe idea for developing an expert system after working with Boeing on asimilar project. With Boeing, the UMR researchers developed software tolocate EMI "design rule violations" in circuit board designs. The expertsystem software now under development not only locates potential problems,but also analyzes them and proposes specific solutions.

Working with the four UMR professors is Dr. Sergiu Radu, a visitingprofessor from Romania.


Story Source:

The above story is based on materials provided by University Of Missouri-Rolla. Note: Materials may be edited for content and length.


Cite This Page:

University Of Missouri-Rolla. "Expert System To Address Problems Of Electromagnetic Interference." ScienceDaily. ScienceDaily, 6 November 1997. <www.sciencedaily.com/releases/1997/11/971106070740.htm>.
University Of Missouri-Rolla. (1997, November 6). Expert System To Address Problems Of Electromagnetic Interference. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/1997/11/971106070740.htm
University Of Missouri-Rolla. "Expert System To Address Problems Of Electromagnetic Interference." ScienceDaily. www.sciencedaily.com/releases/1997/11/971106070740.htm (accessed September 16, 2014).

Share This



More Matter & Energy News

Tuesday, September 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Manufacturer Prints 3-D Car In Record Time

Manufacturer Prints 3-D Car In Record Time

Newsy (Sep. 15, 2014) — Automobile manufacturer Local Motors created a drivable electric car using a 3-D printer. Printing the body only took 44 hours. Video provided by Newsy
Powered by NewsLook.com
Refurbished New York Subway Tunnel Unveiled After Sandy Damage

Refurbished New York Subway Tunnel Unveiled After Sandy Damage

Reuters - US Online Video (Sep. 15, 2014) — New York officials unveil subway tunnels that were refurbished after Superstorm Sandy. Nathan Frandino reports. Video provided by Reuters
Powered by NewsLook.com
Frustration As Drone Industry Outpaces Regulation In U.S.

Frustration As Drone Industry Outpaces Regulation In U.S.

Newsy (Sep. 14, 2014) — U.S. firms worry they’re falling behind in the marketplace as the FAA considers how to regulate commercial drones. Video provided by Newsy
Powered by NewsLook.com
Smart Gun Innovators Fear Backlash From Gun Rights Advocates

Smart Gun Innovators Fear Backlash From Gun Rights Advocates

Newsy (Sep. 14, 2014) — Winners of a contest for smart gun design are asking not to be named after others in the industry received threats for marketing similar products. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins