Food Engineering logo
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • TOPICS
  • EXCLUSIVES
  • MEDIA
  • FOOD MASTER
  • EVENTS
  • RESOURCES
  • EMAGAZINE
  • SIGN UP!
cart
facebook twitter linkedin youtube
  • NEWS
  • Latest Headlines
  • Manufacturing News
  • People & Industry News
  • Plant Openings
  • Recalls
  • Regulatory Watch
  • Supplier News
  • PRODUCTS
  • New Plant Products
  • New Retail Products
  • TOPICS
  • Alternative Protein
  • Automation
  • Cannabis
  • Cleaning | Sanitation
  • Fabulous Food Plants
  • Food Safety
  • Maintenance Strategies
  • OEE
  • Packaging
  • Sustainability
  • More
  • EXCLUSIVES
  • Plant Construction Survey
  • Plant of the Year
  • Sustainable Plant of the Year
  • State of Food Manufacturing
  • Top 100 Food & Beverage Companies
  • MEDIA
  • Podcasts
  • Videos
  • Webinars
  • White Papers
  • EVENTS
  • Food Automation & Manufacturing Symposium and Expo
  • Industry Events
  • RESOURCES
  • eNewsletter
  • Custom Content & Marketing Services
  • FE Store
  • Government Links
  • Industry Associations
  • Market Research
  • Classified Ads
  • EMAGAZINE
  • eMagazine
  • Archive Issue
  • Advertise
Food Engineering logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Food Engineering logo
  • NEWS
    • Latest Headlines
    • Manufacturing News
    • People & Industry News
    • Plant Openings
    • Recalls
    • Regulatory Watch
    • Supplier News
  • PRODUCTS
    • New Plant Products
    • New Retail Products
  • TOPICS
    • Alternative Protein
    • Automation
    • Cannabis
    • Cleaning | Sanitation
    • Fabulous Food Plants
    • Food Safety
    • Maintenance Strategies
    • OEE
    • Packaging
    • Sustainability
    • More
  • EXCLUSIVES
    • Plant Construction Survey
    • Plant of the Year
    • Sustainable Plant of the Year
    • State of Food Manufacturing
    • Top 100 Food & Beverage Companies
  • MEDIA
    • Podcasts
    • Videos
    • Webinars
    • White Papers
  • FOOD MASTER
  • EVENTS
    • Food Automation & Manufacturing Symposium and Expo
    • Industry Events
  • RESOURCES
    • eNewsletter
    • Custom Content & Marketing Services
    • FE Store
    • Government Links
    • Industry Associations
    • Market Research
    • Classified Ads
  • EMAGAZINE
    • eMagazine
    • Archive Issue
    • Advertise
  • SIGN UP!

Double E as entrepreneur

September 1, 2009
An electrical engineer leaves corporate R&D behind to deliver a changeover tool that he says will save time, slash waste, and bring new precision to the process.

Dragan Filipovic, president and founder, MID-Manufacturing Improvement Devices, Arlington Heights, IL.


Julian Filipovic adjusts a machine setting based on an LED readout from a position sensor. The sensor beams a digital signal to a base unit, which records the setting for up to 250 machine positions. 

Packaging machine changeover not only is a production disruption, it is a drag on profitability. An intensive three-month study of the costs in lost production time, personnel training and product waste at a major food company conservatively put the price at $18 million annually, and most likely much higher.

Food and beverage professionals understand the problem, but bringing precision and repeatability to machine changeover is a challenge that increases exponentially as more lines and facilities are added to the mix. For the last 16 years, Dragan Filipovic’s work in US industry-first on the machine-control side and then in manufacturing-opened his eyes to the need for, and challenges in, delivering precise changeovers. Working independently for the last year, Filipovic developed an advanced sensing device he calls COT, shorthand for changeover tool. Consisting of a sensor and a controller plus customized software, COT guides mechanics in replicating the ideal settings in a machine changeover. Commercial deployment began in July.

An electrical engineer and native of what is now Serbia, Filipovic has conducted research in electro-optics, laser tomography, RFID and other technologies. MSEE and BSEE degrees preceded a Ph.D. in physics in a collaborative program between University of Belgrade, Yugoslavia, and Uppsala University in Sweden. He served as principal control engineer at an Elk Grove Village, IL, packaging machine manufacturer in the 1990s before joining Kraft Foods Inc. as associate principal scientist. His duties included systems development to support lean manufacturing with technological tools to improve overall equipment effectiveness. He left Kraft in June 2008 to form MID-Manufacturing Improvement Devices. COT is the firm’s first product.

FE: How does the changeover tool (COT) work?

Filipovic: There are two elements: the sensor and the base, and they work independently of each other. The sensor has two microprocessors and a multi-turn potentiometer with a spiral-spring wire. One microprocessor calculates distance to sub-millimeter accuracy and communicates wirelessly with the base. The second sensor manages the battery. Nonmagnetic brackets and pegs are affixed to the packaging machine at each point where a position setting needs to be made. The mechanic or operator places the sensor on a position bracket and pulls the retractable wire to the related peg. LED lights on the sensor’s case guide the mechanic in adjusting the machine to the precise set point. The setting then is relayed via ZigBee wireless protocol and recorded by the controller. It’s like GPS: the transmission can’t be disrupted or altered by another device, the unit only transmits. The mechanic then moves the sensor to the next bracket and repeats the process.

The base station houses the controller and can be up to 100 meters away. It consists of a hard case containing a solid-state netbook with an eight-hour battery and a bracket and post to calibrate the sensor at the start of each changeover.

I looked at laser, ultrasonic and Parallax for position sensing, but laser would consume 20 times more power, and there were repeatability and accuracy issues with the other technologies. A multi-turn potentiometer can experience small changes in length and is not ideal, but the issue is addressed by recalibrating, a process that takes five seconds.

Up to 250 machine set points are stored on the laptop in a recipe program for each product that will run on the packaging machine. As the mechanic dials in the settings from point to point, the laptop records them on an SD card for time-and-date stamping on an Excel spreadsheet. If a location is skipped or is not properly set, the program will not confirm that the machine is ready to run. However, COT is strictly diagnostic. It is there to inform the operator without disrupting machine controls. I will never connect a wire or touch machine code; this is completely separate and supplemental. 

FE: Why didn’t you bundle everything into a device the mechanic could carry to the machine?

Filipovic: Originally I was going to put all the electronics at the point of use, but in numerous in-depth interviews, mechanics all said they needed to have their hands free. Everything they needed had to be in the sensor box, with the controller in a passive role. They also told me, “Give me green/red lights to guide me.”

FE: How did you settle on 250 set points?

Filipovic: It has to do with using the first eight bits of the digital signal from the sensor. On big packaging machines, 30-40 changeover locations are not uncommon, and it’s easy to miss one. The netbook screen displays green and red squares to guide the user to the locations where adjustments remain to be made. Multiple machines can be set up with one COT.

FE: Did you collaborate with other firms on development?

Filipovic: I systematically tested all the options for distance sensors, and the best I could get was a unit from Micro-Epsilon, a German technology company. They supply pentiometers that help position X-ray imaging tables. COT is recoiled much more frequently, and they are supplying me with a modified return-tension mechanism hardened for industrial use. I’m using off-the-shelf components wherever possible so that replacement parts will never go dry. The netbook’s board and other components are solid state. You can drop them, no problem.

I delegated development of the battery management system to Revtel, an electronics firm in Lake Zurich, IL. Battery management is critical. The battery automatically shuts down after two minutes if no adjustments are made. Everything is in the computer, so you resume where you left off. I backed their system with a redundant power shut-off in the controller. The lithium battery in the sensor should last 1-2 years.

Another collaborator is my 15-year-old son, Julian. He set up my Web site at www.oeeincrease.com. He did the design in his room, while I focused on the software in another room. Programming is tedious, with trial and error and tweaking to resolve minor glitches, but that is what I do. The idea is to spare the end-user by keeping the complexity deeply hidden in electronics. Complexity is not the goal; all the operator needs to see is red or green, good or not good.

FE: Contrast development working independently with development in a corporate environment.

Filipovic: Project prioritization rules the corporate environment, and engineering development is a stepchild. If you are planting in infertile soil, your project is doomed.

My colleagues at Kraft could see the conceptual potential of a changeover tool, but the execution process is so long, with many managerial levels to satisfy. The original idea gets diluted, and being stopped and reviewed many times undercuts personal drive.

Working independently, I’m motivated to use resources effectively to get a final product as quickly as possible. Innovation is knowledge and execution.

FE: Do you anticipate resistance to COT on the shop floor?

Filipovic: Mechanics introduce variance by insisting they know how to set a machine better than anyone else. That creates changeover problems. COT has a learning mode where the OEM’s best mechanic sets the machine perfectly, and all the settings are stored automatically. If a mechanic believes he can set the machine better, his settings can be tried and date-stamped in the system. If throughput or some other metric shows improvement, the learning mode is used again to set the new standard.  

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Recommended Content

JOIN TODAY
to unlock your recommendations.

Already have an account? Sign In

  • Global Organic Food & Beverage Market to Grow

    Global Organic Food & Beverage Market to Grow

    With a CAGR of 12.07%, Bonafide Research estimates this...
    People & Industry News
  • skilled MEP worker

    Predicting Food and Beverage Manufacturing Trends for 2024

    The two words that should be kept in mind are labor and...
    Automation
    By: Derrick Teal
  • cleaning and sanitation

    The basics of cleaning and sanitation in food plants

    Sanitation maintains or restores a state of cleanliness...
    Cleaning | Sanitation
    By: Richard F. Stier
Subscribe For Free!
  • eMagazine
  • eNewsletter
  • Online Registration
  • Manage My Preferences
  • Customer Service

Food Plant Openings and Expansions May 2025

Food Plant Openings and Expansions May 2025

OT Cybersecurity Vulnerabilities in Food Manufacturing Facilities

OT Cybersecurity Vulnerabilities in Food Manufacturing Facilities

Understanding Impacts of OT Cybersecurity Events in Food Manufacturing

Understanding Impacts of OT Cybersecurity Events in Food Manufacturing

Food Plant Openings and Expansions April 2025

Food Plant Openings and Expansions April 2025

More Videos

Popular Stories

Vilter IHP in plant

Industrial Heat Pumps: Sustainable Energy Solutions for Now and the Future

FMTE Formed by Four Food Manufacturing Companies

Coalition Unites Europe’s Food Manufacturing Technologies and Equipment Sector

Sanitation worker spraying water

Fighting the Foodborne Bacteria War with Cleaning and Sanitation

CHECK OUT OUR NEW ESSENTIAL TOPICS

Alternative ProteinAutomationCleaning/SanitationFabulous Food Plants

Food SafetyMaintenance StrategiesOEE

PackagingSustainability

Events

June 17, 2025

Refrigerated & Frozen Foods’ State of the Cold Chain

Kelley Rodriguez, Editor in Chief of Refrigerated & Frozen Foods, will be joined in this 60-minute webinar by industry experts to help unpack the latest research.

January 1, 2030

Webinar Sponsorship Information

For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com.

View All Submit An Event

Products

Recent Advances in Ready-to-Eat Food Technology

Recent Advances in Ready-to-Eat Food Technology

See More Products

Plant of the Year

Related Articles

  • Food Packaging: Baking trays double as display packaging

    See More
  • Purge pads double as anti-theft devices

    See More
  • Food Packaging: Packaging as convenient as the product

    See More
×

Elevate your expertise in food engineering with unparalleled insights and connections.

Get the latest industry updates tailored your way.

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Food Master
    • Store
    • Want More
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletter
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

Food Engineering logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Food Engineering logo
  • NEWS
    • Latest Headlines
    • Manufacturing News
    • People & Industry News
    • Plant Openings
    • Recalls
    • Regulatory Watch
    • Supplier News
  • PRODUCTS
    • New Plant Products
    • New Retail Products
  • TOPICS
    • Alternative Protein
    • Automation
    • Cannabis
    • Cleaning | Sanitation
    • Fabulous Food Plants
    • Food Safety
    • Maintenance Strategies
    • OEE
    • Packaging
    • Sustainability
    • More
  • EXCLUSIVES
    • Plant Construction Survey
    • Plant of the Year
    • Sustainable Plant of the Year
    • State of Food Manufacturing
    • Top 100 Food & Beverage Companies
  • MEDIA
    • Podcasts
    • Videos
    • Webinars
    • White Papers
  • FOOD MASTER
  • EVENTS
    • Food Automation & Manufacturing Symposium and Expo
    • Industry Events
  • RESOURCES
    • eNewsletter
    • Custom Content & Marketing Services
    • FE Store
    • Government Links
    • Industry Associations
    • Market Research
    • Classified Ads
  • EMAGAZINE
    • eMagazine
    • Archive Issue
    • Advertise
  • SIGN UP!