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Feature Article from Our Distribution and Materials Handling Subject Area - See All

From SCDigest's On-Target E-Magazine

- Sept. 25, 2012 -

 
Gilmore and Holste Tackle Audience Questions on Logistics Technology and Material Handling Systems Part 2


Gilmore on Voice, "Wearables," Labor Management; Holste on AGVs for Distribution

 

SCDigest Editorial Staff


Our on-line Distribution Management Expo 2012 event held earlier this year, SCDigest Editor Dan Gilmore and Materials Handling Editor Cliff Holste headlined an "Ask the Expert" session that took questions from attendees relative to distribution and materials handling automation topics.

Recently, we highlighted on these page a few of the questions and responses from that session. (See Gilmore and Holste Tackle Audience Questions on Logistics Technology and Material Handling Systems.)

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"The flexible pathing now is what is key," Holste said. "AGVs are going to become potentially important assets to the DC."
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This week, we wrap it up with Part 2.

One attendee asked Gilmore for his overall thoughts on voice technology in distribution.

"It's hard not to be pretty positive on voice," Gilmore said. "I think long term, for most picking applications, replenishment applications, maybe even areas like receiving, that there is an inherent benefit to having your hands free."

Gilmore said that some of the early voice systems in the 1990s were "a little dicey" in some cases and sometimes didn't work too well, but "the equipment and the voice recognition technology today is much better than it was even half a dozen years or so ago. Voice is out there in hundreds and hundreds of sites. I have seen many of them personally."


Gilmore then tied into Holste's earlier comments on sortation systems in distribution, noting that he and Holste had actually done a few sortation system projects together back in the 1990s - and how voice might solve a real challenge those systems face."

"You might go to a location in a wave and have to pick 80, 90 or more cases on to the belt," Gilmore said. "How do verify that you picked the right number of cases? You can scan every case, but that is really going to slow you down. Or you can rely on the picker counting right. Let's see if any of us can pick 87 cases and hit that number right on the head."

He said voice technology might provide a real solution to this operational dilemma, by enabling the pickers to "count off" as they are picking, so that the system knows exactly when they have reached the 87th case.

That said, Gilmore is also bullish on wearable RF devices too. These are small wireless units with a display and keyboard that are worn typically on the wrist or arm, and thus also provide a hands-free alternative. Plus they give users a bar code scan capability.

"The most recent versions of these wearables have improved a lot," Gilmore said. "Better displays, much more rugged, Bluetooth capabilities for the ring scanner. Going forward, I think you are really going to see wearables with voice capability as being a very powerful combination. It gives you the advantages of voice with some additional flexibility."

Gilmore added, "This is just where this is going."

Next, an attendee asked Holste what his thoughts were on using AGVs in distribution.

Holste said "It is really interesting how far AGVs have come," noting that there have been improvements in flexibility, and new applications such as having an AGV work in conjunction with a case picker.

"The fixed path type of AGVs that we've had in manufacturing for a long time simply didn't lend themselves well for the flexible needs of a distribution center, where things are changing all the time," Holste added. "But today, with the new
visual systems they have on-board, they can run in flexible paths, and are generating a lot of interest in distribution."


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He said this is especially true not only to assist case picking, but also as DCs take on more and more value-added services and even light assembly work, as the AGVs can be used to deliver product to work areas in the facility and then another AGV can take it where it's needed next.

"The flexible pathing now is what is key," Holste said. "AGVs are going to become potentially important assets to the DC."

Gilmore noted a video SCDigest had published showing one of these new-age AGVs in action, and a funny scene where a worker puts cases on a AGV-pallet, and then waits for the robot to move. It doesn't, and the worker starts getting frustrated, yelling at the machine. Finally, he walks away in disgust - and the AGV starts to move. The vision system told the AGV there was an obstacle and so it didn't start moving until the obstacle - the worker - left.

Holste also explained in a bit more detail how some of the newer AGVs might be used with case picking.
In this application, he said, an AGV "walks" along with the picker down a case pick lane. There are sort of two options: (1) the picker himself controls the AGV, moving it down the aisle with him or her, and putting cases on the AGV pallet as they are selected, advancing the robot to the next pick location with a handheld device.

(2) In a more advanced scenario, the AGV is integrated with the WMS, and moves to the next spot by itself, using a GPS-style navigation system.

After the picks are complete, the AGV moves the pallet by itself to shrink wrap, staging or wherever the goodsneed to go, while the picker is assigned another AGV and moves right back to picking mode without the need to take time to move the load.

This can have a big impact on productivity and generate high ROI, Holste said.

Finally, Gilmore took a question on the pros and cons of Labor Management Systems (LMS).
"I am a real proponent of Labor Management Systems, so it is going to be hard for me to come up with a con," Gilmore said. "The pros are very simple. First, they provide tremendous payback. And maybe just as important, consistent payback. The range of expectations versus actual results for LMS is going to be very narrow."

Gilmore also said LMS is a comparatively easy and "low pain" implementation, adding that LMS has among the lowest "pain to gain" rations of any logistics software project. He noted for example that even if an LMS project fails - and in the rare cases that happens today is never the fault of the software - it doesn't really impact core distribution center operations, meaning it is low risk.
Gilmore says an overlooked opportunity for LMS is in conjunction with automation.

"A challenge with a lot of automation projects is how the labor should really operate and how much is needed," Gilmore said. "With LMS, you can really define the best practices and methods for how labor should work with the automation. These are new systems, and workers often don't know really how they are supposed to interact."

You can also then put the standards in place to know very precisely how many workers should be need in each area, and then be able to tie the performance against those goals and standards.

"I think it could make a DC automation project much more consistent and deliver better results," Gilmore said.

 

Any reaction to these questions and answers from Gilmore and Holste? What would you add? Let us know your thoughts at the Feedback section below.



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