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Robotics

Mobile robots are getting smarter and going new places

Autonomous mobile robots (AMRs) are working alongside humans and providing help in applications such as hospitals and warehouses thanks to advances in mobility and mapping technology.

By Laura Moretz February 4, 2020
Courtesy: Robotic Industries Association/Waypoint Robotics

In warehouses, hospitals, and factories, mobile robots are doing tasks that can tax workers with repetitive stress injuries or fatigue. Autonomous mobile robots (AMRs) carry heavy loads in factories, deliver meals, medicine, and laundry in hospitals, and select and pick products off warehouse shelves for shipments. In some cases, AMRs can fill empty jobs that lack applicants, and in others, they work alongside humans.

Robot manufacturers are incorporating better mapping systems into AMRs to create routes through the workplace, creating better sensors to protect people who work in the same space with AMRs, and finding optimal methods for recharging AMRs.

New hospitals and hotels plan on robots

In hospital environments, Aethon’s TUG carries meals, medicine, and linens. Peter Seiff, senior vice president for Aethon, said, “When you’re operating a hospital, it’s a miniature city in a lot of ways.” The patients have a lot of needs. Aethon programmed the TUGs to be personable and friendly when meeting people, using scripted phrases. The University of Pittsburg Medical Center uses 27 Aethon TUG robots.

Swift is an autonomous mobile manipulation robot (AMMR) that works like a human order picker, moves through inventory aisles, finds the right products, picks them into a tote, and then transports that tote downstream for packaging and shipment. Courtesy: Robotic Industries Association/IAM Robotics

Swift is an autonomous mobile manipulation robot (AMMR) that works like a human order picker, moves through inventory aisles, finds the right products, picks them into a tote, and then transports that tote downstream for packaging and shipment. Courtesy: Robotic Industries Association/IAM Robotics

Seiff hopes architects and owners will plan for AMRs when they design hospitals and hotels and creating designs that optimize space for AMRs and humans. He said that as they employ robots, hospitals could eliminate laundry chutes and linen storage closets if AMRs like TUGs take away old linens and deliver fresh ones. In addition, there’d be a gain in floor space.

The TUG rarely needs human backup, but if it does, Aethon has a cloud command center that guides TUGs remotely and also updates software for the company’s 800 TUGs. Seiff said the command center allows Aethon to address 97% of any issues with the robots remotely and without on-site support.

AMRs help with worker shortages

Jason Walker, the CEO and co-founder of Waypoint Robotics, believes the need for AMRs is growing because employers can’t find enough workers to hire. Walker said, “Our value proposition is: ‘Let’s take the people you’ve already got who you know and trust and love, and let’s give them better tools.’”

Waypoint’s AMRs are ready to work soon after they arrive on a loading dock. They don’t need weeks of attention from engineers to get up to speed. They can drive through a factory once and make a map that will guide its future movements. Waypoint’s Vector, which has payloads of 300 pounds and 600 pounds, and MAV3K, which carries up to 3,000 pounds, can move materials efficiently. MAV3K can “move pallets and large material loads, and it’s great for mobile manipulation with really big arms,” Walker said, but it’s not a forklift, and so it doesn’t work alone.

MAV3K is a 3,000-lb capacity, industrial strength, omnidirectional, autonomous mobile robot. Courtesy: Robotic Industries Association/Waypoint Robotics

MAV3K is a 3,000-lb capacity, industrial strength, omnidirectional, autonomous mobile robot. Courtesy: Robotic Industries Association/Waypoint Robotics

The future for AMRs involves heterogenous fleets of AMRs, Walker said. “We’ve built our systems so that they are easy to integrate and are interoperable with all kinds of third-party external systems.” He envisions AMRs from multiple manufacturers working together to complete jobs.

Through a partnership with Wibotics, Waypoint has adopted a wireless charging method called EnZone which uses radio frequency at multiple sites within a workplace. “As long as you get the receiving antenna within about an inch of the transmitting antenna, it will charge at full power, and it will do it all day long.”

Waypoint is selling Enzone to other companies, he said. “The reason we want to do that is to create an ecosystem and a standard in the robotics community where we all use one type of wireless charging system. I’d rather create a bigger pie than hoard the piece I’ve got.”

Future AMRs will slowly build on current success

Tom Galluzzo, the founder and chief technology officer of IAM Robotics, says that IAM focuses on helping companies to pick, pack, and ship longtail inventory in warehouses, that is, items stocked in small amounts. IAM’s AMR, Swift, locates merchandise, uses Flash to read the SKUs, grasps the package, and moves it. It is controlled by the Swift Link server, which integrates with the existing warehouse management server.

IAM Robotics’ first client was Rochester Drug, a large cooperative of pharmacies that needed automation to fulfill orders at night to be delivered the next day. Galluzzo says IAM Robotics is working “with everyone from fortune-five level retailers to two major health and beauty corporations that work internationally.”

Galluzzo expects that “as robots need to become more complex, there might be a slow down as far as implementing them.” With the current technology, AMRs have the potential to do up to 80% of the thinking, he says. “That frees up a person to do higher value critical thinking for operations.”

[subhead] Robots perform better with fast, accurate maps

Kaarta, founded in 2015, creates 3D maps in real time. Kevin Dowling, CEO, said, “We’re essentially answering two questions for robots. One is: What is around me? Which is the map? And then, where am I? Which is its location.” He said customers use Kaarta software for AMRs in retail and factory environments. “We’re a thin part of the full stack but a very important part.” In addition, the company’s Contour software was used recently in the six-part National Geographic documentary series “Buried Secrets of WWII.”

Some clients in the construction industry use a Kaarta device mounted to an AMR with legs to map difficult terrain. Data is uploaded to Kaarta’s cloud where it is processed. Kaarta can create a map for robots to use, or the software can be within the robot.

Autonomous mobile robots intelligently navigate grocery and other retail stores using a point cloud created by a Kaarta mobile 3D scanner as master map. This 60,000-sq-ft store 3D map was scanned in less than one hour with a Kaarta Stencil system. Courtesy: Robotic Industries Association/Kaarta

Autonomous mobile robots intelligently navigate grocery and other retail stores using a point cloud created by a Kaarta mobile 3D scanner as master map. This 60,000-sq-ft store 3D map was scanned in less than one hour with a Kaarta Stencil system. Courtesy: Robotic Industries Association/Kaarta

In addition to attaching a Kaarta system to an AMR, it can be attached to a handheld device and walked through a space to create a map. Dowling said, “A large Wal-Mart takes about three hours to fully scale. There is some post-processing afterward, but the onsite time is reduced.” The system can also be attached to a drone to create a map.

Remote controls keep humans in control

In 2018, Fort Robotics, formerly part of Humanistic Robotics, separated its operations to focus on refining and marketing remote safety controls for AMRs.

Daria Duda, the director of product marketing at Fort, said the company designed the Wireless E-Stop and Safe Remote Control System to prevent dangerous AMR interactions with humans. The company sells the controls in construction, agriculture and warehousing markets. “There’s always going to be a need for a human to stay in control of automation or mobile robotic machine,” she said. The remote control technology can be within existing remotes, or it can be a separate control.

As to Fort’s vision for the future, she said: “We want to keep things broad to gauge where the market is going and what industries are moving faster than others.”

AMR advances mean better machine collaboration

Mobile robots have developed the ability to lift, carry, pick, pack, sense obstacles, and stop to avoid collision. Increasingly, mobile robots from different manufacturers work collaboratively to complete tasks, and developers continue to build on existing skills. As AMRs become more able, doing most of their own thinking, humans will continue to supervise them. Developers will build on existing strengths and improve robot collaboration.

Laura Moretz is contributing editor for the Robotic Industries Association (RIA) and Robotics Online. RIA is a not-for-profit trade association dedicated to improving the regional, national, and global competitiveness of the North American manufacturing and service sectors through robotics and related automation. This article originally appeared on the RIA website. The RIA is a part of the Association for Advancing Automation (A3), a CFE Media content partner. Edited by Chris Vavra, associate editor, Control Engineering, CFE Media & Technology, cvavra@cfemedia.com.

Keywords: mobile robots, AMRs

MORE ANSWERS

Autonomous mobile robots (AMRs) can work alongside humans and improve on operations if they’re given the space and the ability to operate.

Mobile robots can be programmed to map and navigate tight spaces such as grocery and retail spaces.

Mobile robots are increasingly being developed to work collaboratively and build on existing skills.

Consider this

What applications would you use mobile robots for and how would they be beneficial?


Laura Moretz
Author Bio: Laura Moretz is contributing editor for the Robotic Industries Association (RIA) and Robotics Online.