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Making Robotic Movement Of Goods More 'Pallet-able'

Date:
November 10, 2006
Source:
National Institute of Standards and Technology
Summary:
Under a cooperative research and development agreement with Transbotics, a Charlotte, N.C., AGV manufacturer, NIST is developing advanced sensor processing and modeling algorithms to help robot forklifts verify the location and orientation of pallets laden with goods.

(a) Simulation of pseudo-color coded image showing man (left) and pallet (right) where blue indicates objects near the AGV and red indicates things far away. (b) The corresponding 3-D point cloud view of the man and pallet. Points seen are less than 3 meters away and lower than 10 meters in height from the sensor.
Credit: Image courtesy of National Institute of Standards and Technology

Robots running amok and destroying property may be a staple in science fiction films, but they aren't welcome in factories, warehouses and other places where automatic guided vehicle (AGV) forklifts are used. Under a cooperative research and development agreement with Transbotics, a Charlotte, N.C., AGV manufacturer, the National Institute of Standards and Technology (NIST) is developing advanced sensor processing and modeling algorithms to help robot forklifts verify the location and orientation of pallets laden with goods.

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The experimental system utilizes two onboard, single scan-line LADAR devices to negotiate obstacles and hone in on warehouse pallets. (LADAR--Laser Detection and Ranging--is an optical technology which measures properties of scattered laser light to find range and other information about a distant target.) One LADAR device, located at the base of the AGV, is used as a safety sensor to detect obstacles such as humans in the forklift's path. It also can be used to scan inside a truck's cargo area to detect the presence of a pallet or define distances from the forklift to the truck's inside walls.

The other sensor, called the Panner, is a panning laser ranger mounted on a rotating motor at the top front of the AGV. The Panner acquires many scan lines of range data that allows the scene in front of the device to be reconstructed in various visual formats such as a pseudo-colored coded image (where colors indicate relative proximity to an object) or a 3-dimensional data point "cloud." A computer model is then derived from the data with the output sent immediately to the AGV's control center. This allows the robot forklift to maneuver, load and unload pallets, verify the remaining space within the truck being loaded, and track the number of pallets still needing handling.

The research team recently presented the results of its visualization program at the SPIE Optics East 2006 Conference in Boston.* Transbotics is planning to implement the NIST pallet verification software on one of its AGVs in 2007 for use in real manufacturing situations.

* R. Bostleman, T. Hong and T. Chang. Visualization of Pallets. Presented at the SPIE Optics East 2006 Conference. October 2006 (published online Oct. 2, 2006).


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The above story is based on materials provided by National Institute of Standards and Technology. Note: Materials may be edited for content and length.


Cite This Page:

National Institute of Standards and Technology. "Making Robotic Movement Of Goods More 'Pallet-able'." ScienceDaily. ScienceDaily, 10 November 2006. <www.sciencedaily.com/releases/2006/11/061110080804.htm>.
National Institute of Standards and Technology. (2006, November 10). Making Robotic Movement Of Goods More 'Pallet-able'. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2006/11/061110080804.htm
National Institute of Standards and Technology. "Making Robotic Movement Of Goods More 'Pallet-able'." ScienceDaily. www.sciencedaily.com/releases/2006/11/061110080804.htm (accessed October 31, 2014).

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