Swarm intelligence\'swòrm in-'te-lə-jən(t)s\ describes the collective behavior of decentralized, self-organized systems, natural or artificial.
The Colony project of the Carnegie Mellon University Robotics Club demonstrates the capabilities of a colony of simple low-cost robots that are able to localize relative to each other using "swarm intelligence". Each device gathers information about its environment via simple one-dimensional sensors, such as IR beacons, and shares data via an ad hoc wireless network.
The Scout is designed as an evolution of the current platform employed by the Carnegie Mellon project. It builds on the technology of the Colony III robots (top picture) and offers new functionality to each individual robot. In this way each robot can offer more intelligence to the swarm, operate over more extreme terrain, and cover larger distances more quickly. Scout takes the lessons gleaned from several years of research and aims to provide a simple interface into a powerful set of reliable technologies.
At the outset of the Scout project in April of 2009, several goals were defined. The new robot should have:
The cost restriction has been a major driving factor for most design decisions and even the motivation for the project. There are many commerical solutions that offer compact and capable robots, but at a price point unsuitable for undergraduate studies and invididual research.
We aimed to develop a platform enticing to individuals, companies, and research institutions, but at a price point that doesn't hinder innonvative research.
Kiva's robots carrying package racks (Credit: Forbes.com)
Colonies of robots have many applications. They can solve larger problems than individual robots. The Idaho National Engineering and Environmental Laboratory has developed a colony of robots that seeks out liquid spills. They surround the spill by having each robot locate part of the edge of the spill. Kiva's orange package carrying robots perform orchestrated dances in warehouses across the United States, enhancing productivity of the entire delivery system.
Tech | Colony III | Scout |
---|---|---|
Processor | 8MHz 8-bit AVR | 600MHz 32-bit Cortex A8 + 16MHz 8-bit AVR |
Rangefinders | 5 Position (1.5-12in) IR | 48 Position, 360-degree coverage (0-20ft) Sonar |
Battery | 6.0VDC 2.6Ah NiMH | 7.4VDC 3.0Ah Lion |
Locomotion | 2 Wheel Differential Drive | 4WD Skid Steer |
Ground Clearance | None | 1.34" Clearance with Rocker Pivot to conform to terrain |
Cliff Detection | None | 3 Side Drop-off Detection |
BOM | 16 Point IR | 4 Point IR with modulation and noise suppression |
Wireless | Zigbee, 300 ft range | Zigbee, >300 ft range |
Charging | Removable | Integrated homing and charging contacts |
Extension | None | Accessory/Expansion hardpoints and power/data connection |
Production | Botrics | In-house design and manufacturing for full control over device lifetime |