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Concept
S-bot mobile robot
Summary
The s-bot is a small (15 cm) differential wheeled (with additional tracks) mobile robot developed at the LIS (Laboratory of Intelligent Systems) at the EPFL in Lausanne, Switzerland between 2001 and 2004. Targeted to swarm robotics, a field of artificial intelligence, it was developed within the Swarm-bots project, a Future and Emerging Technologies project coordinated by Prof. Marco Dorigo. Built by a small team of engineers (Francesco Mondada, André Guignard, Michael Bonani and Stéphane Magnenat) of the group of Prof. Dario Floreano and with the help of student projects, it is considered at the time of completion as one of the most complex and featured robots ever for its size. The s-bot was ranked on position 39 in the list of “The 50 Best Robots Ever” (fiction or real) by the Wired magazine in 2006.
This is a research robot, aimed at studying teamwork and inter-robot communication. To do this, the s-bots have several special abilities:
Using their gripper (red in the photos), they can connect. Then they can, for instance, pass over gap and steps where a single robot would have failed.
Using their integrated force sensor, they can coordinate to retrieve an object to a certain location without the use of explicit communication. This is the way ants bring preys to the nest.
Of course, all other sensors and actuators, also found on other robots, can be used to do teamwork such as food foraging.
12 cm diameter
15 cm height
660 g
2 LiIon batteries
1 hour autonomy moving
400 MHz custom XScale CPU board, 64 MB of RAM, 32 MB of flash memory
12 distributed PIC microcontroller for low-level handling
Custom Linux port running Familiar
Wi-Fi
2 treels
turret rotation
rigid gripper elevation
rigid gripper
3 axis side arm
side arm gripper
15 infrared sensors around the turret
4 infrared sensors below the robot
position sensors on all degrees of freedom except gripper
force and speed sensors on all major degrees of freedom
2 humiditiy sensors
2 temperature sensors
8 ambient light sensors around the turret
4 accelerometers, which allow three-dimensional orientation
1 640×480 camera sensor.
Official source
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