Welcome to the Center for Robot-Assisted Search and Rescue (CRASAR) at Texas A&M University

CRASAR is a Texas A&M Engineering Experiment Station Center whose mission is to improve disaster preparedness, prevention, response, and recovery through the development and adoption of robots and related technologies. Its goal is to create a “community of practice” throughout the world for rescue robots that motivates fundamental research, supports technology transfer, and educates students, response professionals, and the public. CRASAR is a dynamic mix of university researchers, industry, and responders.

CRASAR has participated in 15 of the 35 documented deployments of disaster robots throughout the world and have formally analyzed 9 others, providing a comprehensive archive of rescue robots in practice. Our industry partners and funding agencies make a wide range of small land, sea, and air robots available for use by responders at no charge through the Roboticists Without Borders program. Our human-robot crew organization and protocols developed first for UGVs, where studies show a 9 times increase in team performance, and then extended for small UAVs during our flights at Hurricane Katrina has been adopted by Italian and German UAV response teams and was used by the Westinghouse team for the use of the Honeywell T-Hawk at the Fukushima nuclear accident.

CRASAR helps organize and sponsor conferences such as the annual IEEE Safety Security Rescue Robotics conference and workshops such as the recent NSF-JST-NIST Workshop on Rescue Robots.

A good overview of rescue robotics is in Disaster Robotics by Robin Murphy (MIT Press, Amazon, and Kindle) and  Chapter 50 of the award-winning Handbook of Robotics. Here’s a list of all known robot deployments: Table of Responses.

Fun facts from “Disaster Robots”:

- All ground, aerial, and marine robots have been teleoperated (like the Mars Rovers) rather than fully autonomous (like a Roomba), primarily because the robots allow the responders to look and act in real-time; there’s always something they need to see or do immediately

- Robots have been at at least 35 events, and actually used at at least 29 (sometimes the robot is too big or not intrinsically safe)

- The biggest technical barrier is the human-robot interaction. Over 50% of the failures (a total of 27 at 13 incidents) have been human error.

- Robots are not used until an average of 6.5 days after a disaster; either an agency has a robot and they use it within 0.5 days or they don’t and it takes 7.5 days to realize a robot would be of use and get it on site

Click here for more information about CRASAR and its activities.

Donate online to CRASAR to support deployments of Roboticists Without Borders!

Recent News From Our Blog

Nepal: recommendations for small UAVs

As the tragedy in Nepal unfolds, the immediate rescue response has ended and now efforts are shifting to agencies working on the mitigation of the event and dealing with continuing cascade of consequences and hopefully to recovery as well as humanitarian relief.  We have not been asked to participate and cannot self deploy but to those planning to fly small UAVs, I recommend that you look over the range of uses of small UAVs in the past 8 earthquakes in the past blog (and in more detail in Disaster Robotics). Plus:

  • Be aware that the altitude may change the performance of your platform
  • Working in complex terrains such as mountains will impact any preplanned paths. We have found that imagery reconstructions from fixed-wings will do better with a series of flights “stair stepping” along a hill or mountain than trying to cover the entire area at one altitude. Also a flight at one altitude may violate any flight AGL restrictions because to be high enough to fly at the top of the mountain, you’ve almost certainly exceeded the AGL limits for the lowest part of the terrain. We have found that rotorcraft flight plans work better as a set of vertical planes.
  • If you are planning to conduct structural inspection missions, you will most likely need to fly with 3-10m of the structure. Be aware that this creates wind effects and can interfere with GPS and wireless connectivity. Also, our research with civil engineers indicates that no matter how much video or photos we try to take, having a specialist who knows exactly what to look for is critical.
  • Expect engineers and structural specialists to use the raw images. Our studies at Disaster City indicate that orthomosaics do not accurately show straight edges on buildings and have a slight bit of ghosting, regardless if from fixed or rotorcraft.
  • Be aware that the country may have a temporary flight restriction in order to protect manned helicopters working at low altitudes in the area- that applies to anything that flies, there are no hobbyist exemptions. The normal procedure is for ANY aircraft, manned or unmanned, to coordinate with the air traffic control so that the manned helicopters can continue to operate. Regardless, manned systems cannot see small UAVs and thus cannot avoid. Should they see a small UAV operating and are not briefed, they typically have to return to base because of the possibility of a collision. Sending someone to the Air Branch of the incident command can go a long way to making sure ad hoc flights don’t accidentally interrupt other activities.


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