Archive for the ‘Disaster Zone’ Category

Structural Inspection with Unmanned Vehicles

katrina sger heli isle of capriMy book Disaster Robotics (MIT Press, Kindle, and iBook) covers structural inspection, documents 16 cases where robots have been used for structural inspection after disasters (the majority by CRASAR, but I’ve documented all cases I can find reported through April 2013) and has criteria for choosing what robot,  what the different work envelopes are,  lots of tables/figures per modality, and failure taxonomy and rates.
Here’s a quick guide to structural inspection in Disaster Robotics

- Chi1 defines structural inspection tasks versus recon and other tasks identified for disaster robotics.

- Ch2 list of robots used for what incident, formal failure taxonomy; this gives an overview of the 16 cases where robots have been used for structural inspection

- Ch3 use of ground robots for structural inspection, environments/work envelopes, describes the 5 cases where UGVs used for structural inspection, formulas for how to size a robot for an inspection task and a set of design spaces, gaps

- Ch4 use of UAVs for structural inspection, environments/work envelopes, describes the 7 cases where UAVs have been used for structural inspection, choice of rotorcraft versus fixed wing, conops,  human-robot ratio and safety, issues with lots of GPS,  gaps

- Ch5 use of marine vehicles for structural inspection, environments/work envelopes, describes the 4 cases where UMVs have been used for structural inspection, the need to inspect upstream not just the bridge substructure,  choice of AUV, ROV, UMV, gaps

- Ch6 how to conduct fieldwork and data analysis, using structural inspection as an example

Phillippines: Yolanda and robots

The death toll appears to be horrific in the wake of the Super Typhoon Yolanda– we are getting inquiries as to assistance. Our thoughts and prayers go out the victims and their families.

UAVs, if on site, can provide immediate damage assessment and locate pockets of trapped survivors as well as the best transportation routes. However, if manned aircraft are available, coordination of airspace may be difficult and manned assets will generally wave off if they see an unknown UAV no matter how low or small in the area they are working in.

UMVs– water based robots- may be of great help for searching for submerged victims and determining the state of bridges, seawalls, polluting debris, etc. While this does not help with life saving, it can enormous economic impact. Initially, ROVs and unmanned surface vehicles (boats) have advantages over AUVs (underwater robots)– AUVs can’t detect the debris in the water, whereas ROVs are on a tether and USVs work on the surface. We used ROVs for the Japanese Tohoku tsunami with our partners at the International Rescue Systems Institute and greatly speed up the reopening of a key fishing port.

 

 

OKC Tornado– unmanned systems not the best fit, here’s why

Our hearts go out to the victims and the responders in Oklahoma. We have been working with the FEMA Innovation Team from shortly after the devastation occurred, however aerial and ground unmanned systems are not a good fit for this situation.

In terms of UAVs: There’s already aerial coverage from manned assets and it does not appear that multistory commercial buildings are heavily damaged. Two-story houses and apartment buildings and “strip malls” are well understood failures so additional aerial views are generally not needed to provide more information. If UAVs were available to the first responders, then they would be a much less expensive source of aerial information than manned helicopters or exploiting news helicopters. UAVs provide the ability to serve as wireless nodes (indeed, a big shout out to Roboticists Without Borders member Black Swift Technologies for their work with that) but the coordination with air traffic control and manned assets plus the deployment of COWs (cellular towers on wheels) means that if there weren’t available immediately, they are less likely to be of benefit.
In terms of UGVs: This is a wide affected area with “shallow” debris versus a big building collapse. Canines are the quickest way to locate any survivors that aren’t shouting or aren’t on the surface of the debris. You don’t need the UGV to penetrate the debris further than what a search camera can go to help find survivors or speed extrication.
In terms of UMVs: If there are lakes and streams, marine vehicles might be useful in searching for missing person who may have been swept into a pond and drowned.
We continue to stand by to provide assistance as needed.

Waco Explosion: no robots needed

We are all keeping the victims, the families, and the responders in the devastating explosion of the fertilizer plant in Waco in our thoughts and prayers. We’ve reached out and there doesn’t appear to be a need for robots at this time. The event occurred in the evening, a problematic time to fly sUAVs to get an immediate overview. Damage  to residential areas do not require robots, as canines are much faster at detecting victims and the debris is usually sufficiently shallow that the interior view from a robot is not needed for searching or extrication. Robots are sometimes useful for forensics- to enter areas and capture the scene before people enter and disturb it by virtue of entering. But the word is that they aren’t needed for this case.

Iran Earthquake: CRASAR monitoring but this type is hard for robots

Dr. Tetsu Kimura and member of our IRS-CRASAR expeditions is coming back from Robocup Rescue in Iran and has asked about CRASAR robots for the Iran earthquake. I am taking the liberty of sharing my reply:

The earthquake is awful and what another tragic loss of life.  I am a great admirer of Amir and his efforts. We’ve been watching the earthquake here– I don’t think the robots would be of much use but certainly would try to support a response. It is painful to see the loss of life.

The primary damage based on the media- which could be wrong- appears to be to mud and brick houses versus multi-story commercial buildings, if victims survive they are probably fairly shallow (less than 6m) and in voids surrounded by brick and mud has become sand– there are generally no voids from the surface to the survivor for the robot to penetrate. Dogs can readily detect the presence of a person and then it requires manpower for extraction. Existing techniques work well for depths of 6m.  Robots are slow compared to canines, and CRASAR deployment with FLTF-3 during Hurricane Charley and FLTF-3 deployment of ground robots at Hurricane Katrina showed that ground robots didn’t provide a cost/benefit for wide area search of urban residences. So unless it’s a multi-story building such as an apartment that has collapsed, current ground robots won’t make a difference and we recommend more canine teams.  In the future, something like Dan Goldman’s sandsnake robots on a large scale could help.

Landslides are also challenging for ground robots, as we saw at the La Conchita mudslides- as with the mud and brick residences you have nothing but dense dirt, not the void spaces seen in a commercial concrete structure.

The nuclear facility is another matter, of course, and the situation may call for ground and aerial inspection.

For the wide area search of residences, besides canine teams other technologies such as ground penetrating radar and better informatics to coordinate researchers and resources would be a huge potential contribution and why the Center for Emergency Informatics exists.

Finally, there is the large travel time as Satoshi noted for the Tanzania collapse, so we would arrive around 72 hours later, outside the probability of long-term survivors. The robots would add little to recovery of the critical infrastructure in this case.

Please let me know what you think. In the meantime our prayers are with the victims, their families, and the responders.

Update Tanzania collaspe: CRASAR not needed

We have been communicating with the Tanzanian Embassy in London and the response is winding down- we won’t be needed, though we may be asked to engage the Tanzanian response community at a later date to expose them to the advances in rescue robotics. We extend our condolences for the families of the four dead and two injured reported this morning in the news, and hope that the missing will be found.

We are watching the Tanzania building collapse with great sorrow and wish the Tanzanian people and responders the best as they struggle to help the victims and families and deal with their losses. We are on internal stand-by and hope to be invited to assist. In a dense building collapse like this, very small tethered robots can often go 20 to 30 m further than the 8m or so that traditional search camera systems can penetrate. The Japanese Active Scope Camera is also great for dense collapses, as seen at our deployment at the Berkman Plaza collapse in Jacksonville.

UAV used with Chemical Train Derailment- just like IEEE SSRR Paper Predicted

The Unmanned Systems Technology website reports that a Datron Scout was used to assist with a chemical train derailment last week. This is a great use of small UAVs and one which CRASAR has been exploring with TEEX through funding by the National Science Foundation.  Josh Peschel (now a research professor at the University of Illinois), Clint Arnett (TEEX), Chief David Martin (TEEX), and I presented a paper two weeks ago at the IEEE International Symposium on Safety, Security, and Rescue Robotics on “Projected Needs for Robot-Assisted Chemical, Biological, Radiological, or Nuclear (CBRN) Incidents”  based on Josh’s PhD work with 20 domain experts using a small unmanned aerial vehicle (UAV) to investigate a simulated chemical train derailment at Disaster City(r). The paper was a finalist for Best Paper.  Good to see the Scout used!

Hurricane Sandy: watching and prepping for SSRR

A post from robots.net reminded me that I hadn’t updated the blog about Hurricane Sandy. We have not been called and really didn’t expect to be. Sandy hit the NJ/NY area- home turf to Jim Bastan and NJ-TF1, the US&R task force that has been aggressively adopting robots.  They fielded the ground robots at the Prospect Towers collapse and also have been experimenting with UAVs. Likewise FDNY and NYPD have access to a wide set of technologies through the DHS National Urban Science and Technology lab.

Remember: Roboticists Without Borders patch to pointers to where robots have/are being used! Help me keep the list of robots and disasters growing!

We do expect to assist with recovery efforts such as what we did in Japan, especially with underwater assessment. In the meantime, I am personally working on the finishing touches for the 10th IEEE International Symposium on Safety, Security, and Rescue Robots, which starts on Monday. I’m the general chair with Dr. Alex Kleiner, a fabulously talented researcher in Sweden,  serving as the conference chair organizing the 43 papers from 10 countries doing most of the real work!

A Decade of Rescue Robots Video out!

Check out our new video presented at IROS 2012 for the Jubilee video competition: http://youtu.be/QPQrKAYbQUQ. It shows the past ten years of rescue robots and CRASAR’s deployments.

Iran Earthquake

The death toll for the latest Iranian earthquake appears to be settling in around 300 lives lost- a sad number. Iranian rescue roboticist and colleague Amir Soltanzadeh posted on facebook that most of the victims were in 1 story houses which were easy to search. This is where dogs excel- they can cover large areas, determining if there is a survivor in a house in minutes (or less), whereas a ground robot has no comparable sensors and would have to physically worm through the rubble to visually find a survivor- a process that takes time and energy (as in battery power is limited).  1 story houses are also easier to work with for extrication- a ground robot doesn’t offer much benefit.

Unmanned aerial vehicles may be the best initial choice of robots for disasters that pose extreme scales of distance and area– their first look can help professions prioritize the response and estimate the resources that will be needed. Together with social networking from those on the scene, professionals can get better information must faster.

The Iranian people are in our hearts and prayers and we are all grateful this earthquake was no where as bad as Bam.