Researchers develop construction robot for disaster relief situations

A group ofresearchers in Japan has developed a prototype of a vision-guided robot that will aid in disaster relief situations.

As part of the Impulsing Paradigm Challenge through Disruptive Technologies Program (ImPACT’s) Tough Robotics Challenge Program, researchers from Osaka University, Kobe University, Tohoku University, The University of Tokyo, and Tokyo Institute of Technology developed the constructionrobot. While the robot looks like an ordinary hydraulic shovel, it is fitted with a number of additional technologies to enable it to be deployed into disaster relief scenarios.

One such technology is a vision system comprised ofvisible cameras and a long wave infrared (LWIR) camera. While camera types or vendor names are not specifically mentioned, Osaka University notes that the infrared camera is used so that the operator can use the robot while assessing the situation even in bad weather conditions such as fog. Additionally, four fish-eye cameras mounted on the robot provide the operator images of an overhead view.

The team worked to develop technology that "quickly and stably controls the heavy power machine with high inertia by achieving target values regarding location and speed through fine tuning and by controlling pressures on a cylinder at high speeds." They also worked to develop a number of other elemental technologies, including vibrotactile feedback, which is accomplished via a force sensor installed at the end effector of the robot, which enables the robot to measure high frequency vibration.

Technology was also developed for estimating the external load in each hydraulic cylinder with multiple degrees of freedom. The estimated force is then used for force control or force feedback to the operator of the robot. Additionally, the researchers developed technology for flying an unmanned aerial vehicle (or "drone") in the proximity of the robot to provide images and assess the area around the robot.

In addition to these technologies, the researchers are developing a number of other elemental technologies and making efforts to improve overall technical performance. They are also developing new robots with a double-rotation mechanism and dual arms with the purpose of achieving higher operability and terrain adaptability.

View theOsaka University press release.

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