Strict safety requirements mean that infrastructures such as tunnels, refineries and bridges become expensive and time consuming to inspect and maintain. But with robots and digital systems based on tools such as sensors and artificial intelligence, tasks can be done more efficiently and at lower costs. The project, called Piloting, has now developed ten drones and ground robots that have been tested in real working conditions.

“The aim of the project is to reduce the inspection time by 80% compared to traditional methods,” says Henrik Lundqvist, senior researcher and project leader at SINTEF, who took part in the pilot project. “The other purpose of using robot technology is to reduce inspection costs by at least 25%,” he says.

Tested in Greece

Greece recently conducted the first tests of an entirely new system that could end the long-term closure of infrastructure such as tunnels. Researchers have developed a ground-based robotic vehicle with an inspection camera and Lidar technology that will be used to take images and take 3D measurements of otherwise inaccessible infrastructure. The vehicle is also equipped with a drone that can take detailed pictures when needed.

Algorithms that enable automatic detection of structural defects are currently being tested. These algorithms are powered by data collected during audits and should also be used to monitor infrastructure for a long time. Thus, the system can contribute to the estimation of maintenance time.

“SINTEF is working on the development of a sensor system that will allow ground vehicles to navigate tunnels and other infrastructures where there is no access to satellite navigation,” explains Lundqvist. “Such a system allows the robot car to pinpoint any damage in the tunnel, making it easier to track the evolution of the damage over time and re-find such areas for subsequent inspections.”

Find others who need help with checks

“We want to connect with other companies that have more infrastructure and are interested in inspection, maintenance and autonomous vehicles,” Lundqvist says. “We will be happy to demonstrate the system we have developed and offer opportunities to test it. This will allow other participants to evaluate how the system can be further developed and adapted to the specific challenges we face in Norway.”