Modular Inspection Robot for Harsh Environments

Background

Inspection robots are vital in the oil and gas industry, the largest sector requiring automated surveillance due to its hazardous and extreme conditions. These robots face challenges in autonomy and reliability, especially in Canada’s harsh climates where temperatures can reach -40 °C in the northern region. The industry’s infrastructure, including pipelines and storage tanks, must be regularly inspected and maintained to prevent damage from high pressure, temperature, vibration, and humidity. Current robotic systems lack the capability to conduct thorough inspections for damage in severe outdoor conditions, particularly in harsh winter environments with snow-clad landscapes and low temperatures.

Technology Overview

University of Alberta researchers have developed a new mobile robot design that is highly modular and can be reconfigured into four different models: tracked with the robot arm, tracked with a camera PTZ mechanism, omni-wheeled with robot arm, and omni-wheeled with PTZ mechanism. With four different types of robot configurations, it is able to perform both visual and non-destructive testing (NDT) type inspection interchangeably, navigate over all kinds of outdoor terrains, move in tight spaces, and inspect various objects such as pipelines, vehicles, infrastructure, plants, and equipments, and operate in extreme temperatures ranging from -40 °C to 60 °C. Figure 1.

Benefits

• The engineered robot can operate in extreme fluctuating outdoor hot/cold temperature conditions.

• The robot’s mechanical and electrical components can withstand severe winter conditions, ensuring operability at temperatures as low as -40 °C.

• Tracks enable robot mobility over up to 30 cm of snow, and the omni-wheeled robot configuration enables inspection in tight spaces such as underneath a haul truck.

• PTZ mechanism for the CCD camera facilities visual inspection in pitch and yaw directions.

• NDT type sensor can be mounted on the robot arm’s end-effector, allowing its orientation to be adjusted in both the pitch and yaw directions.

Applications

• Potential application in inspection across various industries, including construction, and oil & gas.