CRE Sensors, Vision & Perception Flashcards
6 cards from real CRE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CRE Sensors, Vision & Perception flashcards as text
A rotary encoder mounted on a robot joint primarily measures:
Answer: Joint angular position or displacement
Encoders convert mechanical rotation into electrical pulse counts, providing the controller with precise joint position feedback.
A force/torque sensor mounted at the robot's wrist is used to:
Answer: Detect contact forces and moments during manipulation or assembly
Wrist-mounted force/torque sensors measure all six components of contact forces and moments, enabling compliant control and safe contact detection.
LiDAR sensors measure distance by:
Answer: Emitting laser pulses and measuring their round-trip time of flight
LiDAR calculates range by precisely timing the interval between emitting a laser pulse and receiving its reflection from a surface.
An Inertial Measurement Unit (IMU) combines which two sensor types?
Answer: Accelerometers and gyroscopes
IMUs integrate accelerometers measuring linear acceleration with gyroscopes measuring angular rate to estimate orientation and motion state.
Proximity sensors in industrial robot cells are most commonly used for:
Answer: Detecting object presence without physical contact
Proximity sensors detect nearby objects using inductive, capacitive, or optical principles, triggering signals without requiring physical contact.
Which sensor type is best suited for measuring precise 3D surface profiles of workpieces in manufacturing?
Answer: Structured light scanner or laser profilometer
Structured light systems and laser profilometers project known patterns onto surfaces and triangulate point positions to reconstruct accurate 3D geometry.