CRE CRE Sensors, Vision & Perception

Question 1

A rotary encoder mounted on a robot joint primarily measures:

Accepted Answer

Joint angular position or displacement

Answer

Joint operating temperature

Answer

Motor winding current

Answer

Applied joint torque

Question 2

A force/torque sensor mounted at the robot's wrist is used to:

Accepted Answer

Detect contact forces and moments during manipulation or assembly

Answer

Measure ambient environmental temperature

Answer

Track end-effector linear velocity

Answer

Calibrate joint encoder offsets

Question 3

LiDAR sensors measure distance by:

Accepted Answer

Emitting laser pulses and measuring their round-trip time of flight

Answer

Capturing and comparing stereo image pairs

Answer

Emitting ultrasonic sound waves

Answer

Detecting changes in magnetic field strength

Question 4

An Inertial Measurement Unit (IMU) combines which two sensor types?

Accepted Answer

Accelerometers and gyroscopes

Answer

Camera and microphone

Answer

Force sensors and encoders

Answer

Ultrasonic and infrared sensors

Question 5

Proximity sensors in industrial robot cells are most commonly used for:

Accepted Answer

Detecting object presence without physical contact

Answer

Measuring surface temperature of workpieces

Answer

Capturing high-resolution surface images

Answer

Measuring joint reaction torques

Question 6

Which sensor type is best suited for measuring precise 3D surface profiles of workpieces in manufacturing?

Accepted Answer

Structured light scanner or laser profilometer

Answer

IMU

Answer

Thermocouple

Answer

Barometric pressure sensor