Robot Sensors: Choosing the Right Ones

What is the primary factor to consider when deciding which sensors to use in a robot?

What the robot needs to measure (correct)
The size of the robot
The cost of the sensors
The type of material used to build the robot

What is the main advantage of using a push button or contact switch sensor?

Accurate distance measurement
Versatility in measuring different forces
High precision in gauging force
Low cost and easy integration (correct)

What is a limitation of using a push button or contact switch sensor?

Difficult to integrate
High cost
Measures multiple distances
Only measures single distance (correct)

What is the main advantage of using a pressure sensor over a push button?

Allows gauging how much force is being applied (C) Signup and view all the answers

What type of sensor is used to measure distances in air and is affected by the reflectivity of different materials?

Ultrasonic range finder (C) Signup and view all the answers

What is the primary advantage of a linear potentiometer?

It can measure absolute position. (B) Signup and view all the answers

What is a limitation of using an ultrasonic range finder sensor?

Affected by the reflectivity of different materials (B) Signup and view all the answers

What is the main limitation of stretch and bend sensors?

They can only measure small angles. (D) Signup and view all the answers

What is the primary advantage of a stereo camera system?

It can provide depth information and feedback about the environment. (A) Signup and view all the answers

What type of sensor is typically used to measure the absolute position of an object?

Linear potentiometer (D) Signup and view all the answers

What is a disadvantage of optical encoders?

Additional programming is required. (A) Signup and view all the answers

What type of sensor is typically used to measure a small angle or rotation?

Stretch sensor (C) Signup and view all the answers

What is a disadvantage of using an accelerometer sensor?

It is always subjected to angular acceleration (B) Signup and view all the answers

What is the principle behind an optical encoder?

Breaking an infrared beam with a spinning disk (A) Signup and view all the answers

What is a characteristic of mechanical encoders?

They can be used for both absolute and relative rotation (D) Signup and view all the answers

What is an advantage of using a light sensor?

It is usually very inexpensive (D) Signup and view all the answers

What is the purpose of a sound sensor?

To return a voltage proportional to the ambient noise level (D) Signup and view all the answers

What is a limitation of using optical encoders?

The angle is relative to the starting position (C) Signup and view all the answers

What is the primary advantage of thermal sensors?

They can be very accurate (D) Signup and view all the answers

What is the main limitation of humidity sensors?

They can only detect temperature (C) Signup and view all the answers

What is the primary advantage of thermal cameras?

They can differentiate objects from the background based on their thermal signature (B) Signup and view all the answers

What type of sensor is used to measure the altitude of a UAV?

Pressure sensor (D) Signup and view all the answers

What is the primary disadvantage of inexpensive gas sensors?

They give false positives or somewhat inaccurate readings (C) Signup and view all the answers

What type of sensor is used to detect magnets and magnetic fields?

Magnetometer (C) Signup and view all the answers

What is a common limitation of magnetic sensors?

They need to be close to the object (D) Signup and view all the answers

What technology is used in vibration sensors?

Piezoelectric or other technologies (B) Signup and view all the answers

What is the primary function of an RFID reader?

To produce a signal with the tag's ID (B) Signup and view all the answers

What is a disadvantage of using RFID tags?

They are not useful for measuring distance (C) Signup and view all the answers

What is a common shape of an RFID tag?

A small flat disc (A) Signup and view all the answers