SNIOT_1.3_IoT Sensing

What is the primary purpose of sensing in IoT applications?

• Data visualization

• Gathering data as the first step in IoT solutions

• Executing actions based on collected data

• Controlling devices remotely

What does actuation involve in IoT?

• Monitoring changes in the environment

• Converting energy into signals

• Executing actions based on data collected and processed

• Analyzing sensor outputs

What is transduction?

• The process of converting energy from one form to another

• The transmission of sensor data

• The activation of actuators

• The process of digitizing signals

Which type of sensors measure scalar quantities?

• Multimedia sensors

• Vector sensors

• Scalar sensors

• Hybrid sensors

What defines multimedia sensing?

• Measuring scalar properties over time

• Capturing spatial and temporal variance in quantifiable properties

• Combining scalar and vector sensing

• Extrapolating data for remote locations

What is sensor resolution?

• The ability to measure true values accurately

• The smallest change a sensor can detect

• The consistency of repeated measurements

• The ability to avoid environmental deviations

Which type of sensors operate without emitting energy?

• Active sensors

• Passive sensors

• Transducers

• Multimedia sensors

What is the role of a transducer?

• To convert external stimuli into readable outputs

• To amplify sensor signals

• To convert energy from one form to another

• To measure vector properties

What is hysteresis error?

• Random deviations in sensor output

• Sensor output depending on previous input values

• A constant offset in measurement

• Sensor sensitivity deviating from specification

What defines virtual sensing?

• Sensing scalar properties using multimedia sensors

• Extrapolating data from existing sensors to infer measurements for areas without physical sensors

• Measuring both scalar and vector properties simultaneously

• Using active sensors for remote monitoring