Wearable Devices - Unit 2

What are the three main types of wearable inertial sensors?

• Heart rate monitors, blood glucose meters, sleep trackers

• Ultrasonic sensors, RFID sensors, proximity sensors

• Pressure sensors, temperature sensors, light sensors

• Accelerometers, gyroscopes, magnetometers

How do accelerometers measure motion?

• Accelerometers measure motion by detecting magnetic fields around the device.

• Accelerometers measure motion by analyzing sound waves produced during movement.

• Accelerometers measure motion by tracking the temperature changes in the environment.

• Accelerometers measure motion by detecting changes in velocity through the movement of a mass in response to acceleration.

What is the primary function of gyroscopic sensors?

• To measure orientation and angular velocity.

• To detect sound waves and vibrations.

• To calculate speed and distance.

• To measure temperature and pressure.

What role do magnetic sensors play in wearable technology?

• Magnetic sensors primarily measure temperature changes in the environment.

• Magnetic sensors enable orientation tracking, navigation, and gesture recognition in wearable technology.

• Magnetic sensors are responsible for powering the device's battery.

• Magnetic sensors are used for heart rate monitoring in wearables.

What are invisible sensors and how do they differ from wearable sensors?

• Invisible sensors are large devices that require installation.

• Invisible sensors are discreet devices that collect data without being noticed, while wearable sensors are visible devices worn on the body for personal monitoring.

• Invisible sensors are only used in military applications.

• Wearable sensors are used for environmental monitoring only.

What is the purpose of in-shoe force and pressure measurement?

• To analyze the aesthetic design of shoes.

• To evaluate the durability of footwear materials.

• To measure shoe size for better fitting.

• To assess foot pressure distribution and improve gait analysis.

How can wearable sensors be used in fall risk assessment?

• Wearable sensors are used for heart rate monitoring only.

• Wearable sensors assess fall risk by monitoring gait, balance, and activity levels.

• Wearable sensors can predict weather changes.

• Wearable sensors help in tracking sleep patterns.

What technology is commonly used for fall detection?

• Smartphones with GPS tracking

• Wearable devices with accelerometers and gyroscopes

• Voice-activated assistants

• Home security cameras

What is the function of pedometers in energy expenditure measurement?

• Pedometers estimate energy expenditure by counting steps and calculating distance traveled.

• Pedometers track calories burned based on body weight alone.

• Pedometers are used to monitor sleep patterns and rest periods.

• Pedometers measure heart rate to estimate energy expenditure.

How do actigraphs contribute to cardiac activity monitoring?

• Actigraphs are used to monitor sleep patterns only.

• Actigraphs measure blood pressure directly during exercise.

• Actigraphs provide real-time ECG readings for heart conditions.

• Actigraphs contribute to cardiac activity monitoring by tracking heart rate variability in relation to physical activity.