Answer Happy

1. Explain, how one sensor signal is different from the
other?
2. Why do we need Analog-to-Digital Converter (ADC) and
Digital-to-Analog Converter (DAC) in IoT system? Explain.
3 We discussed on how we can track arm postures with a
smartwatch using Accelerometer, Gyroscope, and Magnetometer IMU
sensors. Explain, how will you relate the different arm gestures
with human emotions (e.g. happy, sad, depress etc.)?
Hint: Show how arm gesture varies with human emotions. Find a
mathematical model for arm posture with different emotions using
IMU sensors (Accelerometer, Gyroscope, and Magnetometer) signals
from smartwatch. As examples:
Arm Posture_for Happy = < Elbow Location, Wrist Location,
Wrist Rotation >
Arm Posture_for Sad = < Elbow Location, Wrist Location, Wrist
Rotation >
Arm Posture_for Angry = < Elbow Location, Wrist Location,
Wrist Rotation >
Arm Posture_for Depress = < Elbow Location, Wrist Location,
Wrist Rotation >
4. What is a wireless sensor network? Explain the ‘hidden
terminal problem’ and ‘exposed terminal problem’ in a wireless
network.
ANSWER ALL QUESTIONS PLEASE!!!