devices PRM 1

Question 1

Accerlerometer

Answer 1

➡ Measures movement by detecting changes in speed and direction across 3 axes (X, Y, Z); helps count steps, track activity, and sleep patterns.

Question 2

Gyroscope

Answer 2

➡ Detects rotation and orientation by measuring angular velocity; used for posture, fall detection, and gesture recognition in smartwatches.

Question 3

PPG Sensor

Answer 3

Uses green or infrared light to shine into the skin and measures how much light is absorbed by blood vessels; calculates heart rate and blood oxygen (SpO2).

Question 4

ECG Sensor (Electrocardiogram)

Answer 4

➡ Uses metal electrodes to pick up the electrical signals generated by your heartbeats; used to detect heart rhythm irregularities like arrhythmia.

Question 5

Electrochemical Glucose Sensor

Answer 5

Uses enzymes that react with glucose in blood or fluid and generate an electrical signal; calculates blood sugar level in glucometers.

Question 6

Load cell sensor

Answer 6

Converts pressure (your body weight) into an electrical signal; gives accurate digital weight readings in smart scales.

Question 7

Chest Strap Monitors

Answer 7

Utilize electrodes to detect the heart’s electrical activity, akin to an ECG.

Question 8

anonymization

Answer 8

a process of removing or modifying Personally Identifiable Information (PII) from data, making it impossible to link the data back to an individua