Which sensor is commonly used in IoT smart agriculture to measure moisture content in soil?
Soil moisture sensors measure volumetric water content in soil to automate irrigation pumps.
What is the primary function of a 'PIR (Passive Infrared) Sensor' in smart home IoT systems?
PIR sensors detect motion based on infrared radiation variations, commonly used in security alarms and smart lighting.
Which MEMS (Micro-Electro-Mechanical Systems) sensor measures orientation, angular velocity, and tilt in smart wearables?
IMU (Inertial Measurement Unit) sensors like MPU6050 combine a 3-axis accelerometer and 3-axis gyroscope to track motion.
What reliability characteristics are commonly emphasized in Industrial IoT (IIoT) systems compared with many consumer IoT systems?
IIoT systems often support mission-critical or safety-related operations, so predictable latency, high reliability, security, and operational safety are important design requirements.
What security mechanism protects firmware updates sent over-the-air (OTA) to IoT devices?
Secure OTA firmware updates use digital signatures (RSA/ECC) so the target device authenticates the vendor before flashing.