Communication

 Actuators: Actuators are the outputs for the device—the motors, lights, and so on, which let your device do something to the outside world. IoT actuator types Actuators, as the name itself suggests, can act on their immediate environment to enable correct operation of the machines or devices they are embedded into. Small as they are, they are rarely visible during operation, but the effects of their work can be felt in vehicles, industrial machines or any other electronic equipment involving automation technologies. They can be separated into four main categories based on their construction pattern and the role they play in a specific IoT environment: Linear actuators – these are used to enable motion of objects or elements in a straight line. Motors – they enable precise rotational movements of device components or whole objects. Relays – this category includes electromagnet-based actuators to operate power switches in lamps, heaters or even smart vehicles. Solenoids – most w...

 

Sensor is a-  Device that senses a physical quantity  This physical quantity becomes input to the sensor  In the present context, the output of the sensor should be an electrical quantity   Sensor output is a function of sensor input  Input is called measured quantity or “measurand” Examples of the measurand are: Temperature  Pressure and force  Torque  Displacement, velocity and acceleration  Strain  Flow, level  pH value  Humidity  Gas concentration  Voltage and current  Power and power factor  Frequency The electrical output of a sensor can be one of the two types:   Variation of an electrical parameter   An electrical signal Variation of electrical parameter means   Variation of resistance (delta R), or  Variation of inductance (delta L), or  Variation of capacitance (delta C)  Electrical signal means  Voltage signal, or  Current signal Hence  Sensors are the ways of getting informat...