Sensor ⇆ Network ⇆ Actuator

The acronym IoT stands for ‘Internet of Things’. It means that all devices are connected to the internet. Devices are divided in Sensors and Actuators.



Sensors measure (sense) the status of the environment. The accuracy of the measurements is important. This is easier said than done. Put 5 sensors next to each other and you will find 5 different values. [expand; so how to deal with this? Better sensors? More sensors?]

External input can also be used for information. An online weather forecast can be a significant input for analysis and decisions.



Actuators are devices that execute an ‘action’. For example, this could be switching on the lighting, but just as well increasing ventilation, lowering the blinds or switching off the air conditioning. Actuators introduce a change to the environment, mechanically or electronically.



Sensors measure and actuators action. Both devices are connected with each other via a network, also called the infrastructure. This can be wired or wireless, local or connected via the internet. Selecting the right infrastructure is a fundamental choice when creating a Smart Building. It is the foundation for any future change, expansion or enhancement. The initial choice has a major impact on the future possibilities.