Instrumentation & Measurement Magazine 24-6 - 38

Fig. 1. (a) Block diagram of a typical smart home setup, showing the main components and the data flow; (b) Details on the typical implementation of a smart
sensor (red box) and an actuator (blue box).
and maintenance, and the possibility for quickly adding or removing
sensors (scalability) without the need to install wires
and cables in the home environment. The wireless approach
has also the benefit of reducing the visual impact of the infrastructure.
Several wireless protocols [4] are available with
different performance and specifications. As an example, we
can recall: Bluetooth Low-Energy (BLE) [5], Ant [6], Zigbee [7]
and Wi-Fi. Such protocols are quite widespread in smart home
38
applications and their specifications in terms of data-rate and
range fit the requirements of home environmental monitoring
very well. It is also worth mentioning the LoRa protocol [8],
dedicated to long range communications (up to few tents kilometers),
that is quickly gaining popularity because it provides
longer range communications while maintaining low power
consumption and a data-rate suitable for most of the applications
in Internet-of-Things (IOT) and measurement fields [9],
IEEE Instrumentation & Measurement Magazine
September 2021

Instrumentation & Measurement Magazine 24-6

Table of Contents for the Digital Edition of Instrumentation & Measurement Magazine 24-6

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