Wireless Sensor Networks

Wireless sensor networks are gradually invading our daily lives, offering us new services every day. We find them in applications that affect us more and more. First used to monitor the environment and animals, they then provided support in first-aid and structure monitoring activities. Now, they're appearing in applications even closer to home to enhance our comfort, as when they guide us to available parking spaces or inform us about air quality.

But what exactly are they? And what can they be used for? That's what we'll be looking at in this article. We'll also look at the technological challenges they present, and how researchers are responding to them. We'll see how they discover each other, how they communicate and route information in a simple way, despite their limited computing capacity, memory space and reliance on batteries. We'll see that while many solutions have been found, many challenges remain.

Finally, we'll see that advances in science now make it possible to transform these small sensors into small robots, meaning that their mobility can be controlled. This opens the way to even more applications, such as exploring dangerous areas like the site of a nuclear power plant after a crack in a reactor. But it also brings with it new and ever more interesting challenges.