Bluetooth Low Energy – A New Connectivity
Revolution
The first Bluetooth
Low Energy chips have been made, and a new Bluetooth revolution
is on its way. Bluetooth Low Energy offers an entirely new set
of applications that will to change our lives for the better.
What is Bluetooth Low Energy?
Bluetooth Low Energy is pretty much what it says on the tin. It
is a new Bluetooth protocol that is built on the standard
Bluetooth protocol but uses incredibly small amounts of
electrical energy; so little in fact that a device will be able
to operate for a full year using only one tiny button cell.
How long has it been around?
Although the very first Bluetooth Low Energy chips to be
manufactured appeared in April 2009, the concept has been around
for a couple of years and it has been called different things.
When the Bluetooth Special Interest Group (SIG) first came up
with the concept it was called Wibree. Later it was renamed as
Ultra Low Power (ULP) Bluetooth Technology, and it acquired its
current name in 2009.
How will it
be used?
Bluetooth Low Energy is the next evolution of Bluetooth and it
is designed to transfer data between two devices extremely
efficiently and using only a minimal amount of electrical
energy. How this will work is best explained by an example.
Imagine that you are wearing a Bluetooth low energy sportswatch
that monitors your heart rate and your blood pressure
continually whilst you are out on a training run. Without you
taking any action, your sportswatch will be able to transfer
this data to your phone using Bluetooth Low Energy, and your
phone will be able to transmit this data over the internet
directly to your website so that you can analyse it later or so
that your coach to can examine it in real time.
This is just one example and naturally there are a great many
other potential applications. We will outline some more later in
this article and we will describe them in depth in future
articles.
Evolutionary or Revolutionary - which one is it?
So far we have referred to this new technology as revolutionary
and evolutionary. This is not an error or an attempt to confuse
our readers. In fact Bluetooth Low Energy is both. It is
evolutionary in that it builds on conventional Bluetooth
technology and extends the design experience that has been
gained already, and it is revolutionary in that the new
Bluetooth Low Energy protocol has been designed from scratch or,
as the engineers like to say, from the bottom up. It is also
revolutionary in what it will enable Bluetooth to achieve in
terms of new applications and devices.
* Check out some great Bluetooth
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