ANT provides a simple, low cost and low power solution for short range wireless communication in point-to-point and more complex network topologies. Suitable for many applications, ANT is today a proven and established technology for collection, automatic transfer and tracking of sensor data within sports, wellness management and home health monitoring applications.
ANT defines ultra low power as an average current of micro amps, as low as 5 uA for ANT devices, and peak current within the specification of a coin cell. In terms of battery life, a single coin cell should operate for years.
Every release of ANT has to go through a strict process of optimization to ensure that the code space is minimized. For example, the generic ANT code supporting eight channels can be well fit in a 16k code space and the heart rate monitor specific ANT code can be packed in a 2k memory. As well, there is no requirement for precise timing synchronization to establish an ANT network, therefore a moderate crystal will suffice.
ANT supports from basic and peer to peer to complex practical mesh network topologies.
An ANT device can support multiple (up to 8) independent ANT channels. Any channel on a given node can operate as a slave or master. Relaying a message from one node to another becomes a breeze. No coordinator or network level master is required to accomplish complex topologies.
ANT can address up to 2^32 unique devices on a specified network key. For a given star network, if each link needs an independent ANT channel, the maximum number of devices is the channel capability of the ANT device used by the hub, which can be 8 if using AP2 or AT3 products.
When a hub needs to poll data from multiple nodes periodically, shared channel makes it extremely easy. All the sensors with assigned addresses share the same ANT channel and the only sending data when its address is pinged by the hub. A sensor can join a tree network in an ad-hoc fashion in the case of an auto shared channel. An ANT shared channel is able to operate 65533 nodes.
On a given frequency, more than 100 ANT channels can co-exist harmoniously within the vicinity.
For more specific data visit: http://www.thisisant.com/technology/feature-highlights
and protocol datasheet http://www.thisisant.com/images/Resources/PDF/1204662412_ant%20message%20protocol%20and%20usage.pdf
TI announce new CC257x chip consists of MSP40 micro controller and ANT communication platform (http://www.ti.com/ww/en/mcu/ant/index.shtml?DCMP=TI_ANT&HQS=Other+OT+ant )
ANT+ and iTMP announce the Digifit™ Ecosystem – the first iPhone™ apps that integrate running and cycling tracking with a heart rate monitor. Apps store for iPhone: http://itunes.apple.com/us/app/id334636809?mt=8
Digifit™ is the only heart rate monitor on the iPhone, iPod touch and iPad.
Using ANT+ technology, Digifit™ Connect collects data from a variety of fitness & health sensors.
more: http://digifit.com/what-is-digifit/
One existing device:
HartBeat monitor :http://investor.ti.com/releasedetail.cfm?ReleaseID=519563
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