What's the best solution for body area network

[abcyxjk]

I am PHD student in china and doing research about gait retraining. I am designing wearable sensor that monitoring gait and giving vibration feedback to retrain the gait and I want it wireless. But I am not familar with wireless technology and don't know which chip I should choose.

I need 8 sensors, each sensor need send 18 Bytes each package with 100Hz sample rate and should able to receive some feedback commands sometimes. The system should run in real-time, so the delay must low than 0.2s.

I find a product said using Nordic Semiconductor nRFL01 + radio, ultra low power, which I think actually is nRF24L01. That system have 15 small sensors and a very big receiver. That system is what I want to design. www.apdm.com/.../

Who can help me? Thanks!

[Hung Bui]

@abcyxjk : nRF24L01+ is a radio connectivity chip you would need an extra MCU for it. For new design, I would suggest you to start with the nRF51822.

The nRF51822 has very similar radio (and compatible) with the nRF24L01+. But it has a 32bit Cortex M0 MCU core on it, so you don't need to use an external MCU. It also has support for Bluetooth Smart, so that you can send your data and display directly to the smart phone.

If you need more powerful MCU and lower power consumption you can think of using the nRF52. It's in the preview stage, the chip production version is scheduled for December 2015.