Bluetooth Low Energy (BLE) is a part of Bluetooth 4.0. BLE is also called Bluetooth Smart. Former it was called Bluetooth Ultra Low Power and in the beginning the name was WiBree. A lot of names and all mean the same.
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BT 4.0 covers BLE plus BT classic 2.1 and 3.0. If classic Bluetooth and BLE are implemented in one device it is called dual mode. Dual mode chips implement the low energy specification and may consume just a tiny proportion of the power of classic BT. It allows Bluetooth to extend to coin cell battery applications. Dual mode chips combine low energy of BLE with the power of classic Bluetooth. Today it is on the way to be a de facto feature in almost all new Bluetooth enabled cellular phones, computers or portable communication devices. You find it in iPhone 4S, iPad3, Samsung S3, Samsung Note 10.1 and later laptops on Windows 8. You also will get it in the next generation of TVs and set-up boxes.
Bluetooth Low Energy (BLE) is not backwards compatible with previous Bluetooth classic standards (2.1+EDR or 3.0). That means M2M application needs often a dual mode Bluetooth module. On classic BT you will stream the big amount of data. All sensors like a heart rate belt or blood sugar sensor will run on BLE. All this sensors will run on small coin cells.
Examples for typical BT and BLE applications
• Access Points • Proximity • Industrial Control • Smart Phone• Medical • Access Points• Scanners • Temperature • Wireless Sensors • Wellness • Low Power • Sports
Dual Mode BT Module features
- Bluetooth Classic and Low Energy Dual Mode 4.0
- Surface mount type 15.6 x 8.7 x 1.8 mm³
- Up to 4.0 dBm Tx power (typical) with transmit power control
- High sensitivity (-88 dBm typ.)
- Bluetooth Dual Mode SPP and GATT profiles inside
- No external components needed
- Fast connection set up in BLE mode
- Internal crystal oscillator (26MHz)
- Integrated shielding to resist EMI
If you would like to have more details about this Bluetooth Dual Mode Module, a free of charge webinar, a study, a research, a prototype or a development of a wireless M2M product, samples or an evaluation kit just send an email to harald.naumann (at) gsm-modem.de