Bluetooth 4.0 Technology

1.2 Teeth Bluetooth 4.0
1 1.2.1 Teeth what is Bluetooth 4.0

Figure 1.1 Bluetooth 4.0 logo and BLE logo
Bluetooth wireless technology is one of the most widely used global short-range wireless standards,the new Bluetooth 4.0 version
combine three Bluetooth technologies (traditional Bluetooth, high-speed Bluetooth, and low-power Bluetooth technology)。 It integrates the Bluetooth technology
The inherent advantages of the wireless connection, as well as the high-speed Bluetooth and low-power Bluetooth features, these three specifications can be
Combination, can also be used alone, low-power Bluetooth is the Bluetooth BLE 4.0 is the core specification, the technology of the largest special
Point is ultra-low power consumption and standby power, Bluetooth low-power device using a button battery can work continuously
The wireless solution with stringent requirements for both cost and power consumption, and the development of smart machines will be
More extensive area.
Currently, BLE-enabled smart devices, in addition to the IPhone (IOS system), Android has also formally joined the BLE
Team, starting with the 4.3 system, Android will provide the official API interface, and in the near future, BLE will
appear in all areas of life.
BLE is a standard that defines a range of short-distance, low-data-rate wireless communication
Letter agreement. BLE-based wireless network uses 868MHZ, 915MHz and 2.4GHz operating bands, the maximum number of
Data transfer rate is 250kbps.
Here's a specific example to show the reader the specific application of BLE. In the patient monitoring system, the disease
A person's blood pressure can be detected by a specific sensor, so the blood pressure sensor can be connected to the BLE device, and the BLE
The patient's blood pressure is regularly detected, the blood pressure data is sent wirelessly to the server, and the server can transmit data
On the doctor's computer, the doctor will be able to diagnose the patient's blood pressure data appropriately.
AMOMCU Open Source Community Denso Technology www.AmoMcu.com focus on Bluetooth BLE development
Technical support and project development cooperation (TEL) 18588220515 QQ11940507 Amo 10
2 1.2.2 Tooth Bluetooth 0 4.0 relationship to traditional Bluetooth
What's the relationship between Smart ready and smart and traditional Bluetooth, see:

☆smart ready can connect and communicate with smart, traditional Bluetooth, and smart.
☆ Traditional Bluetooth can connect and communicate with Smart ready, traditional Bluetooth
☆smart can connect and communicate with smart, smart ready
A lot of customers are more concerned about CC2540 is backward compatible, see should understand, the answer is negative,
CC2540 is a BLE single-mode chip, which belongs to smart, so it can only be connected to smart ready or smart
and communication, CC2540 is incompatible with traditional Bluetooth.
Low power Bluetooth and other Bluetooth compatibility signals

Dual-mode Equipment
1:basicrate (BR), 2:bluetooth low Energy (BLE) supports both BR and ble
The Dual-mode (dual-mode) device, the Smart ready that is discussed here. Smart Ready is Bluetooth 4.0
The main body, generally with stable power supply equipment, such as mobile phones, PCs and so on are two-mode Bluetooth chip.
Many Android phones indicate that Bluetooth 4.0 is supported, but most of them only support the BR in Smart ready, and
Le is not supported in the software.
Currently, the Android4.3 system is only beginning to fully support BLE.
IOS devices support the best for Bluetooth 4.0, as long as the iphone4s+ios7.0 and later devices are perfectly finished
Fully supported Bluetooth 4.0 single-mode device so what's smart, Smart is Bluetooth 4.0 low-power Bluetooth
The trademark is Bluetooth Low energy, abbreviated to LE or BLE, online about Bluetooth 4.0 button
The battery can be used for one year for BLE. Smart ready power consumption is still very large, need to have a stable power
Power supply, such as mobile phones, PC and other devices, and Smart due to low power consumption, the general use of battery, or button battery power.
Ti's CC2540 is the BLE device.
The most important features of Smart are low power consumption and slow rate.

Bluetooth 4.0 Technology