Six features of BLE Bluetooth devices
The emergence of low-power Bluetooth has made up for the vacancy of classic Bluetooth in smart homes. BLE Bluetooth + smart home makes our life smarter. Can you do this for low power consumption? And look at the characteristics of low-power Bluetooth:
1.the lowest power consumption
From shape design to usage, everything is designed with the lowest power consumption. To reduce power consumption, Bluetooth low energy devices spend most of their time in sleep mode. When an activity occurs, the device is automatically woken up and sends a text message to the gateway, PC or smartphone. The maximum/peak power consumption is no more than 15 mA and the average power consumption is approximately 1 microamp. The power consumption during use is reduced to one-tenth of that of traditional Bluetooth. In a less used application, a button cell can maintain stable operation for 5 to 10 years. Low power consumption is applied in all major fields, such as Bluetooth modules manufactured in the cloud, all of which are low power consumption.
2. high cost efficiency and compatibility
To be compatible with traditional Bluetooth technology and cost-effective for small battery-powered devices, there are two chipsets to choose from:
Dual-mode Bluetooth technology with low-power Bluetooth technology and traditional Bluetooth capabilities.
Pure low-power Bluetooth technology optimized for small battery-powered devices with low cost and low power consumption
3. stability, safety and reliability
Low-power Bluetooth technology uses the same adaptive frequency hopping (AFH) technology as traditional Bluetooth technology, ensuring low-power Bluetooth to maintain stable transmission in “noisy” RF environments in residential, industrial and medical applications. To minimize the cost and power consumption of using AFH, Bluetooth low energy technology has reduced the number of channels from 79 1 MHz wide channels of traditional Bluetooth technology to 40 2 MHz wide channels.
4. wireless coexistence
Bluetooth technology, wireless LAN, IEEE 802.15.4/wireless personal area networks, and many proprietary radios use the 2.4 GHz Industrial Scientific Medical (ISM) band without authentication. Due to the excessive number of technologies sharing this radio wave space, wireless performance may be degraded due to error correction and repeated transmission caused by interference (eg, increased delay time and reduced throughput). In demanding applications, interference can be reduced through frequency planning and special antenna designs. Since both traditional Bluetooth and Bluetooth low energy use AFH, a technology that minimizes interference from other radio technologies, Bluetooth transmission has excellent stability and reliability.
5. the scope of connection
The modulation of Bluetooth low energy technology is slightly different from traditional Bluetooth technology. This different modulation achieves a connection range of up to 300 meters with a 10 mW decibel wireless chipset (low power Bluetooth maximum power).
6. Ease of use and integration
Low-power Bluetooth is typically based on a master connected to multiple slaves. All devices are either master or slave, but not both master and slave. The master device controls the communication frequency of the slave device, while the slave device can only communicate according to the requirements of the master device. A new feature added to Bluetooth low energy technology is the "broadcast" feature compared to traditional Bluetooth technology. With this feature, the slave can tell it that it needs to send data to the master. Broadcast messages also include activity or measurements.