The emergence of Bluetooth low energy has improved the shortcomings of classic Bluetooth, becoming a standard configuration for high-end smart phones, and making up for the gap of classic Bluetooth in smart homes, extending the application to a huge range. BLE Bluetooth + Smart Home makes our lives smarter. So the question is, why can Bluetooth Low Energy do it, but classic Bluetooth doesn't? And look at the characteristics of Bluetooth low energy:
1. The lowest power consumption
To reduce power consumption, Bluetooth low energy devices spend most of their time in sleep mode. When the event occurs, the device will automatically wake up and send a text message to the gateway, smart phone or personal computer. Maximum / peak power consumption does not exceed 15 mA. The power consumption during use is reduced to one tenth of traditional Bluetooth. In applications, a coin cell battery can maintain stable operation for several years.
2. Stability, Security and Reliability
Bluetooth low energy technology uses the same Adaptive Frequency Hopping (AFH) technology as traditional Bluetooth technology, thus ensuring that Bluetooth low energy can maintain stable transmission in "noisy" RF environments in residential, industrial and medical applications. In order 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.
3.Wireless coexistence
Bluetooth technology uses the 2.4GHz ISM band without certification. Because there are too many technologies sharing this radio wave space, the wireless performance will decrease due to error correction and repeated transmission caused by interference (such as 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 can minimize interference from other radio technologies, Bluetooth transmission has excellent stability and reliability.
4.Connection range
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 wireless chipset of 10 milliwatts (Bluetooth Low Energy).
5.Ease of use and integration
Bluetooth low energy piconet is generally based on a master device connected to multiple slave devices. In a piconet, all devices are either masters or slaves, but cannot be masters and slaves at the same time. 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.
Compared with traditional Bluetooth technology, a new feature added by Bluetooth low energy technology is the "broadcast" function. With this feature, the slave can tell it that it needs to send data to the master (broadcast messages include activity or measured values.)
As a low-power Bluetooth module R & D and manufacturer, Shengrun Technology has the corresponding solutions in addition to the low-power Bluetooth module, such as: Bluetooth smart lock, Bluetooth smart light control, Bluetooth electronic cigarette, Bluetooth medical equipment, tire pressure Monitoring, etc ... welcome to CONTACT!
