With the rapid development of IoT technology, the connection demand of smart devices is also growing. Among the many wireless communication technologies, Bluetooth (BLE) and long-range low-power wireless radio frequency technology (LoRa) have become popular technologies in the field of IoT due to their unique advantages.

BLE is responsible for short-range, high-bandwidth data transmission, while LoRa is good at long-range, low-power communication. The combination of the two not only makes up for the shortcomings of a single technology, but also provides a more flexible connection method for IoT devices. This technology combination has broad application prospects in smart homes, smart cities, industrial automation and other fields.

Ⅰ. Working Principle

The combination of BLE+LoRa is an innovative application based on the complementarity of the two technologies. BLE is responsible for short-range communication between devices, while LoRa is used for long-range data transmission between devices and gateways or servers.

1. Working Principle of BLE

BLE is a short-range, low-power wireless communication technology based on the Bluetooth protocol stack. It is characterized by fast transmission speed and low latency, and is suitable for the transmission of high-bandwidth data such as audio and images. BLE devices usually adopt a star topology, and one central device can connect to multiple peripheral devices.

2. Working Principle of LoRa

LoRa is a long-range, low-power wireless communication technology based on spread spectrum modulation technology. Its communication distance can reach more than 10 kilometers, which is suitable for deployment in wide area networks. LoRa devices usually adopt a star or mesh topology to support the connection of large-scale devices.

3. Collaborative work of BLE+LoRa

In actual applications, BLE is responsible for short-range data collection and transmission between devices, while LoRa transmits data to a remote gateway or server. This collaborative working mode not only ensures the real-time data transmission, but also extends the battery life of the device.

Ⅱ. Application scenarios

The combination of BLE+LoRa brings more possibilities to the application scenarios of the Internet of Things.

1. Smart home

In a smart home, BLE+LoRa can achieve efficient connection between devices. For example, users can control smart bulbs, smart door locks and other devices in their homes through BLE, while LoRa is used to transmit device status data to the cloud for remote monitoring and management

2. Smart City

In the field of smart cities, BLE+LoRa can be used in scenarios such as environmental monitoring, smart transportation, and smart lighting. For example, LoRa sensors can collect data such as air quality, temperature, and humidity in the city, achieve fast communication between devices through BLE, and ultimately transmit the data to the city management center.

3. Industrial Internet of Things

In industrial scenarios, BLE+LoRa can be used for applications such as equipment status monitoring and predictive maintenance. For example, BLE sensors can collect data such as vibration and temperature of equipment in real time, and transmit the data to industrial gateways through LoRa to achieve remote monitoring and analysis of equipment status.

Ⅲ. Comprehensive advantages of BLE+LoRa

1. Low power consumption: BLE and LoRa are both low-power technologies. Their combined use can further reduce the power consumption of devices and extend the battery life of devices.

2. Long-distance transmission: LoRa's long-distance transmission capability enables BLE+LoRa to achieve efficient connection of devices in wide area networks.

3. Flexibility: The combination of BLE+LoRa can meet the communication needs in different scenarios, whether it is short-distance, high-bandwidth data transmission or long-distance, low-power communication.

Product recommendation:

The E104-BT09 series module is developed by Chengdu Yibite Electronic Technology Co., Ltd. based on Tailingwei's TLSR8208BER chip. The module uses general AT commands to set parameters, and the operation is simple and fast. The module supports slave role, Bluetooth broadcast, data transparent transmission, and air configuration. The module can be widely used in smart wearables, home automation, home security, personal health care, smart home appliances, accessories and remote controls, automobiles, lighting, industrial Internet, intelligent data acquisition, intelligent control and other fields. The maximum supported baud rate is 1000000bps.

The combination of BLE+LoRa brings more possibilities to the application scenarios of the Internet of Things. Whether it is smart home, smart city, industrial Internet of Things, or agricultural Internet of Things, BLE+LoRa can provide efficient, low-power and flexible connection solutions. With the continuous growth of the Internet of Things market, the application prospects of BLE+LoRa will be broader.