With the rapid development of the Internet of Things and low-power electronic devices, air wake-up technology has become the key to optimizing device power consumption and communication efficiency, opening up a new path for low-power, long-lasting wireless communications. Next, let's take a deeper look at this technology and its applications.
1. Analysis of the principle of air wake-up technology
Air wake-up (Wake on Radio, WOR) technology is a communication strategy designed to reduce device power consumption. In traditional communication modes, the receiving end needs to monitor signals at all times, which consumes a lot of energy. The air wake-up technology allows the receiving end to be in a deep sleep state most of the time, and only wakes up in a specific short period to check whether there is a signal.
When the sender wants to transmit data, it will first send a wake-up signal containing a specific preamble. Once the receiver detects the preamble when it wakes up, it will immediately switch from sleep mode to normal working state to receive subsequent data. After the data is received, it quickly returns to deep sleep mode and waits for the next wake-up. This mechanism is like setting an intelligent "work and rest" for the device, resting when there is no task, and responding when there is a task, greatly improving energy efficiency.
2. Our E22 and E32 LoRa modules: Application examples of air wake-up technology
As common low-power wireless communication modules, the E22 and E32 LoRa modules integrate air wake-up technology. In IoT scenarios with low latency requirements such as smart agriculture, industrial remote monitoring, and environmental monitoring, they can operate for a long time in low-power standby mode with air wake-up technology. After receiving the wake-up signal, it can quickly and accurately switch to the working mode to meet the needs of data timing collection and transmission in these scenarios, while reducing equipment energy consumption and maintenance costs. However, due to a certain delay, it is not suitable for scenarios with extremely high requirements for real-time response.
3. Multiple application scenarios of air wake-up technology
Smart agriculture: In soil moisture, temperature monitoring and other equipment, by setting a longer wake-up cycle, the equipment is dormant most of the time, and is awakened when needed to collect and transmit data, ensuring regular data collection while extending battery life and reducing maintenance costs.
Industrial remote monitoring: For scenarios such as large oil storage tank level monitoring in factories and safety monitoring of old building structures, real-time feedback is not required. The module can be awakened regularly in a low-power state to collect and transmit data, reducing wiring costs and energy consumption.
Environmental monitoring: Environmental monitoring equipment such as meteorological monitoring stations and water quality monitoring points do not need to update data too frequently. Air wake-up technology enables the device to run for a long time at low power consumption, wake up and transmit data according to the set cycle, achieve effective monitoring, and do not require frequent battery replacement or external power supply.
Asset tracking: In the tracking of cargo location in logistics transportation and the monitoring of valuable assets, the device intermittently wakes up to obtain location and other information and transmits it, while ensuring the tracking function, reducing device power consumption, extending battery life, and ensuring continuous operation during long-term transportation.
4. Significant advantages of air wake-up technology
Reduce power consumption: Greatly reduce the working time of the receiving end RF, significantly reduce the overall power consumption of the device, which is crucial for battery-powered devices and can extend their battery life.
Ensure communication reliability: The unique preamble code wake-up mechanism ensures that the device is woken up in time when communication is required, accurately receives data, and avoids communication failures caused by signal misjudgment.
Flexibly adapt to different scenarios: Users can adjust the wake-up cycle and sleep time independently according to specific application scenarios and needs to meet the diverse requirements of different devices for power consumption and real-time performance.
With its unique advantages, air wake-up technology has shown great potential in the field of low-power wireless communication. With the continuous advancement of technology, innovative applications are expected to be realized in more fields in the future. If you have any questions about the application of air wake-up technology in actual projects, please feel free to communicate with us.