Low Power Design of Universal Environmental Monitoring Node Based on LoRa Technology

Title:Low Power Design of Universal Environmental Monitoring Node Based on LoRa Technology

Authors:Xie Hui, Wang Shuhan, Chen Xiangquan, Guo Jingfu, Dong Yongjun

Abstract

In response to the issues of insufficient compatibility of environmental monitoring wireless sensor network nodes and limited battery capacity, this paper designs a low-power monitoring node compatible with multiple sensors based on LoRa technology. The node provides rich interfaces and standardized packaging at the bottom layer, and uses a structure to store sensor operation information and a linked list to record readable sensors, allowing the node to be compatible with various sensors and solving the sensor adaptation problem. A hardware platform is built using the STM32L series microcontroller and LoRa module, and an adaptive power consumption algorithm for LoRaWAN is proposed. By reasonably configuring the sleep states of each module and optimizing the power consumption for LoRa transmission and idle speed, the lifespan of the node is effectively extended. Experimental results show that this node has good scalability and low power characteristics. The research in this paper can provide certain theoretical methods and technical support for the promotion and application of wireless sensor network nodes in smart agriculture, smart cities, and other fields.

Citation format:Xie Hui, Wang Shuhan, Chen Xiangquan, Guo Jingfu, Dong Yongjun. Low Power Design of Universal Environmental Monitoring Node Based on LoRa Technology. Computer Measurement and Control [J]., 2022, 30(7): 41-48.

Low Power Design of Universal Environmental Monitoring Node Based on LoRa Technology

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