Abstract

In order to ensure the quality of tobacco products, it is necessary to strictly control the environment of tobacco during storage. In order to save manpower and material resources and realize accurate monitoring of the storage environment, a large-scale tobacco storage monitoring system based on heterogeneous network was designed. Combining the cross-regional characteristics of NB-IoT and low-frequency characteristics of LoRa, NB-IoT was used as a wide area network and LoRa as a subordinate local area network to form a two-layer network structure. Its structure includes sensor node and gateway node, and the gateway node is composed of LoRa gateway and NB-IoT module. This paper introduces the composition and working mode of each part in detail.

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