Wireless temperature acquisition device based on LoRa technology

Abstract

A wireless temperature acquisition device based on a LoRa technology is used for real-time positioning and temperature and humidity monitoring of cold-chain logistics transportation and mainly comprises a GPS positioning module, an LBS positioning module, a temperature and humidity sensor module, a main control unit, a LoRa communication module, a lithium battery power supply module, a voltage adjusting module, a low-power-consumption management module, a dismounting alarm unit, a storage unit and the like. The LoRa technology has the advantages of being high in signal penetrability, long in transmission distance, low in power consumption, multiple in node, low in cost and flexible in network arrangement mode, a GPS and LBS dual positioning mode is adopted, a local storage unit is arranged, and the problems that in the prior art, independent monitoring of multiple temperature zones cannot be achieved, the signal penetrability is weak, the transmission distance is short, and the problems of no blind spot data supplementary transmission, incapability of storing data when a network or a server fails, non-adjustable data reporting frequency, single positioning mode, incapability of positioning when no GPS signal exists or the GPS signal is weak, and low transmitting intensity and receiving sensitivity are solved.

Description

technical field [0001] The invention relates to the technical field of Internet of Things information collection, in particular to a wireless temperature collection device based on LoRa technology. Background technique [0002] For cold chain logistics transportation, real-time positioning and temperature and humidity monitoring are required throughout the process to ensure the quality of the goods. Existing wireless temperature and humidity collection devices mostly use Bluetooth, WIFI, GSM to transmit signals and GPS positioning. The main problems are: high power consumption and high cost, unable to realize independent monitoring of multiple temperature zones, short transmission distance, and weak signal penetration , No blind spot data retransmission, data cannot be saved when the network or server fails, the frequency of data reporting cannot be adjusted, the positioning method is single, there is no GPS signal or when the GPS signal is weak, it cannot be located, the tr...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a wireless temperature acquisition device based on LoRa technology, which has strong signal penetration, long-distance transmission, low power consumption, multi-node, low cost, and easy deployment. The characteristics of flexible network mode, and the dual positioning method of GPS and LBS is adopted, and the local storage unit is set up to solve the problems existing in the existing technology that cannot realize independent monitoring of multiple temperature zones, weak signal penetration, short transmission distance, and no blind spot data supplementary transmission , When the network or server fails, the data cannot be saved, the data reporting frequency cannot be adjusted, the positioning method is single, there is no GPS signal or the GPS signal cannot be positioned when the GPS signal is weak, and the transmission strength and reception sensitivity are not high.

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