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Gold Science and Technology ›› 2023, Vol. 31 ›› Issue (1): 144-152.doi: 10.11872/j.issn.1005-2518.2023.01.140

• Mining Technology and Mine Management • Previous Articles     Next Articles

Design of Mine Environmental Monitoring System Based on LoRa and IoT Technology

Shengchuan LAN1(),Ganqiang TAO1,Zhiheng FANG2,Qingtian ZENG3,Shiwen WANG3,Zhonghua ZHU1()   

  1. 1.School of Resource Environment and Safety Engineering, University of South China, Changsha 421001, Hunan, China
    2.MCC Changtian International Engineering Co. , Ltd. , Changsha 410205, Hunan, China
    3.Yunnan Diqing Non-ferrous Metals Co. , Ltd. , Shangri -La 674400, Yunnan, China
  • Received:2022-10-10 Revised:2022-12-08 Online:2023-02-28 Published:2023-03-27
  • Contact: Zhonghua ZHU E-mail:20212002210096@stu.usc.edu.cn;zzhnihao545@126.com

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Abstract:

The underground environment of mine is special，and the mining process is often accompanied by toxic and harmful gases.For the collection and transmission of such environmental parameters，the common wireless communication technology has the disadvantages of short communication distance and poor anti-interference.To solve this problem，a mine environment monitoring system based on LoRa and IOT technology was designed to monitor the underground environment in real time and transmit through LoRa modules.The monitoring system includes three parts，namely data collection end，aggregation terminal，and data monitoring platform，and the data monitoring platform includes cloud platform and WeChat applet.The data collection end is paired with environmental multi-sensors and transmits monitoring point data by arranging multiple LoRa relay nodes to achieve longer distance wireless transmission.The aggregation terminal sends the data to the cloud platform through WIFI after processing.The WeChat applet data is obtained by calling the cloud platform data and finally completes the storage and visualization of monitoring data.The test results show that the system is functionally stable，can realize the environmental monitoring function of underground，and it is easy to install，easy to secondary development and no need to line up underground.This study provides a reference for the design of underground environmental monitoring systems in similar mines.This study can improve the mine safety monitoring system and enhance the capacity of mine disaster prevention and emergency rescue.

Key words: mine communications, environmental monitoring, LoRa, Internet of Things, STM32, WeChat applet

CLC Number: 

  • TD76

Fig.1

Overall structure diagram of the system"

Fig.2

Overall hardware block diagram of the system"

Fig.3

MQ-4 sensor circuit"

Fig.4

Monitoring end software design flow chart"

Fig.5

Master software design flow chart"

Fig.6

Surface test sites"

Table 1

Communication quality test results"

组数传输距离/m发送数据包数/个接收数据包数/个丢包率/%
1501001000
21001001000
31501001000
42001001000
5250100991
6300100982
7350100964
8400100964
9450100928
105001008713

Fig.7

Overall system performance verification points"

Fig.8

Real figure"

Table 2

Communication quality test results"

组数传输距离/m发送数据包数/个接收数据包数/个丢包率/%
1501001000
21001001000
31501001000
42001001000
52501001000
63001001000
73501000100
84001000100

Fig.9

WeChat applet monitoring page"

Fig.10

Cloud platform monitoring page"

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