Gong-kuang zidonghua (Jun 2021)
Design of multifunctional miner lamp based on LoRa and RT-Thread
Abstract
In order to solve the problems of single function, short wireless communication distance and high power consumption of current miner lamp, a multifunctional miner lamp based on LoRa wireless communication technology and the Internet of things operating system RT-Thread is designed. The lamp integrates the functions of mine lighting, environmental status sensing, personnel status monitoring and positioning, and wireless communication and safety alarm. The miner lamp uses STM32 microcontroller as the core, uses a variety of sensors to realize real-time perception of environmental temperature and humidity, gas concentration and personnel movement status information. The miner lamp uses long-distance low-power LoRa wireless communication technology, combined with LoRa intelligent gateway, to realize information interaction with the ground remote monitoring platform. The multifunctional miner lamp can also carry out local abnormal status early warning and remote reporting to the monitoring platform. At the same time, the monitoring platform can send safety early warning information and release the safety status of the working face to miners timely. The test results show that the miner lamp has high data acquisition accuracy, good wireless communication performance and low power consumption. Under the condition of multifunctional implementation, the miner lamp can measure environmental parameters effectively through a variety of sensors, and the measurement error is less than 1%. The maximum packet loss rate is less than 4% and the maximum time delay is less than 100 ms through the data interaction between the intelligent gateway and the monitoring platform. When the miner lamp is in standby mode, the lowest average current consumption is less than 10 μA, which can extend the service time of the miner lamp effectively.
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