关键词: 矿用机械设备, 设备状态监测, 无线通信, LoRa, 复合传感器

Abstract: With the advancement of wireless sensor network technology, wireless monitoring systems for equipment status have received more and more attention. Aiming at the existing mining wireless sensor terminals with high power consumption, short communication distance, and poor anti-interference ability of RF signals, a design scheme of mining wireless composite sensors based on LoRa technology is proposed. Selection and design of hardware modules such as control unit and radio frequency unit, as well as software modules such as vibration data acquisition, temperature data acquisition and data transmission Performance test of power consumption, wireless transmission distance and data validity of composite sensors. The test results show that the designed wireless composite sensor has low power consumption, and the wireless transmission distance is better than 600 meters when the packet loss rate is less than 10%. The collected data is truly valid and achieves the design expectations. The research results provide technical support for the wireless monitoring system of mining equipment status.