Research on Coal Mine Safety Wireless Monitoring System Based on Bluetooth Technology

Abstract

In order to improve the safety of coal mine production and ensure the safe working of production facilities, we propose a wireless monitoring system for coal mine safety called WMS. WMS adopts Bluetooth technology as its transmission protocol according to the coal mine environment. It is designed for collecting environmental parameters of coal mine and running status parameters of important production facilities. It transmits the collected data to the upper computer via wireless network based on Bluetooth. The upper computer receives the collected data and saves them for processing and displaying. Our research shows a new way for monitoring coal mine production and it is really efficient.

High Performance Hybrid Piezoelectric-Electromagnetic Energy Harvester for Scavenging Energy From Low-Frequency Vibration Excitation

“…F P is the restoring force caused by the voltage generated by the PH, and its magnitude is related to the force-voltage factor α and the output voltage V P of the PH, which can be expressed by (1). F E is the restoring force due to the current generated in EH, and its value is related to the force-current factor β and the induced current I E of the induction coil, which can be expressed by (2).…”

“…The safety and reliability of coal mechanical equipment is the foundation to ensure the production efficiency and economic benefits of the coal mine. Employing wireless sensor network [1] to monitor the signal of coal mechanical equipment such as the vibration and temperature in real-time is an effective way to discover the equipment failure. However, there are many difficulties in the power supply of the remote places in the coal mine.…”