Multiple Identification System for Coal Miners Entering Well Based on Low Frequency Trigger

Abstract

The multiple identification system for coal miners entering well based on low-frequency trigger is proposed. By combining 2.4 GHz with 125 kHz, the data is transmitted at 2.4 GHz and the signal distance control is realized at 125 kHz. By using low-frequency trigger mechanism to adjust the radio frequency transmission frequency and fast matching of biometric identification, the passing time is shortened. The universal interface of biometric identification is designed to enhance the compatibility of the system, and the system software based on the multi-threading mode of actor model is designed to improve the real-time performance and stability of this system. The test results show that the receiving distance is less than 1 m and the passing time is less than 2 s, which can meet the actual requirements of coal mines.

Keywords

• personnel positioning
• well entry detection
• low-frequency trigger
• radio frequency distance control
• biometric identification
• actor model