Mine-used vehicle management system based on UWB technology

Abstract

In order to solve the urgent problems such as large dynamic error, inaccurate positioning direction and loss of positioning data in the current positioning process of mine-used vehicles, UWB ultra wideband wireless carrier communication technology is used to comprehensively compare and study TDOA and TOF two time difference positioning methods, and the location of the signal source is accurately calculated by measuring the distance between the signal source and each monitoring point. The results show that when the displacement speed of the signal source is greater than or equal to 7 m/s, through long-distance test verification, the maximum dynamic positioning error of all signal sources is less than the requirements of AQ 6211—2008 standard of 7.3 m. Using TDOA algorithm to determine the position of the measuring point and the measured point, and using TOF algorithm to calculate the distance between the measuring point and the measured point can effectively solve the problems of error, direction and data.

Keywords

• positioning management of coal mine vehicle
• wireless carrier communication
• differential signal
• multi frequency interference
• dynamic error
• multipath effect