Method and system for precisely positioning mine

Abstract

The invention discloses a method and system for precisely positioning a mine. The method for precisely positioning the mine comprises the steps that a plurality of positioning base stations and a plurality of marking cards which are used for positioning and are communicated with the positioning base stations through the wireless technology are arranged; distance data are calculated by measuring time spent by signals sent by the positioning base stations flying to the marking cards or the distance data are measured by measuring the time spent by signals sent by the marking cards flying to the positioning base stations; directed wireless antennas are arranged in roadway directions according to the roadway position of the positioning base stations under a coal mine well, the direction information of the positioning cards relative to the positioning base stations is calculated by obtaining antenna information used for communication between the positioning base stations and the positioning cards, and therefore the precise positions of the marking cards are obtained, and precise positioning is achieved. The method for precisely positioning the mine can be implemented under the condition that positioning auxiliary base stations are not required to be deployed, cost is reduced, engineering installation and deployment difficulty are greatly simplified, and time synchronization of the positioning base stations and the marking cards is not needed.

Description

technical field [0001] The invention belongs to the technical field of position positioning, and relates to a positioning system, in particular to a method for precise positioning of a mine; at the same time, the invention also relates to a precise positioning system of a mine. Background technique [0002] As a heavy industry with frequent safety accidents, mine mining has high requirements for safety supervision and management systems. The position monitoring of mine personnel plays a pivotal role in mine production management, safety decision-making, emergency rescue and disaster relief, etc. At present, the mine position monitoring system put into use in China generally only supports the query and statistics of the area where underground personnel and equipment are located, and the area positioning coverage radius ranges from 15 to 300m. Due to the inability to provide accurate and real-time location information, once an emergency disaster occurs in the mine, the existi...

AI Technical Summary

Problems solved by technology

[0004] The outstanding problem of the above scheme is that the positioning main base station and auxiliary base station must be deployed at the same time to accurately locate the position of the positioning card, which not only increases the cost of the system, but also increases the difficulty of engineering construction, wiring and system maintenance

At the same time, for the three-fork roadway and multi-fork roadway existing in the coal mine, the auxiliary positioning base station cannot judge the direction of the positioning card

In addition, the above scheme is to measure the propagation delay time t1 (TOF, Time Of Flight) of the wireless signal between the positioning base station and the positioning card, and then calculate the propagation delay time t1 by multiplying the propagation delay time t1 of the electromagnetic wave in the air according to the propagation speed c of the electromagnetic wave in the air. The distance between the positioning base station and the positioning card can be obtained by the propagation speed c in the medium, which requires extremely strict time synchronization between the positioning base station and the marking card. Strict time synchronization requires the addition of expensive electronic components. greatly increased the cost

Images