Radio communication system for mine personal handphone system

Abstract

This invention discloses a Xiaolingtong radio communication system used in mines including an underground communication sub-system including two parts of underground equipments and ground equipments, in which, the underground equipments include a base station controller, a base station, a supply, an optical end machine and cell phones, the ground equipments include an optical end machine, a supply and local devices, the base station controller is connected with each base station via its interface plates and supplies to them, the controller is connected with the local devices via the optical end machine and the ground optical end machine, which can not only finish free talk among cell phones in the system independently to realize the free talk among cell phones in the whole mine region butalso realizes the free talk of commercial and long distance talk so as to realize mobile communications between that of mines and the social public networks.

Description

Technical field [0001] The invention relates to a mine communication system, specifically a mine PHS wireless communication system. Background technique [0002] With the advancement of mine modern mining technology and the needs of production development, more and more mobile or semi-mobile production equipment and mobile jobs, as well as a large number of random information flows that reflect the front line of production are urgently needed. It needs to be incorporated into the command and decision-making of mine production scheduling. From the perspective of safety and production, improving mine communication and adapting it to current mine production development and safety requirements has always been one of the urgent problems to be solved in mine production. Because radio waves cannot propagate well in mines, a pair of communicators that can communicate normally for more than 10 kilometers on the ground has a communication distance of less than 200 meters underground....

AI Technical Summary

Problems solved by technology

Because radio waves cannot propagate well in mines, a pair of communicators that can communicate normally for more than 10 kilometers on the ground has a communication distance of less than 200 meters underground. Moreover, the problem of electromagnetic wave propagation involved in underground wireless communications is too complicated Therefore, the mine wireless communication field is a special field of mobile communication. Before the end of the 1960s, almost no one explored the topic of electromagnetic wave propagation in mines.

But the existing downhole leakage communication system still has the following deficiencies: the one is that the environmental electromagnetic interference is large (even if the operating frequency is high, the influence caused by the strong electromagnetic interference produced by electric equipment such as underground electric locomotives cannot be avoided), and when serious Affect the call quality or the continuity of the call; Second, the communication coverage is small

The longer the cable, the more repeaters are required, and the signal noise mainly generated by the repeaters will accumulate more seriously, resulting in poor communication quality, so its coverage is limited; the third is that the equipment is heavy, bulky, There are few functions; the fourth is poor after-sales service guarantee (because all the system equipment is dedicated equipment, its after-sales service system obviously cannot achieve maintenance and service socialization like social public network equipment)

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