Integrated mine communication system based on code division multiple access (CDMA) technology

Abstract

The invention discloses an integrated mine communication system based on a code division multiple access (CDMA) technology. According to the system, signal transmission equipment is connected with a CDMA base station for realizing data exchange; a surface scheduling module, the signal transmission equipment, the CDMA base station and a mine near-end signal converter are arranged on the ground; the CDMA base station and the mine near-end signal converter are connected to realize signal conversion; the mine near-end signal converter is respectively connected with multiple underground communication modules through an optical fiber network; the multiple underground communication modules are respectively arranged in a corresponding mine laneway; and each underground communication module comprises at least one mine wireless signal converter used for signal conversion and an intrinsic safety type CDMA voice terminal which is connected with the mine wireless signal converter through a CDMA network. The system can support the voice, data, short message transmitting and scheduling and PTT functions, the network is difficultly offline in the mine laneway working environment, the interference resistance is high, the voice communication effect is good, the underground wireless coverage effect is good, the system can be independently operated, and group customer networking can be realized.

Description

technical field [0001] The invention relates to an integrated mine communication system based on CDMA technology, which belongs to the technical field of mine communication equipment. Background technique [0002] At present, in the existing coal mine safety production information systems and applications, mine communication systems mainly include mine communication systems based on PHS technology, mine communication systems based on WIFI technology and mine communication systems based on TD-SCDMA technology. The mining communication system based on PHS technology is currently the most widely used wireless private network communication solution in coal mines in my country. Due to the equipment replacement problem caused by the PHS de-frequency, the original PHS communication equipment of the enterprise cannot continue on the ground. In addition, mine communication systems based on PHS technology, mine communication systems based on WIFI technology, and mine communication syst...

AI Technical Summary

Problems solved by technology

The mining communication system based on PHS technology is currently the most widely used wireless private network communication solution in coal mines in my country. Due to the equipment replacement problem caused by the PHS de-frequency, the original PHS communication equipment of the enterprise cannot continue on the ground. In addition, mine communication systems based on PHS technology, mine communication systems based on WIFI technology, and mine communication systems based on TD-SCDMA technology require multiple base stations to be deployed underground, and there is a problem of frequent switching between base stations, which is easy At the same time, the wireless signal transmission loss of these communication systems in underground mines is relatively large, the diffraction ability is poor, the anti-interference ability is not strong, the underground coverage effect is not good, and the voice call effect is average in the working environment of mine roadways, and these mine communication systems The system belongs to the island-style networking mode. Outside the coverage area of ​​the private network, the mobile phone of the private network cannot be used, and the application is relatively limited.

Images