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Underground space passive relay communication system

A passive relay and underground space technology, applied in the field of communication, can solve problems such as difficult management and maintenance, increased project investment, complex networking, etc., and achieve the effects of reduced equipment investment, easy installation and maintenance, and simple circuit structure

Inactive Publication Date: 2005-01-05
HEBEI FAREAST COMM SYST ENG +1
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Problems solved by technology

[0002] In underground space wireless communication, such as subway communication, mine communication, underground parking lot, tunnel and other occasions, the communication equipment commonly used at home and abroad is leaky cable plus active repeater, which is mainly composed of leaky cable, active direct amplifier , power supply system and network management system constitute an active relay communication system. This equipment has the following disadvantages: First, the investment is too large. About 10,000 yuan, taking the subway with a station distance of 2 kilometers as an example, its usual configuration is at least 4 kilometers of leaky cables and four active repeaters, at least 1 million yuan
The second is that this method is complicated to form a network, and a network management system needs to be equipped, and capital investment is required
The third is that its management and maintenance are difficult. In some underground spaces, such as the subway, it is not allowed to enter and repair during the operation of the train. It can only be arranged at night when the operation is out of service. Large investment in engineering

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Embodiment Construction

[0014] refer to figure 1 , figure 2 , the present invention includes a fixed communication base station 1, a power splitter combiner 2, a fixed passive repeater 3, a mobile passive repeater 4, a mobile communication base station 5, and a low-loss cable 6. Embodiment The present invention presses figure 1 Connect the lines. Its function of fixed communication base station 1 and mobile communication base station 5 is to send or receive communication signal, embodiment is example by railway tunnel communication, fixed communication base station 1 adopts the existing fixed communication base station on the platform, mobile communication base station 5 adopts on the locomotive platform Existing mobile communication base stations. The fixed communication base station 1 transmits the sending signal to the power splitter combiner 2 through the low-loss cable 6 , or receives the communication signal synthesized by the power splitter combiner 2 . The power splitter combiner 2 divid...

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Abstract

This invention discloses an underground space passive relay communication system compose of a fixed or mobile communication base station, a passive relay unit, a power distribution / synthesizer and a low loss cable which mounts a passive relay in tunnel / and locomotive at the same time to utilize the effective space of the tunnel based on the relations between medium waveguide wave section to realize communication in tunnel with the least transmission loss.

Description

technical field [0001] The invention relates to an underground space passive relay communication system in the field of communication, and is especially suitable for relay communication in subways, mines, tunnels, underground parking lots and other places. Background technique [0002] In underground space wireless communication, such as subway communication, mine communication, underground parking lot, tunnel and other occasions, the communication equipment commonly used at home and abroad is leaky cable plus active repeater, which is mainly composed of leaky cable, active direct amplifier , power supply system and network management system constitute an active relay communication system. This equipment has the following disadvantages: First, the investment is too large. About 10,000 yuan, taking the subway with a station distance of 2 kilometers as an example, its usual configuration is at least 4 kilometers of leaky cables and four active repeaters, at least 1 million yua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/145
Inventor 吴蔚英杨为华成传湘
Owner HEBEI FAREAST COMM SYST ENG
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