Antenna device and method applied to sub-cover shielding condition in tunnel inspection shaft

Abstract

The invention discloses an antenna device and a method applied to the shielding condition of a sub-cover in a tunnel inspection well, comprising: an antenna, an antenna feeder line and a connecting plate; antennas are respectively arranged at both ends of the connecting plate, and the connecting plate The antennas at both ends of the board are collinearly arranged; the antenna feeder is arranged on the connecting board along a direction perpendicular to the antenna, and the assembly of the antenna, the antenna feeder and the connecting board is placed in the tee shell; the present invention is beneficial Effect: pass The design of the antenna and the integrated installation of the antenna and the inner sub-cover can realize the scattering and reflection of the signal in the tunnel environment, thereby breaking through the shielding of the cast iron outer cover, and realizing the communication between the inside and the outside of the tunnel in the presence of the cast iron outer manhole cover shielding Wireless communication enables reliable and stable transmission of information.

Description

technical field [0001] The invention relates to an antenna device, in particular to an antenna device and a method applied to the shielding condition of a sub-cover in a tunnel inspection shaft. Background technique [0002] Power tunnels are generally located in an environment with a depth of 2 or 3 meters underground. At present, antennas in the GSM900MHz frequency band used in tunnel environments mostly use vertical polarization with narrow lobe pointing width and concentrated energy. communication. For tunnel inspection wells, the wellhead is equipped with an outer cast iron manhole cover and an inner sub-cover. The shielding effect of the outer cast iron cover on the antenna signal is obvious, and the simple use of high-gain antennas cannot achieve the shielding purpose of penetrating the cast iron outer cover. [0003] Due to the shielding effect of the outer cast iron manhole cover, the received signal of the wireless signal in the tunnel environment is very weak, w...

AI Technical Summary

Problems solved by technology

The shielding effect of the outer cast iron cover on the antenna signal is obvious, and the simple use of high-gain antennas cannot achieve the purpose of penetrating the shielding of the cast iron outer cover

[0003] Due to the shielding effect of the outer cast iron manhole cover, the received signal of the wireless signal in the tunnel environment is very weak, which often leads to the interruption of the communication between the inner sub-cover in the tunnel and the outside world, and the outside staff cannot automatically obtain the status of the monitoring inner sub-cover. When the manhole cover is lost or damaged, outsiders cannot obtain early warning information through the inner cover, thus losing the monitoring function of the inner cover and the outer manhole cover

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