CN206461627U - A kind of antenna and the integrated radio monitoring device of receiving module - Google Patents
A kind of antenna and the integrated radio monitoring device of receiving module Download PDFInfo
- Publication number
- CN206461627U CN206461627U CN201720216269.2U CN201720216269U CN206461627U CN 206461627 U CN206461627 U CN 206461627U CN 201720216269 U CN201720216269 U CN 201720216269U CN 206461627 U CN206461627 U CN 206461627U
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- receiving module
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- monitoring device
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Abstract
The utility model discloses a kind of antenna and the integrated radio monitoring device of receiving module, the integrated of outdoor unit is realized by using modular construction, the outdoor unit small volume is low in energy consumption, it can be placed on existing radio communication steel tower, realize co-located with mobile communication carrier co-sited；The information transfer received outdoor unit by optical fiber simultaneously is to indoor unit, effectively eliminate feeder loss, expand the coverage of radio monitoring, the especially monitoring range of high band, new generation of wireless pyroelectric monitor network is set up to be large-scale, monitoring coverage is improved and provides strong technical basis.
Description
Technical field
The utility model belongs to radio signal monitoring field, and in particular to one kind reduces feeder loss, especially reduces
High band is lost, and increases the device of radio monitoring coverage.
Background technology
Radio-frequency spectrum is human society and the material base of economic development, is also as a kind of limited natural resources
Constitute the fundamental of modern humans' survival and development.Development and industry control, the increasing of Medical Devices quantity with radio communication cause
Plus, electromagnetic environment is increasingly severe, and in order to protect radio-frequency spectrum safety, country establishes wireless based on fixed monitoring station
Pyroelectric monitor network, when carrying out radio monitoring with this network, reception antenna is generally positioned on special steel tower, and steel tower is with receiving
It is attached between machine by feeder line, it is especially big in high band loss because radio frequency transmission loss is big, therefore the prison of high band
Scope is surveyed relatively small, for example, using 1/2 feeder line, it is assumed that feed line length is 50m, then monitoring model when frequency is 3000MHz
The loss for enclosing 1/200 when covering radius is about 30MHz, i.e. high band is larger, and monitoring coverage is smaller.Therefore, how to subtract
Small feed line length, reduction transmission loss is to expand radio monitoring scope, the key of especially high-end coverage.
Utility model content
The purpose of this utility model is to provide a kind of reduction feeder loss, especially reduces high band loss, increase nothing
The device of line pyroelectric monitor coverage.
The purpose of this utility model is achieved in that including outdoor unit, indoor unit and optical fiber, the outdoor unit
Including monitoring aerial, receiving module and electrooptic conversion module, the indoor unit includes photoelectric conversion module, signal and data
Processing unit, transmission unit and power supply, the monitoring aerial connect receiving module, and the receiving module connects electro-optic conversion mould
Block, the electrooptic conversion module is connected at photoelectric conversion module, the photoelectric conversion module connection signal and data by optical fiber
Unit, signal and data processing unit connection transmission unit are managed, the transmission unit passes through network connection to radio number
According to monitoring center, the power supply is used to power to the modules for respectively constituting outdoor unit and indoor unit.
The receiving module includes radio frequency low-noise amplification module, down conversion module, A/D modular converters and based on FPGA's
Digital signal processing module.
The signal and data processing unit is the computer for being configured with signal processing software and frequency spectrum data processing software.
The transmission unit includes a variety of wireless and/or wire transmission interfaces.
The utility model realizes the integrated of outdoor unit using modular construction, and the outdoor unit small volume is low in energy consumption,
It can be placed on existing radio communication steel tower, realize co-located with mobile communication carrier co-sited；Simultaneously will be outdoor single by optical fiber
The information transfer that member is received effectively eliminates feeder loss to indoor unit, expands the coverage of radio monitoring, especially
It is the monitoring range of high band, is large-scale establishment new generation of wireless pyroelectric monitor network, improves monitoring coverage and provides
Strong technical basis.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1- outdoor units, 2- indoor units, 3- optical fiber, 4- monitoring aerials, 5- receiving modules, 6- electro-optic conversion moulds
Block, 7- photoelectric conversion modules, 8- signal and data processings unit, 9- transmission units, 10- power supplys.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings, but the utility model must not be added in any way
To limit, any changes and modifications made based on the utility model training centre belong to protection domain of the present utility model.
As shown in figure 1, a kind of antenna and the integrated radio monitoring device of receiving module that the utility model is provided, including
Outdoor unit 1, indoor unit 2 and optical fiber 3, the outdoor unit 1 include monitoring aerial 4, receiving module 5 and electro-optic conversion mould
Block 6, the indoor unit 2 includes photoelectric conversion module 7, signal and data processing unit 8, transmission unit 9 and power supply 10, described
Monitoring aerial 4 connects receiving module 5 by sub-miniature A connector, and feed line length can be neglected, eliminate monitoring aerial 4 and receiving module 5 it
Between the feeder loss that produces；The receiving module 5 connects electrooptic conversion module 6, and the electrooptic conversion module 6 is connected by optical fiber 3
Photoelectric conversion module 7 is connect, the transmission range of optical fiber is up to hundreds of meters, eliminated monitoring aerial 4 and receiving module 5 by feeder line
Connection and produce apart from limitation problem；The photoelectric conversion module 7 connection signal and data processing unit 8, the signal with
Data processing unit 8 connect transmission unit 9, the transmission unit 9 by network connection to radio data monitoring center, it is described
Power supply 10 is used to power to the modules for respectively constituting outdoor unit 1 and indoor unit 3.
The receiving module 5 is software radio receiving module, and its composition includes radio frequency low-noise amplification module, down coversion
Module, A/D modular converters and the digital signal processing module based on FPGA.
The signal and data processing unit 8 is the general meter for being configured with signal processing software and frequency spectrum data processing software
Calculation machine, and support photoelectric converting function.
The transmission unit 9 includes a variety of wireless and/or wire transmission interfaces, can easily realize and heterogeneous network
Interconnect.
Embodiment 1
Using software radio receiving module as receiving module 5, with monitoring aerial 4 and the integrated structure of electrooptic conversion module 6
Into outdoor unit 1；There is the computer of interference signal identification and data analysis function using electrooptic conversion module 7, using one
As signal and data processing unit 8, transmission unit 9 and the composition indoor unit 3 of power supply 10, package unit will frequency by 4G networks
Modal data converges to radio data monitoring center.
According to free space loss model, in identical transmission power Pt, transmitter antenna gain (dBi) Gt, receiving antenna gain
Under Gr, transmitting antenna feeder loss Lt, added losses Lx, front end receives power P rh, and low frequency end receiving power Prl is expressed as：
Prh=Pt+Gt+Gr-Lfh-Lt-Lrh-Lx （1）
Prl=Pt+Gt+Gr-Lfl-Lt-Lrl-Lx （2）
The free space loss at high and low frequency end
Lfh=32.4+20lgdh+20lgfh （3）
Lfl=32.4+20lgdl+20lgfl （4）
Dh and dl are respectively the covering radius at high and low frequency end.Assuming that under certain covering radius dh and dl, high frequency and low
Identical Prh=the Prl of receiving power at frequency end, then obtained by (1) and (2)
Lfl-Lfh=Lrh-Lrl （5）
(3) and (4) are substituted into (5) to obtain
20lgdl+20lgfl-20lgdh-20lgfh= Lrh- Lrl
Using 1/2 feeder line, when frequency is 30MHz, every 100 meters of feeder loss is 1.17dB；During 300MHz, feeder line is damaged
Consumption is 3.84dB；During 3000MHz, feeder loss reaches 13.41dB；During 6000MHz, feeder loss reaches 20.05dB.Assuming that feedback
Line length is 50m, and does not consider the influence of radio propagation environment, then frequency 30MHz and 3000MHz transmission loss difference will
Up to 6.12dB, 1/200 when frequency is about 30MHz for 3000MHz monitoring range covering radius, if i.e. 30MHz prison
It is 50 kilometers to survey scope, then during 3000MHz, only 0.25 kilometer；And if feed line length be less than 1 meter, 30MHz and
3000MHz transmission loss difference is only 0.12dB, then the monitoring range covering radius that frequency is 3000MHz is 0.5 kilometer, i.e.,
When feed line length is reduced to 1 meter, monitoring range covering radius during than feed line length for 50m increases one times.
The utility model realizes the integrated of outdoor unit using modular construction, and the outdoor unit small volume is low in energy consumption,
It can be placed on existing radio communication steel tower, realize co-located with mobile communication carrier co-sited；Simultaneously will be outdoor single by optical fiber
The information transfer that member is received effectively eliminates feeder loss to indoor unit, expands the coverage of radio monitoring, especially
It is the monitoring range of high band, is large-scale establishment new generation of wireless pyroelectric monitor network, improves monitoring coverage and provides
Strong technical basis.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to
Above-mentioned embodiment, above-mentioned embodiment be only it is schematical, rather than restricted, this area it is general
Logical technical staff is not departing from the utility model objective and scope of the claimed protection feelings under enlightenment of the present utility model
Under condition, many forms can also be made, this is belonged within protection of the present utility model.
Claims (4)
1. a kind of antenna and the integrated radio monitoring device of receiving module, it is characterised in that including outdoor unit（1）, it is indoor single
Member（2）And optical fiber（3）, it is characterised in that the outdoor unit（1）Including monitoring aerial（4）, receiving module（5）And electric light turns
Change the mold block（6）, the indoor unit（2）Including photoelectric conversion module（7）, signal and data processing unit（8）, transmission unit
（9）And power supply（10）, the monitoring aerial（4）Connect receiving module（5）, the receiving module（5）Connect electrooptic conversion module
（6）, the electrooptic conversion module（6）Pass through optical fiber（3）Connect photoelectric conversion module（7）, the photoelectric conversion module（7）Connection
Signal and data processing unit（8）, the signal and data processing unit（8）Connect transmission unit（9）, the transmission unit
（9）Pass through network connection to radio data monitoring center, the power supply（10）For to respectively constituting outdoor unit（1）And room
Interior unit（2）Modules power.
2. antenna according to claim 1 and the integrated radio monitoring device of receiving module, it is characterised in that described to connect
Receive module（5）At radio frequency low-noise amplification module, down conversion module, A/D modular converters and data signal based on FPGA
Manage module.
3. antenna according to claim 1 and the integrated radio monitoring device of receiving module, it is characterised in that the letter
Number and data processing unit（8）The computer of software is handled to be configured with signal processing software and frequency spectrum data.
4. antenna according to claim 1 and the integrated radio monitoring device of receiving module, it is characterised in that the biography
Defeated unit（9）Including a variety of wireless and/or wire transmission interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720216269.2U CN206461627U (en) | 2017-03-07 | 2017-03-07 | A kind of antenna and the integrated radio monitoring device of receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720216269.2U CN206461627U (en) | 2017-03-07 | 2017-03-07 | A kind of antenna and the integrated radio monitoring device of receiving module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206461627U true CN206461627U (en) | 2017-09-01 |
Family
ID=59691588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720216269.2U Expired - Fee Related CN206461627U (en) | 2017-03-07 | 2017-03-07 | A kind of antenna and the integrated radio monitoring device of receiving module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206461627U (en) |
-
2017
- 2017-03-07 CN CN201720216269.2U patent/CN206461627U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20200307 |
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| CF01 | Termination of patent right due to non-payment of annual fee |