CN108770000A - Signal trunking method for unmanned plane inspection in electric power raceway groove - Google Patents
Signal trunking method for unmanned plane inspection in electric power raceway groove Download PDFInfo
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- CN108770000A CN108770000A CN201810339122.1A CN201810339122A CN108770000A CN 108770000 A CN108770000 A CN 108770000A CN 201810339122 A CN201810339122 A CN 201810339122A CN 108770000 A CN108770000 A CN 108770000A
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- electric power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The present invention provides the signal trunking methods for unmanned plane inspection in electric power raceway groove, belong to electric inspection process field, the signal trunking method includes determining relay antenna at a distance from electric power ditch road junction according to information source output power and transmission path loss, and trunking plan is chosen in conjunction with pre-determined distance threshold value；When the distributed antenna-feeder system of selection is relayed, determines the main lobe direction distance of antenna, the installation site of antenna is determined according to main lobe direction distance.By calculating the inspection parameter in electric power raceway groove, and then the signal trunking plan of the determining specific location for carrying out including placement power amplifier, to enhance signal quality of the unmanned plane in electric power raceway groove when inspection, improve unmanned plane effectively uses distance, improves the routing inspection efficiency of unmanned plane.
Description
Technical field
The invention belongs to electric inspection process fields, more particularly to are used for the signal relaying side of unmanned plane inspection in electric power raceway groove
Method.
Background technology
It, can be narrow due to the advantage of unmanned plane compact currently when carrying out inspection to the circuit in electric power raceway groove
It shuttles freely in narrow electric power raceway groove.And inspection image can be returned in real time, therefore has used the mode generation of unmanned plane inspection
For previous manual inspection mode.
But electromagnetic environment is extremely complex in electric power raceway groove so that the remote signal and image of unmanned plane, data back
Signal is highly susceptible to interfere, and uses distance to can substantially shorten the effective of unmanned plane, reduces the inspection effect of unmanned plane
Rate.
Invention content
In order to solve shortcoming and defect existing in the prior art, the present invention provides according to the inspection ginseng in electric power raceway groove
Number determines best trunking plan to promote the signal trunking method of unmanned plane signal quality.
In order to reach above-mentioned technical purpose, the present invention provides the signal relaying sides for unmanned plane inspection in electric power raceway groove
Method, the signal trunking method include：
Relay antenna is determined at a distance from electric power ditch road junction according to information source output power and transmission path loss, in conjunction with default
Distance threshold chooses trunking plan；
When choosing distributed antenna-feeder system and being relayed, determine the main lobe direction distance of antenna, according to main lobe direction away from
From the installation site for determining antenna.
Optionally, the signal trunking method further includes：
When selection leakage cable is relayed, obtain between signal feed and to be put first power amplifier
Put distance；
Power amplifier is put according to the distance of putting of acquisition.
Optionally, the distance of putting obtained between signal feed and to be put first power amplifier, including：
Obtain the difference of the transmission power and system requirements covering level of feed；
Obtain difference and blanketing fctor and value, described and value is as revealing cable between signal feed and power amplifier
Loss value；
The quotient for obtaining the loss value and known every meter leakage cable loss factor determines signal feed and waits putting
First power amplifier between put distance.
Optionally, the signal trunking method further includes：
Determine the signal gain of power amplifier.
Optionally, the signal gain of the determining power amplifier, including：
Obtain the difference of system requirements covering level and blanketing fctor；
The signal of power amplifier is determined according to the difference of the output power of the maximum allowable amplifier of single carrier frequency and the difference
Gain.
Optionally, the signal trunking method further includes：
The spacing distance between power amplifier is determined according to the signal gain of power amplifier.
Optionally, the signal gain according to power amplifier determines the spacing distance between power amplifier, including：
The spacing distance between power amplifier is determined according to the quotient of signal gain and every meter of leakage cable loss factor.
Optionally, it is described according to information source output power and transmission path loss determine relay antenna and electric power ditch road junction away from
From, including：
Distance of the relay antenna apart from electric power ditch road junction is determined according to formula one
POUT-LPATH (d)-LCABLE (d)+GANT-RF_B=-85dBm+8dB+5dB formula one,
In formula, POUT expression information source output powers, LPATH (d) first antenna of expression to electric power ditch road junction path loss,
LCABLE (d) indicates that feeder loss, GANT indicate that antenna gain, RF_B indicate the front and back ratio of antenna.
Optionally, the main lobe direction distance of the determining antenna, including：
Antenna main lobe direction coverage distance calculates such as following formula
POUT-LPATH (d1)-LCABLE (d)+GANT=-85dBm+8dB+5dB
In formula, POUT indicates that information source output power, LPATH (d1) indicate that first antenna is damaged to electric power ditch road junction path
Consumption, LCABLE (d) indicate that feeder loss, GANT indicate antenna gain.
Optionally, the combination pre-determined distance threshold value chooses trunking plan, including：
The pre-determined distance threshold value includes first threshold and the second threshold more than first threshold；
When obtained relay antenna is less than first threshold at a distance from electric power ditch road junction, choose distributed antenna-feeder system into
Row relaying；
When obtained relay antenna is not less than first threshold at a distance from electric power ditch road junction and is less than second threshold, choose
Single high-gain or two ordinary antennas being placed in the middle part of electric power raceway groove are relayed；
When obtained relay antenna is not less than second threshold at a distance from electric power ditch road junction, choose in leakage cable progress
After.
The advantageous effect that technical solution provided by the invention is brought is：
By calculating the inspection parameter in electric power raceway groove, and then determine that it includes the tool for placing power amplifier to carry out
The signal trunking plan of body position improves nobody to enhance signal quality of the unmanned plane in electric power raceway groove when inspection
Machine effectively uses distance, improves the routing inspection efficiency of unmanned plane.
Description of the drawings
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical scheme of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the flow diagram provided by the present invention for the signal trunking method of unmanned plane inspection in electric power raceway groove.
Specific implementation mode
To keep structure of the invention and advantage clearer, the structure of the present invention is made further below in conjunction with attached drawing
Description.
Embodiment one
The present invention provides the signal trunking methods for unmanned plane inspection in electric power raceway groove, as shown in Figure 1, the signal
Trunking method includes：
11, relay antenna is determined at a distance from electric power ditch road junction according to information source output power and transmission path loss, in conjunction with
Pre-determined distance threshold value chooses trunking plan；
12, when the distributed antenna-feeder system of selection is relayed, the main lobe direction distance of antenna is determined, according to main lobe direction
Distance determines the installation site of antenna.
In force, structure electric power channel signal covering solution includes：Coaxial distribution antenna-feeder system electric power raceway groove
Signal covers solution, leaky cable systematic electricity channel signal covering solution, optical fiber distributed type antenna-feeder system and solves
Scheme etc..
To specific electric power raceway groove, need to be carried out according to factors such as its length, width, structure, inlet signal levels comprehensive
It closes and considers.After having chosen information source, different antenna-feeder systems is configured according to actual conditions, electric power raceway groove is covered
Lid.
By calculating the inspection parameter in electric power raceway groove, and then determine that it includes the tool for placing power amplifier to carry out
The signal trunking plan of body position improves nobody to enhance signal quality of the unmanned plane in electric power raceway groove when inspection
Machine effectively uses distance, improves the routing inspection efficiency of unmanned plane.
Optionally, the signal trunking method further includes：
When selection leakage cable is relayed, obtain between signal feed and to be put first power amplifier
Put distance；
Power amplifier is put according to the distance of putting of acquisition.
In force, electric power raceway groove covering is carried out using leaky cable, is a kind of more commonly used method, this method
It is advantageous in that：Signal shade can be reduced and blocked, spaced antenna, mobile phone and certain certain day are used in complicated electric power raceway groove
It may be blocked between line, cause to cover bad；Signal fluctuation range is reduced, compared with other antenna systems, electric power ditch
Signal covering is uniform in road；To a variety of services while covering can be provided, leaky cable is substantially broadband system, a variety of different
Wireless system can share same leaky cable, it is contemplated that in electric power raceway groove commonly using certain wireless systems (paging system,
Warning system, broadcast etc.), using the method for sharing a leaky cable, the engineering for setting up a plurality of antenna can be saved.
When carrying out the covering of electric power raceway groove using leaky cable, following factor is considered：Blanketing fctor, information source and first
Distance, the quantity of power amplifier between the distance between power amplifier, the gain of power amplifier, power amplifier.
Optionally, the distance of putting obtained between signal feed and to be put first power amplifier, including：
Obtain the difference of the transmission power and system requirements covering level of feed；
Obtain difference and blanketing fctor and value, described and value is as revealing cable between signal feed and power amplifier
Loss value；
The quotient for obtaining the loss value and known every meter leakage cable loss factor determines signal feed and waits putting
First power amplifier between put distance.
In force, blanketing fctor Losscoup refers to other than 2 meters of leaky cable (vertical direction of leaky cable)
Loss value, which includes the coupling loss of leaky cable and the protection value of the covering measures of requirement.Such as to ensure 90%
Covering measures then will Carrier Requirements cover level on plus 8dB protection values.It is directly designated in some leaky cable specifications
Covering measures are the coupling loss of how many when.Blanketing fctor is determined by coupling loss, carrier frequency number, covering measures and electric power channel type
It is fixed.
After the definition of blanketing fctor is determined, it is thus necessary to determine that the practical placement position of a power amplifier.Base first
It carries out seeking difference operation with system requirements covering level in the transmission power Pin of feed, according to obtained difference and known covering
The factor is summed, and obtain and value is that the loss value of leakage cable to be used is needed between signal feed and power amplifier.
And then removed according to the loss of loss value and every meter of leakage cable, obtained quotient is that power amplifier is presented with signal
The distance between point is worth, that is, the position that power amplifier should actually be put.
Optionally, the signal trunking method further includes：
Determine the signal gain of power amplifier.
In force, the signal gain of power amplifier is specifically determined, including：
Obtain the difference of system requirements covering level and blanketing fctor；
The signal of power amplifier is determined according to the difference of the output power of the maximum allowable amplifier of single carrier frequency and the difference
Gain.
In force, the output power of the maximum allowable amplifier of the mono- carrier frequency of amplifier gain G=needed (depends on carrier frequency
Quantity)-(system requirements covers level-blanketing fctor)
The maximum allowable transmission power of every carrier frequency of power amplifier is related with the carrier frequency number being amplified on leaky cable.This is mainly
Consider that reducing intermodulation influences.
Optionally, the signal trunking method further includes：
The spacing distance between power amplifier is determined according to the signal gain of power amplifier.
In force, power amplifier is specifically determined according to signal gain and the quotient of every meter of leakage cable loss factor
Between spacing distance.
According to power amplifier gain we can simply estimate distance d=G/ between power amplifier (every meter of loss of leaky cable).As a result, may be used
To estimate the quantity that required covering electric power raceway groove needs power amplifier.Above-mentioned analysis, which is established, just to be compensated the last period in power amplifier gain and lets out
Under the premise of leaking cable loss.
Leaky cable when mounted cannot contacting metal object.It is general when requiring installation apart from 5 centimetres of concrete wall, away from
At least 10 centimetres from metal wall.Moreover, the installation of leaky cable is as close to the area of coverage.
Optionally, it is described according to information source output power and transmission path loss determine relay antenna and electric power ditch road junction away from
From, including：
Distance of the relay antenna apart from electric power ditch road junction is determined according to formula one
POUT-LPATH (d)-LCABLE (d)+GANT-RF_B=-85dBm+8dB+5dB formula one,
In formula, POUT expression information source output powers, LPATH (d) first antenna of expression to electric power ditch road junction path loss,
LCABLE (d) indicates that feeder loss, GANT indicate that antenna gain, RF_B indicate the front and back ratio of antenna.
In force,
Calculate about 100 meters of antenna distance electric power ditch road junction can be met the requirements.
Optionally, the main lobe direction distance of the determining antenna, including：
Antenna main lobe direction coverage distance calculates such as following formula
POUT-LPATH (d1)-LCABLE (d)+GANT=-85dBm+8dB+5dB
In formula, POUT indicates that information source output power, LPATH (d1) indicate that first antenna is damaged to electric power ditch road junction path
Consumption, LCABLE (d) indicate that feeder loss, GANT indicate antenna gain.
In force, about 430 meters of antenna main lobe coverage distance is calculated to obtain by above formula.If antenna is placed on electric power raceway groove
Mouthful, then antenna can cover about 720 meters.Covering aerial position should be as close to information source；The overburden depth of foundation antenna backlobe,
It is contemplated that information source is installed on inside electric power raceway groove.
Optionally, the combination pre-determined distance threshold value chooses trunking plan, including：
The pre-determined distance threshold value includes first threshold and the second threshold more than first threshold；
When obtained relay antenna is less than first threshold at a distance from electric power ditch road junction, choose distributed antenna-feeder system into
Row relaying；
When obtained relay antenna is not less than first threshold at a distance from electric power ditch road junction and is less than second threshold, choose
Single high-gain or two ordinary antennas being placed in the middle part of electric power raceway groove are relayed；
When obtained relay antenna is not less than second threshold at a distance from electric power ditch road junction, choose in leakage cable progress
After.
In force, it is as follows to cover specific solution for different length electric power raceway groove：
1) short electric power raceway groove covers solution
For 200 meters of short electric power raceway grooves below, it is proposed that be placed on electric power ditch road junction using individual antenna, information source is selected straight
Put station.
2) moderate-length electric power raceway groove covers solution
For 200 meters or more, 500 meters of electric power raceway grooves below.According to the design feature of electric power raceway groove,
Single high-gain aerial can be used, or is positioned among electric power raceway groove and is covered using two antennas.Especially
Its electric power channel memory cell is positioned over corner to be covered using using two antennas as far as possible in bend.In view of applying
Work difficulty, information source select optical fiber repeater as far as possible.When optical fiber repeater selects in order to reduce system cost, aerial coupling is selected
Box-like optical fiber repeater is preferred.
3) the more bend electric power raceway grooves of long length cover solution
For 500 meters or more of electric power raceway groove.Can select leaky cable or point to multi--point optical fiber repeater come into
Row covering.
The present invention provides the signal trunking method for unmanned plane inspection in electric power raceway groove, the signal trunking method packet
It includes and relay antenna is determined at a distance from electric power ditch road junction according to information source output power and transmission path loss, in conjunction with pre-determined distance threshold
Value chooses trunking plan；When the distributed antenna-feeder system of selection is relayed, the main lobe direction distance of antenna is determined, according to main lobe
Direction distance determines the installation site of antenna.By calculating the inspection parameter in electric power raceway groove, and then determination is wrapped
The signal trunking plan for including the specific location for placing power amplifier, to enhance unmanned plane in electric power raceway groove when inspection
Signal quality, improve unmanned plane effectively uses distance, improves the routing inspection efficiency of unmanned plane.
Each serial number in above-described embodiment is for illustration only, the assembling for not representing each component or the elder generation during use
Sequence afterwards.
Example the above is only the implementation of the present invention is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. the signal trunking method for unmanned plane inspection in electric power raceway groove, which is characterized in that the signal trunking method includes：
Relay antenna is determined at a distance from electric power ditch road junction according to information source output power and transmission path loss, in conjunction with pre-determined distance
Threshold value chooses trunking plan；
When the distributed antenna-feeder system of selection is relayed, the main lobe direction distance of antenna is determined, really according to main lobe direction distance
Determine the installation site of antenna.
2. the signal trunking method according to claim 1 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
Stating signal trunking method further includes：
When selection leakage cable is relayed, putting between signal feed and to be put first power amplifier is obtained
Distance；
Power amplifier is put according to the distance of putting of acquisition.
3. the signal trunking method according to claim 2 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
The distance of putting obtained between signal feed and to be put first power amplifier is stated, including：
Obtain the difference of the transmission power and system requirements covering level of feed；
Obtain difference and blanketing fctor and value, damage of the described and value as leakage cable between signal feed and power amplifier
Consumption value；
The quotient for obtaining the loss value and known every meter leakage cable loss factor determines signal feed and to be put the
Distance is put between one power amplifier.
4. the signal trunking method according to claim 2 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
Stating signal trunking method further includes：
Determine the signal gain of power amplifier.
5. the signal trunking method according to claim 4 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
The signal gain of determining power amplifier is stated, including：
Obtain the difference of system requirements covering level and blanketing fctor；
The signal gain of power amplifier is determined according to the difference of the output power of the maximum allowable amplifier of single carrier frequency and the difference.
6. the signal trunking method according to claim 4 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
Stating signal trunking method further includes：
The spacing distance between power amplifier is determined according to the signal gain of power amplifier.
7. the signal trunking method according to claim 6 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
It states and spacing distance between power amplifier is determined according to the signal gain of power amplifier, including：
The spacing distance between power amplifier is determined according to the quotient of signal gain and every meter of leakage cable loss factor.
8. the signal trunking method according to any one of claims 1 to 7 for unmanned plane inspection in electric power raceway groove, special
Sign is, described to determine relay antenna at a distance from electric power ditch road junction according to information source output power and transmission path loss, including：
Distance of the relay antenna apart from electric power ditch road junction is determined according to formula one
POUT-LPATH (d)-LCABLE (d)+GANT-RF_B=-85dBm+8dB+5dB formula one,
In formula, POUT expression information source output powers, LPATH (d) first antenna of expression to electric power ditch road junction path loss,
LCABLE (d) indicates that feeder loss, GANT indicate that antenna gain, RF_B indicate the front and back ratio of antenna.
9. the signal trunking method according to claim 8 for unmanned plane inspection in electric power raceway groove, which is characterized in that institute
The main lobe direction distance of determining antenna is stated, including：
Antenna main lobe direction coverage distance calculates such as following formula
POUT-LPATH (d1)-LCABLE (d)+GANT=-85dBm+8dB+5dB
In formula, POUT expression information source output powers, LPATH (d1) first antenna of expression to electric power ditch road junction path loss,
LCABLE (d) indicates that feeder loss, GANT indicate antenna gain.
10. the signal trunking method according to any one of claims 1 to 7 for unmanned plane inspection in electric power raceway groove,
It being characterized in that, the combination pre-determined distance threshold value chooses trunking plan, including：
The pre-determined distance threshold value includes first threshold and the second threshold more than first threshold；
When obtained relay antenna is less than first threshold at a distance from electric power ditch road junction, choose in distributed antenna-feeder system progress
After；
When obtained relay antenna is not less than first threshold at a distance from electric power ditch road junction and is less than second threshold, choose single
High-gain or two ordinary antennas being placed in the middle part of electric power raceway groove are relayed；
When obtained relay antenna is not less than second threshold at a distance from electric power ditch road junction, chooses leakage cable and relayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339122.1A CN108770000A (en) | 2018-04-16 | 2018-04-16 | Signal trunking method for unmanned plane inspection in electric power raceway groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810339122.1A CN108770000A (en) | 2018-04-16 | 2018-04-16 | Signal trunking method for unmanned plane inspection in electric power raceway groove |
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| Publication Number | Publication Date |
|---|---|
| CN108770000A true CN108770000A (en) | 2018-11-06 |
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ID=64010923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810339122.1A Pending CN108770000A (en) | 2018-04-16 | 2018-04-16 | Signal trunking method for unmanned plane inspection in electric power raceway groove |
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| CN104994526A (en) * | 2015-06-23 | 2015-10-21 | 上海方库信息科技有限公司 | Method for measuring azimuth angle of mobile communication base station antenna |
| CN106054146A (en) * | 2016-07-04 | 2016-10-26 | 西安电子科技大学 | On-plane active blanket jamming application method for aiming at multi-station cooperated main lobe jamming prevention |
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Application publication date: 20181106 |