CN205809282U - A kind of beacon transmission device - Google Patents
A kind of beacon transmission device Download PDFInfo
- Publication number
- CN205809282U CN205809282U CN201620685453.7U CN201620685453U CN205809282U CN 205809282 U CN205809282 U CN 205809282U CN 201620685453 U CN201620685453 U CN 201620685453U CN 205809282 U CN205809282 U CN 205809282U
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- beacon
- transmission device
- switch
- beacon transmission
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Abstract
This utility model belongs to location and navigation technology field, disclose a kind of beacon transmission device and a kind of unmanned plane search system, wherein, include at this beacon transmission device: multi-disc microstrip antenna and a beacon emissions module, multi-disc microstrip antenna electrically connects with beacon emissions module respectively；Beacon emissions module includes: single pole multiple throw, beacon signal source, radio frequency amplifier, control chip, on and off switch, power supply and gravitational accelerometer, wherein, single pole multiple throw electrically connects with multi-disc microstrip antenna and on and off switch respectively, radio frequency amplifier electrically connects with single pole multiple throw and on and off switch respectively, beacon signal source electrically connects with radio frequency amplifier, on and off switch and control chip respectively, control chip electrically connects with on and off switch, power supply and gravitational accelerometer respectively, and power supply electrically connects with on and off switch and gravitational accelerometer respectively.This system is simple, degree of accuracy is high, and need not rely upon the external conditions such as GPS.
Description
Technical field
This utility model belongs to location and navigation technology field, particularly relates to a kind of beacon transmission device and a kind of unmanned plane is searched
Cable system.
Background technology
At present, the unmanned vehicle used on the market, as model airplane, toy models, for Aerial photography, explore and resist
The shake disaster relief etc. realizes the mode of location navigation and typically all builds on manual control and GPS(Global Positioning
System, global positioning system) navigation.It is to be arranged on the gps signal receiver module above unmanned vehicle as gps signal
Receiving terminal, carrys out the information such as the position of positioning aircraft, flight speed with this by its gps satellite signal received.
Unmanned vehicle to be realized safely and accurately positions or navigates, it is necessary to ensure that gps signal receiver module connects in real time
The satellite-signal received is enough good and accurate.But, at some such as mountain area, building, highway or other gps signal blind areas,
Gps signal receiver module cannot be accurately received gps satellite signal.So, will result in unmanned vehicle just cannot realize
Normal location or navigation, even can make unmanned vehicle state of flight in flight course out of control, from damage of falling from high altitude.
Certainly, also other technologies are capable of the navigation of unmanned vehicle, and such as image auxiliary positioning navigation system, it needs
Want to store in the system of unmanned plane in advance topographic(al) data, by the landform of the three-dimensional land map of unmanned plane captured in real-time Yu storage
Source map does associative operation, thus realizes the location of unmanned plane.This mode is only applicable to unmanned plane in known specific region
Location navigation task with position.It can be seen that one is capable of being accurately positioned, needs not rely on external condition and can be achieved with
The alignment system of purpose becomes a kind of demand.
Utility model content
For the problems referred to above, this utility model aims to provide a kind of beacon transmission device and a kind of unmanned plane search system,
Efficiently solve the problem that existing unmanned plane search precision is the highest.
The technical scheme that this utility model provides is as follows:
A kind of beacon transmission device, including: multi-disc microstrip antenna and a beacon emissions module, described multi-disc microstrip antenna divides
Do not electrically connect with described beacon emissions module；
Described beacon emissions module includes: single pole multiple throw, beacon signal source, radio frequency amplifier, control chip, electricity
Source switch, power supply and gravitational accelerometer, wherein, described single pole multiple throw respectively with described multi-disc microstrip antenna and power supply
Switch electrical connection, described radio frequency amplifier electrically connects with described single pole multiple throw and on and off switch respectively, described beacon signal
Source electrically connects with described radio frequency amplifier, on and off switch and control chip respectively, described control chip respectively with described power supply
Switch, power supply and gravitational accelerometer electrical connection, described power supply is electrically connected with described on and off switch and gravitational accelerometer respectively
Connect.
It is further preferred that described microstrip antenna includes a conductor patch, a medium substrate and an earth plate, described
Conductor patch and described earth plate are separately positioned on the both sides of described medium substrate.
It is further preferred that the profile of described beacon transmission device is cubic, and it includes 6 microstrip antennas, institute
State 6 microstrip antennas and be respectively arranged in each surface of described beacon transmission device；Described single pole multiple throw is that hilted broadsword six is thrown
Switch.
It is further preferred that described beacon signal source includes derived reference signal and the frequency synthesizer being electrically connected to each other.
It is further preferred that described acceleration of gravity is calculated as 3 axle gravitational accelerometer.
This utility model additionally provides a kind of unmanned plane search system, and this unmanned plane search system includes that above-mentioned beacon is sent out
Injection device, also includes the beacon reception device being arranged in unmanned plane.
Described unmanned plane searcher includes: reception antenna, low-noise amplifier and beacon receiver, wherein, and institute
Stating low-noise amplifier to electrically connect with described reception antenna, described beacon receiver electrically connects with described low-noise amplifier.
Beacon transmission device and unmanned plane that this utility model provides search for system, and it has the beneficial effects that:
The unmanned plane provided at this utility model searches for system by beacon transmission device and unmanned plane searcher two parts
Composition, wherein, beacon transmission device is installed on object, and unmanned plane searcher is arranged in unmanned plane or hand-held.This
Sample, as long as the object impelling being mounted with beacon transmission device being gone out, just accurately can be searched for by unmanned plane searcher
To object location, system is simple, degree of accuracy is high, and need not rely upon the external conditions such as GPS.
It addition, be respectively provided with microstrip antenna in all directions of the beacon transmission device of this utility model offer, so,
Beacon transmission device can omnibearing be scanned for by unmanned plane searcher, substantially increases the search precision of system.?
After, in unmanned plane is searched for, it is provided with azimuth indicator and UAV Communication system, as such, it is possible to see object institute the most intuitively
The orientation at place, and the related data of the object searched is sent by UAV Communication system.
Accompanying drawing explanation
Fig. 1 is the hardware block diagram of beacon transmission device in this utility model；
Fig. 2 is micro-strip wire structure schematic diagram in this utility model；
Fig. 3 is the parameters simulation curve of microstrip antenna in this utility model specific embodiment；
Fig. 4 is microstrip antenna directional diagram in this utility model specific embodiment；
Fig. 5 is unmanned plane searcher hardware block diagram in this utility model；
Reference:
100-beacon transmission device, six microstrip antennas of 110-, 120-beacon emissions module, 121-hilted broadsword six throw switch,
122-beacon signal source, 123-radio frequency amplifier, 124-control chip, 125-on and off switch, 126-gravitational accelerometer, 127-
Power supply, 111-conductor patch, 112-medium substrate, 113-earth plate, 200-unmanned plane searcher, 210-reception antenna,
220-low-noise amplifier, 230-beacon receiver.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, this utility model is described in further detail.It should be noted that
Specific detail of the present utility model described below is only explanation this utility model use, is not intended that limit of the present utility model
System.Any amendment made according to described teaching of the present utility model and modification are also in the range of this utility model.
It is illustrated in figure 1 the beacon transmission device hardware block diagram that this utility model provides, it can be seen that at this letter
Mark discharger 100 includes including microstrip antenna 1, micro-strip sky during the multi-disc microstrip antenna 110(being electrically connected to each other is as shown
Line 2 ..., microstrip antenna n) and beacon transmission device 120, multi-disc microstrip antenna electrically connects with beacon transmission device respectively.
Specifically, this beacon transmission device 120 includes: single pole multiple throw 121, beacon signal source 122, radio frequency amplifier
123, control chip 124, on and off switch 125, power supply 127 and gravitational accelerometer 126, wherein, single pole multiple throw is respectively
Electrically connecting with multi-disc microstrip antenna and on and off switch, radio frequency amplifier electrically connects with single pole multiple throw and on and off switch respectively,
Beacon signal source electrically connects with radio frequency amplifier, on and off switch and control chip respectively, control chip respectively with on and off switch,
Power supply and gravitational accelerometer electrical connection, power supply electrically connects with on and off switch and gravitational accelerometer respectively.
In a specific embodiment, the profile of beacon transmission device is stereo structure, including: six microstrip antennas 110, should
Six microstrip antennas electrically connect with beacon emissions module respectively, and are respectively arranged on each surface of beacon transmission device, greatly
Little with beacon transmission device form fit.Based on this, the single pole multiple throw 121 in this beacon emissions module 120 is hilted broadsword
Six throw switches.Beacon signal source is for producing the microwave signal of 2.6GHz.
Here why we select 2.6GHz(good omen) the operating frequency that frequency is beacon transmission device, reason exists
In: according to the restriction of communication distance between beacon transmission device and unmanned plane searcher (if unmanned plane searcher is arranged at
In unmanned plane, communication distance between the two is more than 5km(km)；If unmanned plane searcher is hand-held, the most between the two logical
Communication distance be more than 1km) and the handling characteristics of beacon transmission device/unmanned plane searcher and need in actual applications by
On antenna beacon transmission device to be arranged on, this antenna wants impact resistance to shake simultaneously, and beacon transmission device arbitrary face to be worked as
Microwave signal can be emitted behind ground, therefore antenna is chosen to be the micro-strip sky of double-side copper-applying glass epoxy printed board
Line, this microstrip antenna can be fitted tightly over the outer surface of beacon transmission device, has certain pliability, impact resistance and be difficult to
Broken, though antenna element when landing some breakage also will not image its normally work.
Cannot select shortwave/ultrashort wave after have selected microstrip antenna is operating frequency, it is known that frequency is
300MHZ(megahertz) quarter-wave a length of 250mm(millimeter).When the size of beacon transmission device is more than the four of 60mm, 2GHZ
/ mono-wavelength is 50mm；Being smaller in size than 60mm when beacon transmission device, the only frequency frequency more than 2GHZ could use.
Again due to the use frequency range that 1.7GHZ to 2.2GHZ is 3G mobile, 2.3GHZ to 2.4GHZ is for supplementing frequency range, and 2.4GHZ is extremely
2.5GHZ position WIFI frequency range, in order to avoid the interference of mobile phone Yu WIFI signal, therefore selected 2.6GHZ is operating frequency.This frequency range
Ripple front-to-back ratio shortwave is strong, is beneficial to search, and all loads onto antenna the hexahedro of beacon transmission device, when landing at least simultaneously
It is upwards, it is simple to unmanned plane is searched from high-altitude.
In a particular embodiment, beacon signal source includes derived reference signal and the frequency synthesizer being electrically connected to each other, energy
Enough produce the microwave signal of pure 2.6GHZ, and the technical specification in this beacon signal source includes: output >=5dBm(decibel
X in the least), phase noise is-80dBc/Hz@1KHz ,-90dBc/Hz@10KHz ,-100dBc/Hz@100KHz, spuious presses down with harmonic wave
System≤-65dBc.Radio frequency amplifier uses efficient filtering amplification module, and technical specification is: gain >=22dB@2.5GHz, P-1dB≥
22dBm@2.5GHz.Hilted broadsword six throw switch uses PIN pipe and the mode of MMIC combination, and technical specification is: Insertion Loss≤-65dB, every
From >=5dBc, P-1dB>=30dBm@2.5GHz, switch response time is Microsecond grade.The technical specification of control chip is: work electricity
Stream >=1A, switch time is Microsecond grade.Acceleration of gravity is calculated as 3 axle gravitational accelerometer, and technical specification is: sensitivity is
56Count/g, 1456Count/g, resolution is 17.8mg.
This beacon emissions module is in the course of the work: control chip is the most in running order, and gravitational accelerometer is in control
Judge after starting working under the control of coremaking sheet that this beacon emissions module lands, send immediately and land status information to controlling core
Sheet；Afterwards, control chip controls on and off switch and opens, and making power supply is other module for power supply in beacon emissions module, is beacon
Transmitter module is in the module startup work of holding state.
In the above-described embodiments, microstrip antenna includes conductor patch 111, medium substrate 112 and an earth plate
113, conductor patch and earth plate are separately positioned on the both sides of medium substrate.Radio frequency has been encouraged between conductor patch and earth plate
Electromagnetic field obtains micro-strip signal, and by the gap between conductor patch and earth plate to external radiation.As in figure 2 it is shown, conductor patch
Size be L*W, the thickness of medium substrate is h, dielectric constant is εr.It is known that in microstrip antenna, improve dielectric constant
Be conducive to reducing antenna size, but the too high radiation field that can limit gap, reduce radiation efficiency, and make bandwidth narrow；Increase and be situated between
Matter substrate thickness can improve antenna gain, and the thickness properly increasing dielectric constant and medium substrate can improve the radiation of antenna
Power, and input impedance is not the most affected.Conductor patch can also regard one section of microstrip transmission line as wide W, long L as, and
In general, wherein, the wavelength on microstrip antenna, λ is the wavelength of free space.Through policy, such as Fig. 3 and Fig. 4, by micro-strip
The gain-adjusted of antenna to optimum state (more than 6dBi), broadband at about 60MHZ, horizontal lobe width 70 °, vertical lobe width
Spend 60 °, complete the design to microstrip antenna parameter with this.
This utility model additionally provides a kind of unmanned plane search system, and this unmanned plane search system includes that above-mentioned beacon is sent out
Injection device, also includes the beacon reception device being arranged in unmanned plane.Specifically, as it is shown in figure 5, at unmanned plane searcher
200 include: reception antenna 210, low-noise amplifier 220 and beacon receiver 230, wherein, low-noise amplifier with connect
Receipts antenna electric connects, and beacon receiver electrically connects with low-noise amplifier, azimuth indicator and beacon reception mechatronics.
In a particular embodiment, above-mentioned reception antenna is also microstrip antenna, and specifically the design of this microstrip antenna can be with beacon
In discharger identical, index parameter is the most essentially identical, but the gain of this microstrip antenna is greater than 18dBi, and size is according to nothing
Depending on the man-machine size that can carry.The technical specification of low-noise amplifier includes: noise coefficient≤4dB@2.5GHz, gain >=
30dB@2.5GHz, P-1dB≥0dBm@2.5GHz.Beacon receiver is by the beacon signal (microwave signal received) of 2.5GHz
Carry out multistage frequency conversion process, become middle rank signal, then carry out Digital Signal Processing, lock this beacon signal.Specifically, this beacon
The technical specification of receiver includes: incoming frequency is about 2.5GHz, and input power range is-80dBm ~-30dBm, dynamic model
Enclosing for 50dB, tracking system is maximum tracking, L-band reality frequency stability≤± 0.5ppm, L-band reality frequency step
1KHz, spuious and mirror image suppression≤-60dBc, a width of 50KHz of frequency acquisition band, capture time≤5ms, AGC voltage magnitude scope
It is that 0 ~ 10V is optional.It addition, be noted that in this unmanned plane searcher and also include prefilter, be located at reception antenna and
Between low-noise amplifier.
In the course of the work, after beacon transmission device impelling is gone out, when beacon transmission device lands beginning to each
Microwave signal is launched in direction.Reception antenna in unmanned plane searcher constantly detects the microwave letter that beacon transmission device sends
Number, and analyze its intensity size, and compare the signal intensity size of all directions, and then judge the orientation of beacon transmission device,
And the result that be will determine that out by this UAV Communication system is sent.
According to above-mentioned beacon transmission device and the design of unmanned plane searcher, go out area 60*60mm according to simulation calculation
The microstrip directional antenna of left and right has the gain of about 6 ~ 8dB at 2.6GHz, calculates signal according to space loss computing formula and damages
Wherein, f is frequency to consumption value Ls=32.44+20Logd=32.44+20Log2600+20Log5 ≈ 115dB(, and unit is MHz；D is
Transmission range, unit is km).Receiving end signal level Rr=Po-Co+Ao-Ls+Ar-is calculated subsequently according to field intensity computing formula
Wherein, Rr is for receiving for Cr=Po (20dBm)-Co (0)+Ao (6dBi)-Ls (115dB)+Ar (18dBi)-Cr (0) ≈-71dBm(
End signal level, unit is dBm；Po is for launching power, and unit is dBm；Co is transmitting terminal antenna feeder loss, and unit is dB；
Ao is antenna gain, and unit is dBi；Ls is space transmission loss；Ar is receiving antenna gain, and unit is dBi；Cr is receiving terminal
Antenna feeder loss, unit is dB), affected by weather etc., actual value can little about 3dB, therefore receiving end signal level be-
About 74dBm, and in this process, it is contemplated that the size of beacon transmission device, power consumption, continuous working period, launch power P o
Require more than 20dBm；Antenna gain is conservative selects 6dBi；Receiving antenna gain requires to reach 18dBi.
Receiving sensitivity Sin (dBm)=NF (dB) × KTBRF (dBm) × Eb/No (dB) × 1/PG (dB)=-124+4+5=-
115dBm, wherein, NF is receiver noise factor, here less than 4dB；In KTBRF, k is Boltzmann constant (1.381*10-23), T0 is the absolute temperature (290K) of room temperature, and B is receiver effective noise bandwidth, is 1MHz here, therefore KTBRF=-174+50
=-124；Eb/No is output signal-to-noise ratio, is 5dB here, i.e. when signal to noise ratio is more than noise 5dB, then can capture；PG increases for processing
Benefit.According to result of calculation it can be seen that the receiving terminal level of-74dBm can meet the requirement of receiving sensitivity, and design completely
Beacon receiver by the dynamic range of 50dB, can normally work completely.
Above by being respectively described the enforcement scene case of each process, describe this utility model in detail, this area
Technical staff will be understood that.In the range of without departing from this utility model essence, can make an amendment and deform, such as part of module
Stripping use and by system embedment in other application systems.
Claims (5)
1. a beacon transmission device, it is characterised in that described beacon transmission device includes: multi-disc microstrip antenna and a beacon
Transmitter module, described multi-disc microstrip antenna electrically connects with described beacon emissions module respectively；
Described beacon emissions module includes: single pole multiple throw, beacon signal source, radio frequency amplifier, control chip, power supply are opened
Close, power supply and gravitational accelerometer, wherein, described single pole multiple throw respectively with described multi-disc microstrip antenna and on and off switch
Electrical connection, described radio frequency amplifier electrically connects with described single pole multiple throw and on and off switch respectively, and described beacon signal source is divided
Do not electrically connect with described radio frequency amplifier, on and off switch and control chip, described control chip respectively with described on and off switch,
Power supply and gravitational accelerometer electrical connection, described power supply electrically connects with described on and off switch and gravitational accelerometer respectively.
2. beacon transmission device as claimed in claim 1, it is characterised in that described microstrip antenna include a conductor patch,
One medium substrate and an earth plate, described conductor patch and described earth plate are separately positioned on the both sides of described medium substrate.
3. beacon transmission device as claimed in claim 1 or 2, it is characterised in that the profile of described beacon transmission device is vertical
Cube shape, and it includes that 6 microstrip antennas, described 6 microstrip antennas are respectively arranged in each table of described beacon transmission device
Face；Described single pole multiple throw is hilted broadsword six throw switch.
4. beacon transmission device as claimed in claim 1, it is characterised in that described beacon signal source includes being electrically connected to each other
Derived reference signal and frequency synthesizer.
5. beacon transmission device as claimed in claim 1, it is characterised in that described acceleration of gravity is calculated as 3 axle gravity to accelerate
Degree meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620685453.7U CN205809282U (en) | 2016-07-04 | 2016-07-04 | A kind of beacon transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620685453.7U CN205809282U (en) | 2016-07-04 | 2016-07-04 | A kind of beacon transmission device |
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| CN205809282U true CN205809282U (en) | 2016-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981158A (en) * | 2017-12-28 | 2019-07-05 | 北京松果电子有限公司 | Control the method, apparatus and computer readable storage medium of unmanned plane |
-
2016
- 2016-07-04 CN CN201620685453.7U patent/CN205809282U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109981158A (en) * | 2017-12-28 | 2019-07-05 | 北京松果电子有限公司 | Control the method, apparatus and computer readable storage medium of unmanned plane |
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