CN207283564U - A kind of medium wave navigation terminal - Google Patents
A kind of medium wave navigation terminal Download PDFInfo
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- CN207283564U CN207283564U CN201721074959.5U CN201721074959U CN207283564U CN 207283564 U CN207283564 U CN 207283564U CN 201721074959 U CN201721074959 U CN 201721074959U CN 207283564 U CN207283564 U CN 207283564U
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- navigation terminal
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Abstract
A kind of medium wave navigation terminal, the day tune monitor board encouraged in control panel, wave band control panel and day tune case in transmitter is controlled by industrial personal computer, realizes that the intelligence of medium wave navigation system cuts frequency and self-adapting tuning.One key of layman can open radio frequency and normal transmission, larger it can reduce because the working frequency points of approval and current frequency point are inconsistent, or the antenna length difference of installation and the weather of antenna end cause standing-wave ratio change etc., cause medium wave navigation terminal can not match somebody with somebody humorous and normal transmission with antenna, professional technician is needed to garrison a large amount of debugging at the scene repeatedly or for a long time, influence the phenomenons of duty cycle indirectly, the technology specialty for greatly reducing operating cost and operating personnel requires.
Description
Technical field
The utility model belongs to wireless communication field, more particularly to a kind of medium wave navigation terminal.
Background technology
At present, no matter domestic or external medium wave guidance station can only be led using single frequency in a period of time
Boat, it cannot be realized as short wavelength emissions system is switched fast frequency point.And since current medium wave guidance station is being built and is being adjusted
During examination, its working frequency points is among application, therefore, can not carry out it in the construction of medium wave guidance station and debugging process
The setting of working frequency points.In addition, for same medium wave guidance station, particularly it is located in the ground that in marine environment or height above sea level is higher
Medium wave guidance station in the particular surroundings such as area, the matching network of its transmitting antenna depend critically upon weather conditions.
So for each medium wave guidance station, its working frequency points decide and antenna installation after, be required for
Guidance station technical staff voluntarily adjusts antenna matching network so that medium wave guidance station can be normally with humorous, transmitting, and cold every year
Hot alternate spring, Qiu Liangji, the antenna matching network of medium wave guidance station need to readjust, and for being located in marine environment or
The medium wave guidance station of the particular surroundings such as the higher area of person's height above sea level, the matching status of its antenna matching network is even within one day
There is significant change, at this time, then needed to be tuned readjusting for matching network within one day.
And since the adjustment point for being related to resonance matching when changing navigation frequency or antenna parameter conversion is relatively more, it is not only right
Transmitter region of interest is adjusted, and the allotting network of supporting transmitter antenna related to transmitter is with the change of frequency
Specific aim adjustment is made, therefore, the adjustment of medium wave guidance station needs to put into many man power and materials.Under normal circumstances, change
Changing the frequency layman of a medium wave guidance station can not directly operate, and also compare even professional performs to change to operate frequently
It is cumbersome, at least need more than ten or even tens hours.
Therefore, constantly update and regenerate with transmitter, under frequency handover or different length antenna or current antenna is sent
During parameter change, how to realize layman can fast operating medium wave navigation system become medium wave navigation system be badly in need of solution
Certainly the problem of.
Utility model content
Technical problem to be solved in the utility model is：A kind of medium wave navigation terminal is provided, realizes medium wave navigation system
Intelligence cut frequency and self-adapting tuning.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of medium wave navigation terminal, including sequentially connected transmitter, day tune case, transmitting antenna, it is characterised in that also wrap
Include：
Monitoring unit, monitoring unit include industrial personal computer；
The transmitter includes sequentially connected excitation control panel, power amplifier and wave filter, wave filter and includes wave band
Control panel；
The day tune case includes day tune monitor board and sequentially connected impedance transformer, rf sampling plate, fine setting circuit
With coarse adjustment circuit, the day tune monitor board connects with impedance inverter circuit, rf sampling plate, fine setting circuit and coarse adjustment circuit respectively
Connect；
The industrial personal computer is established two-way with excitation control panel, the wave band control panel and the day tune monitor board respectively
Communication connection.
Further, the fine setting circuit is a variometer, and the coarse adjustment circuit is by the loading coil that is connected in parallel
Formed with compensating electric capacity.
Further, the variometer is ball variometer.
Further, industrial personal computer encourages control panel, the wave band control panel and the day with described respectively by CAN bus
Monitor board is adjusted to establish both-way communication connection.
Further, the power amplifier is switch power amplifier, and use output voltage is fixed, electric current is with load
The pattern of change.
Further, the impedance transformer uses transformer isolation impedance matching pattern.
Further, the wave band control panel includes standing-wave ratio detection circuit and power amplification efficiency detection circuit.
Further, it is connected with a two-phase stepper motor between the day tune monitor board and fine setting circuit.
Further, it is connected with relay group between the day tune monitor board and coarse adjustment circuit.
The beneficial effects of the utility model are：The excitation control panel in transmitter, wave band is controlled to control by industrial personal computer
Day tune monitor board in plate and day tune case, realizes that the intelligence of medium wave navigation system cuts frequency and self-adapting tuning.Layman one
Key can open radio frequency and normal transmission, larger can reduce because the working frequency points of approval and current frequency point are inconsistent, or the day of installation
Line length is different and the weather of antenna end causes standing-wave ratio change etc., cause medium wave navigation terminal can not with antenna with it is humorous simultaneously
Normal transmission, it is necessary to professional technician repeatedly or the long-term phenomenons garrisoned a large amount of debugging at the scene, influence duty cycle indirectly,
Greatly reduce operating cost and the technology specialty requirement of operating personnel.
Brief description of the drawings
Fig. 1 is the entire block diagram of medium wave navigation terminal；
Fig. 2 is the control link schematic diagram of medium wave navigation terminal；
Fig. 3 is the radio frequency link schematic diagram of medium wave navigation terminal；
Fig. 4 is the principle schematic of excitation control panel；
Fig. 5 is the principle schematic of wave filter；
Fig. 6 is the principle schematic of impedance transformer；
Fig. 7 is the principle schematic of day tune case；
Fig. 8 is the principle schematic of antenna loop.
Embodiment
To describe the technology contents of the utility model, the objects and the effects in detail, below in conjunction with embodiment and match somebody with somebody
Attached drawing is closed to be explained.
The design of the utility model most critical is：Pass through the excitation control panel in industrial personal computer control transmitter, wave band control
Day tune monitor board in making sheet and day tune case, realizes that the intelligence of medium wave navigation system cuts frequency and self-adapting tuning.
Fig. 1, a kind of medium wave navigation terminal, including sequentially connected transmitter, day tune case, transmitting antenna are refer to, is also wrapped
Include：
Monitoring unit, monitoring unit include industrial personal computer；
The transmitter includes sequentially connected excitation control panel, power amplifier and wave filter, wave filter and includes wave band
Control panel；
The day tune case includes day tune monitor board and sequentially connected impedance transformer, rf sampling plate, fine setting circuit
With coarse adjustment circuit, the day tune monitor board connects with impedance inverter circuit, rf sampling plate, fine setting circuit and coarse adjustment circuit respectively
Connect；
The industrial personal computer is established two-way with excitation control panel, the wave band control panel and the day tune monitor board respectively
Communication connection.
As can be seen from the above description, the beneficial effects of the utility model are：Excitation in transmitter is controlled by industrial personal computer
Day tune monitor board in control panel, wave band control panel and day tune case, realizes that the intelligence of medium wave navigation system cuts frequency and adaptive tune
It is humorous.
Further, the fine setting circuit is a variometer, and the coarse adjustment circuit is by the loading coil that is connected in parallel
Formed with compensating electric capacity.
Further, the variometer is ball variometer.
Seen from the above description, finely tune circuit and coarse adjustment circuit constitutes antenna loop, antenna is tuned, so that day
Maximum current and power are obtained on line.Wherein, adjustable ball variometer is facilitated as circuit is finely tuned using inductance value, slightly
Loading coil and compensating electric capacity composition that route is connected in parallel are recalled to, in antenna loop, in addition to sealing in variable inductance, is also gone here and there
Enter the loading coil and capacitance of fixed taps, of antenna and power amplifier unit can be realized by adjusting two inductance or selection capacitance
Match somebody with somebody.
Further, industrial personal computer encourages control panel, the wave band control panel and the day with described respectively by CAN bus
Monitor board is adjusted to establish both-way communication connection.
Seen from the above description, industrial personal computer is improved using the connection mode of CAN bus to control with excitation control panel, wave band
Real-time, the reliability of data communication between plate, day tune monitor board.
Further, the power amplifier is switch power amplifier, and use output voltage is fixed, electric current is with load
The pattern of change.
Further, the impedance transformer uses transformer isolation impedance matching pattern.
Further, the wave band control panel includes standing-wave ratio detection circuit and power amplification efficiency detection circuit.
Seen from the above description, power amplifier uses close power amplifier pipe, and use output voltage is fixed, electric current is with load
The pattern of change, while impedance transformer uses transformer isolation impedance matching pattern, and wave band control panel includes standing-wave ratio
Detection circuit and power amplification efficiency detection circuit, then when rear end antenna loop with it is humorous after, different impedance gears consumption it is whole
Machine power consumption is different, by predetermined power demand values/power supply power consumption change come efficiency can guide required impedance matching,
While the rule that standing-wave ratio circuit is embodied is：Closer to the reflected standing-wave ratio of impedance transformer gear institute of impedance matching
To be minimum value, in summary two kinds of means are, it can be achieved that the impedance matching of transmitter and antenna.
Further, it is connected with a two-phase stepper motor between the day tune monitor board and fine setting circuit.
Further, it is connected with relay group between the day tune monitor board and coarse adjustment circuit.
Embodiment one
Medium wave navigation terminal includes monitoring unit, transmitter, day tune case and transmitting antenna.Monitoring unit includes power chain
Road, industrial personal computer and its peripheral circuit, transmitter include power unit, excitation control panel, power amplifier and wave filter, day tune case
Including day tune monitor board, impedance transformer, rf sampling plate, fine setting circuit and coarse adjustment circuit, transmitting antenna is by H-type antenna sets
Into.
Monitoring unit is the control axis of medium wave navigation terminal and receives signal monitoring center, is mainly used for human-computer interaction,
Control transmitter is acted with day tune case according to control flow.
Transmitter is that the transmitting signal of medium wave navigation terminal produces and amplify maincenter, and there is power to be controlled 0W- by instruction
100W adjustable functions.The control of transmitter monitored unit, can setting the parameter of transmitting signal, (such as tranmitting frequency, working method, swash
Encourage signal level, modulation, modulating frequency etc.), switch extension set and state and parameter that work is reported to monitoring unit.
It adjusts case to have and controlled by instruction, Auto-matching matches somebody with somebody humorous function as this terminal and the coupling matching part of antenna.
It adjusts case to complete the impedance matching effect required by power amplifier unit, completes the effect of transimission power again, while also to filter out
Harmonic wave, makes the harmonic energy that complete machine exports meet index request.
Transmitting antenna mainly goes out the emission of radio frequency signals that day tune case transmits, and rides upon near runway.
Monitoring unit, transmitter, the connection relation of day tune case and transmitting antenna can be decomposed into two kinds of links.
(1) link is controlled
Complete machine control link includes upper and lower computer telecommunication circuit, action executing circuit and signal monitoring circuit.
As shown in Fig. 2, industrial personal computer is host computer, excitation control panel, wave band control panel and day tune monitor board are slave computer, work
Control machine establishes two-way with excitation control panel, the wave band control panel and the day tune monitor board respectively by CAN bus
News connection.
Control panel is encouraged to receive the command information that industrial personal computer is sent, for performing " tranmitting frequency ", " modulation intelligence ", " load
The functions such as ripple signal level ", while transmitter section parameter is monitored and reported, the parameter of monitoring has：Power amplifier temperature, work
Working frequency, supply voltage, source current.
Wave band control panel receives the command information that industrial personal computer is sent, for performing " frequency range switching " function.
It adjusts monitor board mainly to complete control and monitoring to matching coupled link circuit, and monitoring parameters have antenna current and amplitude modulation
There are coarse adjustment gear, impedance gear and automatic tuning in degree, control section.
(2) radio frequency link
The radio frequency link of medium wave navigation terminal is as shown in figure 3, including excitation control panel, power amplifier, filter
Ripple device, impedance transformer, alihnment coil, loading coil/compensating electric capacity and transmitting antenna.
Encourage control panel to produce pumping signal corresponding with the parameter set, high-power letter is enlarged into by power amplifier
Number, it is sent into day tune case after the respective filter wave band filtering by the switching of wave band control panel.In day tune case, signal passes through impedance
Matching and the tuning of antenna loop, realize that output signal is under best match state and to external radiation with antenna load.Equipment
In high band operation, coarse adjustment gear can switch to compensating electric capacity by loading coil.
Pass through the explanation of above-mentioned radio frequency link, it is known that, intelligently cut frequency and be related to encouraging control panel, wave filter and day tune case portion
Point, the antenna of different length is related to day tune box part with humorous and antenna environment factor with humorous.Intelligence cuts frequency and self-adapting tuning
It is required that each several part has the design automatically controlled on hardware, the principle of each several part is as follows.
Fig. 4 show the principle schematic of excitation control panel.The carrier signal of corresponding working frequency is produced by excitation control panel
It is raw, encourage the microcontroller of control panel to receive Content of Communication from CAN communication link and parse frequency data, send DDS electricity to
Road, produces corresponding carrier signal by DDS circuit and the carrier power amplifier circuit of rear class is sent to through drive circuit, it can be seen that work
The conversion output of frequency can automatically control.
It is effective to full frequency band and power amplification of the carrier power amplifier to carrier signal is not only restricted to the scope of frequency point, therefore
Frequency part is cut not state.
Through the amplified carrier power signal of carrier power amplifier, demand can be changed into after needing the filter filtering of warp let-off rear class
Radiation form：Sine wave.Since operating frequency range is 190k-700k, 2 frequencys multiplication, 3 frequencys multiplication of low frequency frequency point ranges fall
In operating frequency range, therefore need to carry out frequency range switching.
Fig. 5 show the principle schematic of wave filter.Cover working frequency range scope four sections are housed in harmonic filter
Frequency range, four sections of frequency ranges are received the instruction control vacuum high-pressure relay switching selection of industrial personal computer by wave band control panel, this also may be used
Automatically control.Pass through the two samplings there are standing-wave ratio detection circuit and power amplification efficiency detection circuit on wave band control panel at the same time
Circuit can be to rear class impedance gear matching instruct, since this carrier power amplifier is using close power amplifier pipe, and be adopted as
Output voltage fix but electric current with load change form, while according to Fig. 6, the impedance transformer of this equipment using
Transformer isolation impedance matching pattern, then when rear end antenna loop with it is humorous after, different impedance gears consumption complete machine work(
Consumption is different, by predetermined power demand values/power supply power consumption change come efficiency can be guided in certain degree it is required
Impedance matching, while the rule that standing-wave ratio circuit is embodied is, the impedance transformer gear closer to impedance matching is embodied
Standing-wave ratio out will be minimum value, and comprehensive two kinds of means, then can guide the impedance matching for how realizing transmitter and antenna.
Fig. 7 show the principle schematic of day tune case, radiofrequency signal (the i.e. sine wave of wave filter output of transmitter output
Power signal) via matching of the tune case realization in day with antenna, resonance.It adjusts case to include impedance transformer, rf sampling plate, day tune
Monitor board, fine setting circuit, wherein coarse adjustment circuit (loading coil, compensating electric capacity), impedance matching box circuit are as shown in fig. 6, it is hindered
Anti- gear can be switched by vacuum high-pressure relay to be selected, and fine setting circuit (is specifically shown in application number for a ball variometer
201310154596.6 patent application), it is controlled by two-phase stepper motor, and the inductance or capacitance in coarse adjustment circuit are also by vacuum height
Potential relay switching selection, and the relay group of the above and two-phase stepper motor by day tune monitor board receive industrial personal computer instruct into
Action work switches, while wherein coarse adjustment circuit and fine setting circuit constitutes antenna loop.
The effect of antenna loop is that antenna is tuned, so as to obtain maximum current and power on antenna.Antenna loop
After the tuned matching of power amplifier unit radio frequency power output, antenna is sent to greatest extent and is gone.Meanwhile during antenna loop resonance,
Fundamental current is maximum, and maximum to the series impedance of harmonic wave, to prevent harmonic current from flowing into antenna, plays and further filters out harmonic wave
Effect.Automatic tuning apparatus can make antenna automatic tuning and keep humorous when changes in environmental conditions causes antenna reactance to change
Shake state.
Fig. 8 is the principle schematic of antenna loop, and for different working frequencies, the impedance variations of antenna itself are larger,
Therefore in antenna loop, in addition to sealing in variable inductance T1, fixed taps inductance T2 and capacitance C1 have also been sealed in, they are common
Antenna in series resonance circuit is constituted, adjusting T1, T2 or selection C1 makes antenna be matched with power amplifier unit.
As can be seen from the above description, hardware view uses auto-control Design, and the intelligence for realizing medium wave navigation terminal is cut
Frequency and self-adapting tuning.One key of layman can open radio frequency and normal transmission, larger can reduce because of the working frequency points of approval
It is inconsistent with current frequency point, or the antenna length installed is different and the weather of antenna end causes standing-wave ratio change etc., in causing
Ripple navigation terminal can not match somebody with somebody humorous and normal transmission with antenna, it is necessary to which professional technician repeatedly or for a long time garrisons a large amount of tune at the scene
Examination, the phenomenon for influencing duty cycle indirectly, greatly reduce operating cost and the technology specialty requirement of operating personnel.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalents made based on the specification and figures of the utility model, are directly or indirectly used in relevant technology neck
Domain, is equally included in the patent within the scope of the utility model.
Claims (9)
1. a kind of medium wave navigation terminal, including sequentially connected transmitter, day tune case, transmitting antenna, it is characterised in that also wrap
Include：
Monitoring unit, monitoring unit include industrial personal computer；
The transmitter includes sequentially connected excitation control panel, power amplifier and wave filter, and wave filter is controlled comprising wave band
Plate；
The day tune case includes day tune monitor board and sequentially connected impedance transformer, rf sampling plate, fine setting circuit and thick
Road is recalled to, the day tune monitor board is connected with impedance inverter circuit, rf sampling plate, fine setting circuit and coarse adjustment circuit respectively；
The industrial personal computer establishes both-way communication with excitation control panel, the wave band control panel and the day tune monitor board respectively
Connection.
2. medium wave navigation terminal according to claim 1, it is characterised in that the fine setting circuit is a variometer,
The coarse adjustment circuit is made of the loading coil and compensating electric capacity being connected in parallel.
3. medium wave navigation terminal according to claim 2, it is characterised in that the variometer is spherical variable inductance
Device.
4. medium wave navigation terminal according to claim 1, it is characterised in that the industrial personal computer by CAN bus respectively with
The excitation control panel, the wave band control panel are established both-way communication with the day tune monitor board and are connected.
5. medium wave navigation terminal according to claim 1, it is characterised in that the power amplifier is switch power amplification
Device, and use the pattern that output voltage is fixed, electric current changes with load.
6. medium wave navigation terminal according to claim 1, it is characterised in that the impedance transformer uses transformer isolation
Impedance matching pattern.
7. medium wave navigation terminal according to claim 1, it is characterised in that the wave band control panel is detected comprising standing-wave ratio
Circuit and power amplification efficiency detection circuit.
8. medium wave navigation terminal according to claim 1, it is characterised in that between the day tune monitor board and fine setting circuit
It is connected with a two-phase stepper motor.
9. medium wave navigation terminal according to claim 1, it is characterised in that between the day tune monitor board and coarse adjustment circuit
It is connected with relay group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721074959.5U CN207283564U (en) | 2017-08-25 | 2017-08-25 | A kind of medium wave navigation terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721074959.5U CN207283564U (en) | 2017-08-25 | 2017-08-25 | A kind of medium wave navigation terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207283564U true CN207283564U (en) | 2018-04-27 |
Family
ID=61984728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721074959.5U Active CN207283564U (en) | 2017-08-25 | 2017-08-25 | A kind of medium wave navigation terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN207283564U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194342A (en) * | 2018-08-06 | 2019-01-11 | Oppo广东移动通信有限公司 | A kind of tuning completely inegrated circuit and tuning methods, terminal and storage medium |
| CN109212463A (en) * | 2018-10-30 | 2019-01-15 | 中海油信息科技有限公司 | The directionless Radio Beacon of offshore oil platform matches humorous device and method automatically |
-
2017
- 2017-08-25 CN CN201721074959.5U patent/CN207283564U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194342A (en) * | 2018-08-06 | 2019-01-11 | Oppo广东移动通信有限公司 | A kind of tuning completely inegrated circuit and tuning methods, terminal and storage medium |
| CN109194342B (en) * | 2018-08-06 | 2020-11-03 | Oppo广东移动通信有限公司 | Tuning full integrated circuit, tuning method, terminal and storage medium |
| CN109212463A (en) * | 2018-10-30 | 2019-01-15 | 中海油信息科技有限公司 | The directionless Radio Beacon of offshore oil platform matches humorous device and method automatically |
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