CN208044061U - A kind of electromagnetic wave spy ground system - Google Patents
A kind of electromagnetic wave spy ground system Download PDFInfo
- Publication number
- CN208044061U CN208044061U CN201820580997.6U CN201820580997U CN208044061U CN 208044061 U CN208044061 U CN 208044061U CN 201820580997 U CN201820580997 U CN 201820580997U CN 208044061 U CN208044061 U CN 208044061U
- Authority
- CN
- China
- Prior art keywords
- time
- varying gain
- transmitting
- reception antenna
- antenna cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005070 sampling Methods 0.000 claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 239000011152 fibreglass Substances 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 abstract description 9
- 230000003321 amplification Effects 0.000 description 12
- 238000003199 nucleic acid amplification method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000007493 shaping process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000008054 signal transmission Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model discloses a kind of electromagnetic waves to visit ground system, including host, emitting module, receiving unit and computer, host includes that sequentially connected FPGA, crystal oscillator, pretrigger, sampling pulse generator and sequentially connected time-varying gain amplifier, A/D converter, latch, DSP, USB, USB are connect with computer；Emitting module includes sequentially connected transmitting clock, transmitting antenna and transmitting antenna cover, and receiving unit includes sequentially connected sampling gate, reception antenna and reception antenna cover；FPGA includes clock sync signal source, A/D conversion timing sequences controller and the stepping delay controller being connect with clock sync signal source, time-varying gain control device, time-varying gain control device controls time-varying gain amplifier, and A/D conversion timing sequence controllers are connect with A/D converter.The transmitting and reception that electromagnetic wave is controlled by FPGA, transmit/receive antenna cover improve working efficiency according to echo analysis medium.
Description
Technical field
The utility model is related to Geophysical technique fields more particularly to a kind of electromagnetic wave to visit ground system.
Background technology
It is a kind of novel effective underground objects detection means that electromagnetic wave, which visits ground technology,.It emits high frequency by transmitting antenna
Then wideband electromagnetic wave utilizes reception antenna to receive the echo from underground, heuristically lower to be situated between finally by the analysis to echo
The structure of matter.When being propagated in the medium due to electromagnetic wave, the propagation characteristic of wave by with pass through the electrical property and geometric form of medium
Shape and change, therefore, according to the hourage of received echo, amplitude and phase information, the structure and property of deducibility medium
Deng.
It is existing to realize that the system for visiting ground function is mainly Ground Penetrating Radar using electromagnetic wave.Ground Penetrating Radar includes mainly transmitting
Machine, transmitting antenna, receiver, reception antenna, processor and display further include power-supply device, data record apparatus, anti-interference
The ancillary equipments such as equipment.In use, transmitter is by transmitting antenna by electromagnetic radiation to underground, and electromagnetic wave is by ground
Echo is formed after the effect of lower medium, the received antenna of echo receives in receiver, and the echo in receiver is divided
Analysis, you can deduce underground medium.
But when the processor of existing Ground Penetrating Radar breaks down or needs upgrading, need again to replace entire host,
So that the utilization rate of equipment reduces, and then affect the working efficiency of radar.In order to solve this problem, it is proposed that a kind of electromagnetism
Wave visits ground system.
Utility model content
The utility model provides a kind of electromagnetic wave and visits ground system, to solve the low working efficiency of utilization rate sinking of equipment
Problem.
To solve the above-mentioned problems, the utility model provides technical solution below:
A kind of electromagnetic wave spy ground system, including host, emitting module, receiving unit and computer, wherein：Host includes
FPGA, crystal oscillator, pretrigger, sampling pulse generator, time-varying gain amplifier, A/D converter, latch, DSP
And USB, emitting module include that transmitting clock, transmitting antenna and transmitting antenna cover, receiving unit include sampling gate, reception antenna
With reception antenna cover；Pretrigger, transmitting clock, transmitting antenna and transmitting antenna cover are sequentially connected electrically, sampling pulse hair
Raw device, sampling gate, reception antenna and reception antenna cover are sequentially connected electrically, sampling gate and time-varying gain amplifier, A/D converter,
Latch, DSP, USB and computer are sequentially connected electrically；FPGA includes clock sync signal source, stepping delay controller, time-varying increasing
Beneficial controller and A/D conversion timing sequence controllers, clock sync signal source are electrically connected crystal oscillator, pretrigger, step
Into delay controller and time-varying gain control device, stepping delay controller is electrically connected with sampling pulse generator, time-varying gain control
Device processed controls time-varying gain amplifier, and A/D conversion timing sequence controllers are electrically connected with A/D converter.
Optionally, time-varying gain control device and time-varying amplification controller, D/A converter, time-varying gain amplifier are electric successively
Connection.
Optionally, sampling pulse generator includes avalanche transistor, snap-off diode.
Optionally, receiving unit further includes low hot-tempered amplifier, and low hot-tempered amplifier states sampling gate respectively and reception antenna is electrically connected
It connects.
Optionally, transmitting antenna cover is set up in parallel with reception antenna cover.
Optionally, transmitting antenna cover and reception antenna cover are fiberglass radome, and in transmitting antenna cover and reception day
The inner and outer surfaces of irdome, which are both provided with, absorbs wave layer.
The utility model provides a kind of electromagnetic wave and visits ground system, the system include host, emitting module, receiving unit and
Computer.The effect of host is mainly responsible for emits electromagnetic wave according to the signal excitation emitting module that computer is sent, and controls and connect
It receives component and receives echo, and computer is passed to after echo is further processed.The main function of emitting module is in host
Control issues radio magnetic wave.The effect of receiving unit is to receive electromagnetic wave.The effect of computer is the letter for being sent to host
It number carries out analysis and obtains test result.Host includes FPGA, crystal oscillator, pretrigger, sampling pulse generator, time-varying
Gain amplifier, A/D converter, latch, DSP and USB, emitting module include transmitting clock, transmitting antenna and transmitting day
Irdome, receiving unit include sampling gate, reception antenna and reception antenna cover.Connection relation between all parts：Preposition triggering
Device is sequentially connected electrically with transmitting clock, transmitting antenna and transmitting antenna cover, sampling pulse generator and sampling gate, reception antenna
It is sequentially connected electrically with reception antenna cover, sampling gate is sequentially connected electrically with A/D converter, latch, DSP, USB and computer.
FPGA includes clock sync signal source, stepping delay controller, time-varying gain control device and A/D conversion timing sequence controllers.Clock
Source of synchronising signal is electrically connected crystal oscillator, pretrigger, stepping delay controller and time-varying gain control device, stepping
Delay controller is electrically connected with sampling pulse generator, and A/D conversion timing sequence controllers are electrically connected A/D converter.Use process：If
The computer for setting parameter sends instruction to host；Clock sync signal source in host generates pulse signal, and by generation
Pulse signal is transferred to preposition trigger circuit and stepping delay controller respectively；Pulse signal hair after preposition trigger circuit shaping
Clock is given, clock is sent pulse signal by transmitting antenna and transmitting antenna cover；Reception antenna passes through antenna
Cover filtering receives echo-signal, is sent to sampling door circuit；Meanwhile pulse signal is delayed by stepping delay controller, and by signal
It is transferred to sampling pulse generator；Impulse generator is by pulse signal transmission to sampling door circuit, and sampling door circuit is according to pulse
Signal chooses echo-signal；The echo-signal of selection becomes stable analog signal through time-varying gain amplifier amplification,
And give analog signal transmission to A/D conversion circuits；A/D conversion circuits convert analog signal to digital signal, and number is believed
Number it is transferred to latch storage；DSP pre-processes the digital signal of storage in real time, and signal passes through USB by treated
Interface is transferred to computer；It is determined according to the signal waveform obtained in computer.In the utility model, pass through FPGA, transmitting day
The transmitting and reception of irdome and reception antenna cover control host to electromagnetic wave, and according to the echo analysis underground medium of reception, have
Effect ground needs to replace the number of entire host when reducing processor fault, effectively increases the utilization rate of equipment, further carries
The high working efficiency of radar.
Description of the drawings
It, below will be to attached drawing needed in the embodiment in order to illustrate more clearly of the technical solution of the utility model
It is briefly described, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram that a kind of electromagnetic wave that utility model provides visits ground system；
Description of the drawings：1- hosts, 2- emitting modules, 3- receiving units, 4- computers, 11-FPGA, 12- crystal oscillators,
13- pretriggers, 14- sampling pulse generators, 15- time-varying gain amplifiers, 16-A/D converters, 17- latch, 18-
DSP, 19-USB, 21- emit clock, 22- transmitting antennas, 23- transmitting antenna covers, 31- sampling gates, 32- reception antennas, 33-
Reception antenna cover, the low hot-tempered amplifiers of 34-, 111- clock sync signals source, 112- stepping delay controllers, 113- time-varying gain controls
Device processed, 114-A/D conversion timing sequence controllers, 1131- time-varying amplification controllers, 1132-D/A converters.
Specific implementation mode
Referring to Fig. 1, the structural schematic diagram of ground system is visited for a kind of electromagnetic wave that the utility model embodiment provides.The system
Including host 1, emitting module 2, receiving unit 3 and computer 4.The effect of host 1 is mainly responsible for the letter sent according to computer 4
Number excitation-emission component 2 emits electromagnetic wave, and controls and receives component 3 and receive echo, and is passed to after echo is further processed
Computer 4.The main function of emitting module 2 is to issue radio magnetic wave in the control of host 1.The effect of receiving unit 3 is to connect
Receive electromagnetic wave.The effect of computer 4 is that the signal for being sent to host 1 carries out analysis acquisition test result.Host 1 includes
FPGA11, crystal oscillator 12, pretrigger 13, sampling pulse generator 14, time-varying gain amplifier 15, A/D converter
16, latch 17, DSP18 and USB19, emitting module 2 include emitting clock 21, transmitting antenna 22 and transmitting antenna cover 23,
Receiving unit 3 includes sampling gate 31, reception antenna 32 and reception antenna cover 33.FPGA11 includes clock sync signal source 111, step
Into delay controller 112, time-varying gain control device 113 and A/D conversion timing sequences controller 114.Connection between all parts is closed
System is as follows：Pretrigger 13, transmitting clock 21, transmitting antenna 22 and transmitting antenna cover 23 are sequentially connected electrically, sampling pulse
Generator 14, sampling gate 31, reception antenna 32 and reception antenna cover 33 are sequentially connected electrically, sampling gate 31 and time-varying gain amplifier
15, A/D converter 16, latch 17, DSP18, USB19 and computer 4 are sequentially connected electrically, and clock sync signal source 111 is distinguished
It is electrically connected crystal oscillator 12, pretrigger 13, stepping delay controller 112 and time-varying gain control device 113, stepping delay
Controller 112 is electrically connected with sampling pulse generator 14, and time-varying gain control device 113 controls time-varying gain amplifier 15, and A/D turns
Sequence controller 114 is changed to be electrically connected with A/D converter 16.Use process：First, parameter setting is carried out on the computer 4, is calculated
Machine 4 sends to host 1 and indicates.Secondly, clock sync signal source 111 in host 1 generates pulse signal, and by the pulse of generation
Signal is divided into two-way, amplifies shaping through pretrigger 13 all the way, becomes the pulse signal that amplitude is larger, forward position is steeper and be sent to
Emit pulse signal source.It is periodical narrow to underground transmission by transmitting antenna 22 and transmitting antenna cover 23 to emit pulse signal source
Pulse electromagnetic wave.Reception antenna 32 filters receives echo-signal by reception antenna cover 33, is sent to 31 circuit of sampling gate.Together
When, the another way pulse signal transmission that clock sync signal source 111 is sent out is to stepping delay controller 112, stepping delays time to control
Pulse signal is delayed by device 112, and transmits a signal to sampling pulse generator 14, and impulse generator generates a series of sampling
Command pulse, these sampling command pulses progress shapings become the extremely steep sampling pulse in forward position and send to sampling gate 31, sampling gate 31
Sample circuit according to the sampling pulse after shaping to receive antenna house 33 receive echo-signal be sampled.Again, it samples
Echo-signal become stable analog signal through the amplification of time-varying gain amplifier 15, and give A/D to convert analog signal transmission
Circuit；A/D conversion circuits convert analog signal to digital signal, and digital data transmission is stored to latch 17；DSP18
The digital signal of storage is pre-processed in real time, and signal is transferred to computer 4 by USB19 interfaces by treated；Root
It is determined according to the signal waveform obtained in computer 4.In the utility model, transmitting of the host 1 to electromagnetic wave is controlled by FPGA11
And reception, the number for replacing host 1 is effectively reduced, the utilization rate of equipment is improved；Again by transmitting antenna cover 23 and connecing
It receives antenna house 33 and protects transmitting antenna 22 and reception antenna 32 further to control the transmitting and reception of electromagnetic wave, and then improve
The utilization rate of equipment further increases the working efficiency of radar.In the utility model, pass through FPGA11,23 and of transmitting antenna cover
Reception antenna cover 33 controls transmitting and reception of the host 1 to electromagnetic wave, and according to the echo analysis underground medium of reception, effectively
The number for needing to replace entire host 1 when reducing processor fault, effectively increases the utilization rate of equipment, further improves
The working efficiency of radar.
In order to make the waveform of echo on the computer 4 become apparent, it is provided between sampling gate 31 and A/D converter 16
Time-varying gain amplifier 15.It is main to realize following three functions under the action of time-varying gain amplifier 15, when to delay compared with
The scatter echo of small close-in target is amplified using decaying or compared with low gain；Second is that for the larger distant object of time delay
Scatter echo is inhibited using higher gain amplification；Third, interfering clutter.In order to allow time-varying gain amplifier 15 more
Good plays a role, and in the present embodiment, clock sync signal source 111 is electrically connected with time-varying gain control device 113, time-varying gain control
Device 113 processed is sequentially connected electrically with time-varying amplification controller 1131, D/A converter 1132, time-varying gain amplifier 15.Use process
In, clock sync signal source 111 controls time-varying gain control device 113 by pulse signal, and time-varying gain control device 113 controls
Time-varying amplification controller 1131, time-varying amplification controller 1131 control D/A converter 1132, and D/A converter 1132 controls time-varying
Gain amplifier 15.The effect that time-varying gain amplifier 15 is controlled by time-varying gain control device 113, can be such that computer 4 connects
The echo waveform received is relatively sharp, steady, conveniently clearly can confirm underground medium, improve the service efficiency of equipment,
Further improve the working efficiency of equipment.
In order to make pulse signal be more bonded needed for condition, in the present embodiment, sampling pulse generator 14 includes snowslide three
Pole pipe, snap-off diode.Avalanche transistor is the mistake of the addend times rated voltage between the collector and emitter of transistor
Pressure makes transistor that avalanche breakdown occur, and rise time extremely short electromagnetic pulse is generated using the avalanche characteristic of transistor.Step two
Pole pipe is so that transistor is generated pulse using reversed pressurization.The impulse amplitude that avalanche transistor generates is larger, snap-off diode production
Raw base magnitude is very narrow.According to required condition, suitable transistor can be selected.And then improve working efficiency.
In order to which the signal of echo can be increased, computer 4 is set easily to go out underground medium according to waveforms detection, originally
In embodiment, receiving unit 3 further includes low hot-tempered amplifier 34, and low hot-tempered amplifier 34 states 32 electricity of sampling gate 31 and reception antenna respectively
Connection.Reception antenna 32 receives signal by the filtering of reception antenna cover 33, and signal is sent after the amplification of low hot-tempered amplifier 34
To sampling gate 31.Signal amplifies through low hot-tempered amplifier 34, wave can be made to enhance, and waveform when being transferred to computer 4 understands, improves
Working efficiency.
Other than above-mentioned component influences working efficiency, transmitting antenna cover 23 and reception antenna cover 33 in the present embodiment also shadow
Ring working efficiency.Transmitting antenna cover 23 is set on transmitting antenna 22, and reception antenna cover 33 is set on reception antenna 32.Transmitting
The effect one of antenna house 23 and reception antenna cover 33 protects antenna system from wind and rain, ice and snow, sand and dust and solar radiation etc.
It influences, keeps antenna system working performance more stable reliable, while mitigating the abrasion, corrosion and aging of antenna system, extension makes
Use the service life；Second is that eliminating wind load and wind moment, reduce the driving power of rotary antenna, mitigate mechanical structure weight, reduces used
Amount improves intrinsic frequency；Third, related detection method and personnel can work in cover, it is not affected by the external environment, improves detection
The service efficiency of method and the operating condition for improving operating personnel.In order to protect transmitting antenna 22 and reception antenna 32, this implementation
In example, transmitting antenna cover 23 and reception antenna cover 33 are setting fiberglass radome, and fiberglass radome is that a kind of fiber is strong
Change plastics, have many advantages, such as that high-strength light, corrosion-resistant, electrical property is relatively good, reception antenna 32 and transmitting can be effectively protected
Antenna 22 improves the service life of equipment, reduces the replacement of equipment, and then improve the working efficiency of equipment.In order to make reception
Signal is more strong, is both provided in the inner and outer surfaces of transmitting antenna cover 23 and reception antenna cover 33 and absorbs wave layer.Absorb wave layer
Reception antenna cover 33 can be helped to receive more filtering signals so that the intensity enhancing for receiving signal is transferred on computer 4
Echo waveform it is clear, analysis underground medium it is simple, and then improve working efficiency.
In order to keep received signal relatively sharp, and clutter is less, and transmitting antenna 22 and reception antenna 32 may be provided at together
One vertical direction so that the signal that transmitting antenna 22 emits is less, and the signal that reception antenna 32 receives is less and transmitting is believed
Number with receive signal and interfere with each other so that test result is inaccurate, and then influences working efficiency.In order to make received signal more
Clearly, reception antenna 32 is juxtaposed on transmitting antenna 22 in same horizontal line.Transmitting antenna cover 23 and reception antenna cover 33
It is set up in parallel, and there is no overlapping region between transmitting antenna cover 23 and reception antenna cover 33.Transmitting antenna cover 23 and reception antenna
It is juxtaposed in same horizontal line between cover 33, and therebetween without overlapping region so that transmitting signal and reception signal
It does not lose, and emits signal and do not interfered with each other with signal is received, test result is more accurate, and then improves working efficiency.
A kind of electromagnetic wave visits the application method on ground, includes the following steps：
S01：The computer for setting parameter sends instruction to host；
S02：Clock sync signal source in host generates pulse signal, and before the pulse signal of generation is transferred to respectively
Set trigger circuit and stepping delay controller；
S03：Pulse signal after preposition trigger circuit shaping is sent to clock, and clock passes through transmitting antenna and transmitting
Antenna house sends pulse signal；Reception antenna filters receives echo-signal by antenna house, is sent to the circuit of sampling gate；
Pulse signal is delayed by stepping delay controller, and transmits a signal to sampling pulse generator；
S04：Impulse generator is by pulse signal transmission to sampling door circuit, and sampling door circuit is according to pulse signal is to returning
Wave signal is chosen；
S05：The echo-signal of selection becomes stable analog signal through time-varying gain amplifier amplification, and by analog signal
It is transferred to A/D conversion circuits；
S06：A/D conversion circuits convert analog signal to digital signal, and digital data transmission is stored to latch；
S07：DSP pre-processes the digital signal of storage in real time, and signal is transmitted by USB interface by treated
To computer；
S08：It is determined according to the signal waveform obtained in computer.
From above-described embodiment as can be seen that the utility model provides a kind of electromagnetic wave spy ground system.The system includes master
Machine 1, emitting module 2, receiving unit 3 and computer 4.Host 1 includes FPGA11, crystal oscillator 12, pretrigger 13, takes
Sample impulse generator 14, time-varying gain amplifier 15, A/D converter 16, latch 17, DSP18 and USB19, emitting module 2 wrap
Transmitting clock 21, transmitting antenna 22 and transmitting antenna cover 23 are included, receiving unit 3 includes sampling gate 31, reception antenna 32 and connects
Receive antenna house 33.FPGA11 includes clock sync signal source 111, stepping delay controller 112,113 and of time-varying gain control device
A/D conversion timing sequences controller 114.Connection relation between all parts is as follows：Pretrigger 13, transmitting clock 21, hair
It penetrates antenna 22 and transmitting antenna cover 23 is sequentially connected electrically, sampling pulse generator 14, sampling gate 31, reception antenna 32 and reception day
Irdome 33 is sequentially connected electrically, sampling gate 31 and time-varying gain amplifier 15, A/D converter 16, latch 17, DSP18, USB19
It is sequentially connected electrically with computer 4, clock sync signal source 111 is electrically connected crystal oscillator 12, pretrigger 13, stepping
Delay controller 112 and time-varying gain control device 113, stepping delay controller 112 are electrically connected with sampling pulse generator 14, when
Gain-scheduling control device 113 controls time-varying gain amplifier 15, and A/D conversion timing sequences controller 114 is electrically connected with A/D converter 16.
Use process：First, parameter setting is carried out on the computer 4, and computer 4 sends to host 1 and indicates.Secondly, in host 1 when
Clock source of synchronising signal 111 generates pulse signal, and the pulse signal of generation is divided into two-way, amplifies all the way through pretrigger 13
Shaping becomes the pulse signal that amplitude is larger, forward position is steeper and is sent to transmitting pulse signal source.Emit pulse signal source by hair
It penetrates antenna 22 and transmitting antenna cover 23 periodically sends burst pulse electromagnetic wave to underground.Reception antenna 32 passes through reception antenna cover
33 filtering receives echo-signals, are sent to sampling gate 31.Meanwhile the another way pulse signal that clock sync signal source 111 is sent out
It is transferred to stepping delay controller 112, pulse signal is delayed by stepping delay controller 112, and transmits a signal to sampling arteries and veins
Generator 14 is rushed, sampling pulse generator 14 generates a series of sampling command pulse, these sampling command pulses carry out shaping
Become the extremely steep sampling pulse in forward position to send to sampling gate 31, the sample circuit of sampling gate 31 is docked according to the sampling pulse after shaping
The echo-signal that antenna house receives is received to be sampled.Again, the echo-signal of sampling becomes through the amplification of time-varying gain amplifier 15
Stable analog signal, and give analog signal transmission to A/D conversion circuits；A/D conversion circuits convert analog signal to number
Signal, and digital data transmission is stored to latch 17；DSP18 pre-processes the digital signal of storage in real time, and will
Treated, and signal is transferred to computer 4 by USB19 interfaces；It is determined according to the signal waveform obtained in computer 4.This practicality
In novel, transmitting and reception of the host 1 to electromagnetic wave are controlled by FPGA11, the number for replacing host 1 is effectively reduced, carries
The high utilization rate of equipment；Again by transmitting antenna cover 23 and reception antenna cover 33 protect transmitting antenna 22 and reception antenna 32 come
The transmitting and reception of electromagnetic wave are further controlled, and then improves the utilization rate of equipment, further increases the working efficiency of radar.
In the utility model, host 1 is controlled to the transmitting of electromagnetic wave by FPGA11, transmitting antenna cover 23 and reception antenna cover 33 and is connect
It receives, and according to the echo analysis underground medium of reception, time for replacing entire host 1 is needed when effectively reducing processor fault
Number, effectively increases the utilization rate of equipment, further improves the working efficiency of radar.In order to make time-varying gain amplifier 15 can
Preferably to play a role, in the present embodiment, clock sync signal source 111 is electrically connected with time-varying gain control device 113, and time-varying increases
Beneficial controller 113 is sequentially connected electrically with time-varying amplification controller 1131, D/A converter 1132, time-varying gain amplifier 15.In order to
Make pulse signal be more bonded needed for condition, in the present embodiment, sampling pulse generator 14 includes avalanche transistor, two pole of step
Pipe.In order to which the signal of echo can be increased, computer 4 is allow easily to go out underground medium, this implementation according to waveforms detection
In example, receiving unit 3 further includes low hot-tempered amplifier 34, and low hot-tempered amplifier 34 states sampling gate 31 respectively and reception antenna 32 is electrically connected
It connects.Other than above-mentioned component influences working efficiency, transmitting antenna cover 23 and reception antenna cover 33 in the present embodiment also influence work
Make efficiency.In order to protect reception antenna 22 and reception antenna 32, in the present embodiment, transmitting antenna cover 23 is equal with reception antenna cover 33
For fiberglass radome is arranged.In order to keep received signal more strong, in transmitting antenna cover 23 and reception antenna cover 33,
Outer surface, which is both provided with, absorbs wave layer.In order to keep received signal relatively sharp, reception antenna 32 is set side by side with transmitting antenna 22
It sets, and the two is without overlapping region.
Those skilled in the art will readily occur to the utility model after considering the embodiment of specification and practice here
Other embodiments.The utility model is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and include not used skill of the utility model
Common knowledge in art field or conventional techniques.The description and examples are only to be considered as illustrative, the utility model
True scope and spirit are indicated by the following claims.
It should be understood that the utility model is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model is only wanted by appended right
It asks to limit.
Claims (6)
1. a kind of electromagnetic wave visits ground system, which is characterized in that including host (1), emitting module (2), receiving unit (3) and calculate
Machine (4), wherein：
The host (1) include FPGA (11), crystal oscillator (12), pretrigger (13), sampling pulse generator (14),
Time-varying gain amplifier (15), A/D converter (16), latch (17), DSP (18) and USB (19), the emitting module (2)
Including transmitting clock (21), transmitting antenna (22) and transmitting antenna cover (23), the receiving unit (3) includes sampling gate
(31), reception antenna (32) and reception antenna cover (33)；
The pretrigger (13) and the transmitting clock (21), the transmitting antenna (22) and the transmitting antenna cover
(23) it is sequentially connected electrically, the sampling pulse generator (14) and the sampling gate (31), the reception antenna (32) and described
Reception antenna cover (33) is sequentially connected electrically, the sampling gate (31) and the time-varying gain amplifier (15), the A/D converter
(16), the latch (17), the DSP (18), the USB (19) and the computer (4) are sequentially connected electrically；
The FPGA (11) includes clock sync signal source (111), stepping delay controller (112), time-varying gain control device
(113) and A/D conversion timing sequences controller (114), the clock sync signal source (111) are electrically connected the crystal oscillator
(12), the pretrigger (13), the stepping delay controller (112) and the time-varying gain control device (113), it is described
Stepping delay controller (112) is electrically connected with the sampling pulse generator (14), and the time-varying gain control device (113) is used for
The time-varying gain amplifier (15) is controlled, the A/D conversion timing sequences controller (114) is electrically connected with the A/D converter (16)
It connects.
2. spy ground according to claim 1 system, which is characterized in that the time-varying gain control device (113) is put with time-varying
Big controller (1131), D/A converter (1132), the time-varying gain amplifier (15) are sequentially connected electrically.
3. spy ground according to claim 1 system, which is characterized in that the sampling pulse generator (14) includes snowslide three
Pole pipe, snap-off diode.
4. spy ground according to claim 1 system, which is characterized in that the receiving unit (3) further includes low hot-tempered amplifier
(34), the low hot-tempered amplifier (34) is electrically connected with the sampling gate (31) and the reception antenna (32) respectively.
5. spy ground according to claim 1 system, which is characterized in that the transmitting antenna cover (23) and the reception antenna
Cover (33) is set up in parallel.
6. spy ground according to claim 1 system, which is characterized in that the transmitting antenna cover (23) and the reception antenna
It is fiberglass radome to cover (33), and in the inner and outer surfaces of the transmitting antenna cover (23) and the reception antenna cover (33)
It is both provided with and absorbs wave layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820580997.6U CN208044061U (en) | 2018-04-23 | 2018-04-23 | A kind of electromagnetic wave spy ground system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820580997.6U CN208044061U (en) | 2018-04-23 | 2018-04-23 | A kind of electromagnetic wave spy ground system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208044061U true CN208044061U (en) | 2018-11-02 |
Family
ID=63928296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820580997.6U Active CN208044061U (en) | 2018-04-23 | 2018-04-23 | A kind of electromagnetic wave spy ground system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208044061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519598A (en) * | 2018-04-23 | 2018-09-11 | 云南电网有限责任公司临沧供电局 | A kind of electromagnetic wave spy ground system and method |
-
2018
- 2018-04-23 CN CN201820580997.6U patent/CN208044061U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519598A (en) * | 2018-04-23 | 2018-09-11 | 云南电网有限责任公司临沧供电局 | A kind of electromagnetic wave spy ground system and method |
| CN108519598B (en) * | 2018-04-23 | 2023-11-10 | 云南电网有限责任公司临沧供电局 | Electromagnetic wave ground penetrating system and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103017865B (en) | Intermittent surface measurement | |
| CN105158763A (en) | Meteorological radar system based on continuous wave system and control method | |
| CN109633758B (en) | Multi-frequency composite ground penetrating radar system | |
| CN105891844A (en) | Dual mode laser pulse emission control and echo signal processing system | |
| CN102707263A (en) | Multi-frequency multi-base high-frequency ground wave radar system and operating method thereof | |
| CN103698758A (en) | Digital ionosonde | |
| CN105204023A (en) | Echo signal processing method and device of weather radar system based on continuous wave system | |
| CN106680805A (en) | Method for tracing target with self-adaptive variable waveform | |
| CN103630943B (en) | A method and system for detecting lunar soil thickness and lunar subsurface geological structure | |
| CN208044061U (en) | A kind of electromagnetic wave spy ground system | |
| CN105422087A (en) | Multi-frequency electromagnetic wave resistivity measurement system | |
| CN108594197A (en) | A kind of adaptive range-amplitude display weighting system of ground radar and method | |
| CN104215940A (en) | FPGA (field programmable gate array)-based method for implementing ship-navigation radar transmitting and receiving system | |
| CN108519598A (en) | A kind of electromagnetic wave spy ground system and method | |
| CN202600143U (en) | Navigation radar transceiver device for ships | |
| CN204595207U (en) | A kind of radar target, interference, clutter integrated simulation system | |
| CN205656304U (en) | Ground penetrating radar data acquisition system | |
| CN202256700U (en) | UWB radar life detecting instrument | |
| CN102253380B (en) | Adaptive height measurement device | |
| CN202654158U (en) | Digital pulse-type ultrasonic transmitting device used for fetal monitor | |
| CN205450261U (en) | Calibration source device based on high frequency over --horizon radar | |
| CN100454040C (en) | Shallow Seabed Transient Electromagnetic Detection and Launching Device | |
| CN203206253U (en) | Multispectral frequency identification device for surface acoustic wave device | |
| CN205656744U (en) | Disconnected signal wireless transmission system during earthquake in well | |
| CN216979319U (en) | Nuclear magnetic resonance water detecting equipment for shield tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |