CN208654343U - A kind of tunnel tunnel face transient electromagnetic radar spy water system - Google Patents
A kind of tunnel tunnel face transient electromagnetic radar spy water system Download PDFInfo
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- CN208654343U CN208654343U CN201821406956.1U CN201821406956U CN208654343U CN 208654343 U CN208654343 U CN 208654343U CN 201821406956 U CN201821406956 U CN 201821406956U CN 208654343 U CN208654343 U CN 208654343U
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Abstract
The utility model discloses a kind of tunnel tunnel face transient electromagnetic radars to visit water system, including the system of reception, the computer connecting with the signal output end of the system of reception and emission system；The reception system includes receiving antenna, sensor and A/D converter; receiving antenna is connected to amplifier by sensor; amplifier is connect with A/D converter by filter; A/D converter is connect by FPGA and arm processor with computer, and emission system includes waveform transmitters, driver, output protection circuit, output stage, transmitting antenna and power supply.The utility model has good detection accuracy, it can be used for multidirectional detection front of tunnel heading geology water-bearing structure, superposition, which is acquired, by using forward and reverse wave realizes that fast moving scan-type detects, quick, the convenient and lossless detection of geologic body in earth's surface to larger depth can be achieved, be conducive to the monitoring of construction period water disaster, have a vast market foreground.
Description
Technical field
The utility model relates to Geological Prediction Technology field, specifically a kind of tunnel tunnel face transient electromagnetic radar is visited
Water system.
Background technique
Common advance geologic prediction foundation principle can be divided into geological analysis predicted method and geophysics object both at home and abroad at present
Spy method.Geological analysis predicted method mainly has pilot heading method and advance borehole method；Geophysics geophysical prospecting is former according to instrument work
Reason can be divided into again: using back wave variation as micro- vibration wave bounce technique (TSP) of measuring principle and echolation (GPR)；With electricity
The variation of resistance rate is DC electrical method (DEM), High Density Resistivity and the transient electromagnetic method (TEM) of measuring principle.Geological radar by
Higher in frequency of use, the energy of electromagnetic wave is decayed very greatly in the earth formation, and investigation depth is very shallow, and transient electromagnetic detecting is mainly
One-point measurement, detection efficient is lower, is not suitable for being detected on a large scale.
Tunnel is the engineering works being embedded in stratum, is a kind of form of human use's underground space, in order to prevent
It is aqueous to carry out detection tunnel tunnel face front geo-logical terrain usually using Geological Prediction Technology for the generation of tunnel water bursting disaster
Situation.But traditional tunnel tunnel face water detection apparatus often can only single direction detection front of tunnel heading geo-logical terrain it is aqueous
Situation causes detection accuracy not high, at the same can not quick discrimination front of tunnel heading ground body resistivity exception, be unfavorable for constructing
Period effectively carries out water disaster monitoring.Therefore, it is necessary to design a kind of tunnel tunnel face transient electromagnetic radar spy water system.
Utility model content
The purpose of this utility model is to provide a kind of tunnel tunnel face transient electromagnetic radars to visit water system, above-mentioned to solve
The problem of being proposed in background technique, by combining both geological radar and Transient Electromagnetic Apparatus advantage, by geology method, geophysical prospecting and brill
Spy method combines, and acquires superposition using forward and reverse square wave and realizes that fast moving scan-type detects, while making up geologic radar detection
The problems such as depth is wired and serious interference, it can be achieved that in earth's surface to larger depth geologic body quick, convenient and lossless detection, have
Conducive to the monitoring of construction period water disaster.
To achieve the above object, the utility model provides the following technical solutions:
A kind of tunnel tunnel face transient electromagnetic radar spy water system is exported including receiving system and receiving the signal of system
Hold the computer and emission system of connection；The reception system includes the receiving antenna, sensor and A/D of electromagnetic induction device
Converter；The receiving antenna is connect by signal cable with the system of reception；The receiving antenna is connected to by sensor to be put
Big device；The amplifier is connect with A/D converter by filter；The A/D converter passes through field programmable gate array
FPGA and arm processor are connect with computer；The emission system include waveform transmitters, driver, output protection circuit,
Output stage, the transmitting antenna of electromagnetic induction device and the power supply for powering to waveform transmitters, driver and output stage；Institute
The output for stating waveform transmitters is connected with the input of driver；The output of the driver is connected to defeated by output protection circuit
Grade out protects driver and the electric current of output stage to stablize by output protection circuit, is conducive to improve detection accuracy；The electricity
Source is connect with waveform transmitters, driver and output stage respectively；The transmitting antenna is connect by signal cable with emission system；
The waveform transmitters are for continuously emitting pulsed low frequency electromagnetic signals；The sensor is used for the magnetic of electromagnetic induction device
Signal is changed into electric signal；The amplifier is for amplifying the electric signal that sensor changes；The filter is used for will
The electric signal of amplifier amplification is filtered high-frequency interferencing signal and forms analog signal transmission to A/D converter；The A/D
Converter is used to analog signal being converted to digital signal；The FPGA is used to digital signal carrying out data acquisition and store；
The arm processor is used to the FPGA data acquired being transferred to computer；
FPGA is selected in the data acquisition, is the concurrency and real-time for having fully considered FPGA, can be with firmly in FPGA
Part description language constructs the ADC controller of multiple complete parallels, so that parallel synchronous, which controls each channel ADC, carries out data acquisition,
This is that ARM institute is irrealizable.
As a further solution of the present invention: the output stage passes sequentially through synchronous isolating circuit, synchronization signal electricity
Road is connect with on-site programmable gate array FPGA；The synchronous signal circuit passes through synchronous electricity with on-site programmable gate array FPGA
Cable connection；The assembled arrangement form of the transmitting antenna and receiving antenna corresponds to Coincident loop arrangement.
The A/D converter is ADS1255 as a further solution of the present invention,；The driver includes using
The IR2110S driving chip of electric current output is improved in offer driving capability.
The reception system is equipped with no less than 16 channels as a further solution of the present invention,；And it described connects
Each channel in receipts system is all made of individual converter；Data acquisition is synchronized by parallel control, is realized each logical
Road synchronous data collection；The reception system uses unified clock source and trigger signal；The clock source and trigger signal warp
Synchronization distribution is to each channel of reception system after driving, to realize each Channel Synchronous.
SDRAM memory is integrated on the FPGA as a further solution of the present invention,；SDRAM memory
Compared with SRAM memory, there is that memory capacity is big, small in size, low in energy consumption, at low cost, but since SDRAM is being used
It needs to initialize and refresh in the process, control process ratio SRAM is complicated many, the mark that reception system provides ALTERA company
Quasi- sdram controller is integrated into FPGA, to reduce design efforts would；It is equipped between the emission system and reception system
The routing of one Asynchronous Serial Interface RS232 and two reception system is transmitted to the control signal of emission system, is controlled and is believed by two-way
The driver' s timing of number generation transmit circuit IGBT come determine the power supply of emission system, have a power failure moment and power supply direction.
Compared with prior art, the utility model has the beneficial effects that
1) the utility model has good detection accuracy, can be used for multidirectional detection front of tunnel heading geology water-bearing structure,
Geology method, geophysical prospecting and probing method are combined, are passed through by both the utility model combination geological radar and Transient Electromagnetic Apparatus advantage
Superposition acquired using forward and reverse wave realize and fast move scan-type detection, compensate for deficiency of the geological radar in investigation depth and
The problem of serious interference；
2) the utility model can realize multidirectional detection front of tunnel heading geology water-bearing structure, improve detection accuracy, can be fast
Speed differentiates the exception of front of tunnel heading ground body resistivity, reduces around face geology rock mass, equipment etc. to coil magnetic field
Influence；
3) the utility model can realize quick, the convenient and lossless detection of geologic body in earth's surface to larger depth, be conducive to
The monitoring of construction period water disaster, has a vast market foreground.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that tunnel tunnel face transient electromagnetic radar visits water system.
Specific embodiment
The utility model is described in more detail in the following with reference to the drawings and specific embodiments.Following embodiment will have
Help those skilled in the art and further understand the utility model, but does not limit the utility model in any form.It should refer to
Out, to those skilled in the art, without departing from the concept of the premise utility, if can also make
Dry modification and improvement.It encloses in these protection gardens for belonging to the utility model.
Embodiment 1
Please refer to Fig. 1.It should be clear that structure depicted in this specification attached drawing, ratio, size etc., only to cooperate explanation
The revealed content of book is not intended to limit the utility model enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence under the effect of the utility model can be generated and the purpose that can reach, it is revealed should all still to fall in the utility model
Technology contents obtain in the range of capable of covering.
A kind of tunnel tunnel face transient electromagnetic radar visits water system, including emission system, receives system and be with receiving
The computer of the signal output end connection of system；
The emission system includes waveform transmitters, driver, output protection circuit, output stage, electromagnetic induction device
Transmitting antenna and power supply for powering to waveform transmitters, driver and output stage；The waveform transmitters are for continuous
Emit pulsed low frequency electromagnetic signals；The output of the waveform transmitters is connected with the input of driver；The driver it is defeated
Output stage is connected to by output protection circuit out, it can be with the electricity of effective protection driver and output stage by output protection circuit
Stream is stablized, and is conducive to improve detection accuracy；The power supply is connect with waveform transmitters, driver and output stage respectively；It is described
Transmitting antenna is connect by signal cable with emission system；The driver includes defeated to improve electric current for providing driving capability
IR2110S driving chip out；
The reception system include the receiving antenna of electromagnetic induction device, sensor, amplifier, A/D converter, FPGA and
Arm processor；The receiving antenna is connect by signal cable with the system of reception；The receiving antenna is connected to by sensor
Amplifier；The amplifier is connect with A/D converter by filter；The A/D converter passes through field programmable gate array
FPGA and arm processor are connect with computer；The output stage passes sequentially through synchronous isolating circuit, synchronous signal circuit and scene
Programmable gate array FPGA connection；The sensor is used to the magnetic signal of electromagnetic induction device being changed into electric signal；It is described to put
Big device is for amplifying the electric signal that sensor changes；The electric signal that the filter is used to amplify in amplifier carried out
It filters high-frequency interferencing signal and forms analog signal transmission to A/D converter；The A/D converter is for converting analog signal
At digital signal；The FPGA is used to digital signal carrying out data acquisition and store；The arm processor is for adopting FPGA
The data of collection are transferred to computer；
FPGA is selected in the data acquisition, is the concurrency and real-time for having fully considered FPGA, can be with firmly in FPGA
Part description language constructs the ADC controller of multiple complete parallels, so that parallel synchronous, which controls each channel ADC, carries out data acquisition,
This is that ARM institute is irrealizable；
The arm processor is the bridge for linking up computer and FPGA, why carries out the conversion of upper and lower level communication protocol
Select ARM, be in order to make full use of ARM communication interface abundant, although these communication interfaces can also be realized with FPGA,
It is but more much higher than ARM with the FPGA difficulty realized and cost；
A/D converter is most important device in reception system, and in the present embodiment, A/D converter selects that precision is high, power consumption
Low, small in size, the simple ADS1255 of peripheral circuit, can integrate gain-programmed amplifier and digital filtering by A/D converter
Device can reduce analog circuit to the greatest extent, to reduce the link that may introduce noise in analog signal, be conducive to improve data essence
Degree is also beneficial to reduce system bulk and reduces cost；
The reception system is equipped with 16 channels；In order to realize each Channel Synchronous data acquisition, each of reception system
Channel all uses individual A/D converter, synchronizes data acquisition by parallel control；The reception system is using unification
Clock source and trigger signal；The clock source and trigger signal after driving synchronization distribution to each channel of reception system, from
And realize each Channel Synchronous；
It is integrated with SDRAM memory on the FPGA, in the present embodiment, selects the SDRAM of 16MB, meet the channel 1MB/
Design requirement, SDRAM memory have the advantages that memory capacity is big, small in size, low in energy consumption, at low cost compared with SRAM memory,
But since SDRAM needs to initialize and refresh in use, control process ratio SRAM is complicated many, receiving system will
The standard sdram controller that ALTERA company provides is integrated into FPGA, to reduce design efforts would；
The synchronous signal circuit is connect with on-site programmable gate array FPGA by synchronizing cable；The transmitting antenna with
The assembled arrangement form of receiving antenna corresponds to Coincident loop arrangement, is exactly that (one is used as transmitting, and one is used as by two lines circle
Receive) it is layered on same position, and then transient electromagnetic radar scanning is carried out in tunnel tunnel face；
The routing reception system of an Asynchronous Serial Interface RS232 and two is equipped between the emission system and reception system to pass
It is sent to the control signal of emission system, the driver' s timing of transmit circuit IGBT is generated by two path control signal to determine transmitting system
The power supply of system, have a power failure moment and power supply direction；
The RS232 is used to receive the frequency of system transmission signal, emission system uploads emission current, turn-off delay time
With real-time working time data；The transmitting antenna and receiving antenna are formed by the enamel covered wire diffraction of the number of turns not etc.；Pass through base
In transient electromagnetic method Radar Technology, primary field and secondary field that can simultaneously in acquisition system be excited by multiple electromagnetic pulse, into
The observation of row multiple stacking is covered with space, and suppresses random disturbances to back wave by data processing, to be conducive to improve letter
It makes an uproar and compares, realize the identification to significant wave；Wherein, the data acquisition of transient electromagnetic processing analysis method, primary field and secondary field can
With referring to " 2014 Chinese geoscience combine Annual Conference " application of the transient electromagnetic radar in urban underground pipeline exploration,
2014, Hou Weiqing, Ye Ying.
Embodiment 2
Please refer to Fig. 1.It should be clear that structure depicted in this specification attached drawing, ratio, size etc., only to cooperate explanation
The revealed content of book is not intended to limit the utility model enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence under the effect of the utility model can be generated and the purpose that can reach, it is revealed should all still to fall in the utility model
Technology contents obtain in the range of capable of covering.
A kind of tunnel tunnel face transient electromagnetic radar visits water system, including emission system, receives system and be with receiving
The computer of the signal output end connection of system；
The emission system includes waveform transmitters, driver, output protection circuit, output stage, electromagnetic induction device
Transmitting antenna and power supply for powering to waveform transmitters, driver and output stage；The waveform transmitters are for continuous
Emit pulsed low frequency electromagnetic signals；The output of the waveform transmitters is connected with the input of driver；The driver it is defeated
Output stage is connected to by output protection circuit out, it can be with the electricity of effective protection driver and output stage by output protection circuit
Stream is stablized, and is conducive to improve detection accuracy；The power supply is connect with waveform transmitters, driver and output stage respectively；It is described
Transmitting antenna is connect by signal cable with emission system；The driver is IR2110S driving chip；
The reception system include the receiving antenna of electromagnetic induction device, sensor, amplifier, A/D converter, FPGA and
Arm processor；The receiving antenna is connect by signal cable with the system of reception；The receiving antenna is connected to by sensor
Amplifier；The amplifier is connect with A/D converter by filter；The A/D converter passes through field programmable gate array
FPGA and arm processor are connect with computer；The output stage passes sequentially through synchronous isolating circuit, synchronous signal circuit and scene
Programmable gate array FPGA connection；
The sensor is used to the magnetic signal of electromagnetic induction device being changed into electric signal；The amplifier will be for that will sense
The electric signal of device transformation amplifies；The filter is used to for the electric signal that amplifier amplifies to be filtered High-frequency Interference letter
Number and form analog signal transmission to A/D converter；The A/D converter is used to analog signal being converted to digital signal；It is logical
Gain-programmed amplifier and digital filter can be integrated by crossing A/D converter, can reduce analog circuit to the greatest extent, to reduce simulation
The link that noise may be introduced in signal is conducive to improve data precision, is also beneficial to reduce system bulk and reduces cost；
The FPGA is used to digital signal carrying out data acquisition and store；The arm processor is for acquiring FPGA
Data be transferred to computer；FPGA is selected in the data acquisition, is the concurrency and real-time for having fully considered FPGA,
The ADC controller of multiple complete parallels can be constructed in FPGA with hardware description language, so that parallel synchronous controls each channel ADC
Data acquisition is carried out, this is that ARM institute is irrealizable；
The arm processor is the bridge for linking up computer and FPGA, why carries out the conversion of upper and lower level communication protocol
Select ARM, be in order to make full use of ARM communication interface abundant, although these communication interfaces can also be realized with FPGA,
It is but more much higher than ARM with the FPGA difficulty realized and cost；
The reception system is equipped with 16 channels；In order to realize each Channel Synchronous data acquisition, each of reception system
Channel all uses individual converter, synchronizes data acquisition by parallel control；
The reception system uses unified clock source and trigger signal；The clock source and trigger signal are same after driving
Step is distributed to each channel of reception system, to realize each Channel Synchronous；
It is integrated with SDRAM memory on the FPGA, in the present embodiment, selects the SDRAM of 16MB, meet the channel 1MB/
Design requirement, SDRAM memory have the advantages that memory capacity is big, small in size, low in energy consumption, at low cost compared with SRAM memory,
But since SDRAM needs to initialize and refresh in use, control process ratio SRAM is complicated many, receiving system will
The standard sdram controller that ALTERA company provides is integrated into FPGA, to reduce design efforts would；
The synchronous signal circuit is connect with on-site programmable gate array FPGA by synchronizing cable；The transmitting antenna with
The assembled arrangement form of receiving antenna corresponds to Coincident loop arrangement, is exactly that (one is used as transmitting, and one is used as by two lines circle
Receive) it is layered on same position, and then transient electromagnetic radar scanning is carried out in tunnel tunnel face；The transmitting antenna and receiving antenna
By the number of turns, equal enamel covered wire diffraction is not formed；By being based on transient electromagnetic method Radar Technology, can simultaneously in acquisition system one
Secondary field and secondary field are excited by multiple electromagnetic pulse, are carried out multiple stacking observation and are covered with space, and pass through data processing pair
Back wave suppresses random disturbances, to be conducive to improve signal-to-noise ratio, realizes the identification to significant wave；Wherein, transient electromagnetic is handled
The data acquisition of analysis method, primary field and secondary field may refer to " Chinese geoscience joint Annual Conference in 2014 " transition
Application of the electromagnetism radar in urban underground pipeline exploration, 2014, Hou Weiqing, Ye Ying.
The working principle of the utility model is: generating the driver' s timing of transmit circuit IGBT by two path control signal to determine
Determine emission system power supply, have a power failure the moment and power supply direction, waveform transmitters by power supply power supply output rectangle, semisinusoidal or
The circuit of triangle supply waveform is to transmitting antenna and generates primary field, while signal is synchronized to FPGA using signal cable, hair
It penetrates after system cut-off and generates induced current in objective body and generate secondary field, be based on transient electromagnetic method Radar Technology, can adopt simultaneously
The assembled arrangement form of primary field and secondary field in collecting system, transmitting antenna and receiving antenna corresponds to Coincident loop arrangement,
It is exactly two lines circle (one is used as transmitting, and one is used as reception) to be layered on same position, and then carry out wink in tunnel tunnel face
Power transformation magnetic radar scanning is carried out by continual impulse ejection and acquisition in real time, and using transient electromagnetic processing analysis method
Data processing and imaging judge geological condition of the Electromagnetic Wave Propagation by medium.
The utility model beneficial effect is that the utility model has good detection accuracy, can be used for multidirectional detection area
Face front geological water-bearing structure, both the utility model combination geological radar and Transient Electromagnetic Apparatus advantage, by geology method, geophysical prospecting
It is combined with probing method, acquires superposition by using forward and reverse wave and realize that fast moving scan-type detects, and compensates for geological radar
The deficiency and serious interference in investigation depth the problem of；The utility model can realize the fast of geologic body in earth's surface to larger depth
Prompt, convenient and lossless detection is conducive to the monitoring of construction period water disaster；The utility model can realize multidirectional detection front of tunnel heading
Geology water-bearing structure, improves detection accuracy, can quick discrimination front of tunnel heading ground body resistivity exception, reduce area
The influence to coil magnetic field such as geology rock mass, equipment, has a vast market foreground around face.
The better embodiment of the utility model is explained in detail above, but the utility model be not limited to it is above-mentioned
Embodiment can also not depart from the utility model ancestor within the knowledge of one of ordinary skill in the art
Various changes can be made under the premise of purport.There is no necessity and possibility to exhaust all the enbodiments.And it thus amplifies out
Obvious changes or variations still in the protection scope of the utility model among.
Claims (7)
1. a kind of tunnel tunnel face transient electromagnetic radar visits water system characterized by comprising receive system and receive system
Signal output end connection computer and emission system；
The reception system includes the receiving antenna, sensor and A/D converter of electromagnetic induction device；The receiving antenna passes through
Signal cable is connect with the system of reception；The receiving antenna is connected to amplifier by sensor；The amplifier and A/D are converted
Device is connected by filter；The A/D converter is connected by on-site programmable gate array FPGA and arm processor and computer
It connects；
The emission system includes the transmitting of waveform transmitters, driver, output protection circuit, output stage, electromagnetic induction device
Antenna and power supply for powering to waveform transmitters, driver and output stage；The output and driving of the waveform transmitters
The input of device is connected；The output of the driver is connected to output stage by output protection circuit；The power supply respectively with waveform
Transmitter, driver are connected with output stage；The transmitting antenna is connect by signal cable with emission system.
2. tunnel tunnel face transient electromagnetic radar according to claim 1 visits water system, which is characterized in that the output stage
Synchronous isolating circuit, synchronous signal circuit and on-site programmable gate array FPGA is passed sequentially through to connect.
3. tunnel tunnel face transient electromagnetic radar according to claim 2 visits water system, which is characterized in that the synchronous letter
Number circuit is connect with on-site programmable gate array FPGA by synchronizing cable；The assembled arrangement of the transmitting antenna and receiving antenna
Form corresponds to Coincident loop arrangement.
4. tunnel tunnel face transient electromagnetic radar according to claim 3 visits water system, which is characterized in that the A/D turns
Parallel operation is ADS1255；The driver includes the IR2110S driving chip for providing driving capability to improve electric current output.
5. tunnel tunnel face transient electromagnetic radar according to claim 1 visits water system, which is characterized in that the reception system
System is equipped with no less than 16 channels；And each channel in the reception system is all made of individual converter.
6. tunnel tunnel face transient electromagnetic radar according to claim 5 visits water system, which is characterized in that the reception system
System uses unified clock source and trigger signal.
7. tunnel tunnel face transient electromagnetic radar according to claim 1 visits water system, which is characterized in that on the FPGA
It is integrated with SDRAM memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821406956.1U CN208654343U (en) | 2018-08-29 | 2018-08-29 | A kind of tunnel tunnel face transient electromagnetic radar spy water system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406956.1U CN208654343U (en) | 2018-08-29 | 2018-08-29 | A kind of tunnel tunnel face transient electromagnetic radar spy water system |
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| Publication Number | Publication Date |
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| CN208654343U true CN208654343U (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061745A (en) * | 2018-08-29 | 2018-12-21 | 中交第公路工程局有限公司 | A kind of tunnel tunnel face transient electromagnetic radar visits water system and visits water installations |
-
2018
- 2018-08-29 CN CN201821406956.1U patent/CN208654343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061745A (en) * | 2018-08-29 | 2018-12-21 | 中交第公路工程局有限公司 | A kind of tunnel tunnel face transient electromagnetic radar visits water system and visits water installations |
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