CN102681018B - Transient electromagnetic instrument for mine and transient electromagnetic signal processing method - Google Patents
Transient electromagnetic instrument for mine and transient electromagnetic signal processing method Download PDFInfo
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Abstract
The invention discloses a transient electromagnetic instrument for mine and a transient electromagnetic signal processing method. The method comprises the following steps that: (a), a real-time transmitting module transmits two types of electromagnetic waves in interval period, namely mining electromagnetic waves and empty-mining electromagnetic waves; (b), a real-time acquisition module receives two electromagnetic wave signals emitted in interval period in real time and transmits the electromagnetic wave signals to a complex programmable logic controller device; and (c), the complex programmable logic controller device transmits the electromagnetic wave signals to a microprocessor for processing through an internal control bus, and the microprocessor performs difference operation on the two received electromagnetic wave signals and obtains an operation result. A 32-bit high-end embedded microprocessor communicates with the complex programmable logic controller device through a cable, when the electromagnetic waves are transmitted, the two types of mining electromagnetic waves and empty-mining electromagnetic waves are transmitted in interval period, the two types of electromagnetic waves which are acquired in real time are transmitted to the microprocessor to perform difference operation, and the acquired data of which the interference is filtered is seamlessly acquired under the conditions of high-speed acquisition and high-speed operation processing.
Description
Technical field
The present invention relates to mining geology detecting instrument field, particularly relate to a kind of mine transient electromagnetic instrument and transient electromagnetic signal processing method.
Background technology
Transient electromagnetic method also claims TDEM (Time domain electromagneticmethods), be called for short TEM, it utilizes earth-free loop line or ground connection line source to launch pulsatile once magnetic field to underground, at pulsatile once magnetic field tempus intercalare, coil is utilized to observe the method for secondary turbulence field.Its basic methods is: the transmitting coil passing to certain waveform-shaped current in ground or aerial setting, thus produce an electromagnetic field at its surrounding space, and induction current is produced in the conduction rock ore body of underground: after power-off, induction current is decayed in time due to thermal losses.Attenuation process is generally divided into early, in and late period.Early stage electromagnetic field is equivalent to the radio-frequency component in frequency field, and decay is fast, and skin depth is little; Late period, composition was then equivalent to the low-frequency component in frequency field, and decay is slow, and skin depth is large.By the secondary field Changing Pattern in time of each time period after measurement power-off, the ground electrical feature of different depth can be obtained.
Chinese utility model patent application number is: " 200920181682.5 ", name is called: disclose a kind of Novel mining transient electromagnetic instrument in the patent application document of " Novel mining transient electromagnetic instrument ", comprise two groups of direct supplys on not ground altogether, MCU, internal memory, USB interface, liquid crystal display circuit, optocoupler, radiating circuit, receiving circuit, transmitting coil and receiving coil, described receiving circuit, internal memory, liquid crystal display circuit, optocoupler, USB interface is connected with MCU respectively, wherein one group of direct supply is that MCU powers, another group power supply is that radiating circuit is powered, optocoupler is for isolating radiating circuit and receiving circuit, radiating circuit is connected with receiving coil with transmitting coil respectively with receiving circuit, described radiating circuit adopts low-voltage current-limiting circuit, within its emitting voltage is limited in 9.6V, transmitter current controls within 1.5A.But the program directly adopts MCU to carry out control and the process of transmitting and acknowledge(ment) signal, and acquisition rate is not high, and effectively not processing the random interfering signal gathered, when serious interference, relatively normal value.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of utilization and carries out live signal with the CPLD (CPLD) of microprocessor (MCU) bus communication and launches and collection, improve the mine transient electromagnetic instrument of acquisition rate, and adopt the real number of accepting and believing to adopt signal subtraction and transient electromagnetic signal processing method that filtering clutter disturbs with empty.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of mine transient electromagnetic instrument, comprise microprocessor, Internal Control Bus IBC, CPLD, real time emission module, Real-time Collection module and display module, described microprocessor is electrically connected with CPLD by Internal Control Bus IBC, described real time emission module, Real-time Collection module are electrically connected with CPLD respectively, and described display module is connected with microprocessor; Described real time emission module comprises emission controlling unit and transmitting coil, and the input end of emission controlling unit connects CPLD, and the output terminal of emission controlling unit connects transmitting coil; Described Real-time Collection module comprises collection control module and collection coil, and the input end gathering control module connects CPLD, and the output terminal of collection control module connects collection coil; Described real time emission modular spacing periodic emission two kinds of electromagnetic waves, a kind of for adopting electromagnetic wave in fact, another kind of adopt electromagnetic wave for sky, two kinds of electromagnetic wave signals that described Real-time Collection module real-time reception gap periods is launched being sent in microprocessor by CPLD are processed, microprocessor carries out difference operation to receive two kinds of electromagnetic wave signals, draws operation result.
Wherein, described emission controlling unit comprises left half-bridge conducting control chip, right half-bridge conducting control chip, the first field effect transistor, the second field effect transistor, the 3rd field effect transistor and the 4th field effect transistor, first field effect transistor and the second field effect transistor form left half-bridge structure, and the 3rd field effect transistor and the 4th field effect transistor form right half-bridge structure; Left half-bridge conducting control chip comprises the first control output end, the second control output end, the first Enable Pin and the first control input end, first control input end and the first enable control end are connected respectively to CPLD, first control output end connects the grid of the first field effect transistor, second control output end connects the grid of the second field effect transistor, the source electrode of the first field effect transistor connects high level, the grounded drain of the second field effect transistor, the public point that the drain electrode of the first field effect transistor is connected with the source electrode of the second field effect transistor connects one end of transmitting coil; Right half-bridge conducting control chip comprises the 3rd control output end, the 4th control output end, the second Enable Pin and the second control input end, second control input end and the second enable control end are connected respectively to CPLD, 3rd control output end connects the grid of the 3rd field effect transistor, 4th control output end connects the grid of the 4th field effect transistor, the source electrode of the 3rd field effect transistor connects high level, the grounded drain of the 4th field effect transistor, the public point that the drain electrode of the 3rd field effect transistor is connected with the source electrode of the 4th field effect transistor connects the other end of transmitting coil.
Wherein, described electromagnetic instrument also comprises the touch-screen for man-machine interaction, and described touch-screen is electrically connected with described microprocessor.
Wherein, described electromagnetic instrument also comprises usb communication interface, and described usb communication interface is electrically connected with described microprocessor.
Wherein, described electromagnetic instrument also comprises the rechargeable battery pack for mobile power supply.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of transient electromagnetic signal processing method, comprise the following steps:
A. the electromagnetic wave of real time emission modular spacing periodic emission two type, a kind of adopts electromagnetic wave for real, another kind ofly adopts electromagnetic wave for sky;
B. two kinds of electromagnetic wave signals of Real-time Collection module real-time reception gap periods transmitting, and send into CPLD;
C. CPLD is sent in microprocessor by Internal Control Bus IBC and is processed, and microprocessor carries out difference operation to receive two kinds of electromagnetic wave signals, draws operation result.
Wherein, in step a, the described reality waveform adopted in electromagnetic one-period is square-wave signal, and the described sky waveform adopted in electromagnetic one-period is silent signal.
Wherein, also comprise after described step c and microprocessor carried out the operation result that difference operation obtains and send into by USB the step that on-the site analysis software obtains geological analysis figure.
Wherein, described CPLD adopts MAX1270 high-speed figure response process chip.
Wherein, described microprocessor adopts high-end ARM2440 high-speed computation process chip.
The invention has the beneficial effects as follows: not high and effectively not the processing the random interfering signal gathered of the mine transient electromagnetic instrument acquisition rate being different from prior art, when serious interference, the relatively defect of normal value, microprocessor of the present invention (MCU) and CPLD (CPLD) pass through bus communication, when emitting electromagnetic wave, gap periods launches real adopting and the empty electromagnetic wave adopting two types, and the electromagnetic wave of this two type of Real-time Collection feeding microprocessor carries out difference operation, when high speed acquisition and high-speed computation process, seamlessly obtain the image data after filtering interfering.
Accompanying drawing explanation
Fig. 1 is the block diagram of mine transient electromagnetic instrument embodiment of the present invention;
Fig. 2 is the real time emission module circuit diagram of mine transient electromagnetic instrument embodiment of the present invention;
Fig. 3 is the real-time acquisition time schematic diagram of mine transient electromagnetic instrument embodiment of the present invention;
Fig. 4 is transient electromagnetic signal processing method flow chart of steps of the present invention;
Fig. 5 is that transient electromagnetic signal processing method transmitted waveform of the present invention gathers sequential chart.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Refer to Fig. 1, the mine transient electromagnetic instrument of the embodiment of the present invention, comprise microprocessor 10, Internal Control Bus IBC 11, CPLD 12, real time emission module 13, Real-time Collection module 14 and display module 15, described microprocessor 10 is electrically connected with CPLD 12 by Internal Control Bus IBC 11, described real time emission module 13, Real-time Collection module 14 are electrically connected with CPLD 12 respectively, and described display module 15 is connected with microprocessor 10; Described real time emission module 13 comprises emission controlling unit and transmitting coil, and the input end of emission controlling unit connects CPLD 12, and the output terminal of emission controlling unit connects transmitting coil; Described Real-time Collection module 14 comprises collection control module and collection coil, and the input end gathering control module connects CPLD 12, and the output terminal of collection control module connects collection coil; Described real time emission modular spacing periodic emission two kinds of electromagnetic waves, a kind of for adopting electromagnetic wave in fact, another kind of adopt electromagnetic wave for sky, two kinds of electromagnetic wave signals that described Real-time Collection module 14 real-time reception gap periods is launched also pass through process in complicated programmable logic device 12 feeding microprocessors 10, microprocessor 10 carries out difference operation to receive two kinds of electromagnetic wave signals, draws operation result.
Adopting electromagnetic wave is in fact square-wave signal, it is silent signal that sky adopts electromagnetic wave, it is the composite signal including available signal and environmental interference noise signal in fact that the reality that Real-time Collection module acquires obtains adopts electromagnetic wave signal, and the sky that Real-time Collection module acquires obtains is adopted electromagnetic wave signal and is in fact only comprised environmental interference noise signal, so utilize microprocessor to carry out difference operation to receive two kinds of electromagnetic wave signals, can available signal be drawn.
Not high and effectively not the processing the random interfering signal gathered of the mine transient electromagnetic instrument acquisition rate being different from prior art, when serious interference, the relatively defect of normal value, microprocessor of the present invention (MCU) and CPLD (CPLD) pass through bus communication, when emitting electromagnetic wave, gap periods launches real adopting and the empty electromagnetic wave adopting two types, and the electromagnetic wave of this two type of Real-time Collection feeding microprocessor carries out difference operation, when high speed acquisition and high-speed computation process, seamlessly obtain the image data after filtering interfering.
Refer to Fig. 2, described emission controlling unit comprises left half-bridge conducting control chip F1, right half-bridge conducting control chip F2, the first field effect transistor Q1, the second field effect transistor Q2, the 3rd field effect transistor Q3 and the 4th field effect transistor Q4, first field effect transistor Q1 and the second field effect transistor Q2 forms left half-bridge structure, and the 3rd field effect transistor Q3 and the 4th field effect transistor Q4 forms right half-bridge structure, left half-bridge conducting control chip F1 comprises the first control output end HO, second control output end LO, first Enable Pin SD and the first control input end IN, first control input end IN and the first enable control end SD is connected respectively to CPLD 12, first control output end HO connects the grid of the first field effect transistor Q1, second control output end LO connects the grid of the second field effect transistor Q2, the source electrode of the first field effect transistor Q1 connects high level, the grounded drain of the second field effect transistor Q2, the public point that the drain electrode of the first field effect transistor Q1 is connected with the source electrode of the second field effect transistor Q2 connects one end of transmitting coil WW2, right half-bridge conducting control chip F2 comprises the 3rd control output end HO, 4th control output end LO, second Enable Pin SD and the second control input end IN, second control input end IN and the second enable control end SD is connected respectively to CPLD 12, 3rd control output end HO connects the grid of the 3rd field effect transistor Q3, 4th control output end LO connects the grid of the 4th field effect transistor Q4, the source electrode of the 3rd field effect transistor Q3 connects high level, the grounded drain of the 4th field effect transistor Q4, the public point that the drain electrode of the 3rd field effect transistor Q3 is connected with the source electrode of the 4th field effect transistor Q4 connects the other end of transmitting coil WW2.
Refer to Fig. 2, VA connects 1 pin of chip F1, ct1 signal comes from CPLD and connects 2 pin of F1, FB signal also comes from CPLD and connects 3 pin of F1, DG connects 4 pin of chip F1, diode F12 and resistance R12 is also unified into two end branch roads, its one end connects 5 pin of chip F1, the other end connects the grid of Q2, and 6 pin of chip F1 connect VLGND end, and diode Fd1 and resistance Rf1 is also unified into two end branch roads, its one end connects 7 pin of chip F1, the other end connects the grid of Q1, and 8 pin of chip F1 connect VLPOWER terminal, and connect VLGND terminal by electric capacity Cu21.
Refer to Fig. 2, VA connects 1 pin of chip F2, ct2 signal comes from CPLD and connects 2 pin of F2, FA signal also comes from CPLD and connects 3 pin of F2, DG connects 4 pin of chip F1, diode F13 and resistance R13 is also unified into two end branch roads, its one end connects 5 pin of chip F2, the other end connects the grid of Q3, and 6 pin of chip F2 connect VRGND end, and diode F22 and resistance Rf2 is also unified into two end branch roads, its one end connects 7 pin of chip F2, the other end connects the grid of Q4, and 8 pin of chip F2 connect VRPOWER terminal, and connect VRGND terminal by electric capacity Cu31.
Refer to Fig. 2, implementation procedure of the present invention comprises following step:
(1): on the upside of left bridge with right bridge on the downside of conducting (transmitting coil forward obtains electric)
There is chip F1 in control PWM, tripod Enable Pin (SD) is high level, and wave form output is with input crus secunda IN input, control IN is input as high level, Q1 (mosfet) high level, Q2 (mosfet) low level, makes conducting on the upside of left bridge.There is chip F2 in control PWM, tripod Enable Pin (SD) is high level, and wave form output is with input crus secunda IN input, and control IN is input as low level, Q3 (mosfet) low level, Q4 (mosfet) high level makes conducting on the downside of right bridge.Obtain electric at transmission frequency 1/4th cycle internal emission line circle forward like this.
(2): on the upside of left bridge with right bridge on the downside of not conducting (transmitting coil forward gap gathers)
Transmitting coil is after transmission frequency 1/4th cycle internal emission line circle forward obtains electric completing.There is chip F1 in control PWM, tripod Enable Pin (SD) is low level, makes Q1 (mosfet) low level, and Q2 (mosfet) low level makes the not conductings of left bridge upper and lower sides.There is chip F2 in control PWM, tripod Enable Pin (SD) is low level, makes Q3 (mosfet) low level, and Q4 (mosfet) low level makes the not conductings of right bridge upper and lower sides.In transmission frequency 1/4th cycle of such generation, coil forward gap occurs, namely receiving coil receives the secondary magnetic field electric signal produced.AD sampling is carried out by Fig. 3 mode, specify 40 centre times, and collection point, centre time both sides, such as shown each collection point gathers below: T4, T3 on the left of centre time T, T2, T1 gather, on the right side of centre time T, T1 ', T2 ', T3 ', T4 ' gather, average out to centre time T one forward gap image data after it is cumulative.
(3): on the downside of left bridge with right bridge on the upside of conducting (transmitting coil reverse electric)
There is chip F1 in control PWM, tripod Enable Pin (SD) is high level, and wave form output is with input crus secunda IN input, control IN is input as low level, Q1 (mosfet) low level, Q2 (mosfet) high level, makes conducting on the downside of left bridge.There is chip F2 in control PWM, tripod Enable Pin (SD) is high level, and wave form output is with input crus secunda IN input, and control IN is input as high level, Q3 (mosfet) high level, Q4 (mosfet) low level makes conducting on the upside of right bridge.Electricly reverse at transmission frequency 1/4th cycle internal emission line circle like this.
(4): on the upside of left bridge with right bridge on the downside of not conducting (transmitting coil backlass gathers)
Transmitting coil is after transmission frequency 1/4th cycle internal emission line circle forward obtains electric completing.There is chip F1 in control PWM, tripod Enable Pin (SD) is low level, makes Q1 (mosfet) low level, and Q2 (mosfet) low level makes the not conductings of left bridge upper and lower sides.There is chip F2 in control PWM, tripod Enable Pin (SD) is low level, makes Q3 (mosfet) low level, and Q4 (mosfet) low level makes the not conductings of right bridge upper and lower sides.In transmission frequency 1/4th cycle of such generation, coil forward gap occurs, namely receiving coil receives the secondary magnetic field electric signal produced.Refer to Fig. 4, return fixed acquisition method point to gather equally by (2) step, T4, T3 on the left of centre time T, T2, T1 gather, on the right side of centre time T, T1 ', T2 ', T3 ', T4 ' gather, and after it is cumulative, average out to centre time T oppositely gathers gap data together.
Refer to Fig. 1, in one embodiment, described electromagnetic instrument also comprises the touch-screen 16 for man-machine interaction, and described touch-screen 16 is electrically connected with described microprocessor 10.
Refer to Fig. 1, in one embodiment, described electromagnetic instrument also comprises usb communication interface 17, and described usb communication interface 17 is electrically connected with described microprocessor 10.
In one embodiment, described electromagnetic instrument also comprises the rechargeable battery pack 18 for mobile power supply.
Refer to Fig. 3, the transient electromagnetic signal processing method of the embodiment of the present invention, comprises the following steps:
A. the electromagnetic wave of real time emission modular spacing periodic emission two type, a kind of adopts electromagnetic wave for real, another kind ofly adopts electromagnetic wave for sky;
B. two kinds of electromagnetic wave signals of Real-time Collection module real-time reception gap periods transmitting, and send into CPLD;
C. CPLD is sent in microprocessor by Internal Control Bus IBC and is processed, and microprocessor carries out difference operation to receive two kinds of electromagnetic wave signals, draws operation result.
Refer to Fig. 5, in one embodiment, in step a, the described reality waveform adopted in electromagnetic one-period is square-wave signal, and the described sky waveform adopted in electromagnetic one-period is silent signal.
In one embodiment, also comprise after described step c and microprocessor carried out the operation result that difference operation obtains and send into by USB the step that on-the site analysis software obtains geological analysis figure.
In one embodiment, described CPLD adopts MAX1270 high-speed figure response process chip.MAX1270CPLD carries out Real-time Collection, and MAX1270 is high-speed figure response process chip, and its speed can reach 5ns and respond corresponding digital signal, in high frequency acquisition system, corresponding single-chip microcomputer and other processor, its hardware structure is different, and it realizes seamless acquisition system.
In one embodiment, described microprocessor adopts high-end ARM2440 high-speed computation process chip.Use high-end arm processor, its model is arm2440, high-speed computation processing power, and it makes up MAX1270CPLD, and high-speed computation accounts for resource, and software architecture is not easy the inferior positions such as process.Whole software and hardware architecture, its realization reaches seamless process, and it achieves at a high speed, Real-time Collection, high-speed computation order ground.Acquire and process 500ns collection signal, 1us collection signal before contrast, has had very much progress.
Refer to Fig. 5, the present invention adopts the integration window multi-point sampling at former Sampling Integral device, is then averaged the method for output.Early stage center window interval is less, and frequency acquisition is higher, and then center window interval increases gradually, and sampling interval becomes comb.Multiple repairing weld in window region, according to formula
vi is each sampled data in same window, and n is each sampled point, according to V
iobtain the standard deviation of window, it is deviation average scope
each sampled value of each window rejects deviation average by above-mentioned formula, and remove random interference, remaining value adds up, and divided by the number that it is remaining, it is the value of this window.Which enhance anti-interference ability.According to stacking fold multi collect same observation station data, then according to formula
vi is end value sampled data (it is number of channels sampled value) in a window, and n is sample and stack number of times, according to V
iobtain the standard deviation in each road, it is deviation average scope
each sampled value of each number of channels rejects deviation average by above-mentioned formula, and remove random interference, remaining value adds up, and divided by the number that it is remaining, it is the value of this number of channels.Which enhance anti-interference ability.
Collection center time point image data in forward gap of the present invention deducts forward sky and adopts gap collection center time point collection, and backlass collection center time point deducts reverse sky and adopts gap collection center time point, after obtaining processing data this twice, then subtracts each other mutually.Mutual like this to having removed low frequency interference, also mutual to having removed certain high frequency interference.Contrast does not have sky to adopt gap, and its anti-interference improves greatly.
The invention has the advantages that: in conjunction with software and hardware technology, use high-end 32 arm processors, realize high-speed computation, use CPLD to carry out Real-time Collection and real time emission simultaneously have greater advance to detection geology resistivity situation.
The present invention has following characteristics:
(1): man-machine interface is formed, user's select transmit frequency and other seed ginseng number.
(2): ARM2440 sends to CPLD1270 emission parameter and gathers each point time.
(3): CPLD1270 is according to emission parameter, and control MOSFET is forward and reverse conduction and cut-off successively, obtains needing transmitted waveform.
(4): CPLD1270 takes data in time slot under transmission frequency.
(5): launch and after having gathered, CPLD1270 use serial ports transmit completion signal to ARM2440.
(6): ARM2440 obtains after serial ports completes letter, and control data bus obtains image data.
: ARM2440 shows image data, and preserve data etc. (7).
(8): user uses flash disk to obtain image data, on-the site analysis software is used to obtain geological analysis figure.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. a mine transient electromagnetic instrument, it is characterized in that: comprise microprocessor, Internal Control Bus IBC, CPLD, real time emission module, Real-time Collection module and display module, described microprocessor is electrically connected with CPLD by Internal Control Bus IBC, described real time emission module, Real-time Collection module are electrically connected with CPLD respectively, and described display module is connected with microprocessor;
Described real time emission module comprises emission controlling unit and transmitting coil, and the input end of emission controlling unit connects CPLD, and the output terminal of emission controlling unit connects transmitting coil;
Described Real-time Collection module comprises collection control module and collection coil, and the input end gathering control module connects CPLD, and the output terminal of collection control module connects collection coil;
Described emission controlling unit comprises left half-bridge conducting control chip, right half-bridge conducting control chip, the first field effect transistor, the second field effect transistor, the 3rd field effect transistor and the 4th field effect transistor, first field effect transistor and the second field effect transistor form left half-bridge structure, and the 3rd field effect transistor and the 4th field effect transistor form right half-bridge structure;
Left half-bridge conducting control chip comprises the first control output end, the second control output end, the first Enable Pin and the first control input end, first control input end and the first enable control end are connected respectively to CPLD, first control output end connects the grid of the first field effect transistor, second control output end connects the grid of the second field effect transistor, the source electrode of the first field effect transistor connects high level, the grounded drain of the second field effect transistor, the public point that the drain electrode of the first field effect transistor is connected with the source electrode of the second field effect transistor connects one end of transmitting coil;
Right half-bridge conducting control chip comprises the 3rd control output end, the 4th control output end, the second Enable Pin and the second control input end, second control input end and the second enable control end are connected respectively to CPLD, 3rd control output end connects the grid of the 3rd field effect transistor, 4th control output end connects the grid of the 4th field effect transistor, the source electrode of the 3rd field effect transistor connects high level, the grounded drain of the 4th field effect transistor, the public point that the drain electrode of the 3rd field effect transistor is connected with the source electrode of the 4th field effect transistor connects the other end of transmitting coil.
2. mine transient electromagnetic instrument according to claim 1, is characterized in that: described electromagnetic instrument also comprises the touch-screen for man-machine interaction, and described touch-screen is electrically connected with described microprocessor.
3. mine transient electromagnetic instrument according to claims 1 to 2, it is characterized in that: described electromagnetic instrument also comprises the usb communication interface carrying out the operation result that difference operation obtains for deriving described microprocessor, described usb communication interface is electrically connected with described microprocessor.
4. the mine transient electromagnetic instrument according to any one of claim 1 ~ 2, is characterized in that: described electromagnetic instrument also comprises the rechargeable battery pack for mobile power supply.
5. adopt a transient electromagnetic signal processing method for mine transient electromagnetic instrument according to claim 1, it is characterized in that, comprise the following steps:
A. the electromagnetic wave of real time emission modular spacing periodic emission two type, a kind of adopts electromagnetic wave for real, another kind ofly adopts electromagnetic wave for sky;
B. two kinds of electromagnetic wave signals of Real-time Collection module real-time reception gap periods transmitting, and send into CPLD;
C. CPLD is sent in microprocessor by Internal Control Bus IBC and is processed, and microprocessor carries out difference operation to receive two kinds of electromagnetic wave signals, draws operation result;
In step a, the described reality waveform adopted in electromagnetic one-period is square-wave signal, and the described sky waveform adopted in electromagnetic one-period is silent signal.
6. transient electromagnetic signal processing method according to claim 5, is characterized in that, also comprises microprocessor being carried out the operation result that difference operation obtains and sending into by USB the step that on-the site analysis software obtains geological analysis figure after described step c.
7. the transient electromagnetic signal processing method according to any one of claim 5 ~ 6, is characterized in that, described CPLD adopts MAX1270 high-speed figure response process chip.
8. the transient electromagnetic signal processing method according to any one of claim 5 ~ 6, is characterized in that, described microprocessor adopts high-end ARM2440 high-speed computation process chip.
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| CN103308951B (en) * | 2013-06-03 | 2016-01-20 | 中国地质大学（武汉） | The control system of transient electromagnetic signal acquisition instrument of handheld pseudo random |
| CN103499841B (en) * | 2013-09-18 | 2016-04-13 | 安徽惠洲地质安全研究院股份有限公司 | Hole, lane transient electromagnetic device and measuring method |
| CN105549097B (en) * | 2015-12-22 | 2017-09-15 | 吉林大学 | A kind of transient electromagnetic signal power frequency and its harmonic wave interference removing method and device |
| CN110888172B (en) * | 2019-11-11 | 2021-09-14 | 吉林大学 | Coarse medium electromagnetic response resistivity imaging method based on neural network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766775A (en) * | 2005-09-13 | 2006-05-03 | 中国电力科学研究院 | Regulation board of static var compensator based on floating-point number DSP and FPGA |
| CN1936621A (en) * | 2006-10-08 | 2007-03-28 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined instrument and method |
| CN201548703U (en) * | 2009-11-06 | 2010-08-11 | 湖南继善高科技有限公司 | Pseudo-random signal transmitter |
| CN202003036U (en) * | 2011-03-10 | 2011-10-05 | 福州勘达源电子科技有限公司 | Mine transient electromagnetic instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201666955U (en) * | 2009-12-14 | 2010-12-08 | 福州华虹智能科技开发有限公司 | Novel mining transient electromagnetic instrument |
-
2011
- 2011-03-10 CN CN201110057684.5A patent/CN102681018B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766775A (en) * | 2005-09-13 | 2006-05-03 | 中国电力科学研究院 | Regulation board of static var compensator based on floating-point number DSP and FPGA |
| CN1936621A (en) * | 2006-10-08 | 2007-03-28 | 吉林大学 | Nuclear magnetic resonance and transient electromagnetic combined instrument and method |
| CN201548703U (en) * | 2009-11-06 | 2010-08-11 | 湖南继善高科技有限公司 | Pseudo-random signal transmitter |
| CN202003036U (en) * | 2011-03-10 | 2011-10-05 | 福州勘达源电子科技有限公司 | Mine transient electromagnetic instrument |
Non-Patent Citations (2)
| Title |
|---|
| 《一种便携式多通道瞬变电磁探测系统的设计与实现》;王远;《吉林大学硕士学位论文》;20100630;第6、8、17、18页，图2.1、2.2、4.1 * |
| 《基于DSP的瞬变电磁数据采集系统》;刘丽萍 等;《吉林大学学报》;20060331;第24卷(第2期);全文 * |
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|---|---|
| CN102681018A (en) | 2012-09-19 |
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