CN101303415B - Combined type field source transmitting apparatus with field source mixing electromagnetical method - Google Patents
Combined type field source transmitting apparatus with field source mixing electromagnetical method Download PDFInfo
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- CN101303415B CN101303415B CN2008100508653A CN200810050865A CN101303415B CN 101303415 B CN101303415 B CN 101303415B CN 2008100508653 A CN2008100508653 A CN 2008100508653A CN 200810050865 A CN200810050865 A CN 200810050865A CN 101303415 B CN101303415 B CN 101303415B
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Abstract
The invention discloses a combination source of field emitting device by an HSSMT. A high-voltage inverter bridge circuit is connected or disconnected with an emitting antenna by a switch; the emitting antenna is connected with a resonant capacitor in series to compose a resonant circuit; the high-voltage inverter bridge circuit is connected with an electrode board by the switch, which can not only emit electric property source signals but also emit magnetic source signals; when in use, the high-voltage inverter bridge circuit and the electrode board can be combined to emit a broad band signal of 0.1Hz to 100KHz according to concrete needs, thus meeting the need of different detecting depths; the electrode board is utilized to serve as the electrode of an electric property source to increase contact area with the ground, and the electrode and the ground have good coupling property, thus reducing grounding resistance and causing the electric property source to be capable of providing signals of higher power. Emitting field source signals of different properties by a set of equipment can be realized by the design of the high-voltage inverter bridge circuit and a double-pole-double-throw switch; the improvement of electrode emitting modes effectively reduces grounding resistance value, increases detecting depth and detecting range, has flexible application and convenient use, improves working efficiency and reduces equipment investment.
Description
Technical field:
The present invention relates to a kind of geophysical survey emitter, especially electromagnetic prospecting and mix field source combined type field source emitter.
Background technology:
Mixed field source electromagnetic prospecting is a kind of important method in the geophysical exploration method, and this method uses manual type to launch the electromagnetic wave of certain frequency range, can remedy the weak and low deficiency of frequency range of natural electromagnetic field signal.Because service condition and using method is different, existing electrical source emitter is used in controllable source audio-frequency magnetotelluric magnetic method more, the frequency range of using is at 0.1Hz-10KHz, what use is the less cylindrical electrode of diameter, cause that stake resistance is big, transmitter current is little, the emissive power of system is reduced.The magnetic source emitter is owing to be subjected to the components and parts performance impact and be used in high band 1KHz-100KHz more, and existing magnetic source system can not launch the electrical source signal of low frequency.When the higher electrical source of transmission frequency, because the supply voltage restriction, the electric current of emission can be very low, do not satisfy the normal use in the engineering
The EH4 Electro-magnetic Launcher System that existing U.S. Lao Lei industrial group produces is magnetic source emission separately, and transmission frequency 1000Hz-75000Hz can only use at high band.
The high-power multifrequency intelligence of the mixed field source of Chinese Academy of Sciences's geophysics geochemical exploration Research Institute emission coefficient is electrically source emission separately, its transmission frequency 1024Hz-1/1024Hz, and can not satisfy frequency is the above application of 1KHz.The mixed field source emission coefficient of Jilin University's development, similar with the EH4 emission coefficient of the U.S., can only the magnetic source signal of transmission frequency more than 1KHz.
Be designed to electrical source and magnetic source independently that system can waste lot of manpower and material resources, cause the wasting of resources.Then have to use inconvenient for the electrical source of using cylinder electrode with the high-power generator power supply because of the big emission voltage of needs.At present yet there are no the report that can launch electrical source and magnetic source composite set simultaneously both at home and abroad, also not seeing has the electrical source report that utilizes the pole plate mode to power.
Summary of the invention:
Purpose of the present invention just is at above-mentioned the deficiencies in the prior art, and a kind of combined type field source transmitting apparatus with field source mixing electromagnetical method that is applicable to is provided,
The objective of the invention is to realize in the following manner:
High-voltage inverted bridge circuit 1 connects by double-point double-throw switch 2 or disconnection cross quadrature emitting antenna 5, cross quadrature emitting antenna 5 constitutes resonant tank by lead serial connection resonant capacitance group 3, cross quadrature emitting antenna 5 is to be supported by emitting antenna skeleton 6, high-voltage inverted bridge circuit 1 is connected with resonant capacitance relay gate group 4 by double-point double-throw switch 2 or disconnects, connect cross quadrature emitting antenna 5 during connection simultaneously, disconnect cross quadrature emitting antenna 5 during disconnection simultaneously, after disconnecting cross quadrature emitting antenna 5, high-voltage inverted bridge circuit 1 is by double-point double-throw switch 2 connection electrode plates 7 and battery lead plate 14, battery lead plate 7 and battery lead plate 14 and the earth 8 couplings, first battery lead plate 7 and second battery lead plate 14 of high-voltage inverted bridge circuit 1 by double-point double-throw switch 2 and coupling the earth 8 launched electrical source signal when connecting, and launches the magnetic source signal when high-voltage inverted bridge circuit 1 is connected with resonant capacitance group 3 by electric capacity relay gate group 4 by double-point double-throw switch 2.
Purpose of the present invention can also realize in the following manner:
High-voltage inverted bridge circuit 1 is made up of four Q1, Q2, the vertical surperficial field effect transistor 10 of Q3, Q4, the vertical surperficial field effect transistor 10 of Q2, Q3 connects forward conduction signal 11, the vertical surperficial field effect transistor 10 of Q1, Q4 connects reverse-conducting signal 12, be provided with inversion bridge circuit out splice going splice 13 with Q1 and Q2 connecting line on the Q3 of vertical surperficial field effect transistor 10 and the Q4 connecting line, inverter bridge power connection 9 is connected on four Q1, Q2, the vertical surperficial field effect transistor 10 of Q3, Q4 to high-voltage inverted bridge circuit 1 power supply.Cross quadrature emitting antenna 5 is the tours antenna that four circle lead coilings form.Battery lead plate 7 and battery lead plate 14 are the copper thin plate, and emitting antenna skeleton 6 is to be made by the organic non-metal material.Resonant capacitance group 3 is made up of the electric capacity of ten different appearance values of C0-C9.Resonant capacitance relay gate 4 is made up of ten resonant capacitance relay gates of K0-K9.The appearance value of C0-C9 is 0.022 microfarad-100 microfarad in the resonant capacitance group 3, chooses capacitance between maximum and the minimum successively according to frequency values.
Beneficial effect: combined type field source emitter has improved electromagnetic prospecting efficient, utilize a cover field source emitter to realize emission field source of different nature, the characteristics on frequency characteristic based on electrical source and magnetic source, can make emitter launch the broadband signal of 0.1Hz-100KHz, satisfy the needs of different investigation depths; Utilizing pole plate to do electrical source electrode has increased contact area with the earth, and electrode and the earth coupling are good, have reduced stake resistance, make electrical source that more powerful signal can be provided.The design of high-voltage inverted bridge circuit and double-point double-throw switch, realized that a set of equipment launches field source signal of different nature, the improvement of electrode radiation pattern effectively reduces grounding resistance, investigation depth and investigative range have been increased, applying flexible, easy to use, improve work efficiency, reduced equipment investment.
Accompanying drawing and description of drawings:
Fig. 1 is the combined type field source emitter synoptic diagram that mixes the field source electromagnetic method
Fig. 2 is the circuit diagram of the high-voltage inverted bridge circuit 1 of Fig. 1
1 high-voltage inverted bridge circuit, 2 double-point double-throw switchs, 3 resonant capacitance groups, 4 resonant capacitance relay gates, 5 cross quadrature emitting antennas, 6 emitting antenna skeletons, 7 first battery lead plates, 8 ground, 9 inverter bridge power connections, 10 vertical surperficial field effect transistor (VMOS pipe), 11 forward conduction signals, 12 reverse-conducting signals, 13 inversion bridge circuit out splice going splices, 14 second battery lead plates.
Embodiment:
Be described in further detail below in conjunction with drawings and Examples:
High-voltage inverted bridge circuit 1 connects by double-point double-throw switch 2 or disconnection cross quadrature emitting antenna 5, cross quadrature emitting antenna 5 constitutes resonant tank by lead serial connection resonant capacitance group 3, cross quadrature emitting antenna 5 is to be supported by emitting antenna skeleton 6, high-voltage inverted bridge circuit 1 is connected with resonant capacitance relay gate group 4 by double-point double-throw switch 2 or disconnects, connect cross quadrature emitting antenna 5 during connection simultaneously, disconnect cross quadrature emitting antenna 5 during disconnection simultaneously, after disconnecting cross quadrature emitting antenna 5, high-voltage inverted bridge circuit 1 is by double-point double-throw switch 2 connection electrode plates 7 and battery lead plate 14, battery lead plate 7 and battery lead plate 14 and the earth 8 couplings, battery lead plate 7 and the battery lead plate 14 of high-voltage inverted bridge circuit 1 by double-point double-throw switch 2 and the earth 8 couplings launched electrical source signal when connecting, and launches the magnetic source signal when high-voltage inverted bridge circuit 1 is connected with resonant capacitance group 3 by electric capacity relay gate group 4 by double-point double-throw switch 2.
High-voltage inverted bridge circuit 1 is made up of four Q1, Q2, the vertical surperficial field effect transistor 10 of Q3, Q4, the vertical surperficial field effect transistor 10 of Q2, Q3 connects forward conduction signal 11, the vertical surperficial field effect transistor 10 of Q1, Q4 connects reverse-conducting signal 12, be provided with inversion bridge circuit out splice going splice 13 with Q1 and Q2 connecting line on the Q3 of vertical surperficial field effect transistor 10 and the Q4 connecting line, inversion bridge circuit out splice going splice 13 is connected with double-point double-throw switch 2, and inverter bridge power connection 9 is connected on four Q1, Q2, the vertical surperficial field effect transistor 10 of Q3, Q4 to high-voltage inverted bridge circuit 1 power supply.Cross quadrature emitting antenna 5 is the tours antenna that four circle lead coilings form.Battery lead plate 7 and battery lead plate 14 are the copper thin plate, and emitting antenna skeleton 6 is to be made by plastics or resin.Resonant capacitance group 3 is made up of the electric capacity of ten different appearance values of C0-C9.Resonant capacitance relay gate 4 is made up of ten resonant capacitance relay gates of K0-K9.Ten resonant capacitance relay gates 4 of the electric capacity of ten different appearance values of C0-C9 and K0-K9 are corresponding one by one, and the appearance value of C0-C9 is 0.022 microfarad-100 microfarad in the resonant capacitance group 3, choose capacitance between maximum and the minimum successively according to frequency values.
High-voltage inverted bridge circuit 1 utilizes four vertical surperficial field effect transistor 10 of high-tension high-power to realize, more than the maximum withstand voltage 500V, more than the maximum current 70A, promptly can satisfy the big voltage request in electrical source, also can satisfy the big current requirements of magnetic source.Alternately open and close by vertical surperficial field effect transistor 10 produces the symmetrical square wave with positive-negative polarity.The crest voltage of high-voltage inverted bridge circuit 1 output signal is consistent with supply voltage, when using electrical source field source, this signal directly is wired on the electrode pad 7, because electrode pad 7 and the earth 8 couplings, be equivalent to directly this signal be infeeded the earth 8, thereby realize the emission of electrical source.
When the applied magnetic source, the inverter signal of high-voltage inverted bridge circuit 1 output is received on the resonant capacitance group 3, and resonant capacitance group 3 is cascaded by relay 4 and cross orthogonal loop aerials 5.Cross orthogonal loop aerials 5 forms by four circle lead coilings, form the LC resonant circuit with resonant capacitance group 3 back that is serially connected, in case,, can realize by the size that changes the capacitance that is connected in series with it if revise the resonance frequency of LC because its inductance value of antenna moulding is fixed substantially.Resonant capacitance group 3 is made up of the electric capacity that 10 appearance values vary in size, choose capacitance between maximum and the minimum successively according to frequency values, the electric capacity of wherein low-capacitance is by the maximum frequency decision that will launch, minimum frequency then determined all capacitances and size; Choosing of other appearance values then according to mixing the desired frequency values decision of field source electromagnetic method.As frequency values is 60.6KHz-0.9KHz, the appearance value of the resonant capacitance group 3 that correspondence is chosen is: the corresponding 60.6KHz frequency of 0.022 microfarad, 0.033 the corresponding 49.4KHz frequency of microfarad, the corresponding 22.2KHz frequency of 0.163 microfarad, the corresponding 17KHz frequency of 0.28 microfarad, 0.63 the corresponding 11.3KHz frequency of microfarad, 3.5 the corresponding 4.8KHz frequency of microfarad, the corresponding 3.7KHz frequency of 6 microfarads, the corresponding 2KHz frequency of 20 microfarads, the corresponding 1.27KHz frequency of 50 microfarads, the corresponding 0.9KHz frequency of 100 microfarads.
When the centre frequency of the frequency of the symmetrical square wave of high-voltage inverted bridge circuit 1 output and the resonant circuit of cross orthogonal loop aerials 5 and resonance capacitance group 3 formations is consistent, the electric current maximum that the fundamental frequency of symmetrical square wave forms in the loop, other radio-frequency components then by filtering, are launched single frequency sinusoidal ripple signal by antenna owing to can not produce resonance at last.Can realize same set of equipment emission heterogeneity signal by double-point double-throw switch 2 switchings, direct supply is connected on four vertical surperficial field effect transistor 10 through joint 9, four vertical surperficial field effect transistor 10 are by two path control signal 11,12 its alternate conduction of control, inversion bridge circuit out splice going splice 13 is connected with double-point double-throw switch 2, the positive and negative symmetrical square wave signal that output terminal 13 output frequencies are controlled, this signal is given double-point double-throw switch 2, when double-point double-throw switch 2 switches to electrical source, inverter signal is switched on the battery lead plate 7 of ground connection 8, launches electrical source signal.When double-point double-throw switch 2 switches to magnetic source, high-voltage inverted bridge circuit 1 output is switched on the resonant capacitance group 3, resonant capacitance group 3 is connected with cross orthogonal antenna 5, because cross orthogonal antenna 5 is inductance characteristic, form the LC resonant circuit with resonant capacitance group 3,, change the resonance frequency of this resonant circuit by changing the array mode of resonant capacitance group 3, when the frequency of resonance frequency and inverter signal is consistent, make the electric current maximum of emission, reach purpose to spatial emission magnetic source signal.Through realizing launching field source signal of different nature after double-point double-throw switch 2 selections, improved electrode radiation pattern can effectively reduce grounding resistance simultaneously, realizes improving the purpose that field source is used versatility and efficient.
Claims (6)
1. combined type field source transmitting apparatus with field source mixing electromagnetical method, it is characterized in that, high-voltage inverted bridge circuit (1) connects by double-point double-throw switch (2) or disconnection cross quadrature emitting antenna (5), cross quadrature emitting antenna (5) constitutes resonant tank by lead serial connection resonant capacitance group (3), cross quadrature emitting antenna (5) is to be supported by emitting antenna skeleton (6), high-voltage inverted bridge circuit (1) is connected with resonant capacitance relay gate group (4) by double-point double-throw switch (2) or disconnects, connect cross quadrature emitting antenna (5) during connection simultaneously, disconnect cross quadrature emitting antenna (5) during disconnection simultaneously, after disconnecting cross quadrature emitting antenna (5), high-voltage inverted bridge circuit (1) connects first battery lead plate (7) and second battery lead plate (14) by double-point double-throw switch (2), first battery lead plate (7) and second battery lead plate (14) and the earth (8) coupling, first battery lead plate (7) and second battery lead plate (14) of high-voltage inverted bridge circuit (1) by the coupling of double-point double-throw switch (2) and the earth (8) launched electrical source signal when connecting, and high-voltage inverted bridge circuit (1) passes through resonant capacitance relay gate group (4) by double-point double-throw switch (2) and launches the magnetic source signal when being connected with resonant capacitance group (3); High-voltage inverted bridge circuit (1) is by four vertical surperficial field effect transistor (Q1, Q2, Q3, Q4) form, second vertical surperficial field effect transistor (Q2) wherein, the 3rd vertical surperficial field effect transistor (Q3) connects forward conduction signal (11), first vertical surperficial field effect transistor (Q1), the 4th vertical surperficial field effect transistor (Q4) connects reverse-conducting signal (12), on the connecting line of the 3rd vertical surperficial field effect transistor (Q3) and the 4th vertical surperficial field effect transistor (Q4), and be equipped with inversion bridge circuit out splice going splice (13) on the connecting line of first vertical surperficial field effect transistor (Q1) and second vertical surperficial field effect transistor (Q2), inversion bridge circuit out splice going splice (13) is connected with double-point double-throw switch (2), and inverter bridge power connection (9) is connected to four vertical surperficial field effect transistor (Q1, Q2, Q3, Q4) upward power to high-voltage inverted bridge circuit (1).
2. according to the described combined type field source transmitting apparatus with field source mixing electromagnetical method of claim 1, it is characterized in that cross quadrature emitting antenna (5) is the tours antenna that four circle lead coilings form.
3. according to the described combined type field source transmitting apparatus with field source mixing electromagnetical method of claim 1, it is characterized in that first battery lead plate (7) and second battery lead plate (14) are the copper thin plate, emitting antenna skeleton (6) is to be made by the organic non-metal material.
4. according to the described combined type field source transmitting apparatus with field source mixing electromagnetical method of claim 1, it is characterized in that resonant capacitance group (3) is made up of the electric capacity of ten different appearance values of C0-C9.
5. according to the described combined type field source transmitting apparatus with field source mixing electromagnetical method of claim 1, it is characterized in that resonant capacitance relay gate group (4) is made up of ten resonant capacitance relay gates of K0-K9.
6. according to the described combined type field source transmitting apparatus with field source mixing electromagnetical method of claim 5, it is characterized in that the appearance value of C0-C9 is 0.022 microfarad-100 microfarad in the resonant capacitance group (3), choose capacitance between maximum and the minimum successively according to frequency values.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100508653A CN101303415B (en) | 2008-06-24 | 2008-06-24 | Combined type field source transmitting apparatus with field source mixing electromagnetical method |
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| CN2008100508653A CN101303415B (en) | 2008-06-24 | 2008-06-24 | Combined type field source transmitting apparatus with field source mixing electromagnetical method |
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| CN101303415B true CN101303415B (en) | 2010-06-23 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807864B (en) * | 2010-03-25 | 2012-05-30 | 吉林大学 | Emission current subdivision control circuit based on magnetic source electromagnetic method |
| CN102176062B (en) * | 2011-02-23 | 2013-05-15 | 北京南风科创应用技术有限公司 | Multifunctional transmitter |
| CN103973147B (en) * | 2014-05-31 | 2017-01-18 | 吉林大学 | Multi-level high-voltage grounded source electromagnetic transmitting circuit |
| CN106208734A (en) * | 2016-08-22 | 2016-12-07 | 中国科学院电子学研究所 | Transient electromagnetic exploration system transmitter |
| WO2019084862A1 (en) * | 2017-11-02 | 2019-05-09 | 中国科学院电子学研究所 | Air code hybrid-source electromagnetic detection system |
| CN109188530A (en) * | 2018-09-21 | 2019-01-11 | 安徽惠洲地质安全研究院股份有限公司 | More exploration geophysical field signal intelligent electromagnetic launch systems and method |
| CN110187394B (en) * | 2019-06-20 | 2020-11-27 | 甘肃省地震局（中国地震局兰州地震研究所） | Method and device for acquiring formation resistivity anisotropy by double-field source electromagnetic sounding method |
| CN110658565B (en) * | 2019-08-16 | 2022-03-29 | 中国石油天然气集团有限公司 | Self-adaptive stepless variable-capacitance resonance system of electromagnetic transmitting antenna between wells and working method of self-adaptive stepless variable-capacitance resonance system |
| CN112255692B (en) * | 2020-10-16 | 2021-12-03 | 中国矿业大学 | Frequency domain electric source mine advanced electromagnetic detection method |
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