Vibration and magnetism integrated transmitting transducer
The integrated seismomagnetic transducer enables the synchronous excitation and acquisition of seismic and electromagnetic waves, solving the problems of high exploration costs and long cycles in existing technologies, thereby improving exploration accuracy and reducing costs.
Patent Information
- Application Number
- CN202510867863.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-11-07
AI Technical Summary
In existing technologies, the signal transmitting ends of seismic and electromagnetic exploration instruments cannot achieve true joint imaging and inversion, and require two separate operations, which are costly and time-consuming.
A seismomagnetic integrated transmitting transducer is provided, which combines an integrated seismometer and fluxgate receiver. It achieves synchronous excitation of seismic waves and electromagnetic waves through an electromagnetic pulse synchronous excitation device, and completes synchronous data acquisition in conjunction with the integrated receiver.
It enables simultaneous seismic wave and transient electromagnetic exploration, improving the accuracy and precision of exploration results, reducing exploration costs, and shortening the operation cycle.
Smart Images
Figure CN120908897A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of geophysical exploration, in particular to a seismomagnetic integrated transmitting transducer. BACKGROUND
[0002] The main geophysical exploration methods include seismic and electromagnetic methods. The two methods are based on seismic wave (mechanical wave) and electromagnetic wave principles respectively, and thus different instruments and equipment are used. Both methods can image the underground stratum structure and perform physical property inversion based on wave field data. The former is based on the different seismic wave (especially shear wave) velocities of different strata due to differences in density, while the latter is based on the different electromagnetic wave wave impedances of different strata due to differences in electromagnetic properties (conductivity, magnetic permeability, dielectricity). Both methods have specific advantages in imaging and inversion under different geological conditions and mineral resource exploration, but the imaging and inversion results often have certain differences from actual drilling data.
[0003] At present, in order to improve the exploration accuracy, the geophysical exploration method has developed from single means inversion to multi-means joint inversion. The combination of seismic and electromagnetic methods is the most advantageous joint inversion method, and thus integrated design of seismic exploration and electromagnetic exploration instruments and equipment is required. The main technical solution is to integrate a seismometer (seismic wave sensor) and a magnetometer (such as a fluxgate electromagnetic wave sensor) in the same receiving device, while different devices are still needed for signal emission. Real joint imaging and inversion cannot be achieved from one signal source. On the one hand, even if the integrated receiving end can ensure the consistency of the receiving position, there are errors in the excitation point positions of different sources and electromagnetic wave emission devices during the operation process. On the other hand, two operations of seismic and electromagnetic methods are needed on the same survey line, which is high in cost and long in cycle. SUMMARY
[0004] The present application provides a seismomagnetic integrated transmitting transducer, which can realize synchronous seismic wave and transient electromagnetic exploration by combining the integrated seismometer and fluxgate receiving device.
[0005] To solve the above technical problems, the embodiment of the present application provides a seismic and electromagnetic integrated transmitting transducer, comprising: a transmitting end and a receiving end; the transmitting end comprises a power supply and a Boomer seismic source transducer; wherein the power supply is used for outputting pulse current; the Boomer seismic source transducer comprises a coil and a metal plate; the coil is parallel to the metal plate and has a spacing between the coil and the metal plate; the coil is connected with the output end of the power supply; the receiving end comprises an integrated sensor and a synchronous acquisition system; wherein the integrated sensor is used for detecting vibration signals and magnetic field signals; the synchronous acquisition system is used for synchronously recording the vibration signals and the magnetic field signals detected by the integrated sensor; when the pulse current output by the power supply passes through the coil, the seismic wave excitation and the electromagnetic wave excitation are synchronously triggered; the transducer comprises two working modes; when the area of the coil is smaller than the area of the metal plate, the coil is used as a vibration source, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the coil; when the area of the coil is greater than the area of the metal plate, the metal plate is used as a vibration source, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the metal plate.
[0006] In some example embodiments, when the coil is used as the main vibration source, the Lorentz force is concentrated in the projection area of the coil, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the coil; when the metal plate is used as the main vibration source, the eddy current covers the surface of the metal plate, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the metal plate.
[0007] In some example embodiments, the power supply is a pulse large current power supply; the pulse large current power supply comprises a high-voltage capacitor group, a switching circuit and a control module.
[0008] In some example embodiments, the pulse current output by the power supply is a pulse current with a peak current ≥10kA and a pulse width of 0ms-100ms.
[0009] In some example embodiments, the coil is a planar spiral coil; and the metal plate is a metal plate of high-conductivity material.
[0010] In some example embodiments, the metal plate is an aluminum plate or a copper plate.
[0011] In some example embodiments, the spacing between the metal plate and the coil is ≤1cm.
[0012] In some example embodiments, the Boomer seismic source transducer further comprises an insulating support for supporting the metal plate.
[0013] In some example embodiments, the integrated sensor comprises a seismometer and a fluxgate magnetometer, and the seismometer and the fluxgate magnetometer are sealed in the same housing.
[0014] In some example embodiments, the synchronous acquisition system is a multi-channel data acquisition instrument with GPS time service, for synchronously recording the vibration signals and the magnetic field signals.
[0015] The technical scheme provided by the embodiment of the application has at least the following advantages:
[0016] The application provides a seismic and electromagnetic integrated transmitting transducer, comprising a transmitting end and a receiving end; the transmitting end comprises a power supply and a Boomer seismic transducer; wherein the power supply is used for outputting pulse current; the Boomer seismic transducer comprises a coil and a metal plate; the coil is parallel to the metal plate and has a spacing between the coil and the metal plate; the coil is connected with the output end of the power supply; the receiving end comprises an integrated sensor and a synchronous acquisition system; wherein the integrated sensor is used for detecting vibration signals and magnetic field signals; the synchronous acquisition system is used for synchronously recording the vibration signals and the magnetic field signals detected by the integrated sensor; when the pulse current output by the power supply passes through the coil, the seismic wave excitation and the electromagnetic wave excitation are synchronously triggered; the transducer comprises two working modes; when the area of the coil is smaller than the area of the metal plate, the coil is used as a vibration source, and the seismic wave signals and the electromagnetic wave signals are synchronously excited on the side of the coil; when the area of the coil is greater than the area of the metal plate, the metal plate is used as a vibration source, and the seismic wave signals and the electromagnetic wave signals are synchronously excited on the side of the metal plate.
[0017] The application realizes the integrated transmission of seismic waves and electromagnetic waves through the electromagnetic pulse synchronous excitation device, and completes the synchronous data acquisition in combination with the integrated receiving device. The core of the application is to utilize the coupling mechanism of the Lorentz force effect and the eddy current effect to synchronously generate mechanical vibration (seismic wave) and electromagnetic field (transient electromagnetic wave) on a single excitation source. The application discharges pulse large current by taking the coil as a load, generates eddy current on the metal plate close to the coil, generates vibration according to the electromagnetic force generated according to the Lorentz principle, couples the ground or excites artificial seismic waves in the water body, and simultaneously excites the medium body to generate transient electromagnetic field through the electromagnetic pulse signal emitted by the coil. The method for simultaneously exciting seismic waves and electromagnetic waves based on the electromagnetic pulse principle provided by the application can realize synchronous seismic wave and transient electromagnetic exploration in combination with the integrated seismometer and the magnetic flux gate receiving device. BRIEF DESCRIPTION OF DRAWINGS
[0018] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not limiting to the embodiments, unless otherwise specifically stated, the drawings in the figures do not constitute a proportional limit.
[0019] Figure 1 FIG. 1 is a structural schematic diagram of a seismic and electromagnetic integrated transmitting transducer in mode 1 according to an embodiment of the application.
[0020] Figure 2 FIG. 2 is a structural schematic diagram of a seismic and electromagnetic integrated transmitting transducer in mode 2 according to an embodiment of the application.
[0021] Figure 3A structural schematic diagram of a Boomer seismic source transducer provided by an embodiment of the present application. DETAILED DESCRIPTION
[0022] As known from the background, in order to improve the accuracy of exploration results, geophysical methods develop from single means inversion to multi-means joint inversion, and the combination of seismic and electromagnetic is the most advantageous joint inversion method. The current main technical scheme is to integrate the seismometer and the magnetometer on the same receiving device, and different devices are still needed for signal emission end excitation, and true joint imaging and inversion cannot be realized from one signal source.
[0023] In order to solve the above technical problems, an embodiment of the present application provides a seismic-magnetic integrated emission transducer, which comprises a transmitting end and a receiving end; the transmitting end comprises a power supply and a Boomer seismic source transducer; wherein the power supply is used for outputting pulse current; the Boomer seismic source transducer comprises a coil and a metal plate; the coil is parallel to the metal plate and has a spacing between the coil and the metal plate; the coil is connected with the output end of the power supply; the receiving end comprises an integrated sensor and a synchronous acquisition system; wherein the integrated sensor is used for detecting vibration signals and magnetic field signals; the synchronous acquisition system is used for synchronously recording the vibration signals and the magnetic field signals detected by the integrated sensor; when the pulse current output by the power supply passes through the coil, the seismic wave excitation and the electromagnetic wave excitation are synchronously triggered; the transducer comprises two working modes; when the area of the coil is smaller than the area of the metal plate, the coil is used as a vibration source, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on one side of the coil; when the area of the coil is greater than the area of the metal plate, the metal plate is used as a vibration source, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on one side of the metal plate. The seismic-magnetic integrated emission transducer provided by the present application can realize synchronous seismic wave and transient electromagnetic exploration based on the method of simultaneous excitation of seismic wave and electromagnetic wave based on electromagnetic pulse principle, combined with integrated seismometer and fluxgate receiving device.
[0024] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are proposed in order to make the reader better understand the present application. However, the technical solutions claimed by the present application can be realized even without these technical details and various changes and modifications based on the following embodiments.
[0025] Reference Figure 1 and Figure 2The embodiment of the present application provides a seismic and electromagnetic integrated transmitting transducer, which comprises a transmitting end and a receiving end; the transmitting end comprises a power supply 1 and a Boomer seismic source transducer; wherein the power supply 1 is used for outputting pulse current; the Boomer seismic source transducer comprises a coil 21 and a metal plate 22; the coil 21 is parallel to the metal plate 22 and has a spacing between the coil 21 and the metal plate 22; the coil 21 is connected with the output end of the power supply 1; the receiving end comprises an integrated sensor 3 and a synchronous acquisition system 4; wherein the integrated sensor 3 is used for detecting vibration signals and magnetic field signals; the synchronous acquisition system 4 is used for synchronously recording the vibration signals and the magnetic field signals detected by the integrated sensor 3; when the pulse current output by the power supply 1 passes through the coil 21, the seismic wave excitation and the electromagnetic wave excitation are synchronously triggered.
[0026] The synchronous excitation principle of the seismic and electromagnetic integrated transmitting transducer provided by the present application is as follows: when the pulse current passes through the coil 21, the following two kinds of physical effects are synchronously triggered:
[0027] (1) seismic wave excitation; the current flowing through the coil 21 produces a sudden current, an alternating magnetic field is excited around the coil 21, an induced current, i.e. eddy current, is generated in the magnetic field of the circular metal plate 22. The eddy current generates a repulsive force in the magnetic field to push the metal plate 22 to mechanically vibrate, and interacts with the surrounding medium to form seismic waves radiating outward.
[0028] (2) electromagnetic wave excitation; the current flowing through the coil 21 produces a sudden current, an alternating magnetic field is excited around the coil 21, and then a changing electric field is excited, the two are coupled with each other and propagate in space to form electromagnetic waves. When the area of the metal plate 22 is greater than the area of the coil 21, the metal plate 22 will act as a reflector to enhance the directivity of the electromagnetic field.
[0029] The transducer comprises two working modes, mode 1 (the area of the coil 21 is less than the area of the metal plate 22) and mode 2 (the area of the coil 21 is greater than the area of the metal plate 22); Figure 1 The structural schematic diagram of the seismic and electromagnetic integrated transmitting transducer provided by the present application in mode 1 is shown. When the area of the coil 21 is less than the area of the metal plate 22, the coil 21 is used as a vibration source, and seismic wave signals and electromagnetic wave signals are synchronously excited on one side of the coil 21; Figure 2 The structural schematic diagram of the seismic and electromagnetic integrated transmitting transducer provided by the present application in mode 2 is shown. When the area of the coil 21 is greater than the area of the metal plate 22, the metal plate 22 is used as a vibration source, and seismic wave signals and electromagnetic wave signals are synchronously excited on one side of the metal plate 22.
[0030] The present application discharges pulse large current by taking the coil 21 as a load, generates eddy current on the metal plate 22 close to the coil 21, generates electromagnetic force according to the Lorentz principle to generate vibration, couples the ground or excites artificial seismic waves in the water body, and simultaneously the coil 21 emits electromagnetic pulse signals to excite the medium to generate transient electromagnetic field.
[0031] In some embodiments, as shown in Figure 1 When the coil 21 is the main vibration source, the Lorentz force is concentrated in the projection area of the coil 21, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the coil 21; as shown in Figure 2 When the metal plate 22 is the main vibration source, the eddy current covers the surface of the metal plate, and the seismic wave signal and the electromagnetic wave signal are synchronously excited on the side of the metal plate 22.
[0032] In some embodiments, the power supply 1 is a pulse large current power supply; the pulse large current power supply 1 includes a high-voltage capacitor group, a switching circuit and a control module.
[0033] In some embodiments, the pulse current output by the power supply 1 is a pulse current with a peak current ≥10kA and a pulse width of 0ms-100ms.
[0034] As shown in Figure 3 In some embodiments, the coil 21 is a planar spiral coil; and the metal plate 22 is a metal plate made of high-conductivity material.
[0035] In some embodiments, the metal plate 22 is an aluminum plate or a copper plate.
[0036] In some embodiments, the distance between the metal plate 22 and the coil 21 is ≤1cm.
[0037] Please continue to refer to Figure 3 In some embodiments, the Boomer source transducer further includes an insulating support 23 for supporting the metal plate 22.
[0038] In some embodiments, the integrated sensor 3 includes a seismometer and a fluxgate magnetometer, and the seismometer and the fluxgate magnetometer are sealed in the same housing.
[0039] In some embodiments, the synchronous acquisition system 4 is a multi-channel data acquisition instrument with GPS timing for synchronously recording the vibration signal and the magnetic field signal.
[0040] The present application realizes the integrated transmission of the seismic wave and the electromagnetic wave through the electromagnetic pulse synchronous excitation device, and completes the synchronous data acquisition in combination with the integrated receiving device. The core of the technical scheme of the present application is to utilize the coupling mechanism of the Lorentz force effect and the eddy current effect to synchronously generate mechanical vibration (seismic wave) and electromagnetic field (transient electromagnetic wave) on a single excitation source.
[0041] Compared with the prior art, the seismic-magnetic integrated transmission transducer provided by the present application has the following advantages:
[0042] The application provides a method for simultaneously exciting seismic waves and electromagnetic waves based on an electromagnetic pulse principle, and synchronous seismic wave and transient electromagnetic exploration can be realized by combining an integrated seismometer and a fluxgate receiving device.
[0043] The seismomagnetic integrated transmitting transducer provided by the application has been verified by experiments, and synchronous seismic wave and transient electromagnetic exploration can be realized by receiving signals through the fluxgate sensor and receiving signals through the seismometer.
[0044] According to the technical scheme, the application provides a seismomagnetic integrated transmitting transducer, which comprises a transmitting end and a receiving end, the transmitting end comprises a power supply 1 and a Boomer seismic source transducer, the power supply 1 is used for outputting pulse current, the Boomer seismic source transducer comprises a coil 21 and a metal plate 22, the coil 21 is parallel to the metal plate 22 and has a spacing between the coil 21 and the metal plate 22, the coil 21 is connected with an output end of the power supply 1, the receiving end comprises an integrated sensor 3 and a synchronous acquisition system 4, the integrated sensor 3 is used for detecting vibration signals and magnetic field signals, the synchronous acquisition system 4 is used for synchronously recording the vibration signals and the magnetic field signals detected by the integrated sensor 3, the pulse current output by the power supply 1 is used for synchronously triggering seismic wave excitation and electromagnetic wave excitation when the pulse current passes through the coil 21, the transducer comprises two working modes, when the area of the coil 21 is smaller than the area of the metal plate 22, the coil 21 is used as a vibration source, and seismic wave signals and electromagnetic wave signals are synchronously excited on one side of the coil 21, and when the area of the coil 21 is greater than the area of the metal plate 22, the metal plate 22 is used as a vibration source, and seismic wave signals and electromagnetic wave signals are synchronously excited on one side of the metal plate 22.
[0045] The application realizes integrated transmission of seismic waves and electromagnetic waves by using an electromagnetic pulse synchronous excitation device, and synchronous data acquisition is completed by combining an integrated receiving device. The core of the application is to use the coupling mechanism of the Lorentz force effect and the eddy current effect to synchronously generate mechanical vibration (seismic wave) and electromagnetic field (transient electromagnetic wave) on a single excitation source. The application discharges pulse large current by taking the coil 21 as a load, generates eddy current on the metal plate 22 close to the coil 21, generates vibration according to the electromagnetic force generated according to the Lorentz principle, couples the ground or excites artificial seismic waves in a water body, and simultaneously excites the medium body to generate a transient electromagnetic field by the coil 21 transmitting electromagnetic pulse signals. The method for simultaneously exciting seismic waves and electromagnetic waves based on the electromagnetic pulse principle can realize synchronous seismic wave and transient electromagnetic exploration by combining the integrated seismometer and the fluxgate receiving device.
[0046] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application. Any person skilled in the art can make respective changes and modifications without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be limited by the scope defined by the claims.
Claims
1. A magneto-acoustic integrated transmitting transducer, characterized by The utility model relates to a kind of Boomer seismic source, including: Transmitting end and receiving end; The transmitting end includes power supply and Boomer seismic source transducer;Wherein, the power supply is used to output pulse current;The Boomer seismic source transducer includes coil and metal plate;The coil is parallel with the metal plate and there is spacing between the coil and the metal plate;The coil is connected with the output end of the power supply; The receiving end includes integrated sensor and synchronous acquisition system;Wherein, the integrated sensor is used to detect vibration signal and magnetic field signal;The synchronous acquisition system is used to synchronously record vibration signal and magnetic field signal detected by the integrated sensor; When the pulse current output by the power supply passes through the coil, synchronous trigger seismic wave excitation and electromagnetic wave excitation; The transducer includes two kinds of working modes;When the area of the coil is less than the area of the metal plate, the coil is used as vibration source, and seismic wave signal and electromagnetic wave signal are synchronously excited on the side of the coil;When the area of the coil is greater than the area of the metal plate, the metal plate is used as vibration source, and seismic wave signal and electromagnetic wave signal are synchronously excited on the side of the metal plate.
2. The magneto-acoustic integrated transmitting transducer according to claim 1, characterized in that, When the coil is used as main vibration source, Lorentz force is concentrated in the projection area of the coil, and seismic wave signal and electromagnetic wave signal are synchronously excited on the side of the coil; When the metal plate is used as main vibration source, eddy current covers the surface of the metal plate, and seismic wave signal and electromagnetic wave signal are synchronously excited on the side of the metal plate.
3. The magneto-acoustic integrated transmitting transducer according to claim 1, characterized in that, The power supply is pulse high-current power supply; The pulse high-current power supply includes high-voltage capacitor group, switching circuit and control module.
4. The magneto-acoustic integrated transmitting transducer of claim 1, wherein, The pulse current output by the power supply is pulse current with peak current ≥10kA and pulse width 0ms-100ms.
5. The magneto-acoustic integrated launch transducer of claim 1, wherein, The coil is planar spiral coil, and the metal plate is metal plate of high-conductivity material.
6. The magneto-acoustic integrated transmitting transducer according to claim 5, characterized in that, The metal plate is aluminum plate or copper plate.
7. The magneto-acoustic integrated transmitting transducer of claim 1, wherein, The spacing between the metal plate and the coil is ≤1cm.
8. The magneto-acoustic integrated transmitting transducer of claim 1, wherein, The Boomer seismic source transducer further includes insulating support for supporting the metal plate.
9. The magneto-acoustic integrated launch transducer of claim 1, wherein, The integrated sensor includes seismometer and fluxgate magnetometer, and the seismometer and the fluxgate magnetometer are sealed in the same housing.
10. The magneto-acoustic integrated launch transducer of claim 1, wherein, The synchronous acquisition system is multi-channel data acquisition instrument with GPS time service, to synchronously record vibration signal and magnetic field signal.