CN117031534A - Ultrasonic wave transduction hydrophone applied to water area single-channel seismic reflection wave method - Google Patents
Ultrasonic wave transduction hydrophone applied to water area single-channel seismic reflection wave method Download PDFInfo
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- CN117031534A CN117031534A CN202311079868.0A CN202311079868A CN117031534A CN 117031534 A CN117031534 A CN 117031534A CN 202311079868 A CN202311079868 A CN 202311079868A CN 117031534 A CN117031534 A CN 117031534A
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- hydrophone
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- ultrasonic transducer
- frequency cable
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- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 230000026683 transduction Effects 0.000 title claims abstract description 9
- 238000010361 transduction Methods 0.000 title claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 46
- 238000013016 damping Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 14
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 2
- 230000008676 import Effects 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
- G01V1/186—Hydrophones
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3808—Seismic data acquisition, e.g. survey design
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Acoustics & Sound (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Oceanography (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The application relates to an ultrasonic wave transduction hydrophone applied to a water area single-channel seismic reflection wave method in the technical field of hydrophones, which comprises: an ultrasonic transducer and a high-frequency cable; the ultrasonic transducers are coaxially arranged at intervals, and are connected in parallel; one end of the high-frequency cable is connected with the ultrasonic transducer, and the other end of the high-frequency cable is correspondingly connected with the acquisition equipment; the ultrasonic transducer comprises an outer cylinder, piezoelectric ceramics, a damping block and a matching layer; the application combines the signals of a plurality of ultrasonic transducers into one signal by adopting a mode of combining the ultrasonic transducers, thereby enhancing the real earthquake signal and inhibiting noise, thereby improving the signal quality and increasing the range of receiving the earthquake signal; the hydrophone is small in size and convenient to carry, can be well adapted to arrangement and operation of special occasions, and solves the technical problems of high import cost and difficult import small track distance.
Description
Technical Field
The application relates to the technical field of hydrophones, in particular to an ultrasonic transduction hydrophone applied to a water area single-channel seismic reflection wave method.
Background
The single-channel seismic reflection wave method exploration in a water area is a common geophysical exploration method and is used for detecting the characteristics of underwater geological structures and sediments; the method utilizes reflection and refraction phenomena of seismic waves in the underground to acquire information of an underground structure by placing a sound source and a hydrophone under the water. The single-channel seismic reflection wave method exploration in the water area has wide application in the fields of marine placer reserve evaluation, submarine geological investigation, geological investigation of cross-sea bridges and ports and wharfs, for example, the single-channel seismic reflection wave method exploration in the water area can help to determine the position and scale of the marine placer, evaluate submarine geological conditions and provide important basis for planning and designing ocean engineering.
The single-channel seismic reflection wave method exploration equipment of the water area adopted in the prior art is mainly imported equipment abroad, and is high in price, and the small-channel hydrophone is difficult to import due to the fact that the small-channel hydrophone is in a forbidden list in the United states; in addition, the traditional water area single-channel seismic reflection wave method has large equipment, the linear length of an acquisition unit is generally more than 20 meters, only dragging construction can be adopted, the construction is inconvenient, and great limitation exists; the method is not suitable for being used in places such as existing bridges, ports and docks and frequent places of ships.
Disclosure of Invention
In order to overcome the defects in the background technology, the application discloses an ultrasonic transduction hydrophone applied to a water area single-channel seismic reflection wave method.
In order to achieve the aim of the application, the application adopts the following technical scheme:
an ultrasonic transduction hydrophone applied to a single-channel seismic reflection wave method in a water area comprises:
a plurality of ultrasonic transducers are coaxially arranged at intervals, and are connected in parallel;
one end of the high-frequency cable is connected with the ultrasonic transducer, and the other end of the high-frequency cable is correspondingly connected with the acquisition equipment;
wherein, the ultrasonic transducer includes:
an outer cylinder body with an upper end open;
the piezoelectric ceramics are stacked up and down and coaxially arranged in the inner cavity of the outer cylinder and are used for transmitting and receiving ultrasonic waves;
the damping block is arranged at the position of the inner cavity of the outer cylinder above the piezoelectric ceramic and is used for absorbing and shielding the interference above the piezoelectric ceramic so as to reduce noise;
the matching layer is arranged at the position of the inner cavity of the outer cylinder and positioned below the piezoelectric ceramic and is used for matching acoustic impedance so as to widen the working frequency band of the ultrasonic transducer;
the high-frequency cable is characterized in that an anode wire in the high-frequency cable is connected to the top surface of the uppermost piezoelectric ceramic, and the high-frequency cable is connected to the bottom surface of the lowermost piezoelectric ceramic.
Preferably, the bottom surface and the top surface of the piezoelectric ceramic are coated with silver layers.
Preferably, the method further comprises:
the shell is coated on all the ultrasonic transducers so as to be convenient for fixing the positions of all the ultrasonic transducers;
wherein, shell one end is equipped with the opening that high frequency cable conductor inserted, and this opening is equipped with sealed line ball subassembly.
Preferably, the sealing line pressing assembly includes:
the inner and outer thread sleeve is sleeved on the high-frequency cable wire body and axially screwed on the inner wall of the opening, and the lower section of the inner wall of the inner and outer thread sleeve is provided with a diameter reducing part;
the flexible sealing ring is sleeved on the high-frequency cable body and is arranged in the inner cavity of the internal and external thread sleeve;
the hollow screw plug is sleeved on the high-frequency cable wire body, and one end of the hollow screw plug is in threaded connection with the inner cavity of the inner and outer thread sleeve so as to extrude the flexible sealing ring.
Preferably, the end of the housing facing away from the opening is a tapered end.
Preferably, the distance between adjacent ultrasonic transducers is 0.3 to 0.7m.
Preferably, the number of the ultrasonic transducers is 2-4.
Preferably, the number of the piezoelectric ceramics in each ultrasonic transducer is 3 or 4.
Preferably, the piezoelectric ceramics are of inverted cone structure with an open upper end, so that all the piezoelectric ceramics are nested up and down, and adjacent piezoelectric ceramics are tightly attached.
Preferably, the high-frequency cable is correspondingly connected to the acquisition device through the amplifying circuit.
Due to the adoption of the technical scheme, the application has the following beneficial effects:
1. due to the arrangement of the damping block, ultrasonic waves above the piezoelectric ceramic can be absorbed, and the function of reducing noise is realized;
2. due to the arrangement of the matching layer, the matching acoustic impedance can be achieved between the ultrasonic transducer and the working load, so that the working frequency band of the ultrasonic transducer can be widened, and the ultrasonic resolution and working adaptability can be improved;
3. the arrangement of the silver layers coated on the upper surface and the lower surface of the piezoelectric ceramic ensures the uniformity of the voltage of the piezoelectric ceramic;
4. the method has the advantages that the signals of the ultrasonic transducers are combined into one signal by adopting a mode of combining the ultrasonic transducers, so that the real seismic signals are enhanced, the noise is suppressed, the signal quality is improved, and the range of receiving the seismic signals is increased;
5. the hydrophone is small in size and convenient to carry, can be well adapted to arrangement and operation of special occasions, and solves the technical problems of high import cost and difficult import small track distance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is an enlarged view of part I of FIG. 1;
FIG. 3 is an enlarged view of part II of FIG. 2;
fig. 4 is an enlarged view of part III in fig. 3.
In the figure: 1. an ultrasonic transducer; 11. an outer cylinder; 12. piezoelectric ceramics; 13. a damping block; 14. a matching layer; 2. a high-frequency cable; 3. a housing; 4. sealing the wire pressing assembly; 41. an inner and outer threaded sleeve; 42. a flexible sealing ring; 43. a hollow screw plug.
Detailed Description
The present application will be explained in detail by the following examples, and the purpose of the present application is to protect all technical improvements within the scope of the present application, and in the description of the present application, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., only correspond to the drawings of the present application, and in order to facilitate description of the present application, it is not necessary to indicate or imply that the apparatus or element referred to has a specific orientation.
An ultrasonic wave transduction hydrophone applied to a water area single-channel seismic reflection wave method comprises a plurality of ultrasonic wave transducers 1 and high-frequency cable wires 2, wherein the ultrasonic wave transducers 1 and the high-frequency cable wires 2 are coaxially arranged at intervals, and the high-frequency cable wires 2 are correspondingly connected with acquisition equipment when the ultrasonic wave transduction hydrophone is used;
further, the high-frequency cable 2 is correspondingly connected to the acquisition device through an amplifying circuit.
The number of the ultrasonic transducers 1 is 2 to 4 according to the requirement; the distance between adjacent ultrasonic transducers 1 is 0.3 to 0.7m.
In the present embodiment, as shown in fig. X, 3 ultrasonic transducers 1 are employed, and the distance between two adjacent ultrasonic transducers 1 is 0.5m; therefore, the length of the whole hydrophone except the high-frequency cable 2 is slightly larger than 1m, compared with 6m and above imported from the United states, the hydrophone realizes miniaturized design, is more convenient for construction, and can be well suitable for occasions of frequent bridges, ports and wharfs and ships.
In other embodiments, the number of the ultrasonic transducers 1 may be 2 or 4, and there may be a certain error in the distance between two adjacent ultrasonic transducers 1, that is, the distance between two adjacent ultrasonic transducers 1 may be between 0.3 and 0.7m.
In the actual production process, the length of the hydrophone is between 1.5 and 2 m.
Further, the ultrasonic transducer 1 with reference to fig. 2 comprises an outer cylinder 11, piezoelectric ceramics 12, a damping block 13 and a matching layer 14; specifically, the upper end of the outer cylinder 11 is open and is used for fixing and protecting the piezoelectric ceramic 12, the damping block 13 and the matching layer 14;
the outer cylinder 11 is made of plastic or metal as needed.
The piezoelectric ceramics 12 are stacked up and down and coaxially arranged in the inner cavity of the outer cylinder 11 for transmitting and receiving ultrasonic waves;
the number of the piezoelectric ceramics 12 is 3 or 4 as needed, and in the present embodiment, 3 piezoelectric ceramics 12 are used.
Further, in order to increase the uniformity of the voltage of the piezoelectric ceramic 12, the bottom surface and the top surface of the piezoelectric ceramic 12 are coated with silver layers as electrodes; specifically, the silver layer electrode on the top surface of the ceramic plate is connected with the positive electrode to the circuit, and the silver layer electrode below is connected with the negative electrode to form a differential signal loop.
Furthermore, the piezoelectric ceramics 12 have an inverted cone structure with an open upper end, so that all the piezoelectric ceramics 12 can be nested up and down, and the adjacent piezoelectric ceramics 12 can be closely attached.
The damping block 13 is arranged at a position above the piezoelectric ceramic 12 in the inner cavity of the outer cylinder 11 and is used for absorbing and shielding interference above the piezoelectric ceramic 12 so as to reduce noise; specifically, the damping block 13 is configured of a plurality of damping materials, and is adhered above the piezoelectric ceramic 12.
The matching layer 14 is arranged at a position below the piezoelectric ceramic 12 in the inner cavity of the outer cylinder 11 and is used for matching acoustic impedance so as to broaden the working frequency band of the ultrasonic transducer 1, further improve the ultrasonic resolution and working adaptability and further adjust the receivable frequency range; specifically, the frequency to which the piezoelectric ceramic 12 can respond is adjusted by the matching layer 14, and thus the operating frequency of the ultrasonic transducer 1 can be reduced.
The positive electrode wire of the high-frequency cable 2 is connected to the top surface of the uppermost piezoelectric ceramic 12, and the positive electrode wire of the high-frequency cable 2 is connected to the bottom surface of the lowermost piezoelectric ceramic 12.
The frequency bandwidth of the ultrasonic transducer 1 can reach 200 Hz-200000 Hz, the sensitivity of the received sound wave is less than 10 microvolts, the dynamic range is about 78dB, and the range of 0-133 dB can be detected.
The hydrophone combines the signals of a plurality of ultrasonic transducers 1 into one signal by adopting a mode of combining the ultrasonic transducers 1, thereby enhancing the real seismic signal, inhibiting noise, improving the signal quality and increasing the range of receiving the seismic signal.
During assembly, the matching layer 14 is firstly arranged at the bottom of the inner cavity of the outer cylinder 11, then 3 piezoelectric ceramics 12 connected with the high-frequency cable 2 are vertically stacked in the inner cavity of the outer cylinder 11, then the damping block 13 is pressed into the inner cavity of the outer cylinder 11, and finally the inner cylinder is encapsulated by glue solution.
Further, referring to fig. 1, in order to fix the position of the ultrasonic transducer 1, an ultrasonic transducer hydrophone applied to a single-channel seismic reflection wave method in a water area further comprises a housing 3 for fixing the position of the ultrasonic transducer 1, specifically, one end of the housing 3 is provided with an opening into which a high-frequency cable 2 is inserted, the opening is provided with a sealing wire pressing assembly 4, and the other end of the housing 3 is a conical end; a plurality of ultrasonic transducers 1 are coaxially arranged in the shell 3 at intervals;
the housing 3 is made of plastic as required.
According to the requirement, a limiting ring is arranged at the position between two adjacent ultrasonic transducers 1 in the inner cavity of the shell 3, so that the position of the ultrasonic transducer 1 is prevented from moving. In order to reduce the weight of the limiting ring, the annular wall of the limiting ring adopts a hollowed-out design;
further, referring to fig. 4, the sealing and pressing assembly 4 includes:
an inner and outer screw sleeve 41 which is sleeved on the wire body of the high-frequency cable wire 2 and is axially screwed on the inner wall of the opening, and the lower section of the inner wall of the inner and outer screw sleeve 41 is provided with a diameter reducing part;
the inner ends of the inner and outer threaded sleeves 41 abut against the corresponding ultrasonic transducers 1 as required.
The flexible sealing ring 42 is sleeved on the high-frequency cable 2 and is arranged in the inner cavity of the internal and external thread sleeve 41.
The hollow plug screw 43 is sleeved on the high-frequency cable 2 and one end is screwed into the inner cavity of the internal and external thread sleeve 41 so as to squeeze the flexible sealing ring 42.
In this way, the flexible sealing ring 42 can be extruded by matching the hollow screw plug 43 with the reduced diameter part of the internal and external thread sleeve 41, so that the flexible sealing ring 42 is deformed, and the sealing matching between the high-frequency cable 2 and the internal and external thread sleeve 41 is ensured.
The application has not been described in detail in the prior art, and it is apparent to those skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and range of equivalency are intended to be embraced therein.
Claims (10)
1. An ultrasonic wave transduction hydrophone applied to a water area single-channel seismic reflection wave method is characterized in that: comprising the following steps:
a plurality of ultrasonic transducers (1) are coaxially arranged at intervals, and the ultrasonic transducers (1) are connected in parallel;
one end of the high-frequency cable (2) is connected with the ultrasonic transducer (1), and the other end of the high-frequency cable is correspondingly connected with the acquisition equipment;
wherein the ultrasonic transducer (1) comprises:
an outer cylinder (11) with an upper end open;
the piezoelectric ceramics (12) are stacked up and down and coaxially arranged in the inner cavity of the outer cylinder body (11) and are used for transmitting and receiving ultrasonic waves;
the damping block (13) is arranged at a position above the piezoelectric ceramic (12) in the inner cavity of the outer cylinder (11) and is used for absorbing and shielding interference above the piezoelectric ceramic (12) so as to reduce noise;
the matching layer (14) is arranged at a position below the piezoelectric ceramic (12) in the inner cavity of the outer cylinder (11) and is used for matching acoustic impedance so as to widen the working frequency band of the ultrasonic transducer (1);
the positive electrode wire in the high-frequency cable (2) is connected to the top surface of the uppermost piezoelectric ceramic (12), and the high-frequency cable (2) is connected to the bottom surface of the lowermost piezoelectric ceramic (12).
2. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the bottom surface and the top surface of the piezoelectric ceramic (12) are coated with silver layers.
3. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: further comprises:
the shell (3) is coated on all the ultrasonic transducers (1) so as to fix the positions of all the ultrasonic transducers (1);
wherein, shell (3) one end is equipped with the opening that high frequency cable conductor (2) was inserted, and this opening is equipped with sealed line ball subassembly (4).
4. An ultrasonic transducer hydrophone for use in a single channel seismic echo method in water as defined in claim 3, wherein: the seal wire pressing assembly (4) comprises:
an inner and outer thread sleeve (41) which is sleeved on the wire body of the high-frequency cable wire (2) and is axially screwed on the inner wall of the opening, wherein the lower section of the inner wall of the inner and outer thread sleeve (41) is provided with a diameter-reducing part;
the flexible sealing ring (42) is sleeved on the high-frequency cable (2) body and is arranged in the inner cavity of the internal and external thread sleeve (41);
the hollow screw plug (43) is sleeved on the wire body of the high-frequency cable wire (2), and one end part of the hollow screw plug is screwed into the inner cavity of the internal and external thread sleeve (41) so as to extrude the flexible sealing ring (42).
5. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: one end of the shell (3) deviating from the opening is a conical end.
6. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the distance between adjacent ultrasonic transducers (1) is 0.3-0.7 m.
7. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the number of the ultrasonic transducers (1) is 2-4.
8. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the number of the piezoelectric ceramics (12) in each ultrasonic transducer (1) is 3 or 4.
9. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the piezoelectric ceramics (12) are of inverted cone structures with open upper ends, so that all the piezoelectric ceramics (12) are nested up and down, and adjacent piezoelectric ceramics (12) are tightly attached.
10. The ultrasonic transducer hydrophone applied to the single-channel seismic reflection wave method in water areas according to claim 1, wherein the transducer hydrophone comprises: the high-frequency cable (2) is correspondingly connected to the acquisition equipment through the amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311079868.0A CN117031534A (en) | 2023-08-24 | 2023-08-24 | Ultrasonic wave transduction hydrophone applied to water area single-channel seismic reflection wave method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311079868.0A CN117031534A (en) | 2023-08-24 | 2023-08-24 | Ultrasonic wave transduction hydrophone applied to water area single-channel seismic reflection wave method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117031534A true CN117031534A (en) | 2023-11-10 |
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ID=88622633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311079868.0A Pending CN117031534A (en) | 2023-08-24 | 2023-08-24 | Ultrasonic wave transduction hydrophone applied to water area single-channel seismic reflection wave method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117031534A (en) |
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2023
- 2023-08-24 CN CN202311079868.0A patent/CN117031534A/en active Pending
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