CN115790816A - Design method of large-dynamic-range measuring hydrophone - Google Patents
Design method of large-dynamic-range measuring hydrophone Download PDFInfo
- Publication number
- CN115790816A CN115790816A CN202211458723.7A CN202211458723A CN115790816A CN 115790816 A CN115790816 A CN 115790816A CN 202211458723 A CN202211458723 A CN 202211458723A CN 115790816 A CN115790816 A CN 115790816A
- Authority
- CN
- China
- Prior art keywords
- hydrophone
- preamplifier
- switching element
- circuit switching
- dynamic range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses a design method of a large-dynamic-range measuring hydrophone, which comprises a sensitive element and a preamplifier module, wherein the rear end of the sensitive element is connected with the preamplifier module, the preamplifier module comprises two output channels, one of the two output channels is a straight channel, the other channel comprises the preamplifier, the preamplifier module also comprises a circuit switching element, the circuit switching element controls two channels of switches, and the selection of the two output channels is realized by switching on and off the circuit switching element, so that the adjustment of the dynamic range of the hydrophone is realized. The invention gives consideration to the high measurement upper limit capability of the low-sensitivity hydrophone and the low measurement lower limit capability of the high-sensitivity hydrophone, so that the same hydrophone can have a larger dynamic range, and a simple and convenient method is provided for the underwater acoustic measurement test.
Description
The technical field is as follows:
the invention belongs to the technical field of hydrophone design, and particularly relates to a design method of a large-dynamic-range measurement hydrophone.
Background art:
the hydrophone is a transducer for receiving acoustic signals in water and converting the acoustic signals into electric signals, and is widely applied to the fields of underwater communication, detection, identification, marine environment monitoring and the like. In the aspect of underwater acoustic measurement and testing, a hydrophone is generally used as a standard hydrophone, and for weak target signals or marine environmental noise detection, a high-sensitivity-level hydrophone is generally adopted, such as an optical fiber hydrophone or a hydrophone with a pre-amplification gain, the pre-amplification gain is generally fixed gain, or a rear-end amplifier is used, but low-noise signal testing cannot be achieved, namely a certain signal-to-noise ratio is met. Conversely, for high level signal testing, a low sensitivity hydrophone is utilized. At present, performance tests of underwater noise of marine pile driving, underwater explosion sound sources, receiving and transmitting combined sonar equipment and the like are required to simultaneously cover high and low signal test requirements in one test, the test complexity is increased by using a plurality of hydrophones, and the test is greatly hindered by factors such as tide, wind wave and water flow during the marine test. Therefore, a measurement hydrophone with adjustable dynamic range and strong anti-interference capability is urgently needed to be designed so as to meet the test requirements.
The invention content is as follows:
the technical problem to be solved by the invention is to provide a design method of a large-dynamic-range measuring hydrophone, which combines the high measurement upper limit capability of a low-sensitivity hydrophone and the low measurement lower limit capability of the high-sensitivity hydrophone, so that the same hydrophone can have a larger dynamic range, and a simple and convenient method is provided for the measurement test of the underwater sound.
The technical proposal of the invention is to provide a design method of a large dynamic range measuring hydrophone, which comprises a sensitive element and a preamplifier module,
the rear end of the sensitive element is connected with the preamplifier module, the preamplifier module comprises two output paths, one path is a through path, the other path comprises a preamplifier, the preamplifier module further comprises a circuit switching element, the circuit switching element controls two paths of switches, and the two output paths are selected by switching on and off the circuit switching element, so that the dynamic range of the hydrophone is adjusted.
Preferably, the circuit switching element is provided in parallel with the preamplifier, and is supplied with power from the same external power source.
Preferably, the circuit switching element is a relay or an electronic switch, and the circuit switching element controls two sets of switches.
Preferably, the circuit switching element turns on the feedthrough output path when not energized, and turns on the output path with the preamplifier after energization. A through output path refers to a line formed by a single conductor, while an output path with a preamplifier refers to a line to which an amplifier is connected on a conductor.
Preferably, the hydrophone is powered by the external power supply to control the on-off of the preamplifier module.
Further, the preamplifier and the circuit switching element are separately provided on different circuit boards, or are integrated on the same circuit board. That is, the two devices may be separately disposed on different circuit boards, or may be combined into one circuit board.
Compared with the prior art, the invention has the following advantages after adopting the scheme:
aiming at the problem of metering test of large dynamic range signals, the invention provides a design method of a large dynamic range measurement hydrophone, which realizes the adjustment of the sensitivity of the hydrophone through the on-off control of an external power supply, fuses the high measurement upper limit capacity of a low-sensitivity hydrophone and the low measurement lower limit capacity of a high-sensitivity hydrophone, and can meet the metering test requirements of different magnitude of underwater acoustic signals. The method has the advantages of low cost and simple field implementation under the condition of ensuring the requirement of test precision. The hydrophone adopting the design is suitable for measurement work such as underwater explosive sound sources, ocean piling underwater noise and the like in laboratories or lakes and seas.
Description of the drawings:
FIG. 1 is a schematic diagram of a large dynamic range measurement hydrophone design according to the present invention.
The specific implementation mode is as follows:
the invention will be further described with respect to specific embodiments in conjunction with the following drawings:
as shown in fig. 1, in order to increase the dynamic range of a hydrophone and meet the requirements of measurement and test on different levels of underwater acoustic signals, a design method of a large dynamic range measurement hydrophone is provided, which comprises a sensitive element 1 and a preamplifier module, wherein,
the rear end of the sensitive element 1 is connected with a preamplifier module, the preamplifier module comprises two output paths, one path is a straight-through path, the other path comprises a preamplifier 3, the preamplifier module also comprises a circuit switching element 2, the circuit switching element 2 controls two paths of switches, and the two output paths are selected by switching on and off the circuit switching element, so that the dynamic range of the hydrophone is adjusted.
That is, the preamplifier module is provided with two output paths, one path is a direct wire, and the other path comprises a preamplifier. When the circuit switching element 2 is not electrified, the output end of the sensing element 1 is directly output after being connected with a lead which is directly communicated with the output path, and after the circuit switching element is electrified, the output end of the sensing element is contacted with the output path where the preamplifier 3 is located under the action of a switch to realize amplified output.
Furthermore, the selection of the output path of the hydrophone is controlled by the circuit switching element 2, the single circuit switching element 2 simultaneously controls two paths of switches, when the circuit switching element 2 is not electrified, the switches are in contact with two ends of the output path of the straight path, and after the circuit switching element is electrified, the switches are switched to be in contact with the output path of the preamplifier 3. In this embodiment, the circuit switching element is a relay.
Furthermore, the circuit switching element 2 and the amplifier module are powered by the same external power supply. The preamplifier 3 and the circuit switching element 2 are integrated on the same circuit board.
In addition, when the weak signal test is carried out, the hydrophone preamplifier is supplied with power, the electric signal generated by the sensitive element is amplified by the amplifier module and then output, when the strong signal test is carried out, the preamplifier is not supplied with power, and the electric signal generated by the sensitive element is directly output through the direct-connection output channel.
The hydrophone with the preamplifier is suitable for measuring underwater explosive sound sources, ocean piling underwater noise, high-magnitude signals and the like in a laboratory or lake sea environment.
The foregoing is illustrative of the preferred embodiments of the present invention only and is not to be construed as limiting the claims. All the equivalent structures or equivalent process changes made by the description of the invention are included in the scope of the patent protection of the invention.
Claims (6)
1. A design method of a large dynamic range measurement hydrophone is characterized in that: comprises a sensitive element and a preamplifier module,
the rear end of the sensitive element is connected with the preamplifier module, the preamplifier module comprises two output paths, one path is a through path, the other path comprises a preamplifier, the preamplifier module further comprises a circuit switching element, the circuit switching element controls two paths of switches, and the two output paths are selected by switching on and off the circuit switching element, so that the dynamic range of the hydrophone is adjusted.
2. The large dynamic range measurement hydrophone design method of claim 1, wherein: the circuit switching element is connected with the preamplifier in parallel and is powered by the same external power supply.
3. The large dynamic range measurement hydrophone design method of claim 1, wherein: the circuit switching element is a relay or an electronic switch, and the circuit switching element controls the two groups of switches.
4. The large dynamic range measurement hydrophone design method of claim 1, wherein: the circuit switching element switches on the through output path when not energized and switches on the output path with the preamplifier when energized.
5. The large dynamic range measurement hydrophone design method of claim 2, wherein: the hydrophone is powered by the external power supply to control the on-off of the preamplifier module.
6. The large dynamic range measurement hydrophone design method of claim 1, wherein: the preamplifier and the circuit switching element are separately provided on different circuit boards, or are integrated on the same circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458723.7A CN115790816A (en) | 2022-11-21 | 2022-11-21 | Design method of large-dynamic-range measuring hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458723.7A CN115790816A (en) | 2022-11-21 | 2022-11-21 | Design method of large-dynamic-range measuring hydrophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115790816A true CN115790816A (en) | 2023-03-14 |
Family
ID=85439501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211458723.7A Pending CN115790816A (en) | 2022-11-21 | 2022-11-21 | Design method of large-dynamic-range measuring hydrophone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115790816A (en) |
-
2022
- 2022-11-21 CN CN202211458723.7A patent/CN115790816A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1125431A (en) | Time varying gain amplifier for side scan sonar applications | |
| NO347140B1 (en) | Acoustic projector with source level monitoring and control | |
| US5530678A (en) | Real-time calibration acoustic array | |
| CN115790816A (en) | Design method of large-dynamic-range measuring hydrophone | |
| CN116953289A (en) | ADCP calibration system | |
| CN2254180Y (en) | Compound hydrophone | |
| KR0175771B1 (en) | Line array with submux part Manual dolls Underwater acoustic detector Sound sensor part | |
| CN111289985A (en) | Low-power-consumption underwater target detection system and detection method thereof | |
| KR0175762B1 (en) | Auxiliary Sensor Module for Prearranged Towing Underwater Sound Detector | |
| KR0156080B1 (en) | Sensor part of manual towed sonar system | |
| KR0180182B1 (en) | Manually towed sonar system with power apparatus integrating linear regulator and switching regulator | |
| CN110940968A (en) | Low-frequency low-noise piezoelectric vector sensor | |
| KR0156079B1 (en) | Sensor part of manual towed sonar system | |
| CN212872888U (en) | Communication beacon | |
| CN221631686U (en) | Miniaturized device broadband passive sonar | |
| Lee et al. | Miniature flextensional acoustic transducers for long range location tracking | |
| CN220773260U (en) | Multichannel acoustic emission acquisition system | |
| CN217879636U (en) | Ultrashort baseline positioning device based on multi-beam sounding instrument | |
| SU1316613A1 (en) | System for studying migration of fish under natural conditions | |
| RU25937U1 (en) | THE WAY OF DETERMINING AND CONTROL OF HYDROACOUSTIC AND ELECTRIC HINDER OPERATION OF HYDROACOUSTIC MEANS | |
| RU2042283C1 (en) | Process of calibration of sonar antenna under conditions of natural water basin | |
| KR970028604A (en) | Low Frequency Acoustic Module of Line Array Sound Detector | |
| RU31444U1 (en) | Device for graduating flexible hydroacoustic extended towed antennas (GPBA) (options) | |
| JP3388688B2 (en) | Acoustic positioning device | |
| KR0126909Y1 (en) | Receiving apparatus of detective signal from bearing sensor in sensor part of linear array acoustic wave detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |