CN115824384A - Hydrophone parameter measuring device - Google Patents
Hydrophone parameter measuring device Download PDFInfo
- Publication number
- CN115824384A CN115824384A CN202111097488.0A CN202111097488A CN115824384A CN 115824384 A CN115824384 A CN 115824384A CN 202111097488 A CN202111097488 A CN 202111097488A CN 115824384 A CN115824384 A CN 115824384A
- Authority
- CN
- China
- Prior art keywords
- hydrophone
- signal
- signal processing
- module
- digital display
- 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
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a hydrophone parameter measuring device, which solves the technical problems that the existing hydrophone can accurately measure and calibrate all parameters of the hydrophone in a water environment under a laboratory environment, is not suitable for an unpackaged semi-finished product production link and is not suitable for a field batch use link without a test condition, and comprises a measuring box, a signal test line, a sound field cabin body, a signal generating module, a signal processing module and a digital display module, wherein the measuring box comprises a box cover, a box shell and a base; the signal generating module and the signal processing module are respectively connected with the interior of the box shell, and the digital display module is connected with the box cover; the output end of the signal generation module is electrically connected with the low-frequency loudspeaker, the signal output end of the standard hydrophone is electrically connected with the signal processing module, and the digital display module is electrically connected with the signal processing module.
Description
Technical Field
The invention relates to the technical field of hydrophones, in particular to a hydrophone parameter measuring device.
Background
The hydrophone, as a product capable of converting a water pressure signal into an electric signal, has been widely applied to industrial production, and is particularly applied and popularized in the exploration and application of ocean oil and gas resources. Since the hydrophones are always used in batches during application, the consistency and stability of parameters among individuals are very important, and therefore hydrophone manufacturers or purchasing units need to measure part of key parameters of the hydrophones to determine whether the accuracy and consistency of the parameters meet requirements.
At present, the hydrophone can be accurately measured and calibrated in the water environment in a laboratory environment, but the measuring method is not suitable for the production link of unpackaged semi-finished products and the field batch use link without testing conditions.
Disclosure of Invention
The invention aims to solve the technical problems that the accurate measurement and calibration of the whole parameters of the existing hydrophone in the water environment in the laboratory environment are not suitable for the production link of unpackaged semi-finished products and the field batch use link without test conditions, and provides a hydrophone parameter measuring device which can still realize the rapid measurement of the key parameters of the hydrophone in the non-water environment without the support of other auxiliary equipment.
The invention provides a hydrophone parameter measuring device, which comprises a measuring box, a signal testing line, a sound field cabin, a signal generating module, a signal processing module and a digital display module, wherein the signal testing line is arranged on the measuring box;
the measuring box comprises a box cover, a box shell and a base, the base comprises a cylindrical part and a top part which are connected together, the top part is provided with a plurality of sound transmission holes, and the standard hydrophone is fixedly connected with the inner side of the top part 5 of the base;
the cylindrical part of the base is fixedly connected with the box cover;
the low-frequency loudspeaker is connected with the inner side of the box cover and emits sound towards the base; the standard hydrophone is positioned above the low-frequency loudspeaker;
the sound field cabin body is cylindrical, and the inner wall of the sound field cabin body is connected with a layer of sound-absorbing cotton; the lower end opening of the sound field cabin body is sleeved on the cylindrical part of the base;
the signal generation module and the signal processing module are respectively connected with the interior of the box shell, and the digital display module is connected with the box cover;
the output end of the signal generation module is electrically connected with the low-frequency loudspeaker, the signal output end of the standard hydrophone is electrically connected with the signal processing module, and the digital display module is electrically connected with the signal processing module.
Preferably, the length of the sound field cabin is 400-600 mm.
Preferably, the thickness of the sound-absorbing cotton is 5 mm.
The invention has the beneficial effects that: no matter in indoor or spacious field, all do not receive the influence of environment, provide a stable definite frequency sound field through low frequency loudspeaker and acoustic field cabin body and encourage by survey hydrophone output signal of telecommunication, do not need to have the water to measure strictly. The sound field environment is not only very suitable for construction units in field environment, but also very suitable for production units in the assembly links of raw materials and semi-finished products, so that the risk of soaking of the assembly parts in the semi-finished product state is avoided. Besides the signal test wire and the sound field cabin, other parts are convenient to carry, transport and use in the rectangular measurement main body, and the device is very suitable for rapid parameter measurement under temporary or batch conditions.
The rapid measuring device can measure the sensitivity parameters of the hydrophone, can also measure the resistance value without the assistance of other instruments, and can complete the measurement of two parameters at one station, thereby reducing the number of measuring personnel and reducing the labor intensity. On one hand, the power supply of the digital display resistance meter is selected, meanwhile, the lead wire of the hydrophone to be measured is selected to be communicated with the digital display resistance meter, and at the moment, the resistance value of the hydrophone to be measured is measured by the rapid measuring device and displayed on the digital display resistance meter; on the other hand, the logarithmic display voltmeter, the signal generating circuit board and the signal processing circuit board are selected to supply power, meanwhile, a lead of the hydrophone to be detected is selected to be communicated with the signal processing circuit board, at the moment, the signal generating circuit board excites the low-frequency loudspeaker to sound, the signal processing circuit board calculates the ratio of the standard hydrophone to the hydrophone to be detected and outputs a voltage value to the digital display voltmeter, the digital display voltmeter displays the sensitivity value of the hydrophone to be detected, the double-color LED lamp can distinguish the positive polarity and the negative polarity of the hydrophone to be detected through green light emitting or red light emitting, and meanwhile, the displayed sensitivity value can be conveniently adjusted through adjusting the gain adjusting knob.
Through setting relevant parameters of the signal generating circuit board, the low-frequency loudspeaker can be excited to emit continuous sound of 150-200 Hz, the length of the sound wavelength is about 43-58 cm, the length of the sound field cabin body attached with the sound absorption cotton is about 400-600 mm, which is just 1/4 of the sound wavelength, when the hydrophone to be measured is placed at the bottom of the sound field cabin body, the sound field energy is strongest, and the measured sensitivity value is accurate and stable.
Drawings
FIG. 1 is a schematic diagram of a hydrophone parameter measurement device;
FIG. 2 is a schematic diagram of a hydrophone parameter measurement device;
FIG. 3 is an external view of a hydrophone parameter measurement device;
FIG. 4 is a schematic view of the internal electrical connections of the measurement body;
fig. 5 is a schematic structural view of the base and the ceramic plate.
The symbols in the drawings illustrate that:
1. the device comprises a signal test wire, 2 a signal input socket, 3 a power supply charging socket, 4 a sound field cabin, 5 a base, 6 a cast aluminum box cover, 7 a cast aluminum box cover, 8 a toggle switch, 9 a rotary switch, 10 a digital display resistance meter, 11 a digital display voltmeter, 12 a two-color LED lamp, 13 a gain adjusting knob, 14 a hydrophone to be tested, 15 a limiting block, 16 a standard hydrophone, 17 a battery pack, 18 a signal generation circuit board, 19 a signal processing circuit board and 20 a low-frequency loudspeaker.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments thereof with reference to the attached drawings.
As shown in fig. 1, the rapid parameter measurement device mainly comprises a standard hydrophone, a low-frequency loudspeaker, a signal generation module, a signal processing module, a digital display module and a sound field cabin, wherein the output end of the signal generation module is connected with the low-frequency loudspeaker, the signal output end of the standard hydrophone is connected with the signal processing module, and the digital display module is connected with the signal processing module.
As shown in fig. 2 and 3, the fast parameter measuring apparatus mainly includes a measuring box, a signal testing line 1, and a sound field cabin 4.
The measuring box mainly comprises a cast aluminum box cover 6, a cast aluminum box shell 7, a base 5, a toggle switch 8, a rotary switch 9, a digital display resistance meter 10, a digital display voltmeter 11, a two-color LED lamp 12 and a gain adjusting knob 13, wherein the base 5, the toggle switch 8, the rotary switch 9, the digital display resistance meter 10, the digital display voltmeter 11, the two-color LED lamp 12 and the gain adjusting knob 13 are respectively installed on the upper surface of the cast aluminum box cover 6. The low frequency horn 20 is connected to the inside of the cast aluminum case cover 6, and the low frequency horn 20 emits sound toward the base 5. The cast aluminum box cover 6 is connected with the cast aluminum box shell 7. The material of the cast aluminum case cover 6 and the cast aluminum case cover 7 is not limited to aluminum.
The base 5 comprises a cylindrical part 5-1 and a top part 5-2, the top part 5-2 is connected with the cylindrical part 5-1, the top part 5-2 is provided with a plurality of sound-transmitting holes 5-2-1, as shown in fig. 5, four limit blocks 15 are fixedly connected with the inner side of the top part 5-2, a standard hydrophone 16 is clamped among the four limit blocks 15 to realize the fixation and positioning of the standard hydrophone 16, and the standard hydrophone 16 is positioned in an inner cavity of the cylindrical part 5-1. It should be noted that, a structure of four limit blocks may not be adopted, and the standard hydrophone 16 may also be fixedly mounted on the inner side of the top portion 5-2 by other means, such as bonding with glue.
The cylindrical part 5-1 is fixedly connected with a cast aluminum box cover 6.
A standard hydrophone 16 is located above the low frequency horn 20.
The cast aluminum box shell 7 is internally and fixedly provided with a battery pack 17, a signal generating circuit board 18 and a signal processing circuit board 19. A power charging socket 3 and two signal input sockets 2 are arranged on the side surface of the cast aluminum box shell 7.
The sound field enclosure 4 is cylindrical, a layer of sound absorption cotton (the thickness of the sound absorption cotton is preferably five millimeters) is adhered to the inner wall of the sound field enclosure 4, and the lower end opening of the sound field enclosure 4 is sleeved on the cylindrical part 5-1 of the base 5. The length of the sound field chamber 4 is preferably 400 to 600mm.
As can be seen from fig. 4, the power charging socket 3 is connected to the battery pack 17, and can supply power to the battery pack 17. The output positive pole of the battery pack 17 is connected with one input A of the rotary switch 9 through the toggle switch 8, and the output negative pole of the battery pack 17 is directly connected with the power supply negative pole terminal of the digital display ohmmeter 10, the power supply negative pole terminal of the digital display voltmeter 11, the power supply negative pole terminal of the signal generating circuit board 18 and the power supply negative pole terminal of the signal processing circuit board 19.
The rotary switch 9 is a two-way gate switch. The output C, E of the rotary switch 9 is connected with the positive terminal of the power supply and the positive terminal of the signal of the digital display ohmmeter 10 respectively; the output D of the rotary switch 9 is connected to the positive power terminal of the digital display voltmeter 11, the positive power terminal of the signal generating circuit board 18, and the positive signal terminal of the signal processing circuit board 19, respectively. The output F of the rotary switch is connected to the signal negative terminal of the signal processing circuit board 19.
The output leads of the signal generating circuit board 18 are connected to the power input terminals of the low frequency speaker 20, respectively. The signal output terminal of the standard hydrophone 16 is connected with the signal input terminal of the signal processing circuit board 19.
The positive pole of the signal input socket 2 is connected with the other input B of the rotary switch 9, and the negative pole of the signal input socket 2 is respectively connected with the signal negative pole terminal of the digital display ohmmeter 10 and the signal negative pole terminal of the signal processing circuit board 19.
The gain adjustment knob 13 is connected to a gain adjustment circuit of the signal processing circuit board 19.
When parameter testing is needed, the positive and negative lead wires of the hydrophone 14 to be tested are respectively connected with the positive and negative clamps of the signal testing line 1, and the plug wire at the other end of the signal testing line 1 is connected with the positive and negative electrodes of the signal input socket 2 on the side surface of the cast aluminum box shell 7.
The hydrophone 14 to be tested is placed in the sound field chamber 4.
The rotating switch 9 is twisted leftwards to enable the current device to be in a resistance measuring mode, a lead wire of the hydrophone 14 to be measured is connected with a signal input end of the digital display ohmmeter 10 through the signal testing line 1 and contacts B and E of the rotating switch 9, meanwhile, the battery pack 17 is connected with a power supply input end of the digital display ohmmeter 10 through the toggle switch 8 and contacts A and C of the rotating switch 9, and the digital display ohmmeter 10 displays the actual internal resistance value of the current hydrophone 14 to be measured.
The rotary switch 9 is twisted to the right to enable the current device to be in a measurement sensitivity mode, lead wires of a hydrophone 14 to be measured are connected with a signal input end of a signal processing circuit board 19 through a signal test wire 1 and contacts B and F of the rotary switch 9, meanwhile, a battery pack 17 is connected with a digital display voltmeter 11, a signal generation circuit board 18 and a power supply input end of the signal processing circuit board 19 through contacts A and D of the toggle switch 8 and the rotary switch 9, and meanwhile, a standard hydrophone 16 is also connected with the other input end of the signal processing circuit board 19 through the lead wires. The signal generating circuit board 18 continuously performs fixed-frequency excitation on the low-frequency loudspeaker 20 and enables the low-frequency loudspeaker 20 to make a sound, the standard hydrophone 16 and the hydrophone 14 to be measured respectively input signals to the signal processing circuit board 19 for corresponding processing such as amplification, filtering, addition, AD conversion and the like, the signal processing circuit board 19 outputs comparison results of the standard hydrophone 16 and the hydrophone 14 to be measured to the digital display voltmeter 11 in a direct-current voltage quantity mode, and the digital display ohmmeter 10 can be adjusted to display a calibration sensitivity value of the hydrophone 14 to be measured by adjusting the gain adjusting knob 13.
The two-color LED lamp 12 is electrically connected with the signal processing circuit board 19, when the polarity of the hydrophone 14 to be tested is the same as that of the standard hydrophone 16, the waveform phase of the signal received by the signal processing circuit board 19 is consistent, the hydrophone 14 to be tested can be considered to be positive, the two-color LED lamp 12 on the cast aluminum box cover 6 displays green light, and when the waveform phase of the signal received by the signal processing circuit board 19 is inconsistent under the condition that the wiring mode is not changed, the hydrophone 14 to be tested can be considered to be negative, and the two-color LED lamp 12 on the cast aluminum box cover 6 displays red light. (determination of the polarity of interest, in accordance with the International SEG polarity Standard)
The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the present invention, as it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention.
Claims (3)
1. A hydrophone parameter measuring device is characterized by comprising a measuring box, a signal testing line, a sound field cabin, a signal generating module, a signal processing module and a digital display module;
the measuring box comprises a box cover, a box shell and a base, the base comprises a cylindrical part and a top part which are connected together, the top part is provided with a plurality of sound transmission holes, and the standard hydrophone is fixedly connected with the inner side of the top part 5 of the base;
the cylindrical part of the base is fixedly connected with the box cover;
the low-frequency loudspeaker is connected with the inner side of the box cover and emits sound towards the base; the standard hydrophone is positioned above the low-frequency loudspeaker;
the sound field cabin body is cylindrical, and the inner wall of the sound field cabin body is connected with a layer of sound absorption cotton; the lower end opening of the sound field cabin body is sleeved on the cylindrical part of the base;
the signal generating module and the signal processing module are respectively connected with the interior of the box shell, and the digital display module is connected with the box cover;
the output end of the signal generation module is electrically connected with the low-frequency loudspeaker, the signal output end of the standard hydrophone is electrically connected with the signal processing module, and the digital display module is electrically connected with the signal processing module.
2. The hydrophone parameter measurement device of claim 1, wherein the length of the acoustic field chamber is 400-600 mm.
3. The hydrophone parameter measurement device of claim 1, wherein the acoustic wool has a thickness of 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097488.0A CN115824384A (en) | 2021-09-18 | 2021-09-18 | Hydrophone parameter measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111097488.0A CN115824384A (en) | 2021-09-18 | 2021-09-18 | Hydrophone parameter measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115824384A true CN115824384A (en) | 2023-03-21 |
Family
ID=85515359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111097488.0A Pending CN115824384A (en) | 2021-09-18 | 2021-09-18 | Hydrophone parameter measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115824384A (en) |
-
2021
- 2021-09-18 CN CN202111097488.0A patent/CN115824384A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6481288B1 (en) | Measuring the speed of sound of a gas | |
| US3912880A (en) | Acoustic measurement | |
| CN216116350U (en) | Hydrophone parameter measuring device | |
| RU2008151161A (en) | DEVICE FOR NON-DESTRUCTIVE CONTROL OF THE DESIGN USING VIBRATION ANALYSIS | |
| CN115824384A (en) | Hydrophone parameter measuring device | |
| CN107907810B (en) | Parallel plate electrode electromagnetic field irradiation discharge system with adjustable vacuum degree | |
| KR20100036567A (en) | Apparatus for detecting partial discharging signal and method for driving the same | |
| CN208969228U (en) | A kind of Magnetic Sensor static and dynamic performance caliberating device charging straight wire surrounding magnetic field | |
| CN202748343U (en) | Wireless network-based multifunctional integrated nondestructive testing sensor | |
| CN1202406C (en) | Portable wave detector low frequency receiving voltage sensitivity performance measurer | |
| RU193419U1 (en) | DEVICE FOR MEASURING ELECTRICAL PARAMETERS OF SOIL, TAKING INTO ACCOUNT THEIR FREQUENCY DEPENDENCE | |
| CN211014482U (en) | Polyimide electrothermal aging multi-path synchronous testing device under high-frequency high-voltage pulse | |
| CN207456601U (en) | Sound impedance test instrument | |
| CN207937801U (en) | A kind of experiment detection device of acceleration transducer | |
| RU2003133914A (en) | SENSOR AND METHOD FOR PRESSURE MEASUREMENT | |
| CN105866603B (en) | A kind of method and device measuring electric arc thermal energy using cross electromagnetic wave small room | |
| CN212482677U (en) | Device for detecting natural frequency of object by adopting laser excitation | |
| CN208477119U (en) | A kind of Multifunction wall bulk detector | |
| Ozaki et al. | Simulation of ultrasonic wave propagation of partial discharge in transformer model | |
| CN216133129U (en) | Multifunctional digital display test pencil circuit and device thereof | |
| CN107677359A (en) | Sound impedance test instrument harmony impedance detecting method | |
| CN213041984U (en) | Portable direct current synthetic electric field measuring instrument calibrating device | |
| SU1078673A1 (en) | Process for calibrating hydrophones | |
| CN110716084B (en) | Power test load device and method for testing output power of short wave therapeutic apparatus | |
| CN219957764U (en) | Transformer partial discharge simulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |