CN217083794U - Program-controlled linear array acoustic array sensitivity testing system - Google Patents
Program-controlled linear array acoustic array sensitivity testing system Download PDFInfo
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- CN217083794U CN217083794U CN202220580751.5U CN202220580751U CN217083794U CN 217083794 U CN217083794 U CN 217083794U CN 202220580751 U CN202220580751 U CN 202220580751U CN 217083794 U CN217083794 U CN 217083794U
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Abstract
A program-controlled linear acoustic array sensitivity test system comprises: a digital signal source; the transmitting transducer is used for transmitting a test ultrasonic wave according to the test signal and comprises a transmitting surface; the hydrophone is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer; the device to be tested is used for receiving the test ultrasonic waves and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer; and the signal processing system is connected with the hydrophone and the device to be tested. The utility model discloses send digital test signal according to the instruction by digital signal source, the transmitting transducer can send the ultrasonic wave under water according to digital test signal, and the ultrasonic wave is received and is formed the signal of telecommunication by hydrophone and device to be tested and carry out test analysis by signal processing system. The utility model provides an among the prior art manual test exist consuming time power, rely on the tester scheduling problem seriously.
Description
Technical Field
The utility model belongs to the technical field of the transducer test, more specifically say, in particular to programme-controlled formula linear array sound array sensitivity test system.
Background
The transducer is a device for mutual conversion of electric energy and acoustic energy, and is used in instruments such as an echo sounder and a Doppler log. The conversion of electrical energy into acoustic energy is called a transmitting transducer and the conversion of acoustic energy into electrical energy is a receiving transducer.
In transducer production, the performance of the transducer needs to be detected, and the rapid and accurate completion of transducer performance testing is a basic guarantee for transducer production. The traditional manual testing method has the defects of low efficiency, serious dependence on testing personnel for testing level and the like. In addition, the manual test requires many test devices (including signal sources, power amplifiers, door systems, oscilloscopes, recorders, analyzers, preamplifiers, switches, etc. in general), and requires operators to know the operation and performance of each device, which puts a very high demand on the service capability of the testers. In the test operation, it is also necessary to manually perform sound field adjustment, received signal conditioning, and received signal reading and data processing (formula calculation, etc.), and the test threshold is high.
SUMMERY OF THE UTILITY MODEL
Problem (A)
In summary, because the conventional manual testing method has the problems of tedious test data processing, large workload, relatively large uncertainty and the like, how to provide a transducer testing method with simple operation becomes a problem to be solved by those skilled in the art.
(II) technical scheme
The utility model provides a programme-controlled formula linear array sound array sensitivity test system, this programme-controlled formula linear array sound array sensitivity test system includes:
a digital signal source for generating a test signal;
the transmitting transducer is arranged underwater and used for transmitting a test ultrasonic wave according to the test signal, and comprises a transmitting surface;
the hydrophone is arranged under water and used for monitoring the test ultrasonic wave, is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the underwater penetration depth of the transmitting transducer;
the device to be tested is arranged underwater and used for receiving the test ultrasonic wave, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer;
and the signal processing system is connected with the hydrophone and the device to be tested.
Preferably, in the utility model provides an among the program-controlled formula linear array sound array sensitivity test system, still including the noise elimination pond, the noise elimination pond loads and has water, be used for the transmitting transducer hydrophone and the device under test's dive test.
Preferably, in the program-controlled linear acoustic array sensitivity test system provided by the present invention, the distance between the hydrophone and the transmitting transducer is smaller than the distance between the device under test and the transmitting transducer.
Preferably, in the utility model provides an among the program-controlled formula linear array acoustic array sensitivity test system, with digital signal source is connected with power amplifier, with power amplifier is connected with the voltage current sampler, transmitting transducer with the voltage current sampler is connected.
Preferably, in the utility model provides an among the program-controlled linear array acoustic array sensitivity test system, signal processing system including with the hydrophone and the electronic switch that the device under test is connected, with preamplifier that electronic switch connects, with program controlled filter that preamplifier connects and with the oscilloscope that program controlled filter connects.
Preferably, in the program-controlled linear acoustic array sensitivity test system provided by the present invention, a power supply is connected to the preamplifier, and the power supply is a dc power supply.
Preferably, in the program-controlled linear acoustic array sensitivity test system provided by the present invention, the oscilloscope is a digital oscilloscope.
Preferably, in the program-controlled linear acoustic array sensitivity test system provided by the present invention, the hydrophone and the device under test are all located on the acoustic axis of the transmitting transducer.
(III) advantageous effects
The utility model provides a programme-controlled formula linear array sound array sensitivity test system the utility model discloses in, this programme-controlled formula linear array sound array sensitivity test system includes: a digital signal source for generating a test signal; the transmitting transducer is arranged underwater and used for transmitting a test ultrasonic wave according to a test signal, and comprises a transmitting surface; the hydrophone is arranged under water and used for monitoring and testing ultrasonic waves, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer; the device to be tested is arranged underwater and used for receiving test ultrasonic waves, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the underwater penetration depth of the transmitting transducer; and the signal processing system is connected with the hydrophone and the device to be tested.
Through the structure design, the utility model provides an among the programme-controlled formula line array sound array sensitivity test system, send digital test signal according to the instruction by digital signal source, the transmitting transducer can send the ultrasonic wave under water according to digital test signal, and the ultrasonic wave is received and is formed the signal of telecommunication by hydrophone and device to be tested and carry out test analysis by signal processing system. The utility model discloses a to the research of linear array sound array high frequency underwater sound parameter test technique, make the company master the underwater sound control parameter test technique, will practice thrift its expensive test expense of coordinating outward to improve company's underwater sound detection technology. The acoustic array test system has the advantages that the acoustic array production test capability of a company is comprehensively realized, and the advance level of the industry in the water weapon industry is reached. The competitive strength of the design, production and manufacture of the subsequent related products of the company is improved. The utility model relates to a line array sound array underwater acoustic test system for line array sound array sensitivity test. The utility model provides a programme-controlled test system has solved the consuming time power that manual test exists among the prior art, has seriously relied on tester scheduling problem.
Drawings
Fig. 1 is a schematic circuit and schematic structural diagram of a program-controlled linear acoustic array sensitivity testing system according to an embodiment of the present invention.
In fig. 1, the correspondence between the component names and the reference numerals is:
a digital signal source 1, a transmitting transducer 2, a transmitting surface 3, a hydrophone 4, a device to be tested 5,
A silencing water pool 6, a power amplifier 7, a voltage and current sampler 8, an electronic switch 9,
Preamplifier 10, programmable filter 11, oscilloscope 12, and acoustic axis 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
In addition, in the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description of the present invention and does not require that the present invention must be constructed and operated in a specific orientation, and thus, cannot be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Referring to fig. 1, fig. 1 is a schematic circuit and schematic structural diagram of a program-controlled linear acoustic array sensitivity testing system according to an embodiment of the present invention.
The utility model provides a programme-controlled formula (program control mode) linear array sound array sensitivity test system for realize the test of transducer.
The utility model discloses in, this programme-controlled formula linear array acoustic array sensitivity test system includes following component parts:
1. a digital signal source 1 for generating a test signal.
The utility model discloses in, digital signal source 1 is the circuit module that can generate specific digital test signal (the signal of telecommunication for test promptly) according to the instruction.
2. A power amplifier 7.
The power amplifier 7 is a circuit block capable of amplifying a signal (the above-mentioned digital test signal). The power amplifier 7 is connected to the digital signal source 1 and can amplify the digital test signal emitted from the digital signal source 1.
3. A voltage current sampler 8.
The voltage current sampler 8 is a conventional underwater sound voltage current sampler in the prior art, and the voltage current sampler 8 is connected with the power amplifier 7 and can convert the amplified digital test signal into a driving signal to be sent out.
4. The transmitting transducer 2.
The transmitting transducer 2 is a device capable of converting electric energy into acoustic energy, and the transmitting transducer 2 is disposed under water for transmitting a test ultrasonic wave according to a digital test signal. The transmitting transducer 2 comprises a transmitting face 3, and the ultrasonic waves are emitted by the transmitting face 3.
The transmitting transducer 2 comprises a sound axis 13, the sound axis 13 being a virtual straight line perpendicular to the transmitting surface 3 and passing through the centroid of the transmitting surface 3.
5. A hydrophone 4.
The hydrophone 4 is arranged under water and can monitor the test ultrasonic wave emitted by the transmitting transducer 2. The hydrophone 4 is arranged on the side of the transmitting surface 3 of the transmitting transducer 2 and is consistent with the water penetration depth of the transmitting transducer 2.
Further, a hydrophone 4 is arranged on the acoustic axis 13 of the transmitting transducer 2.
6. A device under test 5.
In the present invention, the device under test 5 is specifically a transducer, and the device under test 5 is a transducer capable of performing acoustic-electric conversion.
The device under test 5 is disposed underwater, and is configured to receive the test ultrasonic wave, and the transmitting transducer 2 converts the electric energy into the sound energy (ultrasonic wave) to be released in the water, and the sound energy (ultrasonic wave) is received by the device under test 5 and converted by the device under test 5 into the electric energy (which may also be referred to as an electric signal, and the electric signal may be received and processed by a signal processing system).
The device to be measured 5 is arranged on one side of the transmitting surface 3 of the transmitting transducer 2 and is consistent with the water penetration depth of the transmitting transducer 2. Further, the device under test 5 is arranged on the acoustic axis 13 of the transmitting transducer 2. Still further, the distance between the hydrophone 4 and the transmitting transducer 2 is smaller than the distance between the device under test 5 and the transmitting transducer 2.
7. A signal processing system.
And the signal processing system is connected with the hydrophone 4 and the device to be tested 5. The signal processing system is capable of processing signals (electrical signals) generated by the hydrophones 4 and the device under test 5.
Specifically, a power amplifier 7 is connected to the digital signal source 1, a voltage-current sampler 8 is connected to the power amplifier 7, and the transmitting transducer 2 is connected to the voltage-current sampler 8. The signal processing system comprises an electronic switch 9 connected with the hydrophone 4 and the device under test 5, a preamplifier 10 connected with the electronic switch 9, a program control filter 11 connected with the preamplifier 10 and an oscilloscope 12 connected with the program control filter 11.
A power supply, which is a dc power supply, is connected to the preamplifier 10.
Specifically, the oscilloscope 12 is a digital oscilloscope.
8. And a silencing water tank 6.
The anechoic water tank 6 is loaded with water for underwater testing of the transmitting transducer 2, the hydrophone 4 and the device under test 5.
It should be noted that: constitute the utility model discloses a plurality of subassemblies (or module) are prior art's conventional equipment, for example digital signal source 1, power amplifier 7, current-voltage sampler, transmitting transducer 2, hydrophone 4, preamplifier 10, electronic switch 9, oscilloscope 12 etc. all are conventional equipment, the utility model discloses do not improve its structure, only use, the structure of above-mentioned component part, use, connected mode etc. all can refer to prior art, the utility model discloses do not explain in addition.
The utility model provides a programme-controlled formula linear array sound array sensitivity test system, this programme-controlled formula linear array sound array sensitivity test system need carry out following setting before the use:
1. the pulse width (pulse period) of the pulse signal (digital test signal) is set to meet the waveform requiring the minimum number of cycles for transmission.
In consideration of the transient response of the transducer, the pulse signal transmission generally requires 8-15 cycles (frequency) of waveform.
2. On the receiving side, the port and channel address of each instrument are reasonably set, the pass frequency band of the filter is reasonably set, and whether the test error caused by energy attenuation is within an acceptable range or not, the sampling multiple and waveform precision of the oscilloscope 12, the waveform analysis length and the like are considered for setting the frequency band of the filter, so that the acquired data meet the measurement requirements.
The utility model discloses programme-controlled formula linear array sound array sensitivity test system's technological process and parameter control as follows:
1. sound center determination and sound field arrangement.
The linear acoustic array (transmitting transducer) is a regular cylinder with the geometric acoustic center being the effective acoustic center. The water is placed in a professional container (a silencing water tank 6) and soaked in the water for half an hour to balance the temperature of the transducer with the water temperature. After being cleaned, the acoustic array to be measured (the device to be measured 5) is fixed on a clamp of a rotating device (equipment for installing the device to be measured), so that the acoustic centers of the transmitting transducer 2, the acoustic array to be measured (the device to be measured 5) and the standard hydrophone 4 are positioned on the same straight line (an acoustic axis 13) at the same depth, namely, the device to be measured 5 and the standard hydrophone 4 are placed on the acoustic axis 13 of the transmitting transducer 2. And the receiving surface of the device to be tested 5 is over against the transmitting surface of the transmitting transducer, and the distance meets the far field condition.
2. And (5) connecting the systems.
And respectively connecting each array element of the acoustic array (comprising a transmitting transducer and a device to be tested) with related equipment, and connecting a direct current voltage stabilizing source into the preamplifier 10 for supplying power. And (3) confirming that the connection of the whole system is correct, and sequentially opening a signal generator (a digital signal source 1), a voltage and current sampler 8, an oscilloscope 12, an electronic switch 9, a power amplifier 7 and a preamplifier 10.
And selecting a UTC23200 power amplifier 7, testing a frequency band of 3 k-70 KHz, and debugging the testing frequency band to a proper gear so as to avoid overload.
3. And (5) controlling parameters.
Regarding the parameter control of the transmitting transducer 2, an arbitrary point input frequency mode is adopted, reasonable signal source transmitting amplitude is set, the transient response of the transducer is considered, the pulse width is set, and the transmitting generally needs 8-15 periods of waveforms.
For parameter control of the device under test 5, ports and channel addresses of each instrument are set appropriately, a filter pass band is set appropriately, and whether a test error due to energy attenuation is within an acceptable range is considered for setting the filter band. The general filtering mode is 1/1OCT, which can reduce the time for receiving signal to reach steady state response, and is beneficial to separating the reflection of pool wall and water surface. The sampling multiple and waveform accuracy, waveform analysis length, etc. of the oscilloscope 12 are set so that the acquired data meet the measurement requirements.
4. And (5) testing sound pressure sensitivity.
And opening the voltage-stabilizing source and the measuring instrument and preheating. The open circuit voltage waveform of the hydrophone 4 is observed in the observation mode to check if the parameters are properly set, such as electrical interference, non-linear distortion, etc., and should be excluded.
Measuring, sequentially changing the transmitting frequencies of the transmitter to be 8K, 10K and 12.5K, and recording the signal amplitudes of the acoustic array to be measured and the standard hydrophone 4 of the oscilloscope 12 at each frequency point of each array element (8K, 10K, 12.5K and the like); and (5) processing the data to calculate a sound pressure sensitivity value.
The linear array acoustic array program control test is realized by researching and searching a set of scientific and reasonable process method, carrying out optimization control on the system from the aspects of testing the environmental parameters, the transmitting parameters and the receiving parameters of the system and making the control parameters clear in test software. The uncertainty of the system test (the uncertainty of the sound pressure sensitivity of the high-frequency test is U: 0.67dB) is improved, and the quality and the reliability of the underwater acoustic parameter measurement are ensured. And the detection method is popularized to the same products, thereby providing powerful guarantee for company development and production.
The utility model discloses an innovation point lies in: and (4) building and optimizing the test system to realize the linear array acoustic array program control test. And optimizing each parameter in the testing process to realize the controllability of the testing process.
The utility model provides a programme-controlled test method has solved the consuming time and wasting force, the serious tester scheduling problem that relies on that manual test exists among the prior art. Specifically, the utility model discloses a pulse sinusoidal signal is as the signal source, enlargies the excitation transmitter through the amplifier, forms the free sound field. The standard hydrophone 4 and the device to be tested 5 receive the pulse acoustic signal of the emitter, the pulse acoustic signal is sent to the preamplifier through two ports of the electronic switch, the amplifier selects a measuring range to amplify the received signal according to the amplitude of the signal, the amplified signal is filtered for two times continuously through the program control filter, and the amplified signal is sent to the digital oscilloscope to read out open-circuit voltage. Then the free field voltage sensitivity and the sensitivity level are automatically calculated by a computer, and a sensitivity frequency response curve is drawn.
The utility model provides a programme-controlled formula linear array sound array sensitivity test system the utility model discloses in, this programme-controlled formula linear array sound array sensitivity test system includes: a digital signal source for generating a test signal; the transmitting transducer is arranged underwater and used for transmitting a test ultrasonic wave according to a test signal, and comprises a transmitting surface; the hydrophone is arranged under water and used for monitoring and testing ultrasonic waves, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer; the device to be tested is arranged underwater and used for receiving the test ultrasonic waves, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer; and the signal processing system is connected with the hydrophone and the device to be tested.
Through the structure design, the utility model provides an among the programme-controlled formula line array sound array sensitivity test system, send digital test signal according to the instruction by digital signal source, the transmitting transducer can send the ultrasonic wave under water according to digital test signal, and the ultrasonic wave is received and is formed the signal of telecommunication by hydrophone and device to be tested and carry out test analysis by signal processing system. The utility model discloses a to the research of linear array sound array high frequency underwater sound parameter test technique, make the company master the underwater sound control parameter test technique, will practice thrift its expensive test expense of coordinating outward to improve company's underwater sound detection technology. The acoustic array test system has the advantages that the acoustic array production test capability of a company is comprehensively realized, and the advance level of the industry in the water weapon industry is reached. The competitive strength of the design, production and manufacture of the subsequent related products of the company is improved. The utility model relates to a line array sound array underwater acoustic test system for line array sound array sensitivity test. The utility model provides a programme-controlled test system has solved the consuming time power that manual test exists among the prior art, has seriously relied on tester scheduling problem.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (8)
1. A program-controlled linear acoustic array sensitivity test system is characterized by comprising:
a digital signal source (1) for generating a test signal;
the transmitting transducer (2) is arranged under water and used for transmitting a test ultrasonic wave according to the test signal, and comprises a transmitting surface (3);
the hydrophone (4) is arranged under water and used for monitoring the test ultrasonic waves, is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer;
the device to be tested (5) is arranged underwater and used for receiving the test ultrasonic waves, and is arranged on one side of the transmitting surface of the transmitting transducer and is consistent with the water inlet depth of the transmitting transducer;
and the signal processing system is connected with the hydrophone and the device to be tested.
2. The programmable linear acoustic array sensitivity test system of claim 1,
the underwater sound absorption type underwater sound transducer further comprises a sound absorption water pool (6), wherein water is loaded in the sound absorption water pool and is used for submergence testing of the transmitting transducer, the hydrophone and the device to be tested.
3. The programmable linear acoustic array sensitivity test system of claim 1,
the distance between the hydrophone and the transmitting transducer is smaller than the distance between the device to be tested and the transmitting transducer.
4. The programmable linear acoustic array sensitivity test system of claim 1,
and the digital signal source is connected with a power amplifier (7), the power amplifier is connected with a voltage current sampler (8), and the transmitting transducer is connected with the voltage current sampler.
5. The programmable linear acoustic array sensitivity test system of claim 1,
the signal processing system comprises an electronic switch (9) connected with the hydrophone and the device to be tested, a preamplifier (10) connected with the electronic switch, a program-controlled filter (11) connected with the preamplifier and an oscilloscope (12) connected with the program-controlled filter.
6. The programmable linear acoustic array sensitivity test system of claim 5,
and the power supply is connected with the preamplifier and is a direct current power supply.
7. The programmable linear acoustic array sensitivity test system of claim 5,
the oscilloscope is a digital oscilloscope.
8. The programmable linear acoustic array sensitivity test system according to any one of claims 1 to 7,
the hydrophone and the device to be tested are both positioned on the sound axis (13) of the transmitting transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220580751.5U CN217083794U (en) | 2022-03-16 | 2022-03-16 | Program-controlled linear array acoustic array sensitivity testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220580751.5U CN217083794U (en) | 2022-03-16 | 2022-03-16 | Program-controlled linear array acoustic array sensitivity testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217083794U true CN217083794U (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220580751.5U Active CN217083794U (en) | 2022-03-16 | 2022-03-16 | Program-controlled linear array acoustic array sensitivity testing system |
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| Country | Link |
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| CN (1) | CN217083794U (en) |
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2022
- 2022-03-16 CN CN202220580751.5U patent/CN217083794U/en active Active
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