Measurement system and method of marine physical acoustics parameters

Abstract

The application relates to the technical field of data acquisition, in particular to a measurement system and a measurement method of marine physical acoustics parameters. The measurement system comprises an upper computer module, a sensor module, an interface module, a waveform transceiving module and a communication control module. Compared with the prior art, the measurement system can realize double excitation of sinusoidal and pulse wave signals, can simultaneously measure various marine acoustics parameters based on control instructions, can synchronously monitor marine environmental physical parameters such as the salinity and temperature of seawater, the pressure and temperature of seabed sediments and acoustics parameters such as the sound velocity and sound attenuation, and can correct the results, meanwhile, the measurement system supports external power amplification and linear sweep of the emitted signal, the multifunctionality and practicability of the marine physical acoustics parameter measurement system are improved, the seamless switching operation of multiple frequency bands and multiple sensors is realized, portability is realized, and the function integration of in-situ measurement and laboratory measurement is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data acquisition, in particular to a measurement system and method of marine physical acoustics parameters. BACKGROUND

[0002] At present, the demand for resources of the rapidly developing human society is increasing, but the available land resources cannot meet the development needs. The earth's sea area is huge, and it contains rich resources of animals, plants and minerals, etc. Therefore, each country pays great attention to the exploration and development of marine resources.

[0003] Seafloor sediments, as an important part of the ocean, are an important object of ocean exploration engineering, and have important significance for seafloor mapping, resource exploration and marine defense. Under the long-term geological movement, ocean current transport and microbial decomposition, land rivers, animal and plant remains, sediments and other materials are continuously deposited, forming a loose pore framework structure. The pore framework structure is a typical incomplete elastic porous medium filled with seawater and a small amount of air. Due to the complex acoustic characteristics of seafloor sediments, the physical and acoustic characteristics have a large change gradient within several meters in depth from the surface to the shallow layer of the sediments. The sound speed, sound attenuation coefficient and spatial acoustics distribution of seafloor sediments are crucial for marine sound field positioning, sound field numerical prediction and underwater vehicle including submarine silent navigation. The acoustic characteristics of seafloor sediments also have an impact on the propagation characteristics of sound waves, spatial structure of underwater acoustics and the actual effect of various underwater detection. Seafloor sediments have always been an important research object in seafloor engineering, seafloor topographic mapping, ocean shipping and marine defense. Research on seafloor sediments is of great significance to the development of marine economy and the defense of territorial waters. One of the keys to studying seafloor sediments is to study their physical and acoustic characteristics, that is, to study the acoustic characteristic parameters such as sound speed and sound attenuation coefficient by observing the propagation of pulse sound waves in seafloor sediment medium. Through previous experiments, it has been found that the acoustic characteristics of seafloor sediments change greatly with depth, and seawater with different temperature, pressure and salinity has different degrees of sound attenuation. Therefore, it is necessary to design a marine multifunctional physical and acoustic parameter measuring instrument that can measure physical characteristic parameters such as temperature, pressure and salinity, and acoustic characteristic parameters such as sound speed and sound attenuation coefficient.

[0004] In the related art, the longitudinal wave signal can be emitted, collected, processed and saved in situ, and the seabed sediment being measured is completely sampled, but the device is large and it is difficult to realize multipoint measurement, and the real-time measurement data cannot be processed and intuitively displayed, and the efficiency is low; or based on the sound reflection method, data comparison is carried out through a transmitting and receiving channel, and the temperature, depth, salinity and other data can be accurately measured in situ, but the device is large and it is difficult to realize multipoint measurement; another way is to use the propagation attenuation of sound propagation in the measurement process and the sound propagation attenuation and bottom composition determined by experiment or historical data to establish a corresponding table of marine bottom composition sound propagation loss, bottom composition and bottom sound velocity to calculate and analyze the marine bottom composition sound velocity, composition, layer thickness and other parameters and recover the bottom composition, which lacks the measurement of medium frequency band sound wave signals, and the correction of data only depends on the existing geophysical model, and the continuous change of sea conditions and environment will bring large errors to the correction results of real-time in-situ measurement, and the sound wave signals will also interfere with the data through the cable communication mode. The device in the above scheme is not comprehensive enough, such as lacking manual measurement, laboratory measurement, temperature-salinity-depth synchronous measurement, multi-path transmission-reception channel self-switching and the like. SUMMARY

[0005] The present application provides a measurement system and method for marine physical acoustics parameters, aiming to solve the technical problem that the prior art cannot measure multiple marine acoustics parameters uniformly.

[0006] In a first aspect, an embodiment of the present application provides a measurement system for marine physical acoustics parameters, which comprises:

[0007] The host computer module comprises a human-computer interaction interface, and is configured to set a control instruction with measurement parameters according to measurement requirements, and send the control instruction to the communication control module, and perform calculation and correction processing, display and storage on the received acoustics parameter signal and / or physical parameter signal, and obtain signal data according to the acoustics parameter signal and / or the physical parameter signal;

[0008] The sensor module comprises an acoustics sensor unit and a physical parameter measurement sensor unit, and is configured to collect the acoustics parameter signal and / or the physical parameter signal, and send the acoustics parameter signal and / or the physical parameter signal to the interface module;

[0009] an interface module, including a conventional acoustic parameter detection interface unit, a multi-path acoustic parameter detection interface unit, a conventional physical parameter detection interface unit, a multi-path physical parameter detection interface unit, and a communication interface unit, the communication interface unit being configured to realize communication connection with the host computer module, the conventional acoustic parameter detection interface unit, the multi-path acoustic parameter detection interface unit, the conventional physical parameter detection interface unit, and the multi-path physical parameter detection interface unit being configured to realize communication connection with the acoustic sensor unit and the physical parameter measurement sensor unit, and to forward the acoustic parameter signal and / or the physical parameter signal collected by the sensor module to the waveform transceiver module;

[0010] a waveform transceiver module, configured to generate and externally emit an acoustic parameter collection signal, and to synchronously receive the acoustic parameter signal and / or the physical parameter signal forwarded by the interface module while emitting the acoustic parameter collection signal, so as to forward the acoustic parameter signal and / or the physical parameter signal to the communication control module;

[0011] a communication control module, configured to control the waveform transceiver module according to the control instruction, and to perform digital-to-analog conversion on the received acoustic parameter signal and / or the physical parameter signal, so as to transmit the acoustic parameter signal and / or the physical parameter signal to the host computer module.

[0012] Further, the acoustic sensor unit includes a conventional acoustic sensor and a multi-path acoustic sensor, and the physical parameter sensor unit includes a conventional physical parameter measurement sensor and a multi-path physical parameter measurement sensor.

[0013] Further, the multi-path acoustic parameter detection interface unit further includes a multi-path acoustic parameter sending interface subunit and a multi-path acoustic parameter receiving interface subunit.

[0014] Further, the conventional physical parameter measurement sensor includes a seawater depth sensor, a seawater temperature sensor, a seawater salinity sensor, and a seabed sediment temperature sensor, and the multi-path physical parameter measurement sensor is an array sensor including at least one of the seawater depth sensor, the seawater temperature sensor, the seawater salinity sensor, and the seabed sediment temperature sensor.

[0015] Further, the communication control module is further configured to: according to different measurement parameters in the control instruction, control the receiving and transmitting states of the conventional acoustic parameter detection interface unit, the multi-path acoustic parameter sending interface subunit, the multi-path acoustic parameter receiving interface subunit, the conventional physical parameter detection interface unit, and the multi-path physical parameter detection interface unit, so as to control the measurement system to switch between a conventional parameter measurement mode and a multi-path parameter measurement mode.

[0016] Further, the interface module is further configured to:

[0017] connect an external excitation signal generating unit to generate different acoustic parameter acquisition signals to excite the acoustic sensor unit.

[0018] In a second aspect, the embodiments of the present application also provide a measurement method of marine physical acoustic parameters, which is implemented based on the measurement system of any one of the above embodiments, and comprises the following steps:

[0019] The host computer module sends a control instruction containing measurement parameters to the communication control module;

[0020] The communication control module controls the waveform transceiver module to generate an acoustic parameter acquisition signal based on the control instruction, and sends the signal to the interface module;

[0021] The interface module selects a corresponding interface unit according to the acoustic parameter acquisition signal, and excites the corresponding acoustic sensor unit and / or physical parameter measurement sensor unit of the sensor module connected to the interface module;

[0022] The interface module receives the acoustic parameter signal and / or physical parameter signal collected by the sensor module, and forwards the signal to the waveform transceiver module;

[0023] The waveform transceiver module transmits the received acoustic parameter signal and / or physical parameter signal to the communication control module;

[0024] The communication control module performs analog-to-digital conversion on the acoustic parameter signal and / or physical parameter signal to obtain a target parameter result, and sends the target parameter result to the host computer module for display and storage.

[0025] Further, in the step of selecting a corresponding interface unit according to the acoustic parameter acquisition signal and exciting the corresponding acoustic sensor unit and / or physical parameter measurement sensor unit of the sensor module connected to the interface module, according to different acoustic parameter acquisition signals:

[0026] The conventional acoustic parameter detection interface unit is used as both a signal sending end and a signal receiving end to realize conventional parameter measurement;

[0027] The conventional acoustic parameter detection interface unit is used as a signal sending end, and a multi-path acoustic parameter receiving interface subunit is used as a signal receiving end to realize multi-path parameter measurement;

[0028] A multi-path acoustic parameter sending interface subunit is used as a signal sending end, and the conventional acoustic parameter detection interface unit is used as a signal receiving end to realize multi-path parameter measurement;

[0029] The multi-path acoustic parameter sending interface subunit is used as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is used as a signal receiving end, so that multi-path parameter measurement is realized.

[0030] The measurement system can realize double excitation of sinusoidal and pulse wave signals, can simultaneously measure various marine acoustic parameters based on control instructions, can simultaneously monitor marine environmental physical parameters such as salinity and temperature of seawater, pressure and temperature of seabed deposits, and acoustic parameters such as sound velocity and sound attenuation, and correct the results, and can support external power amplification and linear sweep of a transmitted signal, compared with the prior art, the measurement system of the marine physical acoustic parameters is multifunctional and practical, realizes multi-frequency multi-sensor multi-path seamless switching operation portability, and realizes functional integration of in-situ measurement and laboratory measurement. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of a measurement system of marine physical acoustic parameters provided by an embodiment of the present application;

[0032] Figure 2 is a structural schematic diagram of an interface module provided by an embodiment of the present application;

[0033] Figure 3 is a front interface schematic diagram of an interface module provided by an embodiment of the present application;

[0034] Figure 4 is a front interface schematic diagram of a rear interface module provided by an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0036] An embodiment of the present application provides a measurement system of marine physical acoustic parameters, please refer to Figure 1 , Figure 1 is a structural schematic diagram of a measurement system of marine physical acoustic parameters provided by an embodiment of the present application, the measurement system 100 comprises:

[0037] The host computer module 101 comprises a man-machine interface, and is configured to set a control instruction with measurement parameters according to measurement requirements, and send the control instruction to the communication control module, and perform calculation and correction processing on the received acoustic parameter signal and / or physical parameter signal, display, and store signal data obtained according to the acoustic parameter signal and / or the physical parameter signal.

[0038] The sensor module 102 comprises an acoustic sensor unit and a physical parameter measurement sensor unit, and is configured to collect the acoustic parameter signal and / or the physical parameter signal, and send the acoustic parameter signal and / or the physical parameter signal to the interface module.

[0039] The interface module 103 comprises a conventional acoustic parameter detection interface unit, a multi-channel acoustic parameter detection interface unit, a conventional physical parameter detection interface unit, a multi-channel physical parameter detection interface unit, and a communication interface unit, the communication interface unit is configured to realize communication connection with the host computer module, the conventional acoustic parameter detection interface unit, the multi-channel acoustic parameter detection interface unit, the conventional physical parameter detection interface unit, and the multi-channel physical parameter detection interface unit are configured to realize communication connection with the acoustic sensor unit and the physical parameter measurement sensor unit, and forward the received acoustic parameter signal and / or physical parameter signal collected by the sensor module to the waveform transceiver module.

[0040] The waveform transceiver module 104 is configured to generate and externally emit an acoustic parameter collection signal, and simultaneously receive the acoustic parameter signal and / or the physical parameter signal forwarded by the interface module when emitting the acoustic parameter collection signal, to forward to the communication control module. The acoustic parameter collection signal can be a basic sine wave signal or a rectangular pulse signal, and the editable waveform signal includes a modulated sine signal, an LFM signal, etc.

[0041] The communication control module 105 is configured to control the waveform transceiver module according to the control instruction, and perform digital-to-analog conversion on the received acoustic parameter signal and / or physical parameter signal, to transmit to the host computer module.

[0042] Further, the acoustic sensor unit comprises a conventional acoustic sensor and a multi-channel acoustic sensor, and the physical parameter sensor unit comprises a conventional physical parameter measurement sensor and a multi-channel physical parameter measurement sensor. The conventional acoustic sensor and the multi-channel acoustic sensor can also be implemented based on a transducer structure.

[0043] Further, the multi-channel acoustic parameter detection interface unit further comprises a multi-channel acoustic parameter sending interface subunit and a multi-channel acoustic parameter receiving interface subunit.

[0044] Exemplary, the structural schematic diagram of the interface module 103 provided by the embodiment of the present application is shown in the figure Figure 2 As shown in the figure, the interface module 103 includes a conventional acoustic parameter detection interface unit 1011, a multi-channel acoustic parameter sending interface subunit 10121, a multi-channel acoustic parameter receiving interface subunit 10122, a conventional physical parameter detection interface unit 1012, a multi-channel physical parameter detection interface unit 1014, and a communication interface unit 1015. Preferably, it also includes other interface units 1016, which are used to expand the functions of the measurement system 100 and to realize power supply and data output in the embodiment of the present application.

[0045] Specifically, the conventional acoustic parameter detection interface unit and the conventional physical parameter detection interface unit are respectively used to connect conventional acoustic sensors and conventional physical parameter measurement sensors; the multi-channel acoustic parameter sending interface subunit and the multi-channel acoustic parameter receiving interface subunit, and the multi-channel physical parameter detection interface unit are used to connect multi-channel acoustic sensors and multi-channel physical parameter measurement sensors. According to different control instructions, the embodiment of the present application can realize the quick connection of transmission and reception of multi-frequency acoustic signals and multi-physical parameter measurement signals through automatic multi-channel interface time scanning control.

[0046] Further, the communication control module is also used to: according to the different measurement parameters in the control instructions, control the receiving and transmitting states of the conventional acoustic parameter detection interface unit, the multi-channel acoustic parameter sending interface subunit, the multi-channel acoustic parameter receiving interface subunit, the conventional physical parameter detection interface unit, and the multi-channel physical parameter detection interface unit, to control the switching of the measurement system between the conventional parameter measurement mode and the multi-channel parameter measurement mode.

[0047] In actual implementation, the measurement system for laboratory measurement adopts a DC 24V-5A DC power supply transmitter for power supply, the input voltage range is 100-240VAC, and the battery scheme selects a DC 24V lithium ion battery pack, which can be switched to a lithium ion DC battery pack for power supply through a power supply switch, wherein the lithium ion DC battery pack is mainly used for in-situ measurement or field operation.

[0048] Further, the physical parameter measurement sensor includes a seawater depth sensor, a seawater temperature sensor, a seawater salinity sensor, and a seabed sediment temperature sensor, and the multi-channel physical parameter measurement sensor is an array sensor including at least one of the seawater depth sensor, the seawater temperature sensor, the seawater salinity sensor, and the seabed sediment temperature sensor.

[0049] In actual implementation, the physical parameter measurement sensor unit can further include more sensor types, and the multi-path physical parameter detection interface unit realizes point array area acquisition through the interconnected sensors, such as a plurality of temperature sensors forming a one-dimensional linear array, or a two-dimensional surface array, or a three-dimensional body array of the temperature field measurement.

[0050] Further, the interface module is further used for:

[0051] The external excitation signal generation unit is connected to generate different acoustic parameter acquisition signals to excite the acoustic sensor unit.

[0052] The interface module can be externally connected to a signal generator as an excitation signal source to emit an arbitrarily editable waveform signal, so as to excite the emission sensor through a power amplifier, realize the signal-driven sensor based on MATLAB editing, obtain the functions of good noise reduction, tail wave suppression, and matching of the sensor excitation waveform, and facilitate the expansion research demand of more special waveform scientific research detection.

[0053] As an embodiment example, the multi-path acoustic parameter transmission interface subunit and the multi-path acoustic parameter receiving interface subunit can realize array access of the same frequency band transducer, and can also realize array access of different frequency band transducers, realize wide frequency measurement through a group of acoustic emission and receiving transducers with a center frequency of 30 kHz, 60 kHz, 120 kHz, 250 kHz, and 400 kHz, and through one-time connection, realize one-time acoustic characteristic wide frequency band measurement in laboratory measurement or in-situ measurement, and are used for frequency dispersion characteristic measurement and sound propagation loss and frequency relationship measurement.

[0054] The host computer module in the embodiment of the application has two modes of manual measurement and automatic measurement, can operate the setting of acoustic measurement parameters, the measurement of marine physical parameters, real-time waveform measurement and waveform display, and has functions of data storage and transmission, and in actual implementation, the host computer module can be realized through a personal computer, so that the data can be processed to improve the readability of marine acoustic physical data.

[0055] Exemplarily, in the embodiment of the present application, the waveform transceiving module is configured to generate and externally emit an acoustic parameter acquisition signal, wherein the acoustic parameter acquisition signal is a basic sine wave signal or a rectangular pulse signal, the frequency range of the acoustic parameter acquisition signal is 1 kHz-500 kHz, the number of excitation waveforms is 1-8, and the editable waveform signal includes a modulated sine signal, an LFM signal, and the like. The ultrasonic wave is generated due to the fact that the pulse signal is applied to the piezoelectric material to convert the electrical signal into an acoustic signal. As an implementation manner, the waveform transceiving module can adopt the method of applying a transient excitation signal to the surface of the piezoelectric material to realize the emission of the ultrasonic signal by the analog ultrasonic probe. In the field of ultrasonic detection, the sine wave pulse signal is usually modulated by a Hanning window to serve as an ultrasonic source signal, that is:

[0056]

[0057] wherein P(t) is the source signal of the ultrasonic wave, n is the number of periods, f c is the detection frequency.

[0058] The sine wave signal modulated by the Hanning window can avoid the high-frequency interference and energy spectrum leakage of the source signal, and is consistent with the actual detection source signal, but a suitable number of Hanning window modulation periods need to be selected to increase the nonlinear accumulation effect and reduce the waveform aliasing.

[0059] The host computer module can calculate the target acoustic parameter of the seawater sound velocity according to the acoustic parameter signal, wherein the seawater sound velocity is defined as c w , which satisfies:

[0060]

[0061] wherein T, P, and S respectively represent the temperature, depth, and salinity of seawater, K f (T, P, S) and p f (T, P, S) respectively represent the bulk modulus of seawater and the density of seawater, and can be calculated by the seawater state equation.

[0062] The communication control module can also be configured to:

[0063] The temperature, salinity, and depth of the seabed sediment are provided for the effective density fluid model to calculate the target acoustic parameter according to the physical parameter signal. The bottom seawater sound velocity calculated by measurement is combined to provide parameters for the host computer device to correct the acoustic parameter signal based on the Hamilton sound velocity ratio method.

[0064] Specifically, in the embodiment of the present application, the temperature is an important item, and the real-time measurement of the acoustic characteristics and the sediment temperature can directly obtain the seabed sediment acoustic signal waveform under the current temperature, and the correction can be performed based on the temperature.

[0065] The correction of the laboratory sound velocity measurement results can be based on the Hamilton method to obtain the sound velocity ratio R of the seabed sediment and seawater at 23℃ and 1 standard atmosphere in the environment 23 , and the sound velocity ratio R in-situ of the seabed in the original state, R being the sound velocity ratio average, and the correction model thereof can be expressed as follows (1) formula:

[0066] R = R 23 = R in-situ (1) ;

[0067] The data required for the correction include the sound velocity V' w of seawater in the seabed in the original state, the sound velocity Vw of seawater in the seabed in the standard measurement environment, and the sound velocity Vs of the sediment sample. The sound velocity ratio and the sound velocity V' s of the sediment in the seabed in the original state are calculated by the following formulas (2) and (3) respectively:

[0068] R = V s / V w (2) ;

[0069] V' s = R × V' w (3) ;

[0070] The sound velocities of the sediment and seawater in the standard measurement environment can be directly measured. The sound velocity of seawater in the seabed in the original state can be calculated by applying the formula, such as the Mackenzie formula (4) with very high precision:

[0071] V' w = 1448.96 + 4.591T - 5.304 × 10 -2 T 2 + 2.374 × 10 -4 T 3 + 1.340 (S - 35) + 1.630 × 10 -2 D + 1.657 × 10 -7 D 2 - 1.025 × 10 -2 T (s - 35) - 7.139 × 10 -13 T D 3 (4) ;

[0072] In the formula, T is the temperature, ranging from 0 to 30℃; D is the depth, ranging from 0 to 8000m; and S is the salinity, ranging from 30 to 40.

[0073] The sound velocity ratio average is verified by applying the sound velocity ratio average to correct the measured sound velocity values at various temperatures, thereby generalizing the Hamilton model, and the sound velocity ratio R TAlso keep R, if the measured ambient temperature does not meet 23 DEG C, then can directly use correction method to correct to standard measurement environment or seabed in-situ state.

[0074] According to the above:

[0075]

[0076] In the formula, And Respectively represent the sediment sound speed and the sound speed of seawater in the T ℃ room temperature state.

[0077] And based on the salinity data, the water content and porosity of the seabed sediment can be corrected.

[0078] For example, when the measurement system is implemented based on the interface of Figure 3 , Figure 4 When the measurement system is implemented based on the interface of

[0079] The measurement function of the sound wave transceiver, the measurement system can realize that one transmitting sensor transmits and three receiving sensors simultaneously receive, wherein the R3_OUT port can be connected to an external device to observe the ultrasonic signal received on R3; In addition, a multi-transmitting and receiving function different from the conventional measurement can also be realized, and the transmitting and receiving sensors are connected to the adapter plate and then connected to the multi-transmitting port and the multi-receiving port respectively.

[0080] The power amplifier function, the measurement system can switch the internally generated pulse wave and the sine wave to the mode of the external signal generator providing the trigger signal source, and the trigger signal amplitude must be between 3.5V-5V. When implemented, first, the trigger signal switch is set to TX_IN / external trigger, the signal generator signal output port is connected to the TX_IN / external trigger port, the TX_OUT port is connected to the external trigger synchronization port of the signal generator, and the measurement mode selected by the upper device software of the measurement system should be the same as the mode of the signal generator output waveform.

[0081] The measurement system has the advantages that a high-precision, multi-functional and integrated marine physical acoustics parameter measurement system is provided, the measurement system can realize double excitation of sine and pulse wave signals, can simultaneously measure various marine acoustics parameters based on control instructions, can simultaneously monitor marine environmental physical parameters such as the salinity, temperature of seawater, pressure and temperature of seabed sediment, and acoustics parameters such as sound speed and sound attenuation, and correct the results, and can support external power amplification and linear sweep of the transmitting signal, compared with the prior art, the measurement system of the marine physical acoustics parameters is multi-functional and practical, the multi-channel seamless switching operation of the multi-frequency band and multi-sensor is realized, and the function integration of the in-situ measurement and the laboratory measurement is realized.

[0082] The embodiment of the present application also provides a measurement method of the marine physical acoustics parameter, which is realized based on the measurement system of any one of the above embodiments, and comprises the following steps:

[0083] S1, a host computer module sends a control instruction containing a measurement parameter to a communication control module;

[0084] S2, the communication control module controls a waveform transceiver module to generate an acoustics parameter acquisition signal based on the control instruction, and sends the acoustics parameter acquisition signal to an interface module;

[0085] S3, the interface module selects a corresponding interface unit according to the acoustics parameter acquisition signal, and excites a corresponding acoustics sensor unit and / or a physical parameter measurement sensor unit of a sensor module connected to the interface module;

[0086] S4, the interface module receives an acoustics parameter signal and / or a physical parameter signal collected by the sensor module, and forwards the acoustics parameter signal and / or the physical parameter signal to the waveform transceiver module;

[0087] S5, the waveform transceiver module transmits the received acoustics parameter signal and / or the physical parameter signal to the communication control module;

[0088] S6, the communication control module performs analog-digital conversion on the acoustics parameter signal and / or the physical parameter signal, obtains a target parameter result, and sends the target parameter result to the host computer module for display and storage.

[0089] Further, in the step S3, according to the acoustics parameter acquisition signal, the interface module selects a corresponding interface unit, and excites a corresponding acoustics sensor unit and / or a physical parameter measurement sensor unit of a sensor module connected to the interface module, wherein according to different acoustics parameter acquisition signals:

[0090] The conventional acoustics parameter detection interface unit is simultaneously used as a signal sending end and a signal receiving end, so that conventional parameter measurement is realized.

[0091] The conventional acoustics parameter detection interface unit is used as a signal sending end, and a multi-path acoustics parameter receiving interface subunit is used as a signal receiving end, so that multi-path parameter measurement is realized.

[0092] A multi-path acoustics parameter sending interface subunit is used as a signal sending end, and the conventional acoustics parameter detection interface unit is used as a signal receiving end, so that multi-path parameter measurement is realized.

[0093] The multi-path acoustic parameter sending interface subunit is used as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is used as a signal receiving end, so that multi-path parameter measurement is realized.

[0094] As an example, the acoustic parameter measurement method of 1 sending and n receiving can be realized by using the conventional acoustic parameter detection interface unit as a signal sending end and a signal receiving end. In the implementation, n acoustic characteristic measurement parameters in a region are obtained by using n receiving sensors of the same frequency band, and n≤3.

[0095] The conventional acoustic parameter detection interface unit is used as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is used as a signal receiving end, so that 1 sending and n receiving acoustic parameter measurement is realized. Specifically, n acoustic characteristic measurement parameters in a region are obtained by using n receiving sensors of the same frequency band, and n>3.

[0096] The multi-path acoustic parameter sending interface subunit is used as a signal sending end, and the conventional acoustic parameter detection interface unit is used as a signal receiving end, so that m sending and n receiving acoustic parameter measurement is realized. Specifically, m*n acoustic characteristic measurement parameters in an array region are obtained by using m sending sensors of the same frequency band and n receiving sensors of the same frequency band, or m sending sensors of different frequency bands and n receiving sensors covering all sending frequency bands, and m>1 and n≤3.

[0097] The multi-path acoustic parameter sending interface subunit is used as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is used as a signal receiving end, so that m sending and n receiving acoustic parameter measurement is realized. Specifically, m*n acoustic characteristic measurement parameters in an array region are obtained by using m sending sensors of the same frequency band and n receiving sensors of the same frequency band, or m sending sensors of different frequency bands and n receiving sensors covering all sending frequency bands, and m>1 and n>3.

[0098] Meanwhile, on the basis of the implementation of the multi-path physical parameter measurement sensor as an array, the measurement of one-dimensional linear array, two-dimensional surface array, or three-dimensional body array of the physical acoustic parameters of the measured region of the ocean and seabed can be realized in the above multi-path parameter measurement.

[0099] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium. When the program is executed, the processes of the above-mentioned embodiment methods can be included. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM).

[0100] It should be noted that in this document, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element.

[0101] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and a general hardware platform with necessary functions. Of course, they can also be realized by hardware, but in many cases, the former is a better embodiment. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disc, optical disc) and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner or network device) execute the methods described in the embodiments of the present application.

[0102] The embodiments of the present application are described above in combination with the accompanying drawings. The disclosed is only the preferred embodiment of the present application, but the present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative, not restrictive. Those skilled in the art can make many equivalent changes without departing from the purpose of the present application and the scope of the claims.

Claims

1. A system for measuring an ocean physical acoustics parameter, characterized in that, The measurement system comprises: A host computer module comprising a human-computer interaction interface, the host computer module being configured to set a control instruction with measurement parameters according to a measurement requirement, and send the control instruction to a communication control module, and perform calculation and correction processing on received acoustic parameter signals and other physical parameter signals, display, and store signal data obtained from the acoustic parameter signals and the other physical parameter signals; A sensor module comprising an acoustic sensor unit and an other physical parameter measurement sensor unit, the sensor module being configured to collect the acoustic parameter signals and the other physical parameter signals, and send the acoustic parameter signals and the other physical parameter signals to an interface module; the acoustic sensor unit comprises a conventional acoustic sensor and a multi-channel acoustic sensor, and the other physical parameter measurement sensor unit comprises a conventional other physical parameter measurement sensor and a multi-channel other physical parameter measurement sensor; The conventional other physical parameter measurement sensor comprises a seawater depth sensor, a seawater temperature sensor, a seawater salinity sensor, and a seabed sediment temperature sensor, and the multi-channel other physical parameter measurement sensor is an array sensor comprising at least one of the seawater depth sensor, the seawater temperature sensor, the seawater salinity sensor, and the seabed sediment temperature sensor; The interface module comprises a conventional acoustic parameter detection interface unit, a multi-channel acoustic parameter detection interface unit, a conventional other physical parameter detection interface unit, a multi-channel other physical parameter detection interface unit, and a communication interface unit, the communication interface unit being configured to realize communication connection with the host computer module, the conventional acoustic parameter detection interface unit, the multi-channel acoustic parameter detection interface unit, the conventional other physical parameter detection interface unit, and the multi-channel other physical parameter detection interface unit being configured to realize communication connection with the acoustic sensor unit and the other physical parameter measurement sensor unit, and forward the acoustic parameter signals and the other physical parameter signals collected by the sensor module to a waveform transceiver module; the multi-channel acoustic parameter detection interface unit further comprises a multi-channel acoustic parameter sending interface subunit and a multi-channel acoustic parameter receiving interface subunit; The waveform transceiver module is configured to generate and externally emit acoustic parameter collection signals, and simultaneously receive the acoustic parameter signals and the other physical parameter signals forwarded by the interface module while emitting the acoustic parameter collection signals, to forward the acoustic parameter signals and the other physical parameter signals to the communication control module; The communication control module is configured to control the waveform transceiver module according to the control instruction, and perform analog-digital conversion on the received acoustic parameter signals and other physical parameter signals, to transmit the acoustic parameter signals and the other physical parameter signals to the host computer module; The interface module is further configured to connect an external excitation signal generation unit to generate different acoustic parameter collection signals to excite the acoustic sensor unit; According to the different acoustic parameter collection signals: The conventional acoustic parameter detection interface unit is simultaneously used as a signal sending end and a signal receiving end to realize conventional acoustic parameter measurement. The regular acoustic parameter detection interface unit is taken as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is taken as a signal receiving end, so that multi-path acoustic parameter measurement is realized. The multi-path acoustic parameter sending interface subunit is taken as a signal sending end, and the regular acoustic parameter detection interface unit is taken as a signal receiving end, so that multi-path acoustic parameter measurement is realized. The multi-path acoustic parameter sending interface subunit is taken as a signal sending end, and the multi-path acoustic parameter receiving interface subunit is taken as a signal receiving end, so that multi-path acoustic parameter measurement is realized.

2. The system for measuring a physical oceanographic acoustic parameter of claim 1, wherein, The communication control module is further configured to control the receiving and sending states of the regular acoustic parameter detection interface unit, the multi-path acoustic parameter sending interface subunit, the multi-path acoustic parameter receiving interface subunit, the regular other physical parameter detection interface unit and the multi-path other physical parameter detection interface unit according to the different measurement parameters in the control instruction, so as to control the switching of the measurement system between the regular parameter measurement mode and the multi-path parameter measurement mode.

3. A method of measuring an ocean physical acoustics parameter, the method being implemented based on the system for measuring an ocean physical acoustics parameter according to any one of claims 1-2, characterized in that, The measurement method comprises the following steps: The host computer module sends a control instruction containing a measurement parameter to the communication control module; The communication control module controls the waveform transceiving module to generate an acoustic parameter acquisition signal based on the control instruction, and sends the acoustic parameter acquisition signal to the interface module; The interface module selects a corresponding interface unit according to the acoustic parameter acquisition signal, and excites a corresponding acoustic sensor unit and other physical parameter measurement sensor unit of the sensor module connected to the interface module; The interface module receives the acoustic parameter signal and the other physical parameter signal collected by the sensor module, and forwards the acoustic parameter signal and the other physical parameter signal to the waveform transceiving module; The waveform transceiving module transmits the received acoustic parameter signal and other physical parameter signal to the communication control module; The communication control module performs analog-digital conversion on the acoustic parameter signal and the other physical parameter signal, obtains a target parameter result, and sends the target parameter result to the host computer module for display and storage.

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