CN206804881U - digital hydrophone system - Google Patents
digital hydrophone system Download PDFInfo
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- CN206804881U CN206804881U CN201720588201.7U CN201720588201U CN206804881U CN 206804881 U CN206804881 U CN 206804881U CN 201720588201 U CN201720588201 U CN 201720588201U CN 206804881 U CN206804881 U CN 206804881U
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Abstract
The utility model discloses a kind of digital hydrophone system, provided with Stainless Steel Shell, in addition to underwater sound sensor and the preamplifier, high-pass filter, analog-digital converter, signal processor and the data storage that are built in Stainless Steel Shell.The signal processor includes dsp chip and the peripheral circuit electrically connected with the dsp chip, the underwater sound sensor, preamplifier are connected, high-pass filter, analog-digital converter are sequentially connected, the signal output part of the analog-digital converter is bi-directionally connected with the dsp chip, the data storage is bi-directionally connected with the dsp chip, and the signal processor connects display by data cable.The display is used to show the contents such as time-domain information and the frequency domain information of underwater sound signal, and to observe the time domain of underwater sound signal and frequency domain information structure, solid foundation is provided for further signal analysis.
Description
Technical field
The utility model belongs to underwater exploration technical field, and in particular to a kind of digital hydrophone system.
Background technology
It is transducer generally by scales in underwater sound field, and receive transducer can be described as hydrophone.Hydrophone is
Underwater sound signal is converted to a kind of transducer of electric signal, its to the underwater complex environment of human research, target fixation and recognition,
Subsurface communication navigation, underwater noise measurement etc. are multi-field to be respectively provided with important function, therefore in Underwater Acoustics Engineering, hydrophone is located always
In a basic status.Traditional hydrophone only uses as sensor, typically directly believes the simulation of sensor output
Number（Or after amplification）The mode for being transmitted and handling, but signal is vulnerable to the length of wire, external environment in transmitting procedure
The interference of noise, and need the complexity such as preamplifier, wave filter, signal conditioning circuit, signal acquisition circuit, oscillograph to set
Standby collection, the feature of signal Analysis, while the traditional hydrophone of coming together is also without control, record storage, signal display function.
The main direction of development of present hydrophone is digitlization, networking, systematization, and it is basis to digitize.
Utility model content
The utility model is directed to the situation of prior art, there is provided a kind of digital hydrophone system.
The utility model uses following technical scheme, and the digital hydrophone system is provided with Stainless Steel Shell, in addition to water
Sonic transducer and it is built in the preamplifier of Stainless Steel Shell, high-pass filter, analog-digital converter, signal processor sum
According to memory, wherein：
The signal processor includes dsp chip and the peripheral circuit electrically connected with the dsp chip, the peripheral circuit
Including SDRAM, FLASH, crystal oscillator and reset chip, above-mentioned crystal oscillator connects the analog-digital converter simultaneously；
The signal output part of the underwater sound sensor is connected with the preamplifier, and the signal of the preamplifier is defeated
Go out end and connect the high-pass filter, the signal output part of the high-pass filter connects the analog-digital converter, the modulus
The signal output part of converter is bi-directionally connected with the dsp chip, and the data storage is bi-directionally connected with the dsp chip；
The preamplifier has high-gain passage and a low-gain channel, the high-gain passage and low-gain channel
Gain differs 40dB.
According to above-mentioned technical proposal, the digital hydrophone system also includes display and data cable, the letter
Number processor is connected to computer by data cable so that the data storage is identified as removable deposit by computer
Equipment is stored up, the display is used for the time-domain information and frequency domain information for showing underwater sound signal.
According to above-mentioned technical proposal, the Stainless Steel Shell is in thin walled cylindrical, and its both ends is covered with closure, closure
Two layers of watertight rubber ring is built-in with, the bottom of closure is connected with the underwater sound sensor, and top and the watertight of closure patch
Part is connected.
According to above-mentioned technical proposal, the Stainless Steel Shell is integrally formed using 316 stainless steels and is made, and its outer surface has
Groove.
According to above-mentioned technical proposal, the underwater sound sensor uses piezoelectric ceramic hydrophone, and the analog-digital converter uses
The Sigma-Delta ADC of 24 bits, the dsp chip is using the double MAC of 16 fixed points dsp chip, the data storage
Using TF data cards.
According to above-mentioned technical proposal, data signal isolating chip is provided between the analog-digital converter and signal processor.
According to above-mentioned technical proposal, the signal processor has two kinds of programmable wave filters, including the programmable filters of FIR
Ripple device and IIR programmable filters.
According to above-mentioned technical proposal, the data cable includes usb line and power line, the usb line
Vulcanize with power line in same root watertight cable.
Digital hydrophone system, its advantage are disclosed in the utility model, are no longer needed compared with traditional hydrophone
Preamplifier, wave filter, signal acquisition circuit etc. is wanted to use the complex device needed for hydrophone, it is proposed that a kind of digitized
Hydrophone system.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
Fig. 2 is the fundamental diagram of the utility model preferred embodiment.
Fig. 3 is the function structure chart of the utility model preferred embodiment.
Reference includes：10- Stainless Steel Shells；11- closures；12- watertight rubber rings；13- underwater electrical connectors；20-
Underwater sound sensor；30- preamplifiers；31- high-gain passages；32- low-gain channels；40- high-pass filters；50- moduluses turn
Parallel operation；60- signal processors；61-DSP chips；62- peripheral circuits；70- data storages；80- displays；90- data transfers
Cable.
Embodiment
The utility model discloses a kind of digital hydrophone system, with reference to preferred embodiment, to of the present utility model
Embodiment is further described.
Referring to Fig. 2 of accompanying drawing, it is preferable that the digital hydrophone system is provided with Stainless Steel Shell 10, and the digital water is listened
Device system also includes connecting the underwater sound sensor 20 of Stainless Steel Shell 10, preamplifier 30, high-pass filter 40, analog-to-digital conversion
Device 50, signal processor 60 and data storage 70.
Referring to Fig. 1 of accompanying drawing, it is preferable that the Stainless Steel Shell 10 is integrally formed using 316 stainless steels and is made, and makes its tool
There are more preferable airtight waterproof performance, decay resistance and elevated temperature strength performance.Preferably, the Stainless Steel Shell 10 is in thin-wall circular
Cylindricality, its both ends are covered with closure 11, and closure 11 is built-in with two layers of watertight rubber ring 12, the bottom of closure 11 with it is described
Underwater sound sensor 20 is connected, and the top of closure 11 is connected with underwater electrical connector 13.Preferably, the Stainless Steel Shell 10 is outer
Surface has groove 14, available for lash rope or anchor ear fixed equipment.
Referring to Fig. 3 of accompanying drawing, the signal output part of the underwater sound sensor 20 is connected with the preamplifier 30.It is preferred that
Ground, the underwater sound sensor 20 use piezoelectric ceramic hydrophone, have horizontal comprehensive, ball-type, a wide range of frequencies of 10Hz ~ 80kHz
Underwater sound signal is converted to voltage signal by the features such as wide, the piezoelectric ceramics of piezoelectric ceramic hydrophone.
Preferably, the preamplifier 30 of low noise has high-gain passage 31 and low-gain channel 32.It is different from
Traditional hydrophone adds before fixed gain the method put to solve anti-interference problem, and the preamplifier 30 can increase substantially
Signal receives dynamic range.The gain difference 40dB of the high-gain passage 31 and low-gain channel 32, the low-gain channel
32 are mainly used in measuring high sound source level signal, including explosive sound, sonar signals etc., and the high-gain passage 31 has relatively low
Self noise, be mainly used in measuring faint sound-source signal, including ambient noise, sailing noise etc..
Preferably, the signal output part of the preamplifier 30 connects the high-pass filter 40.The high-pass filtering
Device 40 is used to filter out low frequency signal interference, and when monitoring signals are in high band, the high-pass filter 40 can effectively filter out low
The interference signal of frequency range.
Preferably, the signal output part of the high-pass filter 40 connects the analog-digital converter 50.The analog-to-digital conversion
For device 50 using the Sigma-Delta ADC of high performance 24 bit, sampling rate has that dynamic range is big up to 192ksps, right
The noise suppressed of high frequency is good, it is not necessary to the advantages that complicated frequency overlapped-resistable filter.
Preferably, the signal processor 60 includes dsp chip 61 and the peripheral circuit electrically connected with the dsp chip 61
62, the signal output part of the high-pass filter 40 is bi-directionally connected with the dsp chip 61.Preferably, the dsp chip 61 is adopted
With the double MAC of 16 fixed points of TI companies dsp chip, there is 60MHz~120MHz clock frequencies, 320K byte zero-waiting shapes
On state piece the features such as RAM, and include SDRAM, FLASH, crystal oscillator with abundant peripheral resources, the peripheral circuit 62 and answer
Position chip, above-mentioned crystal oscillator connect the analog-digital converter 50 simultaneously.
Preferably, the signal processor 60 has two kinds of programmable wave filters, including FIR programmable filters and
IIR programmable filters, filter length and coefficient are controllable, can be handled using wave filter, can also bypass filter.
Pre-processed by above-mentioned wave filter, can effectively remove interference, preferably extract the characteristic information of signal.
Preferably, the data storage 70 is bi-directionally connected with the dsp chip 61, and the data storage 70 is used for water
The stored record of acoustical signal and after-treatment.Preferably, the data storage 70 preferably uses TF data cards, has small volume
The features such as capacity is big, maximum is supported to arrive 256GB capacity.TF data cards preserve data using FATFS file system formats, store number
Named according to filename according to the holding time, data directory uses two-stage catalogue form, and catalogue is used as using " date " under root
Name, data file preserves a file, the high low gain two of data content in one minute with " Hour Minute Second " for filename under subdirectory
Individual passage alternately preserves.
Further, the digital hydrophone also includes display（Display end）80 and data cable 90, the letter
Number processor 60 passes through data cable 90 and connects display 80.Preferably, data cable uses the long line skills of USB2.0
Art is transmitted, and operating distance is up to 70 meters, and usb line and power line are vulcanized on same root watertight cable.Traditional
Hydrophone is simulation small-signal due to transmission, and there is signal attenuation, the defects of being easily disturbed, can not carry out long line biography
It is defeated, and the transmission of digital hydrophone is data signal, is typically carried out data transmission using USB or Ethernet.USB data transmission
Generally no greater than 5 meters of distance, the data transfer utilizes USB extended line control chips, and usb signal is changed into network signal, in
Between be transmitted using 5 classes or super category 5 twisted pair, substantially prolongs transmission range, extend digital hydrophone use model
Enclose.
Further, the display 80 can also further connect outside controlling equipment, such as computer, the display
80 also can be as the part using computer as the outside controlling equipment of representative.Meanwhile the digital hydrophone system is in itself
Also outside controlling equipment, such as computer can be directly connected to.When digital hydrophone system is connected with computer, the data are deposited
Reservoir 70 can be identified as movable memory equipment, and the file management system that computer can be used directly in operating personnel accesses storage
In the related data of TF data cards, operating personnel also can control the data storage 70 only to preserve a passage by computer
Data.When the signal processor 60 is with using outside controlling equipment software message communication of the computer as representative, it can use and make by oneself
The message format of justice.Self-defined message adds frame head and data verifying function, and message content includes system mode self-test, set
Acquisition parameter, data acquisition start and stopped, data preservation starts and stopped, digital independent starts and stop, data are wiped, be soft
Part online upgrading etc..
Further, it is transmitted using USB2.0 technologies, digital hydrophone system can be patched directly on computer,
As a peripheral hardware of computer, similar to the sound card of USB interface.It is powered, is passed using the USB port power supply of computer simultaneously
By boosting, decompression during defeated, there is provided give hydrophone power supply, reduce the needs of external power source.Digital hydrophone is made simultaneously
For a USB peripheral, multiple hydrophones can work simultaneously, can monitor the ambient noise information of multiple measurement points simultaneously.
Further, in order to reach the low purpose of background electrical noise, a series of noise reduction measure is taken.For example, to mould
Intend isolation and filtering process that power supply has carried out power supply, solve the interference of power supply noise.Preferably, the analog-digital converter 50 with
Data signal isolating chip is set up between signal processor 60（Not shown in figure）, make analog portion of the present utility model and numeral
Part isolates, and has obstructed interference of the switching noise to signal.The simultaneously targeted preamplifier that must select low noise, takes into account
The influence of current noise and voltage noise, especially inhibit the current noise of low-frequency range.
Further, the outside controlling equipment matching using computer as representative has special display end software, for showing
The contents such as the time-domain information and frequency domain information of underwater sound signal.Waveform is typically monitored using oscillograph different from traditional hydrophone, this
The digital hydrophone system of utility model is real on the display end software of computer by gathering original waveform and uploading in real time
When show time domain waveform and frequency-domain waveform, these data can store simultaneously backup for used in later analysis.Outside controlling equipment
The data inputted in real time can also be converted into power spectrum data, so as to further analytical acoustics signal.
Further, the display end software when domain-functionalities including time domain waveform show and signal characteristic statistics etc. in
Hold.Wave data is shown hydrophone and receives original signal amplitude and time relationship.Display end software can be with control data
Storage, time domain data can preserve into .WAV files, be played available for other audio playing softwares or further processing.When
The signal characteristic statistics in domain includes peakvalue's checking and average detection, and the data Time-domain Statistics characteristic in a period of time is carried out
Calculate and show.
Further, power spectrum of the frequency domain function of the display end software including signal is shown, window function is chosen.To defeated
The signal subsection entered carries out FFT processing, by being compensated to result, the signal spectrum level in some frequency of real-time display.
Result is compensated refer to compensate different frequency under the conditions of hydrophone receiving sensitivity difference.Display end software is
FFT processing functions provide various window functions, in order to the leakage of frequency spectrum is reduced when data are transformed into frequency domain, there is provided window
Function includes the conventional window functions such as rectangular window, quarter window, HANNING windows, HAMMING windows., can by the processing and display of frequency domain
To observe the frequency domain information structure of signal, solid foundation is provided for further analysis.
For a person skilled in the art, the technical scheme described in foregoing embodiments can still be repaiied
Change, or equivalent substitution is carried out to which part technical characteristic, all within the spirit and principles of the utility model, that is made is any
Modification, equivalent substitution, improvement etc., should be included in the scope of protection of the utility model.
Claims (8)
1. a kind of digital hydrophone system, it is characterised in that provided with Stainless Steel Shell, in addition to underwater sound sensor and be built in
Preamplifier, high-pass filter, analog-digital converter, signal processor and the data storage of Stainless Steel Shell, wherein：
The signal processor includes dsp chip and the peripheral circuit electrically connected with the dsp chip, and the peripheral circuit includes
SDRAM, FLASH, crystal oscillator and reset chip, above-mentioned crystal oscillator connect the analog-digital converter simultaneously；
The signal output part of the underwater sound sensor is connected with the preamplifier, the signal output part of the preamplifier
The high-pass filter is connected, the signal output part of the high-pass filter connects the analog-digital converter, the analog-to-digital conversion
The signal output part of device is bi-directionally connected with the dsp chip, and the data storage is bi-directionally connected with the dsp chip；
The preamplifier has high-gain passage and low-gain channel, the gain of the high-gain passage and low-gain channel
Differ 40dB.
2. digital hydrophone system according to claim 1, it is characterised in that the digital hydrophone system also includes aobvious
Show device and data cable, the signal processor is connected to computer by data cable so that the data are deposited
Reservoir is identified as movable memory equipment by computer, and the display is used for the time-domain information for showing underwater sound signal and frequency domain letter
Breath.
3. digital hydrophone system according to claim 1, it is characterised in that the Stainless Steel Shell is in thin wall cylindrical
Shape, its both ends are covered with closure, and closure is built-in with two layers of watertight rubber ring, the bottom of closure and the underwater sound sensor
It is connected, the top of closure is connected with underwater electrical connector.
4. according to the digital hydrophone system described in any claim in claim 1 or 3, it is characterised in that it is described not
Rust steel sheel is integrally formed using 316 stainless steels to be made, and its outer surface has groove.
5. digital hydrophone system according to claim 1, it is characterised in that the underwater sound sensor uses piezoelectric ceramics
Hydrophone, the analog-digital converter use the Sigma-Delta ADC of 24 bits, and the dsp chip is using the double MAC of 16 fixed points
Dsp chip, the data storage uses TF data cards.
6. digital hydrophone system according to claim 1, it is characterised in that the analog-digital converter and signal processor
Between be provided with data signal isolating chip.
7. according to the digital hydrophone system described in any claim in claim 1 or 6, it is characterised in that the letter
Number processor has two kinds of programmable wave filters, including FIR programmable filters and IIR programmable filters.
8. digital hydrophone system according to claim 2, it is characterised in that the data cable connects including USB
Mouth line and power line, the usb line and power line vulcanize in same root watertight cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588201.7U CN206804881U (en) | 2017-05-25 | 2017-05-25 | digital hydrophone system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720588201.7U CN206804881U (en) | 2017-05-25 | 2017-05-25 | digital hydrophone system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206804881U true CN206804881U (en) | 2017-12-26 |
Family
ID=60742357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720588201.7U Active CN206804881U (en) | 2017-05-25 | 2017-05-25 | digital hydrophone system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206804881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132570A (en) * | 2017-05-25 | 2017-09-05 | 嘉兴易声电子科技有限公司 | Digital hydrophone system |
| CN110174165A (en) * | 2019-07-01 | 2019-08-27 | 舟山美通信息技术有限责任公司 | A kind of digital hydrophone of replaceable sound head |
| CN112373658A (en) * | 2020-10-13 | 2021-02-19 | 汕头大学 | Vibration damper, hydrophone and underwater vehicle |
-
2017
- 2017-05-25 CN CN201720588201.7U patent/CN206804881U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132570A (en) * | 2017-05-25 | 2017-09-05 | 嘉兴易声电子科技有限公司 | Digital hydrophone system |
| CN110174165A (en) * | 2019-07-01 | 2019-08-27 | 舟山美通信息技术有限责任公司 | A kind of digital hydrophone of replaceable sound head |
| CN110174165B (en) * | 2019-07-01 | 2024-04-16 | 舟山美通信息技术有限责任公司 | Digital hydrophone with replaceable sound head |
| CN112373658A (en) * | 2020-10-13 | 2021-02-19 | 汕头大学 | Vibration damper, hydrophone and underwater vehicle |
| CN112373658B (en) * | 2020-10-13 | 2022-01-04 | 汕头大学 | Vibration damper, hydrophone and underwater vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Digital hydrophone system Effective date of registration: 20180713 Granted publication date: 20171226 Pledgee: Bank of Jiaxing science and technology branch of Limited by Share Ltd Pledgor: Jiaxing Yi sh Electronic Technology Co., Ltd. Registration number: 2018330000186 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190530 Granted publication date: 20171226 Pledgee: Bank of Jiaxing science and technology branch of Limited by Share Ltd Pledgor: Jiaxing Yi sh Electronic Technology Co., Ltd. Registration number: 2018330000186 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |