CN206095416U - Multichannel hydrophone sensitivity detection device - Google Patents
Multichannel hydrophone sensitivity detection device Download PDFInfo
- Publication number
- CN206095416U CN206095416U CN201621129916.8U CN201621129916U CN206095416U CN 206095416 U CN206095416 U CN 206095416U CN 201621129916 U CN201621129916 U CN 201621129916U CN 206095416 U CN206095416 U CN 206095416U
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- Prior art keywords
- hydrophone
- sound
- signal generator
- multichannel
- signal
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Abstract
The utility model relates to a hydrophone technical field especially relates to a multichannel hydrophone sensitivity detection device, refer to hydrophone, multi -channel data acquisition card, sound case and PC including signal generator, power amplifier, speaker, standard, speaker, data collection card install in sound roof portion, the hydrophone is referred to to the standard and the hydrophone that awaits measuring hangs in sound case intermediate position through the shock attenuation nylon rope, signal generator passes through power amplifier with the speaker is connected, and signal generator produces acoustic signals by PC control signal generator, the multi -channel data acquisition card is used for the sound sound signal who gathers the sound sound signal of standard reference hydrophone and await measuring the hydrophone and sends sound sound signal to PC. This detecting system has realized the data acquisition and processing of no. 24 hydrophone signals simultaneously, the one way test system at present commonly used of comparing, very big improvement efficiency of software testing.
Description
Technical field
The utility model is related to hydrophone technical field, more particularly to a kind of multichannel hydrophone sensitivity detector.
Background technology
Hydrophone is distributed in oil-filled cable according to certain in ocean seismic exploration haulage cable, is constituted distributed data and is adopted
Collecting system.The quantity of hydrophone reaches tens thousand of in every towing cable of marine seismic survey system, and hydrophone is used as marine seismic prospectiong
The core devices of information gathering in system, at the quality and data of the determined geological data of uniformity of its voltage sensibility
The accuracy of reason result.Therefore, the uniformity for being placed on hydrophone voltage sensibility in towing cable how is detected, is that offshore earthquake is surveyed
The difficult problem faced in the manufacture of spy system towing cable and maintenance process.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, and provides a kind of multichannel hydrophone sensitivity inspection
Device is surveyed, the uniformity of hydrophone voltage sensibility can be detected.
The utility model for achieving the above object, is employed the following technical solutions：
A kind of multichannel hydrophone sensitivity detector, it is characterised in that：Including signal generator, power amplifier,
Loudspeaker, canonical reference hydrophone, multi-Channel Data Acquisition Card, sound case and PC；The loudspeaker, data collecting card are installed on
Sound box top, the canonical reference hydrophone and hydrophone to be measured hang on sound case centre position, institute by damping nylon rope
State signal generator to be connected with the loudspeaker by the power amplifier, signal generator is by PC control signal generator
Produce acoustic signals；The multi-Channel Data Acquisition Card is used to gather the voice signal and hydrophone to be measured of canonical reference hydrophone
Voice signal and send voice signal to PC.
Preferably, the multi-Channel Data Acquisition Card adopts the EP4CE22 type fpga chips of ALTERA companies production as master
Control chip, while controlling 24 road ADS1282 chips, ADS1282 chips are connected with EP4CE22 type fpga chips by SPI interface.
Preferably, the canonical reference hydrophone and hydrophone to be measured pass through respectively resistance, electric capacity and connection with clamp diode groups
Into filter protective circuit be connected with ADS1282 chips.
Preferably, the sound case is wooden closure space, and volume is more than 1 cubic metre, and the inwall of sound case is paved with sound suction
Receive material.
Preferably, the signal generator is connected by RS232 buses with PC.
The beneficial effects of the utility model are:Relative to prior art, 1, multichannel hydrophone voltage sensibility detecting system
Certainty of measurement be 0.1dB, meet production in the conforming requirement of hydrophone sensitivity.
2nd, this detecting system realizes the collection of 24 road hydrophone signals and processes simultaneously, compares relatively conventional at present single channel
Test system, greatly improves testing efficiency.
Description of the drawings
Fig. 1 is system block diagram of the present utility model；
Fig. 2 is hydrophone and ADS1282 interface circuit figure in the utility model；
Fig. 3 is ADS1282 chips and fpga chip interface diagram in the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and preferred embodiment describes specific embodiment of the present utility model in detail.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New restriction.
See figures.1.and.2, a kind of multichannel hydrophone sensitivity detector, including signal generator, power amplification
Device, loudspeaker, canonical reference hydrophone, multi-Channel Data Acquisition Card, sound case and PC；The sound case is that wooden closure is empty
Between, volume is more than 1 cubic metre, and the inwall of sound case is paved with sound absorptive material.The loudspeaker, data collecting card are installed on sound case
Top, the canonical reference hydrophone and hydrophone to be measured hang on sound case centre position, the letter by damping nylon rope
Number generator is connected by the power amplifier with the loudspeaker, and signal generator is produced by PC control signal generator
Acoustic signals；The multi-Channel Data Acquisition Card is used to gather the voice signal of canonical reference hydrophone and the sound of hydrophone to be measured
Message number simultaneously sends voice signal to PC.Voice signal acts on 1 road canonical reference hydrophone and 23 tunnels hydrophone to be measured,
24 voltage signal is produced, voltage is transmitted to PC and machine after being gathered by data collecting card by network interface.PC is built with special number
According to record and analysis software, for amplitude and frequency that analyze data capture card collects voltage signal, according to analysis result, inspection
Survey the uniformity of hydrophone sensitivity.
As shown in figure 3, the synchronous acquisition in order to realize 24 road ADS1282, the multi-Channel Data Acquisition Card adopts ALTERA
Company production EP4CE22 type fpga chips as main control chip, while control 24 road ADS1282 chips, ADS1282 chips with
EP4CE22 types fpga chip is connected by SPI interface.The road SPI interface of FPGA indoor designs 24, each interface connects one
ADS1282.In order to ensure the synchronism of data acquisition, 24 ADS1282 are using same group of CLK signal, SCLK signal, DIN letters
Number and reset signal, each ADS1282 has a DOUT signal output to FPGA.24 SPI modules read ADS1282's simultaneously
Data, are then deposited into SRAM module, and the data in SRAM module are carried out parallel serial conversion by data transmission blocks, are sent out by network interface
Give PC.PC produces the sine wave signal of certain frequency by RS232 interface control signals generator, and the signal is through work(
After rate amplifier amplifies, output to loudspeaker produces the voice signal of certain frequency.
As shown in Fig. 2 the canonical reference hydrophone and hydrophone to be measured pass through respectively resistance, electric capacity and clamp diode
The filter protective circuit of composition is connected with ADS1282 chips.Hydrophone output signal is by front-end filtering network, protection network
The analog input end of ADS1282 is sent into, access way adopts differential mode mode.Hydrophone output signal by front-end filtering network,
Protection network sends into the analog input end of ADS1282, and access way adopts differential mode mode.Hydrophone output signal passes through R1, R2
It is to keep good common-mode rejection properties and the filter network that C2, C3, C4 are constituted removes High-frequency Interference, it is desirable to R1, R2 matching essence
Degree reaches 0.1%.Electric capacity C4 is in parallel with C2, C3 can effectively to be reduced because two input C2, C3 mismatch the common-mode error for causing,
When C4 is bigger than C2 10 times, 20 times can will be reduced because C2, C3 mismatch the common-mode error for causing.Clamp diode is used to protect
The input signal momentary overload of ADS1282, the clamp when incoming signal level may exceed the rated value of internal ESD diode
Diode can provide protection to input.
The certainty of measurement of multichannel hydrophone voltage sensibility detecting system is 0.1dB, meets sensitive to hydrophone in production
Spend conforming requirement.This detecting system realizes the collection of 24 road hydrophone signals and processes simultaneously, compares and commonly uses more at present
Single-path testing system, greatly improve testing efficiency.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of multichannel hydrophone sensitivity detector, it is characterised in that：Including signal generator, power amplifier, raise
Sound device, canonical reference hydrophone, multi-Channel Data Acquisition Card, sound case and PC；The loudspeaker, data collecting card are installed on sound
Box top, the canonical reference hydrophone and hydrophone to be measured hang on sound case centre position by damping nylon rope, described
Signal generator is connected by the power amplifier with the loudspeaker, and signal generator is produced by PC control signal generator
Raw acoustic signals；The multi-Channel Data Acquisition Card is used to gather the voice signal and hydrophone to be measured of canonical reference hydrophone
Voice signal simultaneously sends voice signal to PC.
2. a kind of multichannel hydrophone sensitivity detector according to claim 1, it is characterised in that：Many ways
According to capture card using the EP4CE22 type fpga chips of ALTERA companies production as main control chip, while controlling 24 road ADS1282
Chip, ADS1282 chips are connected with EP4CE22 types fpga chip by SP I interfaces.
3. a kind of multichannel hydrophone sensitivity detector according to claim 1, it is characterised in that：The standard ginseng
Hydrophone and hydrophone to be measured are examined respectively by the filter protective circuit and ADS1282 of resistance, electric capacity and clamp diode composition
Chip is connected.
4. a kind of multichannel hydrophone sensitivity detector according to claim 1, it is characterised in that：The sound case is
Wooden closure space, volume is more than 1 cubic metre, and the inwall of sound case is paved with sound absorptive material.
5. a kind of multichannel hydrophone sensitivity detector according to claim 1, it is characterised in that：The signal is sent out
Raw device is connected by RS232 buses with PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129916.8U CN206095416U (en) | 2016-10-17 | 2016-10-17 | Multichannel hydrophone sensitivity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621129916.8U CN206095416U (en) | 2016-10-17 | 2016-10-17 | Multichannel hydrophone sensitivity detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206095416U true CN206095416U (en) | 2017-04-12 |
Family
ID=59975270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621129916.8U Expired - Fee Related CN206095416U (en) | 2016-10-17 | 2016-10-17 | Multichannel hydrophone sensitivity detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206095416U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| CN109443515A (en) * | 2018-09-13 | 2019-03-08 | 中国船舶重工集团公司第七〇五研究所 | Test macro and method in a kind of small size hydrophone sensitivity air |
-
2016
- 2016-10-17 CN CN201621129916.8U patent/CN206095416U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168683A (en) * | 2017-12-22 | 2018-06-15 | 中国船舶重工集团公司第七〇五研究所 | A kind of pressure-bearing type vector hydrophone measuring device |
| CN109443515A (en) * | 2018-09-13 | 2019-03-08 | 中国船舶重工集团公司第七〇五研究所 | Test macro and method in a kind of small size hydrophone sensitivity air |
| CN109443515B (en) * | 2018-09-13 | 2021-05-14 | 中国船舶重工集团公司第七一五研究所 | System and method for testing sensitivity of small-size hydrophone in air |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20191017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |