CN208477107U - A kind of multifrequency multibeam sounding system - Google Patents
A kind of multifrequency multibeam sounding system Download PDFInfo
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- CN208477107U CN208477107U CN201821297950.5U CN201821297950U CN208477107U CN 208477107 U CN208477107 U CN 208477107U CN 201821297950 U CN201821297950 U CN 201821297950U CN 208477107 U CN208477107 U CN 208477107U
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Abstract
A kind of multifrequency multibeam sounding system, comprising: control display module and sounding device；Sounding device includes waterproof shell, it is equipped in waterproof shell: control module, Multibeam synthesis module, power amplifier module and transducer array, control module receives the instruction for the wanted emission signal frequency that control display module is sent, the amplitude-modulated signal that Multibeam synthesis module generates wanted emission signal frequency is controlled according to the instruction, Multibeam synthesis module carries out phase shift to amplitude-modulated signal, dephased amplitude-modulated signal is launched after power amplifier module carries out power amplification by transducer array, and the multi-beam of different angle is formed；Echo-signal after reflection is received by transducer array.It can be realized " line-face " measurement, measurement efficiency is improved, while due also to system can provide frequency abundant, adapting to the measurement of different depth range, and different low frequency signals adapts to the thickness measure of different deposits, so as to the measurement to channel cleanout work and underwater geological conditions structure.
Description
Technical field
The utility model relates to fathoming technical fields, and in particular to a kind of multifrequency multibeam sounding system.
Background technique
The mankind will carry out the development and utilization of underwater (including ocean, rivers and lakes and reservoir etc.) it may first have to be to water
Depth, underwater topography landforms etc. are surveyed.Sounding instrument is the effective equipment for obtaining the depth of water and water-bed landform.By decades
Development, sounding system mainly has simple beam, multibeam echosounder and the single-frequency divided from frequency, double in the market at present
Frequency sounding instrument.
Single beam echosounding instrument is utilized to emission detection ultrasonic wave immediately below surveying vessel, by measurement transmitting with receive sound wave it
Between time difference sound the depth of the water.The essential defect of single beam echosounding instrument is, can only provide the water immediately below surveying vessel every time
Deep, in large area measurement, efficiency is very low.In addition, in order to avoid the influence that surveying vessel waves shaking, the requirement of single beam echosounding instrument
Than wider wave beam, this also leads to low measurement accuracy.Multibeam echosounding measures " point-line " of traditional simple beam, is extended to
" line-face ", to greatly improve measurement efficiency.Since multibeam echosounder uses in advance at multibeam technique, wave
Beam angle all relative narrowers, the measurement accuracy that can be greatly improved.
There are mainly two types of operating modes from working frequency point for presently used sounding instrument: single-frequency and multifrequency.MULTIFREQUENCY SOUNDING
Mode is mainly reflected in two aspects better than single-frequency mode: 1, the combination of low-and high-frequency can preferably adapt to fathom in precision
Requirement, when needing to measure deep water depth, select low frequency can expand measurement range；And it can be mentioned when using shallow water depth using high frequency
High measurement accuracy；2, in the application of navigation channel observation, deposit thickness is obtained by the different propagation characteristics of low-and high-frequency and instructs phase
Close work.In depth measurement, workable frequency is more, and applicability is better, more readily satisfies the measurement demand of varying environment.
The related multi-beam depth of water sounding system that can be found at present, either related patents or product, the mostly of use are
Fix the measurement method of certain frequency；And existing the mostly of dual frequency sounder use are simple beam working methods；Patent
2014104901793 may be implemented MULTIFREQUENCY SOUNDING, but it is also only simple beam work.Find out from finding, existing depth measurement is set
It is standby not accomplish to combine the adaptability of measurement efficiency and equipment, i.e., efficiently quickly bathymetric data can be surveyed
Amount, and the case where can be suitably used for different depth bounds and different type sedimentary.
Summary of the invention
The application provides a kind of multifrequency multibeam sounding system, including control display module and sounding device；
The sounding device includes waterproof shell, is equipped in the waterproof shell: control module, Multibeam synthesis mould
Block, power amplifier module and transducer array, wherein control module and the control display module are communicated by watertight cable and connected
It connects, receives the instruction for the wanted emission signal frequency that the control display module is sent, and more waves are controlled according to the instruction
Beam forms the corresponding amplitude-modulated signal that module generates wanted emission signal frequency, and the Multibeam synthesis module believes the amplitude modulation
Number Phaseshift controlling is carried out, dephased amplitude-modulated signal is sent out after the power amplifier module carries out power amplification by transducer array
It is shot out, to form the multi-beam acoustical signal of different angle；
And it is in amplitude-modulated signal that non-thread performance of the multi-beam acoustical signal in communication process due to medium, which demodulates frequency,
The low frequency signal that twice of envelope signal frequency, which reaches underwater reflection with the constant original amplitude modulated signal of frequency, raw
At echo-signal；The low frequency signal can also transmit at the bottom, reflect again when encountering another layer of medium interface, generate
Echo-signal；Echo-signal after reflection is received by transducer array.
In a kind of embodiment, the transducer array insertion is installed in the waterproof shell, and passes through sealing ring and institute
State waterproof shell sealed connection.
In a kind of embodiment, the transducer array is rectangle face battle array.
In a kind of embodiment, the transducer array includes transmitting transducer basic matrix and receives transducer array.
In a kind of embodiment, the control module is equipped with peripheral interface.
It further include high-frequency reception module and low frequency reception module, the control module is surveyed according to low frequency in a kind of embodiment
Amount control low frequency reception module receives echo-signal simultaneously forms corresponding wave beam, or, the control module is according to high frequency measurement control
High-frequency reception module receives echo-signal processed simultaneously forms corresponding wave beam.
In a kind of embodiment, further include the received echo-signal of transducer array is amplified, the signal of compensation deals
Processing module.
According to the multifrequency multibeam sounding system of above-described embodiment, it can be realized " line-face " measurement, improve measurement efficiency,
Simultaneously due also to system can provide frequency abundant, the measurement of different depth range, and different low frequency signal energy are adapted to
The thickness measure of different deposits is adapted to, so as to the measurement to channel cleanout work and underwater geological conditions structure.
Detailed description of the invention
Fig. 1 is multifrequency multibeam sounding system structural schematic diagram；
Fig. 2 is multifrequency multibeam sounding system schematic diagram；
Fig. 3 is the circuit diagram of power amplifier module.
Specific embodiment
The utility model is described in further detail below by specific embodiment combination attached drawing.
In the utility model embodiment, a kind of multifrequency multibeam sounding system, structural schematic diagram such as Fig. 1 institute are provided
Show, including control display module 1 and sounding device, wherein control display module 1 can be to have to send to sounding device and instruct
And the PC machine of the measurement result of display sounding device.Sounding device includes waterproof shell 2, and the top of waterproof shell 2 is welded with one
Installation of a ring flange for whole system is fixed, and is equipped in waterproof shell 2: control module 3, Multibeam synthesis module 4, function
Rate amplification module 5, transducer array 6 and signal processing module 7.
Specifically, the insertion of transducer array 6 is installed in waterproof shell 2, and connected by sealing ring and the sealing of waterproof shell 2
It connects, the transducer array 6 of this example is rectangle face battle array, specifically includes transmitting transducer basic matrix and receives transducer array, wherein
Transmitting transducer basic matrix is used to receive the multi-beam of different angle and the beam transmitting is gone out, and receives transducer array and receives
Echo-signal after reflection.
Control module 3 is the core processing part of sounding device, and e.g., control module 3 is preferably that the precision of ADUC7126 is micro-
Controller, control module 3 and control display module 1 are provided with control circle by watertight cable communication connection, control display module 1
Face and display interface control display module 1 by control interface and send instruction to control module 3 to determine the signal of being emitted
Frequency, control module 3 receive the corresponding tune of the wanted emission signal frequency of the control generation of Multibeam synthesis module 4 after the instruction
Width signal；Multibeam synthesis module 4 carries out Phaseshift controlling to the amplitude-modulated signal, and dephased signal passes through power amplifier module 5
After carrying out power amplification, is launched by transmitting transducer basic matrix, the launching beam with some angle directive property can be formed,
The deflection angle of directive property is determined by the phase difference between dephased adjacent pixel, to generate the multi-beam sound letter of different angle
Number.
The selection of the frequency for the signal of being emitted can according to the depth of measurement water body and to the measurement request of sedimentary and
It determines, and the angle of beam transmission can send order from control display module 1 as needed by user and determine, it can also be by control mould
Block 3 carries out the scanning transmitting an of covering of the fan in order.
The Multibeam synthesis module 4 of this example is preferably the dsp chip of BF706 model, and power amplifier module 5 is that D class is recommended
Amplifying circuit, circuit diagram as shown in figure 3, in Fig. 3, input signal from Q5+ the end Q5- input, by transducing after power amplification
Device transmitting, wherein TR6 is transmitting transducer primitive.
After transmitting transducer basic matrix goes out the beam transmitting of different angle, multi-beam acoustical signal in communication process by
It is twice of envelope signal frequency of low frequency signal in amplitude-modulated signal that the nonlinear interaction of medium, which can demodulate frequency, in water body,
The low frequency signal reaches underwater reflection with the constant original amplitude modulated signal of frequency, generates echo-signal；The low frequency signal can also be
The bottom transmits, and reflects again when encountering another layer of medium interface, generates echo-signal；Echo-signal quilt after reflection
Transducer array is received to receive；High frequency measurement is realized by receiving transmitting signal, can also be formed by receiving in communication process
Low frequency signal realizes low frequency measurement, by changing the envelope signal frequency of transmitting signal, can obtain the low of different frequency easily
Frequency signal realizes the multifrequency measurement of system.
Further, before measuring water-bed depth, it is also necessary to received to transducer array 6 by signal processing module 7
Echo-signal amplifies, compensation deals.Specifically, 7 pairs of reception wave beams of signal processing module mainly pass through harmonic wave generation
Circuit (NE555) realizes time gain adjustment, and realizes system gain compensation by programme-controlled gain amplifying circuit (AD603),
Then, then by control module 3 be acquired be transferred to control display module 1 carry out display measurement result.
Further, this example also added high-frequency reception module 8 and low frequency reception module 9, wherein high-frequency reception module 8 with
Low frequency reception module 9 is realized by FPGA module NI sbRIO-9651 and is completed；Transducer array to be received receives returning for reflection
After wave signal, control module 3 by judgement be carry out high frequency measurement or low frequency measurement determine using high-frequency reception module 8 or
9 receives echo-signal of low frequency reception module is to form corresponding wave beam, high-frequency reception module 8 and 9 received wave of low frequency reception module
Beam forming process is the treatment process that the signal received on each primitive passes through the weighting of FPGA module, delay, summation.Such as,
Control module 3 controls 9 receives echo-signal of low frequency reception module according to low frequency measurement and forms corresponding wave beam, and, control mould
Block 3 controls 8 receives echo-signal of high-frequency reception module according to high frequency measurement and forms corresponding wave beam, passes through high-frequency reception module
8 or the wave that receives of low frequency reception module 9 handled using amplification, compensation of signal processing module 7 etc., then by control module 3
Be acquired be transferred to control display module 1 carry out display obtain final measurement.
The control module 3 of this example is also installed with peripheral interface 10 in advance, for the communication with additional sensor, the additional sensing
Device can be GPS, tide gauge, attitude transducer etc. for subsidiary equipment, additional sensor by peripheral interface 10 with
Control module 3 is communicated, and control module 3 controls its work and its measurement data is returned to control module 3 to water-depth measurement knot
Fruit is supplemented or is corrected.
The working principle of the multifrequency multibeam sounding system of this example is: transducer array 6 immerses water body, and control module 3 connects
The firing order that control display module 1 is sent is received, control module 3 controls Multibeam synthesis module 4 according to the instruction and forms difference
The multi-beam acoustical signal of angle, then by power amplifier module 5 after multi-beam power amplification pass through transmitting transducer basic matrix will be more
Beam transmission is gone out, and realizes the multi-beam acoustical signal transmitting of different angle, the high-power amplitude modulation wave beam acoustical signal launched
During propagation, believe since the nonlinear interaction of medium can demodulate the low frequency that frequency is twice of amplitude-modulated signal envelope frequency
Number, using the bigger depth of water distance of low frequency signal progress and the measurement to sedimentary, passes through and change amplitude modulated envelope signal
Frequency, the low frequency signal that different frequency can be obtained realize multifrequency measurement, and control module 3, which starts, receives acquisition, at signal
The echo-signal that receives of reason 7 pairs of reception transducer arrays of module, which is amplified, compensate etc., to be passed through control module 3 after processing and acquires
It is transmitted to control display module 1 and carries out display measurement result.
Use above specific case is illustrated the utility model, is merely used to help understand the utility model, and
Not to limit the utility model.Think of for those skilled in the art of the present invention, according to the utility model
Think, several simple deductions, deformation or replacement can also be made.
Claims (7)
1. a kind of multifrequency multibeam sounding system characterized by comprising control display module and sounding device；
The sounding device includes waterproof shell, is equipped in the waterproof shell: control module, Multibeam synthesis module, function
Rate amplification module and transducer array, wherein control module and the control display module are connect by watertight cable communication connection
The instruction for the wanted emission signal frequency that the control display module is sent is received, and the Multibeam synthesis is controlled according to the instruction
Module generates the corresponding amplitude-modulated signal of wanted emission signal frequency, and the Multibeam synthesis module carries out the amplitude-modulated signal
Phaseshift controlling, dephased amplitude-modulated signal are launched after the power amplifier module carries out power amplification by transducer array
It goes, to form the multi-beam acoustical signal of different angle；
And it is the envelope in amplitude-modulated signal that non-thread performance of the multi-beam acoustical signal in communication process due to medium, which demodulates frequency,
Twice of signal frequency of low frequency signal, the low frequency signal reach underwater reflection with the constant original amplitude modulated signal of frequency, generate back
Wave signal；The low frequency signal can also transmit at the bottom, reflect again when encountering another layer of medium interface, generate echo
Signal；Echo-signal after reflection is received by transducer array.
2. multifrequency multibeam sounding system as described in claim 1, which is characterized in that the transducer array insertion is installed on
In the waterproof shell, and it is tightly connected by sealing ring and the waterproof shell.
3. multifrequency multibeam sounding system as claimed in claim 2, which is characterized in that the transducer array is rectangle face
Battle array.
4. multifrequency multibeam sounding system as claimed in claim 3, which is characterized in that the transducer array includes that transmitting is changed
It can device basic matrix and reception transducer array.
5. multifrequency multibeam sounding system as described in claim 1, which is characterized in that the control module connects equipped with periphery
Mouthful.
6. multifrequency multibeam sounding system as described in claim 1, which is characterized in that further include high-frequency reception module and low frequency
Receiving module, the control module control low frequency reception module receives echo-signal according to low frequency measurement and form corresponding wave
Beam, or, the control module controls high-frequency reception module receives echo-signal according to high frequency measurement and forms corresponding wave beam.
7. multifrequency multibeam sounding system as described in claim 1, which is characterized in that further include received to transducer array
Echo-signal amplifies, the signal processing module of compensation deals.
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| CN201821297950.5U CN208477107U (en) | 2018-08-13 | 2018-08-13 | A kind of multifrequency multibeam sounding system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945153A (en) * | 2021-02-08 | 2021-06-11 | 国家深海基地管理中心 | Cobalt-rich crust thickness measuring method based on multi-beam receiving technology |
| CN114932975A (en) * | 2022-04-08 | 2022-08-23 | 华创海洋科技(舟山)有限公司 | Positioning device and positioning method of cross-shaped array multi-beam depth sounder |
-
2018
- 2018-08-13 CN CN201821297950.5U patent/CN208477107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945153A (en) * | 2021-02-08 | 2021-06-11 | 国家深海基地管理中心 | Cobalt-rich crust thickness measuring method based on multi-beam receiving technology |
| CN112945153B (en) * | 2021-02-08 | 2022-07-29 | 国家深海基地管理中心 | Cobalt-rich crust thickness measuring method based on multi-beam receiving technology |
| CN114932975A (en) * | 2022-04-08 | 2022-08-23 | 华创海洋科技(舟山)有限公司 | Positioning device and positioning method of cross-shaped array multi-beam depth sounder |
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