CN105783885A - Acoustic Doppler current meter - Google Patents
Acoustic Doppler current meter Download PDFInfo
- Publication number
- CN105783885A CN105783885A CN201610143381.8A CN201610143381A CN105783885A CN 105783885 A CN105783885 A CN 105783885A CN 201610143381 A CN201610143381 A CN 201610143381A CN 105783885 A CN105783885 A CN 105783885A
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- Prior art keywords
- module
- signal
- current meter
- transducer
- acoustic doppler
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
- G01C13/002—Measuring the movement of open water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
- G01P5/241—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect
- G01P5/244—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by using reflection of acoustical waves, i.e. Doppler-effect involving pulsed waves
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to the technical field of ocean observation, in particular to an acoustic Doppler current meter which comprises a transducer, a measurement treatment module, a system control module, a pressure sensor, an attitude sensor, a temperature sensor, a power supply converting module, an alkaline battery pack and a shell. Based on the Doppler frequency shift principle, the acoustic Doppler current meter aims to resolve current velocities and flow directions by measuring the frequency shift variation of transmission pulse and echo pulse with the combination of instrument attitude data, ambient temperature and pressure data. The acoustic Doppler current meter provided by the invention is placed in a subsurface buoy system, is capable of observing ocean dynamic environment parameters and ocean current data for a long time and acquiring ocean environment parameters such as the temperature, the pressure, the current velocity and the flow direction of a placing sea area, has two working modes of direct reading and self-containing, and also has the characteristics of high current metering precision and flexible operation.
Description
Technical field
The present invention relates to ocean observation technology field, particularly relate to a kind of acoustic doppler current meter.
Background technology
Ocean current is the supplemental characteristic that research ocean dynamical environment is important, and marine resources development, environmental information safety guarantee, scientific research are had important function.The existing instrument based on acoustic flow measurement is divided into acoustic current meter and Doppler profile instrument.Acoustic current meter is divided into time difference type acoustic current meter, focusing acoustic current meter, Doppler type acoustic current meter according to measuring principle difference, acoustic doppler current meter have do not destroy flow field, survey instantaneous velocity, certainty of measurement is high, the advantage that can measure low speed ocean current.The ocean current of the certain point position in ocean can only be carried out long-term Continuous Observation by current meter, acoustic Doppler current profiler adopts tiltedly orthogonal (JANUS) structure of structuring the formation, with sound wave, the ocean current profile within the scope of hundreds of rice below instrument is taken remote measurement, thus measuring continuously for a long time and boat-carrying is walked aerial survey amount and provided a kind of effective way for realizing ocean current profile.
Existing acoustic doppler current meter generally only possesses direct-reading or from holding a kind of mode of operation, and working method underaction.In sum, a kind of acoustic doppler current meter having direct-reading and certainly holding two kinds of mode of operations, flow measurement precision height, flexible operation of offer is provided badly in ocean observation technology field.
Summary of the invention
The technical problem to be solved in the present invention is how to overcome the deficiencies in the prior art, it is provided that a kind of have direct-reading and from the acoustic doppler current meter holding two kinds of mode of operations, flow measurement precision height, flexible operation.
The present invention the technical scheme is that a kind of acoustic doppler current meter for achieving the above object, it is characterized in that, it includes transducer, system control module, measurement process module, pressure transducer, attitude transducer, temperature sensor, power transfer module, alkaline battery group and housing composition；
Further, described housing includes upper end cover, cylinder, bottom end cover, circuit board support, and described upper end cover adopts axial seal mode and longitudinal sealing mode with cylinder, bottom end cover and cylinder all simultaneously；
Further, described transducer, with lead metaniobate piezoelectric ceramics for element, adopts monolithic rounded longitudinal mode of oscillation technology, and the resonant frequency of transducer is 1MHz；
Further, described temperature sensor is digital sensor, is arranged on cylinder and obtains temperature value；Described pressure transducer is arranged in the circular trough of bottom end cover, and its press mold contacts with water, system control module provide power supply and adopt RS485 mode and system control module communication, obtains current pressure values and is transferred to system control module；
Further, described system control module is made up of CPU control core, energy supply control module, communication module, data memory module, complete order data mutual of host computer and measurement processing unit, system operational parameters sets, data storage, the task that power supply controls and pressure, attitude data process；
Further, described CPU control core adopts STM32 processor and is provided with SD card, storage apparatus can measure temperature, pressure, flow velocity, flow to data, can realize from molar formula, mutual, the system operational parameters that can complete host computer and the order data of measurement processing unit set, data storage, the task that power supply controls and pressure, attitude data process；
Further, described measurement process module includes signal transmitter module, signal receiver module, signal processing module, completes to launch the task of the generation of signal, transmitting and the reception process of reflected signal, signal processing, calculating ocean current flow velocity；
Further, described power transfer module respectively signal transmitter module, signal receiver module, signal processing module provide power supply, input voltage is 18-36V, to the output voltage of signal processing module be+5V, output voltage to signal receiver module be ± 5V, output voltage to signal transmitter module be+12V；
Further, the signal of telecommunication with certain repetition period, pulse width and frequency that signal processing module is produced by described signal transmitter module carries out power amplification by power amplifying part and is added on transducer by the signal of telecommunication, and described transducer converts corresponding acoustic signals to and launches；Described power amplifying part adopts D class power amplification circuit to realize, and generates the driving signal of power amplification under the control of described signal processing module；
Further, signal receiver module receives the echo-signal inputted by transducer, and after isolating transformer coupling, pre-amplifier, bandpass filtering, time-varying gain TVG amplification, postfilter, post amplifier, signal processing module is arrived in output；Described signal processing module is OMAP parts, can complete flow measurement and controls and signal processing algorithm, receive system control module and collect each sensor signal of input, the data of each sensor are resolved and merged, calculate ocean current flow velocity, flows to parameter.
The acoustic doppler current meter of the present invention is placed in submerged buoy system for cloth ocean current data is observed for a long time, acquisition lays the multiple ocean environment parameters such as marine site temperature, pressure, flow velocity, the flow direction, there is direct-reading and from holding two kinds of mode of operations, the ocean current data that can measure certain some position or each layer of certain section are set by parameter, and measurement cycle, measurement interval, odd-numbered day are measured the parameters such as time point distribution and arrange flexibly by the needs according to different user.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention；
Fig. 2 is overall structure schematic diagram of the present invention；
Fig. 3 is instrumental function relation schematic diagram.
Description of reference numerals: 1-transducer, 2-upper end cover, 3-cylinder, 4-signal receiver module, 5-metal shielding board, 6-power transfer module and signal transmitter module, 7-signal processing module, 8-system control module and attitude transducer, 9-alkaline battery group, 10-communicates watertight plug, 11-bottom end cover, 12-pressure transducer, 13-circuit board support, 14-transducer sounding window, 15-temperature sensor.
Detailed description of the invention
Embodiment 1:
A kind of acoustic doppler current meter, a kind of acoustic doppler current meter, it includes transducer 1, system control module 8, measurement process module, pressure transducer 12, attitude transducer 8, temperature sensor 15, power transfer module 6, alkaline battery group 9 and housing composition；Described housing includes upper end cover 2, cylinder 3, bottom end cover 11, circuit board support 13, and described upper end cover adopts axial seal mode and longitudinal sealing mode with cylinder, bottom end cover and cylinder all simultaneously, adopts two kinds of sealing means simultaneously, has better seal performance；Described upper end cover 2, cylinder 3, bottom end cover 11 all adopt 316 stainless steel materials to make, and circuit board support 13 adopts metallic aluminum material to make, and can alleviate instruments weight；It is additionally provided with metal shielding board 5.
Being embedded with 4 transducers inside upper end cover, there is the sounding window 14 of transducer on surface, and interior surface has 4 screw holes fixing with circuit board support 13, is fixed with cylinder 3 by 12 M5 screws.There is the mounting hole site of communication watertight plug installing hole 10, pressure transducer 12 on bottom end cover 11 surface, and interior surface has 4 screw holes fixing with set of cells 9.Fixed with cylinder 3 by 12 M5 screws.The communication watertight plug 10 installed adopts 8 cored structures, and wherein 4 cores are communication interface, it may be achieved remote real-time Communication for Power, makes instrument have direct-reading function, and wherein two cores are upper electrical interface, and remaining two cores stay extension to use.Cylinder is simple cylinder, except with upper and lower end cap fixing threaded hole except without other structures.Described circuit board support 13 is fixed with upper end cover.
Described transducer is with lead metaniobate piezoelectric ceramics for element, adopt monolithic rounded longitudinal mode of oscillation technology, the resonant frequency of transducer is 1MHz, the coordinate axes of the radiating surface normal form right angle coordinate of 4 transducers, the radiating surface diameter of each transducer is 2.8cm, its natural directivity is for being about 3.2 °, to meet the demand of precision flow velocity survey a large amount；Set of cells is saved E95 alkaline battery by 28 and forms, and adopts 2 and 14 string structures, fixes with bottom end cover, provides 21V power supply for instrument module.
Described temperature sensor is digital sensor, is arranged on cylinder and obtains temperature value；Described pressure transducer is arranged in the circular trough of bottom end cover, and its press mold contacts with water, system control module provide power supply and adopt RS485 mode and system control module communication, obtains current pressure values and is transferred to system control module；Described attitude transducer 8 is arranged on system control module 8, and controlled power supply by system control module 8, RS232 mode is adopted to communicate, the layout of attitude transducer need to be closed with instrument coordinates tying and be arranged, being specially attitude transducer is sky, northwest coordinate system, its north orientation points to the X-axis of instrument and overlaps, and attitude transducer adopts RS232 serial mode to communicate with the communication at instrument controlling center；
Described system control module is made up of CPU control core, energy supply control module, communication module, data memory module, complete order data mutual of host computer and measurement processing unit, system operational parameters sets, data storage, the task that power supply controls and pressure, attitude data process；Described CPU control core adopts STM32 processor and is provided with SD card, storage apparatus can measure temperature, pressure, flow velocity, flow to data, can realize from molar formula, mutual, the system operational parameters that can complete host computer and the order data of measurement processing unit set, data storage, the task that power supply controls and pressure, attitude data process；Described measurement process module includes signal transmitter module 6, signal receiver module 5, signal processing module 7, completes to launch the task of the generation of signal, transmitting and the reception process of reflected signal, signal processing, calculating ocean current flow velocity；Described power transfer module respectively signal transmitter module, signal receiver module, signal processing module provide power supply, input voltage is 18-36V, to the output voltage of signal processing module be+5V, output voltage to signal receiver module be ± 5V, output voltage to signal transmitter module be+12V；The signal of telecommunication with certain repetition period, pulse width and frequency that signal processing module is produced by described signal transmitter module carries out power amplification by power amplifying part and is added on transducer by the signal of telecommunication, and described transducer converts corresponding acoustic signals to and launches；Described power amplifying part adopts D class power amplification circuit to realize, and generates the driving signal needed for the transducer of power amplification under the control of described signal processing module；FPGA portion running status is controlled by four control lines of 7-signal processing module, piece firing line (TRIG), clock line (CLK), an I2C bus are connected with FPGA core core, four control line control signal forms, firing line controls the time started, and clock line drives the reference clock of signal for providing FPGA to generate transmitter.
Signal receiver module receives the echo-signal inputted by transducer, and after isolating transformer coupling, pre-amplifier, bandpass filtering, time-varying gain TVG amplification, postfilter, post amplifier, signal processing module is arrived in output；Described signal processing module is OMAP (having 1 AMR9 kernel and 1 DSP core) parts, flow measurement can be completed control and signal processing algorithm, receive system control module and collect each sensor signal of input, the data of each sensor are resolved and merged, calculate ocean current flow velocity, flow to parameter.
Above-described embodiment, simply to illustrate that the technology of the present invention is conceived and feature, its objective is to be in that to allow one of ordinary skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.The change of every equivalence done by the essence of present invention or modification, all should be encompassed in protection scope of the present invention.
Claims (10)
1. an acoustic doppler current meter, it is characterised in that it includes transducer, system control module, measurement process module, pressure transducer, attitude transducer, temperature sensor, power transfer module, alkaline battery group and housing composition.
2. a kind of acoustic doppler current meter as claimed in claim 1, it is characterized in that, described housing includes upper end cover, cylinder, bottom end cover, circuit board support, and described upper end cover adopts axial seal mode and longitudinal sealing mode with cylinder, bottom end cover and cylinder all simultaneously.
3. a kind of acoustic doppler current meter as claimed in claim 2, it is characterised in that described transducer, with lead metaniobate piezoelectric ceramics for element, adopts monolithic rounded longitudinal mode of oscillation technology, and the resonant frequency of transducer is 1MHz.
4. a kind of acoustic doppler current meter as claimed in claim 1, it is characterised in that described temperature sensor is digital sensor, is arranged on cylinder and obtains temperature value；Described pressure transducer is arranged in the circular trough of bottom end cover, and its press mold contacts with water, system control module provide power supply and adopt RS485 mode and system control module communication, obtains current pressure values and is transferred to system control module.
5. a kind of acoustic doppler current meter as claimed in claim 1, it is characterized in that, described system control module is made up of CPU control core, energy supply control module, communication module, data memory module, complete order data mutual of host computer and measurement processing unit, system operational parameters sets, data storage, the task that power supply controls and pressure, attitude data process.
6. a kind of acoustic doppler current meter as claimed in claim 5, it is characterized in that, described CPU control core adopts STM32 processor and is provided with SD card, storage apparatus can measure temperature, pressure, flow velocity, flow to data, can realize from molar formula, mutual, the system operational parameters that can complete host computer and the order data of measurement processing unit set, data storage, the task that power supply controls and pressure, attitude data process.
7. a kind of acoustic doppler current meter as claimed in claim 1, it is characterized in that, described measurement process module includes signal transmitter module, signal receiver module, signal processing module, completes to launch the task of the generation of signal, transmitting and the reception process of reflected signal, signal processing, calculating ocean current flow velocity.
8. a kind of acoustic doppler current meter as claimed in claim 7, it is characterized in that, described power transfer module respectively signal transmitter module, signal receiver module, signal processing module provide power supply, input voltage is 18-36V, to the output voltage of signal processing module be+5V, output voltage to signal receiver module be ± 5V, output voltage to signal transmitter module be+12V.
9. a kind of acoustic doppler current meter as claimed in claim 7, it is characterized in that, the signal of telecommunication with certain repetition period, pulse width and frequency that signal processing module is produced by described signal transmitter module carries out power amplification by power amplifying part and is added on transducer by the signal of telecommunication, and described transducer converts corresponding acoustic signals to and launches；Described power amplifying part adopts D class power amplification circuit to realize, and generates the driving signal of power amplification under the control of described signal processing module.
10. a kind of acoustic doppler current meter as claimed in claim 1, it is characterized in that, signal receiver module receives the echo-signal inputted by transducer, and after isolating transformer coupling, pre-amplifier, bandpass filtering, time-varying gain TVG amplification, postfilter, post amplifier, signal processing module is arrived in output；Described signal processing module is OMAP parts, can complete flow measurement and controls and signal processing algorithm, receive system control module and collect each sensor signal of input, the data of each sensor are resolved and merged, calculate ocean current flow velocity, flows to parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143381.8A CN105783885A (en) | 2016-03-14 | 2016-03-14 | Acoustic Doppler current meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610143381.8A CN105783885A (en) | 2016-03-14 | 2016-03-14 | Acoustic Doppler current meter |
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| CN105783885A true CN105783885A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610143381.8A Pending CN105783885A (en) | 2016-03-14 | 2016-03-14 | Acoustic Doppler current meter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985970A (en) * | 2017-04-01 | 2017-07-28 | 中国水产科学研究院南海水产研究所 | A kind of doppler velocimeter fixed mount measured for ocean flow velocity |
| CN107764248A (en) * | 2017-12-05 | 2018-03-06 | 山东省科学院海洋仪器仪表研究所 | A kind of acoustic wave tide measuring instrument and measuring method |
| CN108267126A (en) * | 2018-01-22 | 2018-07-10 | 中国海洋大学 | Wave is to the observation system and method for bottom sediment settling flux amount in deep-sea |
| CN109374922A (en) * | 2018-11-30 | 2019-02-22 | 中国海洋大学 | One kind being used for the vertical stable flow velocity profile survey buoy of wave glider pull-type |
| CN111458535A (en) * | 2020-04-14 | 2020-07-28 | 武汉新烽光电股份有限公司 | Flow velocity measuring device and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985970A (en) * | 2017-04-01 | 2017-07-28 | 中国水产科学研究院南海水产研究所 | A kind of doppler velocimeter fixed mount measured for ocean flow velocity |
| CN107764248A (en) * | 2017-12-05 | 2018-03-06 | 山东省科学院海洋仪器仪表研究所 | A kind of acoustic wave tide measuring instrument and measuring method |
| CN108267126A (en) * | 2018-01-22 | 2018-07-10 | 中国海洋大学 | Wave is to the observation system and method for bottom sediment settling flux amount in deep-sea |
| CN109374922A (en) * | 2018-11-30 | 2019-02-22 | 中国海洋大学 | One kind being used for the vertical stable flow velocity profile survey buoy of wave glider pull-type |
| CN111458535A (en) * | 2020-04-14 | 2020-07-28 | 武汉新烽光电股份有限公司 | Flow velocity measuring device and system |
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Application publication date: 20160720 |