CN105547515B - A kind of self-floating bottom-water temperature detection system - Google Patents
A kind of self-floating bottom-water temperature detection system Download PDFInfo
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- CN105547515B CN105547515B CN201610102475.0A CN201610102475A CN105547515B CN 105547515 B CN105547515 B CN 105547515B CN 201610102475 A CN201610102475 A CN 201610102475A CN 105547515 B CN105547515 B CN 105547515B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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Abstract
The invention discloses a kind of self-floating bottom-water temperature detection system, it includes seabed signal acquisition base station and thermoprobe；Wherein thermoprobe can be used for multiple times and fully be contacted with seawater, and temperature detecting unit is placed inside thermoprobe, and temperature detecting unit combination is convenient, flexible, and data signal output can be effectively improved the quality of data；Seabed signal acquisition base station ensure that the instrument rate of recovery, reduce ocean temperature detection risk.Self-floating bottom-water temperature detection system both can also detect bottom-water temperature in neritic area in abysmal area, stay extra large time length to be conducive to long-term bottom-water temperature to detect.
Description
Technical field
The invention belongs to geophysical survey field, and in particular to a kind of bottom-water temperature for geophysical survey is detected
System.
Background technology
Bottom-water temperature detection is the detection knot of the important means, the especially thermograde of heat flux regions of geophysical method
Fruit can directly reflect the Heat transmission process of earth interior, help us to carry out geodynamics, thermal drivers structure in earth interior
The research of frame evolutionary process, assessment foundation is provided for the detection of the mineral resources such as sea-bottom oil-gas.
Current bottom-water temperature detection is main to be realized by oil drilling thermometric and the detection of heat flow of ocean floor meter.Wherein petroleum drilling
Well thermometric is main to be carried out in petroleum region and neritic area, and operating condition limitation is more, costly and efficiency is low；With oil drilling thermometric phase
It is more simple to operate than heat flow of ocean floor meter, more efficient, it is main in the world that bottom-water temperature detection is carried out using heat flow of ocean floor meter.During operation
Heat flow of ocean floor meter is placed into water by wirerope, is inserted under gravity in bottom sediment, is treated the probe of heat flow of ocean floor meter
Reached with bottom sediment contact position temperature after stable state and bottom-water temperature is measured by internal temperature-sensitive element, led to after being measured
Cross wirerope recovery.Current heat flow of ocean floor meter mainly includes three types：Bullard types, Ewing types and Lister types.Three is total to
All it is to discharge to reclaim by wirerope with feature, temperature-sensitive element inwall or steel lance outer wall of the carry in reinforcing pipe at certain intervals
Diverse location, temperature-sensitive element is connected to recording unit simultaneously, and recording unit is placed on independent pressure resistant vessel interior sealing.The heat flow of ocean floor
Meter can more conveniently measure the bottom-water temperature within km, but be lifted at double as sea water advanced increase detects difficulty, efficiency
Reduce and risk is greatly increased.The probe of heat flow of ocean floor meter can cause frictional heat during insertion deposit, specifically
Hot bad grasp of steady time, while the bottom-water temperature of some specified sea areas is influenceed to present with time acute variation by earth interior
Situation is, it is necessary to which heat flow of ocean floor meter stays sea to obtain accurate temperature information for a long time.In addition, heat flow of ocean floor meter is in the course of the work,
Surveying vessel is affected by surge to drift about, and heat flow of ocean floor meter may become in the position in seabed in the presence of wirerope
Change, even result in the damage of heat flow of ocean floor meter and cause operation to fail, this all proposes new problem to the application of heat flow of ocean floor meter.
In view of the topical type of oil drilling thermometric and heat flow of ocean floor meter in bottom-water temperature detection process, uses for reference current seabed
The dispensing recovery technology of seismic detector maturation, it is necessary to which a kind of recovery of research and development is convenient, stay extra large time length, small volume to be easy to development large quantities of
Measure the self-floating bottom-water temperature detection system of bottom-water temperature detection.
The content of the invention
In view of the shortcomings of the prior art there is provided a kind of bottom-water temperature detection system, its is simple in construction, self-floating is reclaimed, suitable
Long-term bottom-water temperature detection is closed, to meet the demand of marine geophysical survey.
To reach above-mentioned purpose, the technical solution of invention is as follows：
A kind of self-floating bottom-water temperature detection system, including seabed signal acquisition base station 24 and thermoprobe 4.Wherein seabed
Signal acquisition base station 24 includes uncoupling rigging 1, instrument room 2 and heavy coupling frame 5；Instrument room 2 includes the internal He of single glass cabin ball 10
Outer protection shell 13；Glass cabin ball 10 leads to provided with a four core watertight sockets 6, seabed signal acquisition base station 24 with thermoprobe 4
Wire 7 is crossed to connect.Two parts about 13 points of glass cabin ball outer protection shell, both are fixed by multiple bolts, and thermoprobe 4 leads to
Cross and be bolted to the bottom of outer protection shell 13；Uncoupling rigging 1 is installed on the top of outer protection shell 13, and instrument room 2 is overall to be positioned over
On heavy coupling frame 5；Heavy coupling frame 5 is square frame shape, and middle part is provided with rigid metal annulus, and square frame is justified by four girder steels and rigid metal
Ring is connected, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 is passed through in the middle of metal ring 18.
In self-floating bottom-water temperature detection system, thermoprobe 4 is vertically fixed in outside containment vessel 13 by bolt
Bottom, glass cabin ball 10 is respectively provided with four core watertight sockets with the tail end of thermoprobe 4, and both are connected by RS485 buses 7, bus
It is divided into power line, ground wire, data wire A and data wire B.The main body of thermoprobe 4 is cylindrical, long 1~1.5 meter, 3 centimetres of diameter,
0.5 centimetre of wall thickness, front end is in coniform, and thermoprobe tail end is provided with four core watertight sockets；The main part of thermoprobe 4 is provided with more
Individual circular hole 23, seawater can be in the inside and outside free-flowing of thermoprobe 4.
Further, multiple temperature detecting units 21 are placed in the inside of thermoprobe 4, and temperature detecting unit 21 passes through RS485
Bus 20 is connected and lowering is inside thermoprobe 4.Place integrated negative tempperature coefficient thermistor in the inside of temperature detecting unit 21
Temperature collection circuit 22.Temperature detecting unit 21 is cylindrical, integral sealing, and column top and bottom respectively have four core watertights to insert
Seat, can individually connect the connection seabed signal acquisition base station 24 after also multiple concatenations that works of seabed signal acquisition base station 24 and work,
The detection of bottom-water temperature gradient can be carried out after concatenation.When detecting bottom-water temperature gradient, appropriate length RS485 can be selected according to demand
Bus, seabed signal acquisition base station 24 carries out communication sum by RS485 buses and thermoprobe internal temperature probe unit 21
According to transmission.
, can directly output digit signals, numeral in addition, temperature detecting unit 21 is internally integrated complete temperature collection circuit 22
Signal is by the way that RS485 bus transfers are into seabed signal acquisition base station 24 and store, and seabed signal acquisition base station 24 passes through RS485
The working time of bus marco temperature detecting unit 21 simultaneously determines the running parameters such as sample rate.
Using technical scheme, it can have the advantages that：
1st, the present invention between seabed signal acquisition base station and thermoprobe only with the RS485 bus phases for including four wires
Even, underwater electrical connector crossing cabin difficulty is reduced.Using single glass cabin ball can simultaneously with thermoprobe inside more than 10
Temperature detecting unit communicates, and solves the problem of bottom-water temperature detection system miniaturization.
2nd, the temperature detecting unit internal temperature Acquisition Circuit that the present invention is provided is integrated with negative tempperature coefficient thermistor, bears
Temperature coefficient thermistor is higher in interval (0 DEG C -10 DEG C) the interior remolding sensitivity RTD of bottom-water temperature, bottom-water temperature can be achieved high
Precision is detected.Temperature collection circuit realizes the numeral output of sample point temperature, it is to avoid temperature-sensitive in traditional heat-flow meter probe
The long interference caused of transmission range between resistance and data board, especially when detecting bottom-water temperature gradient, due to needing to temperature
Multidraw is spent, analog signal transmission distance can be further resulted in and lengthened at double, the present invention, which can be effectively improved, obtains data
Quality.
3rd, the self-floating bottom-water temperature detection system that the present invention is provided improves the instrument rate of recovery, reduces ocean temperature spy
Risk is surveyed, both bottom-water temperature can also be detected in abysmal area in neritic area.The extra large time is stayed compared to conventional subsea heat-flow meter more
It is long, be conducive to long-term bottom-water temperature data acquisition；Small volume, it is easy to operate be conducive to carrying out the detection of high-volume bottom-water temperature make
Industry.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of the self-floating bottom-water temperature detection system according to the present invention；
Fig. 2 is the self-floating bottom-water temperature detection system cross-sectional view according to the present invention；
Fig. 3 is the heavy coupling frame schematic diagram of self-floating bottom-water temperature detection system according to the present invention；
Fig. 4 is thermoprobe cross-sectional view in the self-floating bottom-water temperature detection system according to the present invention；
Fig. 5 is temperature collection circuit structure in the self-floating bottom-water temperature detection system temperature detecting unit according to the present invention
Block diagram；
Fig. 6 is signal in the self-floating bottom-water temperature detection system temperature detecting unit temperature collection circuit according to the present invention
Amplifier section circuit diagram；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.Obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of self-floating bottom-water temperature detection system, including seabed signal acquisition base station 24 and thermoprobe 4.Wherein seabed
Signal acquisition base station includes uncoupling rigging 1, instrument room 2 and heavy coupling frame 5；Instrument room 2 includes internal single glass cabin ball 10 and outer
Portion's containment vessel 13；Glass cabin ball 10 is provided with a four core watertight sockets 6, and seabed signal acquisition base station 24 passes through with thermoprobe 4
Wire 7 is connected.Two parts about 13 points of glass cabin ball outer protection shell, both are fixed by multiple bolts, and thermoprobe 4 passes through
It is bolted to the bottom of outer protection shell 13；Uncoupling rigging 1 is installed on the top of outer protection shell 13, and it is heavy that the entirety of instrument room 2 is positioned over
On coupling frame 5；Heavy coupling frame 5 is square frame shape, and middle part is provided with rigid metal annulus, and square frame passes through four girder steels and rigid metal annulus
Connection, hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 is passed through in the middle of metal ring 18.
Wherein, seabed signal acquisition base station 24 has been internally integrated direction sensor 15 and attitude transducer 16, for obtaining
Tilt condition behind the insertion of thermoprobe 4 seabed.Preferably, the present invention uses HMR3200 type direction sensors, directional precision
1 °, 0.1 ° of resolution ratio.Thermoprobe 4 is bolted on the bottom of outer protection shell 13, glass cabin ball 10 and the tail of thermoprobe 4
End is respectively provided with four core watertight sockets, is connected by RS485 buses, bus is divided into power line, ground wire, data wire A and data wire B.
Bus power source voltage is 5.2V, to ensure to add mu balanced circuit in temperature detecting unit power good, temperature detecting unit 21.
The main body of thermoprobe 4 in the present invention is cylindrical, long 1~1.5 meter, 3 centimetres of diameter, 0.5 centimetre of wall thickness, front end
In coniform, tail end is provided with four core watertight sockets 19；Thermoprobe main part is provided with multiple circular holes 23, and seawater can be visited in thermometric
Pin 4 is inside and outside to be flowed freely；Multiple temperature detecting units 21 are placed in the inside of thermoprobe 4, and temperature detecting unit 21 is total by RS485
Line 20 connects lowering inside thermoprobe 4.Place the temperature of integrated negative tempperature coefficient thermistor in the inside of temperature detecting unit 21
Acquisition Circuit 22 is spent, the negative tempperature coefficient thermistor used change in resistance scope at 0 DEG C to 10 DEG C is about 15.4 kilo-ohms
To 9.7 kilo-ohms, sensitivity is higher compared with RTD, is easy to the detected with high accuracy of bottom-water temperature.In order to save temperature sensing list
The power consumption of member 21 is detected in favor of long-time bottom-water temperature, and LPC812 microcontrollers, only 16 are employed in temperature collection circuit
Pin, pin function can realize that function switches.Pin 1 is assigned as the choosing of AD pieces in the present invention, and pin 2 is assigned as AD clocks letter
Number, pin 7 is assigned as AD input signals, and pin 8 is assigned as AD output signals, and pin 14 is assigned as RS485 bus-in singals,
Pin 15 is assigned as MAX485 chip selection signals, and pin 16 is assigned as RS485 bus-out signals.It is (general that LPC812 carries UART
Asynchronous receiving-transmitting transmitter), and comprising address register, address can be separately provided.The temperature number that temperature detecting unit 21 is obtained
Sent according to after amplification, analog-to-digital conversion by LPC812 by UART, being modulated into RS485 mode bus by MAX485 chips enters
Row transmission.Temperature detecting unit 21 is cylindrical, integral sealing, and column top and bottom are respectively provided with four core watertight sockets, can be single
Solely connection seabed signal acquisition base station 24 works and can also worked connection seabed signal acquisition base station 24 after multiple concatenations, can after concatenation
Carry out the detection of bottom-water temperature gradient.When detecting bottom-water temperature gradient, appropriate length RS485 buses can be selected according to demand, sea
Bottom signal acquisition base station 24 is communicated and data transfer by RS485 buses with temperature detecting unit 21.Specific works pattern
For the address of temperature detecting unit 21 for needing to obtain data is sent to institute by seabed signal acquisition base station 24 by RS485 buses
There is temperature detecting unit 21, when temperature detecting unit 21 judges that address contained by acquisition information is identical with oneself, internal microcontroller
LPC812 control temperature collection circuits 22 are worked, and the temperature data collected is transferred into seabed signal acquisition base station 24, if
Address is not inconsistent with oneself, is operated without any to save power consumption.
Further, temperature detecting unit 21 has been internally integrated complete temperature collection circuit 22, can directly export numeral
Signal, signal is by the way that RS485 bus transfers are into seabed signal acquisition base station 24 and store, and seabed signal acquisition base station 24 passes through
The running parameter such as the working time of RS485 bus marcos temperature detecting unit 21 and determination sample rate.
Specifically, further detailed description is given below in conjunction with the accompanying drawings.
As shown in Figure 1, it is self-floating bottom-water temperature detection system three-dimensional structure diagram, including seabed signal acquisition base station 24
With thermoprobe 4.Seabed signal acquisition base station 24 includes uncoupling rigging 1, instrument room 2 and heavy coupling frame 5；Instrument room 2 includes inside
Single glass cabin ball 10 and outer protection shell 13；Instrument room 2 is positioned on heavy coupling frame 5, and uncoupling rigging 1 is positioned over instrument room 2
Top, four one end of wirerope 3 are fixed at the fixed interface of uncoupling rigging 1, and the other end is locked using nut 8 at heavy coupling frame 5, will
Instrument room 2 is fixed with heavy coupling frame 5.Thermoprobe 4 is bolted on the bottom of instrument room outer protection shell 13, vertically from metal
Passed through in the middle of annulus 18.
The self-floating bottom-water temperature detection system is simple in construction, small volume, is easy to operation on the sea and carries out large batch of
Bottom-water temperature detect operation.
Such as accompanying drawing 2, glass cabin ball 10 selects 17 inches of glass cabin balls of Vitrovex companies production, for loading and protecting
The parts such as internal circuit, battery pack simultaneously provide buoyancy in removal process, and the highest of glass cabin ball 10 bears pressure-resistant 6500 meters, can expire
The bottom-water temperature detection in foot overwhelming majority marine site.Glass cabin ball 10 is made up of two hemisphere up and down, and centre passes through clay and adhesive tape
Sealed, and keep the internal negative pressure of glass cabin ball 10 to ensure that sealing is good after 2 times water of instrument room.Underwater sound sensor 9 is pacified
Top loaded on glass cabin ball 10, underwater acoustic communication is carried out by underwater sound signal with outside.The crossing cabin of four core watertight socket 6 is arranged on glass
The outer wall of glass cabin ball 10, is connected by RS485 buses 7 with thermoprobe 4.Fixed support 12 and coupling support 17 are fixed on glass cabin
Inside ball 10, coupling support 17 is arranged on the lower section of fixed support 12.Data acquisition unit 11 is arranged on the top of fixed support 12, battery
Group 14 is fitted around in fixed support 12 with coupling the side of glass cabin ball 10 in the middle of support 17, and 10 groups of 10AH batteries are placed altogether,
Continuously work more than 6 months of seabed signal acquisition base station 24 can be ensured.Battery pack 14 is uniformly placed in glass cabin ball 10 simultaneously,
Instrument is set to keep balance in sinking watching.13 points of outer protection shell is two parts up and down, solid by multiple bolts in the middle of both
It is fixed, play a part of protection inner glass cabin ball 10, and for fixing thermoprobe 4.
Direction sensor 15 is fixed on the top of coupling support 17 with attitude transducer 16, and direction sensor 15 is used to detect sea
The direction deflection angle of bottom signal acquisition base station 24, the HMR3200 types direction sensor used is designed using Honeywell magnetoresistive transducer
To reach small size and high-reliability and precision, precision controlling is in 1 °, 0.1 ° of resolution ratio.Attitude transducer 16 is used to detect seabed
Signal acquisition base station 24 and the angle of inclination of the relative level of thermoprobe 4, are easy to the later stage to calculate bottom-water temperature gradient.The present invention
It is digital accelerometer using ADXL345 type attitude transducers, maximum detection scope ± 16g, highest resolution 3.9mg/LSB,
The angle change less than 1.0 ° can be detected.
Heavy coupling frame 5 employed in such as accompanying drawing 3, the present invention is welded for steel material, and antirust coat is scribbled above.It is heavy
Coupling frame 5 is square frame shape, and middle part is provided with rigid metal annulus 18, and instrument room 2 is placed on metal ring 18.Square frame passes through four
Girder steel is connected with metal ring 18, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 is from metal ring 18
Between pass through.Heavy coupling frame square frame corner is respectively welded with a diameter 120mm, and height 150mm guide shell can be in instrument sinking watching
In to seawater carry out water conservancy diversion, instrument is kept plumbness in dropping process.While guide shell is also beneficial to seabed signal and adopted
Collection base station 24 will not be absorbed among bottom silt easily.The lower section of metal ring 18 is also welded with cylindric guide shell, is conducive to thermometric
Ensure that probe is inserted perpendicularly into during the insertion bottom sediment of probe 4, and thermoprobe 4 is played a protective role.Seabed signal
Heavy coupling frame 5 is abandoned in collection base station 24 after recovery command is received by uncoupling rigging 1, and the buoyancy provided using instrument room 2 is real
Existing self-floating is reclaimed.
This embodiment is not shown specifically uncoupling rigging 1 in Figure of description, and its concrete structure refers to the applicant
Disclosed technical data (the patent No. already：ZL200810117385.4).
It is the cross-sectional view of thermoprobe 4 in self-floating bottom-water temperature detection system such as accompanying drawing 4.Outside thermoprobe 4
Shell is stainless steel material, and main body is cylindrical, long 1~1.5 meter, 3 centimetres of diameter, 0.5 centimetre of wall thickness, and front end is surveyed in coniform
The warm inner hollow of probe 4, tail end is provided with four core watertight sockets 19；The main part of thermoprobe 4 is provided with multiple circular holes 23, and seawater leads to
Cross circular hole 23 to flow freely, to ensure that the internal temperature of thermoprobe 4 is consistent with outside.Place multiple temperature in the inside of thermoprobe 4
Probe unit 21, the inside of temperature detecting unit 21 includes temperature collection circuit 22.Temperature detecting unit 21 is cylindrical, overall close
Envelope, column top and bottom are respectively provided between four core watertight sockets, temperature detecting unit 21 to be connected by RS485 buses 20, temperature
Spend probe unit 21 and lowering is connected inside thermoprobe 4 by RS485 buses 20.
It is temperature collection circuit structured flowchart in temperature detecting unit such as accompanying drawing 5.The inside of temperature detecting unit 21 has included
Whole temperature collection circuit 22, it is considered to bottom-water temperature signal have amplitude of variation small and many low frequency variations feature, it is necessary to temperature
Acquisition Circuit 22, which carries out key design, could obtain reliable bottom-water temperature information.Temperature collection circuit 22 includes resistance bridge electricity
Road, amplifier chip AD8553, analog-digital converter chip AD7791, reference voltage chip MAX6126, microprocessor chip
LPC812, RS485 bus chip MAX485 etc. is constituted.Selected chip all has good low temp rising high precision characteristic, the present invention
Using MAX6126 as reference voltage chip, low-frequency voltage noise (0.1Hz-10Hz) is only 1.45 μ V peak-to-peak values, and temperature drift is only
0.5ppm/ DEG C, it is not only that analog-digital converter AD7791 provides reference voltage, while being powered for resistance bridge circuit, using same
Individual reference power supply can eliminate the error that reference voltage ripple is caused.AD8553 is Auto zeroing instrument amplifier, offset voltage drift
Move as 0.1 μ V/ DEG C, voltage noise is only 0.7 μ V peak-to-peak values (0.01Hz to 10Hz), be particularly suitable for low frequency signal amplification.
AD7791 is 24bit high-precision adcs, and output can change in the range of 9.5Hz to 120Hz, during output 9.5Hz, is had
Effect precision can reach 22bit.The differential signal of resistance bridge output carries out analog-to-digital conversion after AD8553 amplifies by AD7791,
Data signal after analog-to-digital conversion is sent to seabed signal acquisition base station by microcontroller LPC812 through MAX485 by RS485 buses
24。
It is signal amplifying part parallel circuit in temperature collection circuit such as accompanying drawing 6.Specifically, resistance R1, R2, R4, R5 constitute electricity
Bridge network is hindered, resistance bridge output signal connects AD8553 the 2nd pin and the 9th pin respectively；The 1st of resistance R3 one end connection AD8553
Pin, the other end connects AD8553 the 10th pin；One end connects AD8553 the 4th pin, one end connection after resistance R6 parallel connections C9
AD8553 the 5th pin；Resistance R7 one end connect AD8553 the 5th pin, one end connection electric capacity C8, to amplifying through AD8553 after letter
Number filtration, filters out high-frequency signal noise, the analog signal after amplification then carries out analog-to-digital conversion.R3, R6 conduct
AD8553 amplify reference resistance, can by change resistance change amplification coefficient, the present invention in amplification coefficient according to formula 2*
R6/R3 is set to 10.Low Drift Temperature high precision film resistor is used in circuit noise, circuit to reduce.Specifically, R5 is selected
The 10K film resistors that the numbering of Susumu companies is RG2012L-103-L-T05, tolerance is 0.01%, and temperature coefficient is 2ppm/
℃；The 1K film resistors that R1, R2 are RG2012L-102-L-T05 from the numbering of Susumu companies, tolerance 0.01%, temperature system
Number is 2ppm/ DEG C；Resistance R3 selects Vishay company's numberings PLT0805Z2002AST5 20K film resistors, and resistance R6 is used
Vishay company's numberings are TNPU0805100KAZEN00 100K film resistors.
Self-floating bottom-water temperature detection system specific workflow is as follows：
1st, surveying vessel drives to specified marine site, carries out state-detection to self-floating bottom-water temperature detection system, it is ensured that instrument
Reach into extra large requirement.
2nd, self-floating bottom-water temperature detection system obtains GPS information, and staff can interact setting temperature detecting unit work
Make parameter.
3rd, self-floating bottom-water temperature detection system is put into water, it sinks to seabed and makes thermoprobe under gravity
Insert in bottom sediment.Instrument starts bottom-water temperature detection, while seabed signal acquisition base station register instrument attitude information.
When the 4th, reclaiming, by sonar, the underwater sound sensor in marine site and seabed signal acquisition base station is delivered is led to surveying vessel
Believe and send back receipts instruction.Seabed signal acquisition base station receive instruction after uncoupling rigging start working, after about 5 minutes wirerope with
Seabed signal acquisition base station departs from, and heavy coupling frame is dropped, and seabed signal acquisition base station is together with thermoprobe under buoyancy
Sea is risen to, ship is measured and reclaims.
5th, the data for extracting record are analyzed and processed.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope that the embodiment of the present invention is disclosed, the change that can readily occur in or
Replacement should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claim
Scope is defined.
Claims (1)
1. a kind of self-floating bottom-water temperature detection system, it belongs to geophysical survey instrument, and it includes seabed signal acquisition base
Stand（24）And thermoprobe（4）；Wherein seabed signal acquisition base station（24）Including uncoupling rigging（1）, instrument room（2）With heavy coupling frame
（5）；Instrument room（2）Including internal single glass cabin ball（10）With outer protection shell（13）；Glass cabin ball（10）Provided with one four
Core watertight socket（6）, seabed signal acquisition base station（24）With thermoprobe（4）Pass through wire（7）Connection；Seabed signal acquisition base
Stand（24）It has been internally integrated direction sensor（15）With attitude transducer（16）, for obtaining inclining behind thermoprobe insertion seabed
Ramp-like condition；Glass cabin ball outer protection shell（13）Two parts above and below point, both are fixed by multiple bolts, thermoprobe（4）It is logical
Cross and be bolted to outer protection shell（13）Bottom；Outer protection shell（13）Top is installed by uncoupling rigging（1）, instrument room（2）It is whole
Body is positioned over heavy coupling frame（5）On；Heavy coupling frame（5）For square frame shape, middle part is provided with rigid metal annulus, and square frame passes through four girder steels
It is connected with rigid metal annulus, hollow, thermoprobe between metal ring, girder steel, heavy coupling frame square frame（4）From metal ring（18）
Centre is passed through；Thermoprobe（4）It is vertically fixed on by bolt in outside containment vessel（13）Bottom, glass cabin ball（10）With thermometric
Probe（4）Tail end is respectively provided with four core watertight sockets, and both pass through RS485 buses（7）Connection, bus is divided into power line, ground wire, number
According to line A and data wire B；Thermoprobe（4）Main body is cylindrical, long 1 ~ 1.5 meter, 3 centimetres of diameter, 0.5 centimetre of wall thickness, and front end is in
Coniform, thermoprobe tail end is provided with four core watertight sockets；Thermoprobe（4）Main part is provided with multiple circular holes（23）, seawater
Can be in thermoprobe（4）It is inside and outside to flow freely；
Wherein, direction sensor（15）Using HMR3200 type direction sensors, 1 ° of directional precision, 0.1 ° of resolution ratio；Bus power source
Voltage is 5.2V, thermoprobe（4）Place multiple temperature detecting units in inside（21）, temperature detecting unit（21）Middle addition voltage stabilizing
Circuit；Temperature detecting unit（21）Pass through RS485 buses（20）Lowering is connected in thermoprobe（4）It is internal；Temperature detecting unit
（21）Place the temperature collection circuit of integrated negative tempperature coefficient thermistor in inside（22）, the negative temperature coefficient thermistor power used
Resistance change in resistance scope at 0 DEG C to 10 DEG C is 15.4 kilo-ohms to 9.7 kilo-ohms；LPC812 micro-controls are employed in temperature collection circuit
Device processed, pin function can realize that function switches, and pin 1 is assigned as the choosing of AD pieces, and pin 2 is assigned as AD clock signals, 7 points of pin
With for AD input signals, pin 8 is assigned as AD output signals, and pin 14 is assigned as RS485 bus-in singals, and pin 15 is distributed
For MAX485 chip selection signals, pin 16 is assigned as RS485 bus-out signals；LPC812 microcontrollers carry universal asynchronous receiving-transmitting
Transmitter UART, and comprising address register, address can be separately provided；Temperature detecting unit（21）The temperature data warp of acquisition
Sent after crossing amplification, analog-to-digital conversion by LPC812 by UART, being modulated into RS485 mode bus by MAX485 chips is passed
It is defeated；
Temperature detecting unit（21）Cylindrical, integral sealing, column top and bottom are respectively provided with four core watertight sockets, can be independent
Connect seabed signal acquisition base station（24）Work also can connect seabed signal acquisition base station after multiple concatenations（24）After work, concatenation
The detection of bottom-water temperature gradient can be carried out；When detecting bottom-water temperature gradient, appropriate length RS485 buses can be selected according to demand,
Seabed signal acquisition base station（24）Pass through RS485 buses and thermoprobe internal temperature probe unit（21）Communicated and data
Transmission；
Temperature detecting unit（21）Complete temperature collection circuit (22) is internally integrated, can directly output digit signals, data signal
Pass through RS485 bus transfers to seabed signal acquisition base station（24）In and store, seabed signal acquisition base station（24）Pass through RS485
Bus marco temperature detecting unit（21）Working time simultaneously determines sample rate running parameter；
Glass cabin ball（10）It is made up of two hemisphere up and down and centre is sealed by clay and adhesive tape, and keeps glass cabin ball
（10）Internal negative pressure is to ensure instrument room（2）Sealing is good after lower water；Underwater sound sensor（9）It is installed on glass cabin ball（10）'s
Top, underwater acoustic communication is carried out by underwater sound signal with outside；Four core watertight sockets（6）Crossing cabin is arranged on glass cabin ball（10）Outside
Wall, passes through RS485 buses（7）With thermoprobe（4）Connection；Fixed support（12）With coupling support（17）It is fixed on glass cabin ball
（10）Inside, couples support（17）Installed in fixed support（12）Lower section；Data acquisition unit（11）Installed in fixed support（12）
Top, battery pack（14）It is fitted around in fixed support（12）With coupling support（17）Middle glass cabin ball（10）Sideways, altogether
Place 10 groups of 10AH batteries；Battery pack（14）In glass cabin ball（10）Interior uniform placement, makes instrument keep flat in sinking watching
Weighing apparatus；
In temperature collection circuit in signal amplifying part parallel circuit, resistance R1, R2, R4, R5 constitute resistance bridge network, resistance bridge output
Signal connects AD8553 the 2nd pin and the 9th pin respectively；Resistance R3 one end connects AD8553 the 1st pin, other end connection AD8553
The 10th pin；One end connects AD8553 the 4th pin after resistance R6 parallel connections C9, and one end connects AD8553 the 5th pin；Resistance R7 one end
Connect AD8553 the 5th pin, one end connection electric capacity C8, to amplifying through AD8553 after signal filtration, filter out high frequency letter
Number noise, the analog signal after amplification then carries out analog-to-digital conversion；R3, R6 amplify reference resistance as AD8553, can be by changing
Become resistance and change amplification coefficient.
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| CN108226646B (en) * | 2018-01-17 | 2022-02-22 | 珠海极海半导体有限公司 | Sensitive resistance measuring device and measuring method |
| CN111579128B (en) * | 2020-06-01 | 2021-11-23 | 杭州岚达科技有限公司 | Compost internal temperature field monitoring system |
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| CN201397138Y (en) * | 2009-03-16 | 2010-02-03 | 国家海洋技术中心 | Real-time monitoring system for offshore marine environment in polar region |
| CN104062692B (en) * | 2014-07-08 | 2017-02-15 | 广州海洋地质调查局 | High-precision seabed terrestrial heat flow detection device |
| CN104568226B (en) * | 2015-01-07 | 2015-10-28 | 中国科学院南海海洋研究所 | A kind of oceanic heat flow long-term observation probe and using method thereof |
| CN104570157B (en) * | 2015-01-07 | 2015-10-28 | 中国科学院南海海洋研究所 | A kind of collecting method of oceanic heat flow long-term observation |
| CN104950344A (en) * | 2015-06-03 | 2015-09-30 | 中国科学院南海海洋研究所 | Seabed heat flow long-term observation probe based on underwater robot platform |
| CN205919910U (en) * | 2016-02-25 | 2017-02-01 | 中国科学院地质与地球物理研究所 | From floating seabed temperature detect system |
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Inventor after: Wang Sujing Inventor after: You Qingyu Inventor after: Guo Yonggang Inventor after: Xu Xiqiang Inventor after: Hao Tianyao Inventor after: Xu Qing Inventor after: Zhang Yan Inventor after: Li Shaoqing Inventor after: Zhang Shengquan Inventor before: Wang Sujing Inventor before: You Qingyu Inventor before: Xu Xiqiang Inventor before: Hao Tianyao Inventor before: Xu Qing Inventor before: Zhang Yan Inventor before: Li Shaoqing Inventor before: Zhang Shengquan |
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Effective date of registration: 20170719 Address after: 100029 Beijing city Chaoyang District Beitucheng West Road No. 19, Chinese Science Institute of Geology and Geophysics Applicant after: Institute of Geology and Geophysics, Chinese Academy of Sciences Applicant after: Institute of acoustics, Chinese Academy of Sciences Address before: 100029 Beijing city Chaoyang District Beitucheng West Road No. 19, Chinese Science Institute of Geology and Geophysics Applicant before: Institute of Geology and Geophysics, Chinese Academy of Sciences |
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