CN105547515A - Self-floating undersea temperature detecting system - Google Patents
Self-floating undersea temperature detecting system Download PDFInfo
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- CN105547515A CN105547515A CN201610102475.0A CN201610102475A CN105547515A CN 105547515 A CN105547515 A CN 105547515A CN 201610102475 A CN201610102475 A CN 201610102475A CN 105547515 A CN105547515 A CN 105547515A
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- thermoprobe
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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 self-floating undersea temperature detecting system which comprises an undersea signal collecting base station and a temperature detecting probe. The temperature detecting probe can be used for multiple times and fully makes contact with seawater, temperature detecting units are arranged in the temperature detecting probe and combined conveniently and flexibly to output digital signals, and the data quality can be effectively improved; through the undersea signal collecting base station, the instrument recycling rate is guaranteed, and the sea temperature detecting risk is reduced. The self-floating undersea temperature detecting system can detect the undersea temperature both in a neritic region and in an abyssal region and is beneficial for long-term undersea temperature detecting due to long sea staying time.
Description
Technical field
The invention belongs to geophysical survey field, be specifically related to a kind of bottom-water temperature detection system for geophysical survey.
Background technology
Bottom-water temperature detection is the important means of geophysical method, especially the result of detection of the thermograde of heat flux regions directly can reflect the Heat transmission process of earth interior, us are helped to carry out the research of thermal drivers framework evolutionary process in geodynamics, earth interior, for the mineral wealth detections such as sea-bottom oil-gas provide assessment foundation.
Current bottom-water temperature detection realizes mainly through petroleum drilling thermometric and the detection of oceanic heat flow meter.Wherein petroleum drilling thermometric mainly carries out in petroleum region and neritic area, and operating condition restriction is many, costly and efficiency is low; Oceanic heat flow meter is simple to operate compared with petroleum drilling thermometric, efficiency is higher, mainly adopts oceanic heat flow meter to carry out bottom-water temperature detection in the world.During operation, oceanic heat flow meter is placed in water by wirerope, insert under gravity in marine bottom sediment, after the probe of oceanic heat flow meter and marine bottom sediment contact position temperature reach stable state, measure bottom-water temperature by internal heat photosensitive elements, reclaimed by wirerope after having measured.Current oceanic heat flow meter mainly comprises three types: Bullard type, Ewing type and Lister type.Three's common feature is all reclaimed by wirerope release, and thermal sensing element is the inwall of carry at reinforcing pipe or the diverse location of steel lance outer wall at certain intervals, and thermal sensing element is connected to record cell simultaneously, and record cell is placed on sealing in independent pressure resistant vessel.Oceanic heat flow meter more conveniently can measure the bottom-water temperature within km, but promotes at double along with sea water advanced increase detects difficulty, and efficiency reduces and risk increases greatly.The probe of oceanic heat flow meter can cause frictional heat in insertion sediment process, the bad grasp of concrete heat steady time, the bottom-water temperature of some specified sea areas affects the situation presenting acute variation in time by earth interior simultaneously, needs oceanic heat flow meter to stay sea to obtain accurate temperature information for a long time.In addition, in the course of the work, surveying vessel affects can drift about by surge oceanic heat flow meter, and under the effect of wirerope, seabed heat flow meter may change in the position in seabed, even cause oceanic heat flow meter to damage and cause operation failure, this all proposes new problem to the application of oceanic heat flow meter.
The topical type in bottom-water temperature detection process in view of petroleum drilling thermometric and oceanic heat flow meter, use for reference the input recovery technology of current submarine seismograph maturation, be necessary to research and develop and a kind ofly reclaim conveniently, stay sea time long, the little self-floating bottom-water temperature detection system of being convenient to carry out bottom-water temperature in enormous quantities detection of volume.
Summary of the invention
For the deficiencies in the prior art, provide a kind of bottom-water temperature detection system, its structure is simple, self-floating reclaims, be applicable to the detection of long-term bottom-water temperature, to meet the demand of marine geophysical survey.
For achieving the above object, the technical solution of invention is as follows:
A kind of self-floating bottom-water temperature detection system, comprises signals collecting base station, seabed 24 and thermoprobe 4.Wherein seabed signals collecting base station 24 comprises uncoupling rigging 1, instrument room 2 and heavy coupling frame 5; Instrument room 2 comprises inner single glass cabin ball 10 and outer protection shell 13; Glass cabin ball 10 is provided with a four-core watertight socket 6, and signals collecting base station, seabed 24 is connected by wire 7 with thermoprobe 4.Glass cabin ball outer protection shell about 13 points two parts, both are fixed by multiple bolt, and thermoprobe 4 is bolted on bottom outer protection shell 13; Uncoupling rigging 1 is installed on outer protection shell 13 top, and instrument room 2 entirety is positioned 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 connected with rigid metal annulus by four girder steels, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 passes in the middle of metal ring 18.
In self-floating bottom-water temperature detection system; thermoprobe 4 is vertically fixed on bottom outside containment vessel 13 by bolt; glass cabin ball 10 and thermoprobe 4 tail end are respectively provided with four-core watertight socket; both are connected by RS485 bus 7, and bus is divided into power lead, ground wire, data line A and data line B.Thermoprobe 4 main body is cylindric, long 1 ~ 1.5 meter, diameter 3 centimetres, wall thickness 0.5 centimetre, and front end is coniform, and thermoprobe tail end is provided with four-core watertight socket; Thermoprobe 4 main part is provided with multiple circular hole 23, and seawater can flow freely inside and outside thermoprobe 4.
Further, multiple temperature detecting unit 21 is placed in thermoprobe 4 inside, and temperature detecting unit 21 is connected by RS485 bus 20 and lowering is inner at thermoprobe 4.The temperature collection circuit 22 of integrated negative tempperature coefficient thermistor is placed in temperature detecting unit 21 inside.Temperature detecting unit 21 is in cylindric, integral sealing, four-core watertight socket is respectively arranged at column top and bottom, can connect separately signals collecting base station, seabed 24 and work and also can connect signals collecting base station, seabed 24 after multiple serial connection and work, can carry out the detection of bottom-water temperature gradient after serial connection.During detection bottom-water temperature gradient, can select appropriate length RS485 bus according to demand, undertaken communicating by RS485 bus and thermoprobe internal temperature probe unit 21 in signals collecting base station, seabed 24 and data are transmitted.
In addition, the inner integrated complete temperature collection circuit 22 of temperature detecting unit 21, can direct output digit signals, digital signal is by storing in RS485 bus transfer to signals collecting base station, seabed 24, and signals collecting base station, seabed 24 is by RS485 bus marco temperature detecting unit 21 working time and determine the running parameters such as sampling rate.
Use technical scheme of the present invention, following beneficial effect can be had:
1, in the present invention, signals collecting base station in seabed is only connected by the RS485 bus comprising four wires with between thermoprobe, reduces underwater electrical connector crossing cabin difficulty.Use single glass cabin ball to communicate with the temperature detecting unit of inner more than 10 of thermoprobe simultaneously, solve a difficult problem for bottom-water temperature detection system miniaturization.
2, temperature detecting unit internal temperature Acquisition Circuit provided by the invention is integrated with negative tempperature coefficient thermistor, negative tempperature coefficient thermistor remolding sensitivity platinum resistance in bottom-water temperature interval (0 DEG C-10 DEG C) is higher, can realize bottom-water temperature detected with high accuracy.The numeral that temperature collection circuit achieves sample point temperature exports, avoid the long interference caused of transmission range between thermistor and data board in traditional heat flow meter probe, especially when detecting bottom-water temperature gradient, because needs are to temperature multidraw, analog signal transmission distance can be caused further to lengthen at double, and the present invention effectively can improve the quality obtaining data.
3, self-floating bottom-water temperature detection system provided by the invention improves the instrument recovery, reduces ocean temperature detection risk, both also can detect bottom-water temperature in pelagic realm in neritic area.Comparing conventional subsea heat flow meter stays the sea time longer, is conducive to long-term bottom-water temperature data acquisition; Volume little, easy and simple to handle being conducive to carries out bottom-water temperature in enormous quantities detection operation.
Accompanying drawing explanation
Fig. 1 is the perspective view according to self-floating bottom-water temperature detection system of the present invention;
Fig. 2 is according to self-floating bottom-water temperature detection system cross-sectional view of the present invention;
Fig. 3 is for sinking coupling frame schematic diagram according to self-floating bottom-water temperature detection system of the present invention;
Fig. 4 is according to thermoprobe cross-sectional view in self-floating bottom-water temperature detection system of the present invention;
Fig. 5 is according to temperature collection circuit structured flowchart in self-floating bottom-water temperature detection system temperature detecting unit of the present invention;
Fig. 6 is according to signal amplifying part parallel circuit figure in self-floating bottom-water temperature detection system temperature detecting unit temperature collection circuit of the present invention;
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 clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of self-floating bottom-water temperature detection system, comprises signals collecting base station, seabed 24 and thermoprobe 4.Wherein signals collecting base station in seabed comprises uncoupling rigging 1, instrument room 2 and heavy coupling frame 5; Instrument room 2 comprises inner single glass cabin ball 10 and outer protection shell 13; Glass cabin ball 10 is provided with a four-core watertight socket 6, and signals collecting base station, seabed 24 is connected by wire 7 with thermoprobe 4.Glass cabin ball outer protection shell about 13 points two parts, both are fixed by multiple bolt, and thermoprobe 4 is bolted on bottom outer protection shell 13; Uncoupling rigging 1 is installed on outer protection shell 13 top, and instrument room 2 entirety is positioned 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 connected with rigid metal annulus by four girder steels, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 passes in the middle of metal ring 18.
Wherein, inside, signals collecting base station 24, seabed is integrated with direction sensor 15 and attitude sensor 16, inserts the tilt condition behind seabed for obtaining thermoprobe 4.Preferably, the present invention adopts HMR3200 type direction sensor, directional precision 1 °, resolution 0.1 °.Thermoprobe 4 is bolted on bottom outer protection shell 13, and glass cabin ball 10 and thermoprobe 4 tail end are respectively provided with four-core watertight socket, and connected by RS485 bus, bus is divided into power lead, ground wire, data line A and data line B.Bus power source voltage is 5.2V, for ensureing temperature detecting unit power good, adds mu balanced circuit in temperature detecting unit 21.
Thermoprobe 4 main body in the present invention is cylindric, long 1 ~ 1.5 meter, diameter 3 centimetres, wall thickness 0.5 centimetre, and front end is coniform, and tail end is provided with four-core watertight socket 19; Thermoprobe main part is provided with multiple circular hole 23, and seawater can flow freely inside and outside thermoprobe 4; Multiple temperature detecting unit 21 is placed in thermoprobe 4 inside, and it is inner at thermoprobe 4 that temperature detecting unit 21 connects lowering by RS485 bus 20.The temperature collection circuit 22 of integrated negative tempperature coefficient thermistor is placed in temperature detecting unit 21 inside, the negative tempperature coefficient thermistor adopted change in resistance scope 0 DEG C to 10 DEG C time is about 15.4 kilo-ohms to 9.7 kilo-ohms, higher with platinum resistance phase specific sensitivity, be convenient to the detected with high accuracy of bottom-water temperature.In order to the power consumption of saving temperature detecting unit 21 is beneficial to the detection of long-time bottom-water temperature, have employed LPC812 microcontroller, only 16 pins in temperature collection circuit, pin function can switch by practical function.In the present invention, pin one is assigned as the choosing of AD sheet, pin two is assigned as AD clock signal, pin 7 is assigned as AD input signal, pin 8 is assigned as AD output signal, pin one 4 is assigned as RS485 bus-in singal, pin one 5 is assigned as MAX485 chip selection signal, and pin one 6 is assigned as RS485 bus-out signal.LPC812 carries UART (universal asynchronous receiving-transmitting transmitter), and comprises address register, can arrange address separately.The temperature data that temperature detecting unit 21 obtains is sent by UART by LPC812 after amplification, analog to digital conversion, is modulated into RS485 mode bus transmits through MAX485 chip.Temperature detecting unit 21 is in cylindric, integral sealing, column top and bottom are respectively provided with four-core watertight socket, can connect separately signals collecting base station, seabed 24 and work and also can connect signals collecting base station, seabed 24 after multiple serial connection and work, can carry out the detection of bottom-water temperature gradient after serial connection.During detection bottom-water temperature gradient, can select appropriate length RS485 bus according to demand, undertaken communicating by RS485 bus and temperature detecting unit 21 in signals collecting base station, seabed 24 and data are transmitted.Specific works pattern is, signals collecting base station, seabed 24 sends to all temperature detecting unit 21 by RS485 bus by needing temperature detecting unit 21 address obtaining data, when temperature detecting unit 21 judges that address contained by obtaining information is identical with oneself, internal microcontroller LPC812 control temperature Acquisition Circuit 22 works, and the temperature data collected is transferred to signals collecting base station, seabed 24, if address and oneself not being inconsistent, do not carry out any operation to save power consumption.
Further, temperature detecting unit 21 inside is integrated with complete temperature collection circuit 22, can direct output digit signals, signal is by storing in RS485 bus transfer to signals collecting base station, seabed 24, and signals collecting base station, seabed 24 is by RS485 bus marco temperature detecting unit 21 working time and determine the running parameters such as sampling rate.
Particularly, further detailed description is given below in conjunction with accompanying drawing.
As shown in Figure 1, be self-floating bottom-water temperature detection system three-dimensional structure diagram, comprise signals collecting base station, seabed 24 and thermoprobe 4.Signals collecting base station, seabed 24 comprises uncoupling rigging 1, instrument room 2 and heavy coupling frame 5; Instrument room 2 comprises inner 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 above instrument room 2, and four wirerope 3 one end are fixed on the fixed interface place of uncoupling rigging 1, and the other end utilizes nut 8 to lock at heavy coupling frame 5 place, instrument room 2 and heavy coupling frame 5 is fixed.Thermoprobe 4 is bolted on bottom instrument room outer protection shell 13, vertically passes in the middle of metal ring 18.
Described self-floating bottom-water temperature detection system structure is simple, and volume is little, is convenient to offshore operation and carries out large batch of bottom-water temperature detection operation.
As accompanying drawing 2; 17 inches of glass cabin balls that glass cabin ball 10 selects Vitrovex company to produce; for loading and protecting the parts such as internal circuit, electric battery and provide buoyancy in removal process, glass cabin ball 10 is the highest bears withstand voltage 6500 meters, can meet the bottom-water temperature detection in most marine site.Glass cabin ball 10 is made up of upper and lower two hemisphere, middle is sealed by clay and adhesive tape, and keeps glass cabin ball 10 internal negative pressure good with sealing after ensureing instrument room 2 times water.Underwater sound sensor 9 is installed on the top of glass cabin ball 10, carries out underwater acoustic communication by underwater sound signal and outside.Four-core watertight socket 6 crossing cabin is arranged on glass cabin ball 10 outer wall, is connected with thermoprobe 4 by RS485 bus 7.It is inner that fixed support 12 and coupling support 17 are fixed on glass cabin ball 10, and coupling support 17 is arranged on below fixed support 12.Data acquisition unit 11 is arranged on above fixed support 12, and electric battery 14, around being arranged on fixed support 12 and ball 10 side, glass cabin in the middle of the support 17 that is coupled, being placed 10 groups, 10AH battery altogether, can be ensured seabed signals collecting base station 24 continuous working more than 6 months.Electric battery 14 is evenly placed in glass cabin ball 10 simultaneously, makes instrument in sinking watching, keep balance.Outer protection shell 13 is divided into upper and lower two parts, is fixed in the middle of both by multiple bolt, plays the effect of protection inner glass cabin ball 10, and for fixing thermoprobe 4.
Direction sensor 15 is fixed on above coupling support 17 with attitude sensor 16, direction sensor 15 is for detecting signals collecting base station 24, seabed direction deflection angle, the HMR3200 type direction sensor used adopts magnetoresistive transducer design in Honeywell to reach small size and high-reliability and precision, precision controlling at 1 °, resolution 0.1 °.Attitude sensor 16, for detecting signals collecting base station, seabed 24 and the angle of inclination in thermoprobe 4 relative level face, is convenient to later stage calculating bottom-water temperature gradient.The present invention adopts ADXL345 type attitude sensor, is digital accelerometer, and maximum detection scope ± 16g, highest resolution 3.9mg/LSB, can detect the angle change lower than 1.0 °.
As accompanying drawing 3, the heavy coupling frame 5 adopted in the present invention is welded for steel material, scribbles antirust coat above.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 is connected with metal ring 18 by four girder steels, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe 4 passes in the middle of metal ring 18.Heavy coupling frame square frame corner is respectively welded with a diameter 120mm, and the guide shell of height 150mm, can carry out water conservancy diversion to seawater, make instrument keep plumbness in dropping process in instrument sinking watching.Simultaneously guide shell is also conducive to signals collecting base station, seabed 24 and can not is absorbed among bottom silt easily.Also be welded with cylindric guide shell below metal ring 18, be conducive to thermoprobe 4 and insert in marine bottom sediment process and ensure that probe vertically inserts, and thermoprobe 4 is played a protective role.Heavy coupling frame 5 is abandoned by uncoupling rigging 1 in signals collecting base station, seabed 24 after receiving recovery command, and the buoyancy utilizing instrument room 2 to provide realizes self-floating and reclaims.
This embodiment is not shown specifically uncoupling rigging 1 in Figure of description, and its concrete structure refers to the applicant's disclosed technical information (patent No.: ZL200810117385.4) already.
As accompanying drawing 4, it is thermoprobe 4 cross-sectional view in self-floating bottom-water temperature detection system.Thermoprobe 4 shell is stainless steel material, and main body is cylindric, long 1 ~ 1.5 meter, diameter 3 centimetres, wall thickness 0.5 centimetre, and front end is coniform, thermoprobe 4 inner hollow, and tail end is provided with four-core watertight socket 19; Thermoprobe 4 main part is provided with multiple circular hole 23, and seawater is flowed freely by circular hole 23, consistent with outside to ensure thermoprobe 4 internal temperature.Multiple temperature detecting unit 21 is placed in thermoprobe 4 inside, and temperature detecting unit 21 inside comprises temperature collection circuit 22.Temperature detecting unit 21 is in cylindric, and integral sealing, column top and bottom are respectively provided with four-core watertight socket, are connected between temperature detecting unit 21 by RS485 bus 20, and it is inner at thermoprobe 4 that temperature detecting unit 21 connects lowering by RS485 bus 20.
As accompanying drawing 5, it is temperature collection circuit structured flowchart in temperature detecting unit.Temperature detecting unit 21 inside comprises complete temperature collection circuit 22, considers that bottom-water temperature signal has the little and feature of many low frequency variations of amplitude of variation, needs to carry out key design to temperature collection circuit 22 and could obtain reliable bottom-water temperature information.Temperature collection circuit 22 comprises the composition such as resistance bridge circuit, amplifier chip AD8553, analog to digital converter chip AD7791, reference voltage chip MAX6126, microprocessor chip LPC812, RS485 bus chip MAX485.Selected chip all has good low temp rising high precision characteristic, the present invention adopts MAX6126 as reference voltage chip, low-frequency voltage noise (0.1Hz-10Hz) is only 1.45 μ V peak-to-peak values, temperature drift is only 0.5ppm/ DEG C, it is not only analog to digital converter AD7791 and provides reference voltage, simultaneously for resistance bridge circuit is powered, the error adopting same reference power supply can eliminate reference voltage ripple to cause.AD8553 is Auto zeroing instrument amplifier, and offset voltage drift is 0.1 μ V/ DEG C, and voltage noise is only 0.7 μ V peak-to-peak value (0.01Hz to 10Hz), is particularly suitable for low frequency signal and amplifies.AD7791 is 24bit high-precision adc, exports and can change in the scope of 9.5Hz to 120Hz, and when exporting 9.5Hz, effective accuracy can reach 22bit.The differential signal that resistance bridge exports carries out analog to digital conversion by AD7791 after AD8553 amplifies, and the digital signal after analog to digital conversion is mail to signals collecting base station, seabed 24 through MAX485 by RS485 bus by microcontroller LPC812.
As accompanying drawing 6, it is signal amplifying part parallel circuit in temperature collection circuit.Concrete, resistance R1, R2, R4, R5 form resistance bridge network, and resistance bridge output signal connects the 2nd pin and the 9th pin of AD8553 respectively; Resistance R3 one end connects the 1st pin of AD8553, and the other end connects the 10th pin of AD8553; After resistance R6 C9 in parallel, one end connects the 4th pin of AD8553, and one end connects the 5th pin of AD8553; Resistance R7 one end connects the 5th pin of AD8553, and one end connects electric capacity C8, and to the signal filtration after AD8553 amplification, filtering high-frequency signal noise, the simulating signal after amplification carries out analog to digital conversion subsequently.R3, R6 amplify reference resistance as AD8553, and change amplification coefficient by changing resistance, in the present invention, amplification coefficient is set to 10 according to formula 2*R6/R3.For reducing circuit noise, in circuit, adopt Low Drift Temperature high precision sheet resistance.Concrete, R5 selects the 10K sheet resistance being numbered RG2012L-103-L-T05 of Susumu company, and tolerance is 0.01%, and temperature coefficient is 2ppm/ DEG C; R1, R2 select the 1K sheet resistance being numbered RG2012L-102-L-T05 of Susumu company, tolerance 0.01%, and temperature coefficient is 2ppm/ DEG C; Resistance R3 selects the 20K sheet resistance of Vishay company numbering PLT0805Z2002AST5, and resistance R6 adopts Vishay company to be numbered the 100K sheet resistance of TNPU0805100KAZEN00.
Self-floating bottom-water temperature detection system specific works flow process is as follows:
1, surveying vessel drives to and specifies marine site, carries out state-detection, ensure that instrument reaches into extra large requirement to self-floating bottom-water temperature detection system.
2, self-floating bottom-water temperature detection system obtains GPS information, and staff can set temperature probe unit running parameter alternately.
3, self-floating bottom-water temperature detection system is put into water, it sinks to seabed under gravity and thermoprobe is inserted in marine bottom sediment.Instrument starts bottom-water temperature detection, simultaneously signals collecting base station, seabed register instrument attitude information.
When 4, reclaiming, surveying vessel is carried out communicating and sends it back receipts instruction in input marine site with underwater sound sensor in signals collecting base station, seabed by sonar.After signals collecting base station, seabed receives instruction, uncoupling rigging is started working, and after about 5 minutes, wirerope and signals collecting base station, seabed depart from, and heavy coupling frame is dropped, and signals collecting base station, seabed rises to sea together with thermoprobe under buoyancy, and measured ship reclaims.
5, the data analysis process of record is extracted.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the present invention discloses, the change that can expect easily or replace all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (4)
1. a self-floating bottom-water temperature detection system, it belongs to geophysical survey instrument, and it comprises signals collecting base station, seabed (24) and thermoprobe (4); Wherein seabed signals collecting base station (24) comprise uncoupling rigging (1), instrument room (2) and heavy coupling frame (5); Instrument room (2) comprises inner single glass cabin ball (10) and outer protection shell (13); Glass cabin ball (10) is provided with a four-core watertight socket (6), and signals collecting base station, seabed (24) is connected by wire (7) with thermoprobe (4); Signals collecting base station, seabed (24) inside is integrated with direction sensor (15) and attitude sensor (16), inserts the tilt condition behind seabed for obtaining thermoprobe; Two parts about glass cabin ball outer protection shell (13) point, both are fixed by multiple bolt, and thermoprobe (4) is bolted on outer protection shell (13) bottom; Uncoupling rigging (1) is installed on outer protection shell (13) top, and instrument room (2) entirety is positioned on heavy coupling frame (5); Heavy coupling frame (5) is square frame shape, middle part is provided with rigid metal annulus, square frame is connected with rigid metal annulus by four girder steels, and hollow between metal ring, girder steel, heavy coupling frame square frame, thermoprobe (4) passes in the middle of metal ring (18).
2. self-floating bottom-water temperature detection system according to claim 1, thermoprobe (4) is vertically fixed in outside containment vessel (13) bottom by bolt, glass cabin ball (10) and thermoprobe (4) tail end are respectively provided with four-core watertight socket, both are connected by RS485 bus (7), and bus is divided into power lead, ground wire, data line A and data line B; Thermoprobe (4) main body is cylindric, long 1 ~ 1.5 meter, diameter 3 centimetres, wall thickness 0.5 centimetre, and front end is coniform, and thermoprobe tail end is provided with four-core watertight socket; Thermoprobe (4) main part is provided with multiple circular hole (23), and seawater can flow freely inside and outside thermoprobe (4).
3. self-floating bottom-water temperature detection system according to claim 1 and 2, it is characterized in that: multiple temperature detecting unit (21) is placed in thermoprobe (4) inside, temperature detecting unit (21) is connected by RS485 bus (20) and lowering is inner at thermoprobe (4); The temperature collection circuit (22) of integrated negative tempperature coefficient thermistor is placed in temperature detecting unit (21) inside; Temperature detecting unit (21) is in cylindric, integral sealing, column top and bottom are respectively provided with four-core watertight socket, signals collecting base station, seabed (24) work can be connected separately and also can connect signals collecting base station, seabed (24) work after multiple serial connection, the detection of bottom-water temperature gradient after serial connection, can be carried out; During detection bottom-water temperature gradient, can select appropriate length RS485 bus according to demand, undertaken communicating by RS485 bus and thermoprobe internal temperature probe unit (21) in signals collecting base station, seabed (24) and data are transmitted.
4. the self-floating bottom-water temperature detection system according to Claims 2 or 3, it is characterized in that: the inner integrated complete temperature collection circuit (22) of temperature detecting unit (21), can direct output digit signals, digital signal is by storing in RS485 bus transfer to signals collecting base station, seabed (24), and signals collecting base station, seabed (24) is by RS485 bus marco temperature detecting unit (21) working time and determine the running parameters such as sampling rate.
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| CN108226646A (en) * | 2018-01-17 | 2018-06-29 | 纳思达股份有限公司 | sensitive resistance measuring device and measuring method |
| CN109990913A (en) * | 2019-04-19 | 2019-07-09 | 山东省海洋仪器仪表科技中心 | A kind of adjustable tail fins bottom sediment temperature detection device |
| CN111579128A (en) * | 2020-06-01 | 2020-08-25 | 杭州岚达科技有限公司 | Compost internal temperature field monitoring system |
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