CN100545645C - The measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system - Google Patents
The measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system Download PDFInfo
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- CN100545645C CN100545645C CNB2006100438878A CN200610043887A CN100545645C CN 100545645 C CN100545645 C CN 100545645C CN B2006100438878 A CNB2006100438878 A CN B2006100438878A CN 200610043887 A CN200610043887 A CN 200610043887A CN 100545645 C CN100545645 C CN 100545645C
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Abstract
The invention discloses a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system, this in-situ measurement system comprises, measuring sonde, attitude detection circuit, thermal pulse energizing circuit, temperature collection circuit, CPU, I/O and storer.This measurement mechanism comprises: a. memory storage; B. input media; C. pick-up unit; D. calculation element is according to formula k=0.029275 * Q/ (T
mt
m) calculate thermal source sedimental thermal conductivity on every side, and this thermal conductivity data is stored in the eeprom memory; E. output unit shows and playback above-mentioned data, and measures and finish.This measurement mechanism adopts filtering, high-order A/D conversion and complicated temperature transition algorithm, has improved the measuring accuracy of thermal conductivity, begins to excite from the measuring sonde thermal pulse, dispose to temperature signal collection, only need 1～2 minute, reduced the time of seabed operation, improved surveying work efficient.This apparatus structure is simple, and volume is little, and is in light weight, is convenient to transportation and laboratory storage, can communicate by letter with exterior PC easily.
Description
Technical field
The present invention relates to a kind of improvement of ocean measuring instrument, specifically is a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system.It is that the thermal conductivity of oceanic sediment is carried out accurate measurement mechanism under the original position state in seabed, and it belongs to the marine physics field of measuring technique.
Background technology
In modern marine geothermy, the thermal conductivity of oceanic sediment is an important parameter that characterizes its macroscopic property.By the sedimental thermal conductivity of Measuring Oceanic, and then utilizing the Fourier law to determine the seabed geothermal heat flow, and it is analyzed and calculates, is the hot status information of obtaining oceanic crust, and studies one of the structural evolution in seabed and important means of resource situation in view of the above.Oceanic sediment thermal conductivity in-situ requires to measure sedimental thermal conductivity under the original position state in seabed, this method can reduce to the full extent to sedimental physical perturbation, and the result who obtains can reflect sedimental thermal property more accurate, more realistically.There is a kind of Lister technology to be based on the conduction principle of transient heat pulse in the cylindric medium of endless at present, the built-in temperature sensor more than the length 3m is arranged in requirement and the seeker of heating wire inserts in the sediment, calculates sedimental thermal conductivity by the temperature variation of temperature sensor senses behind the observation heating wire heating power.The problem that this technology exists comprises: (1) probe length is excessive, is unfavorable for safeguarding, stores and transportation; (2) Instrument Manufacturing Technique complexity, cost height are unfavorable for widespread use and popularization; (3) time of single measurement longer, surpass 5 minutes, be unfavorable for reducing marine task difficulty and the cost of surveying.
Summary of the invention
Goal of the invention of the present invention is, overcome the above-mentioned shortcoming of prior art, and a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system is provided.This device can carry out fast oceanic sediment thermal conductivity, and accurately original position is measured in real time, and wherein designed probe has short and smallly, is convenient to characteristics such as maintenance, storage and transportation; Its manufacturing process is simple, and cost is low, is beneficial to widespread use and popularization; Its time of finishing single measurement is no more than 2 minutes, can reduce the difficulty and the cost of offshore operation.
Above-mentioned purpose of the present invention is realized by following technical scheme, developed a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system, described in-situ measurement system, it comprises, measuring sonde, attitude detection circuit, the thermal pulse energizing circuit, temperature collection circuit, CPU, I/O and storer.Described measurement mechanism comprises:
A. memory storage, be used for acceleration and obliquity and attitude information in the attitude detection circuit inductance of described storer storage measuring sonde, measuring sonde inserts the temperature-temporal information responded to behind the sediment and the computer dependent program that finally calculates thermal conductivity data;
B. input media, be used for the initialization of measuring sonde, the input initial parameter, i.e. thermal pulse width, thermal pulse intensity, the sampling rate of temperature collection circuit and the effective angle of incidence of attitude detection circuit of input measurement probe thermal excitation circuit, these initializing set parameters;
C. pick-up unit is used for detecting in real time the state and the beginning opportunity of judging thermal excitation and temperature acquisition of the measuring sonde course of work, and is used for the time that the control survey probe is carried out thermal excitation and temperature signal collection;
D. calculation element is used for the related data parameter storing, import and detect based on memory storage, input media and pick-up unit, judges the validity of temperature acquisition process, reads the record of temperature and time then, generates series of temperature-time discrete point; Thermal pulse intensity and thermal pulse width parameter during again according to the input media initialization carry out match to these discrete points according to theoretical curve and make up temperature-time curve, and the temperature maximum of T that finds
mTime t with the appearance of temperature maximal value
m, then according to formula k=0.029275 * Q/ (T
mt
m) calculate thermal source sedimental thermal conductivity on every side, and this thermal conductivity data is stored in the storer;
E. output unit is used for exporting on the hard disk of external correlation computer based on the thermal conductivity data that is stored in status information data, temperature-time data and measurement in the storer; So that above-mentioned data are shown and playback, and measure and finish.
Described measuring sonde, it comprises gas-tight silo and probe, holds row level with both hands at one of cylinder gas-tight silo and is installed with two probes: one is the thermal source probe, and one is the temperature-sensitive probe; Described thermal source probe, it is to be supported with the thermal source heating wire by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, this heating wire is electrically connected in the thermal excitation circuit of measurement mechanism by lead; Described temperature-sensitive probe, it is to be supported with thermistor by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, this thermistor is electrically connected in the temperature collection circuit of measurement mechanism by lead; In the gas-tight silo stage casing measurement mechanism is set.
Described thermal source probe, the thermal source heating wire that it is provided with in this stainless-steel tube is at least the heating wire in two loops, and wherein the heating wire length in single loop slightly equals the length of this probe.
Described temperature-sensitive probe, its thermistor that is provided with in this stainless-steel tube is the high-sensitivity miniature bead thermistor, this thermistor is positioned at the stage casing of this stainless-steel tube inner probe tube.
Described measuring sonde, it is equipped on the load-carrying steel lance, promptly is installed with a plurality of outriggers on this lance outer wall, and clamping has this probe on this support; Arrange with a plurality of these supports and probe thereof or along the equidistant axial screw of lance outer wall and to be provided with.
Measurement mechanism of the present invention has following technique effect:
The temperature of because measuring sonde of the present invention---its temperature sensor senses and record satisfies the variation tendency shown in the curve of Fig. 1 over time, promptly at t
mConstantly, temperature reaches maximum of T
mFor predetermined heat source strength Q, as long as according to T
mAnd t
m, can utilize following (1) expression formula to calculate the thermal conductivity of thermal source surrounding medium, realized the in site measurement of seabed thermal conductivity fully.
k＝0.029275×Q/(T
mt
m) (1)
Owing in gas-tight silo, be provided with the measurement mechanism of computer program control; When inserting two probes in the sediment, thermal excitation circuit control by measurement mechanism is carried out the short time heating power to the thermal source heating wire, thermistor writes down sedimental temperature variation by the temperature collection circuit of measurement mechanism simultaneously, and measurement mechanism just can calculate sedimental thermal conductivity according to time and amplitude that the temperature maximal value occurs then.Measurement mechanism of the present invention can be worked under the original position state of seabed automatically, only need carry out initial work to measuring sonde before measurement; This measurement mechanism adopts filtering, high-order A/D conversion and complicated temperature transition algorithm, has improved the measuring accuracy of thermal conductivity.Because it is very short that the required time appears in the temperature maximal value, therefore begin to excite from the measuring sonde thermal pulse, dispose to temperature signal collection, only need 1～2 minute, thereby significantly reduced the time of seabed operation, improved surveying work efficient.
Owing to be installed with two probes that spacing is fixed, is arranged in parallel in the measuring sonde: one is the thermal source probe, and one is the temperature-sensitive probe; Described thermal source probe, it is to be supported with the thermal source heating wire by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, this heating wire is electrically connected in the heat emission circuit by lead; Described temperature-sensitive probe, it is to be supported with thermistor by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, this thermistor is electrically connected in the temperature receiving circuit by lead; Because this probe structurally is divided into two parts: probe portion and gas-tight silo part, therefore, it is simple in structure, and is not high to manufacture process requirement, and volume is little, in light weight, is convenient to transportation and laboratory storage.Measuring sonde purposes of the present invention is many: except that being used for that the thermal conductivity of oceanic sediment is carried out the in site measurement, its single probe can also be used for the thermal conductivity of experiments of measuring chamber sample.
Description of drawings
Fig. 1 is the outer temperature of the instantaneous wire thermal source of endless that makes up according to a measuring principle of the present invention curve over time.
Fig. 2 is the work main flow chart of this measurement mechanism.
Fig. 3 is the functional-block diagram of this measurement mechanism control embodiment.
Fig. 4 is the structural representation of thermal conductivity in-situ probe.
Fig. 5 is the steel lance structural representation that is used to carry measuring sonde.
Embodiment
Embodiments of the invention further specify as follows in conjunction with the accompanying drawings:
Referring to Fig. 1-2, a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of the present invention's development, described in-situ measurement system, it comprises, measuring sonde, attitude detection circuit, thermal pulse energizing circuit, temperature collection circuit, CPU, I/O and storer (EEPROM).Described measurement mechanism comprises:
A. memory storage, be used for acceleration and obliquity and attitude information in the attitude detection circuit inductance of described storer (EEPROM) storage measuring sonde, measuring sonde inserts the temperature-temporal information responded to behind the sediment and the computer dependent program that finally calculates thermal conductivity data;
B. input media, be used for the MCU initialization of measuring sonde, the input initial parameter, i.e. thermal pulse width, thermal pulse intensity, the sampling rate of temperature collection circuit and the effective angle of incidence of attitude detection circuit of input measurement probe thermal excitation circuit, these initializing set parameters;
C. pick-up unit is used for detecting in real time the state and the beginning opportunity of judging thermal excitation and temperature acquisition of the measuring sonde course of work, and is used for the time that the control survey probe is carried out thermal excitation and temperature signal collection;
D. calculation element is used for the related data parameter storing, import and detect based on memory storage, input media and pick-up unit, judges the validity of temperature acquisition process, reads the record of temperature and time then, generates series of temperature-time discrete point; Thermal pulse intensity and thermal pulse width parameter during again according to the input media initialization carry out match to these discrete points according to theoretical curve and make up temperature-time curve (referring to Fig. 1), and the temperature maximum of T that finds
mTime t with the appearance of temperature maximal value
m, then according to formula k=0.029275 * Q/ (T
mt
m) calculate thermal source sedimental thermal conductivity on every side, and this thermal conductivity data is stored in the storer (EEPROM);
E. output unit is used for exporting on the hard disk of external correlation computer based on the thermal conductivity data that is stored in status information data, temperature-time data and measurement in the storer (EEPROM); So that above-mentioned data are shown and playback, and measure and finish.
A kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of the present invention's development, finish the thermal conductivity of target referring to the work main flow of Fig. 2 and measure:
The measuring sonde initialization procedure: promptly the MCU of measuring sonde inside is connected with exterior PC by usb circuit, and sends instruction by PC to MCU, obtains the process of the required every initial parameter of instrument work to realize MCU.At PC with before MCU communicates by letter, must be to baud rate, data bit, check bit, have communications protocol such as no parity to design.The initialized process of MCU is: MCU powers on and waits for that PC sends initialization directive, PC sends initialization directive and initial parameter by control program, initial parameter comprises thermal pulse intensity, thermal pulse width, sampling rate, maximum effective angle of incidence etc., MCU receives these instructions and parameter, after verification is errorless, return PC initialization success information, and the work of beginning attitude detection.
The attitude detection process: after the MCU initialization success of measuring sonde inside, the attitude detection process begins, and lasts till that always this measurement finishes.MCU receives the signal from the attitude detection circuit, judges the state of probe by the combination at acceleration and inclination angle, and MCU distributes certain storage space, and real-time storage measuring sonde state over time.Attitude detection is used for determining that thermal pulse excites the work opportunity with temperature acquisition, have only when acceleration to be zero and to be in negative edge, and the inclination angle import when being not more than initialization maximum effective angle of incidence the time MCU just begin to control exciting and selection of temperature signal of thermal pulse.
Initialized measuring sonde is installed in respectively on the support of steel lance, this steel lance drives the measuring sonde entry under the traction of wirerope on the surveying vessel, and finally drives in the measuring sonde insertion sediment.This moment, MCU detected the condition that the measuring sonde state satisfies further work, therefore began exciting of thermal pulse, and the simultaneous temperature acquisition system is started working.
Thermal pulse excites: thermal pulse intensity that the MCU of measuring sonde inside imports during according to initialization and width parameter carry out thermal pulse and excite, the thermal pulse energizing circuit is communicated with, being communicated with the duration is the thermal pulse width of initial setting, and the thermal pulse energizing circuit ends then.
Temperature signal collection: when thermal pulse began to excite, temperature acquisition system was started working.Sampling rate according to the initialization input is carried out temperature signal collection.Resistance variations from thermistor transfers voltage signal to through thermometric conversion electric bridge, after the A/D conversion, carries out filtering by specific filtering algorithm, and the typical curve that dispatches from the factory according to thermistor is scaled temperature signal then.
Data storage: MCU the temperature signal real-time storage of attitude signal and collection in storer.
The computation process of thermal conductivity: this process can be finished by MCU, also can after importing temperature-time keeping, finish by the program among the PC, both do not have difference on algorithm, but the angle from reducing the MCU computational load and reducing the measuring system power consumption, advise that this process finished by the program on the PC.It below only is the principle of work that example illustrates this process with MCU.Attitude information when MCU reads opening entry from storer judges that the temperature acquisition process is effective.Read thermograph and writing time then, form series of temperature-time discrete point.Thermal pulse intensity during according to initialization and thermal pulse width parameter, these discrete points are carried out match according to theoretical curve, find the maximal value of matched curve and the time that maximal value occurs, calculate thermal conductivity according to formula (1) then, and heat conductivity value is stored in the storer.
After above process is finished, pack up wirerope on the surveying vessel, wirerope drives lance and measuring sonde leaves sediment, and this moment, MCU no longer satisfied condition of work by the attitude detection electric circuit inspection to the probe state, so stop temperature acquisition.Measuring sonde is got back on the surveying vessel under the wirerope traction.
Data derive process: measuring sonde is got back on the surveying vessel, unload measuring sonde, be connected to PC by usb circuit, PC sends the data importing instruction, MCU receives instruction, the thermal conductivity result data of from storer, reading status information record, temperature-time keeping and calculating, and transfer back among the PC, software among the PC is to above-mentioned record and the result shows and playback, and whole measuring process finishes.
Referring to Fig. 3, Fig. 4, measuring sonde 1,2,3 of the present invention structurally comprises three parts, is respectively thermal source probe 1, temperature-sensitive probe 2 and gas-tight silo 3.Hold row level with both hands at one of cylinder gas-tight silo 3 and be installed with two probes: one is temperature-sensitive probe 2 for 1, one of thermal source probe; Described thermal source probe 1 is a stainless-steel tube, end sealing, and the other end is installed on the gas-tight silo 3.This probe 1 external diameter is not more than 1mm, and length is not less than 20mm.At least two loops of a diameter less than nickel-chrome heating wire 4 formations of 0.15mm are arranged, so that after energising, send enough heats in this probe 1.The length in this single loop and probe 1 length are about equally; This heating wire 4 links to each other with thermal excitation circuit 26 in the gas-tight silo 3 by lead 5.Insulating material 7 fillings by high heat conductance between this heating wire 4 and lead 5 and this probe 1 inwall are being supported, for example a kind of 3415Q type insulating heat-conductive glue, and its thermal conductivity can reach 1.2mW/m
2, make the heat that sends to pass to sediment fast.This heating wire 4 is electrically connected in the thermal excitation circuit 26 by lead 5; Described temperature-sensitive probe 2 also is the stainless-steel tube of end sealing, and the other end is installed on the gas-tight silo 3.These probe 2 external diameters are not more than 1mm, with thermal source probe 1 parallel to each other, equal in length, between the two apart from being not more than 10mm.A highly sensitive miniature bead thermistor 8 is arranged in this temperature-sensitive probe 2, as a kind of 111-303EAK-B01 type thermistor, the only about 0.35mm of its diameter, and have ultrafast time response.Thermistor 8 links to each other with temperature collection circuit 27 in the gas-tight silo 3 by lead 9.Described thermistor 8 is positioned at probe 2 stage casings, to weaken the influence of heat conduction edge effect.Have insulating material 10 fillings of high heat conductance supporting between this thermistor 8 and lead 9 and probe 2 inwalls, for example a kind of 3415Q type insulating heat-conductive glue makes thermistor 8 can in time sense sedimental temperature variation.
In gas-tight silo 3, be provided with thermal excitation circuit 26, the measurement mechanism 6 that temperature collection circuit 27 and governor circuit 28 are formed, the usb 11 of this measurement mechanism 6 makes measurement mechanism 6 to communicate easily by usb 11 and outer computer (PC) by the lead 12 external other ends at cylinder gas-tight silo 3.The end that gas-tight silo 3 has usb 11 has spiral cover sealing 13, and probe screws on capping 13 with protection usb 11 when idle.Gas-tight silo 3 external diameters are 15～25mm, length 100～120mm.Gas-tight silo 3 inside comprise three parts: near sound end is a right cylinder stopper 14, is used to separate probe 1,2 and gas-tight silo 3.Between external usb 11 and measurement mechanism 6, also be provided with battery box 15 in the gas-tight silo 3.This battery box 15 is connected to measurement mechanism 6 by lead 16, and circuit running and the required electric energy of heating wire 4 heatings are provided.
Referring to Fig. 5, the described single measuring sonde 32 that includes gas-tight silo 3 and two probes 1,2, it is equipped on the steel lance 30 of bringing onto load 29.Promptly be installed with a plurality of outriggers 31 on these lance 30 outer walls, clamping has this probe 32 on this support 31, with a plurality of these supports 31 and pop one's head in and 32 arrange along the equidistant axial screw of lance outer wall and to be provided with.Because single measuring sonde 32 is installed in respectively on the support 31 of detector lance 30, therefore the traction of wirerope 34 aboard ship of this support 31 drives measuring sonde 32 entry down, and finally drive in the measuring sonde 32 insertion sediments 33, satisfy the condition of further work this moment when measuring sonde 32 states, just begin exciting of thermal pulse, the simultaneous temperature acquisition system begins surveying work.
The control structural relation of the measurement mechanism 6 of this probe as shown in Figure 3.It comprises three parts: governor circuit 28, thermal excitation circuit 27 and temperature collection circuit 26.Described governor circuit 28 comprises 17, one storeies of a microprocessor (MCU) (EEPROM) 18, clock circuit (CLOCK) 22, usb circuit 29 and the attitude detection circuit of being made up of signal condition chip (SCC1) 21 and attitude sensor 25.Annexation wherein is: be connected with the microprocessor 17 of storer 18, clock circuit 22 and usb circuit 29 respectively, this microprocessor 17 is also connecting the attitude detection circuit of being made up of signal condition chip (SCC1) 21 and attitude sensor 25; This microprocessor 17 also is electrically connected on thermal excitation circuit 26 and temperature collection circuit 27 respectively.Wherein, microprocessor 17 adopts MSC1210 type single-chip microcomputer, built-in 24 low merit ∑s-Δ ADC front end signal modulate circuit-multiway analog switch, and integrated peripheral hardware on high-performance 8051 processor cores, Flash storer and the multi-discs such as 32 bit accumulators, compatible SPI serial ports is very suitable for the measuring system that volume is little, low in energy consumption, integrated level is high and precision is high.Storer 18 adopts AT24C512 type serial Flash storer, makes full use of few, low in energy consumption, the capacious advantage of its pin that has, and can be microprocessor 17 data space is provided.Clock circuit 22 adopts DS1302 type real-time clock control chips, for the collection of the connected sum temperature data of thermal excitation circuit provides timing.In the attitude detection circuit, adopt ADIS16201 type attitude sensor, attitude informations such as acceleration that can receiving transducer and inclination angle, through sending into microprocessor 17 after signal condition chip (SCC1) 21 processing, to determine whether connecting thermal excitation circuit 26 and temperature collection circuits 27 by microprocessor 17.Described thermal pulse energizing circuit 26, it comprises special-purpose constant voltage source (CVS) 20 and the pulse excitation module (PTM) 24 thereof that connects successively.Described temperature collection circuit 27, it is made up of thermometric conversion electric bridge (TCB) 23 and the signal condition chip (SCC2) 19 that connect successively.It comprises special-purpose constant voltage source (CVS) 20 and and the pulse excitation module (PTM) 24 thereof that connects successively described thermal excitation circuit 26.When microprocessor 17 is confirmed to excite thermal source by the attitude detection circuit, connect constant voltage source (CVS) 20, electric current passages through which vital energy circulates impulse is sent out and is become controllable pulse after module (PTM) 24 is reconciled, through lead 5, discharge heat energy by heating wire 4, and be delivered to rapidly in the sediment 33.The thermal pulse width is determined by the initial input parameter of storage in the microprocessor 17.Described temperature receiving circuit 27 is made up of thermometric conversion electric bridge (TCB) 23 and the signal condition chip (SCC2) 19 that connect successively.When sediment 33 temperature change, the resistance of thermistor 8 correspondingly changes, be converted to voltage signal through thermometric conversion electric bridge (TCB) 23, then through signal condition chip (SCC2) 19, in microprocessor 17, become discernible digital signal and be scaled temperature value, in storer (EEPROM) 18, store.
Those of ordinary skill in the art can understand, and in protection scope of the present invention, makes amendment for the foregoing description, and it all is possible adding and replacing, and it does not all exceed protection scope of the present invention.
Claims (5)
1, a kind of measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system, described in-situ measurement system, it comprises, measuring sonde, the attitude detection circuit, the thermal pulse energizing circuit, temperature collection circuit, CPU, I/O and storer, it is characterized in that described measurement mechanism is located in the described measuring sonde, described measurement mechanism comprises:
A. memory storage, be used for acceleration and obliquity and attitude information in the attitude detection circuit inductance of described storer storage measuring sonde, measuring sonde inserts the temperature-temporal information responded to behind the sediment and the computer dependent program that finally calculates thermal conductivity data;
B. input media is used for the initialization of measuring sonde, input initial parameter, the i.e. sampling rate of the thermal pulse width of measuring sonde thermal excitation circuit, thermal pulse intensity, temperature collection circuit and the effective angle of incidence of attitude detection circuit, these initializing set parameters;
C. pick-up unit is used for detecting in real time the state and the beginning opportunity of judging thermal excitation and temperature acquisition of the measuring sonde course of work, and is used for the time that the control survey probe is carried out thermal excitation and temperature signal collection;
D. calculation element is used for the related data parameter storing, import and detect based on memory storage, input media and pick-up unit, judges the validity of temperature acquisition process, reads the record of temperature and time then, generates series of temperature-time discrete point; Thermal pulse intensity Q and thermal pulse width parameter during again according to the input media initialization carry out match to these discrete points according to theoretical curve and make up temperature-time curve, and find the temperature maximum of T
mAnd time corresponding t
m, then according to formula k=0.029275 * Q/ (T
mt
m) calculate thermal source sedimental thermal conductivity on every side, and this thermal conductivity data is stored in the storer;
E. output unit is used for exporting on the hard disk of external correlation computer based on the thermal conductivity data that is stored in status information data, temperature-time data and measurement in the storer; So that above-mentioned data are shown and playback, and measure and finish.
2, according to the described measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of claim 1, it is characterized in that: described measuring sonde, it comprises gas-tight silo and probe, holds row level with both hands at one of cylinder gas-tight silo and is installed with two probes: one is the thermal source probe, and one is the temperature-sensitive probe; Described thermal source probe is to be supported with the thermal source heating wire by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, and this heating wire is electrically connected in the thermal excitation circuit of measurement mechanism by lead; Described temperature-sensitive probe is to be supported with thermistor by the filling of high heat conductive insulating material in the stainless-steel tube that at one end seals, and this thermistor is electrically connected in the temperature collection circuit by lead.
3, according to the described measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of claim 2, it is characterized in that: described thermal source probe, the thermal source heating wire that it is provided with in this stainless-steel tube is at least the heating wire in two loops, and wherein the heating wire length in single loop is substantially equal to the length of this probe.
4, according to the described measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of claim 2, it is characterized in that: described temperature-sensitive probe, its thermistor that is provided with in this stainless-steel tube is the high-sensitivity miniature bead thermistor, and this thermistor is positioned at the stage casing of this stainless-steel tube.
5, according to each described measurement mechanism that is used for the oceanic sediment thermal conductivity in-situ system of claim 1-4, it is characterized in that: described measuring sonde is equipped on the load-carrying steel lance, promptly being installed with a plurality of clampings on this lance outer wall has the probe outrigger, and the equidistant axial screw shape of each support is arranged in the lance outer wall.
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| 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 |
| CN104713904B (en) * | 2015-03-30 | 2016-01-13 | 中国科学院南海海洋研究所 | The calculation method of a kind of seabed in-situ heat conductance |
| CN106248521B (en) * | 2016-07-11 | 2018-06-22 | 中国环境科学研究院 | The hot identification method of Organic Matter In Sediments early diagenesis evolution grade |
| CN106442616A (en) * | 2016-10-08 | 2017-02-22 | 中国科学院南京地理与湖泊研究所 | Lake water and deposit heat exchange in-situ observation device and method |
| CN106814022B (en) * | 2017-03-31 | 2023-04-14 | 西安科技大学 | Shallow buried depth coal seam mining unconsolidated formation infiltration rate change measuring device |
| CN107966471B (en) * | 2017-11-14 | 2020-01-31 | 东南大学 | in-situ testing device and testing method for soil body thermal conductivity and geothermal gradient |
| CN114199935B (en) * | 2021-12-28 | 2024-02-09 | 浙江大学 | Ocean sediment heat conductivity coefficient measuring method and device |
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