CN102331275A - Penetration probe-based deep sea multi-element comprehensive observation system - Google Patents
Penetration probe-based deep sea multi-element comprehensive observation system Download PDFInfo
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- CN102331275A CN102331275A CN201110155700A CN201110155700A CN102331275A CN 102331275 A CN102331275 A CN 102331275A CN 201110155700 A CN201110155700 A CN 201110155700A CN 201110155700 A CN201110155700 A CN 201110155700A CN 102331275 A CN102331275 A CN 102331275A
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Abstract
The invention discloses a penetration probe-based deep sea multi-element comprehensive observation system, which comprises an upper computer and a data recovery cabin, wherein the upper end and the lower end of the data recovery cabin are connected with a probe rod through a hydraulic separation releaser and a launching device respectively; a small-sized pile driver is arranged in the launching device; the launching device is provided with an underwater search light, an underwater camera and an underwater acoustic communication transceiver; the top of the data recovery cabin is provided with a floating body; a central controller is included in the data recovery cabin; the outer side face of the data recovery cabin is provided with an underwater acoustic transducer; and the outer surface of the probe rod is provided with more than 10 annular electrodes and more than 2 pore water pressure sensors which are connected with the central controller. The system has a simple structure, is reliable in work and accurate in control, can carry various sensors and adapt to a deep sea high pressure environment, and can synchronously and automatically observe and record states and changes of sea water and sediments within a 10m depth range close to a sea water-sediment interface with over 2,000m water depth, including the state of sediments of 6-7m below a sea bottom surface, the condition of sea water of a bottom layer of 3-4m above the sea bottom surface and the dynamic change in position of the sea bottom surface.
Description
Technical field
The present invention relates to a kind of deep-sea many key elements Integrated Observation System, be used for the observation of the dynamic changing process of deep sea water and sediment interaction band, belong to the ocean observation technology field based on the penetration type probe.
Background technology
Seabed, deep-sea modern process original position is long-term, continuous, ocean weather station observation; It is the important means that Marine Sciences march to the deep-sea; Particularly deep sea water and sediment interact to drive the observation of attitude change procedure, for disclosing recent sediment takes place under the dynamic action of deep-sea dynamic response process, deeply being familiar with pelagic deposit filling evolution history and having vital role.At present, for the method for the on-the-spot original position long-term observation in seabed, deep-sea, one type is the seat bottom type tripod in the world; Fixing test sensor on it; Another kind of is penetration type seabed probe (bar), under the injection seabed in the certain depth sediment, and sensor installation in the probe (bar).The tripod recording geometry can only be carried out the observation of above seawater hydrologic condition in sediment interface and suspension bed sediment characteristic; Penetration type seabed probe (bar) then more lays particular emphasis on measures the variation that depositing process is corroded at bottom sediment interface; In addition; Seabed resistivity observation feeler lever; Be very promising observation method, set up the relation between good resistivity value and seawater outstanding husky concentration, seawater-sediment interface and the sediment physico-mechanical properties at present, have vital role for the outstanding husky concentration in grasp seabed, scene, seawater-sediment interface and sediment state and variation.But existing probe (bar) observation method all is limited to deep water offshore, and lays particular emphasis on the observation of single environment key element more.A kind of recording geometry that can observe multiple environmental element that can be used in the deep-sea is not arranged at present as yet.
Summary of the invention
The object of the present invention is to provide a kind of deep-sea many key elements Integrated Observation System, to overcome the deficiency of prior art based on the penetration type probe.
The present invention can adapt to the hyperbaric environment of the deep-sea 2000m depth of water; Can realize the up and down synchronous automatic observational record of seawater and sediment state and the variation of 10m depth range of deep sea water-sediment interface; The observation content comprises 6 ~ 7m sediment state under the sea bottom surface; Be sediment physico-mechanical properties, the accumulation of sediment excess pore water pressure and evanishment, 3 ~ 4m bottom seawater situation on the sea bottom surface, i.e. seawater pressure, bottom current flow velocity, turbidity of sea water, seawater suspension bed sediment concentration; And the dynamic change of sea bottom surface position, promptly sea bottom surface corrodes and alluvial speed.
Deep-sea many key elements Integrated Observation System based on the penetration type probe; Comprise the host computer that the water surface is above; With the feeler lever below the water surface, it is characterized in that also comprising data recovery bin that is arranged on said feeler lever upper end and the device that lays that is arranged on this data recovery bin upper end; The described device that lays comprises that the top is provided with the pressure hull of suspension ring; Pressure hull inside is provided with the small-sized hydraulic ram engine by the control of piling controller; Pressure hull is provided with searchlight, Underwater Camera and underwater sound communication receiving/transmission device under water outward, and the bottom is connected with the data recovery bin via hydraulic pressure separation release; Described data recovery bin comprises that the top is provided with the pressure hull of buoyancy aid; The central controller that this pressure hull inside is provided with; Lateral surface is provided with the underwater acoustic transducer that links to each other with central controller; The bottom is separated release via hydraulic pressure and is connected with the top of feeler lever, and this data recovery bin carries out circuit via underwater connector and feeler lever and is connected; Need not circuit with data recovery bin and feeler lever and be connected and lay device; Described feeler lever outside surface is provided with equally spaced 10 above ring electrodes and 2 above pore water pressure sensors; All ring electrodes and pore water pressure sensor link to each other with underwater connector via the inner universal serial bus of feeler lever, then with the data recovery bin in central controller link to each other.
Need not to insert the seabed owing to be arranged on the data recovery bin of feeler lever upper end; Can carry the sensor that to measure multiple ocean wave parameter so the data recovery bin is outer; Also can be provided with turbidity transducer, temperature sensor, attitude sensor and current meter like the data recovery bin, and all link to each other with central controller through universal serial bus.
Consider watertightness and insulation effect, above-mentioned data recovery bin is inner to adopt epoxy sealing and fixing internal central controller and system's universal serial bus.
Above-mentioned feeler lever is that the bottom has the nylon tube of conehead, and this conehead is with tantalum carbide, or hafnium carbide, or titanium carbide is processed.
In order to match with buoyancy aid, increase the effect of throwing in stability and injection seabed, above-mentioned feeler lever top symmetry be provided with balancing weight, can keep the underwater attitude of instrument.
Consider watertightness and insulation effect, the epoxy resin embedding is used in above-mentioned feeler lever inside.
The above-mentioned device that lays also can be provided with the protection framework, and with searchlight and Underwater Camera are placed in the protection framework under water.Above-mentioned data recovery capsule also can be provided with the protection framework, and the buoyancy aid 26 on data recovery bin top is placed in the protection framework with current meter.
The central controller of above-mentioned data recovery bin comprises the single-chip microcomputer that is connected with power management module, data memory module, real-time clock, acoustics MODEM and system's universal serial bus respectively; Single-chip microcomputer links to each other with sensing control unit in each sensor through system's universal serial bus, and the data of controlling and gathering each sensor.
Described acoustics MODEM is used for carrying out communication with host computer, is supplied power to each sensor groups by the Single-chip Controlling power management module.
Sensing control unit in the sensor comprise temperature measurement unit, turbidimetry unit, ocean current measurement unit, attitude measurement unit, with feeler lever on the corresponding resistivity measurement of ring electrode quantity unit, and the pore water pressure measuring unit that equates with pore water pressure sensor quantity on the feeler lever.
The signal of above-mentioned each pore water pressure sensor output is through matrix switch and system's universal serial bus input single-chip microcomputer.
The simulating signal of each ring electrode output on the above-mentioned resistivity measurement unit is input to the signal condition module through the chess matrix analogue switch, and conditioned signal always is input to single-chip microcomputer through system's serial.Analog signals'digitalization is accomplished by the analog-to-digital conversion device that single-chip microcomputer carries; Resolution is 12Bits; The dynamic range that 3 magnitudes are arranged; According to the resistivity value that records, select for use the interface decision model and the inverting function that are suitable for the observation area sediment type can obtain seawater-sediment interface, seawater suspension bed sediment concentration and marine bottom sediment state parameter and variation.
Described host computer is used for the data recovery bin and lays device carrying out data communication and data analysis; Comprise the single-chip microcomputer that is connected with external interface, power management module, data memory module, real-time clock and acoustics MODEM respectively.Host computer can adopt the 16Bit single-chip microcomputer, and 9600 baud rate acoustics MODEM, data memory module adopt 16GBytes MicroSD card, and real-time clock adopts the high precision real-time timepiece chip, and external interface adopts RS232, RS422/485, USB and wireless mode.
The present invention is simple in structure, reliable operation, precise control, can carry multiple sensors, can adapt to deep-sea 2000m depth of water hyperbaric environment.Can carry out observational record automatically synchronously near the seawater of the 10m depth range sea-sediment interface more than the depth of water 2000m and sediment state and variation, comprise under the sea bottom surface 3 ~ 4m bottom seawater situation on 6 ~ 7m sediment state, the sea bottom surface, and the dynamic change of sea bottom surface position.
The module that lays of the present invention has underwater camera system and small-sized hydraulic ram engine; Not only can upload instrument attitude, depth information; The operation conditions of system in the process of laying is in time controlled; The effective difficulty of lowering apparatus injection predetermined depth in the sediment and improve injection speed can avoid laying losing and damaging of unsuccessful instrument simultaneously.Data recovery bin top is provided with floating body material, matches with the feeler lever counterweight, can effectively keep the underwater attitude of instrument; In addition, after the observation time of setting finished, the data recovery bin can separate with feeler lever, in water, floats naturally to the water surface, reports self GPS locating information, helped observation data and reclaimed.Feeler lever ring electrode structure and measuring unit have been taken into account the consideration of high measurement efficient and low energy consumption two aspects, and in addition, the selection of encapsulant makes it can be applicable to the observation of long deep-sea.The design of electronic system had both taken into account the terseness of low-power consumption and system, had guaranteed enough performances again, and the system communication mode is simple, efficient, stability is high.The electronic system of underwater units adopts system's universal serial bus, can significantly reduce the consumption and the system complex degree of cable, also reduces machinery, waterproofing design difficulty, increases security of system.
Description of drawings
Fig. 1 is a general structure synoptic diagram of the present invention.
Fig. 2 is the decomposition texture synoptic diagram of feeler lever of the present invention and data recovery bin.
Fig. 3 is data recovery bin of the present invention and the decomposition texture synoptic diagram that lays device.
Fig. 4 is the structural representation of host computer of the present invention.
Fig. 5 is the structural representation of central controller of the present invention.
Fig. 6 is a pore water pressure sensor cellular construction synoptic diagram of the present invention.
Fig. 7 is a resistivity sensor cellular construction synoptic diagram of the present invention.
Wherein, 1, host computer, 2, lay device, 3, the data recovery bin, 4, feeler lever, 5, suspension ring; 6, piling controller, 7, pressure hull, 8, the small-sized hydraulic ram engine, 9, the protection framework, 10, searchlight under water, 11, the protection framework; 12, underwater acoustic transducer, 13, central controller, 14, hydraulic pressure separates release, 15, underwater connector, 16, counterweight, 17, system's universal serial bus; 18, nylon tube, 19, ring electrode, 20, pore water pressure sensor, 21, conehead, 22, pressure hull, 23, turbidity transducer; 24, temperature sensor, 25, attitude sensor, 26, floating body material, 27, current meter, 28, Underwater Camera, 29, underwater sound communication receiving/transmission device; 30, single-chip microcomputer, 31, external interface, 32, power management, 33, data storage, 34, real-time clock; 35, acoustics MODEM, 36, acoustics MODEM, 37, power management module, 38, real-time clock, 39, single-chip microcomputer; 40, resistivity measurement unit, 41, the pore water pressure measuring unit, 42, temperature measurement unit, 43, the turbidimetry unit, 44, the ocean current measurement unit; 45, attitude measurement unit, 46, data memory module, 47, matrix switch, 48, the chess matrix analogue switch, 49, the signal condition module.
Embodiment
Shown in Fig. 1～3; Based on deep-sea many key elements Integrated Observation System of penetration type probe, comprise host computer 1 and the following feeler lever 4 of the water surface that the water surface is above; What it is characterized in that also comprising the data recovery bin 3 that is arranged on said feeler lever 4 upper ends and be arranged on these data recovery bin 3 upper ends lays device 2; The described device 2 that lays comprises that the top is provided with the pressure hull 7 of suspension ring 5; Pressure hull inside is provided with the small-sized hydraulic ram engine 8 by 6 controls of piling controller; Be provided with searchlight 10, Underwater Camera 28 and underwater sound communication receiving/transmission device 29 under water outside the pressure hull 7, and the bottom is connected with data recovery bin 3 via hydraulic pressure separation release 14; Described data recovery bin 3 comprises that the top is provided with the pressure hull 22 of buoyancy aid 26; The central controller 13 that these pressure hull 22 inside are provided with; Lateral surface is provided with the underwater acoustic transducer 12 that links to each other with central controller 13; The bottom is separated release 14 via hydraulic pressure and is connected with the top of feeler lever 4, and this data recovery bin 3 carries out circuit via underwater connector 15 with feeler lever 4 and is connected; Need not circuit with data recovery bin 3 and feeler lever 4 and be connected and lay device 2; Described feeler lever 4 outside surfaces are provided with equally spaced 10 above ring electrodes 19 and 2 above pore water pressure sensors 20; All ring electrodes 19 link to each other with underwater connector 15 via feeler lever 4 inner universal serial bus 17 with pore water pressure sensor 20, then link to each other with data recovery bin 3 interior central controllers 13.
Need not to insert the seabed owing to be arranged on the data recovery bin 3 of feeler lever 4 upper ends; So can carry the sensor that to measure multiple ocean wave parameter outside the data recovery bin 3; Also can be provided with turbidity transducer 23, temperature sensor 24, attitude sensor 25 and current meter 27 like data recovery bin 3, and all link to each other with central controller 13 through universal serial bus 17.
Consider watertightness and insulation effect, epoxy sealings are adopted and fixing internal central controller 13 and system's universal serial bus 17 in above-mentioned data recovery bin 3 inside.
Above-mentioned feeler lever 4 is that the bottom has the nylon tube of conehead 21, and this conehead 21 is with tantalum carbide, or hafnium carbide, or titanium carbide is processed.
Shown in Fig. 1～3, in order to match, increase the effect of throwing in stability and injection seabed with buoyancy aid 26, above-mentioned feeler lever 4 tops symmetry be provided with balancing weight 16, can keep the underwater attitude of instrument.
Consider watertightness and insulation effect, the epoxy resin embedding is used in above-mentioned feeler lever 4 inside.
Shown in Fig. 1～3, the above-mentioned device 2 that lays also can be provided with protection framework 9, and searchlight 10 is placed in the protection framework 9 with Underwater Camera 28 under water; Above-mentioned data recovery capsule 3 also can be provided with protection framework 11, and the buoyancy aid 26 on data recovery bin 3 tops is placed in the protection framework 11 with current meter 27.
As shown in Figure 4, described host computer 1 is used for data recovery bin 3 and lays device 2 carrying out data communication and data analysis; Comprise the single-chip microcomputer 30 that is connected with external interface 31, power management module 32, data memory module 33, real-time clock 34 and acoustics MODEM 35 respectively.Host computer 1 can adopt the 16Bit single-chip microcomputer, has both taken into account the terseness of low-power consumption and system, has guaranteed enough performances again; Acoustics MODEM 35 adopts the commercially produced product of 9600 baud rates, carries out data recovery bin 3 and lays communicating by letter of device 2 and host computer 1, and satisfy the recording geometry 2000m requirement once of communicating by letter every day under water; Data memory module adopts 16GBytes MicroSD card, on the one hand enough capacity is arranged, and the storer compatibility of standard is good on the other hand; Real-time clock 34 provides markers for the master system circuit, with synchronous with recording geometry underwater units electronic system markers, keeps the consistance of total system, adopts the high precision real-time timepiece chip, and year error is in 10s; External interface adopts RS232, RS422/485, USB and wireless mode; Power management module 32 provides the galvanic current source for the master system circuit.For satisfying the low-power consumption requirement, under the control of single-chip microcomputer 30, acoustics MODEM 35, data memory module 33 are only just supplied power when needs work.
As shown in Figure 5, the central controller 13 of above-mentioned data recovery bin 3 is responsible for the collection of sensing data, comprises the single-chip microcomputer 39 that is connected with power management module 37, data memory module 46, real-time clock 38, acoustics MODEM 36 and system's universal serial bus 17 respectively; Single-chip microcomputer 39 links to each other with sensing control unit in each sensor through system's universal serial bus 17; And the data of controlling and gathering each sensor; Be to guarantee the unification of total system, consistent in said single-chip microcomputer 39, acoustics MODEM 36, power management module 37, real-time clock 38 and data memory module 46 and the host computer electronic system.
As shown in Figure 5; Sensing control unit in the sensor comprise temperature measurement unit 42, turbidimetry unit 43, ocean current measurement unit 44, attitude measurement unit 45, with feeler lever 4 on the corresponding resistivity measurement of ring electrode 19 quantity unit 40, and the pore water pressure measuring unit 41 that equates with pore water pressure sensor 20 quantity on the feeler lever 4.
As shown in Figure 6, the signal of above-mentioned each pore water pressure sensor 20 outputs is through matrix switch 47 and system's universal serial bus 17 input single-chip microcomputers 39.Pore water pressure sensor 20 is selected business-like pressure sensor in deep-sea for use; Measure near the seawater pressure of sediment mesoporosity water pressure and sea bottom surface; Pressure sensor in deep-sea inside carries temperature sensor; Be output as force value, the pore water pressure sensor 20 that single-chip microcomputer 39 will be visited through system's universal serial bus 17 and matrix switch 47 selections, reading corresponding data through the excess temperature correction.
As shown in Figure 7, the simulating signal of each ring electrode 19 outputs on the above-mentioned resistivity measurement unit 40 is input to signal condition module 49 through chess matrix analogue switch 48, and conditioned signal is input to single-chip microcomputer 39 through system's serial total 17.The electrode ring texture can effectively increase Measurement Resolution, improves measuring accuracy.
The output signal of ring electrode 19 is a simulating signal, and the chess matrix analogue switch 48 through precision is input to signal condition module 49, because each ring electrode 19 public identical subsequent process circuits, so the measurement data high conformity.Signal condition module 49 with signal amplify, filtering, and the adjustment output resistance, with the subsequent conditioning circuit impedance matching.Analog signals'digitalization is 12Bits by the resolution that single-chip microcomputer 39 carries, and has the AD (analog-to-digital conversion device) of 3 magnitude dynamic ranges to accomplish, and the arrangement of ring electrode 19 and resistivity measurement are according to the Wenner mode; According to the resistivity value that records, select for use the interface decision model and the inverting function that are suitable for the observation area sediment type can obtain seawater-sediment interface, seawater suspension bed sediment concentration and marine bottom sediment state parameter and variation.
The course of work of the present invention is following, hangs oneself from the scientific investigation ship through capstan winch and cable and puts into the sea, or lay equipment cloth through CTD and put into sea (capstan winch, cable and the CTD equipment of laying belong to the scientific investigation ship and carries instrument); After arriving the abyssal floor bottom surface, utilize the effect of instrument deadweight and counterweight make instrument under the prerequisite that keeps attitude with certain speed injection marine bottom sediment in, do not reach predetermined depth as if injection; The running of starting small-sized hydraulic ram engine makes feeler lever injection to seabed predetermined depth, and Underwater Camera is through observation water lower device attitude; And the information of uploading is to master system; After guaranteeing operate as normal, the cloth amplification module separates to be sling, undesirable as if laying attitude; After winch or the CTD equipment of laying are mentioned on the embodiment scientific investigation ship capable of using, lay again.
Underwater units injection to seabed predetermined depth; After communication test is guaranteed operate as normal; The cloth amplification module separates to be sling, and data bins and feeler lever are according to pre-set time interval collection storage data, and data recovery bin 3 carries out circuit with feeler lever 4 use underwater connectors 15 and is connected; When observation is that feeler lever 4 provides power supply, and sends and measure instruction.
Observation finishes, and data recovery bin 3 is received underwater sound signal, and pressure hull 22 bottoms are equipped with hydraulic pressure with the coupling part of feeler lever 4 and separate release 14; Can after host computer 1 system " returns " order data recovery bin 3 be separated with bottom feeler lever 4 receiving, data recovery bin 3 density are less than water body, can in water, float naturally; In the floating-upward process; The underwater acoustic transducer 12 that is fixed in pressure hull 22 tops still can be worked, but the information of real-time report self present position also can be provided with the GPS module at data recovery bin 3 and report locating information; So that reclaim, 4 of feeler levers are thrown aside the seabed.
Embodiment
In order to make full use of existing equipment, reduce manufacturing cost and use cost, the present invention has adopted the design form that makes each parts can utilize the commercialization commercially available prod.Wherein, realize measuring the sensor of various deep-seas parameter, be the commercialization sensor like turbidity transducer 23, temperature sensor 24, attitude sensor 25, current meter 27 and pore water pressure sensor 20; Be used to lay the parts with communication, as searchlight 10, underwater acoustic transducer 12, underwater connector 15, Underwater Camera 28 are business-like commercially available prod with underwater sound communication receiving/transmission device 29 under water; It is through existing techniques in realizing hydraulic pressure separation function that the hydraulic pressure that is used to realize to reclaim function separates release 14, also can directly adopt commercially available hydraulic pressure to separate releasing means.
Lay the small-sized hydraulic ram engine 8 of device 2 set inside; Also can adopt prior art,, change the flow direction through piling controller 6 like cylindrical structural, by power-actuated small-sized hydraulic ram engine; Realize stroke and backhaul action, make ram engine performance piling function; As by the running parameter of the selected small-sized hydraulic ram engine 8 of invention being: the stroke time is 0.33s, and be 0.67s return interval, and the backhaul maximal rate is 3.94m/s, and the stroke acceleration is 242.4m/s
2
Claims (10)
1. based on deep-sea many key elements Integrated Observation System of penetration type probe; Comprise the host computer (1) that the water surface is above; With the feeler lever (4) below the water surface; What it is characterized in that also comprising the data recovery bin (3) that is arranged on said feeler lever (4) upper end and be arranged on this data recovery bin (3) upper end lays device (2); The described device (2) that lays comprises that the top is provided with the pressure hull of suspension ring (5) (7); Pressure hull inside is provided with the small-sized hydraulic ram engine (8) by piling controller (6) control; Pressure hull (7) is outer to be provided with searchlight (10), Underwater Camera (27) and underwater sound communication receiving/transmission device (28) under water, and the bottom is separated release (14) via hydraulic pressure and is connected with data recovery bin (3); Described data recovery bin (3) comprises that the top is provided with the pressure hull of buoyancy aid (26) (22); The central controller (13) that this pressure hull (22) inside is provided with; Lateral surface is provided with the underwater acoustic transducer (12) that links to each other with central controller (13); The bottom is separated release (14) via hydraulic pressure and is connected with the top of feeler lever (4), and this data recovery bin (3) carries out circuit via underwater connector (15) with feeler lever (4) and is connected; Described feeler lever (4) outside surface is provided with equally spaced 10 above ring electrodes (19) and 2 above pore water pressure sensors (20); All ring electrodes (19) link to each other with underwater connector (15) via the inner universal serial bus (17) of feeler lever (4) with pore water pressure sensor (20), then link to each other with the interior central controller (13) of data recovery bin (3).
2. recording geometry as claimed in claim 1; It is characterized in that also being provided with turbidity transducer (23), temperature sensor (24), attitude sensor (25) and current meter (27) outside the above-mentioned data recovery bin (3), and all link to each other with central controller (13) through universal serial bus (17).
3. recording geometry as claimed in claim 1 is characterized in that above-mentioned data recovery bin (3) inner employing epoxy sealing and fixing internal central controller (13) and system's universal serial bus (17).
4. recording geometry as claimed in claim 1 is characterized in that above-mentioned feeler lever (4) is that the bottom has the nylon tube of conehead (21), and this conehead (21) is with tantalum carbide, or hafnium carbide, or titanium carbide is processed.
5. recording geometry as claimed in claim 1, what it is characterized in that above-mentioned feeler lever (4) top symmetry is provided with balancing weight (16).
6. like claim 1,4 or 5 described recording geometrys, it is characterized in that above-mentioned feeler lever (4) is inner to use the epoxy resin embedding.
7. recording geometry as claimed in claim 1 is characterized in that above-mentioned central controller (13) comprises the single-chip microcomputer (40) that is connected with power management module (38), data memory module (47), real-time clock (39), acoustics MODEM (37) and system's universal serial bus (17) respectively; Single-chip microcomputer (40) links to each other with sensing control unit in each sensor through system's universal serial bus (17), and the data of controlling and gathering each sensor.
8. recording geometry as claimed in claim 7; It is characterized in that sensing control unit in the sensor comprise temperature measurement unit (43), turbidimetry unit (44), ocean current measurement unit (45), attitude measurement unit (46), with feeler lever (4) on ring electrode (19) quantity corresponding resistivity measurement unit (41), and the pore water pressure measuring unit (42) that equates with pore water pressure sensor (20) quantity on the feeler lever (4).
9. recording geometry as claimed in claim 1, the signal that it is characterized in that above-mentioned each pore water pressure sensor (20) output is through matrix switch (48) and system's universal serial bus (17) input single-chip microcomputer (40).
10. recording geometry as claimed in claim 1; The simulating signal that it is characterized in that each ring electrode (19) output on the above-mentioned resistivity measurement unit (41) is input to signal condition module (50) through chess matrix analogue switch (49), and conditioned signal is input to single-chip microcomputer (40) through system's serial total (17).
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