CN202305065U - Wireless piezomagnetic sensor for absolute measurement of crustal stress of deep well - Google Patents
Wireless piezomagnetic sensor for absolute measurement of crustal stress of deep well Download PDFInfo
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- CN202305065U CN202305065U CN2011202704379U CN201120270437U CN202305065U CN 202305065 U CN202305065 U CN 202305065U CN 2011202704379 U CN2011202704379 U CN 2011202704379U CN 201120270437 U CN201120270437 U CN 201120270437U CN 202305065 U CN202305065 U CN 202305065U
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Abstract
The utility model relates to a wireless piezomagnetic sensor for absolute measurement of a crustal stress of a deep well and belongs to the technical field of measuring devices. It is characterized in that a sensor (5) is a single-chip microprocessor AT89C55 having high performance; an AC598 is adopted for measuring the signal processing of inductance components; a digital communication module adopts an FC211AT on the market. An electric measuring part and a lithium battery for power supply are both packaged in an annular sealing space. A shell (17) of the sealing space adopts non-metal material having high strength and is in wireless digital communication connection with a controller antenna (2) in a controller (1). Two ends of the annular sealing shell (15) and a wire hole are sealed by adopting O-shaped sealing rings (14, 18). The wireless piezomagnetic sensor for the absolute measurement of the crustal stress of the deep well in the utility model not only solves a transceiving problem in wireless communication, but also enables a connection wire between a measuring component and the electric measuring part can be led in a hollow pipe, thereby solving a sealing problem under deep well water pressure well. In this way, water leakage problems in vibration in a stress relieving process and under the effect of high pressure circulating water are both eliminated. The technical scheme in the utility model can be realized perfectly.
Description
Technical field
The utility model relates to wireless deep-well terrestrial stress absolute measuring piezometric Magnetic Sensor.The technical field that belongs to measuring equipment.
Background technology
After Xingtai violent earthquake in 1966, China has begun the geostress survey research of crust deep part.Measurement contents is divided two aspects, and the one, the residual mechanical stress in the crustal rock is measured, and also claims the measurement of terrestrial stress absolute value; The 2nd, in rock-boring, lay the terrestrial stress sensor of long-term measurement, measure the relative variation of terrestrial stress.Terrestrial stress absolute value measuring method, the people claims stress-relief method in the industry, or is called the drilling hole stress restoring method.Be in complete rock, play the boring that bore is bigger earlier, up to the target rock stratum.When ROCK CONDITIONS satisfies the needs condition of stress relieving, get the conical surface with taper bit at the bottom of with the hole then, use little drill bit (D=36mm for example commonly used) to make a call to the smooth straight aperture of a section surface again.The pressure magnetic stress sensor that is exclusively used in the terrestrial stress releasing is put into aperture; Respectively to being mutually the relative aperture wall of the sensor preload on three orientation of 120 ° of angles; After accomplishing this process, bore with big drill sleeve, the core of sensor is equipped with in complete taking-up again; Again core is exerted pressure, recover its stress in the stratum.Through this process measurement data computing is handled, ask for the size and Orientation of residual mechanical stress in the rock.The operation of this process is quite complicated and difficulty, and at first we hope to overlap and write down the sensing data variation in the brill process incessantly, and sensor lead and data recording limit the application of this method always.The utility model adopts the radio electronics technology, has solved a puzzlement research work difficult problem for many years preferably.Not only make the degree of depth of stress relieving increase nearly hundred meters, and operating rate significantly improves, practice thrift a large amount of manpower and materials.In the geology monitoring in each field such as geologic hazard, mine safety, power station dam, have broad application prospects.
The utility model content
The problem that solves
The utility model technical matters to be solved is the electromechanical integration of deep-well terrestrial stress absolute value survey sensor.In loading procedure,, behind the disengaging loader, independently accomplish all measurement and stored record in the down-hole, until whole stress relieving end-of-jobs through the wireless telecommunications Data transmission.
Technical scheme
In order to reach the purpose of the utility model, the utility model is realized through following technical scheme:
The wireless deep-well terrestrial stress absolute measuring piezometric Magnetic Sensor of the utility model; Sensor 5 is high performance single chip computer AT 89C55; The inductance measuring element signal is handled and is adopted AD598, and digital communications module adopts commercially available FC211AT, wherein; Electric measurement part and power supply lithium battery all are encapsulated in the annular seal space; The shell 17 of seal cavity adopts the high nonmetallic materials of intensity, carries out radio digital communication with controller antenna 2 in the controller 1 and is connected, and the two ends of annular seal housing 15 and cable hole adopt " O " RunddichtringO 14,18 to seal.
Above-mentioned sensor 5 machineries are that upper end 90mm diameter docks with loader 3; Lower end 36mm diameter cooperates with the measurement petrosal foramen; The sensitive element 13 of three-component terrestrial stress sensor is installed in the diameter 36mm housing, each set of pieces vertical interval 23mm, and deflection differs 120 °; The outer suit ring-type electrical box 10 of 36mm housing is electric measurement communications portion and power supply lithium battery in it.
The lithium battery that the gas of can supplying power was partly worked 5 hours is housed in the above-mentioned sensor 5.
In order intactly to react in the drilling process, three orientation when core slowly peels off with country rock on the different gradients differ the different variations of 120 ° sensor stress sensitive element 13, and drilled footage is had higher requirements with the corresponding of time of recorded information.The present invention includes machinery and two parts of electronics.
Fig. 2 is the sensor mechanical structure figure of the utility model.Terrestrial stress absolute value measurement requirement measured hole is as much as possible little, to guarantee original residual mechanical stress state in the true rock.But for obtaining complete core, bore diameter is better in the core-drilling process.In addition, loader 3 is owing to reasons in structure, and diameter can not be very little.In order to solve this contradiction, loading displacement slide block 8 of increase between screw rod 7 and the push rod 9, guarantee to load screw rod 7 and push rod 9 interlocks, and changed the centre distance of push rod 9, thrust transmission in the realization minor diameter.When loading motor is rotated counterclockwise, loads screw rod 7 promotion displacement slide blocks 8 and move downward, the tapered bar 11 that drives push rod 9 and push rod 9 lower ends then moves downward; Tapered bar 11 promotes radially outwards motion of wedge block 12; Until the contact crag, make stress sensitive element 13 be in the optimum coupling pre-stressed state, otherwise; Opposite action can be laid down the load on the stress sensitive element 13.
Five figure among Fig. 4 are these novel electrical schematic diagrams, and it comprises inductance sensor, signal Processing, parts such as voltage-frequency conversion, system clock, data storage, power supply control and single-chip microcomputer frequency measurement.
With IC1AD598 is the analogue signal processor of core, accomplishes amplification, detection, the filtering of the electric pressure signal variable of measuring sensor L1, L2, L3 (L4 is vacancy in three-component is measured), eliminates and disturbs and the task of output dc voltage.It is the excellent functional integrated circuit of a processing differential transformer inductance signal performance, and we introduce its in our signal Processing of pressure magnetic stress inductance method element like a bomb, show good technical characterictic.In reality, R, C and Lx (L1, L2, L3) are for measuring an arm of bridge circuit.R, C and L0 (available R0 substitutes in the reality) form another arm of measuring bridge circuit.This electric bridge is to be encouraged by the homology pumping signal, and the about 5V of the PIN2 of AD598 and PIN3 output exchanges that (frequency 3～5KHz) sine voltages, the output of bridge circuit are connected on detection differential input terminal PIN10 and PIN11 respectively.Handle via inner a series of signal, express measurement result with output form Ux=K Δ Uxi0RL.In the formula, Δ Ux can simply think the pure sensor output measurement variable signal of Δ ULx-Δ UL0, and K is a fixed constant that comprises different kinds of parameters.I0=500 μ A also is a constant constant current source electric current, and RL is the pull-up resistor by relation decision between input signal and output signal, and we have found out the succinct and simple of the way of output from expression formula, thereby reliable measurement property is improved greatly.Peripheral components C1=C2=C3 can select between 0.47-2.2 μ f, and the filter time constant of decision systems frequency span, C4 are the oscillator parameter electric capacity of decision exciting signal frequency, between 5-10Nf, select.P1 is a potentiometer of regulating the pumping signal amplitude, can between 3-10K Ω, select, and P2 uses as the adjustment at zero point.
L0 and R0 about as the metrophia compensation bridge arm unit select, and select L0 complementary preferably for the measuring sensor identical inductances can have, and can eliminate the influence of measures ambient temperature and magnetic environment, but trouble is installed.Select R0 to replace L0 simple and convenient, it is easy to revise ranging, and the terrestrial stress of short period is removed in the work period and can be adopted, yet we always only adopt the form of L0 as long-term observation.
IC2MAX309 is a two four tunnel high performance analog switch; Under the control of the I/O of single-chip microcomputer signal A0 and A1, press the decoding logic of 8-4-2-1 and select, L1, L2, L3 and L4 get into respectively and measure and disconnection; Because subsidiary four tunnel public L0 (R0); So with the respective pins short circuit, make measurement between L1-L0, L2-L0, L3-L0 and L4-L0, relatively determine the output signal, between PIN9 and PIN8, directly export AD598 pin of chip PIN11 and PIN10 to.
The IC3AD650 chip is a high performance voltage frequency conversioning circuit; Be commonly referred to the V/F transducer; It is a kind of approach that makes things convenient for of analog digital conversion; Single-chip microcomputer is not only convenient but also reliable as frequency tester, so we have selected the AD650 chip, the measuring DC voltage Ux of AD598 output is transformed into the digitizing means of frequency measurement.This circuit is arranged to, and general ± 5V signal input is guaranteed by the 1.24K resistance of PIN4 and the 10K resistance of PIN2; Frequency output 0-65.535KHz; Decided by the input resistance of PIN3 and the electric capacity between PIN3, PIN1 and the PIN9, we select between capacitor C=1000-1500Pf, resistance R=35-55K Ω.
IC6 and IC5 are the peripheral chips of I2C function, use it single-chip microcomputer is connected unusually simply, and the hardware resource cost is few, and simple to operation.IC6 is high-performance clock module SD2203.IC5 is general universal serial bus Flash storer, according to the optional 24C32 of data volume or 24C64 and similar more high capacity chip.
The IC4 single-chip microcomputer, as the core of automatic measurement system, its communication port TXD is connected wireless module with RXD, as the passage that receives order and transmission data.System clock IC6 is connected with single-chip microcomputer through the I2C interface with serial storage IC5.Two of P0 mouth control as the sensor gating.Another one is elected to be system's time switch control.IC7 connects with single-chip microcomputer as resetting and house dog.Sensor measurement signal is through the V/F conversion, and frequency signal fx to be measured imports from PIN2.Guarantee that system carries out frequency measurement, data storage and with the liaison of host computer by scm software.
The power control part branch by the benchmark of low pressure differential parallel voltage-stabilizing 2940 as sensor+5V power supply, changes between cell voltage 5.6V-9V, can guarantee that all system works voltage is reliable and stable.B0512S-2W is the DC-DC conversion module, will through voltage stabilizing+the 5V system voltage changes out ± two kinds of power supplys of 12V, supplies IC1AD598, IC2MAX309, IC3AD650 work required, guaranteed their normal and stable operation.IC6AQ201 is a current switch, is that the lithium battery that is in the hermetically sealed box is carried out the control of charging outside the machine in this application.
Wireless telecommunications; Adopted commercially available FC211AT digital transmitting and receiving module; Any digital radio module that is operated in the VHF/UHF frequency range on its communication port PIN10 (RXD) and PIN11 (TXD) who is connected on single-chip microcomputer, together places nonmetallic sensor electrical equipment part cartridge together with antenna; Another places erecting tools---and the controller of auto-loading system, stretch out dual-mode antenna outside the copper shell.Though in phreatic water, the communication electromagnetism ripple is had than high attenuation, we have selected power for use is the module of 1W, 1000 meters of ground transmitting-receiving spacings, in our practical application the transmitting-receiving spacing in 3 meters, so can guarantee to communicate by letter reliable and stable.
Fig. 3 is this novel important inventive point; For the electronic measurement circuit of sensor, wireless communication module and the power supply lithium battery mechanical part with sensor is combined in limited space, to accomplish in deep-well, to bear high deep-water pressure simultaneously, we have adopted the hollow line shaft type annular seal housing 15 of aluminium alloy like Fig. 3; Two ends have twice " O " RunddichtringO 14; The barrel shrond 17 of nonmetallic materials closely cooperates with O-ring seal, so hollow line shaft type annular seal housing 15 constitutes ring-type electrical box 10 with shell 17, is enclosed within dexterously on the sensor 5; The electrical appliance part of all sensors has been installed in its inside; Not only solve the transmitting-receiving problem of radio communication, measuring sensor is introduced in hollow tube to the connecting line of electronic surveying part, preferably resolved the sealing problem that phreatic water is depressed; Seepy question all do not occur under vibrations in whole stress relieving process and the effect of cycle of higher pressure water, make this programme obtain satisfactory enforcement.
Description of drawings
The directed loading system connection layout of Fig. 1 is wireless deep-well terrestrial stress absolute value survey sensor and automatic control
Fig. 2 is wireless deep-well terrestrial stress absolute value survey sensor structural drawing
Fig. 3 sensor ring-type electrical box structural drawing
Among Fig. 4,4-1,4-2,4-3,4-4,4-5 is the sensor electrical schematic diagram
1 controller, 2 controller antennas, 3 loaders, 4 sensor ring-type electrical equipment boxes (concealed antenna), 5 sensors; 6 end caps, 7 load screw rod, 8 displacement slide blocks, 9 push rods, 10 sensor ring-type electrical equipment boxes; 11 tapered bars, 12 wedge blocks, 13 stress sensitive elements, 14 " O " RunddichtringO; 15 annular seal housings, 16 electric measurement communications portion, antenna and lithium battery, 17 shells, 18 " O " RunddichtringO
Embodiment
Directed loading system is as shown in Figure 1 assembles with wireless deep-well terrestrial stress absolute measurement sensor and automatic control; Guarantee that three of the sensor 5 six square toes skewers that load screw rods 7 go in corresponding with loader three axle head adapter sleeves that load axle, and the end cap 6 of sensor 5 and the hook of loader are articulated firmly.After the umbilical cable of loader all connects with the DC power box ground control computer; The start-up control program is read the position angle that electronic compass is surveyed through the single-chip microcomputer in the loading control, and the wireless module 2 that is connected by it is again accomplished the radio communication task with the wireless module 4 in the sensor; The value of measuring sensor L1, L2 and L3 in the read sensor 5; Because logical powering on before the sensor 5, can read the history value of the per minute that L1, L2 and L 3 stored, confirm that everything is complete errorless; Be that available rig is completely sent into a complete set of equipment in the well; In the process of going into the well, constantly read the measured value of electronic compass and measuring sensor, to judge each position duty of a complete set of equipment.
When sensor 5 arrival appointed positions, and after getting in the releasing small bore smoothly, sensor 5 is by the running program work of oneself; When confirming that loader 3 is in the measuring sensor L1 loading position to sensor 5, the start-up loading motor loads screw rod 7 and promotes displacement slide blocks 8 and move downward; Then the tapered bar 11 that drives push rod 9 and push rod 9 lower ends moves downward; Drive radially outwards motion of wedge block 12, when touching crag, measuring sensor L1 is stressed; The output voltage Δ Ux of sensor 5 changes (increasing Δ Ux with pressure is that linearity reduces) thereupon; The Δ Ux that changes exports the DC voltage Ux of a variation after IC1AD598 handles, changed into the frequency Δ Fx of variation by IC3AD650.The single-chip microcomputer frequency measurement system log (SYSLOG) frequency measurement changing value of sensor 5 sends through antenna communication module 4 simultaneously, provides numerical value and curve by aboveground control computer and confirms the validity and the heap(ed) capacity that load each time.The time that loads is by timed sequence control, because the time lag of pressing magnetic survey power element and mechanical transmission mechanism to produce, in order to load accurately; Loading procedure is progressive, also can be repeatedly, has a short time to wait between twice loading; Behind the numerical stability to be loaded, determine loading direction and time again, so repeatable operation; After confirming that the L1 measuring sensor gets into the optimum stress couple state, successively L2, L3 are repeated above operation.After loading completion, operation loader 3 breaks away from deep-well stress relieving sensor 5, and loader 3 proposes ground by rig, and the latter retains in the well.
Carrying out in the stress relieving drilling process with large diameter bit; The changing value of each stress sensitive element 13 of sensor 5 all is stored in the storer; The time value of contrasting data can judge exactly that it is with the position relation of creeping into rock core, so be very easy to recover the dynamic process of releasing.
Claims (3)
1. wireless deep-well terrestrial stress absolute measuring piezometric Magnetic Sensor; It is characterized in that: sensor (5) is high performance single chip computer AT 89C55; The inductance measuring element signal is handled and is adopted AD598, and digital communications module adopts commercially available FC211AT, wherein; Electric measurement part and power supply lithium battery all are encapsulated in the annular seal space; The shell of seal cavity (17) adopts the high nonmetallic materials of intensity, carries out radio digital communication with controller antenna (2) in the controller (1) and is connected, and the two ends of annular seal housing (15) and cable hole adopt " O " RunddichtringO (14), (18) to seal.
2. wireless deep-well terrestrial stress absolute measuring piezometric Magnetic Sensor as claimed in claim 1; It is characterized in that: described sensor (5) machinery docks with loader (3) for upper end 90mm diameter, and lower end 36mm diameter cooperates with the measurement petrosal foramen, and the sensitive element (13) of three-component terrestrial stress sensor is installed in the diameter 36mm housing; Each set of pieces vertical interval 23mm; Deflection differs 120 °, and the outer suit ring-type electrical box (10) of 36mm housing is electric measurement communications portion and power supply lithium battery in it.
3. wireless deep-well terrestrial stress absolute measuring piezometric Magnetic Sensor as claimed in claim 1 is characterized in that: the lithium battery that the gas of can supplying power was partly worked 5 hours is housed in the described sensor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202704379U CN202305065U (en) | 2011-07-28 | 2011-07-28 | Wireless piezomagnetic sensor for absolute measurement of crustal stress of deep well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011202704379U CN202305065U (en) | 2011-07-28 | 2011-07-28 | Wireless piezomagnetic sensor for absolute measurement of crustal stress of deep well |
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| CN202305065U true CN202305065U (en) | 2012-07-04 |
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| CN2011202704379U Expired - Fee Related CN202305065U (en) | 2011-07-28 | 2011-07-28 | Wireless piezomagnetic sensor for absolute measurement of crustal stress of deep well |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914393A (en) * | 2012-09-28 | 2013-02-06 | 山东科技大学 | Active pressure-bearing type positioning borehole stress meter and use method thereof |
| CN103776575A (en) * | 2014-01-26 | 2014-05-07 | 安徽理工大学 | Recyclable ground stress testing device |
| CN105865516A (en) * | 2016-03-21 | 2016-08-17 | 安徽工程大学 | Barn monitoring alarm device |
| CN107607232A (en) * | 2017-09-07 | 2018-01-19 | 张重远 | A kind of method for continuous measuring and system of earth's crust rock plane stress |
| CN110595657A (en) * | 2019-09-23 | 2019-12-20 | 煤炭科学技术研究院有限公司 | Small-aperture 16-component conical strain gauge |
-
2011
- 2011-07-28 CN CN2011202704379U patent/CN202305065U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914393A (en) * | 2012-09-28 | 2013-02-06 | 山东科技大学 | Active pressure-bearing type positioning borehole stress meter and use method thereof |
| CN102914393B (en) * | 2012-09-28 | 2014-10-29 | 山东科技大学 | Active pressure-bearing type positioning borehole stress meter and use method thereof |
| CN103776575A (en) * | 2014-01-26 | 2014-05-07 | 安徽理工大学 | Recyclable ground stress testing device |
| CN103776575B (en) * | 2014-01-26 | 2016-03-23 | 安徽理工大学 | Callable detecting earth stress device |
| CN105865516A (en) * | 2016-03-21 | 2016-08-17 | 安徽工程大学 | Barn monitoring alarm device |
| CN105865516B (en) * | 2016-03-21 | 2018-01-12 | 安徽工程大学 | Silo monitoring alarm |
| CN107607232A (en) * | 2017-09-07 | 2018-01-19 | 张重远 | A kind of method for continuous measuring and system of earth's crust rock plane stress |
| CN110595657A (en) * | 2019-09-23 | 2019-12-20 | 煤炭科学技术研究院有限公司 | Small-aperture 16-component conical strain gauge |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20200728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |