CN104614102A - Three-dimensional space monitoring based ground pressure sensor - Google Patents
Three-dimensional space monitoring based ground pressure sensor Download PDFInfo
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- CN104614102A CN104614102A CN201410696083.2A CN201410696083A CN104614102A CN 104614102 A CN104614102 A CN 104614102A CN 201410696083 A CN201410696083 A CN 201410696083A CN 104614102 A CN104614102 A CN 104614102A
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- ground pressure
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Abstract
The invention provides a three-dimensional space monitoring based ground pressure sensor. The three-dimensional space monitoring based ground pressure sensor comprises an elliptic housing, an outgoing line device, a circuit board, and thee mutually-vertical ground pressure monitoring heads; the outgoing line device is arranged at the upper end of the elliptic housing, comprising an A0 compressing nut, an A0 cushion with pores, an A0 pore-free cushion, an A0 sealing ring and a connecting joint. With the adoption of the three-dimensional space monitoring based ground pressure sensor, cement, sand, water and other materials cannot enter the elliptic housing, so that the safety of devices in the elliptic housing can be ensured, and a good working environment can be created.
Description
Technical field
The invention belongs to pressure sensor field, ground, specifically a kind of ground pressure sensor based on three dimensions monitoring.
Background technology
At present, extensively adopting various kinds of sensors to monitor in ground pressure monitoring field, mainly there is following problem in the pressure transducer adopted at present: 1, cannot accomplish real space three-dimensional monitoring.As publication number: 202033140U, publication date: 2011-11-09, name is called the utility model technical scheme of " triaxiality collector ", this technical scheme can only realize to the monitoring of pressing in the perpendicular planar range in metal cylinder barrel lenght direction, the monitoring to paralleling direction to press with metal cylinder cylindrical shell cannot be accomplished, so this technical scheme is mainly for the monitoring of pressure in certain or multiple planar range be parallel to each other, cannot accomplish to press monitoring to above-mentioned plane orthogonal direction.If adopt similar above-mentioned technology to realize three-dimension monitor, just must arrange multiple monitoring device in different angles, multiple monitoring device cooperatively interacts just can complete three-dimension monitor, and this will certainly increase time and financial cost, the accuracy of impact monitoring.2, can only monitor according to predetermined direction of pressing, once press direction to change, cannot change by monitoring pressure promptly and accurately.3, Monitoring Data drift is large, back to zero is poor, and system stability workability is poor.Often accurate in order to realize Monitoring Data in prior art, improve monitoring susceptibility, the surface that parts are laid in device is experienced strain resistor, voltage dependent resistor (VDR) equal pressure in capital, this just causes above-mentioned parts to be easy to by native stone squeeze and destroy, a lot of device just cannot back to zero after once pressing, and has a strong impact on monitoring effect.4, in prior art, pressure transducer profile is based on square, cylindrical, and these shapes install more complicated, the installing drill bore dia needed is large, and installation cost is high, and these shapes itself are stressed unreasonable, under outside High Pressure, easily produce distortion, even damaged by pressure.
Summary of the invention
The present invention is a kind of ground pressure sensor based on three dimensions monitoring, is become with three orthogonal ground pressure monitoring head groups by oval-shaped shell, outgoing line device, circuit board.Oval-shaped shell upper end is provided with outgoing line device, outgoing line device comprises A0 gland nut, the porose pad of A0, A0 non-porous pads, A0 O-ring seal and communicating joint, this device effectively can ensure that the materials such as mud, sand, water can not enter into oval-shaped shell inside, ensure oval-shaped shell internal components safety, for its work provides good environment.Be provided with circuit board in oval-shaped shell inside, the components and parts of this circuit board adopt SMD, and have low in energy consumption, the advantages such as volume is little, adopt high-precision potentiometer, ensure the precision that data regulate and accuracy, reduce Monitoring Data drift.Three orthogonal ground pressure monitoring heads lay respectively at lower end and the middle part of oval-shaped shell, space each side can be monitored always press simultaneously, and respectively pressure signal is changed into electric signal, then electric signal transmission is processed to circuit board, through the Signal transmissions of circuit board process to surface installation.Adopt after arranging three orthogonal ground pressure monitoring heads simultaneously, the pressure in three directions can be monitored simultaneously, and pressing direction without the need to judging in advance, still can accurately change by monitoring pressure when pressing direction to suddenly change, and can judge mainly to press direction.
As improvement, ground pressure monitoring head by putting forth effort plate, piston, elastic body, straingauge, calcium grease, O-ring seal, oil cylinder form, wherein put forth effort plate and be positioned at ground pressure monitoring head foremost, and be connected with piston, it is bottle cap shape that elastic body and oil cylinder form one, and piston can move freely inside oil cylinder, and calcium grease is between piston and elastic body, straingauge is attached at outer elastomeric surface, and O-ring seal is surrounded on outer surface of piston.Put forth effort plate to be responsible for gathering to press, and pressure is passed to coupled piston, piston can extrude the calcium grease between piston and elastic body under the effect of pressing, calcium grease can play lubrication on the one hand, reduce the frictional resistance between piston and oil cylinder, on the other hand the calcium grease pressure uniform that piston can be passed over pass to elastomeric inside surface, elastic body inside surface can produce homogeneous deformation under the pressure action of calcium grease, and the straingauge being attached at outer elastomeric surface also can produce distortion thereupon, and this distortion is converted into electrical signal transfer to circuit board.O-ring seal is between piston and oil cylinder, the sealing function to calcium grease can be played, and do not affect piston moving freely relative to oil cylinder, after pressing and laying down, under the resilient pressure effect of calcium grease, piston, put forth effort plate and can automatically revert to initial position, calcium grease internal pressure disappears thereupon, and elastic body, straingauge also can automatically revert to original position.
As improvement, straingauge is circular, circular straingauge has uniform force, avoid occurring that stress such as to concentrate at the advantage, institute of the present invention Monitoring Data can be made to possess good linear change, thus raising monitoring accuracy, circular straingauge also has the feature of easy laminating, good manufacturability.
As improvement, oblong shell body diameter is 50 millimeters.
The invention has the beneficial effects as follows:
1, only just can realize three-dimensional ground pressure monitoring with a device, because the present invention arranges ground pressure monitoring head on three orthogonal directions, the pressure change in three directions can be monitored simultaneously, and can judge mainly to press direction.The present invention enormously simplify apparatus relative to prior art, decreases equipment cost, decreases installation cost, reduces failure rate.
2, pressing direction without the need to judging in advance, when pressing direction to suddenly change, also accurately detected pressures can change, and can judge mainly to press direction.
3, adopt strain resistor built-in process, avoid strain resistor directly to contact with the soil body, available protecting strain resistor, prolongation strain resistor serviceable life.Adopt piston-type hydro pressure device, can ensure to press to pass to strain resistor accurately on the one hand, accurate measurements place pressure data, on the other hand, this device can be avoided occurring jam problem on to greatest extent, enables the present invention's accurately back to zero, drifts about little.
4, adopt oblong shell body structure, this structure is convenient to install in the borehole, and requires less relative to square structure to bore size, reduces bore operation cost; Oval-shaped shell structure stress is reasonable, can bear larger external pressure, ensure self not damaged by pressure.
Accompanying drawing explanation
Accompanying drawing 1 is sectional view of the present invention.
Accompanying drawing 2 is outside drawings of the present invention.
Accompanying drawing 3 is ground pressure monitoring head detail drawings.
Specific as follows:
A0 gland nut 1, A0 porose pad 2, A0 non-porous pads 3, A0 O-ring seal 4, communicating joint 5, oval-shaped shell 6, circuit board 7, puts forth effort plate 8, straingauge 9, calcium grease 10, elastic body 11, O-ring seal 12, piston 13, oil cylinder 14.
Embodiment
With reference to the accompanying drawings, a kind of ground pressure sensor based on three dimensions monitoring, is become with three orthogonal ground pressure monitoring head groups by oval-shaped shell 6, outgoing line device, circuit board 7.Oval-shaped shell 6 upper end is provided with outgoing line device, outgoing line device comprises A0 gland nut 1, the porose pad 2 of A0, A0 non-porous pads 3, A0 O-ring seal 4 and communicating joint 5, it is inner that this device effectively can ensure that the materials such as mud, sand, water can not enter into oval-shaped shell 6, ensure oval-shaped shell 6 internal components safety, for its work provides good environment.Be provided with circuit board 7 in oval-shaped shell inside, the components and parts of this circuit board 7 adopt SMD, and have low in energy consumption, the advantages such as volume is little, adopt high-precision potentiometer, ensure the precision that data regulate and accuracy, reduce Monitoring Data drift.Three orthogonal ground pressure monitoring heads lay respectively at lower end and the middle part of oval-shaped shell 6, space each side can be monitored always press simultaneously, and respectively pressure signal is changed into electric signal, then electric signal transmission is processed to circuit board 7, through circuit board 7 process Signal transmissions to surface installation.Adopt after arranging three orthogonal ground pressure monitoring heads simultaneously, the pressure in three directions can be monitored simultaneously, and pressing direction without the need to judging in advance, still can accurately change by monitoring pressure when pressing direction to suddenly change, and can judge mainly to press direction.Described ground pressure monitoring head by putting forth effort plate 8, piston 13, elastic body 11, straingauge 9, calcium grease 10, O-ring seal 12, oil cylinder 14 form, wherein put forth effort plate 8 and be positioned at ground pressure monitoring head foremost, and be connected with piston 13, it is bottle cap shape that elastic body 11 and oil cylinder 14 form one, piston 13 can move freely inside oil cylinder 14, calcium grease 10 is between piston 13 and elastic body 11, and straingauge 9 is attached at elastic body 11 outside surface, and O-ring seal 12 is surrounded on piston 13 outside surface.Put forth effort plate 8 to be responsible for collection to press, and pressure is passed to coupled piston 13, piston 13 can extrude the calcium grease 10 between piston 13 and elastic body 11 under the effect of pressing, calcium grease 10 1 aspect can play lubrication, reduce the frictional resistance between piston 13 and oil cylinder 14, the inside surface passing to elastic body 11 of the pressure uniform that another aspect calcium grease 10 can pass over piston, elastic body 11 inside surface can produce homogeneous deformation under the pressure action of calcium grease 10, and the straingauge 9 being attached at elastic body 11 outside surface also can produce distortion thereupon, and this distortion is converted into electrical signal transfer to circuit board 7.O-ring seal 12 is between piston 13 and oil cylinder 14, the sealing function to calcium grease 10 can be played, and do not affect piston 13 moving freely relative to oil cylinder 14, after pressing and laying down, under the resilient pressure effect of calcium grease 10, piston 13, put forth effort plate 8 and can automatically revert to initial position, calcium grease 10 internal pressure disappears thereupon, and elastic body 11, straingauge 9 also can automatically revert to original position.
Claims (4)
1. the ground pressure sensor based on three dimensions monitoring, it is characterized in that: by oval-shaped shell (6), outgoing line device, circuit board (7) becomes with three orthogonal ground pressure monitoring head groups, oval-shaped shell (6) upper end is provided with outgoing line device, outgoing line device comprises A0 gland nut (1), the porose pad of A0 (2), A0 non-porous pads (3), A0 O-ring seal (4) and communicating joint (5), circuit board (7) is provided with in oval-shaped shell (6) inside, three orthogonal ground pressure monitoring heads lay respectively at lower end and the middle part of oval-shaped shell (6), space each side can be monitored always press simultaneously, and respectively pressure signal is changed into electric signal, then electric signal transmission is processed to circuit board, through the Signal transmissions of circuit board process to surface installation.
2. as claimed in claim 1 a kind of based on three dimensions monitoring ground pressure sensor, it is characterized in that: described ground pressure monitoring head is by putting forth effort plate (8), piston (13), elastic body (11), straingauge (9), calcium grease (10), O-ring seal (12), oil cylinder (14) forms, wherein put forth effort plate (8) and be positioned at ground pressure monitoring head foremost, and be connected with piston (13), it is bottle cap shape that elastic body (11) and oil cylinder (14) form one, piston (13) can move freely in oil cylinder (14) inner side, calcium grease (10) is positioned between piston (13) and elastic body (11), straingauge (9) is attached at outer elastomeric surface, O-ring seal (12) is surrounded on piston (13) outside surface.
3. a kind of ground pressure sensor based on three dimensions monitoring as claimed in claim 1, is characterized in that: described straingauge (9) is for circular.
4. as claimed in claim 1 a kind of based on three dimensions monitoring ground pressure sensor, it is characterized in that: oval-shaped shell (6) external diameter is 50 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696083.2A CN104614102B (en) | 2014-11-27 | 2014-11-27 | A kind of ground pressure sensor that is monitored based on three dimensions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410696083.2A CN104614102B (en) | 2014-11-27 | 2014-11-27 | A kind of ground pressure sensor that is monitored based on three dimensions |
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| CN104614102A true CN104614102A (en) | 2015-05-13 |
| CN104614102B CN104614102B (en) | 2017-03-15 |
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| CN201410696083.2A Expired - Fee Related CN104614102B (en) | 2014-11-27 | 2014-11-27 | A kind of ground pressure sensor that is monitored based on three dimensions |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148705A (en) * | 1990-06-25 | 1992-09-22 | Louisiana State University And Agricultural And Mechanical College | Method and apparatus for determining the wettability of an earth formation |
| CN103046524A (en) * | 2012-12-28 | 2013-04-17 | 东南大学 | Piezocone penetration test probe for probing underground magnetic field intensity |
| CN103857876A (en) * | 2011-07-28 | 2014-06-11 | 普拉德研究及开发股份有限公司 | System and method for performing wellbore fracture operations |
| CN204479218U (en) * | 2014-11-27 | 2015-07-15 | 山东鲁科自动化技术有限公司 | A kind of ground pressure sensor based on three dimensions monitoring |
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2014
- 2014-11-27 CN CN201410696083.2A patent/CN104614102B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148705A (en) * | 1990-06-25 | 1992-09-22 | Louisiana State University And Agricultural And Mechanical College | Method and apparatus for determining the wettability of an earth formation |
| CN103857876A (en) * | 2011-07-28 | 2014-06-11 | 普拉德研究及开发股份有限公司 | System and method for performing wellbore fracture operations |
| CN103046524A (en) * | 2012-12-28 | 2013-04-17 | 东南大学 | Piezocone penetration test probe for probing underground magnetic field intensity |
| CN204479218U (en) * | 2014-11-27 | 2015-07-15 | 山东鲁科自动化技术有限公司 | A kind of ground pressure sensor based on three dimensions monitoring |
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| CN104614102B (en) | 2017-03-15 |
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Granted publication date: 20170315 Termination date: 20171127 |