CN206757057U - A kind of moving-coil sensor - Google Patents
A kind of moving-coil sensor Download PDFInfo
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- CN206757057U CN206757057U CN201720386233.9U CN201720386233U CN206757057U CN 206757057 U CN206757057 U CN 206757057U CN 201720386233 U CN201720386233 U CN 201720386233U CN 206757057 U CN206757057 U CN 206757057U
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Abstract
The utility model discloses a kind of moving-coil sensor, belong to electromagnetic detection sensor technical field, the moving-coil sensor includes housing, movement, output line, joint and more rib tail bones, and housing is the housing with cavity, and lower housing portion, the position on close ground are provided with line outlet；Movement is fixed in the cavity of housing, and the positive conductive post and negative conductive post of movement connect one end of output line respectively, the external lug of close proximity to ground when the other end of output line passes through line outlet connection work；The major part installation of more rib tail bones, the bottom for being fixed on housing.The utility model provides a kind of metal all-closed moving-coil sensor construction; various electromagnetism and mechanical disturbance can effectively be suppressed; realize the protection to effective mechanical shock signals energy; so as to reach the purpose for improving electromechanical conversion efficiency and reduction interference to greatest extent, the moving-coil sensor is applied to various geological exploration fields.
Description
Technical field
The utility model belongs to electromagnetic detection sensor technical field, more particularly to a kind of moving-coil sensor.
Background technology
Sensor is gathered for vibration signal, the height of its quality depends on the size of itself signal to noise ratio, the letter of sensor
Make an uproar than higher, its quality is better.At present, the numerical values recited of signal to noise ratio has become the good and bad prerequisite of evaluation sensor.
Particularly in geological prospecting construction operation, the main noise being commonly encountered includes two classes：The first kind is caused by electromagnetic field
Interference noise；Another kind of is interference noise caused by mechanical shock.Commonly used sensor can also be divided into two classes：It is a kind of
It is active type sensor；Another kind of is passive sensor.Common are source type sensor have French MEMS, fibre optical sensor,
Following various problems jointly be present in piezoelectric transducer etc., the sensor：
1st, voltage magnitude caused by sensor itself data-collection is not high, relies primarily on gain amplifier to improve its voltage
Amplitude, but gain amplifier is helpless to greatly the raising of signal to noise ratio, it is also easy to so that itself electrical noise and thermal noise while amplifying；
2nd, because the circuit of itself connects the current potential difference on the spot, easily causing different sensors in each point, each point is formd
Potential difference, this potential difference is readily incorporated electromagnetic interference；
3rd, the output line of sensor and ground form a height H, as shown in figure 1, cause output line be suspended on ground it
On, output line can be caused to swing when by wind or extraneous collision, equivalent to one low frequency focus of this swing, above-mentioned low frequency
Interference can be transferred directly to sensor.
4th, there is no sound insulation protection in sensor data-collection part, and height can be produced when dust storm, weeds crash sensor
Frequency microseismic activity disturbs, and this high frequency microseismic activity can turn into high-frequency noise, and be transferred to sensor.
Moreover, each also there are other corresponding problems in the sensor, such as：Sensitivity of the piezoelectric transducer to sound wave
Degree is very strong, is readily incorporated the interference of various sound fields, and output line does not make any electromagnetic protection measure, it is easier to by electromagnetic field
Interference so that signal to noise ratio reduce；French MEMS and fibre optical sensor use rounded tail vertebra and the ground coupling, due to this rounded tail
Vertebra itself coupling surface is small and does not have rotation preventing function, easily causes and couples phenomena such as loosening so that effective mechanical shock energy
Amount produces decay at Coupling point, while causes additional mechanical disturbance increase, and above reason is exactly that above-mentioned existing active type passes
The main reason for primary signal signal to noise ratio that sensor collects in geological prospecting construction operation is not high, common passive sensing
Device has moving-coil combination string and single moving-coil sensor, magnetic suspension sensor, vortex acceleration transducer etc., and this kind of sensor is same
Problems be present：
1st, whole sensing system does not all take full protection electromagnetic interference measure；
2nd, sensor movement is not all made to protect the measure of high frequency sound wave interference；
3rd, output line is all easily swung by wind and influenceed；
4, the structure of rounded tail vertebra is employed, causes sensor and the ground coupling face small and the voluble phenomenon of appearance.
Meanwhile moving-coil sensor combinations string and vortex acceleration transducer combination string to be disturbed a little to increase, and magnetic
Suspended sensor itself internal resistance is excessive and leakage field phenomenon is serious.Therefore this type sensor equally exist collected it is original
The problem of Signal-to-Noise is not high.
To sum up shown, home and abroad is usually used in the various sensors of geological prospecting there is influence itself signal to noise ratio at present
The shortcomings that.And the demand of home and abroad geological prospecting at present comes into high-resolution, high-precision aspect, because sensor is in
The front end of geologic signals collection, the signal to noise ratio for improving sensor itself are the necessary conditions that sensor technology is broken through.
Utility model content
In view of this, the utility model provide it is a kind of it is metal all-closed, there is sound insulation protective jacket and output line is closely
The moving-coil sensor construction in face, while the structure for employing raising coupling mass can effectively suppress various electromagnetism and mechanical dry
Disturb, realize the protection of effective mechanical shock signals energy, done so as to reach to improve electromechanical conversion efficiency to greatest extent and reduce
The purpose disturbed, the moving-coil sensor are applied to various geological exploration fields.
The utility model is solved the above problems by following technological means：
A kind of moving-coil sensor, it is characterised in that including housing, movement, output line, joint and more rib tail bones, wherein：
The enclosure interior is provided with cavity, and the lower housing portion, the position on close ground are provided with line outlet；
The movement is fixed in the cavity of housing, and the positive conductive post and negative conductive post of movement connect defeated respectively
One end of outlet, the external lug of close proximity to ground when the other end of the output line passes through line outlet connection work；
The major part installation of more rib tail bones, the bottom for being fixed on the housing.
Further, the bottom centre position of the housing is provided with installation nut, and the major part of more rib tail bones carries
External screw thread is connected through a screw thread, is fixed on installation nut interior.
Further, in addition to movement bolt and base swivel nut for installing machine core, the base swivel nut are arranged on shell
The bottom centre of body cavity, one end connection movement of the movement bolt, the other end of movement bolt are connected in base swivel nut.
Further, the housing is divided into upper shell and lower house, and the inner surface for being close to upper shell and lower house is set respectively
It is equipped with shielding case and lower shielding case.
Further, sound insulation set is provided between the upper shielding case, lower shielding case and movement.
Further, the composition surface of the upper shell and lower house connects by fastening bolt, sealed.
Further, the side of the lower house is provided with anti-rotational muscle.
Further, the upper shielding case and lower shielding case use microcrystallizing alloy, permalloy, ingot iron or carbon steel system
Into.
Further, the sound insulation set is made of polyurethane, rubber or compound sponges material.
Further, the base swivel nut, movement bolt are made of LY12 aluminiums or copper material.
A kind of moving-coil sensor of the present utility model has the advantages that：
The utility model provides a kind of metal all-closed moving-coil sensor construction, and this structure has to be suppressed strongly
The ability of various electromagnetic interferences, and while various electromagnetic interferences are shielded, various electromagnetic interference signals can be imported rapidly
Greatly, the ability for puncturing moving-coil sensing system electromagnetism interference and anti lightning has obtained large increase.Wherein, sound insulation set meeting
There is certain decay inhibitory action to the various mechanical shock signals from space, while take the side of output line close proximity to ground
Formula so that mechanical disturbance caused by the rustle of leaves in the wind has obtained certain decay, and uses more rib tail cones so that moving-coil sensor
It is guaranteed with the coupling effect of earth's surface, serves the effect that little energy loses in effective mechanical shock signals transmitting procedure.
In summary, the moving-coil sensing system has the shielding good to various electromagnetic interferences and guide functions, to various mechanical dries
Disturbing signal has good decay inhibitory action, has protective effect well to effective mechanical shock signals energy, so as to reach
Electromechanical conversion efficiency is improved to the limit and reduces the purpose of interference to greatest extent, and the moving-coil sensor is applied to variously
Matter Exploration Domain, there is following major advantage：
1st, suppression electromagnetic interference effect is good：Upper and lower casing and the shielding of all-metal can be used by suppressing electromagnetic noise interference
Line is combined to realize, when making shielding case from aluminum, the interference to magnetic field does not work.And during with Steel material, to magnetic field
Shield effectiveness it is limited, only using microcrystallizing alloy material when, to the interference shielding effect highly significant of electromagnetic field；Output line is adopted
With copper shield net ground connection and stranded core mode, suppression decay of the output line to electromagnetic interference can be made to play good effect, from
And make whole system that all there is good suppression attenuation to electromagnetic interference.
2nd, it is good to mechanical disturbance inhibition：For different mechanical disturbances to moving-coil sensor influence characteristic, take
Different suppression decay countermeasure so that moving-coil sensor is substantially reduced by the influence degree of mechanical disturbance, has been reached to mechanical dry
Disturb the effect for suppressing decay.
3rd, coupling mass is improved：Coupling mass quality is to ensure the elder generation of various sensor data-collection energy loss sizes
Certainly condition, by the path analysis that effective vibration signal is received to moving-coil sensor：Taken first from outside and improve moving-coil biography
The mode that sensor couples with earth's surface, using more rib tail bones and the lower house structure with muscle, increase moving-coil sensor and the ground coupling
Area and coupling stiffness, and serve the effect for preventing rotary motion；Eliminate the non-rigid of moving-coil sensor movement simultaneously
It is of coupled connections, employs rigidity and be of coupled connections, ensure that the coupling mass of movement, has been finally reached the raising of moving-coil sensing system
The purpose of coupling mass.
4th, the situation of single moving-coil sensor signal to noise ratio is changed：From the point of view of three kinds of effective ways of signal to noise ratio are improved, only
Noise is reduced, while the ability for improving sensor reception useful signal is optimal case.High s/n ratio list of the present utility model is only
Moving-coil sensor is entirely to be designed according to this dominant ideas, and can bulk industrial application condition comparative maturity,
It is especially suitable for field geology exploration operation.
5th, construction operation efficiency high：Single moving-coil sensor of high s/n ratio is applied due to can individually complete various geological prospectings
Work job requirements, more moving-coil sensor combinations string effects can be substituted completely, may be such that construction operation efficiency greatly improves.
6th, integrated cost is low：Due to being single moving-coil sensor construction operation, therefore it may be such that the buying cost of product, apply
Work cost and safeguard that carrying cost is all greatly lowered, therefore, integrated cost is low.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, below by embodiment it is required use it is attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is traditional moving-coil sensor construction schematic diagram；
Fig. 2 is a kind of structural representation of moving-coil sensor of the utility model；
Fig. 3 is a kind of upward view of moving-coil sensor of the utility model；
Fig. 4 is a kind of four rib tail bone structural representations of moving-coil sensor of the utility model；
Fig. 5 is Fig. 4 A-A faces sectional view.
Wherein, 1- upper shells, 2- movements, 3- fastening bolts, 4- output lines, 5- joints, 6- metallic ground circles, 7- muscle, 8-
Lower shielding case, 9- installation nuts, the more rib tail bones of 10-, 11- base swivel nuts, 12- movement bolts, 13- lower houses, 14- ground, 15-
Upper shielding case, 16- sound insulation sets.
Embodiment
In description of the present utility model, it is to be understood that term " " center ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply and be signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New limitation.Term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, unless otherwise indicated, the implication of " multiple "
It is two or more.
The utility model is described in detail below with reference to accompanying drawing.
As shown in Figure 2,3, a kind of moving-coil sensor, including housing, movement 2, output line 4, joint 5 and more rib tail bones 10：
The enclosure interior is provided with cavity, and the lower housing portion, the position on close ground are provided with line outlet；Movement 2 is fixed on
In the cavity of housing, the positive conductive post and negative conductive post of movement 2 connect one end of output line 4 respectively, the output line 4
External lug 5 of the other end through close proximity to ground during line outlet connection work；The major part installation of more rib tail bones 10, it is fixed on
The bottom of the housing.
Specifically, more rib tail bones 10 can use four rib tail bone structures, as shown in Figures 4 and 5, using four rib tail bone structure masters
If in order to corresponding with four ribs of lower house bottom, this structure is just want when in the lengthening of tail cone part.
It should be noted that the movement 2 use moving-coil sensor movement, without power supply and working service convenience.Together
When, the external lug 5 connects metallic ground circle 6, and output line 4 uses copper shield net ground structure and stranded core mode, right
Electromagnetic interference has good inhibition.
Specifically, the bottom centre position of the housing is provided with installation nut 9, the major part of more rib tail bones 10 carries
External screw thread is connected through a screw thread, is fixed on inside installation nut 9；Also include the He of movement bolt 12 for installing machine core 2
Base swivel nut 11, base swivel nut 11 are arranged on the bottom centre of housing hollow, one end connection movement 2 of movement bolt 12, movement
The other end of bolt 12 is connected in base swivel nut 11.
Specifically, the housing is divided into upper shell 1 and lower house 13, it is close to the inner surface point of upper shell 1 and lower house 13
Shielding case 15 and lower shielding case 8 are not provided with；The upper shielding case 15, lower shielding case 8 and its in addition to the bottom of movement 2
He is both provided with sound insulation set 16 between part；The upper shell 1 is connected by fastening bolt 3 with the composition surface of lower house 13, is close
Envelope, while can also according to circumstances increase " O " type sealing ring between upper shell 1, lower house 13；The lower house 13
Side is provided with anti-rotational muscle；The side of lower house 13 is symmetrically arranged with four anti-rotational muscle 7.
By effective vibration signal that moving-coil sensor is received comes from below ground, and what ground above section received
Vibration signal is all interference signal, and specific interference signal includes three kinds of forms of expression：First, the high frequency sound wave from space is done
Disturb, this high frequency sound wave can produce interference directly through upper shell 1 to movement 2；Second, face ripple is done caused by various mechanical seismic sources
Disturb, this interference can make moving-coil sensor produce horizontal displacement, vertical displacement and swing offset when coupling bad；Three are due to
Wind or extraneous collision cause moving-coil Sensor output 4 to swing high frequency caused by the low-frequency disturbance brought into and dust storm collision housing
Microseismic activity.For above-mentioned mechanical disturbance feature, embodiment of the present utility model adopts the following technical scheme that：
High frequency sound wave from space is disturbed increases sound insulation set 16 to sensor movement 2, and the sound insulation set 16 is using special
Different polyurethane, special rubber or special compound sponges material etc..Because moving-coil sensor upper shell 1 uses nylon material, nylon
Itself wave impedance of material is larger, can have a certain degree of decay to high frequency sound wave, while increased sound insulation set 16 has pole
Strong attenuation by absorption is acted on so as to reach suppression to spatial high-frequency sound wave, attenuation.It is typically due to the coupling of moving-coil sensor
It is bad, moving-coil sensor can be made to produce horizontal displacement, vertical displacement and swing offset when by face wave impact, due to this reality
The coupling area that more rib tail bones 10 and anti-rotational muscle 7 increase sensor base and ground is employed with new embodiment, together
When sensor is not likely to produce rotation, greatly reduce sensor coupling loosen probability and resulting additional interference.
All there is a height H in traditional moving-coil Sensor output 4, this height H easily produces in wind with ground
A kind of raw swing, this swing is equivalent to a low frequency microseismic activity source, and this frequency wobbles can directly be passed to moving-coil biography
Sensor forms low-frequency disturbance, and when the construction operation in sand ground and thick grass, wind can drive the grains of sand and weeds direct collision sensor
High-frequency Interference is formed, in view of the above-mentioned problems, embodiment of the present utility model adopts the following technical scheme that：Sensing in the present embodiment
Device takes the mode of patch ground lead-out wire, and this mode eliminates the height H of output line 4 and ground, solves wind substantially
The problem of output line 4 is swung, while the set 16 that insulates against sound can also suppress the grains of sand and grass to high frequency fine motion caused by housing.
The reception of useful signal further how is improved, ensures that the receiving ability of useful signal needs two and carries bar
Part：First, moving-coil sensor lower house 13 and more rib tail bones 10 and the coupling effect on ground；Second, moving-coil sensor movement 2 and shell
Coupling stiffness between body, that is, coupling stiffness, for sensor base and the coupled problem on ground, taking two aspects should
To measure：First, using more rib tail bones 10 increase coupling area and improve anti-rotational ability；Second, lower house 13 is provided with anti-rotation
Convulsion 7, further increase coupling area and the anti-rotational effect of increase in ground.
For 2 non-rigid fixation problem of movement, the bottom of movement 2 is set to take bolt connection, bolt makes movement 2 and lower house
13 are rigidly connected, and so as to reach the purpose rigidly coupled, ensure that what effective vibration energy hardly lost in transmittance process
Effect, movement 2 farthest obtain data-collection energy and are achieved.Base swivel nut 11, movement bolt 12 can use
LY12 aluminiums or copper material, further avoid the magnetic field exposure of movement 2.
The utility model discloses a kind of moving-coil sensor, belong to electromagnetic detection sensor technical field, moving-coil sensing
Device includes housing, movement 2, output line 4, joint 5 and more rib tail bones 10, and housing is the housing with cavity, lower housing portion, close
The position on ground is provided with line outlet；Movement 2 is fixed in the cavity of housing, and the positive conductive post and negative pole of movement 2 are led
Electric post connects one end of output line 4 respectively, and the outside of the other end through close proximity to ground during line outlet connection work of output line 4 connects
First 5；The major part installation of more rib tail bones 10, the bottom for being fixed on housing.The utility model provides a kind of metal all-closed move
Coil sensor structure, this structure has the ability for suppressing various electromagnetic interferences strongly, and is shielding various electromagnetic interferences
Afterwards, various electromagnetic interference signals the earth be can be imported rapidly, moving-coil sensing system electromagnetism interference and anti lightning punctured
Ability obtained large increase.Sound insulation set can have certain decay to suppress to make to the various mechanical shock signals from space
With, while take the mode of output line close proximity to ground so that mechanical disturbance caused by the rustle of leaves in the wind has obtained certain decay,
And use more rib tail cones so that moving-coil sensor and the coupling effect of earth's surface are guaranteed, and serve effective mechanical shock
The effect that little energy loses in signals transmission.In summary, the moving-coil sensing system has good to various electromagnetic interferences
Various mechanical disturbance signals are had good decay inhibitory action by good shielding and guide functions, and effective mechanical shock is believed
Number energy has protective effect well, is disturbed so as to reach to improve electromechanical conversion efficiency to greatest extent and reduce to greatest extent
Purpose, the moving-coil sensor is applied to various geological exploration fields.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (10)
- A kind of 1. moving-coil sensor, it is characterised in that including housing, movement, output line, joint and more rib tail bones, wherein：The enclosure interior is provided with cavity, and the lower housing portion, the position on close ground are provided with line outlet；The movement is fixed in the cavity of housing, and the positive conductive post and negative conductive post of movement connect output line respectively One end, the external lug of the other end of the output line through close proximity to ground during line outlet connection work；The major part installation of more rib tail bones, the bottom for being fixed on the housing.
- 2. moving-coil sensor according to claim 1, it is characterised in that：The bottom centre position of the housing is provided with peace Loading nut, the major part of more rib tail bones are connected through a screw thread with external screw thread, are fixed on installation nut interior.
- 3. moving-coil sensor according to claim 2, it is characterised in that：Also include for installing machine core movement bolt and Base swivel nut, the base swivel nut are arranged on the bottom centre of housing hollow, one end connection movement of the movement bolt, movement The other end of bolt is connected in base swivel nut.
- 4. moving-coil sensor according to claim 3, it is characterised in that：The housing is divided into upper shell and lower house, tightly The inner surface for sticking housing and lower house is respectively arranged with shielding case and lower shielding case.
- 5. moving-coil sensor according to claim 4, it is characterised in that：The upper shielding case, lower shielding case and movement it Between be provided with sound insulation set.
- 6. moving-coil sensor according to claim 5, it is characterised in that：The composition surface of the upper shell and lower house by Fastening bolt connection, sealing.
- 7. moving-coil sensor according to claim 6, it is characterised in that：The side of the lower house is provided with anti-rotational Muscle.
- 8. moving-coil sensor according to claim 7, it is characterised in that：The upper shielding case and lower shielding case use crystallite Alloy, permalloy, ingot iron or carbon steel are made.
- 9. moving-coil sensor according to claim 8, it is characterised in that：The sound insulation set is using polyurethane, rubber or multiple Sponge material is closed to be made.
- 10. moving-coil sensor according to claim 9, it is characterised in that：The base swivel nut, movement bolt use LY12 Aluminium or copper material are made.
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| CN201720386233.9U CN206757057U (en) | 2017-04-13 | 2017-04-13 | A kind of moving-coil sensor |
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| CN201720386233.9U CN206757057U (en) | 2017-04-13 | 2017-04-13 | A kind of moving-coil sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024719A (en) * | 2017-04-13 | 2017-08-08 | 西安振兴泽博智能震感科技有限公司 | A kind of moving-coil sensor |
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- 2017-04-13 CN CN201720386233.9U patent/CN206757057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024719A (en) * | 2017-04-13 | 2017-08-08 | 西安振兴泽博智能震感科技有限公司 | A kind of moving-coil sensor |
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