CN209327587U - A kind of active capacitor formula wave detector - Google Patents
A kind of active capacitor formula wave detector Download PDFInfo
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- CN209327587U CN209327587U CN201822124168.XU CN201822124168U CN209327587U CN 209327587 U CN209327587 U CN 209327587U CN 201822124168 U CN201822124168 U CN 201822124168U CN 209327587 U CN209327587 U CN 209327587U
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Abstract
The utility model provides a kind of active capacitor formula wave detector, including top cover, jacket, tail cone, circuit board and pick up shake device, it includes base plate, fixed column, pendulum and spring suspension null setting that this, which picks up shake device, and pendulum hangs null setting progress zero offset and offset the installation horizontally suspended after self gravity and fixes by spring；Through coil rack is fixed on pendulum, the both ends on coil rack are wound with symmetrically arranged feedback coil, and the every end of coil rack is equipped with magnetic pole and magnet steel；One group of differential capacitor piece is also symmetrically installed on coil rack；The differential capacitor piece and pendulum of coil rack upper and lower sides form differential capacitance；Can deep prospecting and engineering vibration measurement of the large-scale application in geo-logical terrain, widely construction quality assessment, earth formation deep provide accurate valid data, have frequency band low, small in size, light-weight, adapt to more places such as marsh, wetland, soil, sandstone；Spring, which hangs null setting, has electronics zeroing function, and the inclination angle that works is up to 30 °.
Description
[technical field]
The utility model relates to seismic exploration technique more particularly to a kind of active capacitor formula wave detectors.
[background technique]
Currently, seismic prospecting is one of currently used oil exploration method, due to low frequency wave in field of seismic exploration
Wavelength is longer, there is stronger penetration power, can do deep prospecting；Simultaneously as exploration purpose layer depth increases, high-frequency signal declines
Subtract seriously, low frequency signal retains completely, and the imaging of earthquake low-frequency information can substantially improve deep formation and portray precision, to increase
Strong deep resource explores ability, and low frequency exploration is also the technical way for solving igneous rock area energy transmission at present, adopts
It is the exploitation method in domestic and international forward position at present with low frequency exploration.Therefore, in vibration monitoring field, low frequency earthquake wave detector is to use
To detect the indispensable sensor tool of ground motion.
But existing low frequency earthquake wave detector is frequently with passive moving-coil geophone, and moving-coil geophone accomplish it is low
In the case where frequency vibration detection, volume and weight will be very big, and that there are sensitivity is low, low frequency response decaying is serious, frequency
The defects of with narrow (> 10Hz), it has not been convenient to use, the needs of low frequency exploration are no longer satisfied, although electrical feedback can be passed through
Etc. technologies improve its low frequency response, make its responsive bandwidth down to 3Hz, but this method has high-frequency signal and damages to a certain degree
Wound.So not can effectively solve the low frequency response missing problem lower than 2.5Hz in the prior art, earthquake can not be examined
The low frequency response decaying of wave device carries out effective compensation, while not damaging the measurement accuracy to high-frequency signal again, therefore existing is lower than
The passive moving-coil geophone of 2.5Hz can not carry out large-scale application at present.
[utility model content]
The utility model by using capacitive sensor technology, provide one kind can large-scale application in geological prospecting and engineering
In vibration measurement, more places such as marsh, wetland, soil, sandstone are adapted to, have electronics zeroing function, inclined work range reaches
To 30 °, have it is compact-sized, small in size, light-weight, record near earthquake, local earthquake, frequency band is low, low frequency is clear, and high frequency is abundant to be had
Source condenser type wave detector.
In order to realize that above-mentioned purpose of utility model, the technical solution adopted in the utility model be:
A kind of active capacitor formula wave detector, including top cover, jacket, tail cone, circuit board and shake device is picked up, tail cone installation is solid
Due to jacket bottom end, circuit board shakes in the airtight cavity that device is installed on inside jacket with picking up and is fixed by top seal；
The circuit board is installed on the upside of airtight cavity in jacket, it is described pick up shake device vertically to be installed on shell
The lower part of airtight cavity in covering；
The shake device that picks up includes base plate, fixed column, pendulum and spring suspension null setting, the base plate level peace
In airtight cavity loaded on jacket, the fixed column right angle setting is fixed on base plate side, setting on the upside of the base plate
Pendulum by spring hang null setting carry out zero offset intense adjustment and offset pendulum itself gravity after horizontally suspend
Be installed in fixed column；
It is located on the coil rack for having setting symmetrical above and below and inner hollow, coil rack vertically in the middle part of the pendulum
The both ends of pendulum upper and lower sides are oppositely wound a pair of symmetrically arranged feedback coil, at the feedback coil at the every end of coil rack
It is respectively equipped with the magnetic pole at insertion feedback coil center and wraps up the magnet steel of entire feedback coil；
Also be symmetrically installed on the coil rack of the pendulum upper and lower sides one group respectively with the feedback coil of every side on the inside of electricity
Connection and horizontal positioned differential capacitor piece；
The differential capacitor piece and pendulum of the coil rack upper and lower sides form differential capacitance, when ground generates vibration motion
When, pendulum generates movement with respect to the differential capacitor piece of upper and lower sides, so that differential capacitor piece generates electric current, electric current flows into coil rack
Magnetic force is generated after the feedback coil of upper and lower sides respectively, and is generated respectively instead under the magnetic pole effect in coil rack upper and lower sides magnetic cylinder
To active force, so that pendulum is constantly in the centre of two differential capacitor pieces of upper and lower sides.
Further, the differential capacitor piece is variable area formula differential capacitor.
Further, the spring suspension null setting includes left end briquetting, big leaf spring, small leaf spring, right end briquetting and volume
Tension spring, the nested small leaf spring of the big leaf spring simultaneously distort and are crossed as cross connection structure, the left end briquetting and right end briquetting point
It is not fixed on the both ends of the big leaf spring and small leaf spring in cross connection structure, the side of the pendulum is connect with left end briquetting,
Right end briquetting is fixed on the side of fixed column, and left end briquetting, big leaf spring, small leaf spring and the right end briquetting of integrally connected hang down pendulum
Straight is fixed in fixed column, and volume tension spring one end is connected on the briquetting of left end, the other end using right end briquetting as fulcrum and is applied
Add certain power that is pulled up come to be connected to fixed top end after offsetting pendulum self gravity.
Further, the spring suspension null setting further includes zeroing motor, drive screw, zeroing gear and torsion bar
Axis, the top for being installed on fixed column of the torsion bar shaft rotation, the other end of the volume tension spring are fixed in torsion bar shaft, the tune
It is coaxially installed in torsion bar shaft after zero gear and motor-driven drive screw cooperation of returning to zero, when pendulum is with respect to above and below coil rack
When the differential capacitor piece appearance position deviation of side, zeroing motor drives torsion bar shaft rotation by drive screw and zeroing gear, turns round
Bar axis drives pendulum to carry out zero offset with respect to the differential capacitor piece of coil rack upper and lower sides by volume tension spring and left end briquetting
Intense adjustment is displaced until pendulum zero point resets.
Further, the feedback coil picked up on shake device also carries out the electronic measurement of power excitation by being actively entered electric current
Calibration.
Further, the circuit board be equipped with the current signal that feedback coil generates is picked up, is amplified, is improved and
The circuit of feedback.
Further, be respectively equipped on the jacket convenient for power supply and signal wire pass through afterwards with internal circuit board individually into
The signal incoming line and electric power incoming line mouth of line connection.
Further, the signal incoming line and electric power incoming line mouth, which are respectively equipped with, carries out waterproof sealing to the cable of interface
Clamping screw and anti-water cone, the anti-water cone be using hollow-cone body made of rubber material, signal cable or power supply line
Cable is connect in the airtight cavity that clamping screw and anti-water coning enter jacket with circuit board, is screwed clamping screw and is compressed anti-
Water cone comes enclosed signal incoming line or electric power incoming line mouth.
Further, the jacket is to use hollow cylindrical shell made of the engineering plastics with water-proof function,
And hollow cylindrical shell lower end forms the conical surface body being smoothly connected with tail cone.
The beneficial effects of the utility model are:
The utility model frequency band is low, reaches 2s, and high sensitivity reaches 500Vs/m；Small in size, light-weight, jacket is adopted
The hollow cylindrical shell made of the engineering plastics with water-proof function adapts to more, marsh, wetland, soil, sandstone etc.
Ground；The built-in spring with autoelectrinic zeroing hangs null setting, and engineering vibration can be widely applied up to 30 ° in the inclination angle that works
Dynamic measurement, geological prospecting, especially earth formation deep are explored, and are assessed for construction quality, and earth formation deep provides accurate valid data.
In use, seismic wave is reached by tail cone and picks up shake dress in jacket when the tail cone of jacket bottom is inserted into ground
When the base plate set, pendulum occurs micro-shifting by fixed column under the drive of seismic wave and moves, so that coil rack upper and lower sides
The differential capacitor chip capacitor of variable area changes, and feedback coil generates current signal according to capacitance change signal, and current signal is successively
It is exported, i.e., is converted by capacitance variations in a manner of DC voltage after conversion is picked up, amplifies, improved and fed back by circuit board
For corresponding voltage data, the vibrating state of the object to be detected is characterized, to complete the detection to seismic wave.
Moreover, spring suspension null setting is using the nested small leaf spring of big leaf spring and distortion is crossed as cross connection structure,
And by volume tension spring using right end briquetting be fulcrum and apply centainly be pulled up power come to connect after offsetting pendulum self gravity
In fixed top end, in this way, pendulum, which hangs null setting by spring, carries out zero offset intense adjustment and counteracting pendulum itself
Gravity after horizontally suspend be installed in fixed column, pendulum is in the way of spring mechanism, so that the volume of entire wave detector
It is all smaller with quality, well solve low-frequency vibration wave detector volume and weight problem bigger than normal.
In addition, signal incoming line and electric power incoming line mouth are respectively equipped with the locking screw for carrying out waterproof sealing to the cable of interface
Bolt and anti-water cone, so that power supply, signal use independent waterproof incoming line, the interference of anti-stop signal, and independent signal incoming line
It is arranged with moving-coil detector data collector interface compatibility, it is compact integral structure, small in size convenient for the acquisition and storage of signal,
It is light-weight, near earthquake, local earthquake can be effectively recorded, low frequency is clear, and high frequency is abundant, can be widely used for engineering vibration measurement, geology
Exploration.
[Detailed description of the invention]
Fig. 1 is the schematic view of the front view of the utility model；
Fig. 2 is the enlarged structure schematic diagram that shake device is picked up in the utility model.
Specific embodiment of the present utility model is described in more detail below in conjunction with attached drawing.
[specific embodiment]
A kind of active capacitor formula wave detector, as shown in Figure 1, including top cover 1, jacket 2, tail cone 3, circuit board 4 and picking up shake
Device 5, tail cone 3 are mounted on 2 bottom end of jacket, circuit board 4 and pick up the closed chamber that shake device 5 is installed on inside jacket 2
It is sealed in vivo and by top cover 1 and is fixed；Jacket 2 is using hollow cylinder shell made of the engineering plastics with water-proof function
Body, and hollow cylindrical shell lower end forms the conical surface body 20 being smoothly connected with tail cone 3, further respectively has and is convenient on jacket 2
Power supply and signal wire pass through the signal incoming line 21 and electric power incoming line mouth 22 connecting afterwards with the independent inlet wire of internal circuit board.
As depicted in figs. 1 and 2, which is installed on the upside of airtight cavity in jacket 2, and it is vertical that this picks up shake device 5
To the lower part for being installed on airtight cavity in jacket 2.Wherein, it includes base plate 50, fixed column 51, pendulum that this, which picks up shake device 5,
52 and spring hang null setting 53, base plate 50 is horizontally installed in the airtight cavity of jacket 2,51 right angle setting of fixed column
It is fixed on base plate side, the pendulum 52 being arranged on the upside of base plate 50 hangs null setting 53 by spring and carries out zero offset
What is horizontally suspended after the gravity of intense adjustment and counteracting pendulum 52 itself is installed in fixed column 51.Wherein, signal incoming line 21
The clamping screw 6 and anti-water cone 7 that waterproof sealing is carried out to the cable of interface, anti-water cone 6 are respectively equipped with electric power incoming line mouth 22
To pass through clamping screw 6 and anti-water cone 7 outside using hollow-cone body made of rubber material, signal cable or power cable
Is connect in the airtight cavity of clamshell 2 with circuit board 4, screw clamping screw 6 and compress anti-water cone 7 come enclosed signal incoming line 21 or
Electric power incoming line mouth 22, since independent waterproof incoming line, the interference of anti-stop signal, and independent signal is respectively adopted in power supply, signal
Incoming line 21 and moving-coil detector data collector interface compatibility are arranged, convenient for the acquisition and storage of signal；Meanwhile complete machine structure
It is compact, small in size, it is light-weight, near earthquake, local earthquake can be effectively recorded, low frequency is clear, and high frequency is abundant, can be widely used for engineering vibration
Dynamic measurement, geological prospecting.
Continue as depicted in figs. 1 and 2,52 middle part of pendulum is vertically through the coil for having setting symmetrical above and below and inner hollow
Skeleton 54, be located on coil rack 54 52 upper and lower sides of pendulum both ends it is oppositely wound have a pair of symmetrically arranged feedback coil 55,
And the magnetic pole 56 and package that insertion 55 center of feedback coil is respectively equipped at the feedback coil 55 at the every end of coil rack 54 are entirely
The magnet steel 57 of feedback coil 55.Also be symmetrically installed on the coil rack 54 of 52 upper and lower sides of pendulum one group it is anti-with every side respectively
It is electrically connected on the inside of feeder line circle 55 and horizontal positioned differential capacitor piece 58, the differential capacitor piece 58 is variable area formula differential capacitor,
Circuit board 4 is equipped with the circuit that the current signal that feedback coil 55 generates is picked up, amplifies, improves and is fed back；Coil bone
The differential capacitor piece 58 and pendulum 52 of 54 upper and lower sides of frame form differential capacitance, and when ground generates vibration motion, pendulum 52 is opposite
The differential capacitor piece 58 of upper and lower sides generates movement, so that differential capacitor piece 58 generates electric current, electric current is by the route on circuit board 4
Magnetic force is generated respectively after flowing into the feedback coil 55 of 54 upper and lower sides of coil rack after feedback system conditioning, and on coil rack 54
Magnetic pole 56 in downside magnetic cylinder 57 generates opposition under acting on respectively so that pendulum 52 be constantly in upper and lower sides two it is differential
The centre of capacitance sheet 58.
As shown in Fig. 2, spring suspension null setting 53 includes left end briquetting 530, big leaf spring 531, small leaf spring 532, right end
Briquetting 533 and volume tension spring 534, the nested small leaf spring 532 of big leaf spring 531 simultaneously distort and are crossed as cross connection structure, left end briquetting
530 and right end briquetting 533 be individually fixed in the both ends of big leaf spring 531 and small leaf spring 532 in cross connection structure, pendulum 52
Side connect with left end briquetting 530, right end briquetting 534 is fixed on the side of fixed column 51, the left end briquetting of integrally connected
530, big leaf spring 531, small leaf spring 532 and right end briquetting 533 are fixed on pendulum 52 is vertical in fixed column 51.
Wherein, continue as shown in Fig. 2, spring suspension null setting 53 further includes zeroing motor 535, drive screw 536, adjusts
Zero gear 537 and torsion bar shaft 538, the top for being installed on fixed column 51 that torsion bar shaft 538 rotates, zeroing gear 537 and zeroing electricity
The drive screw 536 that machine 535 drives is coaxially installed in torsion bar shaft 538 after cooperating；534 one end of volume tension spring is connected to left end pressure
On block 530, the other end is fulcrum with right end briquetting 534 and applies and certain be pulled up power come to offset 52 self gravity of pendulum
It is connected in the torsion bar shaft 538 on 51 top of fixed column afterwards.
When differential capacitor piece 58 appearance position deviation of the pendulum 52 with respect to 54 upper and lower sides of coil rack, return to zero motor 535
Torsion bar shaft 538 is driven to rotate by drive screw 536 and zeroing gear 537, torsion bar shaft 538 passes through volume tension spring 534 and left end pressure
The displacement intense adjustment that block 530 drives pendulum 52 to carry out zero offset with respect to the differential capacitor piece 38 of 54 upper and lower sides of coil rack is straight
It is resetted to 52 zero point of pendulum.Moreover, this, which picks up the feedback coil 55 on shake device 5, also carries out power excitation electricity by being actively entered electric current
The calibration of dynamic measurement.
The wave detector have frequency band is low, reaches 2s, high sensitivity reaches 500Vs/m；It is small in size, light-weight, jacket
Using hollow cylindrical shell made of the engineering plastics with water-proof function, it is more to adapt to marsh, wetland, soil, sandstone etc.
Place；The built-in spring with autoelectrinic zeroing hangs null setting, and engineering can be widely applied up to 30 ° in the inclination angle that works
Vibration measurement, geological prospecting, especially earth formation deep exploration, are assessed for construction quality, and earth formation deep provides accurate significant figure
According to.
In use, seismic wave is reached in jacket 2 by tail cone and picks up shake when the tail cone 3 of 2 bottom of jacket is inserted into ground
When the base plate 50 of device 5, pendulum 52 occurs micro-shifting by fixed column 51 under the drive of seismic wave and moves, so that coil bone
58 capacitance variations of differential capacitor piece of 54 upper and lower sides variable area of frame, feedback coil 55, which generates electric current according to capacitance change signal, to be believed
Number, current signal is successively exported in a manner of DC voltage after circuit board 4 is picked up, amplifies, improves and feeds back conversion, i.e.,
Corresponding voltage data is converted to by capacitance variations, characterizes the vibrating state of the object to be detected, to complete to seismic wave
Detection.
Moreover, spring suspension null setting 53 is using the nested small leaf spring 532 of big leaf spring 531 and distortion is crossed as cross company
Binding structure, and be fulcrum with right end briquetting 534 by volume tension spring 534 and apply and certain be pulled up power come to offset pendulum 52
Be connected to after self gravity in the torsion bar shaft 538 on 51 top of fixed column, in this way, pendulum 52 by spring hang null setting 53 into
What is horizontally suspended after the gravity of row zero offset intense adjustment and counteracting pendulum 52 itself is installed in fixed column 51,51 benefit of pendulum
Low-frequency vibration wave detector is well solved so that the volume and quality of entire wave detector are all smaller with the mode of spring mechanism
Volume and weight problem bigger than normal.
Embodiment described above is the preferred embodiment for being the utility model, and the reality of the utility model is not limited with this
Range is applied, it is all according to equivalence changes made by the shape of the utility model, construction and principle, the guarantor of the utility model should all be covered by
It protects in range.
Claims (9)
1. a kind of active capacitor formula wave detector, including top cover, jacket, tail cone, circuit board and shake device is picked up, tail cone installation is fixed
In jacket bottom end, circuit board shakes in the airtight cavity that device is installed on inside jacket with picking up and is fixed by top seal；Its
It is characterized in that:
The circuit board is installed on the upside of airtight cavity in jacket, it is described pick up shake device vertically to be installed in jacket
The lower part of airtight cavity；
The shake device that picks up includes that base plate, fixed column, pendulum and spring suspension null setting, the base plate are horizontally installed to
In the airtight cavity of jacket, the fixed column right angle setting is fixed on base plate side, the pendulum being arranged on the upside of the base plate
Hammer hangs null setting by spring and carries out the peace horizontally suspended after zero offset intense adjustment and the gravity of counteracting pendulum itself
Loaded in fixed column；
It is located at pendulum on the coil rack for having setting symmetrical above and below and inner hollow, coil rack vertically in the middle part of the pendulum
The both ends of upper and lower sides are oppositely wound a pair of symmetrically arranged feedback coil, distinguishes at the feedback coil at the every end of coil rack
The magnet steel of magnetic pole and the entire feedback coil of package equipped with insertion feedback coil center；
One group is also symmetrically installed on the coil rack of the pendulum upper and lower sides to be electrically connected with the feedback coil of every side inside respectively
And horizontal positioned differential capacitor piece；
The differential capacitor piece and pendulum of the coil rack upper and lower sides form differential capacitance, when ground generates vibration motion, pendulum
The differential capacitor piece for hammering opposite upper and lower sides into shape generates movement, so that differential capacitor piece generates electric current, electric current flows into coil rack or more
Magnetic force is generated after the feedback coil of side respectively, and generates reversed make respectively under the magnetic pole effect in coil rack upper and lower sides magnetic cylinder
Firmly, so that pendulum is constantly in the centre of two differential capacitor pieces of upper and lower sides.
2. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that the differential capacitor piece is change face
Product formula differential capacitor.
3. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that the spring hangs null setting
Including left end briquetting, big leaf spring, small leaf spring, right end briquetting and volume tension spring, the nested small leaf spring of the big leaf spring and distorting is crossed as
Cross connection structure, the left end briquetting and right end briquetting are individually fixed in big leaf spring and small pieces in cross connection structure
The side at the both ends of spring, the pendulum is connect with left end briquetting, and right end briquetting is fixed on the side of fixed column, a left side for integrally connected
End pressure block, big leaf spring, small leaf spring and right end briquetting are fixed on pendulum is vertical in fixed column, and volume tension spring one end is connected to
On the briquetting of left end, the other end certain power that is pulled up as fulcrum and applied come after to offset pendulum self gravity using right end briquetting
It is connected to fixed top end.
4. a kind of active capacitor formula wave detector according to claim 3, which is characterized in that the spring hangs null setting
It further include zeroing motor, drive screw, zeroing gear and torsion bar shaft, the top for being installed on fixed column of the torsion bar shaft rotation,
The other end of the volume tension spring is fixed in torsion bar shaft, same after the zeroing gear and motor-driven drive screw cooperation of returning to zero
Axis is installed in torsion bar shaft, and when differential capacitor piece appearance position deviation of the pendulum with respect to coil rack upper and lower sides, return to zero motor
Torsion bar shaft rotation is driven by drive screw and zeroing gear, torsion bar shaft drives pendulum with respect to line by volume tension spring and left end briquetting
The differential capacitor piece of ring framework upper and lower sides carries out the displacement intense adjustment of zero offset until pendulum zero point resets.
5. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that the feedback picked up on shake device
Coil also carries out the calibration that power motivates electronic measurement by being actively entered electric current.
6. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that the circuit board is equipped with to anti-
The circuit that the current signal that feeder line circle generates is picked up, amplifies, improves and feeds back.
7. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that be respectively equipped on the jacket
The signal incoming line and electric power incoming line mouth that connect afterwards with the independent inlet wire of internal circuit board are passed through convenient for power supply and signal wire.
8. a kind of active capacitor formula wave detector according to claim 7, which is characterized in that the signal incoming line and power supply
It is using rubber that incoming line, which is respectively equipped with to the clamping screw and anti-water cone, the anti-water cone of the cable progress waterproof sealing of interface,
Hollow-cone body made of glue material, signal cable or power cable pass through clamping screw and anti-water coning enters the closed of jacket
It is connect in cavity with circuit board, screws clamping screw and compress anti-water cone and come enclosed signal incoming line or electric power incoming line mouth.
9. a kind of active capacitor formula wave detector according to claim 1, which is characterized in that the jacket is to use to have
Hollow cylindrical shell made of the engineering plastics of water-proof function, and hollow cylindrical shell lower end forms and is smoothly connected with tail cone
Conical surface body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124168.XU CN209327587U (en) | 2018-12-17 | 2018-12-17 | A kind of active capacitor formula wave detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822124168.XU CN209327587U (en) | 2018-12-17 | 2018-12-17 | A kind of active capacitor formula wave detector |
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| CN209327587U true CN209327587U (en) | 2019-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554425A (en) * | 2019-09-04 | 2019-12-10 | 田晓峰 | Transverse wave seismic source device for seismic exploration |
-
2018
- 2018-12-17 CN CN201822124168.XU patent/CN209327587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554425A (en) * | 2019-09-04 | 2019-12-10 | 田晓峰 | Transverse wave seismic source device for seismic exploration |
| CN110554425B (en) * | 2019-09-04 | 2021-04-16 | 田晓峰 | Transverse wave seismic source device for seismic exploration |
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