CN110057281A - A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device - Google Patents
A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device Download PDFInfo
- Publication number
- CN110057281A CN110057281A CN201910371869.XA CN201910371869A CN110057281A CN 110057281 A CN110057281 A CN 110057281A CN 201910371869 A CN201910371869 A CN 201910371869A CN 110057281 A CN110057281 A CN 110057281A
- Authority
- CN
- China
- Prior art keywords
- pantograph
- capacitance sensor
- connect
- bar
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000005284 excitation Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 9
- 238000005259 measurement Methods 0.000 description 9
- 230000010349 pulsation Effects 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011896 sensitive detection Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 206010061688 Barotrauma Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/22—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in capacitance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention proposes a kind of ultrabroad band pantographs, including pantograph ontology, caliberating device and shield, pantograph ontology includes the first fixing end, base-bar, capacitance sensor and the second fixing end, the capacitance sensor is fixed in the second fixing end, capacitance sensor includes two blocks of capacitance sensor stators and one block of capacitance sensor movable plate, base-bar one end is installed in the first fixing end, and the base-bar other end is connect with capacitance sensor movable plate；It is external that shield is set to pantograph sheet；Caliberating device is set to inside shield, and is connect with base-bar.The present invention solves the problems, such as the influence of temperature and air pressure to pantograph precision using the design of hermetically sealed shield.The invention also provides a kind of installation methods and a kind of caliberating device that are applied to above-mentioned ultrabroad band pantograph.
Description
Technical field
The present invention relates to ground observation field, in particular to a kind of ultrabroad band pantograph and its its installation method also relate to
And a kind of caliberating device.
Background technique
Pantograph is the instrument of the opposite variation of accurate measurement earth's crust rock mass point-to-point transmission horizontal distance, is answered suitable for the observation earth's crust
Become and the consecutive variations of earth tide horizontal component, the changing rule for the horizontal strain of research Seismogenic Process provide data,
Also significant data is provided for earth elasticity research.
Multiple research discoveries are in earthquake and the daily monitoring of the earth tide station in recent years, the observation of dipmeter, gravimeter
Often there is abnormal " pulsation " Signal averaging on earth tide curve in data, pulsation has the several seconds multiple to tens of seconds etc. extremely for these
Main frequency-region signal, envelope are in " spindle " mostly, and the duration is not quite similar, and in this frequency band and broadband seismometer
There is good verifying relationship.Meanwhile being found in the abnormal Pulsation analysis of broadband seismometer, abnormal " pulsation " has 3-7s/
8-25s/2Hz/16Hz and multiple dominant frequency informations such as be longer than 30s.These " pulsation " may be by the slow cunning of Slow earthquake, tomography
A variety of geophysical phenomenas such as dynamic, non-volcano trembles, intermittent tremor, low frequency earthquake, tropical cyclone generate, wherein very much
" pulsation " signal accompanies with strong earthquakes, this may have certain help to the breakthrough of earthquake prediction.But since pantograph is seen
The relatively narrow influence of frequency measurement band, it is basic without discovery relevant information in the observation data of pantograph.
Pantograph observes data and directly serves in earthquake prediction as a kind of seismic precursor instrument.But all the time,
Data are observed using earth tide curve quality as evaluating standard.Therefore, smooth earth tide curve, pantograph are designing in order to obtain
On only account for ultralow frequency observation demand, the low pass hardware filtering of 60s is generally employed on circuit, leads to the observation of instrument
Frequency band is essentially DC-60s or so.For earthquake prediction, this directly results in a large amount of imminent earthquake high-frequency anomaly loss of learning.With
The demand of Earthquake analysis and prediction, the frequency band expanding of instrument become very necessary.
Conventional telescopic instrument is since sensor precision itself is inadequate, and in order to improve signal-to-noise ratio, the baseline length of instrument is generally
20 meters, when instrumental baseline is too long, baseline will be at suspension beam structure, it is necessary to increase intermediate support and guarantee baseline level, this can not
What is avoided leads to the influence of instrument stress in measurement direction.This had not only affected the Frequency Response of instrument, but also brought instrument
Measurement error.
Existing short-base line telescoping instrument theoretically can be realized wide band observation, but filter circuit still uses 60s low
Pass filter is unable to satisfy broadband observation requirements.Meanwhile it not being reached requirement by its precision of actual observation and practicability, shadow
The factor of sound specifically includes that (1) due to the shortening of baseline length, and temperature influences to increase on the precision of measurement, and entire design does not consider
The influence of temperature change；(2) influence of the barometric factor to instrument is not considered, and effects of air pressure is obvious etc. in actual observation.
Summary of the invention
In view of the above problems, it is necessary to propose a kind of to overcome the above problem or at least be partially solved stretching for the above problem
Contracting instrument.
A kind of ultrabroad band pantograph, including pantograph ontology, caliberating device and shield, in which:
Pantograph ontology includes the first fixing end, base-bar, capacitance sensor and the second fixing end, the capacitance sensor
It is fixed in the second fixing end, capacitance sensor includes two blocks of capacitance sensor stators and one block of capacitance sensor movable plate, baseline
Bar one end is installed in the first fixing end, and the base-bar other end is connect with capacitance sensor movable plate；
It is external that shield is set to pantograph sheet；
Caliberating device is set to inside shield, and is connect with base-bar.
Further, first fixing end includes the first fixing seat and calibration pedestal, and the first fixing seat is installed on calibration
On pedestal, base-bar is fixed in the first fixing seat, and caliberating device is set in calibration pedestal；Second fixing end includes the
Two fixing seats and zeroing pedestal, zeroing pedestal are installed in the second fixing end, and capacitance sensor is fixed on zeroing pedestal.
Further, the shield includes being coated at the baseline protective unit of the base-bar and protecting with the baseline
The connection of unit both ends covers on seal closure in the first fixing end and the second fixing end respectively.
Further, the baseline protective unit includes connecting tube and the protecting tube that connect with the connecting tube both ends, institute
Protecting tube is stated to connect with the seal closure.
Further, the ultrabroad band pantograph further includes the Automatic Zero Set connecting with the second fixing end, described
Automatic Zero Set uses micro-displacement mechanism.
Further, second fixing end includes zeroing pedestal and the second fixing seat, the second fixing seat slidably with
The pedestal that returns to zero connects, and the capacitance sensor is fixed in the second fixing seat, and the worm screw of the micro-displacement mechanism is fixed with second
Seat connection.
Further, the caliberating device includes: at least a pair of magnet, excitation coil, magnetostrictive rod, guide rod, sliding block
And measuring rod；The magnet is staggered relatively, and magnetostrictive rod uses giant magnetostrictive material, and magnetostrictive rod is located at the magnet
Between, excitation coil is looped around outside magnetostrictive rod, and guide rod passes through magnetostrictive rod, and the guide rod other end is connect with sliding block,
Measuring rod one end is fixedly connected on sliding block, and the measuring rod other end is connect with base-bar.
Further, the caliberating device further includes spring, and the spring one end is fixed on pantograph, the other end and institute
State sliding block connection.
Further, the base-bar uses indium steel pipe, and the capacitance sensor is passed using the differential capacitance of three-chip type
Sensor.
The invention also provides a kind of installation method of pantograph, the excavation pit on the complete basement rock of hole body, excavation of foundation pit
Complete after-pouring foundation pier, the pre-buried connecting plate at the top of foundation pier, respectively and even by the first fixing end of pantograph and the second fixing end
Fishplate bar connection, foundation pit inner wall are arranged waterproof coating, increase step in the middle part of foundation pit, and gasket is arranged on step and covers sealing plate,
Then gluing seals, and insulating layer is arranged on sealing plate.
The invention also provides a kind of caliberating devices, are applied to above-mentioned ultrabroad band pantograph, which includes extremely
Few a pair of magnet, excitation coil, magnetostrictive rod, guide rod, sliding block and measuring rod, the magnet is staggered relatively, magnetostrictive rod
Using giant magnetostrictive material, magnetostrictive rod is located between the magnet, and excitation coil is looped around outside magnetostrictive rod, guide rod
One end passes through magnetostrictive rod, and the guide rod other end is connect with sliding block, and measuring rod one end is fixedly connected on sliding block, and measuring rod is another
End is connect with ultrabroad band pantograph.
Based on the above-mentioned technical proposal, the present invention having the beneficial effect that compared with the prior art
Ultrabroad band pantograph of the invention includes including pantograph ontology, caliberating device and shield, and caliberating device is set
It is placed in inside shield, makes the structure of pantograph dexterity more compact, easy to carry and installation；Shield is set to pantograph sheet
In vitro, hermetically sealed design is carried out to pantograph, ensure that the relative constant of the temperature in pantograph, solves prior art medium temperature
Interference of the degree variation to pantograph measurement accuracy；Hermetically sealed design simultaneously, also ensures the environmental factors such as humidity, air pressure, solves
Capacitance sensor capacitor dielectric is easy the problem of changing and change with humidity, and protects capacitance sensor not by the external world
The interference of electromagnetic wave also alleviates the problem of instrument is vulnerable to air pressure interference, is greatly improved to the precision of instrument.The present invention makes
Use capacitance sensor as sensor, condenser type sensor precision height, bandwidth, structure are simple and have good dynamic special
Property, the accuracy and sensitivity of pantograph can be effectively improved；Simultaneously using if capacitance sensor, baseline length be can be set
It is relatively shorter, the observation simulation of pantograph can be improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ultrabroad band pantograph in the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of ultrabroad band pantograph in the embodiment of the present invention one, two；
Fig. 3 is the structural schematic diagram of caliberating device in the embodiment of the present invention two and four；
Fig. 4 is the schematic diagram of pantograph installation method in the embodiment of the present invention three；
The step of Fig. 5 is in the embodiment of the present invention three, pantograph installation method is schemed；
Fig. 6 is the schematic diagram of circuit process method in the embodiment of the present invention two.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
As shown in Figure 1, a kind of ultrabroad band pantograph, including pantograph ontology 1, caliberating device 2 and shield 3, it stretches
Instrument ontology 1 includes the first fixing end 11, base-bar 12, capacitance sensor 13 and the second fixing end 14, the capacitance sensor 13
It is fixed in the second fixing end 14, capacitance sensor 13 includes that two blocks of capacitance sensor stators 132 and one piece of capacitance sensor are dynamic
Piece 131,12 one end of base-bar are installed in the first fixing end 11, and 12 other end of base-bar is vertical with capacitance sensor movable plate 131
Connection, shield 3 are set to outside pantograph ontology 1；Caliberating device 2 is set to inside shield 3, and is connect with base-bar 12.
Ultrabroad band pantograph of the invention includes including pantograph ontology, caliberating device and shield, and caliberating device is set
It is placed in inside shield, makes the structure of pantograph dexterity more compact, easy to carry and installation；Shield is set to pantograph sheet
In vitro, hermetically sealed design is carried out to pantograph, ensure that the relative constant of the temperature in pantograph, solves prior art medium temperature
Interference of the degree variation to pantograph measurement accuracy；Hermetically sealed design simultaneously, also ensures the environmental factors such as humidity, air pressure, solves
Capacitance sensor capacitor dielectric is easy the problem of changing and change with humidity, and protects capacitance sensor not by the external world
The interference of electromagnetic wave also alleviates the problem of instrument is vulnerable to air pressure interference, is greatly improved to the precision of instrument.The present invention makes
Use capacitance sensor as sensor, condenser type sensor precision height, bandwidth, structure are simple and have good dynamic special
Property, the accuracy and sensitivity of pantograph can be effectively improved；Simultaneously using if capacitance sensor, baseline length be can be set
It is relatively shorter, the observation simulation of pantograph can be improved.
In some embodiments, as shown in Figure 1,12 one end of base-bar is installed in the first fixing end 11, mounting means can
To be: base-bar 12 is fixed across 11 blending bolt of the first fixing end or base-bar 12 is rested in the first fixing end 11 and is used in combination
Bolt is fixed.Base-bar 12 passes through 11 blending bolt of the first fixing end and fixes, and this mode can make base-bar fixed more
Securely, it is preferred to use this mode.In some embodiments, caliberating device 2 can cover on base-bar 12.
For preferably fixed caliberating device, while guaranteeing that caliberating device does not generate loading effect to base-bar, some
In embodiment, as shown in Fig. 2, the first fixing end 11 may include the first fixing seat 112 and calibration pedestal 111, the first fixing seat
112 are installed on calibration pedestal 111, and base-bar 12 is fixed in the first fixing seat 111, and caliberating device 2 is set to calibration pedestal
In 111.
Embodiment two
Compared with embodiment one, present embodiment illustrates a kind of specific structure of shield 3, shield 3 may include base
Line protective unit 32 and seal closure 31.Specifically, as shown in Figure 1, a kind of pantograph, including pantograph ontology 1, caliberating device 2
With shield 3, shield 3 may include being coated at the baseline protective unit 32 of the base-bar 4 and protecting with the baseline single
First 32 both ends connection covers on seal closure 31 in the first fixing end 11 and the second fixing end 14 respectively.It is necessary using capacitance sensing
Sealing problem is solved, simultaneously because instrumental baseline shortens, multi -components integral sealing mode as above can be used whole progress
Sealing while largely heat preservation, also solves the problems, such as that instrument is interfered vulnerable to air pressure.
In some implementation columns, baseline protective unit may include connecting tube 322 and connect with 322 both ends of connecting tube
Protecting tube 321, the protecting tube 321 connect with the seal closure 31.In actual use, base-bar 12 can occur to a certain degree
Bending, protecting tube 321 is connected using connecting tube 322 and is then covered on base-bar 12, can become transmitting to avoid corresponding and generate resistance
Power, to reduce the influence to pantograph precision.
In actual use, it is possible that the case where instrument displacement will exceed range ability, in order to guarantee instrument
Required precision can be set Automatic Zero Set (not marking in figure), and Automatic Zero Set is connect with the second fixing end 14, described
Automatic Zero Set uses micro-displacement mechanism.In order to which the zeroing of micro-displacement mechanism is better achieved, in some embodiments, such as scheme
Shown in 2, the second fixing end may include zeroing pedestal 142 and the second fixing seat 141, the second fixing seat 141 slidably with tune
The connection of zero pedestal 142, the capacitance sensor 13 is fixed in the second fixing seat 142, the worm screw of the micro-displacement mechanism and the
The connection of two fixing seats 141.Micro-displacement mechanism includes micro-displacement platform, worm screw, worm gear, motor, motor cabinet, and worm screw is fixed with second
Seat 141 connects.Motor drives worm gear, and with worm-drive, worm screw drives the second fixing seat 141 and capacitance sensor 13 mobile, real
Show the micro-displacement of capacitance sensor stator 132 to return to zero, when instrument displacement will exceed range ability, precision is carried out to it
Zero-bit adjustment.Most in the prior art to use hand reset, hand reset needs to open instrument or cannot carry out very to instrument
Good sealing, pressure gentle to the temperature of instrument have a significant impact.The present embodiment can be realized the automatic zero set of instrument, not only facilitate
It is accurate and eliminate interference to temperature and air pressure to instrument.
In actual use, there is sluggish and creep due to the characteristic of piezoelectric ceramics in caliberating device, cause its smart
Degree does not reach requirement, therefore the present embodiment proposes a kind of caliberating device based on giant magnetostrictive material, as shown in connection with fig. 3,
Caliberating device 2 may include: at least a pair of magnet 21, excitation coil 22, magnetostrictive rod 23, guide rod 24, sliding block 25 and measurement
Bar 28；The magnet 21 is staggered relatively, and magnetostrictive rod 23 uses giant magnetostrictive material, and magnetostrictive rod 23 is located at the magnetic
Between iron 21, excitation coil 22 is looped around outside magnetostrictive rod 23, and 24 one end of guide rod passes through magnetostrictive rod 23, and guide rod 24 is another
End is connect with sliding block 25, and 28 one end of measuring rod is fixedly connected on sliding block 25, and 28 other end of measuring rod is connect with base-bar 12.
Its working principle is that: magnet 21 is used to provide certain bias field, makes magnetostrictive rod 23 in suitable linear model
Enclose interior work.When needing to carry out staking-out work, starting excitation coil 22 makes magnetic field change, and magnetostrictive rod 23 occurs
It elongates or shortens, guide rod 24 and sliding block 25 is driven to slide.The effect of sliding block 25 is the measurement baseline of fixed pantograph, when sliding block 25
When generating displacement, it will generate micro-displacement on pantograph to carry out staking-out work.
It when magnetostriction refers to that object magnetizes in magnetic field, can be elongated or shortened in the direction of magnetization, when passing through coil
Curent change either change the ferrimagnets of its size generation significant changes when with magnet at a distance from, commonly referred to as iron
Magnetostriction materials.Its change in size is more much bigger than magnetostriction materials such as current ferrites, and generated energy
Greatly, then referred to as giant magnetostrictive material.Giant magnetostrictive material has following characteristics:
(1) magnetostriction coefficient is very big, is tens times of the materials such as Fe, Ni, is 3~5 times of piezoelectric ceramics.
(2) energy conversion efficiency of giant magnetostrictive material is between 49%~56%, and traditional magnetostriction materials are only
It is 9% or so.
(3) Curie temperature wants high more than piezoelectric ceramics 300 or more, therefore working at relatively high temperatures all can retentivity
It can stablize.
(4) energy density is big, is 400~800 times of Ni, is 12~38 times of piezoelectric ceramics, this characteristic is suitable for manufacture
High power device.
(5) response time for generating magnetostrictive effect is short, it may be said that the effect of magnetization and generation stress is almost simultaneously
Occur, ultra-high sensitive electromagnetic induction device can be manufactured using this characteristic.
(6) compression strength and large carrying capacity can work in the case where suppressing force environment.
(7) working band is wide, is applicable not only to several hundred Hz low frequency below, and be suitable for hyperfrequency.
There is sluggish and creep due to the characteristic of piezoelectric ceramics in the caliberating device of the prior art.The present embodiment is based on
The feature that the magnetostriction coefficient of magnetostriction materials is big, the response time is short, working band is wide, using electromagnetic driven structure, if
A kind of caliberating device for wideband pantograph has been counted, the precision of caliberating device and calibration range is made to be improved, to mention
The high precision of pantograph, has widened the frequency band of pantograph.
In some embodiments, as shown in figure 3, caliberating device 2 further includes spring 27,27 one end of spring is fixed on pantograph
On, the other end is connect with sliding block 25.Since the compression strength of giant magnetostrictive material is far longer than its tensile strength, use
Spring 27 makes magnetostrictive rod 23 work under a certain pressure, and the length variation range of magnetostrictive rod 23 is bigger, so that calibration
The calibration range of device 2 is wider.
In some embodiments, base-bar 12 uses indium steel pipe, and capacitance sensor 13 uses the differential capacitance of three-chip type
Sensor.The linear expansion coefficient of indium steel pipe is extremely low, there is good bending strength, can guarantee requirement of the instrument to resolving power.This
Invention shortens baseline length, realizes the miniaturization of instrument, the requirement for observing environment and installation can all substantially reduce；Together
When, since instrument is smaller, can multi -components be mountable on same basement rock, north and south, thing component observation data can be with bevel edge point
The observation data of amount carry out self checking, this provides innovative data supporting to pantograph data reliability.Since capacitor passes
The dielectric losses such as the air of sensor are small, and zero anode scrap generated using difference structure and when being connected into bridge type is small, therefore differential type electricity
Holding sensor allows circuit to carry out high magnification amplification, and instrument is made to have very high sensitivity；The capacitor of differential capacitance sensor
Value is generally unrelated with electrode material, this is conducive to the material for selecting temperature coefficient low, and because fever itself is minimum, can effectively change
Error caused by the kind influence due to environment such as temperature.
In actual use, in order to which frequency band is widened DC-100Hz, the 60s low-pass filtering of the prior art and minute are sampled
Number is adopted, and observation simulation requirement is unable to satisfy.To solve the above problems, the present embodiment proposes a kind of circuit process method, such as Fig. 6
It is shown, using the more stable sine wave exciting signal source of crystal oscillator and operational amplifier component frequency amplitude, and utilize
Phase sensitive detection technology extracts useful signal from the signal by noise jamming.Its working principle is that: using crystal oscillator and
Low drifting, low noise, low-power consumption the more stable sine wave exciting signal source of operational amplifier component frequency amplitude, instead of discrete
The oscillating circuit that constitutes of RLC, eliminate the unstable of frequency caused by temperature drift and amplitude well, improve capacitance sensing
The consistency of device circuit error reduces capacitance sensor caused sensitivity difference on circuit.Due to the output of sensor
The amplitude very little of voltage Δ U, signal-to-noise ratio are low, it is therefore necessary to useful signal can be just detected after plus and blowup；Interference signal
Probability very little with reference signal same frequency same-phase again can be with using the ability of the good compacting interference of phase sensitive detection technology
Useful signal is extracted from the signal by noise jamming.
Embodiment three
Since instrument is more sensitive to thermotonus, in order to which instrument is laid in the lesser place of the temperature difference to meet its observation
Demand, the present embodiment propose a kind of installation method of pantograph, can be applied to the ultrabroad band of embodiment one and embodiment two
Pantograph.Specifically, in conjunction with shown in Fig. 4 and Fig. 5, the installation method of this pantograph includes:
S201: the excavation pit on the complete basement rock of hole body.
S202: building foundation pier 101 in foundation pit bottom pour mold, in the 101 pre-buried connecting plate 102 in top of foundation pier.
S203: the first fixing end 11 of pantograph and the second fixing end 14 are connect with connecting plate 102 respectively.
S204: waterproof coating 103 is coated in foundation pit inner wall.
S205: gasket and covering sealing plate 104 on the step sticker in the middle part of foundation pit, and then gluing seals.
S206: insulating layer 105 is set on sealing plate 104.
This installation method inhibits the variation of temperature well, largely improves temperature change to apparatus measures
The interference of precision.
Example IV
The present embodiment proposes a kind of caliberating device, for the ultrabroad band pantograph in embodiment one, embodiment two, such as
Shown in Fig. 3, which includes at least a pair of magnet 21, excitation coil 22, magnetostrictive rod 23, guide rod 24,25 and of sliding block
Measuring rod 28；The magnet 21 is staggered relatively, and magnetostrictive rod 23 uses giant magnetostrictive material, and magnetostrictive rod 23 is located at institute
It states between magnet 21, excitation coil 22 is looped around outside magnetostrictive rod 23, and 24 one end of guide rod passes through magnetostrictive rod 23, guide rod 24
The other end is connect with sliding block 25, and 28 one end of measuring rod is fixedly connected on sliding block 25, and 28 other end of measuring rod is connect with pantograph.
This caliberating device has the characteristics that precision height and calibration range are wide, compact-sized simple, can be used for embodiment one,
Ultrabroad band pantograph in embodiment two can improve the stated accuracy of pantograph, widen the observation simulation of pantograph, certainly
It can be used in other pantographs.
It should be understood that the particular order or level of the step of during disclosed are the examples of illustrative methods.Based on setting
Count preference, it should be appreciated that in the process the step of particular order or level can be in the feelings for the protection scope for not departing from the disclosure
It is rearranged under condition.Appended claim to a method is not illustratively sequentially to give the element of various steps, and not
It is to be limited to the particular order or level.
In above-mentioned detailed description, various features are combined together in single embodiment, to simplify the disclosure.No
This published method should be construed to reflect such intention, that is, the embodiment of theme claimed needs clear
The more features of the feature stated in each claim to Chu.On the contrary, that reflected such as appended claims
Sample, the present invention are in the state fewer than whole features of disclosed single embodiment.Therefore, appended claims is special
This is expressly incorporated into detailed description, and wherein each claim is used as alone the individual preferred embodiment of the present invention.
Description above includes the citing of one or more embodiments.Certainly, in order to describe above-described embodiment and description portion
The all possible combination of part or method is impossible, but it will be appreciated by one of ordinary skill in the art that each implementation
Example can do further combinations and permutations.Therefore, embodiment described herein is intended to cover fall into the appended claims
Protection scope in all such changes, modifications and variations.In addition, with regard to term used in specification or claims
The mode that covers of "comprising", the word is similar to term " includes ", just as " including " solved in the claims as transitional word
As releasing.In addition, the use of any one of specification in claims term "or" being to indicate " non-exclusionism
Or ".
Claims (10)
1. a kind of ultrabroad band pantograph, which is characterized in that including pantograph ontology, caliberating device and shield, in which:
Pantograph ontology includes the first fixing end, base-bar, capacitance sensor and the second fixing end, and the capacitance sensor is fixed
In in the second fixing end, capacitance sensor includes two blocks of capacitance sensor stators and one block of capacitance sensor movable plate, base-bar one
End is installed in the first fixing end, and the base-bar other end is connect with capacitance sensor movable plate；
It is external that shield is set to pantograph sheet；
Caliberating device is set to inside shield, and is connect with base-bar.
2. ultrabroad band pantograph as described in claim 1, which is characterized in that the shield includes being coated at the baseline
It the baseline protective unit of bar and connect, cover in the first fixing end and the second fixing end respectively with baseline protective unit both ends
Seal closure.
3. ultrabroad band pantograph as claimed in claim 2, which is characterized in that the baseline protective unit include connecting tube and
The protecting tube connecting with the connecting tube both ends, the protecting tube are connect with the seal closure.
4. ultrabroad band pantograph as described in claim 1, which is characterized in that further include connect with the second fixing end it is automatic
Balancing controls, the Automatic Zero Set use micro-displacement mechanism.
5. ultrabroad band pantograph as claimed in claim 4, which is characterized in that second fixing end include zeroing pedestal and
Second fixing seat, the second fixing seat are slidably connect with zeroing pedestal, and the capacitance sensor is fixed in the second fixing seat,
The worm screw of the micro-displacement mechanism connect with the second fixing seat.
6. ultrabroad band pantograph as described in claim 1, which is characterized in that the caliberating device includes: at least a pair of of magnetic
Iron, excitation coil, magnetostrictive rod, guide rod, sliding block and measuring rod；The magnet is staggered relatively, and magnetostrictive rod uses super magnetic
Telescopic material is caused, magnetostrictive rod is located between the magnet, and excitation coil is looped around outside magnetostrictive rod, and guide rod passes through
Magnetostrictive rod, the guide rod other end are connect with sliding block, and measuring rod one end is fixedly connected on sliding block, the measuring rod other end and baseline
Bar connection.
7. ultrabroad band pantograph as claimed in claim 6, which is characterized in that the caliberating device further includes spring, described
Spring one end is fixed on pantograph, and the other end is connected with the slide block.
8. ultrabroad band pantograph as described in claim 1, which is characterized in that the base-bar uses indium steel pipe, the electricity
Hold the differential capacitance sensor that sensor uses three-chip type.
9. a kind of installation method of pantograph is applied to ultrabroad band pantograph as described in claim 1, which is characterized in that
The installation method includes: the excavation pit on the complete basement rock of hole body, and excavation of foundation pit completes after-pouring foundation pier, pre- at the top of foundation pier
Connecting plate is buried, the first fixing end of pantograph and the second fixing end are connect with connecting plate respectively, foundation pit inner wall is arranged waterproof and applies
Layer, foundation pit middle part increase step, and gasket is arranged on step and covers sealing plate, and then gluing seals, and is arranged on sealing plate and keeps the temperature
Layer.
10. a kind of caliberating device is applied to ultrabroad band pantograph as described in claim 1, which is characterized in that the calibration
Device includes at least a pair of magnet, excitation coil, magnetostrictive rod, guide rod, sliding block and measuring rod, and the magnet is staggered relatively,
Magnetostrictive rod uses giant magnetostrictive material, and magnetostrictive rod is located between the magnet, and excitation coil is looped around mangneto and stretches
Outside contracting stick, guide rod passes through magnetostrictive rod, and the guide rod other end is connect with sliding block, and measuring rod one end is fixedly connected on sliding block
On, the measuring rod other end is connect with ultrabroad band pantograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371869.XA CN110057281A (en) | 2019-05-06 | 2019-05-06 | A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371869.XA CN110057281A (en) | 2019-05-06 | 2019-05-06 | A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110057281A true CN110057281A (en) | 2019-07-26 |
Family
ID=67322254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910371869.XA Pending CN110057281A (en) | 2019-05-06 | 2019-05-06 | A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110057281A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198545A (en) * | 2020-09-17 | 2021-01-08 | 中国地震局地震研究所 | Rod type expansion instrument for measuring distance change between two horizontal points of reservoir dam |
| CN112595291A (en) * | 2020-11-27 | 2021-04-02 | 中国地震局地震研究所 | Totally-enclosed half-tank type broadband short-baseline water pipe inclinometer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118150A (en) * | 2007-08-30 | 2008-02-06 | 中国地震局地震研究所 | Ultrashort baseline extensometer |
| CN202083345U (en) * | 2011-03-01 | 2011-12-21 | 欧阳祖熙 | Displacement sensing device for borehole strain meter |
| CN102914265A (en) * | 2012-10-09 | 2013-02-06 | 哈尔滨工程大学 | Optical fiber strain gauge and high-sensitivity disc-type displacement sensor with ultra-short base line |
| CN209910578U (en) * | 2019-05-06 | 2020-01-07 | 中国地震局地震研究所 | Ultra-wide band extensometer and calibration device |
-
2019
- 2019-05-06 CN CN201910371869.XA patent/CN110057281A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101118150A (en) * | 2007-08-30 | 2008-02-06 | 中国地震局地震研究所 | Ultrashort baseline extensometer |
| CN202083345U (en) * | 2011-03-01 | 2011-12-21 | 欧阳祖熙 | Displacement sensing device for borehole strain meter |
| CN102914265A (en) * | 2012-10-09 | 2013-02-06 | 哈尔滨工程大学 | Optical fiber strain gauge and high-sensitivity disc-type displacement sensor with ultra-short base line |
| CN209910578U (en) * | 2019-05-06 | 2020-01-07 | 中国地震局地震研究所 | Ultra-wide band extensometer and calibration device |
Non-Patent Citations (1)
| Title |
|---|
| 李家明等: "超短基线伸缩仪的研制", 大地测量与地球动力学, vol. 29, no. 4, 15 August 2009 (2009-08-15), pages 144 - 147 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198545A (en) * | 2020-09-17 | 2021-01-08 | 中国地震局地震研究所 | Rod type expansion instrument for measuring distance change between two horizontal points of reservoir dam |
| CN112595291A (en) * | 2020-11-27 | 2021-04-02 | 中国地震局地震研究所 | Totally-enclosed half-tank type broadband short-baseline water pipe inclinometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9300409B1 (en) | Rotational electrochemical seismometer using magnetohydrodynamic technology and related methods | |
| Riedesel et al. | Limits of sensitivity of inertial seismometers with velocity transducers and electronic amplifiers | |
| Scudero et al. | MEMS technology in seismology: A short review | |
| CN202083345U (en) | Displacement sensing device for borehole strain meter | |
| CN102023309B (en) | Maglev electromagnetic induction cymoscope | |
| US8749241B2 (en) | Methods and apparatus for geophysical prospecting to detect bodies of fluids in underground formations | |
| CN209910578U (en) | Ultra-wide band extensometer and calibration device | |
| CN110057281A (en) | A kind of ultrabroad band pantograph and its installation method, a kind of caliberating device | |
| CN201340456Y (en) | Deep-well wideband seismograph | |
| CN103344926B (en) | A kind of magnetoelectric material magnetic performance synchronous testing device | |
| Ponceau et al. | Low-noise broadband microbarometers | |
| CN205404830U (en) | Dynamic balance formula wide band vibrations wave detector | |
| Nief et al. | New generations of infrasound sensors: technological developments and calibration | |
| Hou et al. | Piezoelectric geophone: a review from principle to performance | |
| CN1109900C (en) | Ultrawide-band seismometer | |
| Block et al. | Tidal to seismic frequency investigations with a quartz accelerometer of new geometry | |
| CN102279414B (en) | Machine core of MEMS (Micro Electro Mechanical System) simulation detector | |
| CN207780261U (en) | A kind of piezoelectric seismometer | |
| Barzilai et al. | Improving the performance of a geophone through capacitive position sensing and feedback | |
| Johnston et al. | Short‐period strain (0.1–105 s): Near‐source strain field for an earthquake (ML 3.2) near San Juan Bautista, California | |
| CN105182256A (en) | Heavy-current low-power magnetic field signal difference acquisition apparatus | |
| CN109471160B (en) | Moving coil detector for simultaneously detecting speed and acceleration | |
| CN207851319U (en) | A kind of both arms piezoelectric seismometer | |
| CN106019362A (en) | Moving coil type low-frequency expanded geophone | |
| CN207780260U (en) | A kind of piezoelectric seismometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |