CN207516571U - A kind of portable type ground high-precision three-component gradient magnetic survey system - Google Patents
A kind of portable type ground high-precision three-component gradient magnetic survey system Download PDFInfo
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- CN207516571U CN207516571U CN201721342800.7U CN201721342800U CN207516571U CN 207516571 U CN207516571 U CN 207516571U CN 201721342800 U CN201721342800 U CN 201721342800U CN 207516571 U CN207516571 U CN 207516571U
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- gradient magnetic
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Abstract
The utility model is related to a kind of portable type ground high-precision three-component gradient magnetic survey systems, including support platform system, gradient magnetic instrument system, navigation positioning system, gradient magnetic instrument system, navigation positioning system are movably arranged on navigation positioning system, and navigation positioning system surveys geographical coordinate for obtaining and preserving corresponding measuring point；Navigation positioning system plane positioning precision is up to grade, and measurement of higher degree precision is up to Centimeter Level, it can be ensured that ground three-component gradient magnet measuring precision.Gradient magnetic instrument system is used to measure the three-component gradient magnetic value on corresponding measuring point.During off working state, support platform system, gradient magnetic instrument system, navigation positioning system disassembled separation to each other, and it can realize that packing and separation carry, first, packing transport and separation carrying are carried out when being conducive to off working state, two are easy for comparatively fast being assembled into working condition implementation observation, global design is more reasonable, can significantly improve working efficiency.
Description
Technical field
The utility model is related to a kind of portable type ground high-precision three-component gradient magnetic survey systems, belong to geophysics
Gradient magnetic survey technical field in reconnoitring.
Background technology
At present, in geophysical exploration field the correlation theory of gradient magnetic survey and technology reach its maturity, it is domestic
Outer correlation ground high-precision gradient magnetic instrument emerges one after another, and has had to enter and reconnoitred construction field and carry out industrialization promotion
Ability；The many key technology difficulties for thus restricting ground high-precision gradient magnetic survey have been basically solved.Ground high-precision ladder
Spending magnetic survey technology has many advantages such as anomalous geologic body identification is high, data processing is simple, and developing prospect is very
It is wide.
However, domestic correlation ground high-precision gradient magnetic survey technology is limited always by conditions such as technology, equipment, for many years
Less to carry out the work, it is simple component gradient magnetic survey that the experiment sex work carried out on a small quantity is also mostly.Further, since the country does not have also at present
The gradient former of ground three-component gradient magnetic survey can disposably be realized by having, and conventional method is mostly with homemade simple crude spy
Bar measures to obtain three-component gradient magnetic data in three times by artificially adjusting probe location, is generally difficult to ensure observation system
Standard and consistency, thus accuracy of observation is difficult to ensure that, and whole work efficiency is relatively low.
With due to first-class, the domestic magnetic survey of three-component gradient (vertical gradient component Δ Tzz, horizontal north-south ladder
Degree component Δ Txx and horizontal East and West direction gradient component Δ Tyy) scientific research level is almost only rested on, production field is not almost opened
Exhibition, development are very slow.How under the prior art, appointed condition, by building a kind of standard, stabilization, portable ground height
Precision three-component gradient magnetic survey system with realize high-precision, expeditiously obtain ground high-precision three-component gradient magnetic survey number
According to being the key problem that solves of this technology needs.
Invention content
In view of the deficiencies of the prior art, the utility model provides a kind of be suitable under the conditions of various working removably
Face high-precision three-component gradient magnetic survey system.
The structure design of the utility model is reasonable, by building a kind of standard, stabilization, portable ground high-precision three-component ladder
Magnetic survey system is spent, ground high accuracy positioning is measured, high-precision three-component gradient magnetic survey is built in a comprehensive sight
It surveys in plateform system, can realize multigroup achievement number needed for simple and quick acquisition ground high-precision three-component gradient magnetic survey
According to the measurement request of high-precision three-component gradient magnetic survey work in geophysics ground under the conditions of various working can be met.
The technical solution of the utility model is：
A kind of portable type ground high-precision three-component gradient magnetic survey system, including support platform system, gradient magnetic
Instrument system, navigation positioning system, the gradient magnetic instrument system, the navigation positioning system are arranged on the support platform system
On, the navigation positioning system surveys geographical coordinate for obtaining corresponding measuring point；The gradient magnetic instrument system is for measurement pair
Answer the three-component gradient magnetic value on measuring point.
Support platform system, gradient magnetic instrument system, navigation positioning system are combined, it is advantageous that：When
By building the observation platform of a unified standard, can effectively evade because measuring device is nonstandard and manual operation is lack of standardization etc.
Caused systematic error can effectively improve accuracy of observation.Second is that using the measurement observation system of this unified standard, use is a set of
Gradient magnetic instrument, it is only necessary to which simply 3 probe locations of adjustment can read the gradient magnetic value of 3 components of high quality, make work
Efficiency is obviously improved.
Preferred according to the utility model, the gradient magnetic instrument system, the navigation positioning system are movably arranged on institute
It states in support platform system.
During off working state, support platform system, gradient magnetic instrument system, disassembled point to each other of navigation positioning system
From, and can realize that packing and separation carry.The utility model is by support platform system, gradient magnetic instrument system, navigator fix system
System is set as disassembled separation to each other, first, packing transport and separation carrying are carried out when being conducive to off working state, second is that just
Implement observation in the very fast working condition that is assembled into, global design is more reasonable, can significantly improve working efficiency.
Preferred according to the utility model, the support platform system includes tripod, scalable measuring point correction strut, the
One scalable feeler lever, two the second scalable feeler levers are vertically arranged the scalable measuring point correction under the platform of the tripod
Strut is vertically arranged the described first scalable feeler lever on the platform of the tripod, and the first scalable feeler lever top passes through
First orientation change-over switch connects one end of two second scalable feeler levers respectively, at described two second scalable feeler levers
In on same straight line.
The advantage designed herein, which is that it is possible to scalable measuring point correction strut, first on the platform for realizing tripod, to stretch
Contracting feeler lever, two the second scalable feeler levers in the horizontal direction and vertical upper freely converted and are fixed.
Preferred according to the utility model, the gradient magnetic instrument system is popped one's head in including gradient magnetic instrument, two, and described two
The other end of a second scalable feeler lever is respectively provided with there are one the probe, and two probes are connected respectively by connecting line
It is connected to the gradient magnetic instrument.
It is preferred according to the utility model, the length 900-1200mm of the scalable measuring point correction strut, three foot
The length of any foot tube is 1200-2000mm in frame.
The advantage designed herein be that it is possible to realize the liftoff variable height 1500mm-2500mm in vertical corresponding measuring point center,
Vertical direction two pops one's head in variable spacings as 1000mm -2000mm, and two probe variable spacing 1000mm of horizontal direction -
Three-component gradiometry under the multiple technologies indicator combination such as 2000mm, the scope of application is wider, can meet different observation requirements.
It is preferred according to the utility model, compass is additionally provided on the platform of the tripod (with 360 ° of angle marks
Know), air-bubble level, second orientation change-over switch (being identified equipped with 360 ° of angles), by described on the platform of the tripod
Second orientation change-over switch is flexibly connected the first scalable feeler lever.
Preferred according to the utility model, the first scalable feeler lever is the scalable hollow circle of nonmagnetic three section of aluminum
Pipe, the length of the first scalable feeler lever described in when shrinking completely is 500mm (being free of male connector length), first described in when stretching out completely
The length of scalable feeler lever is 1500mm (being free of male connector length), and the outer pipe outside diameter of the first scalable feeler lever is 40-45mm,
Middle pipe outside diameter is 35-40mm, interior pipe outside diameter is 30-35mm, outer tube, middle pipe, inner tube wall thickness be 5mm；
The second scalable feeler lever is the scalable hollow circular tube of nonmagnetic two section of aluminum, second can described in when shrinking completely
The length of flexible feeler lever is 500mm (being free of male connector length), and the length of the second scalable feeler lever is described in when stretching out completely
1000mm (be free of male connector length), the outer pipe outside diameter of the second scalable feeler lever are 30-35mm, interior pipe outside diameter is 25-30mm,
Outer tube, inner tube wall thickness be 5mm；
The first orientation change-over switch is the nonmagnetic stacked switch of aluminum, including three coupling nuts, respectively with it is described
First scalable feeler lever, two second scalable feeler lever connections.Realize after connection 2 aluminums on the same line without
The two scalable feeler lever of section of magnetism is rotated and is fixed in the range of ± 90 °.
Preferred according to the utility model, the gradient magnetic instrument is the proton gradient magnetometer of model GSM-19TG.
GSM-19TG proton gradient magnetometers are the high-precision proton gradient magnetometers of Canadian GEM companies production, and gradient former reading divides
Not rate 0.01nT/m, gradiometry precision is up to 0.2nT/m, gradiometry precision height.
Preferred according to the utility model, the navigation positioning system is the RTK receivers of model STONEX P9.
STONEX P9 type RTK receivers are thought to open up the novel RTK receivers of power mapping Science and Technology Ltd. production, the equipment energy for Guangzhou
Enough receive GPS satellite signal, GLONASS, GALILEO and Big Dipper satellite signal, P9 receivers be integrated with antenna, mainboard, radio station,
Receive the components such as antenna, bluetooth module, battery, movement station fully integratedization only needs the thin operation of hand that can work.Measurement accuracy can
Up to grade, the required precision of modern surveying is very suitable for, is capable of providing reliable Measurement results.
Navigation and positioning after theoretical measuring point is input in RTK handbooks, are utilized using STONEX P9 type RTK receivers
Point navigation feature is navigated.SDCORS network RTK patterns can be used in land plane positioning.It can be by STONEX during working condition
P9 type RTK receivers (antenna and handbook) are set in the support platform system, and measuring point data is preserved after system stabilization.
Preferred according to the utility model, a certain foot tube is equipped with nylon shoulder strap and receives clasp in the tripod.It is convenient for
It receives to prick and carry.
The working process of the utility model is as follows：
(1) when reaching predetermined measuring point according to navigation positioning system navigation, support platform system is built on corresponding measuring point；Tool
Body is：Tripod is installed first, stretches scalable measuring point correction strut, makes the corresponding point position of its alignment, then adjusts and solid
Fixed three support leg pipes, the horizontal bubble for observing air-bubble level on tripod platform carry out leveling, adjust tripod from upper brace
The calibrated altitude of the corresponding measuring point of top surface distance is 1000mm, and finally, the first scalable feeler lever is connected on tripod platform, the
One scalable feeler lever can realize that horizontal gradient measuring center height changes in the range of 1500mm-2500mm, the first scalable spy
Bar top connects one end of two the second scalable feeler levers, two the second scalable feeler levers by first orientation change-over switch respectively
It is on the same line；
(2) two probes are installed to the other end of two the second scalable feeler levers respectively, two probes are passed through into company respectively
Wiring is connected to gradient magnetic instrument, and the axis of two after connection center probe and two the second scalable feeler levers is in always
On line, two center probe spacing can adjust variation between 1000mm -2000mm；
(3) two probes are adjusted to vertical orientation up and down, carry out vertical gradient magnetic component and measure (Δ Tzz)；By two
Probe is adjusted to horizontal direction, and cooperation compass (is identified) with 360 ° of angles, (carried by rotating tripod upper brace
360 ° of angles mark) on second orientation change-over switch, two probes are further adjusted to north-south orientation, measure north-south
Gradient magnetic component (Δ Txx)；Two probes are adjusted to East and West direction orientation, measure East and West direction gradient magnetic component (Δ Tyy).
The beneficial effects of the utility model are：
1st, high-precision three-component gradient magnetic survey system in ground is built the sight in a unified standard by the utility model
It surveys on platform, can effectively evade the systematic error caused by measuring device is nonstandard with manual operation grade lack of standardization, it can be effective
Improve accuracy of observation.
2nd, the utility model can realize the liftoff variable height 1500mm-2500mm in vertical corresponding measuring point center, Vertical Square
It is 1000mm -2000mm, two probe variable spacing 1000mm -2000mm of horizontal direction etc. more to two probe variable spacings
Three-component gradiometry under kind technical indicator combination, the scope of application is wider, can meet different observation requirements.
3rd, after putting up observation system in a measurement point, using a set of gradient former, it is only necessary to simply 3 probe sides of adjustment
Position, can read the gradient magnetic value of 3 components of high quality, and efficiency is obviously improved.
4th, the utility model disclosure satisfy that the ground three-component gradient magnetic under a variety of orographic conditions such as Plain, hills, mountainous region
Work is surveyed, device is disassembled, is carried convenient for packing transport and separation, only needs during field construction two survey crews can be compared with
Fast to complete all to measure work, working efficiency is further promoted.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the enlarged structure vertical view of the platform of tripod described in the utility model；
Fig. 3 is the application drawing one of the utility model；
Fig. 4 is the application drawing two of the utility model；
1st, tripod, the 2, first scalable feeler lever, the 3, second scalable feeler lever, 4, scalable measuring point correction strut, 5, the
One orientation change-over switch, 6, navigation positioning system, 7, gradient magnetic instrument, 8, connecting line, 9, probe, 10, compass, 11, bubble
Level meter, 12, second orientation change-over switch.
Specific embodiment
The utility model is further qualified with embodiment with reference to the accompanying drawings of the specification, but not limited to this.
Embodiment 1
A kind of portable type ground high-precision three-component gradient magnetic survey system, including support platform system, gradient magnetic
Instrument system, navigation positioning system 6, gradient magnetic instrument system, navigation positioning system 6 are arranged in support platform system, and navigation is fixed
Position system 6 surveys geographical coordinate for obtaining and preserving corresponding measuring point；6 plane positioning precision of navigation positioning system is up to millimeter
Grade, measurement of higher degree precision is up to Centimeter Level, it can be ensured that ground three-component gradient magnet measuring precision.Gradient magnetic instrument system is used to survey
Three-component gradient magnetic value on the corresponding measuring point of amount.
Embodiment 2
According to a kind of portable type ground high-precision three-component gradient magnetic survey system described in embodiment 1, difference exists
In gradient magnetic instrument system, navigation positioning system 6 are movably arranged in support platform system.
During off working state, support platform system, gradient magnetic instrument system, disassembled point to each other of navigation positioning system 6
From, and can realize that packing and separation carry.The utility model is by support platform system, gradient magnetic instrument system, navigator fix system
System 6 is set as disassembled separation to each other, first, packing transport and separation carrying are carried out when being conducive to off working state, second is that just
Implement observation in the very fast working condition that is assembled into, global design is more reasonable, can significantly improve working efficiency.
Embodiment 3
A kind of portable type ground high-precision three-component gradient magnetic survey system according to embodiment 1 or 2, such as Fig. 1
It is shown, difference lies in,
Support platform system includes tripod 1, scalable measuring point correction strut 4, the first scalable feeler lever 2, two second
Scalable feeler lever 3 is vertically arranged scalable measuring point correction strut 4 under the platform of tripod 1, is set vertically on the platform of tripod 1
The first scalable feeler lever 2 is put, the first scalable 2 top of feeler lever connects two second respectively by first orientation change-over switch 5 can
One end of flexible feeler lever 3, two the second scalable feeler levers 3 are on the same line.The advantage designed herein is that it is possible to reality
Scalable measuring point correction strut 4, first scalable 2, two the second scalable feeler levers 3 of feeler lever are in water on the platform of existing tripod 1
Square to and vertical upper freely convert and fix.
Gradient magnetic instrument system includes 7, two probes 9 of gradient magnetic instrument, and the other end of two the second scalable feeler levers 3 is equal
It sets there are one probe 9, two probes 9 to be connected to gradient magnetic instrument 7 by connecting line 8 respectively.
During off working state, tripod 1, first scalable 2, two the second scalable feeler levers 3 of feeler lever can be separated from each other, just
It is carried in packing and separation.Navigation positioning system 6,7, two probes 9 of gradient magnetic instrument and its connecting line 8 can be also separated from each other.
The length of scalable measuring point correction strut 4 is 1000mm, and tripod 1 is nonmagnetic aluminum, total weight 2kg, three feet
Frame 1 includes three foot tubes, and the length of any foot tube is 1200-2000mm.
The advantage designed herein be that it is possible to realize the liftoff variable height 1500mm-2500mm in vertical corresponding measuring point center,
Vertical direction two pops one's head in 9 variable spacings as 1000mm -2000mm, and two 9 variable spacing 1000mm of probe of horizontal direction -
Three-component gradiometry under the multiple technologies indicator combination such as 2000mm, the scope of application is wider, can meet different observation requirements.
Compass 10 (being identified with 360 ° of angles), air-bubble level 11, second party are additionally provided on the platform of tripod 1
Position conversion switch 12 (identifies) equipped with 360 ° of angles, as shown in Fig. 2, passing through second orientation change-over switch on the platform of tripod 1
12 the first scalable feeler levers 2 of flexible connection.
First scalable feeler lever 2 is the scalable hollow circular tube of nonmagnetic three section of aluminum, the first scalable spy when shrinking completely
The length of bar 2 is 500mm (being free of male connector length), and the length of the first scalable feeler lever 2 is 1500mm (without public affairs when stretching out completely
Head length), the outer pipe outside diameter of the first scalable feeler lever 2 is 40-45mm, and middle pipe outside diameter is 35-40mm, interior pipe outside diameter is 30-
35mm, outer tube, middle pipe, inner tube wall thickness be 5mm；
Second scalable feeler lever 3 is the scalable hollow circular tube of nonmagnetic two section of aluminum, the second scalable spy when shrinking completely
The length of bar 3 is 500mm (being free of male connector length), and the length of the second scalable feeler lever 3 is 1000mm (without public affairs when stretching out completely
Head length), the outer pipe outside diameter of the second scalable feeler lever 3 is 30-35mm, and interior pipe outside diameter is 25-30mm, the wall thickness of outer tube, inner tube
It is 5mm；
First orientation change-over switch 5 is the nonmagnetic stacked switch of aluminum, including three coupling nuts, can be stretched with first respectively
2, two the second scalable feeler levers 3 of contracting feeler lever connect.Realize that nonmagnetic two section of 2 aluminums after connecting on the same line can
Flexible feeler lever is rotated and is fixed in the range of ± 90 °.
Gradient magnetic instrument 7 is the proton gradient magnetometer of model GSM-19TG.GSM-19TG proton gradient magnetometers are
The high-precision proton gradient magnetometer of Canadian GEM companies production, gradient former reading rate 0.01nT/m respectively, gradiometry precision
Up to 0.2nT/m, gradiometry precision is high.
Navigation positioning system 6 is the RTK receivers of model STONEX P9.STONEX P9 type RTK receivers are Guangzhou
Think open up power mapping Science and Technology Ltd. production novel RTK receivers, the equipment can receive GPS satellite signal, GLONASS,
GALILEO and Big Dipper satellite signal, P9 receivers are integrated with antenna, mainboard, radio station, receive the groups such as antenna, bluetooth module, battery
Part, movement station fully integratedization only need the thin operation of hand that can work.Measurement accuracy is very suitable for modern surveying up to grade
Required precision, be capable of providing reliable Measurement results.
Navigation and positioning after theoretical measuring point is input in RTK handbooks, are utilized using STONEX P9 type RTK receivers
Point navigation feature is navigated.SDCORS network RTK patterns can be used in land plane positioning.It can be by STONEX during working condition
P9 type RTK receivers (antenna and handbook) are set in the support platform system, and measuring point data is preserved after system stabilization.
A certain foot tube is equipped with nylon shoulder strap and receives clasp in tripod 1.It is carried convenient for receiving to prick.
The working process of the utility model is as follows：
(1) when reaching predetermined measuring point according to the navigation of navigation positioning system 6, support platform system is built on corresponding measuring point；
Specially：Tripod 1 is installed first, stretches scalable measuring point correction strut 4, makes the corresponding point position of its alignment, then adjusts
With fix three support leg pipes, the horizontal bubble for observing air-bubble level 11 on 1 platform of tripod carries out leveling, adjustment tripod 1 from
The calibrated altitude of the corresponding measuring point of upper brace top surface distance is 1000mm, finally, the first scalable feeler lever 2 is connected to tripod
On 1 platform, the first scalable feeler lever 2 can realize that horizontal gradient measuring center height changes in the range of 1500mm-2500mm, the
One scalable feeler lever top connects one end of two the second scalable feeler levers 3 by first orientation change-over switch 5 respectively, two
Two scalable feeler levers 3 are on the same line；
(2) two probes 9 are installed to the other end of two the second scalable feeler levers 3 respectively, two probes 9 are passed through respectively
Connecting line 8 is connected to gradient magnetic instrument 7, and two after connection, 9 centers of probe and the axis of two the second scalable feeler levers 3 are in
On same straight line, two 9 center spacing of probe can adjust variation between 1000mm -2000mm；
(3) two probes 9 are adjusted to vertical orientation up and down, as shown in figure 3, carrying out vertical gradient magnetic component measures (Δ
Tzz)；Two probes 9 are adjusted to horizontal direction, as shown in figure 4, cooperation compass 10 (being identified with 360 ° of angles), passes through
The second orientation change-over switch 12 on 1 upper brace of tripod (being identified with 360 ° of angles) is rotated, by two probes 9 further
North-south orientation is adjusted to, measures north-south gradient magnetic component (Δ Txx)；Two probes 9 are adjusted to East and West direction orientation, are measured
East and West direction gradient magnetic component (Δ Tyy).
Claims (10)
1. a kind of portable type ground high-precision three-component gradient magnetic survey system, which is characterized in that including support platform system,
Gradient magnetic instrument system, navigation positioning system, the gradient magnetic instrument system, the navigation positioning system are arranged on the support
On plateform system, the navigation positioning system surveys geographical coordinate for obtaining corresponding measuring point；The gradient magnetic instrument system is used
Three-component gradient magnetic value on the corresponding measuring point of measurement.
2. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 1, feature exist
In the gradient magnetic instrument system, the navigation positioning system are movably arranged in the support platform system.
3. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 1 or 2, feature
Be, the support platform system include tripod, scalable measuring point correction strut, the first scalable feeler lever, two second can
Flexible feeler lever, is vertically arranged the scalable measuring point correction strut under the platform of the tripod, on the platform of the tripod
The described first scalable feeler lever is vertically arranged, the first scalable feeler lever top is connected respectively by first orientation change-over switch
One end of two second scalable feeler levers, two second scalable feeler levers are on the same line.
4. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 3, feature exist
In the gradient magnetic instrument system includes gradient magnetic instrument, two probes, and the other end of two second scalable feeler levers is equal
It sets there are one the probe, two probes to be connected to the gradient magnetic instrument by connecting line respectively.
5. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 3, feature exist
In the length of the scalable measuring point correction strut is 900-1200mm, and the tripod includes three foot tubes, any foot
The length of pipe is 1200-2000mm.
6. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 3, feature exist
In, compass, air-bubble level, second orientation change-over switch are additionally provided on the platform of the tripod, the tripod
The first scalable feeler lever is flexibly connected by the second orientation change-over switch on platform.
7. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 3, feature exist
In the first scalable feeler lever is the scalable hollow circular tube of nonmagnetic three section of aluminum, and first is scalable described in when shrinking completely
The length of feeler lever be 500mm, the length of the first scalable feeler lever described in when stretching out completely be 1500mm, the first scalable spy
The outer pipe outside diameter of bar be 40-45mm, middle pipe outside diameter be 35-40mm, interior pipe outside diameter be 30-35mm, outer tube, middle pipe, inner tube wall
Thickness is 5mm；
The second scalable feeler lever is the scalable hollow circular tube of nonmagnetic two section of aluminum, and second is scalable described in when shrinking completely
The length of feeler lever be 500mm, the length of the second scalable feeler lever described in when stretching out completely be 1000mm, the second scalable spy
The outer pipe outside diameter of bar is 30-35mm, and interior pipe outside diameter is 25-30mm, the wall thickness of outer tube, inner tube is 5mm；
The first orientation change-over switch is the nonmagnetic stacked switch of aluminum, including three coupling nuts, respectively with described first
Scalable feeler lever, two second scalable feeler lever connections.
8. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 4, feature exist
In the gradient magnetic instrument is the proton gradient magnetometer of model GSM-19TG.
9. a kind of portable type ground high-precision three-component gradient magnetic survey system according to claim 1, feature exist
In the navigation positioning system is the RTK receivers of model STONEX P9.
10. according to a kind of any portable type ground high-precision three-component gradient magnetic survey systems of claim 4-8,
It is characterized in that, a certain foot tube is equipped with nylon shoulder strap and receives clasp in the tripod.
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| CN201721342800.7U CN207516571U (en) | 2017-10-18 | 2017-10-18 | A kind of portable type ground high-precision three-component gradient magnetic survey system |
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| CN201721342800.7U CN207516571U (en) | 2017-10-18 | 2017-10-18 | A kind of portable type ground high-precision three-component gradient magnetic survey system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655528A (en) * | 2021-08-05 | 2021-11-16 | 中国船舶重工集团公司第七一五研究所 | Backpack magnetic gradient measurement system |
| CN113655527A (en) * | 2021-08-05 | 2021-11-16 | 中国船舶重工集团公司第七一五研究所 | Backpack magnetic gradient measurement method |
-
2017
- 2017-10-18 CN CN201721342800.7U patent/CN207516571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655528A (en) * | 2021-08-05 | 2021-11-16 | 中国船舶重工集团公司第七一五研究所 | Backpack magnetic gradient measurement system |
| CN113655527A (en) * | 2021-08-05 | 2021-11-16 | 中国船舶重工集团公司第七一五研究所 | Backpack magnetic gradient measurement method |
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