CN103185871A - Method for measuring vertical component of ship induced magnetic field in one direction - Google Patents
Method for measuring vertical component of ship induced magnetic field in one direction Download PDFInfo
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- CN103185871A CN103185871A CN2013100745151A CN201310074515A CN103185871A CN 103185871 A CN103185871 A CN 103185871A CN 2013100745151 A CN2013100745151 A CN 2013100745151A CN 201310074515 A CN201310074515 A CN 201310074515A CN 103185871 A CN103185871 A CN 103185871A
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Abstract
The invention discloses a method for measuring a vertical component of a ship induced magnetic field in one direction. The method comprises the steps of winding a terrestrial magnetism simulation coil around a ship, electrifying the coil to simulate to generate different terrestrial magnetic fields, and decomposing the vertical component of the induced magnetic field by using a magnetic field generated by magnetizing the ship by different terrestrial magnetic fields. The method for simulating to generate the terrestrial magnetic field by adopting the terrestrial magnetism simulation coil realizes the fact that the vertical component of the ship induced magnetic field is measured in one direction, solves the problem that the existing method for measuring the vertical component of the ship induced magnetic field needs to turn the direction and transfer the location, and has the advantages of high measuring efficiency, high decomposing speed, and manpower and material resource saving.
Description
Technical field
The present invention relates to the demagnetization technical field, refer to that particularly a kind of folk prescription is to the method for measuring boats and ships induced field vertical component.
Technical background
Ferromagnetic objects such as boats and ships are under the effect of magnetic field of the earth, can produce induced magnetism, and then produce induced field around the ferromagnetic object, induced field is a kind of magnetic field that changes with external magnetic field (mainly being the magnetic field of the earth), it is relevant with factors such as the real-time position of ferromagnetic object, direction, attitudes, thereby is a kind of temporal effect magnetic field.The size of ferromagnetic object induced magnetism is relevant with following factors:
1) size of terrestrial magnetic field, ferromagnetic object position;
2) direction of ferromagnetic object, attitude etc.;
The magnetic property of used steel when 3) ferromagnetic object is built;
4) ferromagnetic object shape, size and structure.
If the material that the ferromagnetic object of same type is built is identical, structure is identical, and then its induced magnetism should be identical.
When ferromagnetic object is demagnetized, need accurately to measure the vertical component of its induced field, thus can be to its processing of demagnetizing.
Generally speaking, the vertical component of the horizontal induced field of ferromagnetic object is decomposed with the same point magnetic-field measurement data that Ci Dong, magnetic west or magnetic south, two of magnetic north differ 180 ° of directions; The vertical component of vertical induced field is decomposed in the magnetic-field measurement data of different regions with ferromagnetic object.
This induced field decomposition method is easy to realize for small-sized ferromagnetic object, still, for large-scale ferromagnetic objects such as boats and ships, it is carried out reverses its direction need waste lot of manpower and material resources, and is very inconvenient; And for the measurement of vertical induced field vertical component, need that again measured target is transferred to the another one area to measure, more inconvenient like this.Therefore, realize that folk prescription is extremely important to the vertical component of measuring the ferromagnetic object induced field, have very important realistic meaning.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of folk prescription to the method for measuring boats and ships induced field vertical component, this method has solved the problem that needs to turn tested boats and ships direction in the existing measurement ferromagnetic object induced field vertical component method, can be applicable to the measurement of the vertical induced field vertical component of large-scale ferromagnetic objects such as boats and ships.
For realizing this purpose, the designed folk prescription of the present invention is characterized in that to the method for measuring boats and ships induced field vertical component it comprises the steps:
Step 1): before hull to be measured enters checkout area, measure the vertical component Z of terrestrial magnetic field by Magnetic Sensor
D1
Step 2): according to the design size of hull, coiling can cover bow to the vertical earth magnetism former-wound coil of the multiturn of stern, and the inner ring of described vertical earth magnetism former-wound coil can wrap the horizontal outline of hull; Coiling can cover two horizontal earth magnetism former-wound coils of hull port and starboard; Coiling can cover the vertical earth magnetism former-wound coil of hull bottom;
Step 3): only to vertical earth magnetism former-wound coil energising, make vertical earth magnetism former-wound coil center produce uniformly vertically simulation terrestrial magnetic field, the numerical value of hub of a spool changes of magnetic field is coil 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D2
Step 4): only two horizontal earth magnetism former-wound coils that can cover the hull port and starboard of above-mentioned coiling are switched on, make two horizontal earth magnetism former-wound coils produce uniformly laterally simulation terrestrial magnetic field, the numerical value that two horizontal earth magnetism former-wound coil central magnetic fields change is two horizontal earth magnetism former-wound coils 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that two horizontal earth magnetism former-wound coil centers contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D3
Step 5): only the vertical earth magnetism former-wound coil that can cover hull bottom of above-mentioned coiling is switched on, make vertical earth magnetism former-wound coil produce uniform vertical simulation terrestrial magnetic field, the numerical value that vertical earth magnetism former-wound coil central magnetic field changes is vertical earth magnetism former-wound coil 2 times of geomagnetic field vertical component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D4
Step 6): the power supply that disconnects above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two horizontal earth magnetism former-wound coils, bring hull into checkout area then, and hull sent in above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two the horizontal earth magnetism former-wound coil region surrounded, measure magnetic field and the geomagnetic field vertical component sum that hull produces by Magnetic Sensor, be designated as Z
1
Step 7): only to vertical earth magnetism former-wound coil energising and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, vertically earth magnetism former-wound coil magnetic field and terrestrial magnetic field vertical component sum by Magnetic Sensor then, be designated as Z
2
Step 8): the vertical component Z that draws longitudinal induction magnetic field according to following formula
Ix
So namely finished the measurement of the longitudinal induction magnetic field vertical component of hull to be measured;
Step 9): only to two horizontal earth magnetism former-wound coils energisings that can cover the hull port and starboard and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, two magnetic field and geomagnetic field vertical component sums that horizontal earth magnetism former-wound coil produces by Magnetic Sensor then, be designated as Z
3
Step 10) draws the vertical component Z in transvercal induction magnetic field according to following formula
Iy
So namely finished the measurement of the transvercal induction magnetic field vertical component of hull to be measured;
Step 11): only to the vertical earth magnetism former-wound coil energising that can cover hull bottom and produce 2 times of geomagnetic field vertical components, measure magnetic field and the geomagnetic field vertical component sum of the magnetic field of tested hull, the generation of vertical earth magnetism former-wound coil then by Magnetic Sensor, be designated as Z
4
Step 12): the vertical component Z that draws vertical induced field according to following formula
Iz
So namely having finished the vertical component of the vertical induced field of hull to be measured measures.
Described vertical earth magnetism former-wound coil is solenoid coil.
The described vertical earth magnetism former-wound coil that can cover hull bottom is rectangle earth magnetism former-wound coil with two horizontal earth magnetism former-wound coils that can cover the hull port and starboard.
The method that the present invention adopts the simulation of earth magnetism former-wound coil to produce the terrestrial magnetic field realizes that folk prescription is to the vertical component of measuring the boats and ships induced field, solved the problem that needs reverses its direction and transfer position in the existing measurement boats and ships induced field vertical component method, had and measure the advantage that efficient height, decomposition rate are fast, use manpower and material resources sparingly.
Description of drawings
Fig. 1 is vertical earth magnetism former-wound coil synoptic diagram among the present invention;
Fig. 2 is horizontal earth magnetism former-wound coil synoptic diagram among the present invention;
Fig. 3 is the horizontal cross-sectional synoptic diagram of earth magnetism former-wound coil among the present invention;
Fig. 4 is vertical earth magnetism former-wound coil synoptic diagram among the present invention;
Fig. 5 is the vertical cross-sectional synoptic diagram of earth magnetism former-wound coil among the present invention;
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
As everyone knows, the terrestrial magnetic field makes it have the magnetic of three directions to the magnetization of ferromagnetic object: vertical magnetism, vertical magnetic, horizontal magnetic.It is synthetic by fixed magnetic and two parts of induced magnetism that the magnetic of ferromagnetic object can be regarded as, wherein fixed magnetic under certain condition, visually in the certain hour fix constantly, change irrelevant with the terrestrial magnetic field; Induced magnetism changes pro rata with the terrestrial magnetic field.Because the magnetic field of ferromagnetic object is a vector field, for easy analysis, generally every kind of magnetic field is resolved into the component of three directions again, i.e. vertical component, longitudinal component, cross stream component.
Vertical component for the ferromagnetic object induced field, three kinds of the vertical components that the vertical component in vertical component, transvercal induction magnetic field in longitudinal induction magnetic field and vertical induced field are generally arranged, the measurement of the vertical component of the vertical component of utilizing following method can be implemented in to finish boats and ships longitudinal induction magnetic field under the situation of not turning tested boats and ships direction, the vertical component in transvercal induction magnetic field and vertical induced field.
A kind of folk prescription is characterized in that to the method for measuring boats and ships induced field vertical component it comprises the steps:
Step 1): before hull to be measured enters checkout area, measure the vertical component Z of terrestrial magnetic field by Magnetic Sensor
D1
Step 2): according to the design size of hull, coiling can cover bow to the vertical earth magnetism former-wound coil of the multiturn of stern (as shown in Figure 1), and the inner ring of described vertical earth magnetism former-wound coil can wrap the horizontal outline of hull; Coiling can cover two horizontal earth magnetism former-wound coils (as shown in Figures 2 and 3) of hull port and starboard; Coiling can cover the vertical earth magnetism former-wound coil (as shown in Figure 4 and Figure 5) of hull bottom;
Step 3): only to vertical earth magnetism former-wound coil energising, make vertical earth magnetism former-wound coil center produce uniformly vertically simulation terrestrial magnetic field, the numerical value of hub of a spool changes of magnetic field is coil 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D2
Step 4): only two horizontal earth magnetism former-wound coils that can cover the hull port and starboard of above-mentioned coiling are switched on, make two horizontal earth magnetism former-wound coils produce uniformly laterally simulation terrestrial magnetic field, the numerical value that two horizontal earth magnetism former-wound coil central magnetic fields change is two horizontal earth magnetism former-wound coils 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that two horizontal earth magnetism former-wound coil centers contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D3
Step 5): only the vertical earth magnetism former-wound coil that can cover hull bottom of above-mentioned coiling is switched on, make vertical earth magnetism former-wound coil produce uniform vertical simulation terrestrial magnetic field, the numerical value that vertical earth magnetism former-wound coil central magnetic field changes is vertical earth magnetism former-wound coil 2 times of geomagnetic field vertical component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D4
Step 6): the power supply that disconnects above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two horizontal earth magnetism former-wound coils, bring hull into checkout area then, and hull sent in above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two the horizontal earth magnetism former-wound coil region surrounded, measure magnetic field and the geomagnetic field vertical component sum that hull produces by Magnetic Sensor, be designated as Z
1
Step 7): only to vertical earth magnetism former-wound coil energising and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, vertically earth magnetism former-wound coil magnetic field and terrestrial magnetic field vertical component sum by Magnetic Sensor then, be designated as Z
2
Step 8): the vertical component Z that draws longitudinal induction magnetic field according to following formula
Ix
So namely finished the measurement of the longitudinal induction magnetic field vertical component of hull to be measured;
Step 9): only to two horizontal earth magnetism former-wound coils energisings that can cover the hull port and starboard and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, two magnetic field and geomagnetic field vertical component sums that horizontal earth magnetism former-wound coil produces by Magnetic Sensor then, be designated as Z
3
Step 10) draws the vertical component Z in transvercal induction magnetic field according to following formula
Iy
So namely finished the measurement of the transvercal induction magnetic field vertical component of hull to be measured;
Step 11): only to the vertical earth magnetism former-wound coil energising that can cover hull bottom and produce 2 times of geomagnetic field vertical components, measure magnetic field and the geomagnetic field vertical component sum of the magnetic field of tested hull, the generation of vertical earth magnetism former-wound coil then by Magnetic Sensor, be designated as Z
4
Step 12): the vertical component Z that draws vertical induced field according to following formula
Iz
So namely having finished the vertical component of the vertical induced field of hull to be measured measures.
In the technique scheme, described vertical earth magnetism former-wound coil is solenoid coil.
In the technique scheme, the described vertical earth magnetism former-wound coil that can cover hull bottom is rectangle earth magnetism former-wound coil with two horizontal earth magnetism former-wound coils that can cover the hull port and starboard.
In the technique scheme, for Z
IxAsk for, adopt vertical earth magnetism former-wound coil shown in Figure 1, coil is switched on, make hub of a spool produce uniform longitudinal magnetic field, the numerical value that hub of a spool magnetic field longitudinal component changes is coil 2 times of geomagnetic field horizontal component numerical value when not switching on, like this, can directly utilize formula (1) to ask for the induced field vertical component Z of this ferromagnetic object
Ix
In the technique scheme, for Z
IyAsk for, adopt Fig. 2 and horizontal earth magnetism former-wound coil shown in Figure 3, coil is switched on, make hub of a spool produce uniform transverse magnetic field, the numerical value that hub of a spool magnetic field cross stream component changes is coil 2 times of geomagnetic field horizontal component numerical value when not switching on.Like this, can directly utilize formula (2) to ask for the induced field vertical component Z of this ferromagnetic object
Iy
In the above-mentioned technical method, for Z
IzAsk for, can adopt Fig. 4 and vertical earth magnetism former-wound coil shown in Figure 5, coil is switched on, make hub of a spool produce uniform vertical magnetic field, the numerical value that hub of a spool magnetic field vertical component changes is coil 2 times of geomagnetic field vertical component numerical value when not switching on.Like this, can directly utilize formula (3) to ask for the induced field vertical component Z of this ferromagnetic object
Iz
The present invention is by said method coiling earth magnetism former-wound coil around the boats and ships, and simulation produces different terrestrial magnetic field to coil electricity, the vertical component of utilizing the magnetic field that magnetization produces to boats and ships, magnetic field differently to decompose its induced field.
The content that this instructions is not described in detail belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. a folk prescription is characterized in that to the method for measuring boats and ships induced field vertical component it comprises the steps:
Step 1): before hull to be measured enters checkout area, measure the vertical component Z of terrestrial magnetic field by Magnetic Sensor
D1
Step 2): according to the design size of hull, coiling can cover bow to the vertical earth magnetism former-wound coil of the multiturn of stern, and the inner ring of described vertical earth magnetism former-wound coil can wrap the horizontal outline of hull; Coiling can cover two horizontal earth magnetism former-wound coils of hull port and starboard; Coiling can cover the vertical earth magnetism former-wound coil of hull bottom;
Step 3): only to vertical earth magnetism former-wound coil energising, make vertical earth magnetism former-wound coil center produce uniformly vertically simulation terrestrial magnetic field, the numerical value of hub of a spool changes of magnetic field is coil 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D2
Step 4): only two horizontal earth magnetism former-wound coils that can cover the hull port and starboard of above-mentioned coiling are switched on, make two horizontal earth magnetism former-wound coils produce uniformly laterally simulation terrestrial magnetic field, the numerical value that two horizontal earth magnetism former-wound coil central magnetic fields change is two horizontal earth magnetism former-wound coils 2 times of geomagnetic field horizontal component numerical value when not switching on, measure magnetic field vertical component that two horizontal earth magnetism former-wound coil centers contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D3
Step 5): only the vertical earth magnetism former-wound coil that can cover hull bottom of above-mentioned coiling is switched on, make vertical earth magnetism former-wound coil produce uniform vertical simulation terrestrial magnetic field, the numerical value that vertical earth magnetism former-wound coil central magnetic field changes is vertical earth magnetism former-wound coil 2 times of geomagnetic field vertical component numerical value when not switching on, measure magnetic field vertical component that vertical earth magnetism former-wound coil center contain terrestrial magnetic field by Magnetic Sensor this moment, is designated as Z
D4
Step 6): the power supply that disconnects above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two horizontal earth magnetism former-wound coils, bring hull into checkout area then, and hull sent in above-mentioned vertical earth magnetism former-wound coil, vertical earth magnetism former-wound coil and two the horizontal earth magnetism former-wound coil region surrounded, measure magnetic field and the geomagnetic field vertical component sum that hull produces by Magnetic Sensor, be designated as Z
1
Step 7): only to vertical earth magnetism former-wound coil energising and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, vertically earth magnetism former-wound coil magnetic field and terrestrial magnetic field vertical component sum by Magnetic Sensor then, be designated as Z
2
Step 8): the vertical component Z that draws longitudinal induction magnetic field according to following formula
Ix
So namely finished the measurement of the longitudinal induction magnetic field vertical component of hull to be measured;
Step 9): only to two horizontal earth magnetism former-wound coils energisings that can cover the hull port and starboard and produce 2 times of geomagnetic field horizontal components, measure the magnetic field of tested hull, two magnetic field and geomagnetic field vertical component sums that horizontal earth magnetism former-wound coil produces by Magnetic Sensor then, be designated as Z
3
Step 10) draws the vertical component Z in transvercal induction magnetic field according to following formula
Iy
So namely finished the measurement of the transvercal induction magnetic field vertical component of hull to be measured;
Step 11): only to the vertical earth magnetism former-wound coil energising that can cover hull bottom and produce 2 times of geomagnetic field vertical components, measure magnetic field and the geomagnetic field vertical component sum of the magnetic field of tested hull, the generation of vertical earth magnetism former-wound coil then by Magnetic Sensor, be designated as Z
4
Step 12): the vertical component Z that draws vertical induced field according to following formula
Iz
So namely having finished the vertical component of the vertical induced field of hull to be measured measures.
2. folk prescription according to claim 1 is to the method for measuring boats and ships induced field vertical component, and it is characterized in that: described vertical earth magnetism former-wound coil is solenoid coil.
3. folk prescription according to claim 1 is characterized in that to the method for measuring boats and ships induced field vertical component: the described vertical earth magnetism former-wound coil that can cover hull bottom is rectangle earth magnetism former-wound coil with two horizontal earth magnetism former-wound coils that can cover the hull port and starboard.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103698719A (en) * | 2013-12-18 | 2014-04-02 | 中国人民解放军91872部队上海研究室 | Method for increasing single-direction measuring accuracy of submarine induced magnetic field |
| CN104360293A (en) * | 2014-11-07 | 2015-02-18 | 中国人民解放军海军工程大学 | Ship-induced magnetic field real-time acquisition method |
| CN107092001A (en) * | 2017-05-19 | 2017-08-25 | 中国人民解放军海军工程大学 | Ship induced field measuring method based on magnetic field map between face subdivision and measuring point |
| CN107238809A (en) * | 2017-05-19 | 2017-10-10 | 中国人民解放军海军工程大学 | Ship induced field measuring method based on magnetic field map between body subdivision and measuring point |
| CN109164401A (en) * | 2018-11-13 | 2019-01-08 | 中国船舶重工集团公司第七0四研究所 | A method of measurement induced magnetic field Zix |
| CN112837890A (en) * | 2020-12-29 | 2021-05-25 | 中国船舶重工集团有限公司第七一0研究所 | Asymmetric ship magnetic field vertical component compensation method |
| CN113640712A (en) * | 2021-08-06 | 2021-11-12 | 中国人民解放军海军工程大学 | Prediction method for vertical component of vertical induced magnetic field of ship |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698719A (en) * | 2013-12-18 | 2014-04-02 | 中国人民解放军91872部队上海研究室 | Method for increasing single-direction measuring accuracy of submarine induced magnetic field |
| CN103698719B (en) * | 2013-12-18 | 2016-07-06 | 中国人民解放军91872部队上海研究室 | The method improving submarine induced field one direction certainty of measurement |
| CN104360293A (en) * | 2014-11-07 | 2015-02-18 | 中国人民解放军海军工程大学 | Ship-induced magnetic field real-time acquisition method |
| CN104360293B (en) * | 2014-11-07 | 2017-02-08 | 中国人民解放军海军工程大学 | Ship-induced magnetic field real-time acquisition method |
| CN107092001A (en) * | 2017-05-19 | 2017-08-25 | 中国人民解放军海军工程大学 | Ship induced field measuring method based on magnetic field map between face subdivision and measuring point |
| CN107238809A (en) * | 2017-05-19 | 2017-10-10 | 中国人民解放军海军工程大学 | Ship induced field measuring method based on magnetic field map between body subdivision and measuring point |
| CN107238809B (en) * | 2017-05-19 | 2019-07-26 | 中国人民解放军海军工程大学 | Ship induced magnetic field measurement method based on magnetic field map between body subdivision and measuring point |
| CN107092001B (en) * | 2017-05-19 | 2020-03-24 | 中国人民解放军海军工程大学 | Ship induced magnetic field measurement method based on surface subdivision and magnetic field mapping between measuring points |
| CN109164401A (en) * | 2018-11-13 | 2019-01-08 | 中国船舶重工集团公司第七0四研究所 | A method of measurement induced magnetic field Zix |
| CN112837890A (en) * | 2020-12-29 | 2021-05-25 | 中国船舶重工集团有限公司第七一0研究所 | Asymmetric ship magnetic field vertical component compensation method |
| CN113640712A (en) * | 2021-08-06 | 2021-11-12 | 中国人民解放军海军工程大学 | Prediction method for vertical component of vertical induced magnetic field of ship |
| CN113640712B (en) * | 2021-08-06 | 2023-11-24 | 中国人民解放军海军工程大学 | Prediction method for vertical component of vertical induction magnetic field of ship |
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