CN102346200A - Magnetic core shell of fluxgate sensor probe and manufacturing method thereof - Google Patents

Abstract

The invention discloses a magnetic core shell of a fluxgate sensor probe and a manufacturing method thereof. The magnetic core shell consists of an exciting-coil magnetic core shell and an induction-coil magnetic core shell, wherein the two magnetic core shells are respectively made of soft plastic sheets and can sheath magnetic cores; the magnetic core shells form a horizontal H shape after being symmetrically folded along the central line of an expansion drawing; and copper wires are wound on the two magnetic core shells. According to the magnetic core shell, the mode of manufacturing the magnetic core shells having the fluxgate sensor probes with unified magnetic-core external factors such as winding and edge distance and the like to sheath different magnetic cores is used for replacing the traditional method for manufacturing a plurality of independent fluxgate sensor probes; and unavoidable external parameter fluctuation among different fluxgate sensor probes is overcome.

Description

Magnetic core shell of a kind of magnetic flux door sensor probe and preparation method thereof

Technical field

The present invention relates to magnetic core shell of a kind of magnetic flux door sensor probe and preparation method thereof.

Background technology

Fluxgate sensor (being designated hereinafter simply as fluxgate) is used to measure low-intensity magnetic field, has the resolution height, measurement range is wide, reliability is high, simple in structure, economy and durability, can directly measure characteristics such as magnetic-field component.The critical component of fluxgate is a fluxgate magnetic core, partly is made up of magnetic core, drive coil, magnetic test coil etc.Nowadays the research of fluxgate obtains paying attention to gradually; Many scientific research personnel study fluxgate; Can run into many problems unavoidably under study for action; For example when research the influencing of core material; General all is identical drive coil and the magnetic test coil of coiling on the magnetic core of unlike material or different tissues state, same size; Influence parameter with outside the fixed magnetic core other; But different magnetic cores are attend the physical dimension of the coil of institute's coiling; The tightness of coiling etc. there are differences inevitably, thus the interference experiment result.In addition,, need to be equipped with the probe of a plurality of different magnetic cores, have above-mentioned problem equally for adapting to different application scenarios.

Summary of the invention

The object of the present invention is to provide magnetic core shell of a kind of magnetic flux door sensor probe and preparation method thereof.

Basic ideas of the present invention are: have the mode that the unified fluxgate magnetic core shells of magnetic core external factor such as coiling, back gauge come the different magnetic cores of suit with making; Replace making the classic method of a plurality of independent probes, overcome the inevitable external parameter fluctuation that exists between the different probes.

The magnetic core shell of a kind of magnetic flux door sensor probe provided by the present invention; Form by drive coil magnetic core shell and two magnetic core shells of inductive coil magnetic core shell; Two magnetic core shells are processed by the nonrigid plastic thin slice; Can entangle magnetic core; The magnetic core shell shape is the I shape that behind the center line symmetrical fold of stretch-out view, is traverse, is wound with copper cash on two magnetic core shells.

Said magnetic core shell is used for the movable magnetic core of suit unlike material.

Copper cash 100～200 circles that said magnetic core shell coiling diameter is 0.15～0.25mm.

Described magnetic core shell adapts to the magnetic core of unlike material, different length, and magnetic core ties in shell, can fixed magnetic core, be difficult for being offset.

Described magnetic core shell can be made a plurality of different shells, to satisfy the requirement of different external parameters.

Described magnetic core shell is used for the movable magnetic core of suit unlike material.Can the cover holding position of shell be adjusted according to the different back gauge requirement of when research, have very big dirigibility.

Described magnetic core shell is processed by the nonrigid plastic thin slice, and it is shaped as the I shape of traverse.In the coiling process, coiling receives the restriction on right sides edge, can guarantee that coil edge is neat, can act on magnetic core fully to guarantee inductive coil and drive coil, and even action, and monnolithic case is fixed simultaneously, and is not easy to wear, reduces the influence of external parameter fluctuation.

I shape ghost at described magnetic core shell is around with copper cash 100～200 circles that diameter is 0.15～0.25mm.Select the less copper cash coiling of diameter for use, help making the magnetic core shell coiling of producing neat, and can coiling more coil number under the same size shell, thereby satisfy the requirement of different drive coils and number of inductive coil turns.

The present invention also provides a kind of method for making of said magnetic core shell, has following steps:

(1) according to the physical dimension of magnetic core, design the stretch-out view of probe magnetic core shell, and on the nonrigid plastic thin slice, draw, accurately cut down again;

(2) along the center line symmetrical fold of stretch-out view, interior folder magnetic core;

(3) behind the alignment edge, in the middle of the I shape plastics neatly, equably successively around on copper cash, between adjacent two layers, the copper cash coiling of staggering;

(4) after coiling finishes, the fixedly copper cash that applies glue, treat glue curing after, extract magnetic core out, form the multi-function magnetic core housing.

Beneficial effect of the present invention is: make a fluxgate multi-function magnetic core housing; Magnetic core through interior cover unlike material; Can study different heat treatment mode, different-thickness; The different edge distance; Different length has been eliminated the influence of coiling difference to the influence of probe characteristic, has reduced the workload of making fluxgate magnetic core; Used control variate method neatly, for studying and even using and all brought very large convenience.

Description of drawings

Fig. 1 is the stretch-out view of magnetic core shell of the present invention;

Fig. 2 is the stereographic map of magnetic core shell of the present invention after the center line doubling;

The assembling synoptic diagram of Fig. 3 magnetic core shell of the present invention and magnetic core.

Among above-mentioned Fig. 3: the 1st, inductive coil, the 2nd, drive coil, the 3rd, inductive coil shell, the 4th, magnetic core, the 5th, drive coil shell.

Embodiment

First rectangle of on the nonrigid plastic plate, drawing; Specification is 11mm*20mm; Be respectively second, third rectangular long limit with these rectangular two minor faces again; Symmetry this two small rectangles that draw in first rectangle; Specification is 7mm*3mm; Simultaneously draw the 4th rectangle in first rectangular midline; Specification is 6mm*7mm; Be located at first rectangular middle; Cut the shape of having drawn then; With the center line is the axis of symmetry doubling, forms I shape, obtains the I shape model.The magnetic core of making is put in the middle of the I shape model, and like this, model is being wrapped up in the magnetic core outside; Two outshot is a confinement block; The model center section begin neatly equably successively around on copper cash, the coiling of staggering between the adjacent two layers copper cash is whenever around one deck copper cash; Note checking frequently whether the magnetic core degree of tightness is suitable; Guarantee the copper cash coiling closely, evenly, when reaching the coil number that needs, applying glue fixes copper cash; Extract magnetic core out, accomplished the making of the magnetic core shell of a magnetic flux door sensor probe.

Claims (5)

1. the magnetic core shell of a magnetic flux door sensor probe; It is characterized in that: form by drive coil magnetic core shell and two magnetic core shells of inductive coil magnetic core shell; Two magnetic core shells are processed by the nonrigid plastic thin slice; Can entangle magnetic core; The magnetic core shell shape is the I shape that behind the center line symmetrical fold of stretch-out view, is traverse, is wound with copper cash on two magnetic core shells.

2. magnetic core shell according to claim 1 is characterized in that: said magnetic core shell is used for the movable magnetic core of suit unlike material.

3. magnetic core shell according to claim 1 is characterized in that: copper cash 100～200 circles that said magnetic core shell coiling diameter is 0.15～0.25mm.

4. magnetic core shell according to claim 1 is characterized in that: described magnetic core shell adapts to the magnetic core of unlike material, different length, and magnetic core ties in shell, can fixed magnetic core, be difficult for being offset.

5. the method for making of the said magnetic core shell of claim 1 is characterized in that having following steps:

(1) according to the physical dimension of magnetic core, design the stretch-out view of probe magnetic core shell, and on the nonrigid plastic thin slice, draw, accurately cut down again;

(2) along the center line symmetrical fold of stretch-out view, interior folder magnetic core;

(3) behind the alignment edge, in the middle of the I shape plastics neatly, equably successively around on copper cash, between adjacent two layers, the copper cash coiling of staggering;

(4) after coiling finishes, the fixedly copper cash that applies glue, treat glue curing after, extract magnetic core out, form the multi-function magnetic core housing.

Images