Thin film fluxgate sensor

A magnetic field sensor and magnetic flux technology, applied in the direction of measuring magnetic variables, magnetic field measurement using the principle of magnetic flux control, instruments, etc.

Active Publication Date: 2014-12-31
莱姆电子(中国)有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is difficult to achieve with conventional thin-film fluxgate sensors while maintaining uniform saturation of the soft magnetic material and linearity of signal measurement.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thin film fluxgate sensor
  • Thin film fluxgate sensor
  • Thin film fluxgate sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Referring to the drawings, the fluxgate magnetic field sensor 2 includes an excitation current carrying conductor 4, a saturable magnetic material enclosure 6, a magnetic field sensor 8 and a substrate 10 carrying the aforementioned elements.

[0037] The ends of the excitation current conductor 4 are connected to contact terminals 13a, 13b (in the embodiment shown in the form of contact pads connected to an excitation current supply (not shown) of the sensor).

[0038] The magnetic field sensor 8 takes the form of a sensing coil forming a helix around an enclosure of magnetic material, the ends of which sensing coil are connected to contact terminals 12a, 12b which are located at the The illustrated embodiment takes the form of contact pads connected to the sensor's sense coil processing circuitry (not shown).

[0039] However, the magnetic field sensor may have other configurations, eg the magnetic field sensor may comprise one or more pick-up coils, for example arran...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A fluxgate magnetic field sensor including an excitation current conductor (4) and a layer of saturable magnetic material cladding (6) having a plurality of feed-through channels (16) extending between opposed faces of the cladding layer, the excitation current conductor weaving through a plurality of said feed-through channels.

Description

technical field [0001] The present invention relates to a thin film flux gate sensor for measuring or detecting magnetic fields. Background technique [0002] Magnetic fields can be measured or detected in many different applications, for example for current measurement, for position sensing applications, or for measuring magnetic flux in electromagnetic drive applications. [0003] Thin-film flux-gate magnetic field sensors are used in applications that require a low-cost, tiny sensor for measuring weak magnetic fields. In EP 1785738 a thin film flux gate sensor for sensing the position of an object is described. The sensor comprises a thin magnetic core layer sandwiched between two printed circuit boards with conductive traces interconnected to form a winding around the magnetic core. Such sandwich constructions are relatively expensive to manufacture and do not provide optimal performance in view of the thickness of the dielectric circuit board used to separate the cond...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): G01R33/04G01R33/05
CPCG01R33/04G01R15/207G01R15/185
InventorW·泰帕
Owner莱姆电子(中国)有限公司