WO2003071299A1 - Aimant muni d'un element bobine/impedance/capteur electromagnetique - Google Patents
Aimant muni d'un element bobine/impedance/capteur electromagnetique Download PDFInfo
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- WO2003071299A1 WO2003071299A1 PCT/JP2003/001749 JP0301749W WO03071299A1 WO 2003071299 A1 WO2003071299 A1 WO 2003071299A1 JP 0301749 W JP0301749 W JP 0301749W WO 03071299 A1 WO03071299 A1 WO 03071299A1
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- electromagnetic coil
- coil
- magnetic
- sensor element
- impedance sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Definitions
- the present invention relates to a magneto-impedance using an electromagnetic coil used as a magnetic sensor.
- FIG. 13 shows the structure of a conventional MI device (Japanese Patent Application Laid-Open No. 2000-81471, Japanese Patent Application Laid-Open No. 2000-296127).
- a magnetic sensing element made of an amorphous wire is fixed on an electrode substrate at the center, and an electromagnetic coil is wound around the electrode substrate.
- the diameter of the electromagnetic coil was about 1 to 5 mm.
- the size of the Ml element is generally 3 mm in width, 2 mm in height, and 4 mm in length.
- the above conventional Ml element can achieve high sensitivity, miniaturization, and low power consumption to some extent when applied as a magnetic sensor, but there is a problem that miniaturization of a high-performance magnetic sensor is not necessarily sufficient.
- Ml sensors high-performance magnetic sensors
- the conventional Ml element had a large size because the electromagnetic coil was wound around the electrode substrate from the outside. Therefore, further miniaturization of the MI element has been required.
- DISCLOSURE OF THE INVENTION Accordingly, the present inventor has conducted intensive studies on miniaturization of MI elements, and as a result, An electromagnetic coil composed of one coil spirally formed in the extending groove in the electrode wiring substrate having the extending groove formed therein and the other coil connecting the upper ends of the one coil.
- a voltage corresponding to the strength of an external magnetic field generated in the electromagnetic coil when a high frequency or pulse current is applied to a magnetic sensing element inserted in an insulator placed in the extending groove of the electrode wiring board The inventor of the present invention focused on the technical idea of the present invention to output the image, and as a result of further research and development based on the technical idea of the present invention focused on, arrived at the present invention.
- An object of the present invention is to achieve a reduction in size and thickness, a reduction in volume, a reduction in power consumption, an increase in sensitivity, and an increase in width.
- the magneto-impedance-sensor element with the electromagnetic coil according to the present invention (the first invention according to claim 1) is:
- An electromagnetic coil including one coil spirally formed in the extending groove in the electrode wiring board and the other coil connecting each upper end of the one coil;
- a high-frequency or pulse-current-sensitive magnetic body inserted into the insulator.
- the magnet with an electromagnetic coil and the impedance sensor element of the present invention (the second invention according to claim 2)
- the magnetic sensitive body is made of an amorphous conductive magnetic wire.
- the electromagnetic coil has a winding inner diameter of 200 / zm or less.
- the magnet with an electromagnetic coil and the impedance sensor element of the present invention (the fourth invention according to claim 4)
- the electromagnetic coil has a winding interval per turn of 100 ⁇ m / turn or less.
- the magneto-impedance sensor element with the electromagnetic coil of the present invention (the fifth invention according to claim 5)
- the magnetic sensing element is set to a length of 3 mm or less
- the magnet impedance sensor element with the electromagnetic coil of the present invention (the sixth invention according to claim 6) is
- the magnetic sensing element has an aspect ratio of a length ratio to a wire diameter of 10 to 100.
- the magneto-impedance sensor element with the electromagnetic coil of the present invention (the seventh invention according to claim 7) is
- the inner diameter of the winding of the electromagnetic coil is set to 1.005 or 10 times the wire diameter of the magnetic sensitive body.
- the magneto-impedance sensor element with an electromagnetic coil according to the present invention (the eighth invention according to claim 8)
- the electromagnetic coil has a winding inner diameter of 100 m or less. 9 things.
- the magneto-impedance sensor element with an electromagnetic coil according to the present invention (a ninth invention according to claim 9) is
- the electromagnetic coil has a winding interval of 50 ⁇ m Z turns or less per turn.
- the magneto-impedance sensor element with an electromagnetic coil according to the first invention having the above-described configuration is characterized in that the magnetic sensing element inserted in the insulator placed in the extending groove of the electrode wiring board is supplied with a high frequency or When a pulse current is applied, the electrode wiring comprises one coil spirally formed in the extending groove formed in the substrate and the other coil connecting each upper end of the one coil. Since a voltage corresponding to the intensity of the external magnetic field generated in the electromagnetic coil is output, it is possible to reduce the size and thickness and to reduce the power consumption.
- the high sensitivity can be realized because the magnetic sensitive body is made of an amorphous conductive magnetic wire in the first invention. It works.
- the electromagnetic coil according to the second aspect of the invention has a winding inner diameter of 200 ⁇ am or less. It has the effect of doing.
- the electromagnetic coil according to the third invention has a winding interval per turn of 100 ⁇ winding or less. An effect of realizing high sensitivity is achieved in order to realize the electromagnetic coil having a high density.
- the magnetic sensing element is set to a length of 3 mm or less in the second aspect, so that downsizing is realized. This has the effect.
- a magneto-impedance sensor element with an electromagnetic coil having the above-mentioned structure, wherein in the second aspect, the magneto-sensitive body has a length ratio to a wire diameter. Since the aspect ratio is set to 10 to 150, the measurement magnetic field range that can be measured while maintaining linearity is widened, for example, a wide range that can be applied in the automotive field This has the effect of realizing the system.
- An electromagnetic coil f-dimension magnetic impedance sensor element having the above-mentioned structure, wherein the inner diameter of the winding of the electromagnetic coil is 1.0 with respect to the diameter of the magnetic sensitive body in the sixth aspect. Since it is set to 0.5 to 10 times, it has the effect of realizing high sensitivity.
- the magneto-impedance sensor element with an electromagnetic coil according to an eighth aspect of the present invention is characterized in that, in the second aspect, the electromagnetic coil has a winding inner diameter of 100; m or less. It works.
- FIG. 1 is a front view showing an MI device according to a first embodiment and a first example of the present invention.
- FIG. 2 is a cross-sectional view of the MI device of the first embodiment and the first example, taken along line AA ′ of FIG.
- FIG. 3 is a partial perspective view showing an arrangement of coils in a groove in the first embodiment and the first example.
- FIG. 4 is a partial plan view showing an arrangement of coils in a groove in the first embodiment and the first example.
- FIG. 5 is a partial plan view showing the arrangement of the coils in the grooves in the first embodiment and the first example.
- FIG. 6 is a block circuit diagram showing an electronic circuit of the MI sensor according to the first embodiment and the first example.
- FIG. 5 is a diagram showing characteristics of a sensor output voltage versus an external magnetic field in a ⁇ I sensor using a ⁇ I element in the first embodiment and the first example.
- FIG. 8 is a diagram showing a relationship between an external magnetic field and an output voltage in the sensor of the first embodiment and a conventional bobbin type sensor.
- FIG. 9 is a diagram showing a relationship between an external magnetic field and an output voltage in order to compare ranges of amorphous wires of various lengths as a magnetic sensitive body in the III element of the second embodiment of the present invention.
- FIG. 10 is a diagram showing the relationship between the saturation magnetic field (G) and the total wire length, that is, the aspect ratio, of amorphous wires of various lengths as magnetic sensing elements in the II element of the second embodiment. is there.
- FIG. 11 is a partial plan view showing an arrangement of coils in a groove in other embodiments and examples of the present invention.
- FIG. 12 is a partial cross-sectional view showing an example of a groove shape in another embodiment and an example of the present invention.
- FIG. 13 is a front view showing the III elements of the comparative example and the conventional example. BEST MODE FOR CARRYING OUT THE INVENTION
- First Embodiment First Embodiment
- the magneto 'impedance' sensor element with an electromagnetic coil is, as shown in FIG. 1 and FIG. 2, a magnetic sensor 2 for detecting a magnetic field on an electrode wiring board 1 and a magnetic sensor 2 in the I element.
- the electromagnetic coil 3 having an inner diameter of 200 / zm or less is placed around the magnetic sensing element only with an insulator around the magnetic sensing element without a substrate that fixes the magnetic sensing element 2 'between the magnetic element 2 and the electromagnetic coil 3.
- the terminals of the magnetic sensitive body 2 and the coil 3 are connected to the respective electrodes 51, 52 on the substrate 1, and a high frequency or pulse current is applied to the magnetic sensitive body 2, and the external magnetic field generated in the electromagnetic coil 3 at that time is It is intended to output a voltage corresponding to the intensity.
- the inner diameter of the electromagnetic coil 3 can be reduced to 200 / m or less because the electromagnetic coil 3 is installed around the magnetic sensing element 2 via only an insulator, and the MI element can be downsized as a whole. Can be achieved.
- the magnetosensitive body 2 is a conductive magnetic wire having a diameter of 1 to 150 m
- the electrode wiring board 1 has a depth of 5 to 200 ⁇ m
- the electromagnetic coil 3 has one side 31 1 of the electromagnetic coil disposed along the groove surface 1 1 1, and the other side 3 2 of the electromagnetic coil disposed on the lower surface of the upper substrate 12. Are arranged on the upper surface of the groove, and have a two-layer structure of one side 31 of the coil on the groove surface and the other side 32 of the coil on the upper surface of the groove.
- the magnetic sensing element 2 can have a coil diameter of 200 ⁇ m or less by using a conductive magnetic wire having a diameter of 1 to 150 ⁇ m.
- the magnetic wire when a magnetic wire is used for the magnetic sensing element 2, the magnetic wire has an excellent magnetic sensing performance, so the output voltage per one turn of the electromagnetic coil increases, and the number of windings can be reduced. Can be shortened.
- the size can be further reduced as compared with the case where the electromagnetic coil 3 is arranged on the electrode wiring board 1. External contact can also be prevented, and a mechanically stable MI element can be realized.
- the conductive magnetic wire is made of amorphous.
- the material of the magnetic wire is specified as amorphus, since the amorphus has an excellent magnetic sensing performance, the output voltage per one turn of the electromagnetic coil increases, and the number of windings can be reduced. Can be shorter.
- a winding interval per unit length of the electromagnetic coil 3 is set to 100 m / turn or less.
- the output voltage is increased by reducing the winding interval per turn (per unit length) of the electromagnetic coil 3 and increasing the number of windings per turn (per unit length). Practically, it is preferable to be less than 100 // m / volume. If the same output voltage is sufficient, the length of the MI element can be reduced. Further, in the present embodiment, in the MI element, the size of the electrode wiring board 1 is from 20 m to 1 mm or less, from 2 m to 1 mm or less, and from 200 ⁇ m to 4 m in length. This is an MI element characterized by being equal to or less than mm.
- the electrode wiring board 1 can be made the above size, and the whole element can be made significantly smaller, thinner and smaller. Can be realized.
- the magnet 'impedance' sensor element with the electromagnetic coil of the second embodiment will be described below.
- high-sensitivity magnetic sensors have extremely high sensitivity because the change in detection output is large relative to the change in detection input, but have a narrow detection range because they reach the full scale up to the saturation magnetic field immediately.
- an aspect ratio which is a ratio of a length to a diameter of the magneto-sensitive element.
- the conventional high-sensitivity magnetic sensors (MI, FG sensors) with the structure shown in Fig. 13 have a limit in miniaturization, and it is difficult to miniaturize them to achieve a wide range. If the length is shortened, the sensitivity is extremely reduced.
- the aspect ratio which is the ratio of the length to the diameter of the amorphous wire in the second embodiment, is extremely reduced to achieve a wide range, and a very high density around the amorphous wire.
- Inductance is improved by winding a small coil, the coil shape is small, and the inductance L is extremely small, so the vibration induced in the coil is high.However, by using an analog switch, the magnetic field signal is not lost without losing the sensitivity. It is to be detected.
- the length of the amorphous wire is set to 100 0111 to 100 00 m for the amorphous wire diameter of 110 z m to 100 m.
- the detection range becomes 1.5 to 20 times the conventional value, and when it is set to 10 to 100, the detection range becomes 3 to 2 times the conventional value. It becomes 0 times.
- the detection range becomes 5 to 20 times the conventional range.
- the diameter of the electromagnetic coil is set to 10.05 m to 10000 m with respect to the diameter of the amorphous wire 3 ⁇ 46 1 0 ⁇ 111 to 1100 // m, and 1 It is better to set the value to 0.05 to 10 times.
- a magneto-impedance sensor element with an electromagnetic coil according to the first embodiment will be described below with reference to FIGS.
- the size of the substrate 1 is 0.5 mm in width, 0.5 mm in height, and 1.5 mm in length.
- the magnetic sensitive body is an amorphous wire 2 having a diameter of 30 // m or 20 ⁇ a m using a CoFeSiB alloy.
- the groove 11 on the substrate has a depth of 50 ⁇ m, a width of ⁇ 0 / m, and a length of 1.5 mm.
- the electromagnetic coil 3 is formed by a two-layer structure of one side 3 1 of the coil formed on the groove surface 1 1 1 and the coil 3 2 on the other side formed on the groove upper surface 1 1 2 (the upper surface 4 1 of the resin 4). It was done. )
- one side 31 of the coil formed on the groove surface 1 11 is formed on the entire surface of the groove surface 1 1 1 of the groove 11 formed in the longitudinal direction of the electrode wiring board 1 as shown in FIGS.
- a conductive magnetic metal thin film forming a coil is formed in the vicinity of the groove 11 on the upper surface of the electrode wiring board 1 by vapor deposition, and a conductive portion forming a gap so that the formed metal thin film remains spirally. It is formed by removing the conductive metal thin film by a selective etching technique.
- the coil portion 311 is formed to extend vertically in the vertical direction, and on the groove bottom surface 110 of the groove 11, the adjacent vertical coil is formed.
- the coil portion 312 is formed to extend obliquely to the width direction so as to be continuous with the portion.
- the coil 32 on the other side formed on the groove upper surface 1 1 2 (the upper surface 4 1 of the resin 4) is disposed in the longitudinal direction of the electrode wiring board 1 on the groove upper surface 1 1 2 (the upper surface 4 1 of the resin 4).
- a conductive magnetic metal thin film forming a coil is formed by vapor deposition over a wider range in a width direction of a portion opposed to the formed groove 11, and the formed conductive magnetic metal thin film is formed at a constant pitch.
- a magnetic metal thin film portion is formed by a selective etching technique so as to form a gap with a constant pitch so as to remain in a strip shape longer in the width direction than the length of the groove 11 in the width direction.
- a protective film may be formed on the upper surface of the coil as needed.
- the winding inside diameter of the electromagnetic coil 3 is a circle-equivalent inside diameter (diameter of a circle having the same area as a groove cross-sectional area formed by height and width) of 66 m.
- the winding interval per turn (per unit length) of the electromagnetic coil 3 is 50 / z m Z winding.
- An insulating resin 4 is disposed between the amorphous wire 2 and the electromagnetic coil 3 to maintain the insulation between the conductive magnetic amorphous wire and the electromagnetic coil.
- Electrodes 5 have a total of four electromagnetic coil terminals 51 and magnetic sensitive terminals 52 baked on the upper surface of the substrate. Both ends of the amorphous wire 2 and both ends of the electromagnetic coil 3 are connected to the electrode 5.
- the MI element 10 of the present invention has the configuration as described above. Incidentally, the size of the present Ml element is the same as the size of the electrode wiring board. Next, the characteristics of the MI element 10 were evaluated using the MI sensor shown in FIG.
- the electronic circuit of the MI sensor used for the evaluation includes a signal generator 6, the MI element 10, and a signal processing device 7.
- the signal is a pulse signal having a strength of 170 mA corresponding to 200 MHz, and the signal interval is 1 ⁇ sec.
- the pulse signal is input to the amorphous wire 2, and a voltage proportional to the external magnetic field is generated in the electromagnetic coil 3 during the input time.
- the signal processing circuit 7 extracts the voltage generated in the electromagnetic coil 3 through a synchronous detection 71 that opens and closes in synchronization with the input of the pulse signal, and amplifies the voltage to a predetermined voltage by an amplifier 72.
- FIG. 7 shows the sensor output from the circuit.
- the horizontal axis in FIG. 7 is the magnitude of the external magnetic field, and the vertical axis is the sensor output voltage.
- the sensor output shows excellent linearity between ⁇ 10G. Further, its sensitivity was 20 mV / G . This is a level that can be used as a highly sensitive magnetic sensor.
- the dimensions of the conventional MI element 9 shown in FIG. 13 as a comparative example are as follows.
- the size of the substrate 91 for fixing the amorphous wire is 0.7 mm in width, 0.5 mm in height, and 3.5 mm in length.
- the magnetic susceptor is an amorphous wire 92 having a diameter of 3 ⁇ using a CoFeSiB alloy. Between the amorphous wire 92 and the electromagnetic coil 93, a conductive magnetic amorphous wire and the electromagnetic coil are kept insulated by a winding frame 94 having an insulating property.
- the core formed by the resin mold of the winding frame 94 has a width of 1 mm, a height of 1 mm, and a length of 3 mm.
- the inner diameter of the electromagnetic coil 93 is 1.5 mm.
- the electrode 95 has a winding frame 94 on which a total of four terminals of an electromagnetic coil terminal and a terminal of a magnetic sensitive body are arranged. Both ends of the amorphous wire 92 and both ends of the electromagnetic coil 93 are connected to the electrode 95.
- the conventional MI element 9 has the configuration as described above. In this case, the dimensions of the MI element 9 are 3 mm in width, 2 mm in height, and 4 mm in length. Conventional MI elements are large and cannot be applied to sensors with limited installation space as described above. On the other hand, since the first embodiment is very small and thin, it can be applied to ultra-small magnetic sensors for small electronic devices such as sensors for mobile phones and sensors for watches.
- a conductive magnetic metal thin film forming a coil is formed on the groove surface 11 1 of the groove 11 formed in the longitudinal direction of the electrode wiring substrate 1 and the lower surface 1 12 of the upper substrate 12. Is formed by vapor deposition, and the electromagnetic coil is formed by removing the conductive metal thin film portion forming the gap by a selective etching method so that the formed metal thin film remains in a spiral shape. This has the effect of enabling the manufacture of small and thin MI elements with high density.
- a conventional bobbin-type sensor (wire length 2.5 mm, coil length 2 mm, 40 turns) as a comparative example shown in Fig. 13 and the first embodiment described above were used.
- Sensor (wire diameter ⁇ 20 // m and length 1.5 mm, coil length 1 mm, Fig. 8 shows the results of comparison of the range at (18 turns).
- the horizontal axis in FIG. 8 is the external magnetic field, and the vertical axis is the output voltage.
- the ranges of the conventional bobbin type sensor and the sensor of the above-described first embodiment are almost the same at 3 G, which is the same as that of the conventional bobbin type sensor.
- the output voltage of the example sensor is slightly over 80%, and the output voltage is low despite the small size and thinness.However, there is a large difference in the number of turns, so the voltage per turn is less than 28%.
- the sensor of the first embodiment is 53 mV / turn, which is about twice as large as the bobbin tamper, which is suitable for miniaturization.
- the magnet with magnetic coil, impedance, and sensor element of the second embodiment realizes a wide range that can be applied, for example, in the automotive field, and will be described below with reference to FIGS. 1 to 5.
- the size of the substrate 1 is 0.67 mm in length
- the magnetic sensitive body 2 is an amorphous wire 2 having a diameter of 3 using a CoFeSiB alloy.
- the electromagnetic coil 3 is formed by a two-layer structure of one side 3 1 of the coil formed on the groove surface 1 1 1 and the coil 3 2 on the other side formed on the groove upper surface 1 1 2 (the upper surface 4 1 of the resin 4). It was done.
- the overall length of the device is 0.67 mm.
- the diameter of the amorphous wire as the magnetic sensing element 2 is set to ⁇ 30 ⁇ m, and the inner diameter of the winding of the electromagnetic coil 3 is set to 880 m.
- the longitudinal width of the groove 11 of the coil section 3 11 and the coil section 3 12 shown in FIGS. 3 and 5 and Table 1 is set to 50 m, 10 ⁇ , 25 zm, etc.
- the width of the gap is also set to 25 m, 5 / m, 25 ⁇ m, etc.Table 1
- the ratio of the diameter of the amorphous wire to the inner diameter of the winding of the electromagnetic coil 3 is set in the range of 1.005 to 10;
- the inner diameter of the winding of the electromagnetic coil 3 is set within the range of 1.05 ⁇ m to 100 m, and the diameter of the amorphous wire is In the case of 100 im, the inner diameter of the winding of the electromagnetic coil 3 is 10.5! It is set within the range of ⁇ 100.
- the winding inner diameter of the electromagnetic coil 3 is 11 m to 70 ⁇ m (1.1 to 7 times), and the diameter of the amorphous wire is ⁇ 1 ⁇ m.
- the inner diameter of the winding of the electromagnetic coil 3 is 200 im to 300; mm (2 to 3 times).
- the detection range will be 3 to 20 times the conventional range, and a wide range is required. It can be applied in the automotive field.
- Fig. 9 shows the results of comparison of each range when driving with a higher driving voltage than the example.
- the horizontal axis in FIG. 9 is the external magnetic field, and the vertical axis is the output voltage.
- the 0.6 mm range with the shortest amorphous wire length has the widest range at ⁇ 45 G, and the range becomes narrower with the longer amorphous wire length. It is about 9 times as large as the 1.5 mm one.
- the prepared amorphous wire as the magnetic sensing element 2 has a length of 0.6 mm, 0
- the measurement results for the saturation magnetic field (G) that determines the measurable range are plotted on the horizontal axis.
- the overall length of the wire, that is, the aspect ratio, is plotted on the vertical axis.
- the diameter of the amorphous wire is 20 ⁇ m and the length of the amorphous wire closest to 0.67 mm, which is the target element total length when the winding inner diameter of the electromagnetic coil 3 is 80 ⁇ , is 0.7 mm, , ⁇ 40 G wide range.
- the magnet 'impedance' sensor element with the electromagnetic coil of the second embodiment can expand the detection range without deteriorating the sensor sensitivity, and as described above, the element shape is small, so the spatial resolution is improved and Since the total length (L) of the element is small, there is an advantage that the frequency response is improved.
- the coil portion 312 extends at the groove bottom surface 110 of the groove 11 inclining with respect to the width direction so as to be continuous with the adjacent vertical coil portion. And a coil 32 on one side in the width direction of the electrode wiring substrate 1 orthogonal to the groove 11 formed in the longitudinal direction of the electrode wiring substrate 1 on the lower surface 1 12 of the upper substrate 1 2
- the present invention is not limited to these.
- the coil portion 3 As shown in FIG. 11 (A), the coil portion 3
- the coil portion 3 12 is formed in the width direction orthogonal to the groove 11 formed in the longitudinal direction of the electrode wiring board 1 as shown in FIG.
- the groove structure in which the rectangular groove 11 is formed in the electrode wiring board 1 as shown in FIG. 2 has been described, but the present invention is not limited thereto.
- Figure 12 (A) or (C) When the groove 11 is formed by removing the electrode wiring substrate 1 by etching as described above, a U-shape when etched from obliquely above, an inverted trapezoid or V-shape when etched from above, a trapezoid or inverted V An embodiment in which a U-shaped groove is formed can be adopted.
- a spiral-shaped electromagnetic coil is formed by removing the magnetic metal thin film portion in a spiral shape by a selective etching method, and is cut into a predetermined length later to introduce an amorphous wire.
- Rukoto can be.
- INDUSTRIAL APPLICABILITY As described above, since the magneto-impedance sensor element with the electromagnetic coil of the present invention is very small and has high sensitivity, it can be used for small electronic devices such as sensors for mobile phones and sensors for watches. It can be applied to ultra-small magnetic sensors, and can be applied in the automotive field to realize a small size and wide range.
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Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR10-2003-7013089A KR100522665B1 (ko) | 2002-02-19 | 2003-02-19 | 전자 코일 부착 자기 임피던스 센서 소자 |
AU2003211249A AU2003211249A1 (en) | 2002-02-19 | 2003-02-19 | Magnet with electromagnetic coil/impedance/sensor element |
JP2003570149A JP3693119B2 (ja) | 2002-02-19 | 2003-02-19 | 電磁コイル付マグネト・インピーダンス・センサ素子 |
US10/501,329 US7224161B2 (en) | 2002-02-19 | 2003-02-19 | Magnet with electromagnetic coil/impedance/sensor element |
EP03706962.2A EP1486792B1 (en) | 2002-02-19 | 2003-02-19 | Magnet with electromagnetic coil/impedance/sensor element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002042325 | 2002-02-19 | ||
JP2002-42325 | 2002-02-19 |
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WO2003071299A1 true WO2003071299A1 (fr) | 2003-08-28 |
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PCT/JP2003/001749 WO2003071299A1 (fr) | 2002-02-19 | 2003-02-19 | Aimant muni d'un element bobine/impedance/capteur electromagnetique |
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US (1) | US7224161B2 (ja) |
EP (1) | EP1486792B1 (ja) |
JP (1) | JP3693119B2 (ja) |
KR (1) | KR100522665B1 (ja) |
CN (1) | CN1276265C (ja) |
AU (1) | AU2003211249A1 (ja) |
TW (1) | TWI259284B (ja) |
WO (1) | WO2003071299A1 (ja) |
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WO2009119081A1 (ja) | 2008-03-28 | 2009-10-01 | 愛知製鋼株式会社 | 感磁ワイヤ、マグネトインピーダンス素子およびマグネトインピーダンスセンサ |
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WO2012043160A1 (ja) | 2010-10-01 | 2012-04-05 | 愛知製鋼株式会社 | マグネトインピーダンスセンサ素子及びその製造方法 |
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US9759785B2 (en) | 2011-03-07 | 2017-09-12 | National University Corporation Nagoya University | Magnetic-field detecting device |
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CN104849679A (zh) * | 2014-02-18 | 2015-08-19 | 北京中电嘉泰科技有限公司 | 磁探头和包括该磁探头的磁场传感器 |
JP2016057190A (ja) * | 2014-09-10 | 2016-04-21 | 愛知製鋼株式会社 | 磁界測定装置 |
JP5839527B1 (ja) * | 2015-02-16 | 2016-01-06 | マグネデザイン株式会社 | 超高感度マイクロ磁気センサ |
TWI545332B (zh) * | 2015-09-10 | 2016-08-11 | 旺玖科技股份有限公司 | 電磁阻抗感測元件及其製作方法 |
TWI578547B (zh) * | 2015-09-10 | 2017-04-11 | 旺玖科技股份有限公司 | 電磁阻抗感測元件及其製作方法 |
JP6506466B1 (ja) * | 2018-06-05 | 2019-04-24 | マグネデザイン株式会社 | 超高感度マイクロ磁気センサ |
KR102649010B1 (ko) | 2020-03-05 | 2024-03-20 | 한국전자통신연구원 | Rf 미소 자계 검출 센서 및 그 제조 방법 |
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- 2003-02-19 CN CNB038007169A patent/CN1276265C/zh not_active Expired - Lifetime
- 2003-02-19 JP JP2003570149A patent/JP3693119B2/ja not_active Expired - Fee Related
- 2003-02-19 TW TW092103432A patent/TWI259284B/zh not_active IP Right Cessation
- 2003-02-19 EP EP03706962.2A patent/EP1486792B1/en not_active Expired - Lifetime
- 2003-02-19 WO PCT/JP2003/001749 patent/WO2003071299A1/ja active Application Filing
- 2003-02-19 KR KR10-2003-7013089A patent/KR100522665B1/ko active IP Right Grant
- 2003-02-19 US US10/501,329 patent/US7224161B2/en not_active Expired - Lifetime
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JP2001133530A (ja) * | 1999-11-05 | 2001-05-18 | Aichi Steel Works Ltd | 磁気インピーダンスセンサ |
JP2001318131A (ja) * | 2000-05-10 | 2001-11-16 | Minebea Co Ltd | 磁気インピーダンスヘッドモジュール |
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US7604591B2 (en) | 2003-10-27 | 2009-10-20 | Olympus Corporation | Capsule medical apparatus |
US7145321B2 (en) | 2005-02-25 | 2006-12-05 | Sandquist David A | Current sensor with magnetic toroid |
WO2009119081A1 (ja) | 2008-03-28 | 2009-10-01 | 愛知製鋼株式会社 | 感磁ワイヤ、マグネトインピーダンス素子およびマグネトインピーダンスセンサ |
US8461834B2 (en) | 2009-02-27 | 2013-06-11 | Aichi Steel Corporation | Magneto-impedance sensor element and method for manufacturing the same |
WO2010097932A1 (ja) | 2009-02-27 | 2010-09-02 | 愛知製鋼株式会社 | マグネトインピーダンスセンサ素子及びその製造方法 |
US8587300B2 (en) | 2010-10-01 | 2013-11-19 | Aichi Steel Corporation | Magneto-impedance sensor element and method for producing the same |
WO2012043160A1 (ja) | 2010-10-01 | 2012-04-05 | 愛知製鋼株式会社 | マグネトインピーダンスセンサ素子及びその製造方法 |
US9759785B2 (en) | 2011-03-07 | 2017-09-12 | National University Corporation Nagoya University | Magnetic-field detecting device |
JP5958548B2 (ja) * | 2012-10-04 | 2016-08-02 | 愛知製鋼株式会社 | マグネトインピーダンス素子およびその製造方法 |
JP2015124999A (ja) * | 2013-12-25 | 2015-07-06 | 愛知製鋼株式会社 | 磁気検出装置および磁性体有無検査装置 |
US10509081B2 (en) | 2015-04-21 | 2019-12-17 | Aichi Steel Corporation | Magneto-sensitive wire for magnetic impedance sensor capable of high-accuracy measurement and method of manufacturing same |
JP5839530B1 (ja) * | 2015-05-07 | 2016-01-06 | マグネデザイン株式会社 | 磁性ワイヤ整列装置および磁性ワイヤ整列方法 |
JP6302613B1 (ja) * | 2017-03-01 | 2018-03-28 | ナノコイル株式会社 | ナノコイル型gsrセンサ素子の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN1276265C (zh) | 2006-09-20 |
TW200305029A (en) | 2003-10-16 |
JP3693119B2 (ja) | 2005-09-07 |
JPWO2003071299A1 (ja) | 2005-06-16 |
US7224161B2 (en) | 2007-05-29 |
CN1533506A (zh) | 2004-09-29 |
KR20030085099A (ko) | 2003-11-01 |
EP1486792A4 (en) | 2007-02-28 |
KR100522665B1 (ko) | 2005-10-19 |
EP1486792B1 (en) | 2013-10-02 |
AU2003211249A1 (en) | 2003-09-09 |
TWI259284B (en) | 2006-08-01 |
EP1486792A1 (en) | 2004-12-15 |
US20050116708A1 (en) | 2005-06-02 |
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