JP2000172335A - Magnetic indicator - Google Patents
Magnetic indicatorInfo
- Publication number
- JP2000172335A JP2000172335A JP10348629A JP34862998A JP2000172335A JP 2000172335 A JP2000172335 A JP 2000172335A JP 10348629 A JP10348629 A JP 10348629A JP 34862998 A JP34862998 A JP 34862998A JP 2000172335 A JP2000172335 A JP 2000172335A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- amorphous alloy
- flake
- thickness
- alloy piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000003550 marker Substances 0.000 claims description 23
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- -1 polyethylene Polymers 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 239000012790 adhesive layer Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 230000007797 corrosion Effects 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 206010017577 Gait disturbance Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、誘導路に沿って配
置された標識体を磁気センサで検知しながら視覚障害者
や無人搬送車等を誘導する磁気誘導システムに用いる磁
気標識体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic marker used in a magnetic guidance system for guiding a visually impaired person or an automatic guided vehicle while detecting a marker disposed along a taxiway with a magnetic sensor.
【０００２】[0002]
【従来の技術】工場や倉庫或いはゴルフ場等において、
荷物の移送を目的として、無人搬送車が利用されてい
る。この無人搬送車の移動は、例えば埋設したワイヤに
流れる低周波電流による磁界を、搬送車上の左右２個の
ピックアップコイルで検出し、コイルとワイヤの距離を
一定に保つ様にして搬送車を移動させる方式や、磁性体
を床面に設置し、この磁性体をセンサで検知する電磁方
式のものがある。更には、光学反射式、レーザービーム
式、画像認識方式等がある。2. Description of the Related Art In factories, warehouses or golf courses,
Automated guided vehicles are used to transfer luggage. The movement of the automatic guided vehicle is performed, for example, by detecting a magnetic field due to a low-frequency current flowing through the buried wire by two pickup coils on the left and right of the guided vehicle, and keeping the distance between the coil and the wire constant. There is a moving type or an electromagnetic type in which a magnetic body is installed on a floor surface and the magnetic body is detected by a sensor. Further, there are an optical reflection type, a laser beam type, an image recognition type, and the like.
【０００３】この様な誘導方式を盲人等の視覚障害者に
応用する場合、標識体として、軟磁性体を用いるが、軟
磁性磁気標識体として現在最も一般的に利用されている
のはフェライトの粉末をセメントや樹脂、或いはアスフ
ァルト等と混合して固めた成形体である。しかしなが
ら、これらの標識体は、成形体としての軟磁気特性の値
が十分でないために、感度が不十分である。感度を向上
させるために、フェライト粉末の充填率を高める必要が
あるが、充填率を高めると成形体を工業的に製造する上
で技術的な困難を伴う上に、成形体の強度が劣るという
問題が生じる。When such an induction method is applied to a visually impaired person such as a blind person, a soft magnetic material is used as a marker, but the most commonly used soft magnetic marker at present is ferrite. It is a compact formed by mixing powder with cement, resin, asphalt, or the like. However, the sensitivity of these markers is insufficient due to insufficient soft magnetic properties as a molded article. In order to improve the sensitivity, it is necessary to increase the filling rate of the ferrite powder, but if the filling rate is increased, it is technically difficult to industrially manufacture the molded body, and the strength of the molded body is inferior. Problems arise.
【０００４】また、磁界を検出して無人搬送車の移動を
行う磁気誘導方式は、床面に連続して標識体を敷設する
ことが一般的である。しかし、連続した状態で敷設され
る標識体の一部に、例えばはく離、端部欠け、損傷等が
生じると、敷設した磁気標識体を全部はく離し、新しい
標識体を再度その場所に敷設する必要があるため、施工
が面倒でコストが高くなるという欠点を持っている。ま
た、床面に敷設する標識体の厚みが厚くなりすぎると、
人がつまずいたり、標識体のはく離、縁の欠け等の原因
となる問題がある。[0004] In the magnetic guidance system in which an automatic guided vehicle is moved by detecting a magnetic field, a sign is generally laid continuously on the floor. However, if, for example, peeling, chipping at an end, damage, or the like occurs on a part of the markers laid in a continuous state, it is necessary to remove all the laid magnetic markers and lay a new marker again at that location. Therefore, there is a disadvantage that the construction is troublesome and the cost is high. Also, if the thickness of the sign laid on the floor is too thick,
There is a problem that causes a person to trip, a peeling of the marker, a chipping of the edge, and the like.
【０００５】この様な問題を解決するために、特開平１
−２９６３１３号公報に記載の磁気標識体は、フレーク
状軟磁性非晶質合金片を、非磁性材の薄板に配した磁気
標識体が開示されている。これに開示されている非晶質
合金は、コバルト基合金であるため、地金そのものが高
価であり、その為、高価な地金を用いて製作するフレー
ク状非晶質合金片も高価であるという問題がある。In order to solve such a problem, Japanese Patent Laid-Open No.
No. 296313 discloses a magnetic marker in which flake-like soft magnetic amorphous alloy pieces are arranged on a thin plate of a nonmagnetic material. Since the amorphous alloy disclosed therein is a cobalt-based alloy, the base metal itself is expensive, and therefore, a flake-like amorphous alloy piece manufactured using expensive base metal is also expensive. There is a problem.
【０００６】[0006]
【発明が解決しようとする課題】従って、本発明は、磁
気誘導方式における標識体の感度が良好で且つ施工性に
優れ、床面へ敷設しても走行等が容易であり、且つ軟磁
気特性と耐食性の良好なフレーク状非晶質合金片を基材
とした比較的安価な磁気標識体を提供するものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides a magnetic guide system which has good sensitivity and excellent workability of a marker, allows easy running even when laid on a floor, and has a soft magnetic property. And a relatively inexpensive magnetic marker using a flake-like amorphous alloy piece having good corrosion resistance as a base material.
【０００７】[0007]
【課題を解決するための手段】本発明は、前述した課題
を解決するために、磁気標識体に使われるフレーク状非
晶質合金片の材質を、Ｆｅが７３．５〜７４．５at％、
Ｃｒが３．７５〜４．２５at％、Ｓｉが９．７５〜１
０．２５at％、Ｂが１１．７５〜１２．２５at％であ
り、且つ、その厚みが１０〜５０μm、最大厚さに対す
る最大長さの比であるアスペクト比が１００〜５０００
であり、フレーク状非晶質合金片をｍ2あたり１５０〜
４５０ｇ非磁性材のＰＥＴフィルム間に均一に配し、非
磁性材の片側に粘着剤層を有し、当該標識体の厚みが
０．５mm以下である磁気標識体を提供する。According to the present invention, in order to solve the above-mentioned problems, the material of the flake-like amorphous alloy piece used for the magnetic label is 73.5 to 74.5 at% Fe.
3.75 to 4.25 at% of Cr, 9.75 to 1 of Si
0.25 at%, B is 11.75 to 12.25 at%, and the thickness is 10 to 50 μm, and the aspect ratio, which is the ratio of the maximum length to the maximum thickness, is 100 to 5000.
, And the 150 per m 2 of flake-shaped amorphous alloy pieces
A magnetic marker having a pressure-sensitive adhesive layer on one side of the nonmagnetic material, wherein the thickness of the marker is 0.5 mm or less, is provided evenly between the PET films of 450 g nonmagnetic material.
【０００８】本発明の標識体は、薄いために、つまずい
たり、はく離、縁の欠け等の問題がなくなり、局部的に
敷設するために施工性が良好となり、局部修正が容易と
なり、また、粘着剤が付与されているため、迅速に敷設
することが可能で施工性が容易となった。更には、磁気
標識体に使われているフレーク状非晶質合金片の材質を
鉄基合金とすることで、比較的安価で耐食性と感度の良
好な磁気標識体を提供することができる。Since the marker of the present invention is thin, it does not cause problems such as stumbling, peeling, chipping of edges, etc., and since it is locally laid, workability is good, local correction is easy, and adhesion is easy. Since the agent was provided, it was possible to lay quickly and the workability was facilitated. Further, by using an iron-based alloy as the material of the flake-like amorphous alloy piece used for the magnetic marker, it is possible to provide a magnetic marker which is relatively inexpensive and has good corrosion resistance and sensitivity.
【０００９】[0009]
【発明の実施の形態】図１を参照する。磁気標識体１に
使われるフレーク状非晶質合金片２の材質が、Ｆｅが７
３．５〜７４．５at％、Ｃｒが３．７５〜４．２５at
％、Ｓｉが９．７５〜１０．２５at％、Ｂが１１．７５
〜１２．２５at％であり、且つ、その厚みが１０〜５０
μm、最大厚さに対する最大長さの比であるアスペクト
比が１００〜５０００であるフレーク状非晶質合金片を
キャビテーション法により製作し、このフレーク状非晶
質合金片をｍ2あたり１５０〜４５０ｇの対のポリエチ
レンフィルム３間に均一に配して密着させ、フレーク２
をサンドイッチさせたフィルム３を、木材、セラミック
ス、プラスチック等の非磁性物質の薄板４で挟み、タイ
ル状のプレートを作る。非磁性材薄板４の片側に粘着剤
層５を設け、当該標識体１の厚みが０．５mm以下である
タイル状の磁気標識体を製作した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. The material of the flake-like amorphous alloy piece 2 used for the magnetic marker 1 is Fe 7
3.5-74.5at%, Cr 3.75-4.25at
%, Si is 9.75 to 10.25 at%, and B is 11.75.
-12.25 at%, and the thickness is 10-50
μm, a flake-like amorphous alloy piece having an aspect ratio of 100 to 5000, which is a ratio of a maximum length to a maximum thickness, is manufactured by a cavitation method, and the flake-like amorphous alloy piece is 150 to 450 g per m 2 . Flake 2
Is sandwiched between thin plates 4 of a non-magnetic substance such as wood, ceramics, plastics, etc. to form a tile plate. The adhesive layer 5 was provided on one side of the nonmagnetic thin plate 4, and a tile-shaped magnetic marker having a thickness of the marker 1 of 0.5 mm or less was manufactured.
【００１０】本発明の磁気標識体に使用されるフレーク
状鉄系非晶質合金片２の化学組成は、Ｆｅ78−Ｓｉ10−
Ｂ12を出発組成とし、耐食性と軟磁気特性が向上できる
元素を添加し、実験を重ねた結果、Ｆｅ74−Ｃｒ4−Ｓ
ｉ10−Ｂ12が軟磁気特性及び耐食性が良好な鉄系非晶質
合金であることを見いだした。各元素の組成域は、Ｆｅ
の含有量においては、７３．５at％以下では特徴として
いる高磁束密度が低くなり、７４．５at％では耐食性が
確保できなくなる。軟磁気特性及び耐食性を確保するた
めには７３．５〜７４．５at％が望ましい。The chemical composition of the flaky iron-based amorphous alloy piece 2 used in the magnetic label of the present invention is Fe 78 -Si 10-
The B 12 as a starting composition, result is added an element capable of improving the corrosion resistance and soft magnetic properties were repeated experiments, Fe 74 -Cr 4 -S
It has been found that i 10 -B 12 is an iron-based amorphous alloy having good soft magnetic properties and corrosion resistance. The composition range of each element is Fe
If the content is less than 73.5 at%, the characteristic high magnetic flux density becomes lower, and if it is 74.5 at%, the corrosion resistance cannot be secured. In order to secure soft magnetic characteristics and corrosion resistance, 73.5 to 74.5 at% is desirable.
【００１１】更に、Ｃｒの含有量においては３．７５at
％以下では耐食性が低下し、４．２５at％では軟磁気特
性が確保できない。軟磁気特性及び耐食性を確保するた
めには３．７５〜４．２５at％が望ましい。Ｓｉ及びＢ
の含有量においては、それぞれ９．７５、１１．７５at
％以下、及び１０．２５、１２．２５at％以上では軟磁
気特性が確保できない。軟磁気特性及び耐食性を確保す
るためには９．７５〜１０．２５、１１．７５〜１２．
２５at％が望ましい。表１に本発明材と実験にて検討し
た比較材の直流磁気特性を示す。実効透磁率及び保磁力
が最も良いものが本発明の磁気標識体に使われる鉄系非
晶質合金である。ここでの実効透磁率は、リボン状試料
を用いて、磁気的に飽和する磁界まで直流磁界を印加し
た時の磁束密度をその時の印加磁界で割った値を意味す
る。Further, the content of Cr is 3.75 at.
% Or less, the corrosion resistance decreases, and if it is 4.25 at%, soft magnetic properties cannot be secured. In order to secure soft magnetic characteristics and corrosion resistance, 3.75 to 4.25 at% is desirable. Si and B
Are 9.75 and 11.75 at, respectively.
% Or less, or 10.25 or 12.25 at% or more, soft magnetic properties cannot be secured. In order to secure soft magnetic characteristics and corrosion resistance, 9.75 to 10.25, 11.75 to 12.
25 at% is desirable. Table 1 shows the DC magnetic characteristics of the material of the present invention and the comparative material studied in the experiment. The one having the best effective magnetic permeability and coercive force is an iron-based amorphous alloy used for the magnetic label of the present invention. The effective magnetic permeability here means a value obtained by dividing a magnetic flux density when a DC magnetic field is applied to a magnetically saturated magnetic field using a ribbon-shaped sample by the applied magnetic field at that time.
【００１２】[0012]
【表１】 [Table 1]
【００１３】本発明の磁気標識体に使用されるフレーク
状鉄系非晶質合金片２の最大厚みと最大長さの比である
アスペクト比は、１００以下では反磁界の影響により良
好な軟磁気特性が得られず、５０００以上ではフィルム
３上への分散状態が均一にならない。従って、最大厚み
と最大長さの比であるアスペクト比は、１００〜５００
０である必要があり、好ましくは１５０〜２０００であ
ることが望ましい。また、ポリエチレンのフィルム３上
へ分散するフレーク状非晶質合金片２の分散重量は、ｍ
2あたり、１５０ｇ以下では磁気センサの感度に応答し
にくくなる。また、ｍ2当たりの分散重量が４５０ｇ以
上になるとフィルム間の密着性が悪くなるため、表２に
示す如く、フィルム３間に分散するフレーク状非晶質合
金片（４Ｃｒ−１０Ｓｉ−１２Ｂ−残Ｆｅ）２の分散重
量は、１５０〜４５０ｇ/ｍ2が望ましい、更に好ましく
は、２５０〜３５０ｇ/ｍ2が望ましい。When the aspect ratio, which is the ratio of the maximum thickness to the maximum length of the flake-like iron-based amorphous alloy piece 2 used in the magnetic marker of the present invention, is 100 or less, a favorable soft magnetic property is obtained due to the influence of the demagnetizing field. If the properties are not obtained, the dispersion state on the film 3 is not uniform if it is 5000 or more. Therefore, the aspect ratio, which is the ratio between the maximum thickness and the maximum length, is 100 to 500.
It must be 0, and preferably 150 to 2000. The dispersion weight of the flake-like amorphous alloy piece 2 dispersed on the polyethylene film 3 is m
If it is less than 150 g per 2 , it becomes difficult to respond to the sensitivity of the magnetic sensor. On the other hand, if the dispersion weight per m 2 is 450 g or more, the adhesion between the films deteriorates. Therefore, as shown in Table 2, the flake-like amorphous alloy pieces (4Cr-10Si-12B- distributed weight of Fe) 2 is, 150~450g / m 2 is preferable, more preferably, 250-350 g / m 2 is desirable.
【００１４】[0014]
【表２】 [Table 2]
【００１５】本発明の磁気標識体に使用されるフレーク
状鉄系非晶質合金片は、耐食性を向上させるためにＣｒ
を添加している。図２に高温高湿試験結果を示す。図２
のサンプル番号１，２，３は、表２中の試料名である本
発明合金１，２，３に相当する。高温高湿条件は、温度
６０℃、湿度９５％で２００時間後のポリエチレンのフ
ィルム３と、フィルム間に分散されたフレーク状鉄系非
晶質合金片２との重量変化はほとんどなく、耐食性が良
好であることが認識される。また、励起用と検出用の２
組のコイルを用い、励起用コイルで交流磁場（〜４００
Ｈｚ）を発生させ、検出用コイルで、標識体の接近によ
って起こる磁場検出を２０〜３０mmの間隔でも充分にと
れることが確認できた。The flake-like iron-based amorphous alloy piece used for the magnetic label of the present invention is made of Cr to improve corrosion resistance.
Is added. FIG. 2 shows the results of the high-temperature and high-humidity test. FIG.
Sample numbers 1, 2, and 3 correspond to the present alloys 1, 2, and 3, which are the sample names in Table 2. In the high-temperature and high-humidity condition, the weight of the polyethylene film 3 after 200 hours at a temperature of 60 ° C. and a humidity of 95% and the weight of the flake-like amorphous amorphous alloy piece 2 dispersed between the films are almost unchanged, and the corrosion resistance is low. It is recognized that it is good. In addition, two for excitation and one for detection
Using a set of coils, an alternating magnetic field (~ 400
Hz), and it was confirmed that the detection coil can sufficiently detect the magnetic field caused by the approach of the marker even at intervals of 20 to 30 mm.
【００１６】[0016]
【発明の効果】従って、本発明による磁気標識体は、特
開平１−２９６３１３号公報に記載の磁気標識体に使わ
れているフレーク状非晶質合金片を比較的安価な非晶質
合金とすることで、比較的安価な磁気標識体を提供する
ことができる。Accordingly, the magnetic marker according to the present invention can be obtained by replacing the flake-like amorphous alloy piece used for the magnetic marker described in JP-A-1-296313 with a relatively inexpensive amorphous alloy. By doing so, a relatively inexpensive magnetic label can be provided.
【図１】図１は、磁気標識体の断面図である。FIG. 1 is a sectional view of a magnetic marker.
【図２】図２は、高温高湿試験結果を示すグラフ図であ
る。FIG. 2 is a graph showing the results of a high-temperature and high-humidity test.
２ 非晶質合金片 ３ フィルム ４ 薄板 ５ 粘着剤 2 Amorphous alloy piece 3 Film 4 Thin plate 5 Adhesive
Claims (3)
合金片の材質が、Ｆｅが７３．５〜７４．５at％、Ｃｒ
が３．７５〜４．２５at％、Ｓｉが９．７５〜１０．２
５at％、Ｂが１１．７５〜１２．２５at％であり、且
つ、その厚みが１０〜５０μm、最大厚さに対する最大
長さの比であるアスペクト比１００〜５０００であるフ
レーク状非晶質合金片をｍ2あたり１５０〜４５０ｇ非
磁性材の間に均一に配し、非磁性材の片側に粘着剤層を
有し、当該標識体の厚みが０．５mm以下であることを特
徴とする磁気標識体。1. The material of a flake-like amorphous alloy piece used for a magnetic label is Fe of 73.5 to 74.5 at%, Cr
Is 3.75 to 4.25 at%, Si is 9.75 to 10.2
A flake-shaped amorphous alloy piece having an atomic ratio of 5 at%, B of 11.75 to 12.25 at%, and a thickness of 10 to 50 μm and an aspect ratio of 100 to 5000, which is the ratio of the maximum length to the maximum thickness. Is disposed uniformly between 150 to 450 g of non-magnetic material per m 2 , has a pressure-sensitive adhesive layer on one side of the non-magnetic material, and the thickness of the label is 0.5 mm or less. body.
３．７５〜４．２５at％、Ｓｉが９．７５〜１０．２５
at％、Ｂが１１．７５〜１２．２５at％であり、且つ、
その厚みが１０〜５０μm、最大厚さに対する最大長さ
の比であるアスペクト比１００〜５０００であるフレー
ク状非晶質合金片をｍ2あたり１５０〜４５０ｇを合成
樹脂材のフィルム間に挟持させたものを含むことを特徴
とする磁気標識体。2. An Fe content of 73.5 to 74.5 at%, a Cr content of 3.75 to 4.25 at%, and a Si content of 9.75 to 10.25.
at%, B is 11.75 to 12.25 at%, and
A flake-shaped amorphous alloy piece having a thickness of 10 to 50 μm and an aspect ratio of 100 to 5000, which is the ratio of the maximum length to the maximum thickness, was sandwiched between synthetic resin material films at 150 to 450 g per m 2 . A magnetic label characterized by containing:
せている請求項２に記載の磁気標識体。3. The magnetic marker according to claim 2, wherein the film is held on a nonmagnetic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10348629A JP2000172335A (en) | 1998-12-08 | 1998-12-08 | Magnetic indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10348629A JP2000172335A (en) | 1998-12-08 | 1998-12-08 | Magnetic indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000172335A true JP2000172335A (en) | 2000-06-23 |
Family
ID=18398288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10348629A Pending JP2000172335A (en) | 1998-12-08 | 1998-12-08 | Magnetic indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000172335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002050951A1 (en) * | 2000-12-18 | 2002-06-27 | Mitsubishi Materials Corporation | Antenna for rfid |
-
1998
- 1998-12-08 JP JP10348629A patent/JP2000172335A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002050951A1 (en) * | 2000-12-18 | 2002-06-27 | Mitsubishi Materials Corporation | Antenna for rfid |
| US7161542B2 (en) | 2000-12-18 | 2007-01-09 | Mitsubishi Materials Corporation | Antenna for RFID |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6355607B2 (en) | Magnetic marker and magnetic marker detection system | |
| US5051034A (en) | Magnetically detectable plastic pipe | |
| DE69835961D1 (en) | METHOD FOR GLOWING AMORPHIC TAPES AND LABEL FOR ELECTRONIC MONITORING SYSTEM | |
| US5821129A (en) | Magnetochemical sensor and method for remote interrogation | |
| JP2008047148A (en) | Conformable magnetic articles for use with traffic-bearing surfaces | |
| CN100565610C (en) | The drive assist system that is used for infrastructure, mobile object cooperation | |
| WO2017069089A1 (en) | Magnetic marker and magnetic marker detection system | |
| Wielinga et al. | Characteristics of RF-sputtered CoCr films | |
| JP2000172335A (en) | Magnetic indicator | |
| EP0594243A2 (en) | Magnetic field sensor | |
| Závěta et al. | A domain study of magnetization processes in a stress-annealed metallic glass ribbon for fluxgate sensors | |
| JP2537609B2 (en) | Magnetic detection taxiway | |
| JPH0737127Y2 (en) | Amorphous label for magnetic induction | |
| JP6729534B2 (en) | Magnetic marker and magnetic marker detection system | |
| JPH0755604Y2 (en) | Magnetic amorphous sign for vehicle guidance | |
| Shin et al. | Asymmetric hysteresis loops in Co-based ferromagnetic alloys | |
| JPH0546081Y2 (en) | ||
| JPH0737126Y2 (en) | Amorphous label for magnetic induction | |
| JPH0261704A (en) | Amorphous marker body for magnetic induction | |
| JP2695927B2 (en) | Magnetic amorphous signs for vehicle guidance | |
| JPH0755605Y2 (en) | Magnetic amorphous sign for vehicle guidance | |
| JPH0737125Y2 (en) | Amorphous label for magnetic induction | |
| EP1145204B1 (en) | Security device comprising soft magnetic thin film | |
| JP2514958B2 (en) | Magnetic amorphous sign for vehicle guidance | |
| JPH01237410A (en) | Block state magnetic sign |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20050920 |