JPH0261586A - Film for magnetic marker body - Google Patents
Film for magnetic marker bodyInfo
- Publication number
- JPH0261586A JPH0261586A JP63211581A JP21158188A JPH0261586A JP H0261586 A JPH0261586 A JP H0261586A JP 63211581 A JP63211581 A JP 63211581A JP 21158188 A JP21158188 A JP 21158188A JP H0261586 A JPH0261586 A JP H0261586A
- Authority
- JP
- Japan
- Prior art keywords
- film
- soft magnetic
- magnetic powder
- magnetic
- sheet
- 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.)
- Granted
Links
- 239000003550 marker Substances 0.000 title abstract description 9
- 239000006247 magnetic powder Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920000728 polyester Polymers 0.000 claims abstract description 3
- 229910002796 Si–Al Inorganic materials 0.000 claims abstract 2
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- 229920005992 thermoplastic resin Polymers 0.000 abstract description 3
- 238000004090 dissolution Methods 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 11
- 239000003973 paint Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は磁気センサーで認識可能な磁性標識体用フィル
ムに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a film for a magnetic label that can be recognized by a magnetic sensor.
（従来の技術）
工場内や各種の催場内、或いは一般道路での無人車誘導
システム或いは盲人誘導システムが開発されているが、
このシステムは、透磁率の違いや磁化のし易さの違いに
より、軟磁性材を含有させた標識体をＰ！識・識別をな
す磁気センサー（たとえば、特開昭６１−２３００７３
号公報参照）と、前述した標識体との組合せからなる。(Prior art) Unmanned vehicle guidance systems or blind person guidance systems have been developed for use in factories, various event venues, or on general roads.
This system uses a marker containing a soft magnetic material as a P! Magnetic sensors for identification and identification (for example, Japanese Patent Application Laid-Open No. 61-230073
(see Japanese Patent Publication) and the above-mentioned label.
そして、このシステムは標識体を床や通路上に埋設し、
磁気センサーにより軟磁性材を検知し、無人車或いは盲
人に進行方向或いは通路を指示するものである。This system then embeds the sign on the floor or walkway,
A magnetic sensor detects a soft magnetic material and instructs an unmanned vehicle or a blind person in the direction of travel or path.
標識体として、これ迄フェライトを使用している。Until now, ferrite has been used as a marker.
このようなフェライトのシートを用いた標識体とは別に
、軟磁性体の粉末と塗料とを混合して、道路や床面にこ
の混合物を塗工して磁性標識体を敷設している。In addition to such signs using ferrite sheets, magnetic signs are laid by mixing soft magnetic powder and paint and coating the mixture on roads and floors.
（本発明が解決しようとする課題）
軟磁性体の粉末を顔料としてバインダー又は塗料に混入
して塗料化し、これを塗工することは工法的には磁性標
識体を敷設する最っとも簡便な方法である。(Problem to be solved by the present invention) Mixing soft magnetic powder as a pigment into a binder or paint to form a paint and coating this is the simplest construction method for laying magnetic markers. It's a method.
しかしながら、この工法による磁性標識体の敷設は、軟
磁性体粉末の量が磁気センサー感度に大きな影響を与え
るため、該粉末の量は精度よく管理する必要がある。加
えて、塗料化した場合、軟磁性体粉末が沈降するので、
塗工前に充分に攪拌して軟磁性体粉末を均質に分散して
おく必要がある。仮りに、攪拌作業を確実になして塗工
しても、第１図に示すように、実際の塗工面に凹凸が有
ると、塗膜厚は塗工面の凹凸によって異なることになる
。これは軟磁性粉体の量を塗工面の凹凸によって異にす
ることになるので、磁気センサーの感度に大きな影響を
与えるようになる。即ち、第１図に示す標識体に対する
磁気センサーの出力は第３図の上方のグラフ（塗料とし
て表示）で表され、出力のバラツキが大きい。However, when laying a magnetic marker using this construction method, the amount of soft magnetic powder has a great effect on the sensitivity of the magnetic sensor, so the amount of the powder needs to be controlled with precision. In addition, when made into a paint, the soft magnetic powder will settle, so
Before coating, it is necessary to sufficiently stir the soft magnetic powder to homogeneously disperse it. Even if the stirring operation is performed reliably during coating, if the actual coated surface has irregularities as shown in FIG. 1, the coating thickness will vary depending on the irregularities of the coated surface. This causes the amount of soft magnetic powder to vary depending on the unevenness of the coated surface, which greatly affects the sensitivity of the magnetic sensor. That is, the output of the magnetic sensor for the marker shown in FIG. 1 is represented by the upper graph in FIG. 3 (displayed as paint), and the output varies widely.
それ故に、本発明は、前述した従来技術の不具合を解消
させることを解決すべき課題とする。Therefore, it is an object of the present invention to solve the above-mentioned problems of the prior art.
（課題を解決するための手段とその作用）本発明は、前
述した課題を解決するために基本的には、熱可塑性プラ
スチックと軟磁性体粉末との混合°体を均一な厚みのシ
ート状のフィルムにした手段を採用する。このフィルム
を道路や床面に熱溶着させて、磁気標識体とする。(Means for Solving the Problems and Their Effects) In order to solve the above-mentioned problems, the present invention basically consists of forming a mixture of thermoplastic plastic and soft magnetic powder into a sheet of uniform thickness. Adopt a film method. This film is thermally welded to roads and floors to create magnetic signs.
すなわち、軟磁性粉末とプラスチックを溶剤を用いて、
混合させるか熱溶融により混合させてシート状に成形し
た後、所定の形状に切断して帯状即ちフィルム状の標識
体とする。この際用いるプラスチックとしては、塩化ビ
ニール、ポリエステル、ウレタン、アクリル等の熱可塑
性樹脂を用いる。軟磁性体粉末としては、Ｆｅ−５ｉ−
Ａ＃系合金をエレクトロスラグ溶解あるいは高周波溶解
によりインゴットを製造し、スタンプミルあるいは振動
ボールミルで粉砕して粉粒体としたものを使用する。こ
の場合、合金組成としては、重Ｉｔｍ度で、基体の組成
として、Ｆｅ２７７％、５％≦Ｓｉ≦１）％、２％≦Ａ
Ｎ≦７％とする。但し、磁気特性あるいは耐食性改善の
ため添加元素として、Ｎｉ、 Ｔｉ、Ｃｒｓ Ｍｎｓ
Ｃ０％ Ｎ０％ Ｖ％ Ｂ、、Ｃの１種又は２種以上を
合計で５％を上限として添加してもよい。Ｔｉ、Ｃｒは
耐食性を向上させ、Ｎ１％ Ｍｎ−、Ｃｏ−、Ｎ０％
Ｖ、ＢｌＣは磁気特性（角型、あるいは初透磁率）を若
干改善する効果がある。この組成範囲のものであれば、
透磁率も大きく、熱処理により、さらに磁気特性も改善
されると同時にＦｅ、 Ｓｔ、 Ａｌの複合酸化物の被
膜が表面に形成され、耐食性も向上する。In other words, by using soft magnetic powder and plastic with a solvent,
After mixing or heat-melting the mixture and forming it into a sheet, it is cut into a predetermined shape to obtain a band-like or film-like sign. The plastic used in this case is a thermoplastic resin such as vinyl chloride, polyester, urethane, or acrylic. As the soft magnetic powder, Fe-5i-
An ingot is produced from an A# alloy by electroslag melting or high frequency melting, and the ingot is ground into powder using a stamp mill or a vibrating ball mill. In this case, the alloy composition is heavy Itm degree, and the base composition is Fe277%, 5%≦Si≦1)%, 2%≦A
N≦7%. However, Ni, Ti, Crs, Mns, etc. may be added as additive elements to improve magnetic properties or corrosion resistance.
C0% N0% V% One or more of B, , and C may be added up to a total of 5%. Ti, Cr improves corrosion resistance, N1% Mn-, Co-, N0%
V and BIC have the effect of slightly improving magnetic properties (square shape or initial magnetic permeability). If it is in this composition range,
It has a high magnetic permeability, and heat treatment further improves its magnetic properties, and at the same time forms a composite oxide film of Fe, St, and Al on its surface, improving its corrosion resistance.
次にスタンプミル、振動ミルにより、粉砕して粉粒体と
する訳であるが、この場合、磁気特性は、粒径が大きい
方が、軟磁気特性は良好で、コスト的にも安価になるが
、フィルムにして用いるには、３鰭ぐらいが実用上の上
限である。一方、粒径が５μ以下のものは、保磁力が大
きくなり、軟磁気特性が阻害されるため、この割合が増
大することは好ましくない。又、粒度分布が特定粒度範
囲のせまい範囲に集中する場合は磁性体の占積率（５％
以上必要）を低下させるので、標識体として用いる場合
、磁性体の必要重量が増えるので得策ではない。適当な
粒径分布としては５μ〜３■ｌの範囲のものを少くとも
５０％以上含むものではなくてはならない。又、フィル
ムの厚さも３１■を超えると、床あるいは、道路に溶着
した場合、床面あるいは路面とに沿った凹凸とならず平
坦になり易いので、フィルムの厚さを０．１０〜３ｍｌ
とする。Next, it is crushed into powder using a stamp mill or a vibration mill.In this case, the larger the particle size, the better the soft magnetic properties and the lower the cost. However, for use as a film, the practical upper limit is about three fins. On the other hand, if the particle size is 5 μm or less, the coercive force becomes large and the soft magnetic properties are inhibited, so it is not preferable that this ratio increases. In addition, if the particle size distribution is concentrated in a narrow range of a specific particle size range, the space factor of the magnetic material (5%
Therefore, when used as a label, it is not a good idea because the required weight of the magnetic material increases. A suitable particle size distribution must contain at least 50% of the particles in the range of 5 μ to 3 μl. Also, if the film thickness exceeds 31cm, when it is welded to the floor or road, it will not be uneven along the floor or road surface and will tend to become flat, so the thickness of the film should be 0.10 to 3ml.
shall be.
このようにして得られた上記の組成および粒径範囲のも
のであれば、後述する熱処理をしないものでも、０．１
０〜３龍の厚さのフィルムとしておけば、乾電池で駆動
されるような比較的微弱な励磁界を用いる磁気センサー
にも十分感応する。As long as the particles obtained in this way have the above composition and particle size range, even if they are not subjected to the heat treatment described below, 0.1
If the film is made to have a thickness of 0 to 3 mm, it will be sufficiently sensitive to a magnetic sensor that uses a relatively weak excitation field, such as one driven by a dry battery.
しかし、上述組成および粒径範囲のものをさらに酸化性
雰囲気中で２００℃〜１０００℃の温度範囲内に保持す
る熱処理で、Ｆｅ、 ５ｉＳＡＮの複合酸化物が粒子表
面に皮膜として生成し、耐食性が向上するとともにＩ
ＫＨｚ以上での周波数域での透磁率も改善される。この
際、酸化皮膜が生成することによる磁気特性の劣化はな
く、むしろ、渦電流損失が減少し、Ｉ ＫＨｚ以上の周
波数域での磁気特性が良くなる。以上のように調製され
た合金粉をプラスチックと混合するか、適当なバインダ
ーと混ぜてフィルムとして、路面あるいは床面に溶着し
た場合、フィルムの厚さで０．１０〜３龍程度のものと
することにより、Ｉ ＫＨ２〜ｌ Ｍｌｌｚ周波数域で
検知可能な磁化が得られる。However, when particles with the above composition and particle size range are further heat-treated in an oxidizing atmosphere and kept within a temperature range of 200°C to 1000°C, composite oxides of Fe and 5iSAN are formed as a film on the particle surface, reducing corrosion resistance. As I improve I
Magnetic permeability in the frequency range above KHz is also improved. At this time, there is no deterioration of magnetic properties due to the formation of an oxide film, but rather, eddy current loss is reduced and magnetic properties are improved in a frequency range of I KHz or higher. When the alloy powder prepared as described above is mixed with plastic or an appropriate binder and welded to a road or floor surface as a film, the thickness of the film is approximately 0.10 to 3. This results in a detectable magnetization in the I KH2 to I Mllz frequency range.
このように予め磁性粉を均一分散させた帯状プラスチッ
クフィルムをバーナー等で加熱して路面に熱融着した場
合には図２に示すように、路面の凹凸に沿って層状にフ
ィルムが融着するため、磁性層の厚さが平均化され、最
終的に形成される標識体の性能のバラツキを抑えること
が出来る。この場合熱融着後の表面に凹凸が出来るが、
この場合、通常路面の凹凸より大きな凹凸となることは
ないので問題とならない。さらに熱融着の場合はシート
が加熱されてから冷却されるとすぐに接着力が強固に発
現するので塗料の場合に乾燥時間が長いのに比べて施工
が短時間で終了するという利点がある。When a strip-shaped plastic film with magnetic powder uniformly dispersed in advance is heated with a burner or the like and thermally fused to the road surface, the film is fused in layers along the unevenness of the road surface, as shown in Figure 2. Therefore, the thickness of the magnetic layer is averaged, and variations in performance of the finally formed marker can be suppressed. In this case, unevenness will occur on the surface after heat fusion, but
In this case, there is no problem because the unevenness is not larger than that of a normal road surface. Furthermore, in the case of heat fusion, strong adhesive strength is developed as soon as the sheet is heated and then cooled, so it has the advantage that construction can be completed in a short time compared to the long drying time in the case of paint. .
（実施例）
ポリウレタン樹脂１に対して磁性粉１の割合の混合体を
溶剤をまぜて塗料化し、平滑なＡｌ板上に離形剤を塗布
し、その上に上記塗料を塗布し乾燥後Ａｌ板よりシート
をは（離させて厚さ１ｍのシート状の成形体とする。こ
れをアスファルト路面にバーナーで熱融着させて帯状の
標識体を形成した。用いた磁性粉はＦｆ！ｓｓ ｓｔ
９．Ｊ ｌ ｌ ５合金の平均粒径６３μのものを用い
た。交流の磁気センサーを標識体の表面に沿って移動さ
せた時の出力を第３図に本発明品として示す。第３図に
示す従来例と比べ、本発明の一例の出力のバラツキはき
わめて小さい。(Example) A mixture of 1 part polyurethane resin and 1 part magnetic powder is mixed with a solvent to form a paint, a mold release agent is applied onto a smooth Al plate, the above paint is applied on top of that, and after drying, the Al The sheet was separated from the board to form a sheet-like molded product with a thickness of 1 m. This was heat-fused to the asphalt road surface with a burner to form a band-shaped sign. The magnetic powder used was Ff!ss st.
9. Jll 5 alloy with an average grain size of 63μ was used. FIG. 3 shows the output when an AC magnetic sensor is moved along the surface of the marker, representing the product of the present invention. Compared to the conventional example shown in FIG. 3, the variation in output in the example of the present invention is extremely small.
（効 果）
本発明は、フィルムの厚みにより軟磁性体粉末の量を調
整できるので敷設面やセンサーに応じたフィルムの選択
ができる。(Effects) In the present invention, the amount of soft magnetic powder can be adjusted depending on the thickness of the film, so the film can be selected depending on the installation surface and sensor.
又、プラスチックの特性に応じて敷設面を選択すれば、
たとえば、車の多い処でも摩耗も少い。In addition, if you select the installation surface according to the characteristics of the plastic,
For example, even in areas with a lot of cars, there is less wear and tear.
第１図は従来例の敷設面の断面図、第２図は本発明の一
例の断面図、第３図は本例と従来例のセンサー出力を示
すグラフ図である。
代理人 弁理士 桑 原 英 明FIG. 1 is a sectional view of the installation surface of a conventional example, FIG. 2 is a sectional view of an example of the present invention, and FIG. 3 is a graph showing sensor outputs of this example and the conventional example. Agent Patent Attorney Hideaki Kuwahara
Claims (3)
を略均一な厚みのシート状フィルムに前記フィルムが床
面や道路面に熱溶着させられることを特徴とする磁気標
識体用フィルム。(1) A film for magnetic signs, characterized in that a mixture of thermoplastic plastic and soft magnetic powder is formed into a sheet-like film having a substantially uniform thickness, and the film is thermally welded to a floor or road surface.
請求項（１）の磁気標識体用フィルム。(2) The film for magnetic markers according to claim (1), wherein the soft magnetic powder is made of a Fe-Si-Al alloy.
テル、ウレタン、アクリルから選択されることを特徴と
する請求項（１）の磁性標識体用フィルム。(3) The film for magnetic markers according to claim (1), wherein the thermoplastic plastic is selected from vinyl chloride, polyester, urethane, and acrylic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63211581A JPH0833456B2 (en) | 1988-08-27 | 1988-08-27 | Film for magnetic labels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63211581A JPH0833456B2 (en) | 1988-08-27 | 1988-08-27 | Film for magnetic labels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261586A true JPH0261586A (en) | 1990-03-01 |
| JPH0833456B2 JPH0833456B2 (en) | 1996-03-29 |
Family
ID=16608134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63211581A Expired - Lifetime JPH0833456B2 (en) | 1988-08-27 | 1988-08-27 | Film for magnetic labels |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0833456B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2664691A1 (en) * | 1990-07-16 | 1992-01-17 | Mecagis | Device for producing a signal representative of a displacement |
| JP2008047148A (en) * | 1994-11-17 | 2008-02-28 | 3M Co | Conformable magnetic articles for use with traffic-bearing surfaces |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739085U (en) * | 1980-08-12 | 1982-03-02 | ||
| JPS6040876U (en) * | 1983-08-27 | 1985-03-22 | 住友電気工業株式会社 | Detection mark sheet |
| JPS62180287A (en) * | 1986-02-04 | 1987-08-07 | Nec Corp | Mixture for magnetic marker body |
| JPS63157210A (en) * | 1986-12-20 | 1988-06-30 | Nippon Denki Kankyo Eng Kk | Guide path for magnetic detection |
-
1988
- 1988-08-27 JP JP63211581A patent/JPH0833456B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5739085U (en) * | 1980-08-12 | 1982-03-02 | ||
| JPS6040876U (en) * | 1983-08-27 | 1985-03-22 | 住友電気工業株式会社 | Detection mark sheet |
| JPS62180287A (en) * | 1986-02-04 | 1987-08-07 | Nec Corp | Mixture for magnetic marker body |
| JPS63157210A (en) * | 1986-12-20 | 1988-06-30 | Nippon Denki Kankyo Eng Kk | Guide path for magnetic detection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2664691A1 (en) * | 1990-07-16 | 1992-01-17 | Mecagis | Device for producing a signal representative of a displacement |
| JP2008047148A (en) * | 1994-11-17 | 2008-02-28 | 3M Co | Conformable magnetic articles for use with traffic-bearing surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0833456B2 (en) | 1996-03-29 |
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