JP2011186840A - Embedded ic tag - Google Patents
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- JP2011186840A JP2011186840A JP2010052090A JP2010052090A JP2011186840A JP 2011186840 A JP2011186840 A JP 2011186840A JP 2010052090 A JP2010052090 A JP 2010052090A JP 2010052090 A JP2010052090 A JP 2010052090A JP 2011186840 A JP2011186840 A JP 2011186840A
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- 239000004568 cement Substances 0.000 claims abstract description 32
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 abstract description 22
- 239000000203 mixture Substances 0.000 abstract description 15
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 9
- 230000005855 radiation Effects 0.000 description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000003908 quality control method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011494 foam glass Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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- Details Of Aerials (AREA)
Abstract
Description
本発明は、コンクリート、モルタル、セメント混和物などに埋設して管理する埋設ＩＣタグに関する。 The present invention relates to an embedded IC tag that is embedded and managed in concrete, mortar, cement admixture or the like.
コンクリート、モルタル、セメント混和物等のセメント組成物の品質管理、物流管理におけるＩＣタグが用いられている。 IC tags are used in quality control and physical distribution management of cement compositions such as concrete, mortar, and cement admixtures.
ＩＣタグは、電子マネー、入退出管理、あるいは、物に取り付けて物流におけるトレーサビリティや品質管理などに用いられている。ＩＣタグは、無線通信によって、ＩＣタグと外部読書装置との間で個別ＩＤや各種情報をやり取りするものであるが、電波を用いるため、ＩＣタグ内にはアンテナが必要となる。無線通信におけるアンテナ特性は、３次元空間において、何れかの方向に指向性や偏波面を有し、アンテナに供給される高周波電源としての電波の周波数と、アンテナ形状、周囲の環境などに影響される。特定の方向に指向性を持たせた場合には、特定方向に対して利得が得られるため、２点間の通信において有利となり、通信距離を延長することができるが、逆に、指向性を有することによって特定の方向以外への利得や輻射が小さくなると、通信距離は短くなり、通信が困難となる。 The IC tag is used for electronic money, entrance / exit management, or attached to an object for traceability and quality control in physical distribution. The IC tag is used for exchanging individual IDs and various information between the IC tag and an external reading device by wireless communication. However, an antenna is required in the IC tag because radio waves are used. Antenna characteristics in wireless communication have directivity and polarization planes in any direction in a three-dimensional space, and are affected by the frequency of radio waves as the high-frequency power supplied to the antenna, the antenna shape, and the surrounding environment. The When directivity is given in a specific direction, gain is obtained in a specific direction, which is advantageous in communication between two points, and the communication distance can be extended. If the gain or the radiation in a direction other than a specific direction is reduced by having the communication distance, the communication distance becomes short and communication becomes difficult.
このような課題に対して、通常は、アンテナの効率をあげることは勿論のこと、使用用途に応じて、アンテナの指向性を利用し、あるいは指向性を高めて、その指向性に応じてアンテナを設置し、通信が安定的に確保できるようにしている。 In order to deal with such problems, it is usual to increase the efficiency of the antenna, as well as to use the antenna directivity or increase the directivity according to the usage, and to change the antenna according to the directivity. To ensure stable communication.
ＩＣタグについても、内蔵されるアンテナは、通常は指向性を有するために、特定方向に対して安定的に通信は可能であるが、一方で、方向によっては通信が困難となる場合がある。従って、ＩＣタグの利用では、通常、ＩＣタグの指向性の方向に対して、外部読書装置のアンテナの方向を向くように、ＩＣタグを持ったり、取り付けたりする。
また、ＩＣタグをコンクリート品質管理に用いる場合には、逆に指向性を広くしたＩＣタグが知られている（特許文献１）。
As for the IC tag, the built-in antenna usually has directivity, so that stable communication is possible in a specific direction. On the other hand, communication may be difficult depending on the direction. Therefore, when using the IC tag, the IC tag is usually held or attached so that the direction of the antenna of the external reading apparatus is directed to the direction of the directivity of the IC tag.
On the other hand, when using an IC tag for concrete quality control, an IC tag having a wide directivity is known (Patent Document 1).
コンクリート、モルタル、セメント混和物等のセメント組成物の維持管理、品質管理やトレーサビリティに、セメント組成物に指向性のあるＩＣタグを混入して使用する場合、セメント組成物は硬化前には流動性を有し、ＩＣタグの方向性が定まらず、また、硬化後にＩＣタグがランダムな配置となった場合に、特定方向からは読書き可能であるが、特定方向以外では通信できなくなることが予想される。 When using IC tags that are directional to the cement composition for maintenance, quality control and traceability of concrete, mortar, cement admixture, etc., the cement composition is fluid before curing. If the direction of the IC tag is not fixed, and the IC tag is randomly arranged after curing, it is possible to read and write from a specific direction, but it is expected that communication will be impossible in other directions Is done.
さらに、アンテナ設計によって指向性を極力抑えることも可能ではあるが、このように無指向性にすることによって、電波は全方向に輻射されてエネルギーが分散されるため、通信距離は全体的に低下する、といった課題がある。 Furthermore, it is possible to suppress the directivity as much as possible by the antenna design, but by making it non-directional in this way, radio waves are radiated in all directions and energy is dispersed, so the communication distance is reduced overall. There is a problem such as.
本発明はこれら問題点を解決し、セメント組成物にＩＣタグを混入して使用する場合において、指向性を有するＩＣタグを用いて通信距離を確保し、安定的な通信を可能とするものである。セメント組成物中にＩＣタグを埋設し、外部読書装置を用いてＩＣタグのＩＤや各種情報を読書きにおいて、その通信距離の向上を図り、セメント組成物の硬化前、あるいは硬化後に外部読書装置から読取りやすくすることを課題とした。 The present invention solves these problems, and in the case of using an IC tag mixed in a cement composition, it secures a communication distance by using an IC tag having directivity and enables stable communication. is there. The IC tag is embedded in the cement composition, and the reading distance of the IC tag ID and various information is read and written using an external reading device, the communication distance is improved, and the external reading device before or after the cement composition is cured. The problem was to make it easier to read.
ＩＣタグＬＳＩ、アンテナ、これらを内蔵した円球状または楕円球状被覆体を含むＩＣタグであって、ＩＣタグＬＳＩに接続するアンテナの指向性の方向を楕円球の短軸又は長軸方向に一致させることを特徴としたコンクリート、モルタル、セメント硬化体埋設用ＩＣタグ、を提供する。 An IC tag including an IC tag LSI, an antenna, and a spherical or elliptical spherical covering with these incorporated therein, and the directionality of the antenna connected to the IC tag LSI is made to coincide with the minor axis or major axis direction of the elliptical sphere There are provided an IC tag for embedding concrete, mortar, and hardened cement body.
前記楕円球の短軸／長軸比が、０．５から１．０である前記のＩＣタグ、を提供する。 Provided is the above IC tag, wherein the elliptical sphere has a minor axis / major axis ratio of 0.5 to 1.0.
前記楕円球状被覆材の材質が樹脂あるいはセメント混練物であり、重心の位置が、楕円球の短軸又は長軸上であって、その中心にないことを特徴とする前期のＩＣタグ、を提供する。 Provided is an IC tag of the previous period, characterized in that the material of the oval spherical covering material is resin or cement kneaded material, and the position of the center of gravity is on the short axis or long axis of the oval sphere but not in the center To do.
こうして、指向性を有するアンテナを備え、セメント組成物中においてＩＣタグが特定の方向を向くＩＣタグを提供することができる。 Thus, it is possible to provide an IC tag that includes an antenna having directivity and in which the IC tag faces a specific direction in the cement composition.
ここで、前記円球状または楕円球状被覆体は、幾何学的に完全な球体、楕円体でなくとも良い。例えば、実際の多面体で近似できる部分を含む被覆体であっても、この被覆体を直線で切り取った線分の最大長さを実測して、ａとし、その線分を垂直に２等分する面が切り取る前記被覆体の断面の面積と輪郭線を実測して、それぞれ、Ｓ、Ｌとすると許容範囲を求めることができる。 Here, the spherical or oval spherical covering may not be a geometrically perfect sphere or ellipsoid. For example, even for a covering including a portion that can be approximated by an actual polyhedron, the maximum length of a line segment obtained by cutting the covering is measured, and is set to a, and the line segment is vertically divided into two equal parts. By measuring the cross-sectional area and the contour line of the covering cut off by the surface and setting them as S and L, respectively, the allowable range can be obtained.
即ち、Ｌを円周とする円の面積Ｓ０とすると、１≧Ｓ／Ｓ０≧０．８、Ｓ０を面積とする円の直径をｂとすると、１≧ｂ／ａ≧０．５、である。この程度の幾何学的な変形であれば、充分に本発明の被覆体として使用できる。 That is, if L is the area S 0 of the circle having the circumference, 1 ≧ S / S 0 ≧ 0.8, and if the diameter of the circle having the area S 0 is b, 1 ≧ b / a ≧ 0.5 . Such a geometric deformation can be sufficiently used as the covering of the present invention.
ここで、アンテナの指向性は、電波の輻射方向と輻射強度との関係を示すもので、アンテナの形状、用いる周波数帯によって変化する。通常、輻射角と輻射強度との関係として、例えば、送信アンテナの指向性であれば、送信アンテナを上下、左右に方向を変化させ、受診アンテナで得られた電波の強さ比としてデシベル（ｄＢ）として指向性図で示す。 Here, the directivity of the antenna indicates the relationship between the radiation direction of radio waves and the radiation intensity, and changes depending on the shape of the antenna and the frequency band used. Usually, as the relationship between the radiation angle and the radiation intensity, for example, if the directivity of the transmitting antenna is used, the direction of the transmitting antenna is changed up and down, left and right, and the decibel (dB) ) As a directivity diagram.
電波の輻射は空間的であるため、通常は３次元的な輻射での指向性を示す。しかしながら、例えば、ダイポールアンテナのように特定の面に対して３６０°均等に電波が輻射される場合を無指向性とする場合もあり、また、ＩＣタグでは、受信した電波エネルギーを使って送信するためアンテナの指向性を輻射強度として示すと実際の通信可能な距離と整合しない場合があり現実的ではなく、また、電波の偏波面が影響するという問題もある。 Since the radiation of radio waves is spatial, it usually shows directivity with three-dimensional radiation. However, for example, a case where radio waves are radiated at an angle of 360 ° with respect to a specific surface, such as a dipole antenna, may be non-directional, and an IC tag transmits using received radio wave energy. Therefore, when the directivity of the antenna is shown as radiation intensity, it may not match the actual communicable distance, which is not practical, and there is also a problem that the polarization plane of the radio wave affects.
これらのことから、「指向性がある」とは、「アンテナからの発生電波を、電波の輻射強度と電波の方向をベクトルで表現し、電波の発生源をベクトルの始点としたとき、ベクトルの終点で形成される曲面が、球とならないこと」である。 For these reasons, “directivity” means that “the radio wave generated from the antenna is expressed as a vector with the radiation intensity and direction of the radio wave as a vector, and the source of the radio wave is the starting point of the vector. The curved surface formed at the end point should not be a sphere ”.
また、ＩＣタグを接続した状態でのＩＣタグと外部読書装置との最大読取通信距離を指標として、「指向性のあるアンテナ」を定義すると、「３次元空間において外部読書装置との最大読取通信距離が均一とならないＩＣタグアンテナであり、本願発明では、最大読取通信距離が最も短い場合と、最も長い場合との比が２倍以上あるＩＣタグアンテナ」である。 In addition, when the “directional antenna” is defined using the maximum reading communication distance between the IC tag and the external reading device with the IC tag connected as an index, the “maximum reading communication with the external reading device in the three-dimensional space” is defined. This is an IC tag antenna whose distance is not uniform, and in the present invention, it is an “IC tag antenna whose ratio between the shortest read communication distance and the longest read communication distance is twice or more”.
さらに、指向性の主方向とは、最大読取通信距離が最も長い方向をいう。 Furthermore, the main direction of directivity refers to the direction with the longest reading communication distance.
本発明は、ＩＣタグに内臓するアンテナが特定の方向に指向性を有するために、前記アンテナの指向性が、全体として無指向の球体状とならないものを採用した。 In the present invention, since the antenna built in the IC tag has directivity in a specific direction, the antenna has a directivity that does not become a non-directional sphere as a whole.
アンテナの指向性の主方向が、楕円球の軸方向となるように設置する。アンテナそのもの又はその指向性の主方向の延長線が、楕円球の中心を通るように配置し、楕円球のＩＣタグ被覆材で被覆した。 It is installed so that the main direction of the antenna directivity is the axial direction of the elliptic sphere. The antenna itself or an extension line in the main direction of the directivity is arranged so as to pass through the center of the elliptical sphere, and is covered with the elliptical IC tag coating material.
前記楕円球の短軸／長軸比が、０．５から１．０である（短軸／長軸比が１．０のときは、球となる。）。ＩＣタグを、中心を通り、軸を含む平面で２分割したとき、一方の半楕円球が他方の半楕円球と比重差を設けることもできる。そして、全体として、球形あるいは楕円球形状とする。これにより、流動性を有するセメント組成物中で容易に上下方向の比重差によって、ＩＣタグが特定方向を向き、アンテナの指向性の主方向が短軸方向に向き易くなる。短軸／長軸比が、０．５から１．０の範囲にないと、重心の位置を楕円球の中心からずらしても、楕円球体が、振動により一定に配向することが難しくなる。こうして、特にコンクリート締め固めの振動によって、ＩＣタグ自体が回転しやすくなる。 The elliptical sphere has a minor axis / major axis ratio of 0.5 to 1.0 (when the minor axis / major axis ratio is 1.0, it becomes a sphere). When the IC tag is divided into two by a plane passing through the center and including the axis, one semi-elliptical sphere may have a specific gravity difference from the other semi-elliptical sphere. The overall shape is spherical or elliptical. This makes it easy for the IC tag to face the specific direction and the main direction of the antenna directivity to the short axis direction due to the specific gravity difference in the vertical direction easily in the cement composition having fluidity. If the minor axis / major axis ratio is not in the range of 0.5 to 1.0, it becomes difficult for the elliptical sphere to be oriented uniformly by vibration even if the position of the center of gravity is shifted from the center of the elliptical sphere. In this way, the IC tag itself is easily rotated by the vibration of the concrete compaction.
被覆材の材質としては、樹脂あるいはセメント混練物。下層部にはステンレスなどの比重の大きい金属、アルミナやジルコニアなどのセラミックスを半楕円球形状に成型し、上部層に樹脂あるいはセメント混練物を用いてもよい。また、下層部には、粒子径０．１ｍｍ以上の例えば、鉛粒、ステンレス粒などの金属粒、アルミナ粒、ジルコニア粒、などのセラミックス粒を、予め成型する型に入れ、あるいは、比較的流動性のある上層部材料に混ぜて、その自重によって下層部に集まることを利用して、上下層で比重差を持たせたＩＣタグとしてもよい。 The material of the covering material is resin or cement kneaded material. A metal having a large specific gravity such as stainless steel or a ceramic such as alumina or zirconia may be formed into a semi-elliptical sphere shape in the lower layer portion, and a resin or cement kneaded material may be used in the upper layer. Further, in the lower layer portion, for example, metal particles such as lead particles and stainless particles, ceramic particles such as alumina particles and zirconia particles having a particle diameter of 0.1 mm or more are put in a mold to be molded in advance, or are relatively fluid. An IC tag having a specific gravity difference between the upper and lower layers may be obtained by utilizing the fact that it is mixed with the upper layer material having the property and gathered in the lower layer by its own weight.
上下層部に用いる材料の比重をコントロールする方法として、樹脂あるいはセメント混練物中に比重の異なる骨材を混合することによって比重を調整して、上層部と下層部とすることもできる。特にセメント混練物は、セメント組成物との密着性に優れるので有効な材質である。樹脂はエポキシ樹脂、アクリル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、ポリスチレン樹脂など一般的なものを用いることができる。 As a method for controlling the specific gravity of the material used for the upper and lower layer portions, the specific gravity can be adjusted by mixing aggregates having different specific gravities in a resin or cement kneaded material to obtain an upper layer portion and a lower layer portion. In particular, the cement kneaded material is an effective material because it has excellent adhesion to the cement composition. As the resin, a general resin such as an epoxy resin, an acrylic resin, a polyethylene resin, a polypropylene resin, or a polystyrene resin can be used.
骨材は、粒子径０．１ｍｍ〜５ｍｍが望ましい。軽量骨材（比重２．０以下であり、膨張頁岩等を原料としてこれを人工的に焼成・発泡して得られる人工軽量骨材、あるいは、軽石や火山噴出物などの天然軽量骨材）、重量骨材（比重２．５以上、望ましくは比重２．８以上の天然に産出する鉄鉱石やその他岩石等を粉砕した天然重量骨材、鉄分を多く含むダストやスラグ等を溶融して製造した人工重量骨材、アルミナなど成型焼成したセラミックス骨材）、その他、鉄粉、ステンレス粉、硫酸バリウム、タングステン粉、鉛粉や鉛粒を用いることができる。骨材が金属質の場合は、ＩＣタグの通信距離を低下させることがあるので、影響が少なくなるようＩＣタグアンテナを金属質から数ｍｍ以上、離して設置することが望ましい。 The aggregate preferably has a particle diameter of 0.1 mm to 5 mm. Lightweight aggregate (specific gravity 2.0 or less, artificial lightweight aggregate obtained by artificially firing and foaming expanded shale etc. as raw material, or natural lightweight aggregate such as pumice and volcanic ejecta), Heavy aggregate (specific gravity of 2.5 or higher, desirably 2.8 or higher, naturally produced iron ore or other natural heavy aggregates crushed from rocks, etc., manufactured by melting dust or slag containing a lot of iron) Artificial weight aggregate, ceramic aggregate molded and fired such as alumina), iron powder, stainless steel powder, barium sulfate, tungsten powder, lead powder and lead particles can be used. When the aggregate is metallic, the communication distance of the IC tag may be reduced. Therefore, it is desirable to install the IC tag antenna several millimeters or more away from the metallic so as to reduce the influence.
また、セメント混練物に粒状の発砲スチロール、泡モルタルなどの気泡を含有させて比重を調整してもよい。
また、本被覆材によって、本願発明を、楕円半球に比重差をつけて製造するには、アンテナを備えたＩＣタグ基板を、任意の方向に設置し、前記骨材を用いて比重差を設けた材料２種以上で成型。あるいは、セメント混練物の場合は、重量骨材、セメント、水、減水剤を含むセメント混練物において、流動性を高め、重量骨材が沈降することを利用し、比重差を調整してもよい。この場合、増粘材を添加して、重量骨材の沈降を制御するとよい。
Further, the specific gravity may be adjusted by adding bubbles such as granular foamed polystyrene and foam mortar to the cement kneaded product.
In addition, in order to manufacture the present invention with the specific gravity difference of the elliptical hemisphere by the present covering material, an IC tag substrate provided with an antenna is installed in an arbitrary direction, and the specific gravity difference is provided using the aggregate. Molded with 2 or more types of materials. Alternatively, in the case of a cement kneaded product, in the cement kneaded product containing heavy aggregate, cement, water, and a water reducing agent, the fluidity may be increased and the specific gravity difference may be adjusted by utilizing the fact that the heavy aggregate settles. . In this case, a thickener may be added to control the sedimentation of the heavy aggregate.
こうして、得られた本願発明品の上層部となる部分の比重２．１以下、下層部となる部分は比重２．１を越えることが好ましい。また、両層部の比重差は０．２以上、より望ましくは、０．６以上であることが好ましい。 Thus, it is preferable that the specific gravity of the portion which becomes the upper layer portion of the product of the present invention obtained is 2.1 or less and the portion which becomes the lower layer portion exceeds the specific gravity 2.1. Further, the specific gravity difference between the two layer portions is preferably 0.2 or more, more preferably 0.6 or more.
以上のように、本発明によれば、セメント組成物の硬化前、あるいは硬化後に外部読書装置から読取りやすくする。 As described above, according to the present invention, it is easy to read from an external reading device before or after the cement composition is cured.
以下、本発明の実施の形態を具体的に説明する。
本発明は、特定の方向に指向性を有するＩＣタグアンテナとして、基板上で折り返して形成した１／２波長で共振し、指向性の主方向がアンテナ長手方向に対して直角方向にドーナツ状であるもの用い、比重が上下部で異なるＩＣタグ被覆材として、セメント混練物および樹脂を用いた。
Hereinafter, embodiments of the present invention will be specifically described.
The present invention is an IC tag antenna having directivity in a specific direction, resonates at a half wavelength formed by folding on a substrate, and the main direction of directivity is a donut shape perpendicular to the longitudinal direction of the antenna. A certain thing was used, and cement kneaded material and resin were used as IC tag coating | covering material from which specific gravity differs in an up-and-down part.
上層部および下層部を合わせた形態は、球形あるいは楕円球形状とした。図１に、本願発明の外観を示す模式図を示した。図中、ａが、楕円の長径（長軸）、ｂが、短径（短軸）の長さである。流動性を有するセメント組成物中で、上下方向比重差によって、ＩＣタグが特定方向を向く。長径と短径の比率は０．５から１とした。この比率の範囲では、特にコンクリート締め固めの振動によって、タグ自体が回転しやすくなった。 The combined shape of the upper layer portion and the lower layer portion was spherical or elliptical. In FIG. 1, the schematic diagram which shows the external appearance of this invention is shown. In the figure, a is the major axis (major axis) of the ellipse, and b is the length of the minor axis (minor axis). In the cement composition having fluidity, the IC tag faces a specific direction due to the specific gravity difference in the vertical direction. The ratio of the major axis to the minor axis was 0.5 to 1. Within this ratio range, the tag itself was easy to rotate, especially due to the vibration of the concrete compaction.
ＩＣタグ被覆材の材質
表−１に、上層部となる部分の比重２．１以下の材質として、発泡ガラスビーズ、天然シラスバルーン、フライアッシュバルーン、エポキシ樹脂を選定し、下層部となる部分で、比重２．１を越える材質の材料として、ジルコニアビーズ、アルミナビーズ、珪砂、アルミナ粉末を骨材とした例を示した。
In the material of IC tag covering material Table 1, foam glass beads, natural shirasu balloons, fly ash balloons and epoxy resins are selected as materials with a specific gravity of 2.1 or less of the upper layer part. An example in which zirconia beads, alumina beads, silica sand, and alumina powder were used as the aggregate material having a specific gravity of 2.1 was shown.
上下層部に用いる材料の比重をコントロールするために、樹脂あるいはセメント混練物中に比重の異なる骨材を混合することによって比重を調整して、上層部と下層部とした。 In order to control the specific gravity of the material used for the upper and lower layer portions, the specific gravity was adjusted by mixing aggregates having different specific gravities in the resin or cement kneaded material to obtain an upper layer portion and a lower layer portion.
各骨材の粒子径、セメント１００重量部に対する骨材量（重量部）、水量（重量部）、高性能減水剤量（重量部）、比重（硬化後の成形体の比重）を示した。 The particle size of each aggregate, the amount of aggregate (parts by weight), the amount of water (parts by weight), the amount of high-performance water reducing agent (parts by weight), and the specific gravity (specific gravity of the molded product after curing) were shown.
ＩＣタグ内に設置するＩＣタグＬＳＩおよびＩＣタグアンテナは予め接続し、ＩＣタグＬＳＩは９５０ＭＨｚ帯を使用した。ＩＣタグアンテナは、アンテナの直角方向に指向性を有するもので、アンテナの延長線上には極めて電波が飛びにくく、外部読書装置での通信が困難である。アンテナの具体的形状は、図３に示した。図３は、ＩＣタグアンテナの指向性の主方向を楕円球の長軸方向に一致させたＩＣタグを示した。 The IC tag LSI and IC tag antenna installed in the IC tag were connected in advance, and the IC tag LSI used the 950 MHz band. The IC tag antenna has directivity in the direction perpendicular to the antenna, and it is difficult for radio waves to fly on the extended line of the antenna, making it difficult to communicate with an external reading device. The specific shape of the antenna is shown in FIG. FIG. 3 shows an IC tag in which the main direction of directivity of the IC tag antenna is matched with the major axis direction of the elliptic sphere.
ＩＣタグＬＳＩとＩＣタグアンテナは、上層部および下層部の形成時に破損を防ぐため、予め、シリコーン樹脂で薄く被覆した。 The IC tag LSI and the IC tag antenna were previously thinly coated with a silicone resin in order to prevent damage when forming the upper layer portion and the lower layer portion.
表−１に、上層部および下層部に用いた材料示す。表−１に示す配合で上層部および下層部を製造し、ＩＣタグＬＳＩおよびＩＣタグアンテナを鉛直方向に埋設した。本実施例では、セメント組成物としてのコンクリートの壁面からの読取りを目的としたため、鉛直方向に設置したが、コンクリートスラブ等では、鉛直方向から読取りやすくするため、ＩＣタグＬＳＩおよびＩＣタグアンテナは水平方向に埋設した（図２）。 Table 1 shows materials used for the upper layer portion and the lower layer portion. The upper layer portion and the lower layer portion were manufactured according to the formulation shown in Table 1, and the IC tag LSI and the IC tag antenna were embedded in the vertical direction. In this embodiment, the purpose is to read from the wall surface of the concrete as the cement composition, so that it was installed in the vertical direction. Embedded in the direction (Fig. 2).
製造には直径４ｃｍの球状の氷を造るための樹脂製の製氷皿を用いた。ＩＣタグ番号Ｉ〜Ｘまでは、予め接続およびシリコーン被覆したＩＣタグＬＳＩおよびＩＣタグアンテナ（全長約３５ｍｍ）の垂直方向にセットし、まず、表−１の比重の異なる下層部のセメント混練物を半量流し込み、およそ２時間後に比重の異なる下層部を流し込み、硬化後に脱枠して球状のＩＣタグを製造した。 For production, a resin ice tray for making spherical ice with a diameter of 4 cm was used. IC tag numbers I to X are set in the vertical direction of the IC tag LSI and IC tag antenna (total length: about 35 mm) that are pre-connected and silicone-coated. Half the amount was poured, and after about 2 hours, the lower layer portion having a different specific gravity was poured, and after curing, the frame was removed to produce a spherical IC tag.
ＩＣタグ番号ＸＩおよびＸＩＩは、全容積の３分の１の容積のアルミナまたはステンレスボールを製氷皿に入れ、次いで上層部のみを流し込んで成型。この時、ボール間に上層部材料が入るように振動を与えた。ＩＣタグ番号ＸＩＩＩは、直径４ｃｍの球の１／３の大きさで、中心部にＩＣタグアンテナを挿し込めるようにして成型、焼結したセラミックスを用い、ＩＣタグＬＳＩおよびＩＣタグアンテナをセットした後に、同様に製氷皿を用いて上層部を流し込んで製造した。 IC tag numbers XI and XII are molded by placing alumina or stainless steel balls of one-third of the total volume in an ice tray and then pouring only the upper layer. At this time, vibration was applied so that the upper layer material could enter between the balls. IC tag number XIII is 1/3 the size of a sphere with a diameter of 4 cm, and the IC tag LSI and IC tag antenna were set using ceramics molded and sintered so that the IC tag antenna could be inserted into the center. Later, similarly, the upper layer part was poured using an ice tray.
このように製造したＩＣタグをそれぞれ５個用い、予め練混ぜたスランプ８ｃｍ、配合設計強度２４Ｎ／ｍｍ２の普通コンクリート約５リットルにスコップで練りこみ、コンクリートφ１５ｃｍ高さ３０ｃｍの円柱試験体に成型した。成型時には棒状バイブレータを用いて３層に分けて打設し、さらに、コンクリート用型枠振動機でおよそ３分間、振動を与えた。コンクリート硬化後に１週間養生し、コンクリート試験体の側面から、外部読書装置を用い、読取れるＩＣタグの数を数えた。結果は表―２に併せて示した。表―２には、製造したＩＣタグと、コンクリート埋設での読取率を記載した。 Each of the five IC tags manufactured in this way is used, and it is kneaded into approximately 5 liters of normal concrete with a slump of 8 cm and a blended design strength of 24 N / mm 2 by using a scoop and molded into a cylindrical test specimen with a concrete φ15 cm height of 30 cm. did. At the time of molding, it was placed in three layers using a rod-like vibrator, and was further subjected to vibration for about 3 minutes by a concrete form vibrator. After the concrete was cured, it was cured for one week, and the number of IC tags that could be read was counted from the side of the concrete specimen using an external reading device. The results are shown in Table-2. Table 2 shows the manufactured IC tag and the reading rate in concrete burial.
実施例では、何れも５個のＩＣタグ中、４個以上、読取れたのに対し、比較例では、２〜３個であった。 In the example, four or more of the five IC tags could be read, whereas in the comparative example, it was two to three.
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| JP2013205937A (en) * | 2012-03-27 | 2013-10-07 | Sumitomo Osaka Cement Co Ltd | Concrete embedded ic tag, and concrete hardened body in which concrete embedded ic tag is embedded |
| WO2014097651A1 (en) * | 2012-12-18 | 2014-06-26 | 三智商事株式会社 | Construction work image data recording system and structure-embedded data recording unit |
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| JP2000291200A (en) * | 1999-04-01 | 2000-10-17 | Kobayashi Kirokushi Co Ltd | Construction material, construction, and method of reading and writing data to be recorded in construction material or construction |
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| WO2014097651A1 (en) * | 2012-12-18 | 2014-06-26 | 三智商事株式会社 | Construction work image data recording system and structure-embedded data recording unit |
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