JP2000292388A - Method and device of searching water within asphalt surface layer - Google Patents
Method and device of searching water within asphalt surface layerInfo
- Publication number
- JP2000292388A JP2000292388A JP11096099A JP9609999A JP2000292388A JP 2000292388 A JP2000292388 A JP 2000292388A JP 11096099 A JP11096099 A JP 11096099A JP 9609999 A JP9609999 A JP 9609999A JP 2000292388 A JP2000292388 A JP 2000292388A
- Authority
- JP
- Japan
- Prior art keywords
- water
- asphalt
- surface layer
- asphalt surface
- temperature
- 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
Landscapes
- Road Repair (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アスファルト表面
遮水壁ダム等でのアスファルトの表面層の内部または道
路等のアスファルト舗装の内部、その他アスファルトを
使用した表面層内部に水があるか否かの検知を行う水探
知方法および装置に関するものである。The present invention relates to a method for determining whether or not water is present in an asphalt surface layer at an asphalt surface impermeable wall dam, asphalt pavement such as a road, and other asphalt surface layers. TECHNICAL FIELD The present invention relates to a water detection method and apparatus for detecting water.
【０００２】[0002]
【従来の技術】アスファルト・フェーシング工法は、強
い浸蝕作用、大きな水圧、浸透作用などに耐えられるよ
うに設計された比較的厚いアスファルト・コンクリート
層からなる表面遮水壁を構築する工法で、主としてフィ
ルダム、大規模貯水池（調整池）、堤防等が対象とな
る。2. Description of the Related Art The asphalt facing method is a method of constructing a surface impermeable wall composed of a relatively thick asphalt concrete layer designed to withstand strong erosion, large water pressure, seepage, etc. , Large-scale reservoirs (regulation ponds), embankments, etc.
【０００３】このようなアスファルト表面遮水壁ダムの
表面保護層には、アスファルトとフィラー及び添加物な
どとの混合物であるアスファルトマスチックが施される
が、舗装の上に形成する数ミリ程度の保護層であり、こ
の表面保護層は紫外線や温度変化で経年に劣化し、滅失
等の現象が見られるようになる。[0003] Asphalt mastic, which is a mixture of asphalt, fillers and additives, is applied to the surface protection layer of such an asphalt surface impervious wall dam. This surface protective layer is deteriorated with the passage of time due to ultraviolet rays and temperature changes, and phenomena such as loss are observed.
【０００４】前記劣化状態はすりへり、亀甲状のひびわ
れ等での目視により判断できるものもあるが、表面自体
は劣化症状を示すことなくマスチック内部に水が入り込
んでいる場合など目視により判断できない場合も多い。[0004] The above-mentioned deterioration state can be visually judged by abrasion, a turtle-shaped crack or the like. However, there are also cases where the surface itself cannot be judged visually such as when water enters the inside of the mastic without showing any deterioration symptoms. Many.
【０００５】[0005]
【発明が解決しようとする課題】内部の水の存在はアス
ファルトの遮水機能を損なうばかりではなく、アスファ
ルトコンクリート層に劣化を生じさせるものであり、不
良箇所となるが、従来は、このような外側からの目視が
不可能な場合に非破壊にては内部の水の存在を探知する
すべがなく、怪しげな箇所はすべて剥ぎ取ることを余儀
なくされてきた。The presence of water in the interior not only impairs the water blocking function of the asphalt, but also causes deterioration of the asphalt concrete layer, resulting in a defective portion. Non-destructively, there was no way to detect the presence of water inside when outside viewing was not possible, and all suspicious spots had to be stripped away.
【０００６】本発明の目的は前記従来例の不都合を解消
し、表面層を破壊すること無く水の存在を検知でき、し
かも、連続的な検査が可能で、また、改修が必要な箇所
が具体的に示されるので、無駄な作業を省略できるアス
ファルト表面層内部の水探知方法および装置を提供する
ことにある。An object of the present invention is to eliminate the disadvantages of the prior art, to detect the presence of water without destroying the surface layer, to perform a continuous inspection, and to specify a portion requiring repair. Accordingly, it is an object of the present invention to provide a method and an apparatus for detecting water inside an asphalt surface layer, which can omit useless work.
【０００７】[0007]
【課題を解決するための手段】本発明は前記目的を達成
するため、アスファルト表面層内部の水探知方法として
は、マイクロウェーブ発振機によりアスファルト表面層
内部の水を昇温させて水の無い箇所との間に温度差を生
じさせ、その温度差を赤外線カメラで連続的に監視、記
録することで水の存在を検知することを要旨とするもの
である。According to the present invention, in order to achieve the above object, a method for detecting water in an asphalt surface layer is described below. The point is to detect the presence of water by continuously monitoring and recording the temperature difference with an infrared camera.
【０００８】また、アスファルト表面層内部の水探知装
置としては、第１に、走行車に、アスファルト表面層内
部の水を昇温させるマイクロウェーブ発振機と、昇温さ
せた水と水の無い箇所との間の温度差を連続的に監視、
記録する赤外線カメラを搭載したことを、第２に、マイ
クロウェーブ発振機や赤外線カメラは、走行車に設ける
高さ調整装置により上下動自在に設けることを要旨とす
るものである。Further, as a water detecting device inside the asphalt surface layer, first, a traveling vehicle is provided with a microwave oscillator for raising the temperature of the water inside the asphalt surface layer, and a place where the heated water and water are not present. Continuously monitor the temperature difference between
Secondly, the fact that the infrared camera for recording is mounted is that the microwave oscillator and the infrared camera are vertically movable by a height adjusting device provided on the traveling vehicle.
【０００９】請求項１記載の本発明によれば、アスファ
ルト表面層内部の水はマイクロウェーブ加熱装置である
マイクロウェーブ発振機により外側から非接触で昇温さ
せられ、周囲の水の無い箇所との間に温度差を生じさせ
る。その温度差を非接触で赤外線カメラで連続的に監
視、記録することで水の存在を簡単かつ確実に検知する
ことができる。According to the first aspect of the present invention, the water inside the asphalt surface layer is non-contactly heated from the outside by a microwave oscillator, which is a microwave heating device, so that the water inside the asphalt surface layer is free from surrounding water-free parts. A temperature difference is created between them. By continuously monitoring and recording the temperature difference with an infrared camera in a non-contact manner, the presence of water can be easily and reliably detected.
【００１０】また、改修が必要な箇所が具体的に示され
るので、無駄な作業を省略できる。[0010] Further, since a portion requiring repair is specifically indicated, unnecessary work can be omitted.
【００１１】請求項２記載の本発明によれば、前記請求
項１の作用とほぼ同様であるが、これに加えて走行車に
マイクロウェーブ発振機と赤外線カメラを搭載すること
で、一定の速度でこれらを移動させて、安定した正確な
測定が可能となる。According to the second aspect of the present invention, the operation is substantially the same as that of the first aspect, but in addition to this, by mounting a microwave oscillator and an infrared camera on the traveling vehicle, a constant speed can be achieved. By moving these, stable and accurate measurement becomes possible.
【００１２】請求項３および請求項４記載の本発明によ
れば、マイクロウェーブ発振機や赤外線カメラを高さ調
整装置により上下動自在に設けることで、測定対象に合
わせた位置での加熱および監視が可能となり、正確かつ
確実な検知結果が得られる。また、これにより監視範囲
の調整も行うことができる。According to the third and fourth aspects of the present invention, a microwave oscillator and an infrared camera are provided so as to be vertically movable by a height adjusting device, so that heating and monitoring at a position corresponding to a measurement object are performed. And accurate and reliable detection results can be obtained. This also allows adjustment of the monitoring range.
【００１３】[0013]
【発明の実施の形態】以下、図面について本発明の実施
の形態を詳細に説明する。図１は本発明のアスファルト
の表面層内部の水探知装置の１実施形態を示す側面図、
図２は同上平面図で、先に本発明装置について説明す
る。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a water detection device inside a surface layer of asphalt of the present invention,
FIG. 2 is a plan view of the same, and the device of the present invention will be described first.
【００１４】図中１は駆動車輪２および操向車輪３を有
する台車形式の走行車で、この走行車１の手前部分には
モニター画面等の表示器４やビデオプリンタ等の記録装
置５を設けた操作盤６を設け、中央部には発電機７を設
置し、また、前部には赤外線カメラ８とマイクロ波加熱
装置であるマイクロウェーブ発振機９を設けた。In FIG. 1, reference numeral 1 denotes a truck-type traveling vehicle having a driving wheel 2 and a steering wheel 3. In front of the traveling vehicle 1, an indicator 4 such as a monitor screen and a recording device 5 such as a video printer are provided. A control panel 6 was provided, a generator 7 was provided in the center, and an infrared camera 8 and a microwave oscillator 9 as a microwave heating device were provided in the front.
【００１５】マイクロウェーブ発振機９は走行車１上で
赤外線カメラ８よりも前方に位置するが、アスファルト
等の表面保護層11が走行車１の走行面であるとして、マ
イクロウェーブ発振機９はこの表面保護層11の内部の水
を昇温させるべく、表面保護層11に向けてマイクロ波を
照射する導波管10を有する。Although the microwave oscillator 9 is located on the traveling vehicle 1 ahead of the infrared camera 8, it is assumed that the surface protection layer 11 such as asphalt is the traveling surface of the traveling vehicle 1, and the microwave oscillator 9 In order to raise the temperature of the water inside the surface protection layer 11, a waveguide 10 for irradiating the surface protection layer 11 with microwaves is provided.
【００１６】そして、マイクロウェーブ発振機９は導波
管10の周囲を下面開口のハウジング13で囲繞し、また、
該ハウジング13の下方で表面保護層11との接地部分には
マイクロ波が漏れ出ないように金属製箔や金属製網など
の導電性可撓部材によるスカート状のシールド12を取り
付けた。The microwave oscillator 9 surrounds the periphery of the waveguide 10 with a housing 13 having a lower surface opening.
A skirt-shaped shield 12 made of a conductive flexible member such as a metal foil or a metal net is attached below the housing 13 to a ground portion with the surface protective layer 11 so that microwaves do not leak.
【００１７】さらに、このマイクロウェーブ発振機９は
高さ調整装置14で上下動自在に設ける。この高さ調整装
置14は油圧によるシリンダジャッキ形式のものでもよい
が、油圧制御機構を省略して前記発電機７による電力を
直接使用できるように電動式のものとし、その具体的構
造は、電動モータを駆動源としてネジシャフト式のスラ
イド装置、同様に電動モータ駆動によるスプロケットと
チェーンまたは歯車とラックによるリフト装置、電動モ
ータ駆動のコンプレッサでのエアーシリンダによるリフ
ト装置、ワイヤーとウインチによる昇降装置など種々の
ものが考えられる。また、高さ調整装置14には横移動機
能や水平保持機能を付与してもよい。Further, the microwave oscillator 9 is provided by a height adjusting device 14 so as to be vertically movable. The height adjusting device 14 may be of a hydraulic cylinder jack type, but is of an electric type such that the hydraulic control mechanism is omitted so that the electric power from the generator 7 can be directly used. Various devices such as a screw shaft type slide device using a motor as a drive source, a lift device using a sprocket, a chain or a gear and a rack driven by an electric motor, a lift device using an air cylinder with a compressor driven by an electric motor, and a lifting device using a wire and winch. Things are conceivable. Further, the height adjusting device 14 may be provided with a horizontal movement function or a horizontal holding function.
【００１８】赤外線カメラ８は前記マイクロウェーブ発
振機９で昇温させたアスファルト等の表面保護層11内部
の水と水の無い箇所との間に温度差を連続的に監視する
ものとして使用する。そして赤外線カメラ８は熱線を検
知する熱線感知用の検出素子として非冷却２次元マイク
ロボロメータを内蔵し、微小な温度の差をレンズを通し
ての鮮明な熱画像データとしてとらえ、また、熱画像デ
ータを記録する記録媒体やモニター等を備えるものであ
る。The infrared camera 8 is used as a device for continuously monitoring the temperature difference between water inside the surface protection layer 11 such as asphalt heated by the microwave oscillator 9 and a water-free portion. The infrared camera 8 incorporates an uncooled two-dimensional microbolometer as a detecting element for detecting a heat ray, detects a minute temperature difference as clear thermal image data through a lens, and records the thermal image data. It has a recording medium, a monitor, and the like.
【００１９】なお、記録媒体やモニター等はこれを赤外
線カメラ８に設けずに前記のごとく操作盤６に備えるも
のを使用してもよい。赤外線カメラ８も前記マイクロウ
ェーブ発振機９と同じく高さ調整装置15で上下動自在に
設けた。It should be noted that the recording medium, the monitor, and the like may not be provided in the infrared camera 8 but may be those provided in the operation panel 6 as described above. The infrared camera 8 is also provided with a height adjustment device 15 like the microwave oscillator 9 so as to be vertically movable.
【００２０】次に、前記本発明装置を利用して行う本発
明のアスファルト表面層内部の水探知方法について説明
する。Next, the method for detecting water in the asphalt surface layer of the present invention using the above-described apparatus of the present invention will be described.
【００２１】アスファルトマスチックなどアスファルト
等の表面保護層11の内部の水を検知するには、走行車１
をゆっくりと表面保護層上に走らせながら、マイクロウ
ェーブ発振機９の導波管10でマイクロ波を表面保護層11
へ向けてマイクロ波を照射する。その際、マイクロウェ
ーブ発振機９の位置は高さ調整装置14で調整する。In order to detect water inside the surface protection layer 11 such as asphalt such as asphalt mastic, the traveling vehicle 1
Is slowly run on the surface protection layer, and the microwave is guided by the waveguide 10 of the microwave oscillator 9 to the surface protection layer 11.
Irradiate microwaves toward. At that time, the position of the microwave oscillator 9 is adjusted by the height adjusting device 14.
【００２２】その結果、表面保護層11の内部に水がある
場合はこの水の温度が上昇し、水の無い箇所との間に温
度差を生じさせる。As a result, when there is water inside the surface protective layer 11, the temperature of the water rises, and a temperature difference is generated between the surface and the place without water.
【００２３】赤外線カメラ８があるので、このような温
度差は赤外線カメラ８で撮影して熱画像データとしてモ
ニターである表示器４に写し出し連続的に監視する。該
赤外線カメラ８の上下位置は高さ調整装置14で調整す
る。Since there is an infrared camera 8, such a temperature difference is photographed by the infrared camera 8 and is displayed as thermal image data on the display 4 which is a monitor, and is continuously monitored. The vertical position of the infrared camera 8 is adjusted by a height adjusting device 14.
【００２４】図３に示すように、モニターの映像は、水
部分では温度が急激に上昇し、赤く表示され、一方、ア
スファルト部分ではそれほど温度が上昇しないので、青
く写し出され、これにより水の存在を検知する。また、
このような熱画像データはフロッピディスク等の記録装
置５に記憶して保存できる。As shown in FIG. 3, the image on the monitor is displayed in red as the temperature rises sharply in the water portion, while it is displayed in blue because the temperature does not rise so much in the asphalt portion. Is detected. Also,
Such thermal image data can be stored and stored in a recording device 5 such as a floppy disk.
【００２５】このようにして、マイクロウェーブ発振機
９での加熱、赤外線カメラ８で監視および記録をする作
業を一定速度で走行車１を動かすことでアスファルト等
の表面保護層11に対して広い範囲にかつ迅速に施すこと
ができる。In this manner, the operation of heating with the microwave oscillator 9 and monitoring and recording with the infrared camera 8 is performed at a constant speed by moving the traveling vehicle 1 to cover a wide area of the surface protection layer 11 such as asphalt. And quickly.
【００２６】本発明での水探知の対象となるアスファル
ト表面層は、アスファルト表面遮水壁ダム等でのアスフ
ァルトのマスチック表面保護層を初めとしてアスファル
ト・フェーシング工法での表面保護層とアスファルト遮
水壁の層間あるいはアスファルト遮水壁自体や鋼床版橋
面、寒冷地舗装、歩道などの通路舗装、屋上駐車場、倉
庫、家畜舎、工場、市場等の床舗装などである。The asphalt surface layer to be subjected to water detection in the present invention includes an asphalt mastic surface protection layer at an asphalt surface water barrier dam and the like, and a surface protection layer and an asphalt water barrier wall by an asphalt facing method. Interlayer or asphalt impermeable wall itself, steel deck slab bridge surface, pavement in cold districts, pavement such as sidewalk, roof pavement, warehouse, livestock barn, factory, market, etc.
【００２７】[0027]
【発明の効果】以上述べたように本発明のアスファルト
表面層内部の水探知方法および装置は、表面層を破壊す
ること無く水の存在を検知でき、しかも、連続的な検査
が可能で、また、改修が必要な箇所が具体的に示される
ので、無駄な作業を省略できるものである。As described above, the method and apparatus for detecting water inside an asphalt surface layer according to the present invention can detect the presence of water without destroying the surface layer, and can perform continuous inspection. In addition, since a portion requiring repair is specifically shown, useless work can be omitted.
【図１】本発明のアスファルトの表面層内部の水探知装
置の１実施形態を示す側面図である。FIG. 1 is a side view showing an embodiment of a device for detecting water inside a surface layer of asphalt of the present invention.
【図２】本発明のアスファルトの表面層内部の水探知装
置の１実施形態を示す平面図である。FIG. 2 is a plan view showing one embodiment of a water detection device inside the asphalt surface layer of the present invention.
【図３】モニターの映像を示す説明図である。FIG. 3 is an explanatory diagram showing an image on a monitor.
１…走行車 ２…駆動
車輪 ３…操向車輪 ４…表示
器 ５…記録装置 ６…操作
盤 ７…発電機 ８…赤外
線カメラ ９…マイクロウェーブ発振機 10…導波
管 11…表面保護層 12…シー
ルド 13…ハウジング 14…高さ
調整装置 15…高さ調整装置DESCRIPTION OF SYMBOLS 1 ... Running vehicle 2 ... Drive wheel 3 ... Steering wheel 4 ... Indicator 5 ... Recording device 6 ... Operation panel 7 ... Generator 8 ... Infrared camera 9 ... Microwave oscillator 10 ... Waveguide 11 ... Surface protective layer 12 ... shield 13 ... housing 14 ... height adjustment device 15 ... height adjustment device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 福川 光男 東京都文京区後楽１丁目７番27号 鹿島道 路株式会社内 (72)発明者 重松 和男 東京都文京区後楽１丁目７番27号 鹿島道 路株式会社内 Ｆターム(参考） 2D053 AA31 FA02 2G040 AA05 AB05 AB08 AB12 BA05 BA14 BA24 BB04 CA02 CA12 CA23 DA06 DA12 DA25 EA04 EB02 EC03 GB01 HA02 HA06 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Mitsuo Fukukawa 1-7-27 Koraku, Bunkyo-ku, Tokyo Inside Kashima Road Co., Ltd. (72) Kazuo Shigematsu 1-27-27 Koraku, Bunkyo-ku, Tokyo Kashima Road Co., Ltd. F term (reference) 2D053 AA31 FA02 2G040 AA05 AB05 AB08 AB12 BA05 BA14 BA24 BB04 CA02 CA12 CA23 DA06 DA12 DA25 EA04 EB02 EC03 GB01 HA02 HA06
Claims (4)
ルト表面層内部の水を昇温させて水の無い箇所との間に
温度差を生じさせ、その温度差を赤外線カメラで連続的
に監視、記録することで水の存在を検知することを特徴
としたアスファルト表面層内部の水探知方法。1. A method of raising the temperature of water in an asphalt surface layer by a microwave oscillator to generate a temperature difference between the asphalt surface and an area without water, and continuously monitoring and recording the temperature difference with an infrared camera. A method for detecting water inside an asphalt surface layer, wherein the method detects the presence of water by using a method.
を昇温させるマイクロウェーブ発振機と、昇温させた水
と水の無い箇所との間の温度差を連続的に監視、記録す
る赤外線カメラを搭載したことを特徴とするアスファル
ト表面層内部の水探知装置。2. A traveling vehicle has a microwave oscillator for raising the temperature of water in an asphalt surface layer, and an infrared ray for continuously monitoring and recording a temperature difference between the heated water and a location without water. A water detector inside the asphalt surface layer, which is equipped with a camera.
ける高さ調整装置により上下動自在に設けた請求項２記
載のアスファルト表面層内部の水探知装置。3. The water detecting device inside the asphalt surface layer according to claim 2, wherein the microwave oscillator is vertically movable by a height adjusting device provided on the traveling vehicle.
整装置により上下動自在に設けた請求項２または請求項
３記載のアスファルト表面層内部の水探知装置。4. The device for detecting water in an asphalt surface layer according to claim 2, wherein the infrared camera is vertically movable by a height adjusting device provided on the traveling vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09609999A JP3205806B2 (en) | 1999-04-02 | 1999-04-02 | Method and apparatus for detecting water inside asphalt surface layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09609999A JP3205806B2 (en) | 1999-04-02 | 1999-04-02 | Method and apparatus for detecting water inside asphalt surface layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000292388A true JP2000292388A (en) | 2000-10-20 |
| JP3205806B2 JP3205806B2 (en) | 2001-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09609999A Expired - Fee Related JP3205806B2 (en) | 1999-04-02 | 1999-04-02 | Method and apparatus for detecting water inside asphalt surface layer |
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| Country | Link |
|---|---|
| JP (1) | JP3205806B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516161A (en) * | 2005-11-10 | 2009-04-16 | エアバス フランス | Water detection and localization system in sandwich structures for aircraft |
| WO2010131489A1 (en) * | 2009-05-15 | 2010-11-18 | 株式会社パスコ | Method for detecting damage to a deck of a bridge |
| JP2012177675A (en) * | 2011-02-25 | 2012-09-13 | Guangzhou Sat Infrared Technology Co Ltd | Road surface defect detection system and method |
| CN105544369A (en) * | 2016-01-22 | 2016-05-04 | 安徽工程大学 | Adjustable bituminous pavement microwave heat regeneration test device |
| CN109804232A (en) * | 2016-12-30 | 2019-05-24 | 同济大学 | A kind of asphalt pavement crack development degree detection method based on infrared thermal imagery map analysis |
| JP2020523571A (en) * | 2017-06-07 | 2020-08-06 | サウジ アラビアン オイル カンパニー | Microwave horn antenna-based transducer system for CUI inspection without removing insulation |
| CN111693432A (en) * | 2020-06-04 | 2020-09-22 | 山东大学 | Automatic monitoring system and method for water leakage on surface of structure |
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| CN111676791A (en) * | 2020-05-27 | 2020-09-18 | 江苏集萃道路工程技术与装备研究所有限公司 | Intelligent in-situ microwave heating machine and construction method thereof |
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1999
- 1999-04-02 JP JP09609999A patent/JP3205806B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516161A (en) * | 2005-11-10 | 2009-04-16 | エアバス フランス | Water detection and localization system in sandwich structures for aircraft |
| US8294104B2 (en) | 2005-11-10 | 2012-10-23 | Airbus Operations Sas | System for detecting and locating water in a sandwich-type structure for aircrafts |
| WO2010131489A1 (en) * | 2009-05-15 | 2010-11-18 | 株式会社パスコ | Method for detecting damage to a deck of a bridge |
| US8803977B2 (en) | 2009-05-15 | 2014-08-12 | Pasco Corporation | Method for detecting damage to a deck of a bridge |
| JP2012177675A (en) * | 2011-02-25 | 2012-09-13 | Guangzhou Sat Infrared Technology Co Ltd | Road surface defect detection system and method |
| CN105544369A (en) * | 2016-01-22 | 2016-05-04 | 安徽工程大学 | Adjustable bituminous pavement microwave heat regeneration test device |
| CN109804232A (en) * | 2016-12-30 | 2019-05-24 | 同济大学 | A kind of asphalt pavement crack development degree detection method based on infrared thermal imagery map analysis |
| JP2020523571A (en) * | 2017-06-07 | 2020-08-06 | サウジ アラビアン オイル カンパニー | Microwave horn antenna-based transducer system for CUI inspection without removing insulation |
| CN111693432A (en) * | 2020-06-04 | 2020-09-22 | 山东大学 | Automatic monitoring system and method for water leakage on surface of structure |
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|---|---|
| JP3205806B2 (en) | 2001-09-04 |
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