• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of determining location and orientation of metallic reinforcing members in reinforced concrete whereby the members are heated inductively, e.g. by a spiral coil lying in a plane parallel to the plane of the reinforced concrete slab, and the heating of the members is detected by thermally sensitive means, such as a camera (e.g. thermovision), film or paper responsive to infrared radiation. The heat pattern represents the pattern of reinforcement.
    公开号:SU936831A3
    申请号:SU802914449
    申请日:1980-04-29
    公开日:1982-06-15
    发明作者:Хиллемайер Бернд
    申请人:Хохтиф Аг Форм. Гебр. Хельфманн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the control of the location of reinforcement in reinforced concrete products.
    There is a known method for the location of reinforcement in reinforced concrete products, including 5 placing the reinforced concrete product in an electromagnetic field and determining the deviation of the arrow of the indicator of the probe used, by which the location and direction of the reinforcement are judged [1J.10 Disadvantage of this known method is that it is accurate and reliable the results are achieved only under the condition that the distance between the reinforcing bars is more than 10-15 cm 15 at a distance j of the reinforcement from the surface of the reinforced concrete product of 3-12 cm.
    The purpose of the Invention is to provide accurate control regardless of the depth 20 of the location of the reinforcement, the number of reinforcement bars and the distance between them.
    The goal is achieved in that according to the method for controlling the location of reinforcement in reinforced concrete products, including 25 placing the reinforced concrete product in an electromagnetic field, after heating the reinforced concrete product, the thermal radiation of the reinforcement is measured,
    In addition, the measurement is carried out by the optoelectronic method.
    Heating is carried out to a temperature exceeding the temperature of concrete by 20-80 ° C.
    In FIG. 1 - cross section of a reinforced concrete product with reinforcement; at the firm. 2 - reinforced concrete product with an 'inductive coil, plan; in FIG. 3 measurement result.
    The method is as follows.
    Using an alternating electromagnetic field, steel reinforcement 1 is heated in a reinforced concrete product 2 in a surface zone 3 limited by an inductive coil. The controlled area is heated using an inductive coil 4, equipped with a manipulator 5, made in the form of a flat Archimedean spiral. The frequency and power of the electromagnetic field are controlled in such a way that sufficient heating is achieved in a short period of time, i.e. a few minutes. Then, the radiation of the heat flux of steel reinforcement in this surface zone is measured by means of thermal imaging, that is, by an optoelectronic device;
    'method. In FIG. Figure 3 shows a raster 6 defined by the proposed method, in which the position of the reinforcement 1 in section 3 is manifested in the form of white lines 7 between black fields 8, which are shaded. Comparison of FIG. 3 from FIG. 2 indicates that the plan of FIG. 2 accurately transmitted in FIG. 3.
    权利要求:
    Claims (2)
    [1]
    393 magnetic fields regulate in such a way that in a short period of time, i.e. a few minutes, sufficient heating is achieved. The radiation of the heat flux of the steel reinforcement in this surface area is then measured by thermal imaging, i.e., by opico-electronic method. FIG. Figure 3 shows a raster 6 defined by the proposed method, in which the position of reinforcement 1 in section 3 appears as white lite 7 between black fields 8, which are shaded. The comparison of FIG. 3 with FIG. 2, indicates that the plan in FIG. 2 is accurately transmitted in FIG. 3. Formula 1, A method for controlling the location of reinforcement in reinforced concrete products, including placing reinforced concrete from 31 depi in an electromagnetic field, which is so that, in order to ensure accurate control, regardless of the depth of reinforcement, the number of reinforcement rods and the distance Between Hvaffi, after heating the reinforced concrete product, the heat radiation of the reinforcement is measured.
    [2]
    2. The method according to claim 1 is different from the fact that the measurement is carried out by an optical-electron method. . H. Method noji.l, characterized in that the heating is carried out to a temperature exceeding the temperature of the concrete OO-8O C. Sources of informatstsin taken into account during the examination 1. R. Johns and others. Disposable test methods for concrete. M., stroiizdat, 1974, p. 248-251,
    U -YY-tG- FIG. 3
    类似技术:
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    SU936831A3|1982-06-15|Method for controlling position of reinforcement bars in reinforced concrete products
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    SU1165971A1|1985-07-07|Device for checking physical and mechanical properties for ferromagnetic material articles
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    SU627309A1|1978-10-05|Article geometrical parameter checking method
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    SU1051417A1|1983-10-30|Process for quality control of article made of ferromagnetic material
    SU669220A1|1979-06-25|Method of measuring the temperature of magneto-optical material
    JPH03183940A|1991-08-09|Infrared flaw detecting device
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    同族专利:
    公开号 | 公开日
    US4309610A|1982-01-05|
    SE446415B|1986-09-08|
    SE8003229L|1980-11-04|
    DE2917796A1|1980-11-13|
    GB2048486B|1983-06-15|
    JPS634159B2|1988-01-27|
    BE883902A|1980-10-16|
    GB2048486A|1980-12-10|
    FR2455750A1|1980-11-28|
    FR2455750B1|1984-06-29|
    DE2917796C2|1981-12-17|
    JPS5616882A|1981-02-18|
    DD151228A5|1981-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2473892C1|2011-09-14|2013-01-27|Александр Сергеевич Колеватов|Method of non-destructive thermal check of reinforcement condition in lengthy reinforced concrete items|
    RU2509300C1|2012-11-06|2014-03-10|Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский Томский политехнический университет"|Method for active single-sided thermal control of hidden defects in solid bodies|US3427861A|1965-07-28|1969-02-18|Automation Ind Inc|Nondestructive tester|
    GB1443452A|1973-06-18|1976-07-21|British Steel Corp|Monitoring of welding|
    US3878453A|1973-09-21|1975-04-15|Trans Canada Pipelines Ltd|Pipeline signalling systems and techniques|
    JPS5816143B2|1975-06-26|1983-03-29|Nippon Steel Corp|
    US4005289A|1976-01-05|1977-01-25|The United States Of America As Represented By The United States Energy Research And Development Administration|Method for identifying anomalous terrestrial heat flows|
    JPS5747423B2|1976-12-09|1982-10-08|
    DE2917355A1|1979-04-28|1980-10-30|Steinmueller Gmbh L & C|Locating different heat conductive regions in combined materials - uses external material heating and IR recording of heat radiation|
    DE2917356C2|1979-04-28|1985-01-10|L. & C. Steinmüller GmbH, 5270 Gummersbach|Method for locating metallic objects, preferably iron reinforcements and anchoring elements in a solidified concrete mass|US4716073A|1986-06-02|1987-12-29|E. I. Du Pont De Nemours And Company|Thin wall high performance insulation on wire|
    CA1268212A|1986-12-29|1990-04-24|Martin Lord|Method and apparatus for measuring magnetic losses in ferromagnetic materials|
    US4866276A|1987-12-29|1989-09-12|The Boeing Company|Method and apparatus for nondestructive analysis of subsurface features of material|
    DE3902995C1|1989-02-02|1990-08-09|Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen, De|Apparatus and process for drying the surface layer of a concrete structure|
    DE4400190C2|1994-01-05|1996-07-11|Bernd Poley|Security gate and method for tracking objects placed in a security gate by people|
    GB9421493D0|1994-10-24|1994-12-07|Marconi Gec Ltd|Imaging method and system|
    FR2752300A1|1996-12-24|1998-02-13|Commissariat Energie Atomique|Buried gas pipe electromagnetic detector|
    DE19747784A1|1997-10-29|1999-05-06|Rothe Lutz Dr Ing Habil|Object identifying using thermal signature analysis and infrared sensor system|
    DE10118131C2|2001-04-11|2003-06-12|Roeder Praez Gmbh|Process for thermographic production, quality and function control of heating conductor tracks embedded in aircraft parts|
    US8994817B2|2011-11-14|2015-03-31|Michelin Recherche Et Technique S.A.|Infrared inspection of metallic web structures|
    US9136676B2|2012-01-26|2015-09-15|Echostar Technologies L.L.C.|Electromagnetic tool for wire routing|
    CN111811426B|2020-06-29|2021-07-30|中国人民解放军军事科学院国防科技创新研究院|Method and device for regulating and controlling micro-electromechanical system structure|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2917796A|DE2917796C2|1979-05-03|1979-05-03|Process and system for the determination of reinforcing bars in a reinforced concrete structure|
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