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    • 77. 发明授权
    • Nondestructive testing system using a SQUID
    • 使用SQUID的非破坏性测试系统
    • US5825182A
    • 1998-10-20
    • US325813
    • 1994-10-19
    • Satoshi NakayamaKazuo ChinoneAkikazu OdawaraTatsuaki Ataka
    • Satoshi NakayamaKazuo ChinoneAkikazu OdawaraTatsuaki Ataka
    • G01N27/82G01N27/83G01R33/035G01N27/87
    • G01R33/0358G01N27/82
    • In order to enhance the sensitivity of a nondestructive testing system, a pair of superconducting coils are disposed in the same plane such that a current flowing through the respective coils when exposed to a uniform magnetic field cancels out. As a result of this configuration, the detection coils are immune to noise, offset fields or other uniform ambient phenomena. In one embodiment, the nondestructive testing unit includes a plurality of detection coils, a SQUID having a pair of connectors for connection to the detection coils, a probe for supporting the detection coils and the SQUID in a coolant, a cryostat for supporting the probe and for keeping the coolant constant, a controller for processing a signal transmitted from the SQUID, and a display device for displaying the result of the processing. At least two detection coils are disposed in the same plane, are directly connected to the SQUID and are integrated on a semiconductor substrate.
    • 为了提高无损检测系统的灵敏度,将一对超导线圈设置在同一平面上,使得暴露于均匀磁场时流过各线圈的电流抵消。 作为这种配置的结果,检测线圈不受噪声,偏移场或其他均匀的环境现象的影响。 在一个实施例中,非破坏性测试单元包括多个检测线圈,SQUID具有用于连接到检测线圈的一对连接器,用于支撑检测线圈的探针和冷却剂中的SQUID,用于支撑探针的低温恒温器, 为了保持冷却剂不变,用于处理从SQUID发送的信号的控制器以及用于显示处理结果的显示装置。 至少两个检测线圈被布置在同一平面中,直接连接到SQUID并被集成在半导体衬底上。