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2. 发明公开

EP2990813A4 ELECTRIC NEAR-FIELD PROBE, CONTROL SYSTEM FOR SAME, AND PIEZOELECTRIC CRYSTAL DETECTOR 失效
标题翻译： ELEKTRISCHE NAHFELDSONDE，STEUERUNGSSYSTEMDAFÜRUND PIEZOELEKTRISCHER KRISTALLDETEKTOR
公开(公告)号：EP2990813A4
公开(公告)日：2016-12-28
申请号：EP14785728
申请日：2014-04-03
申请人： UNIV OSAKA
发明人： AKABA HIDEO , ITOZAKI HIDEO , SHINOHARA JUNICHIRO , MIYATO YUJI , KATSUTANI FUMIYA
IPC分类号： G01R29/08 , G01N27/02 , G01N29/24 , G01R29/22 , G01V3/02 , G01V3/08
CPC分类号： G01V3/02 , G01N29/2443 , G01R29/0814 , G01R29/0878 , G01R29/22 , G01V3/088
摘要： Provided is a compact and lightweight electric field probe which has a transmitting/receiving function whereby piezoelectric crystals can be excited through the application of an alternating current electric field thereto, and piezoelectric effect signals can be detected with sufficient sensitivity. Also provided are a control system for the same, and a piezoelectric crystal detector. The electric near-field probe is provided with a capacitor, in which the space between two metal plates that are positioned parallel to each other is filled by a conductor or air, and a series resonance circuit, which has a prescribed resonance frequency and is connected in series to an inverter that is formed by winding a conductive wire around a toroidal core. The electric near-field probe is configured such that: an electric near-field, which originates from the leakage electric field from the capacitor generated by the application of alternating current voltage to the series resonance circuit, is transmitted to the piezoelectric crystals, and the piezoelectric crystals are excited; and the piezoelectric effect signal, which is generated by the excited piezoelectric crystals, is received by the capacitor, and is detected by the series resonance circuit. The control system is for said electric near-field probe.
摘要翻译：本发明提供一种具有发送/接收功能的紧凑且重量轻的电场探针，由此可以通过施加交流电场来激发压电晶体，并且可以以足够的灵敏度检测压电效应信号。还提供了用于其的控制系统和压电晶体检测器。电近场探针设置有电容器，其中彼此平行定位的两个金属板之间的空间由导体或空气填充，并且串联谐振电路具有规定的谐振频率并被连接与通过将导线围绕环形芯线缠绕而形成的逆变器串联连接。电近场探测器被配置为使得从通过对串联谐振电路施加交流电压而产生的电容器的漏电场产生的电近场被传送到压电晶体，并且压电晶体激发; 由激发的压电晶体产生的压电效应信号由电容器接收，并由串联谐振电路检测。控制系统用于所述电近场探头。

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