A non-invasive electric current sensor employing a modified shear-mode cymbal transducer
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- 作者：Wei Hea ; weiheky@yeah.net" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae ; Yueran LuaAuthor Vitae ; Chiwen QuaAuthor Vitae ; Jiancai PengbAuthor Vitae
- 关键词：Non-invasive sensor ; Electric power grid ; Shear-mode cymbal transducer ; Halbach array ; Ampere force
- 刊名：Sensors and Actuators A: Physical
- 出版年：2016
- 出版时间：15 April 2016
- 年：2016
- 卷：241
- 期：Complete
- 页码：120-123
- 全文大小：1134 K
文摘
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This paper presents a non-invasive current sensor consisting of a modified shear-mode cymbal transducer and a Halbach array.
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The Halbach array generates concentrated magnetic field on the electric wire, leading to an enhanced magnetic force on the array.
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The magnetic force is further amplified by the cymbal transducer which works in shear mode.
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The sensitivity of the sensor is improved due to the enhancement effect of the magnetic force resulting from the Halbach array and the amplification effect of the cymbal transducer.