发明名称 |
Method for forming a magnetic sensor that uses a Lorentz force and a piezoelectric effect |
摘要 |
A method and apparatus for sensing a presence of a magnetic field and/or a magnitude of a magnetic flux density of the magnetic field. A direct-current voltage is applied across a first layer of a conductive material, so that a direct current flows in a first direction through the first layer. A second layer of a piezoelectric material is integrated with or positioned adjacent or abutting the first layer. The first layer and the second layer are exposed to or positioned within a magnetic field. A Lorentz force is thus caused, preferably in a direction which is generally perpendicular to the first direction of the direct current and a second direction of the magnetic field to deflect the piezoelectric material thereby causing an output voltage in response to the Lorentz force. A magnetic flux density can be calculated as a function of the piezoelectric output.
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申请公布号 |
US6975109(B2) |
申请公布日期 |
2005.12.13 |
申请号 |
US20020207299 |
申请日期 |
2002.07.29 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
CHEN BO SU |
分类号 |
G01R33/02;(IPC1-7):G01R33/02 |
主分类号 |
G01R33/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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