首页>
外国专利>
High Accuracy and High Stability Magnetic Displacement Sensor in the Presence of Electromagnetic Interferences
High Accuracy and High Stability Magnetic Displacement Sensor in the Presence of Electromagnetic Interferences
展开▼
机译：电磁干扰存在下高精度和高稳定性磁性位移传感器
展开▼
页面导航
摘要
著录项
相似文献
摘要
An accurate and stable displacement sensor that reads through coated metal substrates achieves better than one micron accuracy includes: an electromagnetic coil positioned in a first enclosure; (ii) means for generating a magnetic field from the electromagnetic coil; (iii) a second enclosure which is spaced apart from the first enclosure, wherein the second enclosure includes dual magnetic sensors, such as fluxgate sensors, that are configured to measure the magnetic field; and (iv) means for calculating the separation between the operative surfaces of the enclosures from magnetic field measurements. A permanent magnet can be used instead of the electromagnetic coil and associated driving energy source. A precise displacement measurement is given by a mathematical function (such as the ratio or difference) of the two magnetic sensors demodulated signals. The displacement sensor can be mounted on a maneuverable C-frame to monitor the caliper of anodes and cathodes produced for lithium ion batteries.
展开▼
