发明名称 |
Method and system of a sensor interface having dynamic automatic gain control |
摘要 |
<p>Embodiments of the invention described herein provide a magnetic sensor interface capable of adjusting signal conditioning dynamically such that the true positive and negative peaks of the input signal are maintained for a given target across its entire speed range (0-Max rpm), therefore increasing the signal to noise ratio at low speeds and avoiding clipping or distortion at high speeds. In one aspect, a method comprises receiving an alternating differential voltage signal from a sensor (102). The alternating differential voltage signal has an amplitude that changes over time. The alternating differential voltage signal is converted to an attenuated single-ended voltage signal that can be dynamically scaled. The attenuated single-ended voltage signal can be scaled by multiplying the attenuated single-ended voltage signal by a scaling factor. The scaling factor is selected to maximize a signal-to-noise ratio of the scaled attenuated single-ended voltage signal.</p> |
申请公布号 |
EP2492695(B1) |
申请公布日期 |
2013.12.04 |
申请号 |
EP20120156301 |
申请日期 |
2012.02.21 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
ROYLANCE, JAMES MERRILL;ABAWI, DANIEL ZAHI;DEB, BIPLAB |
分类号 |
G01P3/46;G01P3/487;G01P3/488 |
主分类号 |
G01P3/46 |
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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