发明名称 |
Method and system of a sensor interface having dynamic automatic gain control |
摘要 |
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. 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 relative to a signal-to-noise ratio of the scaled attenuated single-ended voltage signal. |
申请公布号 |
US8710825(B2) |
申请公布日期 |
2014.04.29 |
申请号 |
US201113033249 |
申请日期 |
2011.02.23 |
申请人 |
ROYLANCE JAMES MERRILL;ABAWI DANIEL ZAHI;DEB BIPLAB;GENERAL ELECTRIC COMPANY |
发明人 |
ROYLANCE JAMES MERRILL;ABAWI DANIEL ZAHI;DEB BIPLAB |
分类号 |
G01P3/66;G01B7/14;G01B7/30;G01R35/00 |
主分类号 |
G01P3/66 |
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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