Invention Grant
US08165830B2 Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter
有权
用于确定流量计的第一传感器信号和第二传感器信号之间的相位差的仪表电子装置和方法
- Patent Title: Meter electronics and methods for determining a phase difference between a first sensor signal and a second sensor signal of a flow meter
- Patent Title (中): 用于确定流量计的第一传感器信号和第二传感器信号之间的相位差的仪表电子装置和方法
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Application No.: US12088613Application Date: 2006-10-16
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Publication No.: US08165830B2Publication Date: 2012-04-24
- Inventor: Craig B McAnally , Denis M Henrot
- Applicant: Craig B McAnally , Denis M Henrot
- Applicant Address: US CO Boulder
- Assignee: Micro Motion, Inc.
- Current Assignee: Micro Motion, Inc.
- Current Assignee Address: US CO Boulder
- Agency: The Ollila Law Group LLC
- International Application: PCT/US2006/040232 WO 20061016
- International Announcement: WO2007/047524 WO 20070426
- Main IPC: G01F1/00
- IPC: G01F1/00 ; G06F19/00 ; G06F17/40
Abstract:
Meter electronics (20) for processing sensor signals in a flow meter is provided according to an embodiment of the invention. The meter electronics (20) includes an interface (201) for receiving a first sensor signal and a second sensor signal and a processing system (203) in communication with the interface (201) and configured to receive the first sensor signal and the second sensor signal, generate a ninety degree phase shift from the first sensor signal, and compute a frequency from the first sensor signal and the ninety degree phase shift. The processing system (203) is further configured to generate sine and cosine signals using the frequency, and quadrature demodulate the first sensor signal and the second sensor signal using the sine and cosine signals in order to determine the phase difference.
Public/Granted literature
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