Invention Grant
US08405409B2 Fast response capacitive gauging system featuring steep slope filter discrimination circuit
有权
快速响应电容式测量系统，采用陡坡滤波器鉴别电路
- Patent Title: Fast response capacitive gauging system featuring steep slope filter discrimination circuit
- Patent Title (中): 快速响应电容式测量系统，采用陡坡滤波器鉴别电路
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Application No.: US12887780Application Date: 2010-09-22
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Publication No.: US08405409B2Publication Date: 2013-03-26
- Inventor: Gerald F. Hermann , Daniel R. Buckley , Christopher R. D. Miller , Keith A. Jefferies
- Applicant: Gerald F. Hermann , Daniel R. Buckley , Christopher R. D. Miller , Keith A. Jefferies
- Applicant Address: US MI Novi
- Assignee: Laser Mechanisms, Inc.
- Current Assignee: Laser Mechanisms, Inc.
- Current Assignee Address: US MI Novi
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: G01R27/26
- IPC: G01R27/26
Abstract:
The high speed, high accuracy capacitive gauging system employs an oscillator fed through steep slope filter that is discriminates between very small changes in capacitance even in the presence of electrical noise. During intervals when the probe tip is retracted, the oscillator frequency is calibrated to match the sweet spot in the center of the linear operative region of the steep slope filter. This calibrates the system to overcome the effects of varying temperature and humidity in the manufacturing environment.
Public/Granted literature
- US20110089956A1 Fast Response Capacitive Gauging System Featuring Steep Slope Filter Discrimination Circuit Public/Granted day:2011-04-21
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