Invention Application
- Patent Title: Circuit Configuration for Inductive Displacement Measurement
- Patent Title (中): 电感位移测量的电路配置
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Application No.: US10575659Application Date: 2004-10-15
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Publication No.: US20070222461A1Publication Date: 2007-09-27
- Inventor: Bernhard Miller
- Applicant: Bernhard Miller
- Priority: DE10348343.8 20031017
- International Application: PCT/EP04/11634 WO 20041015
- Main IPC: G01R27/26
- IPC: G01R27/26

Abstract:
A circuit configuration for inductive displacement measurement using a sensor whose inductance changes as a function of the displacement to be measured, and having an evaluation circuit to which the sensor is connected. The sensor is connected between a first operational amplifier and a series connection of a second operational amplifier and a resistor. The first operational amplifier is switchable over between two specified voltages and the second operational amplifier is operable to adjust a specified constant voltage at the connecting point between the resistor and the sensor, and the output of the second operational amplifier is connected to an input of a comparator whose other input is switchable over between two specified voltages. The output signal of the comparator effecting the switchover of these voltages and the voltages of the first operational amplifier, and is the measuring output signal of the circuit configuration at the same time.
Public/Granted literature
- US07492148B2 Circuit configuration for inductive displacement measurement Public/Granted day:2009-02-17
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