Patent DE 10 2013 113 378
Method and electronic circuit for determining the time instant of an extremum of a time-varying capacitance
Method for determining the time instant of an extremum of a time-varying capacitance of a capacitor (01), comprising the following steps:
- comparing a voltage (VCAP) applied to the capacitor (01) with a lower voltage value (VM - ΔV) and an upper voltage value (VM + ΔV);
- Recharging the capacitor (01) to an average voltage value (VM) that lies between the lower voltage value (VM - ΔV) and the upper voltage value (VM + ΔV) if the voltage (VCAP) applied to the capacitor (01) is less than the lower voltage value (VM - ΔV) or greater than the upper voltage value (VM + ΔV);
- Repeat the recharging of the capacitor (01) if the voltage (VCAP) applied to the capacitor (01) is again less than the lower voltage value (VM - ΔV) or again greater than the upper voltage value (VM + ΔV);
- Determining a reference time at which the voltage (VCAP) applied to the capacitor (01) passes through the mean voltage value (VM);
- and determining the time instant of the extremum as a function of the determined reference time.
Patent No.:DE 10 2013 113 378
Inventor:Benjamin Saft. Eric Schäfer
Application:
Front-end circuit for electrostatic energy harvesters| capacitive position detectionResearch field:Integrated sensor systems
granted patent
Application date:03 Dezember 2013
Date of first publication:03 Juni 2015
Date of publication of grant:26 Januar 2017
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Contact
Eric Schäfer, M. Sc.
Head of Microelectronics / Branch Office Erfurt
eric.schaefer(at)imms.de+49 (0) 361 663 25 35
Eric Schäfer and his team research Integrated sensor systems, especially CMOS-based biosensors, ULP sensor systems and AI-based design and test automation. The results are being incorporated into research on the lead applications Sensor systems for in-vitro diagnostics and RFID sensor technology. It will assist you with services for the development of Integrated circuits and with IC design methods.
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Dr.-Ing. Ludwig Herzog
Head of Mechatronics
ludwig.herzog(at)imms.de+49 (0) 3677 874 93 60
Dr. Ludwig Herzog will provide detail on our research on magnetic 6D direct drives with nm precision for the nm measurement and structuring of objects. He supports you with services for the development of mechatronic systems, for simulation, design and test of MEMS as well as for finite element modelling (FEM) and simulation.
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Integrated sensor systems
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