Title:
The electrostatic capacity sensor which detects movement of a subject
Document Type and Number:
Japanese Patent JP6250653
Kind Code:
B2
Abstract:
A capacitive sensor for detecting the movement of an object, such as actuation of a key of an operating unit, includes first and second electrodes that are provided for connection or mechanical coupling to or arrangement on the object, the distance of which second electrode from the first electrode changes when the object moves. The electrodes form a first capacitor with a volume between the electrodes, the size of which changes when the object moves. An evaluation unit determines a change of capacitance between the two electrodes resulting from a change of their spacing and volume. A deformable, non-gaseous first dielectric is arranged between the electrodes and defines at least one gas volume that is filled by a gaseous second dielectric that can escape from the gas volume when the two electrodes approach one another.
Inventors:
Marcus, Karsten
Steinkamp, Michael
Schulter, Dirk
Steinkamp, Michael
Schulter, Dirk
Application Number:
JP2015517681A
Publication Date:
December 20, 2017
Filing Date:
June 12, 2013
Export Citation:
Assignee:
Behr-Heller Thermo Control Game Behr
International Classes:
H03K17/955; G01D5/241; H01H13/00; H01H21/00
Domestic Patent References:
| JP2010223953A | ||||
| JP2010043880A | ||||
| JP6201491A | ||||
| JP2011528791A | ||||
| JP2005315831A | ||||
| JP7049244A | ||||
| JP7151504A | ||||
| JP2004520589A | ||||
| JP4096212A |
Foreign References:
| US20090273483 | ||||
| WO2003036247A1 | ||||
| US5416424 |
Attorney, Agent or Firm:
Hanabusa Patent and Trademark Office