Proximity and contact sensor and sensor element

A proximity sensor (10) is provided with a sensor element (11) and a detection circuit (16). The sensor element is provided with a base material (13) wherein coil-like carbon fiber (12) is dispersed. A high frequency oscillation circuit (19) of the detection circuit (16) supplies the sensor element...

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Bibliographic Details
Main Authors YANG SHAOMING, KAWABE KENJI, MOTOJIMA SEIJI, TAKAKI MAKOTO
Format Patent
LanguageChinese
English
Published 17.08.2011
Subjects
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
DETECTING MASSES OR OBJECTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
PULSE TECHNIQUE
RELAYS
SELECTORS
TESTING
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Summary:A proximity sensor (10) is provided with a sensor element (11) and a detection circuit (16). The sensor element is provided with a base material (13) wherein coil-like carbon fiber (12) is dispersed. A high frequency oscillation circuit (19) of the detection circuit (16) supplies the sensor element with a high frequency signal. A detector (22) in the detection circuit (16) receives an output signal from the sensor element (11) and detects proximity of an object (24). In one example, the coil-like fiber is contained in the base material by 1-20 mass%. In another example, a high frequency oscillation circuit generates a high frequency signal of 100-800kHz.
Bibliography:Application Number: CN2007803391