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Proximity sensor | Näherungssensor | Capteur de proximité

Patentnummer:EP2261682B1
IPC Hauptklasse:G01D000520
Anmelder:
Erfinder:
Anmeldung:27.10.04
Offenlegung:27.02.04
Patenterteilung:13.12.17

Abstract / Hauptanspruch
A proximity sensor for sensing the proximity of a target comprising: an electrical component for sensing the proximity of the target, said electrical component having electrical properties that vary with the proximity of the target; an impedance component (21) having a known impedance and a first end connected to a first end of said electrical component; a switch (31) connected to switch between said first end of said impedance component (21) and a second end of said impedance component (21); a signal generator connected to said second end of said impedance component (21) for generating an electrical signal for application to the impedance component and electrical component; an analogue-to-digital converter for receiving an electrical signal and for generating a digital signal; and a processor connected to the analogue-to-digital converter for receiving a digital voltage signal and for generating a proximity signal, wherein said processor (23) is adapted to control said switch to switch (31) to connect to said first and second ends of said impedance component sequentially.

EP2261682B1


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