OBJECT DETECTION DEVICE FOR AN AUTOMOTIVE VEHICLE

This detection device (2) for detecting an object (3) by measuring the capacitance variation of said detection device (2), comprises at least a pair (4, 6, 8) of sensor pads (10), each sensor pad (10) being able to transmit or to receive an electric field. Each sensor pad (10) can be used to measure...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: W BACH, THOMAS, AUBRY, JEAN-MARCEL
Format: Patent
Sprache:eng ; fre
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:This detection device (2) for detecting an object (3) by measuring the capacitance variation of said detection device (2), comprises at least a pair (4, 6, 8) of sensor pads (10), each sensor pad (10) being able to transmit or to receive an electric field. Each sensor pad (10) can be used to measure the impedance variation of said pad (10), each sensor pad (10) being driven by a driven rail impedance measuring system (18) comprising an inverter (38), an oscillator (56), a power supply rail driver (40) and switches (48, 50, 52), said measuring system (18) being able to change the sensor pad (10) function from electric field transmitter to electric field receiver or impedance measurer by turning on and off the oscillator (56) drive to the input (46) of the power supply rail driver (40) of the inverter (38).