Presence detection sensor for a motor vehicle
AssigneeVitesco Technologies GmbH
InventorXavier Hourné
Life of this patent
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Abstract
Disclosed is a detection sensor for detecting the presence of an item of user equipment through near-field communication for a motor vehicle, the sensor including an antenna, an impedance matcher, a driver module for driving the antenna and a microcontroller, which is configured to control the driver module, the impedance matcher being able to match the output impedance of the driver module to the impedance of the antenna while amplifying the power supplied by the driver module. The sensor includes a resistive module, mounted between the driver module and the impedance matcher, configured to stabilize the value of the input power of the impedance matcher.
Claims20
A detection sensor to detect a presence of an item of user equipment through near-field communication, said detection sensor being configured to be mounted in a motor vehicle, the detection sensor comprising:
- an antenna;
- a driver module configured to drive the antenna;
- an impedance matcher configured to match the output impedance of the driver module to the impedance of the antenna and configured to amplify the voltage and the current supplied by the driver module;
- a resistive module mounted between the driver module and the impedance matcher, the resistive module comprising at least one resistor configured to stabilize the value of the input power of the impedance matcher;
- and
- a microcontroller configured to control the driver module.
Dependencies are inferred from the claim text.