US 12,455,184 B1
Method for detecting the presence of a liquid in a container by means of a near-field communication circuit
Guilherme Germano Buchmeier, Toulouse (FR)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
Filed on Apr. 10, 2025, as Appl. No. 19/175,564.
Claims priority of application No. 2404281 (FR), filed on Apr. 25, 2024.
Int. Cl. G01F 23/284 (2006.01); B60N 3/10 (2006.01)
CPC G01F 23/2845 (2013.01) [B60N 3/102 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for detecting the presence of a liquid in a container by a near-field communication (NFC) circuit that comprises at least one coil surrounding said container, said method being designed to adopt a near-field communication mode, in which said NFC circuit can detect the presence of an NFC compatible object arranged in the container, and, if an NFC compatible object is not detected in the container an NFC detection mode for detecting a liquid occurs, the NFC detection mode comprising:
measuring at least one so-called present physical quantity by the coil of the NFC circuit, said present physical quantity being representative of a dielectric permittivity of a medium bounded by the container, and
transmitting at least one of an audible signal and a visual signal indicating detection of a liquid in the container if said present physical quantity crosses a predetermined reference threshold.