Patent ID: 9731627
Date: 2017-08-15
CPC Classifications: B60N,B60R,G01D,G01L,H03K

Claim:
1. Capacitive sensor for a vehicle seat, comprising an antenna electrode for being arranged in said vehicle seat; a control and evaluation circuit operatively connected to said antenna electrode, said control and evaluation circuit comprising at least one measurement circuit, and a seat frame connector for connecting said control and evaluation circuit to a seat frame of said vehicle seat; wherein said control and evaluation circuit is configured to temporarily couple said measurement circuit to the seat frame of the vehicle seat via said seat frame connector, and wherein said control and evaluation circuit is configured to operate in a first mode of operation, during which said control and evaluation circuit is configured to measure an alternating electrical current flowing between said antenna electrode and ground, and in a second mode of operation, during which said control and evaluation circuit is configured to measure an electrical current flowing into said seat frame connector when said measurement circuit is temporarily coupled to the seat frame of the vehicle.