| 摘要 |
The invention concerns a device for detecting a capacitance variation of a variable capacitive structure (Cx), comprising: means for generating voltage pulses, means for charging the variable capacitive structure (Cx) from said voltage pulses, means for discharging said capacitive structure (Cx) to a reference capacity (Cs), means for detecting a voltage threshold at the terminals of the reference capacity (Cs), means for determining a number of charges and/or discharges of said variable capacitive structure (Cx) corresponding to said voltage threshold, and means for detecting a variation of said number of charges and/or discharges relative to a number of charges and/or discharges previously obtained. The invention is applicable in any technical field involving user detection, for example in a vehicle door handle inside a vehicle or a housing.
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