| 摘要 |
There is described a portable device ( 1 ) including in particular a case ( 2 ) closed by a glass ( 3 ) and containing device for detecting the presence of water ( 22 ) in contact with an external region of the assembly formed by the case and the glass. In a preferred embodiment, the device for detecting the presence of water include a plurality of capacitive sensors ( 20 ) arranged in a peripheral region of the device ( 1 ) so as to undergo a variation in their respective capacitances when the latter is immersed in water. Thus, a quantity characteristic of the capacitance value of each sensor ( 20 ) is periodically measured and stored. After each measurement, the new value obtained is compared to the preceding one to detect any variation in the corresponding capacitance. When a part of the capacitive sensors ( 20 ) simultaneously see their respective capacitances vary considerably between two measurements, detection of the presence of water is validated.
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