Device for measuring a relative humidity level inside the enclosure of a watch case
AssigneeThe Swatch Group Research and Development Ltd
InventorsDominique Dubugnon, Cédric Blatter, Michel Willemin
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Abstract
A device (1) for measuring a relative humidity level inside the enclosure (9) of a case (3) of a watch (2), the device (1) including: an emitter module (5) provided with a source of light radiation capable of emitting light beams (8) towards the enclosure (9) of the case (3); a receiver module (6a, 6b, 6c) for receiving at least one acoustic signal (12) from the enclosure (9), and a control unit (7) connected to the modules (5, 6) and which is configured to evaluate the water vapour content of a gaseous fluid (11) contained inside the enclosure (9) as a function of the at least one acoustic signal (12) received by the receiver module (6a, 6b, 6c).
Claims10
A device for measuring a relative humidity level inside an enclosure of a case of a watch, the device comprising:
- an emitter module provided with a source of light radiation capable of emitting light beams towards the enclosure of said case;
- a receiver module for receiving at least one acoustic signal from said enclosure, and
- a control unit connected to said modules- and which is configured to evaluate a water vapour content of a gaseous fluid contained inside said enclosure as a function of said at least one acoustic signal received by the receiver module.
Dependencies are inferred from the claim text.