Smart watch winding device

1. A watch winding device comprising:

at least one energy source, arranged to power at least one motor, arranged either to turn a winding crown of a manually wound watch, or to drive at least one oscillating weight of a self-winding automatic watch, or to rock at least one self-winding automatic watch;

control circuitry which includes first acoustic measuring circuitry which incorporates a sensor for acoustic measurement of an oscillator of at least one watch placed in a winding position, said control circuitry being arranged to analyse signals transmitted by said first acoustic measuring circuitry and to compare said signals to target values which correspond to the watch winding device to regulate an operation of at least one said motor by starting said motor when an operating amplitude of said oscillator is less than or equal to a first, minimum value, and by stopping said motor when the operating amplitude of said oscillator is higher than or equal to a second, maximum value, said first acoustic measuring circuitry arranged in a fixed position in a base behind an entry orifice; and

at least one acoustic duct, which places a receiving port located inside a chamber for housing the watch, in communication with a transmitting port, and wherein said control circuitry controls a drive motor, which determines the motion and position in space of said transmitting port, in order, during a programmed or user-initiated operation to measure the rate of the watch fixed inside said housing, to position and immobilise said transmitting port in an indexing position facing said sensing opening and in immediate proximity to the latter or to the contact thereof.

2. The device according to claim 1 , wherein said device includes second acoustic measuring circuitry for measuring ambient noise in proximity to said device during the measurement, and wherein said control circuitry is arranged to correct, by subtracting said ambient noise, the acoustic measurement made by said first acoustic measuring circuitry during said measuring operation.

3. The device according to claim 1 , wherein said device includes at least one support, which is movable with respect to said base, said at least one support being arranged for receiving the watch in the winding position, wherein each said support includes one said acoustic duct, wherein said transmitting port is located at the periphery of said support, and wherein said control circuitry controls the drive motor which determines the motion and position in space of said support, in order, during a programmed or user-initiated operation to measure the rate of the watch fixed inside said housing, to position and immobilise said transmitting port in the indexing position facing said sensing opening and in immediate proximity to the latter or to the contact thereof.

4. A timepiece assembly comprising a device according to claim 3 , and at least one watch, which is arranged to be fixed on at least one said support.

5. A method for preparing a watch, wherein the following is performed:

said watch is placed on said device according to claim 1 ;

the angular position in which the rate of said watch is most accurate is determined;

the degree of winding, when said watch has a mechanical energy source, at which the rate of the watch is the most stable, is determined;

said watch is held both in said angular position, and in said degree of winding, corresponding to the optimum rate of said watch.