Timepiece comprising a mechanical oscillator associated with a regulation system

A timepiece, comprising:

• a mechanism,
• a mechanical resonator suitable for oscillating about a neutral position corresponding to the minimal mechanical potential energy state thereof, each oscillation of the mechanical resonator defining an oscillation period and having two successive alternations each between two extreme positions which define an oscillation amplitude of the mechanical resonator, each alternation having a passage of the mechanical resonator via the neutral position thereof at a median time and comprising a first half-alternation between an initial time of said alternation and the median time thereof and a second half-alternation between said median time and an end time of said alternation,
• a maintenance device of the mechanical resonator forming with said mechanical resonator a mechanical oscillator which defines a running speed of said mechanism,
• an electromechanical transducer arranged to be able to convert mechanical power from the mechanical oscillator into electrical power when the mechanical resonator oscillates with an amplitude included in an effective functioning range, said electromechanical transducer being formed by an electromagnetic assembly comprising at least one coil, mounted on a mechanical assembly comprising the mechanical resonator and a support thereof, and at least one magnet mounted on the mechanical assembly, the electromagnetic assembly being arranged so as to be able to supply an induced voltage signal between two output terminals of the electromechanical transducer at least when the mechanical resonator oscillates with an amplitude included in the effective functioning range,
• an electric converter connected to the two output terminals of the electromechanical transducer so as to be able to receive an induced electric current from said electromechanical transducer, said electric converter comprising a primary storage unit arranged to be able to store electrical energy supplied by the electromechanical transducer, said electromechanical transducer and the electric converter forming a braking device of the mechanical resonator together,
• a regulating device regulating a frequency of the mechanical oscillator, said regulating device comprising an auxiliary oscillator and a measuring device arranged to be able to detect a potential time drift of the mechanical oscillator relative to the auxiliary oscillator, the regulating device being arranged to be able to determine whether the time drift measured corresponds to at least one certain gain;
• wherein the regulating device is arranged to be able also to determine whether the time drift measured corresponds to at least one certain loss;
• wherein the braking device is arranged such that, in each oscillation period of the mechanical resonator when the oscillation amplitude thereof is in said effective functioning range, the induced voltage signal exhibits a plurality of first voltage lobes occurring at least mostly in a first half-alternation and suitable for generating in said first half-alternation a first induced current pulse to recharge the primary storage unit after a certain extraction of an electric load therefrom and a plurality of second voltage lobes occurring at least mostly in a second half-alternation and suitable for generating in said second half-alternation a second induced current pulse to recharge the primary storage unit after a certain extraction of an electrical load therefrom;
• wherein the regulating device comprises a load pump arranged to be able to transfer on request a certain electric load from the primary storage unit into a secondary storage unit;
• and
• wherein the regulating device further comprises a logic control circuit which receives as an input a measurement signal supplied by the measuring device and which is arranged to be able to activate the load pump device so that, when the time drift measured corresponds to said at least one certain gain, the logic control circuit transfers a first electric load from the primary storage unit into the secondary storage unit such that recharging of the primary storage unit, following the transfer of the first electric load, is generated mostly by at least one first voltage lobe among said plurality of first voltage lobes, the logic control circuit being further arranged to be able to activate the load pump device so that, when the time drift measured corresponds to said at least one certain loss, the logic control circuit transfers a second electric load from the primary storage unit into the secondary storage unit such that recharging of the primary storage unit, following said transfer of the second electric load, is generated mostly by at least one second voltage lobe among said plurality of second voltage lobes.