| 摘要 |
The invention proposes a method for supplying power to a device comprising photosensitive means arranged for changing a received luminous energy into electric power, the device being associated with power storage means for storing electric power obtained by the photosensitive means. The method comprises the following steps: detecting a remaining load in the power storage means; and when said remaining load is below a first threshold, commanding a light source to be switched on.
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