Abstract: A force detection system of an electric cleansing appliance includes a cleansing head and an electric motor. The electric motor includes a stator and a rotor. The stator has an iron core having an accommodating space, a main coil, and an auxiliary coil. The rotor is disposed in the accommodating space and has a rotor body, a magnetic element assembly, and a rotation axis connected to the rotor body. The rotor is connected to the cleansing head through the rotation axis. The magnetic element assembly having two magnetic elements, which are disposed on opposite sides of the rotor body, provides a magnetic force in a magnetic field direction. The main coil is wound on the iron core in a first direction which is perpendicular to the magnetic field direction. The auxiliary coil is a winding structure and disposed adjacent to the main coil.

Abstract: A plant cultivation apparatus includes a box, an illumination module, a thermoelectric cooling chip, a first heat dissipation module, and a second heat dissipation module. The box has a cover and a planting space. The cover has a first space and a second space separated from each other. The first space communicates with a surrounding environment. The second space communicates with the planting space. The illumination module assembled to the cover and located in the first space provides the planting space with light. The thermoelectric cooling chip assembled to the cover has a heating side located in the first space and a cooling side located in the second space. The first heat dissipation module located in the first space is thermally connected to the heating side and the illumination module. The second heat dissipation module located in the second space is thermally connected to the cooling side and the planting space.