Abstract: A sensor used by a smart magic cube is disclosed. The sensor includes: a stator configured to be fixedly disposed on the smart magic cube; a first rotor rotatable in synchronization with a first magic cube layer of the smart magic cube, such that when the first rotor rotates with the first magic cube layer with respect to the stator, the stator or the first rotor outputs a rotation signal of the first magic cube layer; and a second rotor rotatable in synchronization with a second magic cube layer of the smart magic cube, such that when the second rotor rotates with the second magic cube layer with respect to the stator, the stator or the second rotor outputs a rotation signal of the second magic cube layer. A smart center shaft, a smart magic cube and a monitoring method for the smart magic cube are also disclosed.

Abstract: Disclosed are a smart spindle with a replaceable battery, and a smart Rubik's cube. The smart spindle comprises a core (100), a sensor (200) and a main control module (310), wherein the core (100) comprises a housing (110) with a cavity (111); the main control module (310) is mounted inside the cavity (111); the sensor (200) is electrically connected to the main control module (310); the sensor (200) is mounted at the core (100); the cavity (111) is also used for mounting a battery (400), the housing (110) is provided with a notch (112) for having access to the battery (400), and the notch (112) is in communication with the cavity (111); or, the exterior of the housing (110) is used for mounting the battery (400), and the housing (110) is provided with a through hole (113), such that the cavity (111) is in communication with the exterior of the housing (110) via the through hole (113).

Abstract: A smart center shaft, a smart Rubik's Cube, and a timing method therefor. The smart center shaft comprises a core, a sensor, and a master control module. The core comprises a housing having a cavity. The sensor is mounted on the core. The sensor comprises a stator and a rotor. The stator is fixed on the housing. The rotor is configured to be connected and rotate simultaneously with a Rubik's Cube layer of the smart Rubik's Cube, thus allowing the rotor to rotate with the Rubik's Cube layer relative to the stator. The master control module is mounted within the cavity. The master control module is electrically connected to the sensor. The master control module acquires a rotation signal of the Rubik's Cube layer on the basis of the relative rotation between the rotor and the stator. The sensor and the core form one integral body, the degree of integration is high, and the consideration of complex assembly relations between the stator and a center block or an intermediate connecting block is avoided.

Abstract: An intelligent magic cube, and a sensing shaft center structure and a timing method used thereby. The sensing shaft center structure comprises a main body; the main body comprises a core (1) having an internal cavity, and several tubular shafts (2) communicated with the core (1). An internal central control module (3) is provided inside the cavity, and comprises a state obtaining unit. Each tubular shaft (2) is provided with a state signal sending set (4). The state signal sending set (4) comprises a signal selector and multiple signal exciters. The signal selector may be paired with any signal exciter, and generate a corresponding state signal. The state obtaining unit is configured to be able to receive the state signal sent from the state signal sending set (4).