Abstract: A fitness device includes two support frames mounted in a box, two driving motors mounted on the two support frames, a pull rope reel connected to the driving motors, a fitness pull rope wound around the pull rope reel and extending out of the box, and a control system for controlling the driving motors. The control system includes a main controller, a power module, a communication module connected to the main controller, a driving circuit and a sampling module electrically connected to the driving motors and the main controller. The power module is electrically connected to the main controller and the communication module. The driving circuit is electrically connected to the power module, the main controller and the driving motors. The two symmetrical driving motors are used to drive the pull rope reel to drive the fitness pull rope, such that shakes and vibrations generated during exercise can be offset.

Abstract: A fitness device includes a housing, a driving motor mounted on the housing, a fitness pull rope connected to the driving motor, and a control system connected to the driving motor. The control system comprises a main controller, a power module, a communication module, a driving circuit and a sampling module, the power module is electrically connected to the main controller and the communication module, the communication module is electrically connected to the main controller, the sampling module is electrically connected to the driving motor and the main controller, and the driving circuit is electrically connected to the power module, the main controller and the driving motor. The fitness pull rope is arranged on the driving motor functioning as a full driver, and the control system is used for controlling the pull force of the driving motor, thereby realizing smart fitness.

Abstract: The present disclosure relates to a rhythmic deposition production method and equipment of a perovskite thin film. The method includes the followings: a to-be-deposited substrate pre-prepared with a precursor BX2 thin film containing a perovskite precursor BX2 material is placed into a deposition-reaction chamber for evaporating and depositing a precursor AX material; the deposition is suspended after a period of time such that the precursor AX material deposited on a surface of the precursor BX2 thin film has sufficient time to diffuse into the precursor BX2 thin film so as to form a perovskite ABX3 crystal; after a period of suspension, deposition is performed again, such that the deposition and suspension processes are alternately repeated rhythmically and the AX material enters the BX2 thin film to fully react with the BX2 material, so as to obtain an ABX 3 perovskite crystal without BX2 material residual or with AX material surplus, until a perovskite ABX3 thin film with a set thickness is obtained.

Abstract: A method and a device for reading RFID/UHF label based on an audio interface are disclosed. According to the method, a built-in software module in an electronic device converts a first digital signal into an analog signal capable of being transmitted via the audio interface; the analog signal received by the audio interface is converted into a second digital signal via an audio communication circuit; then the RFID/UHF controller for digital signal control reads information from the RFID/UHF label; the RFID/UHF controller modulates and sends signals of a plurality of different frequency points, and the signal of every frequency point forms a signal channel. Compared with the prior art, the present invention can keep long-distance communication between the electronic device and a plurality of labels.

Abstract: A method and a device for reading RFID/UHF label based on an audio interface are disclosed. According to the method, a built-in software module in an electronic device converts a first digital signal into an analogue signal capable of being transmitted via the audio interface; the analogue signal received by the audio interface is converted into a second digital signal via an audio communication circuit; then the RFID/UHF controller for digital signal control reads information from the RFID/UHF label; the RFID/UHF controller modulates and sends signals of a plurality of different frequency points, and the signal of every frequency point forms a signal channel. Compared with the prior art, the present invention can keep long-distance communication between the electronic device and a plurality of labels.