Abstract: Disclosed are a brain-computer interface based robotic arm self-assisting system and method. The system comprises a sensing layer, a decision-making layer and an execution layer. The sensing layer comprises an electroencephalogram acquisition and detection module and a visual identification and positioning module and is used for analyzing and identifying the intent of a user and identifying and locating positions of a corresponding cup and the user's mouth based on the user intent. The execution layer comprises a robotic arm control module that performs trajectory planning and control for a robotic arm based on an execution instruction received from a decision-making module.

Abstract: Disclosed are a brain-computer interface based robotic arm self-assisting system and method. The system comprises a sensing layer, a decision-making layer and an execution layer. The sensing layer comprises an electroencephalogram acquisition and detection module and a visual identification and positioning module and is used for analyzing and identifying the intent of a user and identifying and locating positions of a corresponding cup and the user's mouth based on the user intent. The execution layer comprises a robotic arm control module that performs trajectory planning and control for a robotic arm based on an execution instruction received from a decision-making module.

Abstract: A preparation method for camellia extract includes the following steps: 1) Removing impurities from fresh camellia and/or fresh camellia buds, cutting the fresh camellia and/or fresh camellia buds into small sections for use as raw materials; 2) Placing a certain quantity of raw materials into a ultrasonic vessel, adding in a solvent having a mass ratio of 1:3 to 1:30 to form a mixture, uniformly stirring the mixture, and then adding in a certain amount of inorganic acid and/or organic acid to adjust the pH value to 1.3 to 3.0, then soaking the raw materials for 10 minutes to 30 minutes; 3) Performing ultrasonic treatment for 30 minutes to 60 minutes, controlling the ultrasonic frequency to be 20 KHz to 25 KHz, the ultrasonic power to be 1000 W to 2000 W, the ultrasonic temperature to be 15° C. to 50° C., then performing filtration, sterilization and detection to obtain camellia extract.

Abstract: A preparation method for camellia extract includes the following steps: 1) Removing impurities from fresh camellia and/or fresh camellia buds, cutting the fresh camellia and/or fresh camellia buds into small sections for use as raw materials; 2) Placing a certain quantity of raw materials into a ultrasonic vessel, adding in a solvent having a mass ratio of 1:3 to 1:30 to form a mixture, uniformly stirring the mixture, and then adding in a certain amount of inorganic acid and/or organic acid to adjust the pH value to 1.3 to 3.0, then soaking the raw materials for 10 minutes to 30 minutes; 3) Performing ultrasonic treatment for 30 minutes to 60 minutes, controlling the ultrasonic frequency to be 20 KHz to 25 KHz, the ultrasonic power to be 1000 W to 2000 W, the ultrasonic temperature to be 15° C. to 50° C., then performing filtration, sterilization and detection to obtain camellia extract.