Abstract: A method includes: when it is determined that a user's gesture of moving an electronic device is a preset gesture, obtaining a capacitance measurement value sensed at a contact in a preset area of the touchscreen, where the preset area is located in a peripheral edge area of the touchscreen; and when the obtained capacitance measurement value meets a first preset condition, controlling display status switching of the touchscreen.

Abstract: A system and method for monitoring crack propagation of a transparent rock specimen monitors a breakage process of a specimen loading process. In the system and method for monitoring crack propagation of a transparent rock specimen, under the condition of no contact with a rock specimen, intensity changes of laser light passing through the transparent rock specimen in a loading state are determined, such that a computer (5) forms, according to laser intensity change data, a three-dimensional diagram of crack propagation of the transparent rock specimen (4) in a continuously loaded state at a plurality of set time points. This is used to analyze a breakage starting point and a crack propagation path and process of the transparent rock specimen (4) in the loading state, and achieve the purpose of qualitative analysis of the rock specimen.

Abstract: The present invention provides a system and method for monitoring crack propagation of a transparent rock specimen, belonging to the technical field of uniaxial compression tests of rock. The system and method monitor a breakage process of a specimen loading process. In the system and method for monitoring crack propagation of a transparent rock specimen, under the condition of no contact with a rock specimen, intensity changes of laser light passing through the transparent rock specimen in a loading state are determined, such that a computer (5) forms, according to laser intensity change data, a three-dimensional diagram of crack propagation of the transparent rock specimen (4) in a continuously loaded state at a plurality of set time points. This is used to analyze a breakage starting point and a crack propagation path and process of the transparent rock specimen (4) in the loading state, and achieve the purpose of qualitative analysis of the rock specimen.