Abstract: A connector and an electronic device, to resolve a problem of poor mountability of the connector. The connector includes a housing, a conductive core, and a fastening structure. The housing has a channel that passes through a first end and a second end of the housing. The conductive core is disposed in the channel. A solder leg is disposed on one end of the conductive core, and the solder leg protrudes from the first end of the housing and is configured to be soldered to a circuit board. The fastening structure is configured to fasten the housing to a panel. The conductive core may be directly soldered to the circuit board, so that a connection effect between the conductive core and the circuit board can be improved, and mounting steps can be reduced.

Abstract: A display brightness adjustment method includes: an electronic apparatus obtains a to-be-displayed image and determines an average pixel brightness value of each backlight partition on a liquid crystal display (LCD) panel based on the to-be-displayed image, where a backlight region of the LCD panel is divided into a plurality of backlight partitions; the electronic apparatus determines an initial dimming duty cycle corresponding to each backlight partition based on the average pixel brightness value of each backlight partition; the electronic apparatus determines a drive current value based on the initial dimming duty cycle corresponding to each backlight partition and drive current threshold data; the electronic apparatus adjusts, based on the drive current value, light emitting brightness of the backlight region that exists when the to-be-displayed image is displayed.

Abstract: This application discloses a display brightness adjustment method, including: an electronic apparatus obtains a to-be-displayed image and calculates an average pixel level APL of the to-be-displayed image. The electronic apparatus determines, based on the third light adjustment curve, an actual display brightness value corresponding to the average pixel level of the to-be-displayed image. The electronic apparatus adjusts display brightness of the to-be-displayed image based on the actual display brightness value. In this way, impact exerted on contrast when brightness is turned down at a low APL can be ensured, and a high contrast effect of image brightness of an HDR display can be ensured.

Abstract: The application discloses a rotary switch, and relates to the field of electrical technologies. The rotary switch includes an operating mechanism, an on-off apparatus, and a tripping component, and the operating mechanism includes an energy storage component and a drive component. The drive component is separately in driving connection with the energy storage component and the on-off apparatus. The energy storage component includes a latch and an energy storage spring that cooperates with the latch. The energy storage spring can be separately connected to the latch and the drive component in a snap-fit manner, the drive component is rotated, so that the energy storage component can store energy, and the drive component is used to drive the on-off apparatus to be switched on. The latch cooperates with the tripping component, so that the latch locks or unlocks the energy storage spring.

Abstract: An opening switch and a remote circuit breaker are provided. The opening switch includes a base, and an energy storage assembly (100) and a lock catch assembly (200) that are disposed on the base; the energy storage assembly (100) is disposed on an inner wall of the base, one end of the lock catch assembly (200) is hinged to the base, a lock catch protrusion (210) is disposed on the lock catch assembly (200), and the lock catch protrusion (210) includes a barrier wall (211); and when the barrier wall (211) is configured to abut against an energy storage arm (140) of the energy storage assembly (100), under an action force of the energy storage arm (140), the lock catch assembly (200) has a rotation tendency, so that the energy storage assembly (100) maintains an energy storage state.

Abstract: A remote switch-off mechanism and a rotary switch relates to the field of electrical technologies. A housing, an energy storage component, and a tripping component are provided. The energy storage component includes a latch, an energy storage spring, a rotating shaft, and an energy storage panel connected to the rotating shaft, an abutting portion is disposed on the energy storage panel, a first end of the energy storage spring is clamped to the housing, and a second end of the energy storage spring abuts against the abutting portion. The latch includes a hinged portion hinged to the housing, a limiting portion for limiting the second end of the energy storage spring, and a tripping portion that cooperates with the tripping component, and an elastic member is disposed between the latch and the housing, so that the tripping portion has a trend of moving toward the tripping component.

Abstract: A method for monitoring hydraulic fracturing range of a surface vertical shaft is provided by the present disclosure, belonging to the technical field of ultrahigh-pressure hydraulic fracturing monitoring of the coal mine vertical shafts.

Abstract: A switch, a power conversion apparatus, and a power supply system. The power supply system includes a control unit, a switch, a direct current source, and a power conversion unit. The switch is electrically connected between the direct current source and the power conversion unit, and the control unit is configured to send a switch-off signal to the switch when a fault occurs on the direct current source or the power conversion unit. The switch includes a contact component, a trip-free structure, and a knob that are sequentially disposed in a stacked manner in a first direction. A trip unit of the trip-free structure is configured to receive the switch-off signal, to unlock the trip unit from the cradle. The cradle drives the connecting rod structure to move, to separate the moving contact from the fixed contact.

Abstract: This application discloses a protection circuit for preventing a misconnection at an input end and a photovoltaic power generation system, and relates to the field of power electronics technologies. The protection circuit includes an input end, a misconnection detection unit, a mechanical interlocking unit, and a switch unit. The input end is configured to connect to an output end of a direct current power supply. A first input end of the misconnection detection unit is connected to a first port of the input end, and a second input end of the misconnection detection unit is connected to a second port of the input end. An output end of the misconnection detection unit is coupled to the mechanical interlocking unit. The mechanical interlocking unit is connected to the switch unit. A first end of the switch unit is configured to connect to the input end, and a second end of the switch unit is configured to connect to a next circuit.

Abstract: Some embodiments of the present disclosure provide a material intake device and a urea preparation machine. The material intake device includes a housing, an inlet port is provided at a first end of the housing, and an outlet port is provided at a second end of the housing, and the housing is further provided with an exhaust port used for exhausting an air in the housing; a separation plate is provided within the housing to isolate the inlet port from the exhaust port, an air inlet duct and an exhaust ductexhaust duct are formed respectively between the separation plate and sidewalls of the housing, the exhaust port is communicated with the exhaust ductexhaust duct, and an overflow port connecting the air inlet duct to the exhaust ductexhaust duct is provided between a bottom of the separation plate and the sidewalls of the housing.

Abstract: A display method for an electronic device including a first display area and a second display area. In the method, the electronic device determines a first application mode, adjusts, based on the first application mode, intensity values of color channels, stored in a hardware composer (HWC), determines, using the HWC, each first layer corresponding to the first display area, and overlays, using the HWC, the first layer and a background color layer corresponding to adjusted intensity values of the color channels. In an overlay process, the background color layer is located below the first layer, and the background color layer corresponds to the second display area. Then, the display is used to display an overlaid image.

Abstract: A photovoltaic power generation system includes a protection switch and a plurality of DC-DC converters. Each DC-DC converter includes a direct current bus, a DC-DC circuit, and at least one input interface. The input interface is configured to connect to a photovoltaic unit. The photovoltaic unit includes at least one photovoltaic module. The input interface is connected to the direct current bus by using the protection switch, the direct current bus is connected to an input end of the DC-DC circuit, and an output end of the DC-DC circuit is an output end of the DC-DC converter. The protection switch includes a release device and a switching device that are connected in series. The release device is configured to: when a short-circuit fault occurs on a line in which the release device is located, control the switching device to be disconnected.

Abstract: A display screen aging compensation method, system, and device, the method including obtaining display data of each display area of a display screen having at least one display area, the display data including usage time t of the display area, a maximum gray level value Lev_max that is of each primary color and that is obtained before the display data, and an average gray level value Lev of each primary color of three primary colors within the usage time t, where the usage time is accumulated screen-on time that is of the display area and that is obtained after the display screen is powered on, obtaining a decay ratio of each primary color of the display area based on the display data, and performing aging compensation on each display area based on the decay ratio of each primary color of each display area.

Abstract: A direct current power supply system includes N power supply devices, N triple-pole direct current switches, a positive bus, an M bus, and a negative bus. A positive input terminal of an ith triple-pole direct current switch is coupled to a first output terminal of an ith power supply device, an M input terminal of the ith triple-pole direct current switch is coupled to a second output terminal of the ith power supply device, a negative input terminal of the ith triple-pole direct current switch is coupled to a third output terminal of the ith power supply device, a positive output terminal of the ith triple-pole direct current switch is coupled to the positive bus, an M input terminal of the ith triple-pole direct current switch is coupled to the M bus, and a negative output terminal of the ith triple-pole direct current switch is coupled to the negative bus.

Abstract: A display control method includes displaying, by an electronic device, a first interface in full screen using a foldable display of the electronic device, and receiving, by the electronic device, a first folding operation for the foldable display. A display area of the foldable display is divided into a primary display, a secondary display, and a side display. In response to the first folding operation, displaying, by the electronic device, a second interface on the primary display or the secondary display of the foldable display, and displaying, by the electronic device, a beautified layer on the side display.

Abstract: A protection apparatus includes an interface, a protection switch, a direct current bus, and a controller. The apparatus is connected to at least two photovoltaic units via the interface, the at least two photovoltaic units are coupled to the direct current bus inside the apparatus to form at least two branches, and each branch is connected to at least one photovoltaic unit. The protection switch is configured to disconnect all or some of the photovoltaic units from the direct current bus, to enable a maximum of three photovoltaic units to be directly connected in parallel. According to the apparatus, a photovoltaic unit and a line are protected with a low power loss when a photovoltaic power generation system is faulty.

Abstract: A screen brightness adjustment method includes determining target brightness, determining a quantity of pixel rows controlled by each pulse in an emission (EM) signal required for implementing the target brightness, adjusting a pulse width of a pulse in a current EM signal based on the quantity of pixel rows controlled by each pulse in the EM signal required for implementing the target brightness to change a duty cycle of the EM signal, where the duty cycle reflects a quantity of pixel rows that are lit up and controlled by the EM signal.

Abstract: Some embodiments of the present disclosure provide a material intake device and a urea preparation machine. The material intake device includes a housing, an inlet port is provided at a first end of the housing, and an outlet port is provided at a second end of the housing, and the housing is further provided with an exhaust port used for exhausting an air in the housing; a separation plate is provided within the housing to isolate the inlet port from the exhaust port, an air inlet duct and an exhaust ductexhaust duct are formed respectively between the separation plate and sidewalls of the housing, the exhaust port is communicated with the exhaust ductexhaust duct, and an overflow port connecting the air inlet duct to the exhaust ductexhaust duct is provided between a bottom of the separation plate and the sidewalls of the housing.

Abstract: A screen brightness adjustment method includes determining target brightness, determining a quantity of pixel rows controlled by each pulse in an emission (EM) signal required for implementing the target brightness, adjusting a pulse width of a pulse in a current EM signal based on the quantity of pixel rows controlled by each pulse in the EM signal required for implementing the target brightness to change a duty cycle of the EM signal, where the duty cycle reflects a quantity of pixel rows that are lit up and controlled by the EM signal.

Abstract: A urea preparation machine includes a cabinet, a stirring tank, a filtering portion, a water tank portion and a heating portion. The stirring tank is provided in the cabinet. The filtering portion is provided in the cabinet. An inlet of the water tank portion is communicated with an outlet of the filtering portion. The heating portion is provided in the cabinet, the heating portion is communicated with the outlet of the water tank portion, and an outlet of the heating portion is communicated with the stirring tank. The independent heating portion is used for heating water in the water tank portion, then the water heated by the heating portion is conveyed to the stirring tank for preparing urea, through such installation, the heating portion is capable of heating the water in the water tank portion in time.