Abstract: This application provides a power failure detection method, including: obtaining a first fundamental wave signal of an alternating current (AC) at a first moment and a second fundamental wave signal at a second moment, where the second moment differs from the first moment by N sampling periods, and N is a positive integer; then obtaining a target signal orthogonal to the first fundamental wave signal based on the first fundamental wave signal and the second fundamental wave signal; quickly obtaining a real-time voltage amplitude of the AC at the first moment based on the first fundamental wave signal and the target signal; and determining a power failure detection result of the AC based on the real-time voltage amplitude.

Abstract: Disclosed are a speaker module and an earphone. The speaker module includes a first speaker unit, a bracket, and a second speaker unit. The first speaker unit includes a basin frame and a wiring terminal. The wiring terminal is disposed on the basin frame. The bracket includes an electrically conductive portion. The second speaker unit is fastened to the basin frame by using the bracket. An electrode of the second speaker unit is electrically connected to the wiring terminal by using the electrically conductive portion.

Abstract: A compact air compressor is provided. A plurality of blades are disposed on a driving wheel that is disposed on a second output shaft of a motor; an extension portion perpendicular to a cylinder is disposed on a cylinder mounting seat; an inner side of the extension portion is arc-shaped to accommodate the driving wheel; a plurality of grooves are formed at an end of the extension portion to serve as an air inlet passage; corresponding locating holes are respectively formed in a motor mounting seat and the extension portion of the cylinder mounting seat; the driving wheel is inserted into the extension portion, and connected by a threaded rod penetrating through the locating hole in the motor mounting seat and the locating hole in the extension portion; and a driven wheel is in transmission connection with the driving wheel through a transmission belt.

Abstract: A method includes determining, based on preset information associated with a target path, a navigation mode of the vehicle from a navigation mode group comprising a magnetic navigation mode and a simultaneous localization and mapping, SLAM, navigation mode; determining, based on sensing information from a sensing device corresponding to the determined navigation mode, a deviation between a location of the vehicle and the target path; and controlling movement of the vehicle based on the determined deviation.

Abstract: Methods, apparatuses, systems, and computer readable media for configuring a plurality of automated guided vehicles (AGVs). In a method, a plurality of folders corresponding to the plurality of AGVs are created at a management system managing the plurality of AGVs. A folder includes at least one configuration file for configuring an AGV. Based on a configuration file in the folder, a further folder of the plurality of folders is updated. One or more configuration files in the updated further folder are transmitted to an AGV corresponding to the further folder. Further, embodiments of present disclosure provide apparatuses, systems, and computer readable media for managing a plurality of AGVs.

Abstract: The present application discloses a single sided hydrophilic nonwoven fabric with high tensile strength and a CSR wrap made therefrom, wherein the single sided hydrophilic nonwoven fabric has a spunbonded/meltblown/spunbonded (SMS) structure consisting of a top spunbonded layer, a middle meltblown layer and a bottom spunbonded layer, wherein one side of the nonwoven fabric is hydrophilic, and the other side of the nonwoven fabric is hydrophobic.

Abstract: A method for forming conductive and stretchable traces on a substrate is disclosed. A photocurable ink is prepared by dispersing surface-modified liquid-metal particles in a solvent together with monomers, crosslinkers, dispersant, and photoinitiator. The ink is deposited onto a substrate and selectively exposed to patterned light to initiate photopolymerization and crosslinking of the functionalized particle surfaces, forming a patterned liquid-metal-polymer composite anchored to the substrate. Subsequent mechanical activation ruptures oxide shells surrounding the particles and allows the liquid-metal cores to merge into a continuous conductive layer that conforms to the projected pattern. The process operates under ambient conditions with low energy input and short exposure time, providing high-resolution, durable, and deformable conductive features suitable for wearable electronics, biointegrated sensors, and soft-robotic devices.

Abstract: An electrical connection structure and an electronic device, related to the field of interconnection technologies of a circuit board. The electrical connection structure includes a circuit board, a first connector, a third group of terminals, and a fourth group of terminals. The circuit board includes a first group of signal traces, a second group of signal traces, a first reference ground, and a second reference ground. The first reference ground and the second reference ground are spaced apart from each other. The first connector is arranged on the circuit board. The first connector includes a first group of terminals and a second group of terminals. The third group of terminals are electrically connected to the first group of terminals. The fourth group of terminals are electrically connected to the second group of terminals.

Abstract: A control method for an inverter circuit is provided. When an output current of a T-type three-level inverter circuit is greater than a preset threshold and the circuit is not in an overcurrent protection state, the overcurrent protection state is triggered. When the circuit is in the overcurrent protection state, outputting of a first drive signal is stopped, and a third drive signal is outputted, so that a first switch transistor and a second switch transistor in a first bridge arm are in an off state due to not receiving the first drive signal, and a second bridge arm is alternately turned on due to receiving the third drive signal.

Abstract: A power supply circuit includes a DC/DC conversion module, first/second AC/DC conversion modules, an alternating current input interface, and first/second alternating current output interfaces. A first end of the first AC/DC conversion module is connected to a battery module through the DC/DC conversion module, a first end of the second AC/DC conversion module is connected to the first end of the first AC/DC conversion module through a direct current bus, the first alternating current output interface is connected to a second end of the first AC/DC conversion module and a first terminal of the alternating current input interface, the second alternating current output interface is connected to a second end of the second AC/DC conversion module, both the first and second AC/DC conversion modules may operate in a rectification mode or an inversion mode, and the DC/DC conversion module operates in a discharging mode or a charging mode.

Abstract: Embodiments of the disclosure provide a method, apparatus, device and storage medium for processing a page task. The method includes: obtaining a target HTML file, wherein the target HTML file includes a script code of at least one page task, the target HTML file obtained by replacing a script reference tag of the at least one page task in an original HTML file with the script code, and the script reference tag requesting the script code of the page task; extracting the script code of the at least one page task from the target HTML file; and executing the script code of the at least one page task.

Abstract: A battery pack control method includes: detecting real-time load power of a multi-battery pack system; and when the real-time load power is less than a first power threshold, and at least two battery packs discharge in parallel, determining a target battery pack from the battery packs discharging in parallel, maintaining a discharge function of the target battery pack, and disabling a discharge function of another battery pack discharging in parallel other than the target battery pack.

Abstract: A control method of a power supply circuit is provided. The power supply circuit includes an AC/DC conversion circuit, a DC/DC conversion circuit, a BOOST circuit, and a BUCK/BOOST circuit that are commonly connected to a DC bus, a first device is connected to a first end of the AC/DC conversion circuit, and a DC load is connected to a second end of the BUCK/BOOST circuit. A bus voltage of the DC bus and a photovoltaic output voltage of a first photovoltaic module are obtained, and when the photovoltaic output voltage is greater than a preset input voltage, operating states of the AC/DC conversion circuit, the DC/DC conversion circuit, the BOOST circuit, and the BUCK/BOOST circuit are respectively controlled according to demand power of the first device, demand power of a battery module, demand power of a DC load, and the bus voltage.

Abstract: This application provides an address assignment method. According to the method, when an address assignment request is received through a first parallel port, an address assignment function of a parallel port other than the first parallel port is disabled; an address assignment instruction is sent to the first parallel port; and when an address configuration complete instruction is received through the first parallel port, the address assignment function of the parallel port other than the first parallel port is enabled.

Abstract: A control method of a multi-battery pack system is provided. The method includes: determining a first reference battery pack based on a charging-discharging state of the multi-battery pack system and battery voltages of enabled battery packs; determining a second reference battery pack based on the charging-discharging state of the multi-battery pack system and battery voltages of non-enabled battery packs; determining a to-be-turned off battery pack and a to-be-turned on battery pack based on a battery voltage of the first reference battery pack and a battery voltage of the second reference battery pack; and controlling to turn off the to-be-turned off battery pack and turn on the to-be-turned on battery pack.

Abstract: A compact air compressor is provided. A plurality of blades are disposed on a driving wheel that is disposed on a second output shaft of a motor; an extension portion perpendicular to a cylinder is disposed on a cylinder mounting seat; an inner side of the extension portion is arc-shaped to accommodate the driving wheel; a plurality of grooves are formed at an end of the extension portion to serve as an air inlet passage; corresponding locating holes are respectively formed in a motor mounting seat and the extension portion of the cylinder mounting seat; the driving wheel is inserted into the extension portion, and connected by a threaded rod penetrating through the locating hole in the motor mounting seat and the locating hole in the extension portion; and a driven wheel is in transmission connection with the driving wheel through a transmission belt.

Abstract: A method for controlling a buck-boost circuit includes: obtaining an input voltage and an output voltage; controlling the buck-boost circuit to enter a buck-boost mode when an absolute value of a voltage difference between the input voltage and the output voltage is less than a preset voltage threshold; and executing within each control cycle: in a first stage, controlling both first and second low-side switching transistors to be conductive and controlling both first and second high-side switching transistors to be non-conductive; in a second stage, controlling both the first and second high-side switching transistors to be conductive and controlling both first and second low-side switching transistors to be non-conductive; and in a third stage, controlling both the first and second high-side switching transistors to be conductive and controlling both the first and second low-side switching transistors to be non-conductive.

Abstract: The present disclosure provides a Klebsiella pneumoniae Y7-3 with a deposit number of CCTCC NO: M2019851. The strain can degrade corn stover into acetic acid, ethanol, and hydrogen, and can further metabolize into acetic acid, ethanol, 1,3-propanediol, lactic acid, and hydrogen.

Abstract: Backsheets having a combination of desirable liquid barrier properties and air permeability are provided. The backsheets include outermost spunbond layers and two or more fine-fiber containing nonwoven layers.

Abstract: This application discloses a signal anti-interference method and an electronic device, and relates to the field of terminals. A system-on-chip (SoC) chip may obtain parameter information (for example, an amplitude of a radio frequency signal, a phase of the radio frequency signal, a waveform of the radio frequency signal and the like) of the radio frequency signal coupled on a mobile industry processor interface (MIPI) signal line. Based on the parameter information of the radio frequency signal, the SoC chip may generate a reverse signal of the radio frequency signal, where the reverse signal is the same as the radio frequency signal in amplitudes (which may also be referred to as amplitude values) and waveforms and opposite in phases. The SoC chip may superimpose the reverse signal with a signal transmitted by the MIPI signal line, to eliminate the radio frequency signal coupled on the MIPI signal line.