Abstract: The disclosure provides A LiDAR angle locking mechanism, including: a stator assembly; a rotor assembly, coupled to the stator assembly by a rotating shaft, the rotor assembly including a window; and a motor, configured to drive the rotor assembly rotate with respective with the stator assembly around the rotating shaft; a bistable self-holding electromagnet; a controller, and a latching pin, arranged between the rotating shaft and the bistable self-holding electromagnet. The latching pin is capable of locking and unlocking the rotor assembly thorough the bistable self-holding electromagnet based on a forward voltage or a reverse voltage is received by the bistable self-holding.

Abstract: The present invention discloses a wide voltage adaptable drive and control circuit for hairdryers, which relates to the technical field of AC-DC conversion and comprises a main control-motor driver chip U2, a main power module, a voltage sampling module, and a rectification mode switching module. The voltage sampling module is used to detect a voltage of at least one node in the main power module and provide feedback to the main control-motor driver chip U2. The main control-motor driver chip U2 is used to drive the rectification mode switching module to run based on the voltage fed back by the voltage sampling module, and to switch a running mode of a bridge rectifier sub-module BR1 between a full-wave rectification mode and a voltage doubling rectification mode. The present invention primarily addresses the problem of providing a drive and control circuit for hairdryers with wide voltage adaptability.

Abstract: vided are a method and device for evaluating production proportions of different gases in coalbed methane reservoir. It includes: calculating a coalbed porosity and a coalbed water on at the beginning of production following fracturing flowback based on the physical y parameters of the target coalbed methane reservoir; calculating original reserves of ed gas, free gas, and dissolved gas based on the physical property parameters of the target coalbed methane reservoir; calculating an average coalbed pressure and cumulative productions of the three gases each day based on cumulative quantities of gas production, water production, and water influx each day, the coalbed porosity and the coalbed water saturation at the beginning of production following fracturing flowback, and the physical property parameters; and calculating daily production rates of the three gases based on the cumulative production of each gas, obtaining daily production proportions of the three gases.

Abstract: A light-emitting module includes a carrier substrate, a first light-emitting circuit layer, a backboard, a mounting cavity and at least one connection member. The first light-emitting circuit layer is disposed on the carrier substrate. The backboard is disposed on a side of the carrier substrate away from the first light-emitting circuit layer and is in contact with the carrier substrate. The mounting cavity is disposed in at least one of the backboard and the carrier substrate, and an inner wall of the mounting cavity is enclosed by both the backboard and the carrier substrate. A connection member is disposed in the mounting cavity and fixedly connected to the carrier substrate and the backboard.

Abstract: The present disclosure provides a smart connection device, a jump starter and a battery clamp. The smart connection device includes a power connection terminal electrically couple with a power source, a load connection terminal electrically couple with an external load, a switch element electrically coupled between the power connection terminal and the load connection terminal, and a switch drive module electrically coupled to the switch element. A reverse connection detection module detects a connection state between the load connection terminal and the external load, and outputs a corresponding control signal to switch operation states of the switch drive module. The switch drive module in an active state is able to respond to a drive signal to turn on the switch element. The switch element is in an off state when the switch drive module is in a disable state, to prevent the power source from discharging to the external load.

Abstract: A method for predicting a recovery factor of deep coalbed methane includes: determining physical parameters, a capillary pressure, corrected values of reservoir porosity and water saturation, average coal reservoir pressure, cumulative water production, and conventional average gas deviation factor at multiple production dates; calculating an actual average gas deviation factor; establishing a prediction model for gas production of a reservoir; calculating an iterative value of a control volume; returning the iterative value to replace an initially given value of the control volume for loop calculation, determining a first relationship model between the cumulative water production and the average coal reservoir pressure; determining, based on the first relationship model, a predicted value on the vertical axis of the prediction model; and substituting the predicted value into a prediction model established in a last iteration of the loop calculation to obtain a recoverable reserve of coalbed methane, and calc

Abstract: A multi-band LED disinfection system and a multi-band LED disinfection lamp are provided. The multi-band LED disinfection system comprises a multi-band LED disinfection device; and a control terminal, which is connected to and controls the multi-band LED disinfection device. The control terminal sends a wavelength band control command to the multi-band LED disinfection device according to a disinfection target, and the multi-band LED disinfection device drives LED beads of corresponding wavelength bands. Different wavelength bands of ultraviolet light can be provided to achieve the disinfection of various germs, which leads to better sterilization and disinfection effects. A control module can be used to switch between disinfection of a certain wavelength band and disinfection of superposed wavelength bands.

Abstract: A patient support system for providing improved guidance tools with respect to a patient support apparatus. A user interface is configured to receive inputs from a user, and an information output device is configured to provide instructions to the user. The user interface and the information output device may be on a touchscreen display. The user inputs may include a search query. A controller may be adapted to determine search results corresponding to operational functions of the patient support apparatus responsive to the search query and to provide said search results to the user with the information output device. The user input may include shorthand commands corresponding to operational functions of the patient support apparatus. The user interface may include a voice actuation device configured to receive voice actuation commands from a user.

Abstract: A controller for a multiphase switching converter has a feedback pin, a reference pin, and a plurality of switching control pins. When the controller is a master controller, the reference pin provides a reference output signal based on a plurality of currents flowing through a plurality of switching circuits. When the controller is a slave controller, the feedback pin receives the reference output signal from the master controller, and the slave controller provides the plurality of switching control signals based on the plurality of currents flowing through the plurality of switching circuits, the reference output signal, and a feedback signal representative of an output voltage of the multiphase switching converter.

Abstract: The present disclosure provides acoustic model training methods and systems, and speech synthesis methods and systems. An acoustic model training method may include obtaining a plurality of training samples. Each of the plurality of training samples may include a sample text input, a sample emotion label corresponding to the sample text input, and a sample reference mel spectrum corresponding to the sample text input. The acoustic model training method may include inputting the plurality of training samples into a target model. The target model may include the acoustic model and an auxiliary module. The acoustic model training method may further include iteratively adjusting at least one model parameter of the acoustic model based on a loss target.

Abstract: A drug transdermal delivery system comprises sponge spicules and a low-frequency sonophoresis device, the drug transdermal delivery system firstly applies a low-frequency sonophoresis to skin using the low-frequency sonophoresis device, a surface of the skin is then massaged with the sponge spicules.

Abstract: A linkage mechanism includes: a base member; a first link rotatably connected to the base member, the first link defining a first arc-shaped guide groove centered on a pivot axis about which the first link rotates relative to the base member; a second link rotatably connected to the first link; a connecting member rotatably connected to the base member and the second link; an actuating mechanism including a linear actuator and a transmission member that is driven by the linear actuator, the transmission member having a first end rotatably connected to the output shaft, and a second end slidably received in the first arc-shaped guide groove. When the linear actuator drives the connecting member to extend and move, the second end of the transmission member abuts against one end of the first arc-shaped guide groove, which drives the first link to rotate relative to the base member.

Abstract: This application discloses a memory detection method and an electronic device. The method may include: The electronic device detects first memory occupied by a first process, where the first memory is a resident set size RSS; when the first memory is greater than a first threshold, the electronic device detects second memory occupied by the first process, where the second memory is a proportional set size PSS; and when the second memory is greater than the first threshold, the electronic device performs memory detection on the first process based on preset time.

Abstract: A controller for a multiphase switching converter has a turn-on control circuit and a switch control circuit. The turn-on control circuit provides a turn-on control signal based on a voltage sensing signal and a voltage reference signal. The switch control circuit generates a plurality of switch control signals based on the turn-on control signal and a plurality of current sensing signals. The switch control circuit regulates a plurality of switching circuits to operate in n groups, with each group comprising k switching circuits that are turned on at the same time, where n and k are integers greater than one. The switch control circuit sequentially turns on the n groups of switching circuits in response to pulses of the turn-on control signal.

Abstract: An electronic device may be provided with an antenna resonating element on a first substrate that is mounted to a second substrate. A signal conductor may be coupled to a feed terminal on the antenna resonating element. The signal conductor may include impedance matching structures for the antenna. The impedance matching structures may include an open transmission line stub, a grounded transmission line stub, and a phase shifting segment. The impedance matching structures may configure the antenna to exhibit a wide bandwidth in an ultra-wideband (UWB) frequency band. If desired, the signal conductor may have a phase-shifting segment configured to match a non-50 Ohm impedance of a radio-frequency front end coupled to the signal conductor.

Abstract: A computer based method for an electronic marketing campaign from a customer to a contact receives a campaign having an email message body and a historic profile of a previous campaign by the customer. The email message body includes text and image data. The email message body is preprocessed based upon the campaign and the historic profile to produce campaign training data. A neural network learning model is trained with the campaign training data. The neural network provides a subject line recommendation inference, and named entity recognition is performed on the subject line recommendation.

Abstract: Embodiments of the present disclosure provides a method and a system for image quality assessment. The method may include obtaining a first image of a target video, wherein the first image may be determined based on a target video frame in the target video; and determining a target image quality of the target video frame based on at least one of a first parameter and a second parameter of the first image, wherein, the first parameter may be determined based on an effective region in the first image, the second parameter may be determined based on a first similarity parameter between the first image and a second image, and the second image may be determined based on a video frame other than the target video frame in the target video.

Abstract: Methods, systems, and devices for abnormal sound detection are described. An audio recording of a mechanized environment may be obtained. First sounds extracted from the audio recording may be categorized into a set of categorical sounds. A library of first sound patterns may be generated using the categorical sound and based on second sounds extracted from the audio recording. The first sound patterns may include sequences of the categorical sounds. Audio data including audio signals capture by sensors in the mechanized environment may be received, and second sound patterns detected in the audio signals may be compared with the first sound patterns. Based on comparing the second sound patterns with the first sounds patterns, a sound pattern that is not in the library of the first sound patterns may be identified. An alarm may be generated based on detecting the sound pattern a threshold quantity of times.

Abstract: A multiphase power supply has an input terminal, an output terminal, a plurality of transformers, a plurality of switching circuits, and a control circuit. Secondary windings of the plurality of transformers are coupled in series with a compensation inductor. The plurality of switching circuits are coupled in parallel between the input terminal and the output terminal. Each of the plurality of switching circuits is coupled to the output terminal via a primary winding of a corresponding transformer. The control circuit senses an average current flowing through the plurality of switching circuits and a current flowing through the compensation inductor respectively, and corrects a sensing result of the average current based on the current flowing through the compensation inductor. The control circuit further provides a plurality of pulse width modulation signals based on the output voltage and the corrected sensing result to control the plurality of switching circuits.