Abstract: The present invention discloses a extra thick hot rolled H section steel and a production method therefor. The extra thick hot rolled H section steel contains, by mass, the following chemical components: 0.04-0.11% of C, 0.10-0.40% of Si, 0.40-1.00% of Mn, 0.40-1.00% of Cr, 0.10-0.40% of Cu, 0.020-0.060% of Nb, 0.040-0.100% of V, 0.010-0.025% of Ti, 0.010-0.030% of Al, 0.0060-0.0120% of N, not more than 0.015% of P, not more than 0.005% of S, not more than 0.0060% of O, and the balance Fe and trace residual elements, wherein 0.090%?Nb+V+Ti?0.170%, 6.5?(V+Ti)/N?10.5, and 0.30%?CEV?0.48%. The extra thick hot rolled H section steel has a flange thickness of 90 mm-150 mm, has excellent comprehensive mechanical properties, and can well meet the needs for heavy supporting structural parts of high-rise buildings, large squares, bridge structures, etc.

Abstract: This application relates to the artificial intelligence (AI) field, and specifically, to a voice quality enhancement method and a related device. The method includes: after a PNR mode is enabled, obtaining a noisy voice signal and target voice-related data, where the noisy-carrying voice signal includes a voice signal of a target user and an interfering noise signal, and the target voice-related data indicates a voice feature of the target user; and performing noise reduction on the noisy voice signal based on the target voice-related data by using a trained voice noise reduction model to obtain a noise-reduced voice signal of the target user, where the voice noise reduction model is implemented based on a neural network. In embodiments of this application, voice of a target person can be enhanced, and interference can be suppressed.

Abstract: Disclosed is an apparatus for charging a battery comprising a first charging device configured to communicate with at least one second charging device, the first charging device and the at least one second charging device configured to charge the battery, and comprising a first controller configured to control the first charging device, wherein the first controller determines the number of the at least one second charging devices by communicating with a second controller.

Abstract: A personal care appliance 10 comprises an actuator 14, a current sensor 28 for monitoring a driving current, and a controller 24. The actuator 14, operable according to a non-linear response characteristic 58 of amplitude versus frequency, includes a movable shaft 18 configured for resonant movement 38 in response to a drive signal 25, further for being coupled with a workpiece 20. The controller 24 (i) detects at least one of a plurality of different characteristic load states (100,102,104,106,108,110) in response to a perturbation in the monitored driving current 29 and (ii) actively delivers the drive signal 25 to the actuator 14 selected from at least two different drive signals (66,70) as a function of a detected characteristic load state.

Abstract: A drivetrain assembly (100, 200) for a personal care device (10), the drivetrain assembly including a resonator (110) connected to a transmission component (24) configured to transmit oscillations to the removable attachment; and a drive coil (120) configured to oscillate the resonator in a first direction; where the drive coil is configured to generate an installation or removal signal in response to installation or removal of the removable attachment, the installation or removal of the removable attachment generating movement of the resonator in a second direction; and where the drivetrain assembly is configured to communicate the generated signal to a controller.

Abstract: A control method for a series hybrid power system or synergic electric power supply and a control device thereof are disclosed. The control device includes: a generator reference current value generating module and a generator current control module. The generator reference current value generating module is configured to generate a reference current value of a generator according to an actual current value of an energy storage device, a reference current value of the energy storage device, an actual voltage value of a DC bus, and a reference voltage value of the DC bus. The generator current control module is configured to generate a control signal of a rectifier according to the reference current value of the generator, the actual value of any two-phase current of the generator, and an actual angular velocity of the generator, thereby controlling the series hybrid power system or the synergic electric power supply.

Abstract: A control method for a series hybrid power system or synergic electric power supply and a control device thereof are disclosed. The control device includes: a generator reference current value generating module and a generator current control module. The generator reference current value generating module is configured to generate a reference current value of a generator according to an actual current value of an energy storage device, a reference current value of the energy storage device, an actual voltage value of a DC bus, and a reference voltage value of the DC bus. The generator current control module is configured to generate a control signal of a rectifier according to the reference current value of the generator, the actual value of any two-phase current of the generator, and an actual angular velocity of the generator, thereby controlling the series hybrid power system or the synergic electric power supply.

Abstract: A whitening smart pen apparatus (10) for automatically dispensing a teeth whitening substance onto one or more teeth of a user comprises a fluid reservoir (16), a nozzle (18) having an output port (26), a fluid dispenser (20), a sensor (22) and a controller (24). The fluid dispenser dispenses the teeth whitening substance from the fluid reservoir to the nozzle and is output via the output port. The sensor, positioned in an advance dispensing direction of the nozzle, senses a target surface that comprises either (i) a tooth surface (12) or (ii) other surface (14). The controller (24) is configured for (i) controlling a gating of the fluid dispenser (20) to dispense the teeth whitening substance from the fluid reservoir (16) in response to the sensor (22) detecting the tooth surface (12), and (ii) stopping or disabling the gating of the fluid dispenser to stop or disable a dispensing of the teeth whitening substance from the fluid reservoir in response to the sensor (22) detecting the other surface (14).

Abstract: A drivetrain assembly (100, 200) for a personal care device (10), the drivetrain assembly including a resonator (110) connected to a transmission component (24) configured to transmit oscillations to the removable attachment; and a drive coil (120) configured to oscillate the resonator in a first direction; where the drive coil is configured to generate an installation or removal signal in response to installation or removal of the removable attachment, the installation or removal of the removable attachment generating movement of the resonator in a second direction; and where the drivetrain assembly is configured to communicate the generated signal to a controller.

Abstract: An oral care appliance (100), such as an electric toothbrush, utilizing non-linear resonant systems is described herein. In one exemplary embodiment, the oral care appliance includes a longitudinal shaft (102), a brush head (130), and a handle (190). The handle includes a motor (140) that generates a first amplitude (404) for the brush head based on the brush head being outside of the user's mouth, when no mass is applied to the brush head. In response to the brush head being inside of the user's mouth, when mass is applied, such as by pressing the brush head against the teeth, the motor causes a second amplitude (410) to be generated for the brush head that is larger than the first amplitude.

Abstract: A whitening smart pen apparatus (10) for automatically dispensing a teeth whitening substance onto one or more teeth of a user comprises a fluid reservoir (16), a nozzle (18) having an output port (26), a fluid dispenser (20), a sensor (22) and a controller (24). The fluid dispenser dispenses the teeth whitening substance from the fluid reservoir to the nozzle and is output via the output port. The sensor, positioned in an advance dispensing direction of the nozzle, senses a target surface that comprises either (i) a tooth surface (12) or (ii) other surface (14). The controller (24) is configured for (i) controlling a gating of the fluid dispenser (20) to dispense the teeth whitening substance from the fluid reservoir (16) in response to the sensor (22) detecting the tooth surface (12), and (ii) stopping or disabling the gating of the fluid dispenser to stop or disable a dispensing of the teeth whitening substance from the fluid reservoir in response to the sensor (22) detecting the other surface (14).

Abstract: An oral care appliance (100), such as an electric toothbrush, utilizing non-linear resonant systems is described herein. In one exemplary embodiment, the oral care appliance includes a longitudinal shaft (102), a brush head (130), and a handle (190). The handle includes a motor (140) that generates a first amplitude (404) for the brush head based on the brush head being outside of the user's mouth, when no mass is applied to the brush head. In response to the brush head being inside of the user's mouth, when mass is applied, such as by pressing the brush head against the teeth, the motor causes a second amplitude (410) to be generated for the brush head that is larger than the first amplitude.

Abstract: A personal care appliance 10 comprises an actuator 14, a current sensor 28 for monitoring a driving current, and a controller 24. The actuator 14, operable according to a non-linear response characteristic 58 of amplitude versus frequency, includes a movable shaft 18 configured for resonant movement 38 in response to a drive signal 25, further for being coupled with a workpiece 20. The controller 24 (i) detects at least one of a plurality of different characteristic load states (100,102,104,106,108,110) in response to a perturbation in the monitored driving current 29 and (ii) actively delivers the drive signal 25 to the actuator 14 selected from at least two different drive signals (66,70) as a function of a detected characteristic load state.

Abstract: A method and a system of synchronizing an unread message of instant communication are disclosed. The method includes: obtaining information of an unread message in each dialogue associated with an instant messaging account from a server when the account is logged in via a current terminal; and displaying the information of the unread message in the current terminal, wherein the unread message is a message with time information that is larger than a first time stamp in each dialogue, the first time stamp being time information of a most recently read message in each dialogue submitted by the instant messaging account, and the first time stamp corresponding to each dialogue of the instant messaging account being stored in the server.

Abstract: Determining message data to present based on a message is disclosed, including: identifying a web address included in a message sent from a first instant messaging client to a second instant messaging client; extracting identifying information to use to identify page content from the web address; retrieving message data corresponding to the identifying information including by sending a processing request to a server; and presenting the message data within a display window of the second instant messaging client.

Abstract: A method for single side band transmissions begins by mixing, in a current domain, an in-phase component of outbound formatted data with an in-phase component of a local oscillation to produce a first mixed signal. The method continues by mixing, in the current domain, a quadrature phase component of the outbound formatted data with a quadrature component of the local oscillation to produce a second mixed signal. The method continues by summing the first and second mixed signals to produce a radio frequency signal. The method continues by amplifying the radio frequency signal prior to transmission.

Abstract: The invention provides a wireless bell device and an operating method thereof. The wireless bell device comprises a controlling module and a transmitting module. The controlling module has a button. When the button is pressed, a controlling signal is transmitted by the controlling module. The transmitting module is electrically connected to the controlling module. When the controlling signal is received by the transmitting module, the transmitting module transmits a wireless signal to a mobile communication device. The mobile communication device receives the wireless signal and rings a bell according to the wireless signal.

Abstract: The invention provides a conjugated diene-vinyl aromatic hydrocarbon copolymer containing a siloxane compound, which improves the abrasion resistance of the conjugated diene-vinyl aromatic hydrocarbon copolymer, comprising: 100 parts by weight of the conjugated diene-vinyl aromatic hydrocarbon copolymer and 0.1 to 50 parts by weight of the siloxane compound. The siloxane compound of the invention has a formula (I) as below: wherein each X independently represents C1˜C12 alkyl, C1˜C12 alkoxy, C1˜C12 cycloalkoxy, C1˜C12 alkenyl, C1˜C12 alkylamino, C1˜C12 alkylol, C1˜C12 thiol, halogen, carboxyl, hydroxyl, amino, aryl, or hydrogen; each Y independently represents C1˜C12 alkyl, C1˜C12 alkoxy, C1˜C12 cycloalkoxy, C1˜C12 alkenyl, C1˜C12 alkylamino, C1˜C12 alkylol, C1˜C12 thiol, halogen, carboxyl, aryl, or hydrogen; and n is an integer between 5 and 10,000.

Abstract: A single side band transmitter having reduced DC offset includes a current source modulation module, a current mirror module, a 1st mixing module, a 2nd mixing module, a summing module, and a power amplifier. The current source module is operably coupled to modulate, in accordance with a modulation protocol (e.g., FSK) data to produce an in-phase current component and a quadrature current component. The current mirror module is operably coupled to mirror the in-phase current component to produce a mirrored in-phase current component and is also operably coupled to mirror the quadrature current component to produce a mirrored quadrature current component. The 1st mixing module is operably coupled to mix the mirrored in-phase current component with an in-phase current component of a local oscillation to produce a 1st mixed current signal.