Abstract: A method and apparatus for limiting an RF alternating magnetic field in MRI. The method includes: measuring a perpendicular distance between a local coil placed on a scanned part of a patient and the center of a detection hole of a magnetic resonance (MR) scanner; based on the perpendicular distance, determining a deviation between the B1 field strength at the position of the local coil during an MR scan and the B1 field strength at the center of the detection hole; based on the deviation, computing a conversion coefficient for conversion between the B1 field strength at the position of the local coil and the B1 field strength at the center of the detection hole; based on the B1 field strength required when the surface temperature of the local coil is equal to a safe temperature upper limit and the conversion coefficient, computing a maximum permissible field strength of the B1 field at the center of the detection hole.

Abstract: A segmented capacitance calibration circuit applied in a pure capacitor array structure includes a first calibration unit, a second calibration unit and a selection switch which are all connected with a scaling capacitor. The first and second calibration units include at least one capacitor, and the selection switch is configured to select the first or second calibration unit to be connected to the pure capacitor array structure. When the first calibration unit is connected to the pure capacitor array structure and in parallel with the scaling capacitor, a negative error calibration is performed on the scaling capacitor. When the second calibration unit is connected to the pure capacitor array structure and in series with the scaling capacitor, a positive error calibration is performed on the scaling capacitor. The nonlinear problem caused by the precision error of the scaling capacitor in the pure capacitor array structure is solved.

Abstract: A method for making a semiconductor device includes forming a ROX layer on a substrate and a patterned silicon oxynitride layer on the patterned ROX layer; conformally forming a dielectric oxide layer to cover the substrate, the patterned silicon oxynitride layer, and the patterned ROX layer; and fully oxidizing the patterned silicon oxynitride layer to form a fully oxidized gate oxide layer on the substrate.

Abstract: A printing head and a method for applying a correction for mounting deviation of light-emitting chips are provided. The printing head includes a plurality of light-emitting chips. Each light-emitting chip includes a plurality of primary light-emitting elements that are continuously arranged. At least one of two adjacent light-emitting chips further includes at least one spare light-emitting element continuously and linearly arranged after the primary light-emitting elements. If the two adjacent light-emitting chips are both at a target mounting position, first N light-emitting units of one of the two light-emitting chips respectively face to first N light-emitting units of the other one of the two light-emitting chips, where N?1. Each two of the light-emitting units facing to each other form a group. One of the two light-emitting units in each of the groups is set to a light emission disabled state.

Abstract: The present disclosure provides a collaborative robot arm and a joint module. The joint module includes a housing, a driving assembly, and a multi-turn absolute encoder. The joint module detects the angular position of the output shaft and records a number of rotating revolutions of the output shaft only by means of the multi-turn absolute encoder. The multi-turn absolute encoder includes a base, a bearing, a rotating shaft, an encoding disk, and a circuit board, the encoding disk is rotatably connected with the base by the rotating shaft and the bearing, the circuit board is fixedly connected with the base, and the reading head on the circuit board detects the angular position of the output shaft cooperatively with the encoding disk, making the multi-turn absolute encoder be an integrated structure. The base and the rotating shaft are detachably connected with the housing and the output shaft respectively.

Abstract: An integrated joint module includes a housing, a driving assembly, a speed reduction assembly, a braking assembly and an encoding assembly. The housing includes a first housing and a second housing, an annular supporting platform is arranged on an inner side of the first housing. The driving assembly includes an output shaft, a stator embedded in the annular supporting platform, and a rotor connected with the output shaft and arranged on an inner side of the stator, the speed reduction assembly and the braking assembly are connected with two ends of the output shaft. The encoding assembly is arranged on a side of the braking assembly away from the driving assembly and connected with the output shaft, the second housing is sleeved on the encoding assembly and connected with the first housing. The integrated joint module helps to simplify the structure of the joint module and reduce the cost.

Abstract: A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

Abstract: The present disclosure describes a semiconductor structure that includes a channel region, a source region adjacent to the channel region, a drain region, a drift region adjacent to the drain region, and a dual gate structure. The dual gate structure includes a first gate structure over portions of the channel region and portions of the drift region. The dual gate structure also includes a second gate structure over the drift region.

Abstract: A joint module is provided which includes a housing, a driving assembly, a speed reduction assembly, a first fastener, a second fastener and a third fastener. The driving assembly includes an output shaft, a lower bearing seat and a lower bearing, an inner ring and an outer ring of the lower bearing are respectively connected with the output shaft and the lower bearing seat. The first fastener fixes the lower bearing seat on the housing, and the second fastener fixes the speed reduction assembly on the housing. The third fastener fixes the input shaft of the speed reduction assembly to the output shaft. The output shaft of the driving assembly and the input shaft of the speed reduction assembly are separate structural members, which not only allows the driving assembly and the speed reduction assembly to be tested separately before assembly, but also facilitates the later maintenance.

Abstract: A power module package is provided. The power module package includes an electronic assembly that includes a substrate and a power device group. The substrate includes an insulating layer, a circuit pattern layer, and a conductive heat-dissipating layer. The circuit pattern layer and the conductive heat-dissipating layer are respectively disposed at two opposite sides of the insulating layer. The power device group is disposed on the circuit pattern layer, and the power device group and the circuit pattern layer are configured to form a common circuit. A total area of the conductive heat-dissipating layer is greater than that of the circuit pattern layer, and a thickness of the circuit pattern layer is greater than that of the insulating layer.

Abstract: Disclosed are a Bluetooth intelligent unlocking method, an apparatus, a device and a storage medium. The method includes: scanning terminal devices within a preset range based on a Bluetooth signal, and determining whether there is a terminal device according to a scanning result; in responding to that there is a terminal device, obtaining device information of the terminal device and verifying the device information; in responding to that the device information is validated, unlocking a Bluetooth lock upon receiving an unlocking command triggered based on a preset key; further, when there is the terminal device within the preset range, the present application unlocks the Bluetooth intelligent lock based on the unlocking command triggered by the preset key, so that the user does not need to unlock through the app of the mobile phone to improve the user experience.

Abstract: A power module package is provided. The power module package includes an electronic assembly, a first terminal assembly and a second terminal assembly. The electronic assembly at least includes a substrate. The first terminal assembly includes a first power device terminal, and the second terminal assembly includes a second power device terminal. The first power device terminal and the second power device terminal respectively extend from different surfaces of the substrate to form a height difference therebetween. The first power device terminal includes a first contact section and a first non-contact section. The first contact section is directly connected to the substrate, and the first non-contact section is not in contact with the substrate. The substrate protrudes from the first contact section and extends to a position under the first non-contact section.

Abstract: Disclosed are an intelligent unlocking method, an apparatus, a device and a storage medium. The method includes: waking up a Bluetooth module and broadcasting a Bluetooth signal upon receiving an unlocking instruction; determining whether a terminal device receiving the Bluetooth signal is a terminal device paired with the Bluetooth module successfully within a preset time period; and in responding to that the terminal device receiving the Bluetooth signal is the terminal device paired with the Bluetooth module successfully within the preset time period, establishing a Bluetooth connection with the terminal device, and changing the Bluetooth module to a sleep state after a Bluetooth lock is opened.

Abstract: Disclosed is a Bluetooth smart padlock, including a lock housing, a lock beam, a lock tab assembly, a power assembly and a sensing switch. The lock housing is provided with a Bluetooth module for establishing a communication with a mobile terminal and a controller electrically connected with the Bluetooth module; the lock beam is partially provided in the lock housing, and provided with a lock tab groove; a lock tab assembly and a power assembly are both provided in the lock housing, wherein the lock tab assembly comprises a lock tab piece, and the power assembly is in transmission connection with the lock tab piece to drive the lock tab piece to extend into or separate from the lock tab groove, to unlock or lock the lock beam; and the sensing switch is provided on the lock housing for controlling the power assembly.

Abstract: A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

Abstract: The present application relates to a method of operating a capacitance sensing device comprises: calculating a difference of a raw data compared to one of the raw data received in a previous data frame; and performing a comparison calculation based on the raw data and a stored baseline value to determine whether a proximity event has occurred. Under the proximity event, selects one of several baseline value update procedures based on the magnitude of the difference. Thus, the present application effectively avoids the problem of failure to update the baseline value when the object is close to the capacitance sensing device for a long period of time, which may lead to misjudgment of the capacitance sensing device.

Abstract: A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

Abstract: A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

Abstract: A drive structure of a desktop robotic arm is disclosed, including a base and a turntable. The base is internally provided with a turntable drive motor and a turntable drive shaft, the turntable drive motor is drive-connected to the turntable drive shaft, and the turntable drive shaft is drive-connected to the turntable. The turntable is provided with an upper arm drive motor and a forearm drive motor. The turntable drive motor, the upper arm drive motor and the forearm drive motor are all servo motors with absolute value encoders. According to the drive structure of the desktop robotic arm, by using servo motors as the drive motors for controlling the turntable, an upper arm and a forearm, for which the absolute value encoders are correspondingly configured, control accuracy and driving power can be improved. Further, the present invention also discloses a desktop robotic arm and a robot.

Abstract: A method and apparatus are provided for limiting a B1 field used for magnetic resonance imaging (MRI). The techniques described herein reduce a waste of performance of the B1 field while ensuring patient safety and improving the MR imaging quality.