Abstract: A semiconductor device for reducing a switching loss includes a drain metal. A silicon substrate of a first conductive type is provided on the drain metal. An epitaxial layer of the first conductive type is provided on the silicon substrate of the first conductive type. A pillar of the first conductive type and a pillar of a second conductive type are arranged in the epitaxial layer of the first conductive type. A body region of the second conductive type is provided on a surface of each pillar. A heavily doped source region of the first conductive type and a heavily doped source region of the second conductive type are arranged in the body region of the second conductive type. A gate trench is formed in the pillar of the first conductive type. Discrete gate polycrystalline silicon is provided in the gate trench.

Abstract: A semiconductor device for reducing a switching loss includes a drain metal. A silicon substrate of a first conductive type is provided on the drain metal. An epitaxial layer of the first conductive type is provided on the silicon substrate of the first conductive type. A pillar of the first conductive type and a pillar of a second conductive type are arranged in the epitaxial layer of the first conductive type. A body region of the second conductive type is provided on a surface of each pillar. A heavily doped source region of the first conductive type and a heavily doped source region of the second conductive type are arranged in the body region of the second conductive type. A gate trench is formed in the pillar of the first conductive type. Discrete gate polycrystalline silicon is provided in the gate trench.

Abstract: A silicon carbide diode having a high surge current capability, and including a semiconductor base plate. The semiconductor base plate includes an N-type silicon carbide substrate and an N-type silicon carbide epitaxial layer located on the N-type silicon carbide substrate. The upper portion of the N-type silicon carbide epitaxial layer is provided with a plurality of P-type well regions. The N-type high resistance region is provided under the P-type well region or on the lower surface of the P-type well region. The resistivity of the N-type high resistance region is greater than the resistivity of the N-type silicon carbide epitaxial layer. The N-type high resistance region is provided under the P-type well region, and a plurality of grooves are provided in the P-type well region or a plurality of block-shaped P-type regions uniformly arranged at intervals are provided in the N-type high resistance region.

Abstract: A silicon carbide diode having a high surge current capability, and including a semiconductor base plate. The semiconductor base plate includes an N-type silicon carbide substrate and an N-type silicon carbide epitaxial layer located on the N-type silicon carbide substrate. The upper portion of the N-type silicon carbide epitaxial layer is provided with a plurality of P-type well regions. The N-type high resistance region is provided under the P-type well region or on the lower surface of the P-type well region. The resistivity of the N-type high resistance region is greater than the resistivity of the N-type silicon carbide epitaxial layer. The N-type high resistance region is provided under the P-type well region, and a plurality of grooves are provided in the P-type well region or a plurality of block-shaped P-type regions uniformly arranged at intervals are provided in the N-type high resistance region.

Abstract: The present disclosure discloses a data transmission system of safety patrol on construction project site based on “internet plus” according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the const

Abstract: A multi-function high-frequency tool for an endoscope, comprising an insert portion and a handle portion, the insert portion comprising an insulating tip, a first electrode having a needle-knife function, a second electrode having an IT-knife function, and a spray head; the handle portion comprising a first slider, a connector, an injection connector, and a second slider. The second electrode has a hollow structure, and the first electrode extends through the second electrode; the proximal end of the first electrode is fixedly connected by means of a mandrel connecting member to the distal end of a mandrel; the proximal end of the mandrel is connected to the first slider of the handle portion, and moves axially on the handle portion by means of the first slider, thereby causing the first electrode to expose from/retract into the second electrode.

Abstract: The present disclosure discloses a data transmission system of safety patrol on construction project site based on “internet plus” according to the present disclosure comprises a patrol apparatus for collecting and transmitting an on-site panorama image, 3D point cloud data of the scene, location information and construction on-site data; a cloud computing platform for receiving the on-site panorama image, the 3D point cloud data of the scene, the location information and the construction on-site data, and reconstructing a 3D model of a patrol scene based on the panorama images, the 3D point cloud data of the scene, the location information and the construction on-site data; a safety patrol data terminal providing inspection/browse to construction site; the present disclosure enable users to patrol in construction project remotely, reducing workload of the safety production management personnel, improving patrol efficiency, enhancing the intuitive reality of the patrol and the safety patrol level of the const

Abstract: A multi-function high-frequency tool for an endoscope, comprising an insert portion and a handle portion, the insert portion comprising an insulating tip, a first electrode having a needle-knife function, a second electrode having an IT-knife function, and a spray head; the handle portion comprising a first slider, a connector, an injection connector, and a second slider. The second electrode has a hollow structure, and the first electrode extends through the second electrode; the proximal end of the first electrode is fixedly connected by means of a mandrel connecting member to the distal end of a mandrel; the proximal end of the mandrel is connected to the first slider of the handle portion, and moves axially on the handle portion by means of the first slider, thereby causing the first electrode to expose from/retract into the second electrode.

Abstract: A scheduling method and system for high speed uplink packet access which comprises the following two-level scheduling: a first level scheduling for distributing the target rise over thermal (RoT) of each user equipment (UE); and a second level scheduling for tracking the assigned to target RoT via transmitting a relative authority instruction, according to the current authority and channel quality of the UE.

Abstract: The disclosure discloses a method and a system for scheduling frequency physical resources based on frequency hopping. The method comprises: in two time slots of frequency hopping transmission, reserving frequency physical resources for an activated semi-persistent scheduling new transmission user with a transmission period reached and a retransmission user; obtaining a scheduling type of a user required for scheduling, and according to an occupancy situation of the frequency physical resources, obtaining corresponding available frequency physical resources when employing a frequency-selective scheduling type and a non-frequency-selective scheduling type; and according to the scheduling type of the user required for scheduling, searching for corresponding available frequency physical resources, and allocating the frequency physical resources to a frequency-selective scheduling user and a non-frequency-selective scheduling user simultaneously during one scheduling period.

Abstract: The disclosure discloses a method and a system for scheduling frequency physical resources based on frequency hopping. The method comprises: in two time slots of frequency hopping transmission, reserving frequency physical resources for an activated semi-persistent scheduling new transmission user with a transmission period reached and a retransmission user; obtaining a scheduling type of a user required for scheduling, and according to an occupancy situation of the frequency physical resources, obtaining corresponding available frequency physical resources when employing a frequency-selective scheduling type and a non-frequency-selective scheduling type; and according to the scheduling type of the user required for scheduling, searching for corresponding available frequency physical resources, and allocating the frequency physical resources to a frequency-selective scheduling user and a non-frequency-selective scheduling user simultaneously during one scheduling period.

Abstract: A scheduling method and system for high speed uplink packet access which comprises the following two-level scheduling: a first level scheduling for distributing the target rise over thermal (RoT) of each user equipment (UE); and a second level scheduling for tracking the assigned to target RoT via transmitting a relative authority instruction, according to the current authority and channel quality of the UE.