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1348 results about "External connection" patented technology

An external connection represents a link between a workbook and a particular external data source. It contains properties about the way that the application establishes the connection to the data source and retrieves the data, such as the type of data provider ( OLE DB , ODBC , and other data providers), a server name , security information,...

Core modules and electronic devices

A core module and an electronic device are provided. The core module comprises a housing component, a transducer device, a vibration panel, and a face attachment component. The housing component includes a core housing and a core cover plate covering an open end of the core housing. The core cover plate and the core housing cooperate to form a first cavity. The face attachment component and the housing component cooperate to form a second cavity. The transducer device is at least partially located in the first cavity. The vibration panel is at least partially located in the second cavity. The core cover plate is provided with a first avoidance hole allowing the vibration panel to be connected with the transducer device. The core module is provided with a channel connecting the second cavity with the outside of the core module.
Owner:SHENZHEN SHOKZ CO LTD

PCB element detection method and system, storage medium and computer equipment

The invention relates to the technical field of PCBs, and particularly discloses a PCB element detection method and system, a storage medium and computer equipment. The method comprises the following steps: firstly, acquiring welding spot appearance feature information and welding spot internal feature information of a single pin of a PCB element and a PCB, and then respectively acquiring a corresponding appearance connection feature index and a corresponding internal connection feature index according to the welding spot appearance feature information and the welding spot internal feature information; and calculating a welding spot connection quality index of each pin according to the appearance connection characteristic index and the internal connection characteristic index, and judging whether the welding spot connection index corresponding to at least one pin exceeds a preset value, if so, judging that the detection result of the PCB element is unqualified, and if not, judging that the detection result of the PCB element is qualified. The clear quality division facilitates quality control and product screening in the production process, and meanwhile, the quality standard of the connection between the PCB element and the PCB can be accurately judged.
Owner:深圳市塔联科技有限公司

Game machine

To provide a game machine that is improved regarding communication by a serial communication circuit between a main control section and a value control section.SOLUTION: A game machine comprises a main control section 161 for controlling a game, and a token number control section 171 for controlling a credit possessed by a player, wherein the token number control section 171 can be communicably connected to a CU control section 323 of a card unit 3 that is an external connection device. The main control section 161 and the token number control section 171 are microcomputers having the same specifications that have a first serial communication circuit SR1 and a second serial communication circuit SR2, wherein the main control section 161 communicates with the token number control section 171 by using the first serial communication circuit SR1, and the token number control section 171 communicates with the main control section 161 by using the second serial communication circuit SR2, and communicates with the CU control section 323 of the card unit 3 by using the first serial communication circuit SR1.SELECTED DRAWING: Figure 44
Owner:SANKYO CO LTD

Game machine

To provide a game machine that is improved regarding communication by a serial communication circuit between a main control section and a value control section.SOLUTION: A game machine comprises a main control section 161 for controlling a game, and a token number control section 171 for controlling a credit possessed by a player, wherein the token number control section 171 can be communicably connected to a CU control section 323 of a card unit 3 that is an external connection device. The main control section 161 and the token number control section 171 are microcomputers having the same specifications that have a first serial communication circuit SR1 and a second serial communication circuit SR2, wherein the main control section 161 communicates with the token number control section 171 by using the first serial communication circuit SR1, and the token number control section 171 communicates with the main control section 161 by using the second serial communication circuit SR2, and communicates with the CU control section 323 of the card unit 3 by using the first serial communication circuit SR1.SELECTED DRAWING: Figure 44
Owner:SANKYO CO LTD

Game machine

To provide a game machine that is improved regarding communication by a serial communication circuit between a main control section and a value control section.SOLUTION: A game machine comprises a main control section 161 for controlling a game, and a token number control section 171 for controlling a credit possessed by a player, wherein the token number control section 171 can be communicably connected to a CU control section 323 of a card unit 3 that is an external connection device. The main control section 161 and the token number control section 171 are microcomputers having the same specifications that have a first serial communication circuit SR1 and a second serial communication circuit SR2, wherein the main control section 161 communicates with the token number control section 171 by using the first serial communication circuit SR1, and the token number control section 171 communicates with the main control section 161 by using the second serial communication circuit SR2, and communicates with the CU control section 323 of the card unit 3 by using the first serial communication circuit SR1.SELECTED DRAWING: Figure 44
Owner:SANKYO CO LTD

Method and device for detecting illegal external connection of terminal and storage medium

The invention relates to the technical field of network security, in particular to a method and device for detecting illegal external connection of a terminal and a storage medium, and the method comprises the steps: obtaining all terminal equipment connected with a local area network, distinguishing authorized terminal equipment and unauthorized terminal equipment through authorization detection, and carrying out the risk grading of the authorized terminal equipment; the method comprises the following steps: generating an external connection behavior data set by combining client monitoring data, network layer monitoring data and intranet detection data, extracting key information such as an external connection target, access time, a protocol type and a port number, and dividing into pure intranet connection equipment, normal external connection equipment and unknown external connection equipment according to external connection permissions; inputting the log data of the unknown external connection equipment into the log anomaly detection model based on the Transform architecture, identifying an abnormal event, and calculating a log risk score; and if the log risk score exceeds a preset threshold, determining that the device is an illegal external connection device. According to the method, accurate detection of illegal external connection behaviors is realized, and the safety performance of a monitoring system is remarkably improved.
Owner:JIANGSU BAOWANGDA SOFTWARE TECH CO LTD

Temperature sensing assisted time synchronization maintaining method

The invention relates to a time synchronization maintaining method assisted by temperature sensing, and belongs to the technical field of time synchronization. The method comprises the following steps: for a network communication scene in which synchronous information interaction cannot be carried out between equipment due to a main clock fault or communication link interruption, considering the characteristic that the output frequency of an equipment clock crystal oscillator presents nonlinear dynamic time varying due to environment temperature change; constructing a time sequence prediction model based on the TimeNet neural network and suitable for the non-external connection; training the model by using clock parameter data and temperature information which are historically recorded; using the trained model to take the environment temperature information as the input of the model, and predicting the clock frequency offset of the slave node; and the clock phase offset of the slave node is calculated by using the predicted clock frequency offset and a frequency offset autoregressive state transition equation, and the slave node corrects a local clock and realizes clock self-holding with the master node by using the clock frequency offset and a clock phase offset value.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Game machine

To provide a game machine that is improved regarding communication by a serial communication circuit between a main control section and a value control section.SOLUTION: A game machine comprises a main control section 161 for controlling a game, and a token number control section 171 for controlling a credit possessed by a player, wherein the token number control section 171 can be communicably connected to a CU control section 323 of a card unit 3 that is an external connection device. The main control section 161 and the token number control section 171 are microcomputers having the same specifications that have a first serial communication circuit SR1 and a second serial communication circuit SR2, wherein the main control section 161 communicates with the token number control section 171 by using the first serial communication circuit SR1, and the token number control section 171 communicates with the main control section 161 by using the second serial communication circuit SR2, and communicates with the CU control section 323 of the card unit 3 by using the first serial communication circuit SR1.SELECTED DRAWING: Figure 44
Owner:SANKYO CO LTD

Game machine

To provide a game machine that is improved regarding communication by a serial communication circuit between a main control section and a value control section.SOLUTION: A game machine comprises a main control section 161 for controlling a game, and a token number control section 171 for controlling a credit possessed by a player, wherein the token number control section 171 can be communicably connected to a CU control section 323 of a card unit 3 that is an external connection device. The main control section 161 and the token number control section 171 are microcomputers having the same specifications that have a first serial communication circuit SR1 and a second serial communication circuit SR2, wherein the main control section 161 communicates with the token number control section 171 by using the first serial communication circuit SR1, and the token number control section 171 communicates with the main control section 161 by using the second serial communication circuit SR2, and communicates with the CU control section 323 of the card unit 3 by using the first serial communication circuit SR1.SELECTED DRAWING: Figure 44
Owner:SANKYO CO LTD

System and method for server based control

A system and method in a building or vehicle for an actuator operation in response to a sensor according to a control logic, the system comprising a router or a gateway communicating with a device associated with the sensor and a device associated with the actuator over in-building or in-vehicle networks, and an external Internet-connected control server associated with the control logic implementing a PID closed linear control loop and communicating with the router over external network for controlling the in-building or in-vehicle phenomenon. The sensor may be a microphone or a camera, and the system may include voice or image processing as part of the control logic. A redundancy is used by using multiple sensors or actuators, or by using multiple data paths over the building or vehicle internal or external communication. The networks may be wired or wireless, and may be BAN, PAN, LAN, WAN, or home networks.
Owner:SMART SPEAKER LLC

Dual interface electronic module with value-add component and manufacturing method thereof

The present invention refers to a dual interface electronic module for a smart card and to the fabrication method thereof. The dual interface electronic module comprises a contact plate for external connection, which includes at least one antenna electrical connector, and a multilayered PCB including a value-add component, for instance a display. The contact plate and the multilayered PCB are connected together by means of a plurality of interconnects at an interconnection interface; the contact plate has a first area in correspondence of the interconnection interface and the multilayered PCB has a second area in correspondence of the interconnection interface. The first area is larger than the second area, so as to define an excess portion and at least one portion of the at least one antenna electrical connector is placed on the excess portion so as to be exposed for being electrically connected to a corresponding antenna of the smart card. The present invention also refers to the smart card comprising such a dual interface electronic module and to the fabrication method thereof.
Owner:LINXENS HOLDING SAS

Illegal content detection system for display equipment terminal and use method of illegal content detection system

The invention relates to a violation content detection system for a display equipment terminal and a use method thereof, which are applied to the field of information processing, and the system comprises a violation multi-mode extraction module, a multi-mode violation content detection algorithm module, a violation content judgment module, display screen external connection management and control equipment and a display terminal for playing a video stream, after a display terminal receives a video stream, data in various modes can be processed and analyzed, including texts, audios, videos, high-dimensional semantics and paragraph information, so that quick and accurate detection of violation contents is realized, playing contents are automatically audited without manual intervention, and the playing efficiency is improved. The method comprises the following steps: detecting risk content of a display terminal, triggering preset risk management and control measures when the risk content is detected, and carrying out state monitoring on each USB port and HDMI port which are set to be in an access occupation state in the display terminal in an initial state so as to judge whether the USB port and the HDMI port are pulled out or not, so that safe use of equipment is ensured, and malicious access is prevented.
Owner:BEIJING HUAYUAN TECHNOLOGY CO LTD

Stacked chip architecture modeling method and stacked chip architecture modeling system

The invention provides a stacked chip architecture modeling method and a stacked chip architecture modeling system. The method comprises the following steps: dividing an on-chip chip to be modeled into a plurality of core particles; the method comprises the following steps of: modeling a chip by adopting a three-stage joint modeling mode, and respectively executing core size level modeling, medium level modeling and substrate level modeling; arranging the placement positions of the core particles according to the factors of the time sequence of the key path, the bus length and the super-long path; according to the connection relation between the interior and the exterior of the core particle, and according to the weights of the internal netlist and the external netlist of the core particle or user input information, optimizing the positions of the internal elements of the core particle, and adjusting the positions of the micro convex points mapped by the elements; and carrying out automatic wiring based on the arrangement position of each core particle, removing a network with conflicts in wiring, carrying out labyrinth wiring on an area in which wiring is removed, and searching an optimal wiring path. The system is used for implementing the method. The invention provides a one-stop chip design EDA tool, and the design precision of the chip can be improved.
Owner:ZHUHAI SILICON CORE TECHNOLOGY CO LTD

Alarm tool for illegal external connection of encrypted optical disc

The invention belongs to the technical field of informatization security and secrecy, and particularly relates to an encrypted optical disc illegal external connection alarm tool which comprises a recording and printing tool recorded in an optical disc in an encrypted mode and an internet detection module. And automatically associating a specific website after the recording and printing tool is opened, and judging that the compact disc is used illegally if the association is successful. According to the invention, information security management can be enhanced, the management efficiency is improved, the information security cost is reduced, comprehensive monitoring and timely alarm of the secret-related optical disk are realized, and the security and confidentiality of the secret-related information are greatly improved.
Owner:LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA

External connection bus bar and wiring module

An external connection bus bar to be connected to a storage element group having a plurality of storage elements and having an output electrode terminal for outputting electric power to an external circuit includes a main body portion to be connected to the output electrode terminal, an external connection terminal to be connected to an external circuit, and a circuit board connection portion to be soldered to a bus bar land provided on the circuit board. The external connection terminal is provided between the main body portion and the circuit board connection portion.
Owner:AUTONETWORKS TECH LTD +2

Automobile complex system bolt distribution optimization method and system, electronic equipment and storage medium

The invention discloses an automobile complex system bolt distribution optimization method and system, electronic equipment and a storage medium. The method belongs to the technical field of bolt distribution optimization, and comprises the following steps: acquiring external forces of all external connection points of a target vehicle complex system under various load conditions; building a twinning finite element model of the complex system, inputting an external force into the twinning finite element model, and calculating and solving to obtain an actual connection force of a bolt connection point; analyzing the size between the actual connection force and a preset target connection force, and if the actual connection force is greater than the target connection force, increasing the number of bolt connection points in the twin finite element model; performing space design optimization on the twinning finite element model, and optimizing the twinning finite element model; outputting the optimized twin finite element model to obtain the optimal distribution of the bolts of the complex system of the target vehicle; compared with a traditional trial and error method, simulation software is used for virtual analysis and optimization, the design period can be remarkably shortened, and the number of times of physical prototype manufacturing and testing is reduced.
Owner:JIANGLING MOTORS

System management method and device, storage medium and electronic equipment

The invention discloses a system management method and device, a storage medium and electronic equipment. The method comprises the following steps: under the condition that an operation state of a business system indicates that a channel integration layer of the business system needs to be subjected to disaster recovery backup switching, using a first channel integration layer subsystem to replace a second channel integration layer subsystem to receive a target business request; under the condition that the running state indicates that a product service layer of the business system needs to be subjected to disaster recovery backup switching, a first product service layer subsystem is used for replacing a second product service layer subsystem to process a target business request; and under the condition that the running state indicates that the external connection integration layer of the service system needs to be subjected to disaster recovery backup switching, the first external connection integration layer subsystem is used for replacing the second external connection integration layer subsystem to obtain target interaction data related to the target service request. The technical problem that the management efficiency of the system is low is solved.
Owner:CHINA CONSTR BANK CORP

Body-fitting intelligent motion control system and controller using same

The invention discloses an intelligent motion control system with a body, which comprises a system-on-chip, the system-on-chip is provided with a plurality of interfaces, the system-on-chip is integrated with a multi-core CPU and a graphics processor, the system-on-chip runs an NECRO real-time operating system, and the control system comprises a multi-mode acquisition unit for receiving environment information acquired by an external sensor; the large model processing unit is used for calculating a task instruction according to the environment information; the motion control unit is used for calculating the motion track and speed of each joint controller of the robot according to the task instruction, generating a motion instruction and issuing the motion instruction to the joint controllers of the robot, the CPU comprises a plurality of cores, each core is correspondingly connected with an EtherCAT network port, the EtherCAT network ports are used for being connected with the joint controllers of the robot, and the EtherCAT network ports are used for being connected with the joint controllers of the robot. And the CPU establishes a core of the CPU as a master station according to the external connection condition of the EtherCAT network port, and establishes a slave station at an interface of the joint controller. According to the control system, the plurality of master stations are adopted to control the joint controllers of the robot respectively, so that control is smoother.
Owner:ANHUI GUOXUN CORE MICROTECHNOLOGY CO LTD

Low-repetition-frequency spiral microcavity structure and design method

ActiveCN119620291Aavoid crosstalkLight transmission loss is smallOptical waveguide light guidePhotonic ChipLight beam
The invention discloses a low-repetition-frequency spiral microcavity structure and a design method, and belongs to the field of silicon-based integrated photon chips. The low-repetition-frequency spiral microcavity structure comprises a first spiral bent waveguide, a second spiral bent waveguide, an internal connection bent waveguide, an external connection bent waveguide and a bus waveguide. The curvature radius of each point of the internal connection bending waveguide changes along with the length and meets the Euler spiral equation, and the internal connection bending waveguide is used for connecting the starting points of the first spiral bending waveguide and the second spiral bending waveguide. The external connection bending waveguide is used for connecting the end points of the first spiral bending waveguide and the second spiral bending waveguide. The first spiral bent waveguide, the second spiral bent waveguide, the internal connection bent waveguide and the external connection bent waveguide form a closed spiral annular waveguide. A light beam transmitted in the bus waveguide is coupled into the spiral annular waveguide. The invention further discloses a design method of the low-repetition-frequency spiral microcavity structure. According to the invention, loss caused by high-order mode crosstalk and mode mismatch can be reduced, and the area utilization rate of a chip is improved.
Owner:BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA

MLO access system of multi-interface wireless network card

The utility model discloses an MLO access system of a multi-interface wireless network card, which is characterized in that the MLO access system comprises a plurality of MLO sockets and FPC (flexible printed circuit) flat cables connected among the sockets, the MLO sockets are respectively arranged on interface chips to be matched, the MLO sockets comprise input, output, time and data signals, and the FPCs are connected with the MLO sockets. The FPC flat cable is inserted into the MLO socket through the electric connection terminals at the two ends, the FPC flat cable and the MLO socket form a single-end wiring mode, and adjustment impedance of 50-70 ohms is achieved. According to the utility model, through the external connection of the MLO socket and the FPC flat cable, the application of the MLO technology in a multi-interface product is realized, the stability of the performance of the multi-interface product is ensured, the customization of the product is avoided, and the cost is reduced.
Owner:COMPEX (SUZHOU) CO LTD

Coil assembly for wireless power transmission and power transmission system

A coil assembly for wireless electrical power transmission includes a plurality of external connecting terminals, a power feeding coil, a resonant capacitor electrically connecting with the power feeding coil, and busbars each of which electrically connects between the external connecting terminals.
Owner:DENSO CORP

Detergent box assembly and washing machine

Provided is a detergent box assembly in an embodiment of the present disclosure, which includes an inner box for containing detergent, an outer box provided with an accommodating cavity for accommodating the inner box, a driving mechanism, and an external connection terminal detachably connected to the inner box so as to form an electrical connection with the inner box, where during an opening stroke of the inner box, the inner box can be driven to move outward from the accommodating cavity in the opening direction by the driving mechanism; the driving mechanism is capable of independently driving the external connection terminal to move in the opening direction relative to the inner box, so that the external connection terminal remains connected to the inner box; and when the inner box moves in the opening direction beyond its limit position of the opening stroke, the external connection terminal is restricted in the opening direction and thus disconnected from the inner box. The present disclosure also provides a corresponding washing machine. According to certain embodiments of the present disclosure, the structure of the detergent box assembly can be optimized, which enables the detergent box assembly to be structurally stable, easy to operate and / or prone to achievement of automatic opening.
Owner:BOSCH SIEMENS HAUSGERATE GMBH

Measurement assembly of guided wave radar level gauge with high-temperature and high-pressure sealed-compensation type

The present disclosure relates to the field of electronic measurements, and particularly to a measurement assembly of guided wave radar level gauge with high-temperature and high-pressure sealed-compensation type, includes an gauge isolation enclosure, and an upper sealing structure is mounted at a lower part of the gauge isolation enclosure, a heat dissipation section is mounted between the upper sealing structure and a middle sealing structure, and a lower sealing structure is mounted at a lower part of the middle sealing structure; a housing is disposed to sleeve the middle sealing structure, a flange is connected outside the housing, a guide cylinder is connected to a lower part of the housing, and a compensation structure and a support member are disposed in the guide cylinder. The present disclosure has the advantageous effect of adopting a multi-layer sealing design and a tightness verification design.
Owner:CNNC FUJIAN FUQING NUCLEAR POWER

Self-power-generation digital pressure reducing valve and pressure regulating method

The self-power-generation digital pressure reducing valve comprises a main valve and further comprises an electric pressure reducing guide valve, a water inlet of the electric pressure reducing guide valve is connected with a water inlet end of the main valve through a first pipeline, and a water outlet end of the main valve is connected with a water outlet of the electric pressure reducing guide valve through a second pipeline. A water outlet of the electric pressure reduction pilot valve is connected with a diaphragm upper cavity of the main valve control chamber through a third pipeline; the diaphragm lower cavity is connected with the outside through a fourth pipeline, a fifth pipeline is further connected between the water inlet end and the water outlet end of the main valve, and a hydroelectric generator is arranged on the fifth pipeline; the pressure detection devices are arranged in front of and behind the main valve; the controller is used for receiving detection signals of the pressure detection devices so as to control opening and closing of the electric pressure reduction pilot valve; and the hydroelectric generator is connected with the pressure detection device and the electric pressure reduction pilot valve. According to the digital pressure reducing valve, self power generation can be achieved, the power utilization requirement of electric equipment is met, and remote regulation and control can be achieved.
Owner:ZHUZHOU SOUTHERN VALVE +1

Hybrid bonded inverted memory-logic stack

Memory layers and a digital device layer are configured into a three-dimensional integrated circuit (IC) die stack. The digital device layer has a first surface (side) located closest to a cooling solution and the memory layers are located on a second surface (side) of the digital device layer opposite to the first surface (side) thereof. The cooling solution is adapted to receive and dissipate heat from the digital device layer and the memory layers. Through-silicon vias (TSV) running through the memory layers and to the digital device layer are used to interconnect the signal, control and power supply voltages to circuits in these layers. Some of the TSVs are used to couple to external connections of a memory stack device. The digital device layer may be a complex electronic device layer such as a microprocessor or microcontroller for improved high speed signal transfers.
Owner:ADVANCED MICRO DEVICES INC

Method for stamping paging seal, storage medium, electronic equipment and product

The invention relates to the technical field of electronic signatures, and particularly provides a method for stamping a paging seal, a storage medium, electronic equipment and a product, the method can comprise the following steps: determining coordinates of marking rectangles for stamping the paging seal in a PDF document, the marking rectangles comprising: a home page marking rectangle and a non-home page marking rectangle; based on the marked rectangle, coordinates of composite external connection frames of the paging seal are calculated, the composite external connection frames comprise a home page composite external connection frame and a non-home page composite external connection frame, and the composite external connection frames and the marked rectangle are the same in size; obtaining a translation matrix of the paging seal in a non-home page of the PDF document; and translating the paging seal in the non-homepage composite external frame according to the translation matrix to obtain a display result of the paging seal. According to some embodiments of the invention, the efficiency of stamping the perforation seal can be improved.
Owner:BEIJING CERTIFICATE AUTHORITY

Millimeter wave phased-array antenna PCB laminated structure and preparation method thereof

The invention relates to the technical field of communication equipment, and provides a millimeter wave phased-array antenna PCB laminated structure and a preparation method thereof. The millimeter wave phased array antenna PCB laminated structure comprises an array element layer, a digital control-power supply layer, a radio frequency power layer and a PCB bottom layer, the array element layer comprises a radiation patch layer, a coupling feed layer and a reference ground layer which are arranged in a stacked mode, the digital control-power supply layer comprises a first ground layer, a digital signal wiring layer and a power supply layer which are arranged in a stacked mode, a radio frequency power division network circuit is arranged on the radio frequency power division layer, and the PCB bottom layer, the radio frequency power division layer, the digital control-power supply layer and the array element layer are sequentially arranged in a stacked mode. And a second ground layer is arranged between the radio frequency power layer and the PCB bottom layer. The millimeter wave phased-array antenna PCB laminated structure provided by the invention has the advantages of small thickness, simple assembly, high reliability and the like. Through the multi-layer superposition design, the functional modules are integrated on one PCB, space utilization is optimized, the external connection problem in the traditional design is avoided, the assembly process is simplified, and the production efficiency is improved.
Owner:GUANGZHOU HAIGE COMMUNICATION GROUP INCORPORATED COMPANY

Electronic package and manufacturing method thereof

An electronic package is provided, in which an electronic element that is electrically connected to a plurality of conductive vias and a functional part that has a hollow area are disposed on a photonic die that has the plurality of conductive vias and at least one external connection portion, where a cladding layer covers the electronic element and the functional part, such that the external connection portion is exposed from the hollow area and the cladding layer for an optical fiber to insert into the hollow area and connect to the external connection portion, so as to achieve the purpose of optoelectronic integration.
Owner:SILICONWARE PRECISION IND CO LTD

Control method, device and system of T-connection direct-current transformer and storage medium

The invention relates to a T-connection direct current transformer control method, device and system, a computer readable storage medium and a computer program product. The T-connection direct-current transformer comprises n-phase direct-current conversion modules, and n is larger than or equal to 4. Each phase of DC conversion module comprises a bridge arm formed by connecting a plurality of energy conversion sub-module cascade structures and an electric reactor in series, and two groups of switches, and a common connection end of the two groups of switches connected in series is connected with a first end of the bridge arm; the external connection end of the DC conversion module is used for connecting the high-voltage end, the low-voltage end and the grounding end, and comprises a first end, a second end, a common connection end and a second end of the bridge arm after the two groups of switches are connected in series. The method comprises the following steps: receiving a commutation instruction; in the commutation period, the conduction state of the switch is switched, so that at least an i-phase direct current conversion module is conducted with the low-voltage end at the same moment; 2 < = i < = n-2. By adopting the method, the magnitude of the current which needs to be tolerated by each device can be reduced, so that the T-connection type direct-current transformer meets the requirement of high-capacity application.
Owner:THREE GORGES (BEIJING) RENEWABLE ENERGY RES INST CO LTD +1

Sectional material, power assisting device, connecting piece and photovoltaic tracking system

The utility model relates to the technical field of power assisting machinery of rotating shafts, in particular to a section bar, a power assisting device, a connecting piece and a photovoltaic tracking system.The section bar is suitable for manufacturing a shell of a power assisting unit, extends in the length direction and comprises a main body, the main body comprises a through cavity, and the through cavity is arranged in the length direction of the section bar and used for containing the power assisting unit; the cross section of the through cavity is circular; the outer convex part is arranged on one side of the main body, and the cavity wall of the through cavity is sunken towards the outer convex part to form a first through groove; the second through groove is formed in the groove wall of one side of the first through groove, and the second through groove is used for hooking a coil spring in the power assisting unit; the third through groove is formed in the groove wall of the other side of the first through groove, and the third through groove is used for being connected with a driven part in the power assisting unit. The utility model has the advantages that the process of manufacturing the shell by using the profile is simpler and more efficient, the processing efficiency is effectively improved, and the processing cost is reduced; the shell and the power assisting device can be conveniently and stably placed, and meanwhile the power assisting device can be conveniently connected with the outside.
Owner:SHANGHAI XINGYE MATERIALS TECH CO LTD