Patents by Inventor Zhen Cao

Zhen Cao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12005495
    Abstract: A steel ladle drainage method is achieved by using a steel ladle structure. Vacuum interlayers are provided within an upper nozzle, an upper fixed plate, a lower fixed plate and a sliding plate of the steel ladle structure respectively. In the steel ladle drainage method provided by the present invention, a metal drainage agent is used to replace the drainage sand in the prior art, the metal drainage agent is melted by the liquid steel and deposited in the upper nozzle, the sliding plate with the vacuum interlayer and the upper nozzle with the vacuum interlayer have the insulation effect on the melted metal drainage agent. Moreover, through moving the sliding plate, the two pouring holes of the upper and lower fixed plates are connected with each other, the metal drainage agent enters the tundish through the pouring holes and the lower nozzle under the action of gravity.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: June 11, 2024
    Assignee: HEBEI VOCATIONAL UNIVERSITY OF INDUSTRY AND TECHNOLOGY
    Inventors: Lei Cao, Yanjun Meng, Zhen Cao, Weiqing Huang, Yongliang Shi, Bin Yang, Zhongqi Dong, Yanxia Liu, Min Chen, Shanshan Zhang
  • Patent number: 11979019
    Abstract: A breaker apparatus and an inverter system are configured to disconnect an electrical connection when a fault occurs in a protected circuit. The breaker apparatus is connected in series in a protected circuit, and is configured to disconnect the electrical connection when a fault occurs in the protected circuit. The breaker apparatus includes a first branch, and a second branch. The first branch includes an overcurrent-automatic-disconnection unit and a first current limiting unit that are connected in series, where the overcurrent-automatic-disconnection unit is configured to be automatically disconnected when a current flowing through the overcurrent-automatic-disconnection unit exceeds a breaking current threshold. The a second branch is configured to be open or closed under control of the controller.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 7, 2024
    Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
    Inventors: Xun Wang, Zhen Cao, Yongbing Gao
  • Publication number: 20240110900
    Abstract: A method for rapidly detecting pesticides based on thin-layer chromatography (TLC) and enzyme inhibition principles. The method includes the following steps: cutting a TLC plate into a rectangle, and using one end of the rectangle to contact a sample extract to form a pesticide residue separation area; covering the other end of the rectangle with a small piece cut from filter paper or glass fiber and fixing on a piece of enzyme inhibition reaction test paper to form a pesticide enrichment area; pasting a side of the enzyme inhibition reaction test paper away from the pesticide residue separation area with a piece of filter paper immobilized with a chromogenic agent to form a substrate color development area; and performing color reaction.
    Type: Application
    Filed: July 21, 2023
    Publication date: April 4, 2024
    Applicant: INSTITUTE OF QUALITY STANDARD AND TESTING TECHNOLOGY FOR AGRO-PRODUCTS, CAAS
    Inventors: Miao WANG, Jing WANG, Yunling SHAO, Yongxin SHE, Maojun JIN, Zhen CAO, Shanshan WANG, Lufei ZHENG, Hua SHAO, Fen JIN
  • Publication number: 20240103900
    Abstract: A disclosed method initializes a sideband management (SBM) bridge coupled to a system bus of an information handling system to identify an operating system (OS) domain resource, e.g., a hardware component or an OS resource, as a sideband-manageable resource. An OS-isolated environment, e.g., a virtual machine (VM) or rootless container, may then be associated with the SBM bridge. Thereafter, the OS domain resource may be managed from the OS-isolated environment via the SBM bridge. The system bus may be a peripheral component interconnect express (PCIe) bus and the SBM bridge may be a PCIe bridge. The SBM bridge may include a single root I/O virtualization (SR-IOV) interface and initializing the SBM bridge may include initializing, by the OS domain resource, a physical function (PF) of the SBM bridge. In such embodiments, associating the OS-isolated object with the SBM bridge may include assigning a virtual function (VF) of the SBM bridge to the OS-isolated object.
    Type: Application
    Filed: October 13, 2022
    Publication date: March 28, 2024
    Applicant: Dell Products L.P.
    Inventors: Bo WANG, Zhuo ZHANG, Zhen CAO, Haitao LUO
  • Publication number: 20240068078
    Abstract: A die steel with a high thermal diffusion coefficient includes 0.30-0.40 wt. % of C, 0.05-0.10 wt. % of Si, 2.50-3.40 wt. % of Mo, 0.01-0.05 wt. % of Nb, 0.30-0.50 wt. % of Co, 0.01-0.05 wt. % of RE, the rest is Fe and unavoidable impurities, wherein in the die steel, P?0.15 wt. %, S?0.025 wt. %. A preparation method of the die steel includes steps of melting, electroslag remelting, electroslag ingot annealing, forging, spheroidizing annealing, quenching and tempering.
    Type: Application
    Filed: March 9, 2022
    Publication date: February 29, 2024
    Inventors: Shuang LI, Zhen CAO, Zhen WANG, Yanlin Shi, Long LIU, Lulu ZHAO, Ziliang Wang, Yongliang Shi, Chenlong Wang, Yunchang Huo
  • Publication number: 20240063754
    Abstract: This application provides a power converter box used in a photovoltaic system. The power converter box includes at least two power converters, and the at least two power converters include one primary power converter and at least one secondary power converter. The primary power converter obtains status information of a photovoltaic substring corresponding to a secondary power converter, and sends, to an inverter by using a PLC communication module in the primary power converter, the status information of the photovoltaic substring corresponding to the secondary power converter and status information of a photovoltaic substring corresponding to the primary power converter. The primary power converter further receives, by using the PLC communication module in the primary power converter, control information sent by the inverter, controls, based on the control information, an output power of the photovoltaic substring corresponding to the primary power converter.
    Type: Application
    Filed: October 27, 2023
    Publication date: February 22, 2024
    Inventors: Zhen Cao, Dong Chen, Xiaofeng Yao, Jiebin Cheng, Guilei Gu
  • Patent number: 11910489
    Abstract: A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: February 20, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jianjian Zhu, Rahul Arvind Jadhav, Neng Yang, Zhen Cao, Fanzhao Wang
  • Patent number: 11824493
    Abstract: A power converter box and at least one junction box are integrated on a backplane of the photovoltaic module as a whole, and there is a cable for connecting the power converter and the junction box. In this case, relative to the conventional technology in which a junction box is independent of a power converter, a length of a cable used when the junction box and the power converter box are taken as a whole is shorter than a length of a cable used in the conventional technology. In this case, compared with the conventional technology in which a cable is connected to an independently placed power converter, the power converter only needs to establish a connection relationship by using a solder ribbon, a circuit board cable, and the like with low costs, so that production costs are low.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: November 21, 2023
    Assignee: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Zhen Cao, Guilei Gu, Su Zhou, Dong Chen, Lei Shi, Yanzhong Zhang
  • Publication number: 20230366055
    Abstract: A method for preparing a Bainite hot-working die, includes: 1) weighing and mixing alloy raw materials including: C: 0.50-0.60%, Si: 0.20-0.25%, Mn: 1.00-1.50%, W: 2.10-3.00%, Mo: 3.50-5.00%, V: 0.50-1.00%, Co: 0.60-1.10%, P?0.02%, rare earth (RE): 0.01-0.10%, (RE)/(S)>3.0, (RE)×(S)<0.004%, the balance being Fe and impurities; smelting, casting, annealing the alloy raw materials, to yield steel billets; 2) forging the steel billets to obtain Bainite die billets; 3) mechanically roughening the Bainite die billets, to yield die inserts; 4) tempering the die inserts, to yield hardened Bainite die inserts through secondary strengthening of Bainite; 5) mechanically machining the hardened Bainite die inserts to yield precisely sized die inserts; 6) nitriding the precisely sized die inserts; and 7) assembling the die inserts to yield a Bainite hot-working die.
    Type: Application
    Filed: July 25, 2023
    Publication date: November 16, 2023
    Inventors: Shuang LI, Zhen CAO, Zhen WANG, Long LIU, Yanlin SHI, Xiaocai YANG, Zhen YANG, Lun ZHANG, Yingli HUA, Mingmei XIA
  • Patent number: 11809925
    Abstract: A data processing method and apparatus, where one or more applications run in an operating system of a first device, there is a plurality of paths between the first device and a second device, and the paths correspond to the one or more applications. In a data receiving process, the one or more applications obtain data on the paths through a system call, and further obtain data in a plurality of packets from at least one path. In a data sending process, the one or more applications distribute data to corresponding paths through a system call.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: November 7, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Rahul Arvind Jadhav, K Anmol Mani Tejeswar Sarma, Zhen Cao
  • Publication number: 20230327543
    Abstract: A backfeed soft-start circuit for a photovoltaic inverter is provided. The backfeed soft-start circuit includes a plurality of branch switches. A solar photovoltaic array includes a plurality of photovoltaic modules, where the plurality of branch switches are in a one-to-one correspondence with the plurality of photovoltaic modules, and when the plurality of branch switches are turned on, the corresponding photovoltaic modules are connected to the backfeed soft-start circuit; and a primary switching switch. The branch switches is connected to a corresponding photovoltaic module, and the primary switching switch. The primary switching switch is turned on after the branch switch is turned on.
    Type: Application
    Filed: April 21, 2023
    Publication date: October 12, 2023
    Inventors: Zhen Cao, Lei Shi, Yunfeng Liu, Feng Chong, Hualong Fan, Jiajia He, Shaopan Hou, Jie Zhang
  • Publication number: 20230256505
    Abstract: A steel ladle drainage method, is achieved by using a steel ladle structure. Vacuum interlayers are provided within an upper nozzle, an upper fixed plate, alower fixed plate and a sliding plate of the steel ladle structure respectively. In the steel ladle drainage method provided by the present invention, a metal drainage agent is used to replace the drainage sand in the prior art, the metal drainage agent is melted by the liquid steel and deposited in the upper nozzle, the sliding plate with the vacuum interlayer and the upper nozzle with the vacuum interlayer have the insulation effect on the melted metal drainage agent, agent falling. Moreover, through moving the sliding plate, the two pouring holes of the upper and lower fixed plates are connectedwith each other, the metal drainage agent enters the tundish through the pouring holes and the lower nozzle under the action of gravity.
    Type: Application
    Filed: October 29, 2021
    Publication date: August 17, 2023
    Inventors: Lei Cao, Yanjun Meng, Zhen Cao, Weiqing Huang, Yongliang Shi, Bin Yang, Zhongqi Dong, Yanxia Liu, Min Chen, Shanshan Zhang
  • Patent number: 11726538
    Abstract: A method and a device are for power supply switchover in a power system, including two power supplies, each being connected to a bus through an incoming line. The power supply currently in operation is used as the main power supply and the other power supply is used as a backup power supply. Both the incoming line and the bus have three phases, and the lines are connected by their phases. In an embodiment, the method includes: determining whether there is at least one sound phase among the three phases after identifying a fault in the power system; and if there is, obtaining a power data on the sound phase before the main power supply is disconnected. The power data is usable to determine whether the backup power supply meets the condition for connecting in the quick mode after the main power supply is disconnected.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: August 15, 2023
    Assignee: Siemens Aktiengesellschaft
    Inventors: Zhen Cao, Feng Xian Cui, Ya Li Wang, Di Jun Gao, Lei Ming Qin
  • Patent number: 11722399
    Abstract: The present disclosure relates to apparatus and methods for route invalidation. In one example method, a common ancestor node of a network determines switching of a parent node of a node based on an update message received from the node using a new routing path established based on the switching of the parent node. The common ancestor node generates a No-Path message based on the update message. The No-Path message is for invalidating a previous routing path associated with the node on the switching of the parent node. The update message comprises at least one bit authorizing generation of the No-Path message by the common ancestor node. The at least one bit is placed in a transit information option in the update message.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: August 8, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Rahul Arvind Jadhav, Rabi Narayan Sahoo, Zhen Cao
  • Publication number: 20230229470
    Abstract: An information handling system may include a host system including at least one processor, and a network interface. The network interface may be configured to: receive, from a remote information handling system, data usable for deployment of an operating system (OS); store the data on a local storage device of the network interface; and mount a virtual storage resource accessible to the host system based on the local storage device, wherein the virtual storage resource includes the data, and wherein the host system is configured to boot from the virtual storage resource.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 20, 2023
    Applicant: Dell Products L.P.
    Inventors: Kai ZHOU, YungChin FANG, Zhuo ZHANG, Zhen CAO
  • Publication number: 20230223835
    Abstract: A serial-parallel converter protection system includes a controller, a drive, a first switching transistor, and a second switching transistor. An input terminal of a converter is connected to an output terminal of the converter through the first switching transistor. The output terminal of the converter is connected in parallel with the second switching transistor. When an output voltage of the converter is greater than a first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on. In some embodiments, when the output voltage of the converter is greater than the first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on, so that the converter is bypassed, thereby preventing a voltage and a current from impacting a component inside the converter.
    Type: Application
    Filed: February 27, 2023
    Publication date: July 13, 2023
    Applicant: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Zhen CAO, Dong CHEN, Xiaofeng YAO
  • Publication number: 20230208182
    Abstract: A power supply system and method. The power supply system includes: a first branch on which a first string is located, a second branch on which a second string is located, a transfer switch unit, a first voltage compensation unit, and a controller. The transfer switch unit is configured to connect the first voltage compensation unit to the first branch based on a voltage compensation enabling signal received from the controller, where the voltage compensation enabling signal is generated by the controller based on an operating state parameter of the first string and an operating state parameter of the second string. The first voltage compensation unit is configured to compensate for an output voltage of the first branch. Thus the system and method can prevent the voltage compensation unit from causing an unnecessary system loss in the branch requiring no voltage compensation, and reduce system costs.
    Type: Application
    Filed: February 17, 2023
    Publication date: June 29, 2023
    Applicant: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Dong CHEN, Zhen CAO, Yongquan LIU, Xiaofeng YAO
  • Patent number: 11671210
    Abstract: This application provide a retransmission control method, a communications interface, and an electronic device. When a transmit end transmits a first data packet to a receive end and does not receive an acknowledgement corresponding to the first data packet within a first RTO, the transmit end retransmits a second data packet based on a second RTO. The second data packet is a data packet transmitted by the transmit end after the transmit end transmits the first data packet. The second RTO is related to a receive timestamp of the acknowledgement corresponding to the first data packet and a transmit timestamp of the first data packet.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: June 6, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhen Cao, Kai Zheng, Ilpo Jarvinen, Markku Kojo
  • Patent number: 11647104
    Abstract: A data processing method includes receiving, by an operating system of a device, a start instruction from an application in the device that includes an identifier of a socket connection, where the application is a latency-insensitive application, calling, by the operating system according to the start instruction, a monitoring system in the operating system to monitor buffering of data of the socket connection in a kernel buffer, where the data of the socket connection is from an underlying protocol stack, and generating, by the monitoring system, a data readable identifier when a time interval between a current moment and a start moment is greater than or equal to a timeout duration, where the start moment is when the operating system receives the start instruction, and the data readable identifier indicates that the data of the socket connection is readable by the application.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: May 9, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Rahul Arvind Jadhav, K Anmol Mani Tejeswar Sarma, Zhen Cao
  • Patent number: 11639926
    Abstract: A detection device, the device comprising a sample liquid bearing device (300), test strips (200), a test strips bearing plate (100) and a signal acquisition positioning assisting device, wherein the sample liquid bearing device (300) comprises two or more samples cells (320) used for containing sample liquid, each of the test strips (200) at least comprises an identity information bearing part (250), a developing part (220) and a capillary part (210), the test strip bearing plate (100) is used for placing the test strips (200) in the same circular ring in a circumferential array radial manner, and the signal acquisition positioning assisting device is arranged on the test strip bearing plate and is used for positioning the test strips.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: May 2, 2023
    Assignee: Institute of Quality Standard and Testing Technology for Agro-Products, CAAS
    Inventors: Jing Wang, Zhen Cao, Hui Li