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563 results about "Domain controller" patented technology

On Microsoft Servers, a domain controller (DC) is a server computer that responds to security authentication requests (logging in, checking permissions, etc.) within a Windows domain. A domain is a concept introduced in Windows NT whereby a user may be granted access to a number of computer resources with the use of a single username and password combination.

SDN-based tiered routing path determination method and device

An embodiment of the invention provides an SDN-based tiered routing path determination method and device that are applied to an inter-domain controller and an intra-domain controller in a software-defined network; the SDN-based tiered routing path determination method comprises the following steps: a cross-domain request of a data flow sent by the intra-domain controller is obtained; according to the cross-domain request, a start point network domain and an intermediate network domain where a source node is positioned are determined; network performance information sent by the intra-domain controller is obtained; according to the network performance information and a plurality of preset cross-domain route selection strategies, an optimal routing path for transmitting the above data flow in all network domains is determined; according to the start point network domain and the intermediate network domain, boundary information of a first network domain and boundary information of a second network domain are determined and sent to the intra-domain controller, and the intra-domain controller is enabled to determine the optimal routing path for data transmission in the network domains. Via the SDN-based tiered routing path determination method and device, optimal design of a cross-domain routing path can be realized.
Owner:BEIJING UNIV OF POSTS & TELECOMM +1

Plug-and-play smart vehicle domain controller with redundant structure and method

ActiveCN109541987AImprove stabilityTo achieve the purpose of fault toleranceProgramme controlComputer controlMicrocontrollerComputer module
The invention relates to a plug-and-play smart vehicle domain controller with a redundant structure and a method. The domain controller is provided with a power supply redundancy structure, a microcontroller redundancy structure, a microprocessor redundancy structure, a communication redundancy structure, a data redundancy structure and a redundancy management module through a hardware redundancymethod. The microcontroller redundancy structure comprises more than two microcontroller MCUs which realize intelligent control and an auxiliary chip. The microprocessor redundancy structure is a multi-embedded microprocessor structure. The communication redundancy comprises multiple redundant buses. The data redundancy structure comprises more than two data storage units. The redundancy management module is used to isolate, switch and reconstruct input and output channels and signals of the domain controller when faults or attacks are discovered. The domain controller is connected with the whole vehicle to complete safe deployment, and is suitable for smart vehicles of the L3 class and above or link smart vehicles. Compared with the prior art, the domain controller provided by the invention has the advantages of high security, high reliability, high adaptability, good cross-platform versatility and the like.
Owner:TONGJI UNIV +1

Environment zone controller

InactiveCN101819435AUniform consumptionEnsure reasonable outputProgramme total factory controlTemperature controlAir volume
The invention relates to an environment zone controller which is used for controlling signals to be sent to executing mechanisms of an air conditioner fan, a curtain, a lamp, a new wind valve and the like through various acquired signals in an indoor environment so as to maintain environment parameters set by a user. The controller is also provided with an input port and an output port of digital quantity and simulating quantity, an RS232 port, an RS485 port, and an RJ45 port carrying out data interaction with an upper computer; and control software is loaded on a hardware module, carries out signal acquisition on an environment sensor in the environment zone through the input port of digital quantity and simulating quantity, at least comprises a temperature control module, an optical control module and an air quality control module, and controls the signals to be sent to the executing mechanisms of the air conditioner fan, the curtain, the lamp, the new wind valve and the like by the temperature control module, the optical control module and the air quality control module according to various acquired signals so as to maintain the environment parameters set by the user. The invention can start one part of functions according to different zones, such as subsystems of a new wind quantity control system and the like.
Owner:SHANGHAI RES INST OF BUILDING SCI CO LTD +1

Wireless access controller deployment method based on SDN (Software Defined Network)

InactiveCN105915419APreserve the idea of ​​centralized controlOvercome the delay problem of processing concurrent requestsNetwork planningWide area networksExtensibilityAccess network
The invention discloses a wireless access controller deployment method based on an SDN (Software Defined Network), and belongs to the technical field of wireless communication networks. The deployment method comprises the following steps that: a plurality of access network domain controllers process flow table establishment or update requests of base stations or access points which are directly connected with the plurality of access network domain controllers; a global controller runs on a cloud platform to construct an event-based publishing and subscribing system, and is connected with the access network domain controllers to construct physically-distributed and logically-centralized wireless access controller deployment architecture; and the access network domain controllers communicate with management applications running on the access network domain controllers through a northbound protocol, and communicate with an underlying data surface through a southbound protocol. Through adoption of the wireless access controller deployment method, the problem of delay in concurrent request processing in centralized control of a conventional single controller is solved; the advantage of a centralized control thought of the SDN is kept; and global optimal scheduling can be performed. The deployment method has very high extensibility and robustness.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Power domain control system for electric car, and control method thereof

The invention discloses a power domain control system for an electric car. The power domain control system for the electric car comprises a power domain controller, a battery pack information acquisition system, a motor control system and other auxiliary devices; wherein the power domain controller integrates whole car control and battery management functions; the battery pack information acquisition system realizes battery pack information acquisition and high-pressure contactor drive functions, and comprises a high-pressure management module and a unit information acquisition module; and thepower domain controller is in communication with a motor controller through a power controller area network (CAN) bus, is in communication with an instrument and other domain controllers of the car through a whole car CAN bus, is in communication with a quick charging pile through a quick charging CAN bus, and is in communication with the battery pack information acquisition system and a chargerthrough a battery intranet CAN bus. According to the power domain control system for the electric car provided by the invention, the power domain system becomes three parts, namely, the domain controller, the battery pack information acquisition system and a motor drive system, so that the integration level of power domain software is improved, the design of the battery pack system is simplified,and the structure of the power domain system is optimized.
Owner:天津易鼎丰动力科技有限公司

3D (3-dimnesional) printing manufacturing method for PDC (primary domain controller) drill bit body

InactiveCN104353833AOvercome the problem of single structure formImprove performanceIncreasing energy efficiencyWear resistantLaser scanning
The invention relates to a 3D (3-dimnesional) printing manufacturing method for a PDC (primary domain controller) drill bit body. The method has the technical scheme of comprising the following steps that a 3D model of the PDC drill bit body is built; the 3D model is subjected to 2D (2-dimnesional) processing; a corresponding laser scanning path is generated according to a formed 2D pattern; multiple layers of metal material powder is uniformly paved on a material increasing manufacturing equipment platform; metal material powder on the processing platform is scanned according to the laser scanning path; the PDC drill bit body is separated from the surface of the processing platform in a line cutting mode; the drill bit body is subjected to various process processing such as wear-resistant layer spraying and welding on the drill bit body by using the technical requirement of the designed PDC drill bit body as the criterion; flaw detection and cleaning are carried out, and finally, the PDC drill bit body after the manufacturing completion is formed. The 3D printing manufacturing method has the beneficial effects that the problem of single structural form of the PDC drill bit body manufactured by adopting a traditional material decreasing manufacturing method is solved, meanwhile, the defects of the traditional machining and casting process are greatly overcome, the integral performance and the manufacturing efficiency of the PDC drill bit are improved, and the manufacturing cost is reduced.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
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