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173results about How to "Reduce performance requirements" patented technology

Electric vehicle-mounted terminal based on cloud computing and using method thereof

The invention discloses an electric vehicle-mounted terminal based on cloud computing and a using method thereof. The electric vehicle-mounted terminal comprises a cloud client, a communication module, a human-machine interaction module, a positioning module, an identity identification module, an electric energy metering module, a charge / discharge control module and a CAN (controller area network) data interface. The cloud client is connected with the identity identification module, the positioning module, the human-machine interaction module, the communication module, the electric energy metering module, the charge / discharge control module and the CAN data interface respectively; a cloud server is connected with the communication module; an identity identification card and a vehicle identification card are both connected with the identity identification module; an electric energy meter is connected with the electric energy metering module; and a vehicle information system and a battery management system are both connected with the CAN data interface. Through the invention, the operation reliability of the vehicle-mounted terminal is improved; more personalized services are expanded; the structure and layout of the vehicle-mounted terminal are simplified, and the expandability of the vehicle-mounted terminal is improved; and the user does not worry about data loss, virus invasion and the like, and convenience is provided to the managers in finding the problems of the vehicle and battery in time.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1

High strength and toughness Q460E structural steel thick plate and production method thereof

The invention discloses a high strength and toughness Q460E structural steel thick plate. The thick plate comprises the following chemical components by weight percent: 0.10-0.17% of C, 0.20-0.45% of Si, 1.30-1.65% of Mn, 0.018% or less of P, 0.007% or less of S, 0.015-0.050% of Als, 0.025-0.060% of Nb, 0.055-0.070% of V, 0.015-0.025% of Ti and the balance Fe and residual elements. The carbon equivalent [Ceq = C+Mn / 6+(Cr+Mo+V) / 5+(Ni+Cu) / 15] is no more than 0.48. The production method comprises the following technologies: KR molten iron pretreatment, converter smelting, argon-blowing treatment, ladle furnace (LF) refining, vapor deposition (VD) refining, die casting, heating, controlled rolling and controlled cooling and stack cooling. On the basis of ensuring the original components of the high strength and toughness Q460E structural steel, the contents and ratio of the alloy elements in the Q460E steel, namely C, Mn and Nb are adjusted properly; the content of harmful elements in thesteel such as P and S which can influence the plasticity and toughness of the steel plate can be strictly controlled; the heating cycle of steel rolling is strictly controlled; and the rolling process adopts the ways of reducing the finish rolling temperature, increasing the cooling rate after rolling and perform stacking and slow cooling to the steel plate after rolling, thus each performance index of the steel plate meet the standard requirement.
Owner:NANYANG HANYE SPECIAL STEEL CO LTD

Weldable fine grain structural steel S355NL/S355NLZ35 steel plate and its production method

The invention discloses a weldable fine grain structural steel S355NL/S355NLZ35 steel plate, which comprises the following chemical components by wt%: 0.10-0.18of C, 0.20-0.45 of Si, 1.20-1.45 of Mn, less than or equal to 0.018 of P, less than or equal to 0.005 of S, 0.015-0.050 of Als, 0.010-0.055 of V, 0.005-0.025 of Ti, and the balance Fe and residual elements. The production method consists of: KR molten iron pretreatment, converter smelting, argon blowing treatment, LF (ladle furnace) refining, VD (vacuum degassing) refining, continuous casting, heating, controlled rolling and controlled cooling, stack cooling, and normalizing. According to the invention, content and proportion of C, Mn and Nb alloy elements are adjusted properly, and content of harmful elements in steel like P and S etc. influencing the plasticity and toughness of the steel plate is strictly controlled, and meanwhile, the heating system of steel rolling is strictly controlled. The rolling process employs a mode of lowering finish rolling temperature, speeding up cooling after rolling, and conducting steel plate stacking and slowing cooling after rolling, thus guaranteeing all performance indexes of the weldable fine grain structural steel S355NL/S355NLZ35 steel plate meeting the standard requirements.
Owner:NANYANG HANYE SPECIAL STEEL CO LTD

Canonical correlation analysis-based non-invasive load identification method

The present invention relates to the signal process and mode identification field, in particular to a canonical correlation analysis-based non-invasive load identification method. The canonical correlation analysis-based non-invasive load identification method is characterized by starting from the current data on a bus, processing a transient current during a load switching process, firstly extracting the multi-dimension waveform features of the transient current, secondly extracting the S-transform harmonic features of the transient current, and then using the correlation analysis to fuse themulti-dimension waveform features and the S-transform harmonic features, and finally using a SVM classifier to classify the loads, thereby realizing the load on-line decomposition. By using the canonical correlation analysis to fuse the multi-dimension transient current waveform features and the S-transform harmonic features, a final fused feature set has the better representational capacity, hasthe multi-dimension waveform feature identification advantage to the general loads, and also has the identification advantage to the similar loads in details. By using the canonical correlation analysis to fuse the two types of features, the non-invasive load identification method has the better identification feature to the loads of which the electrical properties are similar.
Owner:TIANJIN UNIV

Communication safety control method and device, first mobile terminal and mobile health device

The invention discloses a communication safety control method and device, a first mobile terminal and a mobile health device. The communication safety control method comprises the steps of generating first data related to an instruction to be transmitted; utilizing a first encryption key and the transmission serial number of a current data package of the first mobile terminal to generate second data; combining the first data and the second data to obtain a first transmission data package; sending the first transmission data package to the mobile health device to enable the mobile health device to compare third data with the second data, utilizing the first data to obtain and carry out the instruction when the third data are the same as the second data, and discarding the first data when the third data are not the same as the second data, wherein a second encryption key is obtained by calculating unique identifying information of a second mobile terminal bound with the mobile health device, and the third data are data generated by utilizing the second encryption key and the transmission serial number of the data package. According to the communication safety control method and device, the first mobile terminal and the mobile health device, the safety performance of the mobile health device is improved.
Owner:CHINA MOBILE COMM GRP CO LTD

Multi-legged robot joint control method and device and multi-legged robot

The embodiment of the invention discloses a multi-legged robot joint control method and device and a multi-legged robot. The method comprises: constructing a mapping matrix of expected foot bottom supporting force of a trunk stressed to all supporting legs; carrying out target priority division on the trunk stress, determining a weight matrix of each priority target, and constructing an optimization model of each priority target about the expected plantar supporting force based on the mapping matrix and the weight matrix; sequentially solving each optimization model to obtain a corresponding expected plantar supporting force; wherein the expected plantar supporting force corresponding to the current priority target serves as a solving basis of the expected plantar supporting force of the next priority target; calculating a joint moment of the support leg for joint control based on the plantar desired support force and the Jacobian matrix. According to the technical scheme, the big problem that in the prior art, no matter how to adjust the stress weight of the body, all components influence one another can be well solved, and for different gaits, the weight does not need to be adjusted when the gaits are changed.
Owner:UBTECH ROBOTICS CORP LTD

Superhigh-temperature crossed large-deformation forging method for improving structure uniformity of tool and mold steel

The invention relates to the field of forging of tool and mold steel, in particular to a superhigh-temperature crossed large-deformation forging method for improving the structure uniformity of tool and mold steel. The superhigh-temperature crossed large-deformation forging method for improving the structure uniformity of the tool and mold steel comprises the steps that firstly, superhigh-temperature demolding is conducted on a poured steel ingot belt liquid core; secondly, the steel ingot belt liquid core is placed in a insulated van for temperature uniformization and conveyed to a forging press, and three-direction crossed large-deformation forging is conducted on the steel ingot belt liquid core, so that branch crystals formed at the tail stage of solidification are sufficiently crushed, a large quantity of isometric crystal structures are formed, shrinkage cavities and looseness are eliminated, and dendritic segregation is relieved; and finally, conventional forging formation including upsetting, drawing-out and the like is conducted. According to the superhigh-temperature crossed large-deformation forging method for improving the structure uniformity of the tool and mold steel, a conventional method that forging is conducted after a die-cast steel ingot is completely solidified is broken, and a semi-solid structure with the steel ingot core having excellent fluidity and a huge surface and core temperature difference are created through superhigh-temperature demolding of the belt liquid core; forced feeding and pressure solidification are achieved through a three-direction crossed large-deformation method, and the developed branch crystals formed at the tail stage of the solidification of a tool and mold steel ingot are effectively crushed; central hole defects are overcome through welding, the problems of shrinkage cavities, looseness, segregation and the like are completely solved, and the metallurgical quality of products is improved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Multi-live load balancing method and system applied to openstack cloud platform

The invention discloses a multi-live load balancing method and system applied to an openstack cloud platform, and belongs to the field of cloud computing pass. The technical problem to be solved by the invention is how to meet the requirements of four-layer and seven-layer flow load balancing, avoide a single-point fault of the load balancing node, achieve the maximum utilization rate of the loadbalancing node performance, and improve the resource utilization rate of the physical server on the cloud platform; the adopted technical scheme is as follows: the method comprises the following steps: open-source LVS and NGINX are used for carrying out load balancing on four-layer flow and seven-layer flow respectively; through cooperation of an open source quagga virtual router of an ospf protocol and a physical switch supporting the ospf protocol, multi-path selection is carried out; a multi-active mode is realized, and communication with a virtual machine in a tenant vpc is performed through an external network shared by tenants on an openstack platform, so that cross-vpc load balancing is realized. The system adopts a micro-service software architecture and comprises a UI layer, a back-end micro-service layer, an atomic micro-service layer and a far-end SLB-AGENT layer.
Owner:山东汇贸电子口岸有限公司

E1 emulation realization method

The invention discloses an E1 emulation realization method, which relates to the field of network simulation and comprises the following steps of: performing protocol encapsulation on a direction, and performing serialization processing on received data to generate a real-time transport protocol value; assembling a time division multiplexing (TDM) payload into a frame, forming cache data packets by using the processed data, and finishing a corresponding description table; attaching packet headers to the TDM payload, generating control word information and real-time transport protocol information according to configuration, and performing encapsulation according to a protocol; performing clock domain adaptation on the processed data, finishing Ethernet media access control (MAC) processing, and transmitting Ethernet data by using a media independent interface (MII); performing protocol decapsulation on the direction, receiving and caching the Ethernet data, and finishing MAC layer processing; classifying and identifying the Ethernet data packets, extracting the payload and related control bytes, and counting state information; and performing clock recovery on a processed TDM payload code stream, and externally transmitting the processed TDM payload code stream. The method is relatively lower in cost; updating can be performed; and requirements on the performance of a central processing unit (CPU) are reduced, and clock recovery performance is improved.
Owner:FENGHUO COMM SCI & TECH CO LTD +1

Spatial distribution type star group design method

The invention belongs to the field of satellite communication, and discloses a spatial distribution type satellite group design method. The method comprises the following steps: formulating a satellite group common rail scheme; designing a topological structure; formulating a functional load and a division strategy; formulating an in-orbit configuration reconstruction and function reconstruction method; designing a satellite group flexible networking method; designing an inter-satellite high-speed data transmission method; designing a multi-satellite distributed synthetic coverage method; designing a multi-satellite distributed joint calculation method; designing a satellite group intelligent self-healing method; designing a rapid emergency adjustment method; and designing a star group scale expansion and star group cluster construction method. The method has the advantages that the orbital utilization efficiency is improved through multi-satellite common-orbit combination, the satellite group capacity is enhanced through high-speed interconnection transmission, quick response is achieved through on-orbit self-healing reconstruction, the coverage area is increased through a distributed array antenna, the on-satellite processing capacity is improved through distributed joint calculation, and the method is particularly suitable for design of space distributed satellite groups.
Owner:军事科学院系统工程研究院网络信息研究所

Method and apparatus for detecting data collection omission in traffic collection device

The invention discloses a method for detecting data collection omission in a traffic collection device and relates to an information security technology in the technical field of information. The method comprises the following steps: step 1 is discovery of omission of active IP data, and step 2 is discovery of omission of active domain name data. According to the invention, a DNS data source is used to supplement original data, and data which has the attribute of a computer room is extracted, and then a simulation request is performed, such that the performance demand for the simulation request is reduced, a more comprehensive simulation request is also provided, and discovered omission is more comprehensive and accurate. When the simulation request is performed, an http (get/post) requestis firstly performed, and then afterwards, data whose simulation request result return values are not within a reasonable scope is subjected to an https (get/post) request. Such a mode, compared to amode of performing http&https simulation requests on all data, can reduce the performance demand for the simulation request, and compared to a mode of only performing the http simulation request, canalso enhance comprehensiveness of the simulation request. According to the invention, the network supervision level can be effectively improved, and data missed by an information security managementsystem is discovered for analysis of omission reasons of the information security management system.
Owner:BEIJING ACT TECH DEV CO LTD

Centralized safety control method and device

The invention discloses a centralized safety control method and a centralized safety control device. The method comprises the steps as follows: a central node checks identity with the intelligent device after monitoring that some intelligent device accesses a local network, and stores a digital security certificate and a public key of the intelligent device after the check is passed, and adds the intelligent device in a safety equipment list; the central node generates a conversation key for the intelligent device and transmits the conversation key to the intelligent device; the central node transmits the safety equipment list, which has been encrypted by using the conversation key to the intelligent device based on an inquiring request of the intelligent device so that the intelligent device could select target equipment for conversation; the central node transfers the conversation information interacted by the intelligent device and the target equipment while the intelligent device initiates a conversation with the selected target equipment. The method and the device of the invention change a point-to-point security policy into centralized safety control, thereby reducing the performance requirement, operation complexity and cost of the intelligent device.
Owner:QINGDAO HAIER INTELLIGENT HOME TECH CO LTD

Anti-fog controlling method for refrigerator camera

The invention provides an anti-fog controlling method for a refrigerator camera. A refrigerator comprises a refrigerator body, a door body and a heating wire used for heating the camera. The anti-fog controlling method comprises the following steps that when the refrigerator starts to operate, the heating wire heats the camera with the power P1; when someone is detected to get close to the refrigerator and is about to open the refrigerator door body, the power of the heating wire is regulated and the heating wire heats the camera at the power P2; whether the refrigerator door body is open or not is detected; if the refrigerator door body is open, whether the refrigerator door body is closed or not is detected; if the refrigerator door body is closed, the power of the heating wire is regulated to recover to P1 to heat the camera; if the refrigerator door body is not closed, the camera temperature T1 and the environment temperature T2 are detected and compared; if T1 is greater than or equal to T2, the power of the heating wire is regulated to P1 to heat the camera; and if T1 is smaller than T2, the power of the heating wire is regulated to P3, and the camera is heated. The anti-fog controlling method for the refrigerator camera solves the problem that the shooting is vague and unclear due to the fogged camera, and can lower the energy consumption.
Owner:QINGDAO HAIER SPECIAL REFRIGERATOR CO LTD

Movie theatre multi-subtitle system based on psychological visual modulation display technology and method thereof

The invention discloses a movie theatre multi-subtitle system based on the psychological visual modulation display technology and a method thereof. The system comprises a display device and an auxiliary watching device which is matched with the display device. A group of composition bases comprising video contents and different languages of subtitles are arranged according to specific time and space and played by the display device, and the composition bases played in any time and areas are common component parts of multiple images or component parts of one image. Time domain or spatial domain amplitude modulation is performed on the composition bases played by the display device by the auxiliary watching device. The modulated information is finally integrated into the required images in the human brain via a user human eye visual system. According to the characteristics of constantly increasing refresh frequency and spatial resolution of the existing display devices and the limited resolution of human eyes under certain observation distance, the display device and the auxiliary watching device which is matched with the display device and can be customized according to the requirements are adopted so that the movie theatre multi-subtitle system is realized.
Owner:SHANGHAI JIAO TONG UNIV

Device and method for time delay and phase adjustment of antenna signal

The invention discloses a device and method for time delay and phase adjustment of an antenna signal. The method comprises the steps that a time delay adjustment value and a phase adjustment value at the current moment are obtained according to a time delay estimated value and a phase difference estimated value at the current moment and a time delay adjustment value and a phase adjustment value at the previous moment; an integral-multiple time delay value and a fractional-multiple time delay value are obtained through calculation according to the time delay adjustment value at the current moment; the phase of a sampling clock signal is adjusted according to the fractional-multiple time delay value, so that the sampling clock signal processed through fractional-multiple time delay is obtained; sampling is carried out on the antenna signal through the sampling clock signal processed through fractional-multiple time delay, so that a digital antenna signal processed through fractional-multiple time delay is obtained; the digital antenna signal processed through fractional-multiple time delay is adjusted through the integral-multiple time delay value, so that a digital antenna signal processed through time delay adjustment is obtained; a signal for secondary frequency mixing is obtained through the phase difference estimated value, and the signal for secondary frequency mixing is used for carrying out secondary frequency mixing on the digital antenna signal processed through time delay adjustment, so that an antenna signal processed through time delay and phase difference adjustment is obtained.
Owner:NAT ASTRONOMICAL OBSERVATORIES CHINESE ACAD OF SCI

Balance feed sampling receiver

The invention provides a balance feed sampling receiver. The balance feed sampling receiver comprises a sampling pulse signal generating circuit, a sample integral retaining circuit and a differential amplification circuit, wherein the sampling pulse signal generating circuit is used for shaping a double-end drive pulse signal to generate a pair of balanced picosecond sampling pulse signals, the front end of the sample integral retaining circuit is electrically connected to the sampling pulse signal generating circuit and the input end of a pulse signal to be sampled, the sample integral retaining circuit is used for carrying out downsampling on the pulse signal to be sampled through the balanced picosecond sampling pulse signals and carrying out underclocking and reconstructing on the base band waveform of the pulse signal to be sampled, the front end of the differential amplification circuit is electrically connected to the sampling integral retaining circuit, and the differential amplification circuit is used for carrying out differential amplification processing on the base band waveform of the reconstructed pulse signal to be sampled and obtaining a low-frequency base band signal widened in the time domain. The balance feed sampling receiver can integrally reconstruct the pulse signal to be sampled, the sampling bandwidth is high and adjustable, and the application requirement of an ultra wide band radar system is met.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Fuel cell engine system integration scheme

The invention relates to a fuel cell engine system integration scheme. The fuel cell engine system integration scheme comprises a galvanic pile package structure and a hydrogen treatment system, an exhaust system is distributed at one end of the galvanic pile package structure, and an intake system is distributed at the other end of the galvanic pile package structure. The hydrogen treatment system is distributed on one side of the lower end of the galvanic pile package structure, and a thermal management system is distributed on the other side of the lower end of the galvanic pile package structure. The fuel cell engine system integration scheme has the compact structure and can be used for A0-class vehicles; the safety performance is good, and the galvanic pile is packaged to ensure thatthe hydrogen leaked from the galvanic pile does not gather in an engine compartment; the engine can be started at a temperature of -25 DEG C. A cooling pipeline is highly integrated to reduce the capacity requirement of the whole vehicle water pump. The fuel cell engine system integration scheme has the protection level of IP67 through an upper air outlet and a lower air outlet, and the main function is to protect the galvanic pile from dust and rain, and ensure the normal operation of the galvanic pile.
Owner:WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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