168results about How to "Taking into account reliability" patented technology

The invention discloses a man-machine identification method and system. The method comprises: when a registration request of a user is received, providing registration verification information which the user is requested to orally state; receiving voice data of the user, and establishing a voiceprint characteristic model for storage; when a login request of the user is received, providing login verification information which the user is requested to orally state; receiving voice data of the user, and establishing a voiceprint characteristic model, and comparing with the voiceprint characteristic model during registration of the user; and according to a comparison result, determining whether the user himself logs in. The man-machine identification method and system can improve declassification difficulties in man-machine identification.

The invention discloses a rapid broadcasting method MCAB (Multi-candidates-based adaptive Broadcast Algorithm) based on position information in a vehicular network. The method solves the problems that in a VANET, transmission of the broadcast information is greatly delayed and reliability is poor. According to the method, a plurality of vehicles are taken as candidate transmitting vehicles to reduce source point retransmittsion frequency, meanwhile the vehicles can select a broadcast mechanism which is adopted in a self-adaptive mode according to positions of the vehicles including crossings or road segments, accordingly the broadcast method has great flexibility, time delay is reduced and reliability is guaranteed. According to the method, broadcast is divided into crossing broadcast and single road segment broadcast, when the vehicles are located on the crossings or the road segments, absolute position information of the vehicles must be obtained in advance, so the fact that all the vehicles are provided with GPS navigation systems is required. The method is adopted based on the premise that the position information, the moving direction, the current speed, the accelerated speed, road segment IDs and other information can be obtained through the GPS navigated systems.

The invention relates to a load predication method of building air-conditioning equipment. According to a monitoring method, power utilization information of all air-conditioning equipment in a building can be collected in real time; environment temperatures and outdoor environment information of all the air-conditioning equipment are collected in real time; and the power utilization load of the air-conditioning equipment of the building is predicated according to collected historical power utilization and environment temperature information to obtain a power utilization curve of the building air-conditioning equipment.

A small current neutral grounding fault location method based on the direction of transient state reactive power is characterized in that change of voltage or current serves as a failure starting condition, and after the starting, the zero sequence voltage is taken as the participating voltage if a detection point can be used for detecting the zero sequence voltage and if not, the following steps are performed: 1, confirming the fault phase as per characteristics of three transient state line voltages, and 2, confirming the transient state line voltage including the fault message as per the type of the fault phase, taking the transient state line voltage as the participating voltage, confirming the characteristic frequency range, and further building a digital filter to filter the participating voltage and the zero sequence current signal, so as to obtain the component within the characteristic frequency range; and then confirming the direction of the reactive power of all the detection points through utilizing the components of participating voltage and the zero sequence current within the characteristic frequency range, so as to further confirm the fault section. According to the invention, the transient voltage and current signals as well as zero sequence voltage and line voltage are utilized at the same time, the positioning reliability is higher, the adaptability is stronger, quick direction protection for ground fault of all the voltage classes is applicable at the same time, and the protection speed and reliability are taken into consideration.

The invention discloses a disk array caching method for a virtual SSD and an SSD isomerous mirror image. The disk array caching method comprises the steps that a disk is logically divided into two parts, wherein the upper half part forms an RAID0 or RAID5 structure to serve as the virtual SSD so as to back up dirty data in a real SSD, the virtual SSD is in a log writing mode, a ram writing cache is set, and the lower half portion is assembled to be of different RAID structures according to needs of users, and is used as a data array so as to store cold data; an address mapping Hash locating table between a data disk and the cache of the real SSD is built; a timer is set so as to regularly write data cached in the ram writing cache of the virtual SSD into the virtual SSD; a request from an upper layer file system is received; for a reading request, when the reading request is not hit in the real SSD, data are read from the data array. The disk array caching method gives consideration to performance, reliability and cost.

The invention provides an auxiliary train protection system and an auxiliary train protection method based on Beidou navigation. The auxiliary train protection system comprises a GPS (Global Position System) satellite, a Beidou satellite, track positioning equipment arranged on a track, a Beidou-GPS double-module receiver, a vehicular computer, a train control center, a GSM-R (Global System for Mobile Communication-Railways) wireless network for realizing bidirectional communication with a train when the track positioning equipment is normal, wherein the Beidou-GPS double-module receiver and the vehicular computer are arranged on the train; the system can supply more accurate positioning information with the coordination of a track positioning system when the train is in normal operation; the system supplies Beidou-GPS double-module positioning information for the train in the condition that the track positioning equipment loses efficiency, and can communicate with the train by using the Beidou bidirectional communication function without dependence on any ground communication equipment. With the adoption of the auxiliary train protection system, the train is automatically decelerated and even braked in dangerous conditions, so that the normal operation of the train system can be ensured and the auxiliary train protection system is used as a final protection barrier of the train; the security of the train is improved on the basis that the reliability of train positioning information can be ensured.

A lithium ion secondary battery includes a positive electrode capable of absorbing and desorbing lithium ion, a negative electrode capable of absorbing and desorbing lithium ion, a porous film interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte: the porous film being adhered to a surface of at least one of the positive electrode and the negative electrode; the porous film including a filler and a resin binder; the resin binder content in the porous film being 1.5 to 8 parts by weight per 100 parts by weight of the filler; and the resin binder including an acrylonitrile unit, an acrylate unit, or a methacrylate unit.

The invention relates to a building air conditioning equipment load monitoring system. According to a monitoring method, power utilization equipment of each air conditioning equipment in a building can be acquired in real time, a temperature of an environment where each air conditioning equipment is positioned can be acquired in real time and according to the acquired historical power utilization and environment temperature information, power utilization load of the air conditioning equipment of the building is predicted to obtain a power utilization curve of the air conditioning equipment of the building. According to the monitoring system, scheduling information of a power distribution network also can be acquired in real time and by combining the power utilization curve of the air conditioning equipment of the building and the scheduling information of the power distribution network, a power supply strategy of the air conditioning equipment of the building is determined so as to meet the power utilization requirement of the air conditioning equipment of the building and the scheduling requirement of the power distribution network to the greatest degree; power utilization efficiency, power utilization experience of users of the building and reliability of the power distribution network of the building are improved to a great degree.

The invention relates to the electronic technical field, and especially relates to a screen lightening control method, device and electronic equipment, thus solving the technical problems that an existing lift-hand lightening detection mode is long in time delay; the novel method comprises the following steps: firstly obtaining an acceleration speed value waveform of the electronic equipment in the first preset time period; matching the acceleration speed value waveform with a preset waveform, wherein the preset waveform is the waveform corresponding to a condition in which the electronic equipment motion state satisfies the lightening conditions; determining whether to control the electronic equipment screen to enter the lightening state or not according to the matching result, i.e., a difference algorithm is not used to determine whether the electronic equipment motion state satisfies with the lightening conditions or not, yet the electronic equipment acceleration speed value waveform is compared with the preset waveform, thus determining whether the electronic equipment motion state satisfies with the lightening conditions or not. The novel screen lightening control method has fewer limits on sampling spot numbers, thus realizing the technical effect of reducing time delay.

The invention relates to the technical field of network communication, and particularly relates to a hybrid automatic repeat request-based data transmission method and system. The hybrid automatic repeat request-based data transmission method comprises a first step that a sending terminal splits to-be-sent data into multiple data packages, attaches a unique identifier to each data package, sends the data packages to a receiving terminal, and stores the data packages in a to-be-determined storage area; a second step that the receiving terminal checks the received data packages, and sends identifiers of data packages checked unsuccessfully to the receiving terminal; and a third step that the sending terminal extracts data packages to be retransmitted from the to-be-determined storage area according to the received identifiers, and sends the data packages to the receiving terminal. According to the hybrid automatic repeat request-based data transmission method and system, both real-time performance and reliability of data transmission are ensured due to adoption of an accurate retransmission mechanism.

The invention relates to the field of mechanism kinematics chains, and discloses a kinematics-chain isomorphism determination method based on number matrices. Components and kinematic pairs of kinematics chains are numbered, and the number matrices are generated; then kinematics-chain information is extracted; the number matrices are standardized, and the kinematic pairs and the components are renumbered; standardized number matrices are obtained, then respective standardized composite-hinge information and standardized kinematic-pair information of the kinematics chains are extracted, the standardized composite-hinge information, component information and the standardized kinematic-pair information are sequentially compared, if all thereof are the same, the kinematics chains are isomorphic, and otherwise, the kinematics chains are isomeric. According to the kinematics-chain isomorphism determination method based on the number matrices of the invention, both reliability and number labeling ability of determination are considered, calculation is simple, a calculation amount is less, and determination of correspondence relationships of components and kinematic pairs of isomorphic kinematics chains is realized at the same time.

The invention relates to a layered and distributed AC / DC (alternating current / direct current) coordination control system, and a layered and distributed AC / DC coordination control method. The system comprises AC / DC substations, coordination control main stations, and a coordination control central station, wherein the AC / DC substations acquire the operating state information of an AC transmission line and a DC transmission system and transmit the operating state information to the coordination control main stations, and receive coordination control commands sent from the coordination control main stations; the coordination control main stations calculate the total DC quantity required to be adjusted and perform power distribution for the DC substations, and distribute the power to the DC substations requiring regulation and control and upload the total DC adjustable quantity, the operating mode and the corresponding strategy table information to the coordination control central station; the coordination control central station collects the information uploaded by the coordination control main stations and receives commands from a control center and an on-line application, and switches the current strategy of a coordination control algorithm in the coordination control main stations, and starts or quits the coordination control function. The layered and distributed AC / DC coordination control system, and the layered and distributed AC / DC coordination control method can perform coordination control of the AC / DC paralleling operation power grid to improve the safe and stable characteristic of the system.

The invention relates to a combined type oscillation floater wave energy power generation device which comprises a power generation system and a fixing system. The fixing system comprises a snorkeling body, a fixing frame and a working platform, wherein the fixing frame is fixedly connected to the top of the snorkeling body, and the working platform is arranged on the top of the fixing frame. The power generation system comprises floaters, a hydraulic motor and four identical hydraulic transmission mechanisms and an electric generator, wherein each hydraulic transmission mechanism is arranged among three guide rods on each corner of the fixing frame. The floaters are arranged on the four corners of the fixing frame, each corner of the fixing frame is provided with three guide rods to be movably connected with the corresponding floater, and the guide rods are sleeved with the floaters. The hydraulic motor is arranged on the working platform. Each hydraulic transmission mechanism comprises a hydraulic cylinder, an oil pipe and an oil tank, wherein the hydraulic cylinder is located above the corresponding floater, the sleeve end of the hydraulic cylinder is fixedly connected to the corresponding three guide rods through a triangular frame, and a piston rod of the hydraulic cylinder is fixedly connected with the corresponding floater through a fixing disc. The combined type oscillation floater wave energy power generation device can output relatively-stable electric energy and is slightly affected by wave impact.

The invention discloses an air-cooled refrigerator and a control method thereof. The air-cooled refrigerator comprises a refrigerating chamber; a low humidity area, a high humidity area and a middle humidity area which are independent of one another are arranged inside the refrigerating chamber; a cold storage refrigeration circulation system comprises a refrigeration evaporator, a refrigeration draught fan, a middle humidity area air supply duct, a low humidity area air supply duct, a high humidity area air supply duct and an air return duct; under the action of the refrigeration draught fan, cold air in an evaporator cavity passes the middle humidity area, the low humidity area and the high humidity area corresponding to the middle humidity area air supply duct, the low humidity area air supply duct and the high humidity area air supply duct in a one-to-one mode; a low humidity area ventilation door and a high humidity area ventilation door are arranged inside the low humidity area air supply duct and the high humidity area air supply duct correspondingly; an air return inlet is formed in the back portion of the high humidity area; and a control board is arranged on the refrigerator. The air-cooled refrigerator and the control method thereof have the advantages that three humidity gradients are achieved for the refrigerating chamber, three areas meet the storage requirements of all food and are independent of one another, and food are not mutually affected.

The invention relates to a virtual network single link fault recovery method based on an SDN and a system thereof and belongs to the network virtualization technology field. The method comprises the following steps of (1), setting a redundancy link on a virtual network; (2) when the link is failed, checking usability of the redundancy link, and if the redundancy link is usable, using the redundancy link to replace the failed link; and (3) if the redundancy link can not be used, removing the failed link, recalculating a path, and using a SDN controller to issue a flow table and changing the link. The method and the system have advantages that virtual network single link fault recovery based on the SDN is realized and a single link fault which occupies the largest portion of virtual network faults can be rapidly processed.

The invention discloses a service function chain deployment method and device, electronic equipment and a storage medium, which are used for solving the technical problem that reliability and overhead cost cannot be considered at the same time in the existing VNF placement method. The method comprises the following steps: initializing bottom-layer network topology information and a service function chain SFC request; establishing a deployment cost optimization model by taking reliability and overhead cost weighted difference maximization as an optimization target according to the initialized underlying network topology information and the SFC request; solving the deployment cost optimization model according to a preset improved simulated annealing algorithm, and generating an SFC deployment scheme with an optimal weighted difference; and generating an initial path set according to the bottom-layer network topology information and the SFC deployment scheme, determining a target path from the initial path set, and outputting an optimal SFC deployment scheme based on a mapping relationship of preset resource equipment of the target path.

The invention discloses a robot navigation system which comprises a sensor module, a judgment module and a strategy control module. The sensor module is used for emitting distance information, receiving returned distance information, performing calculation according to the returned distance information, performing mapping and outputting position information of a robot. The judgment module is used for judging whether the robot is located in a safety region or not according to the position information of the robot. The strategy control module is used for controlling the robot to adopt a first operating strategy for movements when determining that the robot is located in the safety region, or controlling the robot to adopt a second operating strategy for movements when determining that the robot is located in a non-safety region. The invention further discloses a robot navigation method. The robot navigation system and the robot navigation method give consideration to the operating efficiency of the robot and the reliability for responding to a complex environment and improve the movement efficiency and safety of the robot.

The invention relates to an optimization configuration method for an automobile driving assistance system sensor. The method is performed on an environmental perception sensor. The method comprises the following steps of performing a uniform description on environmental information perception of a driving assistance system based on a typical application scene; establishing a multi-dimensional comprehensive evaluation model of a sensor system; establishing a sensor perception function model; and performing a screening optimization process on an alternative sensor and an alternative installationposition by use of a global search algorithm. According to the optimization configuration method for the automobile driving assistance system sensor, the screening optimization and configuration optimization of a key sensor in the automobile driving assistance system are realized by use of a computer-optimized solution method, and the problem of optimization configuration of the key sensor in a complicated part supply system is solved.

The invention discloses an active updating method, device and server for physical machines in an IaaS cloud system. The active updating method includes the following steps: obtaining historical fault data of each physical machine in the IaaS cloud system; performing analysis processing on the obtained historical fault data of the physical machines one by one and obtaining the distribution regularity of the historical fault data of each physical machine and predicting next-time fault data of a corresponding physical machine based on the obtained distribution regularity; and executing updating operations on a corresponding physical machine according to the prediction result. The active updating method for the physical machines in the IaaS cloud system performs analysis and modeling on the historical fault data of each physical machine so as to obtain the generation regularity of faults of the physical machines and predict a next-time fault generation points according to the obtained regularity and thus the updating time of the physical machines is adjusted dynamically. Compared with a method in which a fixed updating time is set or which only bases on the average value of historical fault data in the prior art, the method can better taking system overhead and cloud system reliability into consideration.

The invention discloses a multi-degree-of-freedom eccentric swing type wave power generation device and method. The multi-degree-of-freedom eccentric swing type wave power generation device comprisesan arc-shaped shell. An upper outer ring is mounted at the top of the arc-shaped shell, a top cover is mounted at the top of the upper outer ring, a lower base in the horizontal direction is mounted at the bottom of the arc-shaped shell, a gear frame is mounted on the lower base, and a generator, a driven shaft and a gear shaft are mounted on the gear frame in the vertical direction. An output shaft of the generator is connected with a bearing mounted on the lower base, and a generator gear capable of driving the generator to rotate is mounted on the output shaft of the generator. The arc-shaped shell of the power generation device is of a symmetrical structure, and the power generation device can capture wave energy of incoming waves in all directions, is not limited by wave directions, and is suitable for using in a random wave environment. According to the power generation method and the power generation device used by the same, gear commutation is adopted to convert the bidirectional swing of a swing arm into the unidirectional rotation of the generator without installing a plurality of generators, so that the structure is simplified, the size is reduced, the movement synchronization rate of different output ends is ensured, and the electrical power output is more stable.

The invention relates to a shared power bank device based on bus station photovoltaic power generation. The device is characterized by comprising a photovoltaic panel, a lithium battery pack for cascade utilization, a street lamp power source, a shared power bank box arranged in a bus station and an intelligent monitoring system. The photovoltaic panel, the lithium battery pack for cascade utilization and the street lamp power source are used in sequential order for providing electric energy for the shared power bank box and bus station loads; multiple power banks and charging lines are arranged in the shared power bank box. The photovoltaic panel is adopted for generating electricity, cascade utilization of lithium batteries is conducted to store energy, and the bus station is used as a borrowing and returning place for the shared power banks, so that borrowing and returning of the shared power banks are facilitated, and an environmental protection concept of energy saving, emission reduction and green sharing is embodied.

The present invention discloses a method of large-scale MIMO linear iterative detection under non-ideal channel. The method utilizes the incomplete Cholesky decomposition as the preprocessing part of the conjugate gradient iteration, combining the advantages of the two, so that the problem of reduced rate of convergence in the traditional conjugate gradient algorithm under non-ideal channel or in a expanded system.Furthermore, a dynamic threshold based on channel correlation coefficient and system scale is proposed as an important parameter of preprocessing, which makes the solution of the whole system well balanced between complexity and performance.

The invention discloses a power utilization information intelligent analysis system based on the Internet of Things technology. The system includes an intelligent electric meter, the intelligent electric meter is connected with the home-entry connection module. The intelligent electric meter is electrically connected with a plurality of electric appliances; the intelligent electric meter is connected with a voltage detection module, a current detection module and a harmonic detection module. The intelligent electric meter is connected with an electric quantity comparison module and a feedbackmodule. The electric quantity comparison module is connected with a historical monthly electricity consumption average value statistics module, a first threshold module and a current monthly real-timeelectricity consumption statistics module, and the electric quantity comparison module is also connected with an average value statistics module, a second threshold module and a current time period electricity consumption statistics module of historical monthly daily time period electricity consumption. The method has the beneficial effects that the electric charge can be saved for the user, theenergy can be effectively saved, the waste of electricity is reduced, and the rapidity and the reliability of judging whether the electricity load and the electricity consumption exceed the normal usecan be considered.

The invention is applicable to the field of a display device, and discloses a backboard module of the display device. The backboard module comprises a plastic backboard body with a concave cavity and a reinforcement rib structure mounted in the concave cavity. The concave cavity is equipped with an open cavity opening, a back cavity wall arranged opposite to the cavity opening, and side cavity walls circularly arranged at the peripheral edges of the back cavity wall. The reinforcement rib structure comprises back reinforcement ribs mounted on the back cavity wall and edge reinforcement ribs mounted on the side cavity wall. According to the backboard module, through adoption of the reinforcement effect of the reinforcement rib structure, the defect that the strength of the plastic backboard body is insufficient is made up; even if the plastic backboard body is applied to a large-size display device, the insufficient strength and deformation problems will not occur. Moreover, the reinforcement rib structure is mounted in the concave cavity of the plastic backboard body, therefore, the arrangement of the reinforcement rib structure will not influence the nice appearance effect of the plastic backboard body, and the strength reliability and nice appearance effect of the large-size display device are taken into effective consideration.

The invention relates to an assembly structure of a filter element assembly and a mounting base. The filter element assembly is provided with a mounting head fixed to the mounting base, the mounting base is internally provided with a rotary clamping part and a rotary groove, the rotary clamping part is provided with a clamping part, the mounting head is provided with a clamping cooperation part, and the rotary clamping part is provided with a first station and a second station in the process of reciprocatingly rotating in the rotary groove; when the rotary clamping part is at the first station, the clamping part and the clamping cooperation part are clamped and fixed to fix the mounting head on the mounting base; when the rotary clamping part is at the second station, the clamping part andthe clamping cooperation part are staggered and separated from each other to make the mounting head separated from the mounting base. When a user detaches the filter element assembly, the rotary clamping part is controlled to be rotated to the second station from the first station, the filter element assembly is separated from the mounting base, afterwards, a new filter element assembly is mounted in the mounting base, the rotary clamping part is controlled to be rotated to the first station from the second station, thus assembly of the new filter element assembly is completed, the operationis convenient, the reliability of the mounted filer element assembly is considered, and the problems of shedding, sealing failure and the like caused by misoperation of dismounting and mounting are solved.

The invention relates to a hierarchical monitoring method for a metro tunnel flood gate. A water protecting gate system and a field monitoring system are arranged at a junction of a specific metro station and a tunnel; a water protecting gate and monitoring equipment are connected with a near-end monitor console and a remote-end monitoring center which are arranged in the metro station respectively; the field monitoring system is used for monitoring whether the water level of the water protecting gate is abnormal or not; the remote-end monitoring center is connected with a signal system of a metro operation control center and the near-end monitor console of each metro station respectively and executes a hierarchical monitoring management program that: when the remote-end monitoring center acquires an abnormal condition of the water level detected by the field monitoring system of any metro station, the condition is reported to the signal system and linkage is formed; after tunnel clearance is determined, the water protecting gate is closed in a remote mode; when remote control cannot be normally executed, the near-end monitor console is authorized to execute near-end remote control closing operation; thus, timeliness and safety of operation of the system can be guaranteed.

The invention belongs to the field of power distribution network relay protection, relates to a low-resistance grounding system earth fault centralized protection new method and provides an earth fault centralized protection new method, which combines the existing zero-sequence over-current protection and phase comparison of zero-sequence current of outgoing lines and neutral points. After the protection is started, a centralized protection device directly controls the action of an outgoing line circuit breaker whose zero-sequence current amplitude exceeds an existing protection value; when the zero sequence current amplitudes of all outgoing lines are lower than the existing protection value, the centralized protection device compares phase information of the zero-sequence current of theoutgoing lines and the neutral points; when zero-sequence current phase of some outgoing line is more advanced by a certain phase than the zero-sequence current phase of some neutral point, the centralized protection device controls the outgoing line circuit breaker with the maximum zero-sequence current amplitude to act; if there are multiple outgoing lines whose zero-sequence current amplitudesare maximum, multiple outgoing line circuit breaker act; and if phase difference of the outgoing lines is within a certain range, it is judged that the fault is a bus grounding fault.

A gas turbine fuel oil metering method based on an electric pump comprises the following steps that a positive displacement pump is driven by an adjustable-speed motor to change the flow of fuel oil; an outlet of the positive displacement pump is connected with a throttling device and a pressure limiting device in parallel; a differential pressure measuring device is used for measuring the pressure difference of an inlet and an outlet of the throttling device; the opening pressure of the pressure limiting device is properly set, and the pressure limiting device is made to be closed in the gas turbine starting process and is opened after a gas turbine is started; in the starting process, the pressure limiting device is closed, and the flow of the fuel oil is precisely calculated through the flow area of the throttling device and the pressure difference of the inlet and the outlet of the throttling device; after the gas turbine is started, the pressure limiting device is opened, the rotating speed of the adjustable-speed motor is adjusted, and the flow of the fuel oil is metered in a common electric pump mode. The gas turbine fuel oil metering method has the advantages of being capable of being directly applied to a gas turbine fuel oil system and capable of being applied to a combustion chamber, a turbine and other component test equipment of the gas turbine. Reliability, cost and metering accuracy can be considered in the system, and the overall performance of the fuel oil system and even the gas turbine can be obviously improved.

The invention discloses a marginal cost theory-based power distribution network structure planning method, which mainly comprises the following steps of S10, determining all possible planning schemes to form a planning scheme set; S20, performing reliability evaluation on a certain planning scheme to be evaluated to obtain a reliability index of each load point, and calculating the annual outage cost of the scheme; S30, calculating the investment cost of the scheme, and converting the investment cost into a uniform annual value; S40, calculating normalized values of the outage cost and the investment cost according to loads respectively; S50, calculating a marginal cost performance ratio, and making a scheme acceptation and rejection decision according to a range where the marginal cost performance ratio is within; S60, repeating the steps S20 to S50 until all the planning schemes to be evaluated are evaluated, and determining an optimal planning scheme for a power distribution network according to the cost performance ratio of each scheme.