1338 results about "Service condition" patented technology

The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

The invention discloses a power demand side monitoring system and method. A cloud computing technology is used, power consumption information forms a large power information resource pool, the power load is accurately predicted, the energy-saving potential is accurately mined, and a powerful guarantee is provided for reasonable, ordered, high-efficiency and safe power utilization, so that the aim of continuously utilizing the power is fulfilled. The system comprises a user layer, a data layer, a service layer and a monitoring layer, wherein the user layer is used for dividing the energy-saving method of the whole distribution system according to the industry difference; the data layer is used for acquiring power user data of the user layer by employing an intelligent load control terminal; the service layer is used for processing the data acquired from the data layer by employing the cloud computing and big data technology; and the monitoring layer is connected to the cloud of the service layer and is used for monitoring a power load in real time, counting the power consumption, checking and managing the power service condition and checking the energy-saving potential, so that the service type of the energy-saving equipment is determined.

The invention discloses a parking guidance and searching system for a parking lot. The system comprises a plurality of dynamic vehicle data acquisition devices, a data processing device, a dynamic parking guidance device and a vehicle searching device, wherein the dynamic vehicle data acquisition devices are respectively arranged at various intersections of the parking lot and are used for respectively acquiring the information of vehicles which pass through the intersections; the data processing device identifies the vehicles according to the acquired vehicle data at the various intersections and calculates and refreshes the area parking service conditions; the dynamic parking guidance device dynamically displays the parking information in real time according to the vehicle entrance and exit data acquired by an entrance and exit data acquisition device and guides the vehicles; and the vehicle searching device is used for displaying the vehicle parking position, the parking time and the nearest searching path, wherein the vehicle parking position, the parking time and the optimal fetching path information are displayed by swiping card by the owner. The parking guidance and searching system has the functions of parking guidance after vehicle entrance, dynamic vehicle azimuth identification, area parking electronic map display, convenient and rapid vehicle searching and the like.

The invention discloses a method and a system of adjusting resources of a virtual machine. The method comprises the following steps of obtaining service condition information of the resources of the virtual machine; judging whether the resources of the virtual machine need to be adjusted according to a predetermined strategy and the service condition information; adjusting the resources of the virtual machine when determining to adjust the resources of the virtual machine. According to the method and the system, the resources can be dynamically and automatically adjusted according to the service condition of the resources of the virtual machine, so that the influence of higher occupancy rate on normal operation of the virtual machine is avoided. The management cost and the maintenance cost are reduced, and the operating efficiency of the virtual machine is improved.

A system for transparent switching of management sessions utilizing in-band and out-of-band technologies is provided. The system provides continuous access to the managed system(s) by combining in-band tools, which generally require lower network bandwidth and provide better response time with less latency when the system under management is in-service, with out-of-band tools that provide continued access to the system under management when the network interface or operating system become unstable or the system in placed by an operator or falls unexpectedly to an out-of-service condition.

The invention relates to a parking guide management system which comprises a license number extraction module, a parking stall condition acquisition module, a wireless sensing network and a management center. The license number extraction module acquires and processes vehicular images to extract vehicular license numbers, and sends the vehicular license numbers to the management center. The parking stall condition acquisition module acquires service conditions and parking stall positions of parking stalls in a parking lot and sends the acquired service conditions and the acquired parking stall positions to the management center through the wireless sensing network. The management center receives the license numbers, controls a barrier to open for vehicles to access, records vehicle access time, receives the service conditions and positions of the parking stalls to recommend free parking stalls for drivers and provide parking guide information, and charges the vehicles according to the vehicle access time. By the aid of the parking guide management system, drivers passing through the barrier do not need to open vehicular windows to take and swipe cards, manual random vehicle guide for parking is not needed, parking is simple and quick, parking time is greatly saved, workers are reduced, parking efficiency is improved for the drivers, and service efficiency of the parking lot is improved.

Determining the degree of satisfaction of a user of network services quantitatively is difficult. A service quality management model defining means for defining the service condition and network depending relation and evaluation conditions, a means for storing the model in a DB, a service condition monitoring means for monitoring the transition of the service condition, and a service quality calculating and evaluating means for calculating service availability and executing special service maintaining and relieving measures are provided.

The invention relates to a material in-situ detection device and method under multi-load multi-physical-field coupling service conditions, and belongs to the field of precise scientific instruments. The material in-situ detection device is composed of a precise six-degrees-of-freedom composite load loading module, a precise torsion module, a precise indentation module, a clamp module and a control module which work together to complete a composite-load multi-physical-field coupling experiment, a digital speckle strain measurement and infrared thermal imaging module and a microscope observation module are integrated, and in-situ observation and quantitative characterization are carried out on material deformation behaviors and damage mechanism phenomena in a composite-load multi-physical-field loading process. The device and the method have the advantages that the composite-load loading can be realized, and a novel loading method such as 'cantilever type pure bending, cantilever type tensile / compression-torsion, and cantilever type bending-torsion' is carried out. Silicon nitride ceramic heating sheets, Peltier tiles and current loading are used for achieving simulation of cold / hot-electricity and other multiple physical fields, and an improvement innovative experimental testing method is provided for material micromechanical property tests close to the serving conditions.

A gas fractionalization apparatus and methods for providing oxygen rich air to patients are disclosed. The apparatus comprises a variable output compressor, a PSA unit, a control system, and one or more pressure sensing devices. Pressure of the oxygen rich gas is maintained within a selected window by adjusting the output of the compressor in response to changes in the pressure of the oxygen rich gas. Methods of feedback control are further provided for calibration of the compressor under factory and in-service conditions, as well as under high-altitude conditions. Methods for providing diagnostic estimates and alarms of time to service are further provided.

The invention relates to a high-speed high-temperature multifunctional friction and abrasion tester which is especially applicable to simulating the service conditions of the sealed pairs of turbojet engines and solves the problems that the friction pairs in the prior art can not meet the needs of high speed (over 100m / s) and high temperature (up to 1200DEG C) in the aspects of motion line speed and experiment temperature and can not simulate the high-speed high-temperature friction and abrasion conditions of the gas path sealing of the turbojet engines and the like. The tester is provided with a rotation main shaft, a rotation disc, a numerical control sliding table and heating devices, wherein the rotation disc is arranged on the rotation main shaft, a rotation sample is arranged on therotation disc, the numerical control sliding table is arranged at one side of the rotation main shaft, a translation sample is arranged on the numerical control sliding table and is opposite to the rotation sample to form a friction pair; and the heating devices are arranged at the side of the rotation sample and at the side of the translation sample. By adopting the invention, the high-speed stable rotation of the rotation main shaft of the tester and the rapid heating of surface of the friction pair sample can be realized.

The invention relates to a compressed-air energy-storage system. A three-position four-way valve is arranged in a pipeline of a compression part and an expansion part of the system and the flowing condition of air in the system is changed by utilizing the feature of change of a turn-on state of the three-position four-way valve, thus the variation of the manners of serial-connection and parallel-connection between a gas compressor and a turbine is realized, and the overall working efficiency is increased. With the adoption of the three-position four-way valve, on one hand, the overall flexibility of the compressed-air energy-storage system is improved, so that the operating of the system is more targeted, and the use of the compressed-air energy-storage system matched with various types of power stations is facilitated; and on the other hand, the service condition of turbomachinery is improved, and the optimized configuration of the turbomachinery according to the needs of energy storage and power generation can be realized.

A vehicle 2 performs fault diagnosis of the vehicle and calculation of the service life of parts using information obtained from sensors and control units, and when the necessity for repair work of the vehicle arises, makes a repair request to an information center 1. The information center 1 having received the repair request notifies terminals of outlets 4 of the repair request, to request the outlets 4 to transmit a service condition of their shop. The outlets 4 transmit the service conditions of the shop to the information center 1, in response to the repair request. The information center 1 relays the received service condition of each outlet 4 to the user, so that the user can select a desired service condition. The information center 1 then transmits contract completion information to the outlet 4 having proposed the service condition selected by the user, to mediate an agreement between the user and the outlet 4.

The invention relates to a method for sending secondary pre-code based on zero subspace technology in a cognitive radio MIMO (CR MIMO) system of time division duplex (TDD) used in primary user transmission. The method comprises the following steps: firstly, periodically perceiving transmitting signals of primary users and estimating a corresponding covariance matrix through a secondary transmitter; secondly, using the covariance matrix to estimate zero subspaces of channel matrixes from secondary users to all active primary users, and using an information criteria (such as MDL) to estimate the dimension number of the zero subspaces and determining the service conditions of space sub channels; and finally, using the acquired zero subspaces as pre-code matrixes of secondary transmission, wherein the transmission method fully eliminates the interference of the secondary transmission with the primary users. The provided scheme does not need instant channel information of the primary users, and nor the number of the known primary users. Therefore, the provided scheme is easy to be implemented in the practical CR MIMO system.

The invention discloses a method and a system for regulating and controlling a multi-core central processing unit (CPU). The method comprises the following steps of: setting CPU regulation and control modes which are used for regulating CPU startup quantity, CPU operation frequency and process migration in advance, wherein the CPU regulation and control modes comprise a predefined regulation and control mode and an automatic regulation and control mode; and performing switching on, switching off, frequency modulation and process migration control on CPU cores of the multi-core CPU in the CPU regulation and control modes through a bottom-layer core interface. According to the method and the system, the predefined regulation and control mode and the automatic regulation and control mode of the multi-core CPU are provided, so that mobile equipment can regulate on-and-off states, the frequency and process migration of the CPU automatically or in the predefined mode according to the service condition of the CPU of the mobile equipment; and by the method and the system, a user of the mobile equipment can select to input an instruction to regulate and control the operating condition of each CPU core of the multi-core CPU in different scenes, so that the processing capability of the multi-core CPU is improved or the aims of energy conservation and electricity saving are fulfilled.

The invention relates to an online material biaxial static-dynamic performance test platform under service temperature, belonging to the field of precision drive. The large-stroke biaxial synchronous identical-speed or synchronous different-speed displacement output is realized by virtue of four groups of piezoelectric actuators which are orthogonally distributed, and the biaxial static tensile test or dynamic fatigue test for a block-shaped material or a film material with a characteristic size being in a millimeter scale can be carried out under a high / low temperature service condition by combining with an embedded high temperature electrothermal alloy sheet / parr patch. The online material biaxial static-dynamic performance test platform is likely to use in conjunction with a scanning electron microscope with a relatively-large vacuum cavity or other microimaging device with an open-type carrier space, such as an optical microscope, an atomic power microscope and a high speed camera, so that the multimode biaxial static tensile test or the large-frequency-range biaxial dynamic fatigue test can be carried out, and the research for the microstructure evolution behavior and fatigue failure mechanism of various structural materials or functional materials under a complicated service condition such as a high / low temperature condition and a static-dynamic plane stress condition can be facilitated.

A system and method of device-aware service provisioning in a hybrid / integrated telecommunications network having a packet-switched network portion (PSN) and heterogeneous circuit-switched network (CSN) portions. A user profile is provided which partitions a service in three dimensions: a user-specific service part, a device-specific service part, and a combination part which specifies service conditions when an end-user uses a particular device or terminal. A common IP telephony Value-Added Services infrastructure is included wherein device-aware service triggers are provided for triggering appropriate service partitions of the user profile. Upon encountering a device-aware service trigger in a call control process, a service switching node queries the user profile and determines the service conditions associated with the particular device-specific service part to be invoked. Responsive to determining the service conditions, the service switching node instructs a service node to execute an appropriate Service Logic Program. Upon receiving a result or an indication thereof from the service node, the service switching node takes a corresponding service action.

The invention belongs to the technical field of Internet of things control, and provides a plug and play type intelligent housing system. The system comprises a control side, at least one intelligent housing controller and at least one household electric appliance. The control side is connected with the intelligent housing controllers through a wireless network, and is used for directly sending an operation instruction to the intelligent housing controllers. The intelligent housing controllers record work and rest time of a user and the service condition of the electric appliances in real time, statistic analysis is conducted based on the data, using behaviors and habits of the user are analyzed in cooperation with the current environment to achieve automatic housing intelligence. It is observed that the whole intelligent control does not need wiring and is achieved completely based on the controllers of all the household electric appliances; when the control function of the certain household electric appliance needs to be added, only the controller corresponding to the household electric appliance needs to be independently arranged; after the arrangement, access of operation instructions of the network receiving control side or other intelligent household controllers is directly carried out, and real plug and play is achieved.

The invention discloses a system and method for monitoring the service quality of content distribution networks, which are used for efficiently, accurately and timely monitoring the service quality of CDNs (Content Distribution Network) so as to effectively improve the service quality of the CDNs with various domain names. The invention adopts the technical scheme that test tasks are first established for the domain names added with CDN service, and the address and other information of a tested target resource are sent and distributed to the test points of all regions of the whole country through central scheduling. After the CDN service is provided, the test points adopt high-frequency concurrency test to analyze the target resource, and summarize and report test data. Then, an upper data analysis management module processes the reported data, obtains the service conditions of all nodes, and matches and alarms according to abnormal rules.

The invention discloses a virtual machine storage space management method. In the method, virtual storage free block information is directly acquired by a storage balloon agent module which is deployed in a virtual machine, and the acquired virtual storage free block information is transmitted to a storage balloon daemon process module which is deployed in a virtual machine monitoring unit layer; and the storage balloon daemon process module partially or totally releases a physical storage space corresponding to the virtual storage free block information and labels virtual storage blocks corresponding to the released physical storage space to be unavailable. The invention also discloses a corresponding system and physical host. Due to the method, the service condition of the virtual storage space can be acquired in real time, the massive reading / writing operation of a storage system can be avoided, and the method is suitable for virtual storage systems in a dynamic allocation format and a pre-allocation format.

The invention discloses a streaming media on demand method based on Hadoop and a virtual streaming media server cluster. The virtual streaming media server cluster is constructed on a virtual machine server cluster, and directly acquires stored streaming media file data from a Hadoop storage cluster to realize streaming media on demand. Particularly, in the method, a virtual machine server management node monitors the service conditions of memory and network bandwidth resources of the virtual streaming media server cluster in real time to realize the dynamic scheduling of virtual streaming media servers; hotspot file prefixes on the Hadoop storage cluster are deployed on the virtual streaming media servers according to a virtual streaming media server cluster balanced-deployment principle; requests of users are cached at intervals on the virtual streaming media servers according to a time sequence; and cache sizes on each virtual streaming media server are controlled and a virtual machine scheduling strategy is triggered according to the file reading bandwidth of the virtual streaming media server cluster for the Hadoop storage cluster.

The invention discloses an audio player device, an applied earphone of the device and an auto-control method. The earphone comprises an earphone body, an induction signal measuring terminal and an earphone plunger. Furthermore, the earphone plunger comprises a right sound channel pin, a left sound channel pin, an audio ground pin and a measuring pin. The audio player device comprises an earphone jack, an audio playing pin, a micro-processor, a memory, a detecting unit, a key-press and a timer. An earphone plunger pin is connected with an earphone jack correspondingly. The audio player device detects the induction signal through a measuring pin and judges the service condition of the earphone; the conking condition is controlled through the service condition of the earphone to achieve the purpose of saving electric power. The invention further provides a method of automatically controlling the audio player device of the earphone and the audio player device.

The invention discloses a method for preparing high temperature furnace used carbon / carbon composite material cylinders, which comprises the following steps: preparing carbon fiber rubberized cloth by dipping carbon fiber sheet in high-temperature phenolic resin of a rubber dip machine; controlling the winding tension of the carbon fiber rubberized cloth by a tension controller; pressurizing and solidifying the wound product after product winding; carbonizing the product; carrying out densification supplement according to the density of the product selectively; processing the product at a high temperature according to the service conditions of the high temperature furnace to adjust the comprehensive performance of the product; and mechanically processing the product according to a drawing to obtain a high temperature furnace used carbon / carbon composite material cylinder product. Adopting the processes, such as carbon cloth steak winding, pressurizing, solidifying and the like, the method has the advantages that the final density of the produced carbon / carbon composite material cylinder is larger than or equal to 1.25 g / cm<3>; the tensile strength of the plane surface is high; the size is basically unrestricted; no machine work is needed in the thickness direction; the performance-price ratio is superior; the cost of the carbon / carbon cylinder used for high temperature furnaces is remarkably reduced; the coherence of the processes is good; and the practicability is strong.

The invention discloses a method for allocating uplink dispatch request, comprising the following steps: determining the transmission circle period of each user dispatch request and uplink subframes for transmitting dispatch request in the transmission circle period by a base station according to service condition of users in a subdistrict; determining the dispatch request resource capable of being assigned of each uplink subframe used for transmitting dispatch request by using the total of the available dispatch request resources in the subdistrict and the number of the uplink subframes for transmitting request in the transmission circle period; assigning the dispatch request resource to users; sending the transmission circle period, the assigned dispatch request resource and the uplink subframes in which the dispatch request resource is located to the corresponding users. By adopting the invention, uplink dispatch request allocation can be realized in an LTE system.

The invention relates to a welding structure residual stress ultrasonic lossless measurement device and a method, in particular to a device and a method using ultrasonic for measuring the residual stress of a welding structure, belonging to the residual stress measurement field. The method aims at overcoming the problems of a traditional stress measurement method that work pieces are destroyed, time is consumed and the residual stress measurement can not be satisfied under the service condition of the welding structure. The two ends of a probe group of the invention are respectively connected with an impulse signal source and a signal receiving processing device which is connected with a display. And a microcontroller is embedded in the signal receiving processing device. In said method, the coordinate of a measured point is determined; the probe group emits impulse signals sent out from the impulse signal source into a work piece through a first critical refraction angle to generate critically refracted longitudinal waves, wherein, enveloping data are read by the signal receiving processing device and are discretized into digital signals and FIR filtering waves; total enveloping weight eigenvalue Mn is worked out; abnormal data are removed according to Brubbs criterion after one measured point is measured for a plurality of times, measuring position is changed for measuring again, and Mn and Mn+1 are worked out according to two measuring points to calculate the residual stress Delta of the work piece.

A severe service condition pressure reduction valve that is resistant to damage by debris carried by high-pressure process fluid stream and operates at acceptable noise levels includes a first stage annular member in the form of a tube or sleeve that is closely fitted into the axial annular opening of a disk stack trim or drag valve, the first stage member having a plurality of radial openings extending through the wall of the tube or sleeve that are aligned with, and correspond in radial and axial or longitudinal spacing to the flow paths in the disk stack valve. The external surface of the first stage member is provided with axially-spaced circumferential raised areas or rings that engage the internal surface of the disk stack annulus to prevent axial flow along the exterior surface of the sleeve.

The invention discloses a method for constructing a power model for a mobile terminal. The power information of the mobile terminal under various operations is acquired. The method includes the steps of counting the use state of the mobile terminal within a set period; and constructing a power model for the mobile terminal according to the use state and the power information of the mobile terminal. The invention further discloses a device for constructing the power model of the mobile terminal, which comprises an acquisition unit used for acquiring the power information of the mobile terminal under various operations, a counting unit used to count the use state of the mobile terminal within a set period, and a constructing unit used for constructing the power model of the mobile terminal according to the use state and the power information of the mobile terminal. The invention provides a corresponding power model according to the service condition of the mobile terminal to a user, so the invention can help designers design mobile terminals which can satisfy different endurance requirements of the users and can meet the experience needs of the users.

The invention discloses an intelligent power grid load testing and recognition method based on steady state and transient state characteristic joint matching. A typical intelligent power grid load is selected to conduct the data collection and feature analysis, and a load characteristic data base is established; user power consumption data are obtained through an intelligent electric meter in an intelligent power grid end-user circuit breaker layer; a collection data line is preprocessed, and power utilization switch events are detected; the switch events are conducted with clustering by utilizing clustering algorithm, and each cluster corresponds to a kind of start-stop behavior of an electricity load; the clustered switch events are conducted with load recognition; a recognition result is conducted with result checking by utilizing steady state harmonic current feature analysis, and the recognition result is updated. The intelligent power grid load testing and recognition method based on the steady state and transient state characteristic joint matching can detect the type and the service condition of load equipment on the basis that the normal operation of an intelligent power grid and normal use for a user are not affected, not only contributes to the load side management of the intelligent power grid, but also is beneficial to strengthening demand side management and has great significance for achieving optimizing configuration of electric power resources and the load.