38results about How to "Meet system requirements" patented technology

The invention relates to the technical field of educational management and particularly discloses a school intelligent information management system and a school intelligent information management method. The school intelligent information management system comprises a client interaction module, an international synchronization module, a centralized management module and a history recording module, wherein the client interaction module is used for carrying out information interaction between the school intelligent information management system and a client and receiving a request of the client; the request comprises selection on language and application modes; the international synchronization module is used for carrying out language processing of languages; the centralized management module is used for carrying out sorting processing on different information in the request; and the history recording module is used for recording the different information subjected to sorting processing and storing the record. According to the invention, synchronization of student and teacher information management and synchronization of attendance management data are implemented, a time management function is added, and institutionalization, systematization, standardization and automation of a work flow of the school intelligent information management system are implemented.

The invention relates to a medical device, in particular to an orthopedic surgery navigation system which is used in a closed intramedullary nail for fracture recovery surgery. The orthopedic surgery navigation system includes a binocular stereo vision sensing device and markers, the binocular stereo vision sensing device includes: a computer with the main frequency of not less than 1G, a locator which is arranged on a locator support, two CCD cameras which are arranged in the locator and a dual-channel signal synchronizer which is connected with an image collection card, at least three active luminous diodes which are not positioned on a same straight line are arranged on the markers, wherein, an intramedullary nail is rigidly inserted and connected on one marker, and the other marker is rigidly inserted and connected with a special surgical electric drill. The invention aims at providing the orthopedic surgery navigation system and realizing the accurate positioning of the relative position relationship of a surgical tool and the lesion part of patients, so a surgeon can accurately and successfully drill a twist-locking hole of the intramedullary nail under the guidance of a screen of the computer.

The invention discloses a method for acquiring status information of a medium- and long-term channel of a communication system, and belongs to the field of wireless communication. The method comprises that: 1) a base station computes an uplink space-time covariance matrix according to the status information of an uplink channel of a frequency division duplex communication system; and 2) the base station converts the uplink space-time covariance matrix according to the reciprocity between the uplink channel and a downlink channel of the frequency division duplex communication system so as to obtain the status information of a downlink medium- and long-term channel. Compared with the prior art, the method for acquiring the status information of the medium- and long-term channel of the communication system reduces the complexity of channel measurement at a UE end and the feedback overhead in the communication system.

A new partial product bit generator is used to generate a partial product bit PPji. In some embodiments, the partial product bit generator generates the partial product bit PPji from intermediate signals that are able to be generated concurrently, for example in two levels of combinatorial logic. The partial product bit PPji is then able to be generated from the intermediate signal, for example in only one level of combinatorial logic. In such embodiments, a long series of combinatorial logic operations is not required.

The invention provides a reinforced root resistant waterproof roll. The reinforced root resistant waterproof roll, in parts by weight, consists of 2-5 parts of a fire retardant, 15-20 parts of mobility resistant plasticizer, 60-75 parts of polyvinyl chloride resin, 2-8 parts of epoxidized soybean oil, 1-5 parts of dibasic lead phosphite, 1-5 parts of tribasic lead phosphite, 2-8 parts of E-881 modified vinyl chloride-vinyl acetate copolymer resin and 1-5 parts of epoxy resin. The reinforced root resistant waterproof roll is relatively strong in impact resistance and corrosion resistance, and can meet requirements of an existing building vegetation system. The reinforced root resistant waterproof roll, in a process of using, is root resistant and good in waterproof effect; the reinforced root resistant waterproof roll, no matter in production and construction processes or use process, has the advantages of being free from pollution to environment, uniform in texture and long in service life.

The disclosed method discloses embedded type software application architecture (ETSAA) oriented to instrument equipment in multimedia category. The method is established based on a set of embedded type software application component library oriented to digitalized instrument equipment in multimedia category, especially a multimedia dedicated component library. The invention realizes service function flow of multimedia application system, and provides audio and video codec with powerful functions. In the method, a platform installation of embedded system of instrument equipment in multimedia category provides tools and environment support for fast developing. Since the said ETSAA oriented to instrument equipment in multimedia category is passed the functional validation, the invention shortens development cycle greatly, and reaches standardization, modularization, and reusability of system software.

A vehicle radar system includes a plurality of transmission sub-arrays, wherein the plurality of transmission sub-arrays are symmetrical with respect to a symmetry axis and the plurality of transmission sub-arrays are parallel to the symmetry axis. The vehicle radar system further includes a transmission power splitter which is coupled to the plurality of transmission sub-arrays for respectively applying a plurality of phases and a plurality of amplitudes corresponding to the plurality of transmission sub-arrays to the plurality of transmission sub-arrays; wherein among the plurality of transmission sub-arrays, a first transmission sub-array which is closest to the symmetry axis and a second transmission sub-array which is farthest from the symmetry axis have a phase difference between 120 degrees and 180 degrees. The vehicle radar system of the present invention can simultaneously meet the system requirements of the LCA system, the DOW system, the RCTA system and the BSD system, thereby reducing the production cost and the complexity in system integration.

The invention discloses a missile performance testing unit for a missile testing system, and relates to the technical field of missile testing devices. The missile performance testing unit comprises amissile performance testing unit box body, a second alternating current input interface is embedded in the missile performance testing unit box body, and the second alternating current input interface is connected with one power supply input end of a first DC-DC conversion circuit through a second power supply switch and a second switch power supply, the first path of the output end of the firstDC-DC conversion circuit is connected with the input end of a second power supply processing circuit, the second path of the output end of the first DC-DC conversion circuit is connected with the power input end of a cranking module, and a second direct current power socket is embedded in a turntable control unit box body. The missile performance test is completed by matching a computer measurement and control unit, a turntable control unit, the missile performance testing unit and an air source component, and the missile fault diagnosis rate and maintenance efficiency can be improved.

The invention discloses a self-adaption anti-interference detection threshold determination method for an MSK spread spectrum receiver. The method is realized through adoption of an A / D data caching module, a windowing module, a time frequency conversion module, an amplitude spectrum line mean value determination module and a detection threshold determination module. The A / D data caching module isused for caching A / D collection data of spread spectrum signals. The windowing module is used for windowing the cached data. The time frequency conversion module is used for carrying out time frequency conversion on the windowed data. The detection threshold determination module is used for determining a self-adaption anti-interference detection threshold. According to the method, the problem that a traditional anti-interference detection threshold determination method is relatively low in adaptability is solved.

The invention discloses a method for determining a self-adaptive anti-interference detection threshold of a high-dynamic digital receiver. The method is realized through an A / D data cache module, a windowing processing module, a time-frequency conversion module and a detection threshold determination module. The A / D data caching module is used for caching the A / D acquisition data of the received signals; the windowing processing module performs windowing processing on the cache data; the time-frequency conversion module performs time-frequency conversion on the windowed data; and the detectionthreshold determination module determines the self-adaptive anti-interference detection threshold. The problem that a traditional anti-interference detection threshold determination method is poor inadaptability is solved.

A broadband wireless access system and, more particularly, a method for a mobile station and a base station to perform an efficient ranging procedure considering a ranging purpose and a device for performing the same are disclosed herein. A method of a mobile station for performing ranging in a broadband wireless access system, the method includes the steps of transmitting a first ranging preamble code for requesting ranging to a base station through a first ranging opportunity of a first frame, and, when a first message is received from the base station before a timer indicating a limited time point is expired, wherein the first message including a response to the first ranging preamble code is transmitted during the limited time point, determining whether or not the ranging request is successfully made by using the first message.

The embodiment of the invention provides a wavelength division multiplexing system, a local side device and a far-end device, the wavelength division multiplexing system comprises a plurality of optical modules and a pair of wave combiners and separators, wherein the plurality of optical modules are respectively connected with the wave combiners and separators; the pair of wave combiners and separators are connected through an optical fiber link; the distances between the central wavelengths of all channels of the wave combiners and separators are equal; the distances between the central wavelengths of the transmitted light of the optical modules in the adjacent wavelength channels are different; the distances between the central wavelengths of the transmitted light of the optical modulesin the odd wavelength channels are equal; and the distances between the central wavelengths of the transmitted light of the optical modules in the even wavelength channels are equal. In the embodimentof the invention, the optical module with the non-equidistant wavelength channels and the wave combiners and separators with the equidistant wavelength channels are adopted, so that the system requirement of a 5G forward transmission network is met.

The invention discloses an electric power marketing service customer internet of things application center design method. Data and management capability required by an application center are acquired from an edge-end layer; a data access layer in a provincial side intranet is established, and the capability of a data edge layer is integrated and packaged into a service; services are packaged into business logic on a provincial intranet Internet of Things application platform, and an in-province Internet of Things application support platform is constructed; and internal and external network isolation is broken through at the headquarters platform, the external network Internet of Things application platform and the internal network application center carry out secure communication interconnection, and the application platform obtains service capabilities of the marketing business middle station, the data middle station and the external network Internet of Things center. A layer-by-layer hierarchical architecture mode fits a management structure, and unification of management and informatization is realized; and by implementing a secure communication mode, the problem of penetration of the intranet and the extranet is solved, so that data and functional services can be safely delivered, and the confidentiality of an intranet system is ensured. Through flexible design of each module of the Internet of Things application center, system requirements are met, and maintainability and expandability are improved.

The invention belongs to the field of aerospace and aviation, relates to a cone valve, and in particular to a low flow resistance cone valve. The cone valve comprises an adjusting circular cone and a throttling circular tube. The improvement of the cone valve is as follows: the throttling circular tube comprises a convergent section pipeline, a throat part pipeline and a diffusion section pipeline which are sequentially arranged in a propellant injection direction, wherein each section of pipeline meets a certain parameter. With the improvement in the invention, the problems that an engine is high in pressure drop and large in flow resistance in the 7500 N working condition can be avoided, and the cone valve can meet requirements of the engine system in the 7500 N working condition.

A power output management apparatus of a battery and a management method thereof are provided. The management method includes: enabling a power output mode and discharging a battery to a load via a discharge circuit in the power output mode; calculating the output power of the discharge circuit during the discharge; comparing the output power and a target power to generate a comparison result; and setting the output power being adjusted step by step by a unit compensation amount via the discharge circuit according to the comparison result.

The invention relates to a replaceable CPU module device of a desktop computer, comprising a system control module board, a CPU module board and a radiation device, wherein a second bus connector of the CPU module board is a golden finger joint extending from the CPU module board and is arranged on a socket joint of a first bus connector of the system control module board so that the replaceable CPU module device of the desktop computer can be utilized by a user to decrease the cost burden for replacing a CPU and prolonging the life cycles of peripheral devices of the desktop computer.

The invention discloses an automatic protection device for detecting X ray bulb tube current, and belongs to the technical field of a medical appliance. The automatic protection device comprises an input unit of test equipment, an output unit of an X ray bulb tube, a sampling unit, an amplification unit, a reference unit, a feedback unit, a logic operation unit and a control unit, wherein the input unit, the output unit, the sampling unit, the amplification unit, the reference unit, the feedback unit, the logic operation unit and the control unit are sequentially connected to form a loop; theamplification unit is connected with the feedback unit; through tube current signals output by the detection output unit, through sampling, amplification, regulation and feedback control, the formation of a closed loop system by the test equipment and the X-ray bulb tube can be realized; the high-voltage output in the test equipment is effectively controlled on the closed loop system. When the abnormal change of the tube current is detected, the high-voltage output of the detection equipment can be fast switched off; elements in the test equipment is protected; the equipment stability and reliability are improved.

The invention provides a 100G WDM (Wavelength Division Multiplexing) network planning system. The planning system comprises a status analysis system module used for determining the influence result of introducing 100G wavelength division multiplexing according to technology and network status information, and acquiring a preliminary feasibility judgment result; an index system module used for determining each key index of the 100G wavelength division multiplexing applied to the current network; a test system module used for acquiring a test result; a planning strategy system module used for determining an application model of network construction and the principle and strategy of the network construction according to the preliminary feasibility judgment result and the test result; a business planning system module used for performing business planning at different latitude, and determining the network requirement; a networking planning system module used for forming various aspects of networking construction schemes based on the network requirement, and obtaining a 100G wavelength division multiplexing system scheme; and an evaluation system module used for performing evaluation analysis, obtaining an evaluation analysis result, and determining the feasibility of each networking construction scheme according to the evaluation analysis result. The scheme of the embodiment of the invention satisfies the planning construction requirements of the 100G network and the system requirements of the 100G WDM network.

The invention discloses a high-dielectric and low-loss material based on a capacitance-inductance synergistic effect and a preparation method, and the preparation method comprises the following steps:step 1, weighing graphene with different mass fractions, respectively mixing the graphene with polyvinylidene fluoride, and conducting crushing and drying to obtain first mixed powder and second mixed powder, wherein the mass fraction of the first mixed powder graphene is 0-6 wt.%, and the mass fraction of the second mixed powder graphene is 6-18 wt.%. step 2, subjecting the first mixed powder tocompression molding to obtain a single-layer material; and step 3, pouring the second mixed powder into the single-layer material prepared in the step 2, and carrying out compression molding to prepare the high-dielectric and low-loss material with the double-layer structure. According to the invention, the graphene powder is used as a conductive functional phase, the single-layer block materialwith inductance and capacitance characteristics is prepared, the inductance-capacitance and capacitance-inductance-capacitance laminated materials are prepared through sequential lamination and have the characteristics of high dielectric property and low loss, and large-scale production is facilitated.

The invention discloses an input optical signal generating device for an optical fiber array and a photoetching system. The input optical signal generating device is composed of optical components such as a spatial light modulator, a digital micro-mirror device and a micro-lens array. An incident single laser beam is modulated into a multi-beam array through the spatial light modulator, then any sub-beam in the multi-beam array is reflected into a corresponding micro-lens in a micro-lens array through a digital micro-lens device, and each sub-beam is focused through the micro-lens and then is incident into an optical fiber in an optical fiber array. Through programming control of the digital micro-mirror device, high-speed switching of on-off of each path of input optical signal in the optical fiber array can be realized. According to the invention, light source power can be effectively utilized to carry out multi-path light beam splitting and couple into the optical fiber array, and independent and controllable high-speed optical switch signal input of each optical fiber in the optical fiber array can be realized. The device can be used as a key device to be applied to the fields of communication, sensing, imaging, optical micromachining and the like based on optical fibers.

The invention provides a planted roof root-resistance waterproof roll which is composed of 28-30 parts of asphalt, 2-6 parts of SBS (styrene butadiene styrene), 3-6 parts of SBR (styrene butadiene rubber), 1.6-7 parts of APP (ammonium polyphosphate), 15-23 parts of mixed grease, 3-6 parts of fire retardant, 10-13 parts of anti-migration plasticizer, 23-24 parts of polyvinyl chloride resin, 8-10 parts of portland cement powder, 1.0-1.2 parts of nano-zinc oxide, 1-5 parts of dibasic lead phosphate, 2-8 parts of terpolymer resin, 1-5 parts of ABS (acrylonitrile butadiene styrene) resin, 15-22 parts of 909 anti-freeze binder, 10-12 parts of polypropylene fibers and 0.8-1.2 parts of chemical root retardant. The roll is capable of resisting root puncture without influences on normal growth of plants, is waterproof for long term, is capable of forming a high-intensity waterproof layer with high pressure water resistance capacity, and further is fatigue resistant and is high in tensile strength; besides, due to the SBS modified asphalt coating layer with strong original nature, the roll has the advantages of high adaptability to shrinkage and crack of the base layer, excellent high-temperature and low-temperature resistance capacity, high adaptability to cold and hot regions, and high corrosion, mildew and weather resistance.

The invention discloses an electronic communication power supply system. The system comprises a controller, a comparator, a wireless module, a voltage sampling module, a PFC controller module, a booster circuit, and a rectifier circuit. The controller is connected with an over-current protection driver module, the wireless module, the comparator, the booster circuit, and a voltage and current sampling module. The comparator is further connected with the voltage and current sampling module. The voltage and current sampling module is further connected with an isolation transformer, the rectifier circuit, and an over-current protection module. The over-current protection module is further connected with the other end of the over-current protection driver module. The system of the invention adopts a phase difference measurement method. According to the method, voltage and current signals detected by the secondary side of the isolation transformer are shaped by the comparator, the phase difference between voltage and current is calculated, and the phase difference is sent to the controller for cosine calculation to get the power factor of the system. Through phase measurement using an equal precision method, very high precision can be achieved. The system has the advantages of simple structure, small size and low cost.

The invention relates to a medical device, in particular to an orthopedic surgery navigation system which is used in a closed intramedullary nail for fracture recovery surgery. The orthopedic surgery navigation system includes a binocular stereo vision sensing device and markers, the binocular stereo vision sensing device includes: a computer with the main frequency of not less than 1G, a locator which is arranged on a locator support, two CCD cameras which are arranged in the locator and a dual-channel signal synchronizer which is connected with an image collection card, at least three active luminous diodes which are not positioned on a same straight line are arranged on the markers, wherein, an intramedullary nail is rigidly inserted and connected on one marker, and the other marker is rigidly inserted and connected with a special surgical electric drill. The invention aims at providing the orthopedic surgery navigation system and realizing the accurate positioning of the relative position relationship of a surgical tool and the lesion part of patients, so a surgeon can accurately and successfully drill a twist-locking hole of the intramedullary nail under the guidance of a screen of the computer.

An embodiment of the present invention provides a wavelength division multiplexing system, a local end device, and a remote device. The wavelength division multiplexing system includes: a plurality of optical modules, a pair of multiplexer A pair of multiplexers and demultiplexers are connected by an optical fiber link; the center wavelength spacing of each channel of the multiplexer and demultiplexer is equal; the distance between the center wavelengths of the transmitted light of the optical module in adjacent wavelength channels is not equal, and the odd wavelength channels The distances between the central wavelengths of the transmitted lights of the optical modules are equal, and the distances between the central wavelengths of the transmitted lights of the optical modules with even wavelength channels are equal. In the embodiment of the present invention, an optical module with non-equally spaced wavelength channels and a multiplexer / demultiplexer with equidistant wavelength channels are used to meet the system requirements of the 5G fronthaul network.

A vehicle radar system includes a plurality of transmission sub-arrays, wherein the plurality of transmission sub-arrays are symmetrical with respect to a symmetry axis and the plurality of transmission sub-arrays are parallel to the symmetry axis. The vehicle radar system further includes a transmission power splitter which is coupled to the plurality of transmission sub-arrays for respectively applying a plurality of phases and a plurality of amplitudes corresponding to the plurality of transmission sub-arrays to the plurality of transmission sub-arrays; wherein among the plurality of transmission sub-arrays, a first transmission sub-array which is closest to the symmetry axis and a second transmission sub-array which is farthest from the symmetry axis have a phase difference between 120 degrees and 180 degrees. The vehicle radar system of the present invention can simultaneously meet the system requirements of the LCA system, the DOW system, the RCTA system and the BSD system, thereby reducing the production cost and the complexity in system integration.

The present invention provides a demodulation method in which the N-order Viterbi idea is applied to the M-GFSK phase domain, by applying the Viterbi idea to the M-GFSK phase domain and using complex multiplication in the traditional Viterbi method when calculating the path increment , Addition and subtraction are replaced by real number subtraction, which reduces the computational complexity and improves the bit error rate performance of the system. The receiving end calculates the photopic distance of the additional cumulative phase matrix corresponding to the additional cumulative phase sequence and the reference state, and performs different iterations according to the number of executions of the present invention through the Viterbi idea, and obtains the minimum photopic distance buffer matrix and the minimum photopic distance row number Index cache matrix. According to the minimum value index of the Nth row vector of the minimum apparent distance cache matrix, the minimum apparent distance row number index matrix is ​​traced back to the first row vector, and the original is demodulated according to the mapping relationship between the index value corresponding to the first row and the symbol symbol. The invention calculates the maximum likelihood path and improves the performance of demodulation in the phase domain.

The invention discloses a new energy vehicle charging pile charging payment scheme based on digital RMB, and belongs to the field of charging pile charging payment, the new energy vehicle charging pile charging payment scheme based on digital RMB comprises a vehicle and a charging pile, the vehicle comprises a power supply management module, a vehicle wallet and a charging interface, the charging pile comprises a charging management module, a pile wallet and a charging gun; the non-network payment method comprises the following steps: S1, a charging gun of a charging pile is correctly connected with a charging interface of a vehicle; the method is low in software and hardware requirements, is not limited by any brand, and can realize small-range transformation on existing electric vehicles and charging piles, so that the system requirements are met, the technical characteristics of digital RMB off-line payment launched by the Chinese People's Bank are used, and under the condition that the normal working state is met, charging and payment processes are completed in a network-free state.

The invention relates to an electromagnetic valve driver control system and a control method thereof, and belongs to the field of controller controlling. The microcontroller control system comprises apower supply module, a MCU, a communication conversion module, a drive chip, a power module and a current detection circuit, wherein the power supply module is used for supplying power to the MCU; the communication conversion module is communicated with the MCU; the drive chip is connected with the power module; the drive chip is connected with the MCU; and the current detection circuit is matched with the power module. The invention further provides a method for controlling the microcontroller. The microcontroller control system is reasonable in design, is stable and reliable, use of a traditional simulating device is reduced, the digital level of the system is improved, debugging is convenient, and accuracy and interference resistance of the system are improved.