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36results about How to "Solve application needs" patented technology

System fusing broadband wireless communication and TV broadcasting service

The invention relates to a system fusing broadband wireless communication and TV broadcasting service, belonging to the wireless multimedia communication and TV broadcasting technical field. The invention is characterized in that the system comprises a plurality of multimedia programming sources, at least one multimedia coding unit, at least one relay link, at least one wireless access point AP, at least one broadcasting point BP and at least one controller; wherein, the controller comprises a time-frequency division multiplexing allocating and dispatching unit, a communication control unit, a broadcasting unit, a calculating unit and storage cell. The time-frequency division multiplexing allocating and dispatching unit divides channels in two-dimensional space composed of time and frequency, generates allocation pattern and dispatching signal to respectively dispatch the communication control unit and the broadcasting unit, thus respectively realizing mobile communication or communication on demand function and initiative broadcasting or broadcasting on demand function, the wireless access point also initiatively monitors the receiving status of broadcast packet, the calculating unit calculates packet loss rate and feedbacks the packet loss rate to the broadcasting point, and meanwhile information having public characteristic for massive users is supplied to the broadcasting point to realize broadcasting on demand.
Owner:TSINGHUA UNIV

Ternary compound lithium-ion power battery

The invention belongs to the technical field of lithium-ion batteries and particularly relates to a ternary compound lithium-ion power battery containing a multi-component conductive agent. The ternary compound lithium-ion power battery comprises a positive electrode, a negative electrode, a separator, an electrolyte and a shell, wherein the positive electrode and the negative electrode are prepared by evenly coating two sides of a current collector with a mixture prepared from a positive active material or a negative active material, a conductive agent and a binder separately; and the positive active material is a compound of 50-70% of a ternary material and 30-50% of lithium manganate. According to the lithium-ion battery, the capacity of a single battery is 20-30Ah, the energy density is 190-200Wh / kg, the rate discharge capacity percentages of the battery under discharge current of 1C, 2C and 3C can reach 98.1%, 97.40% and 96.30% in comparison with that under the discharge current of 0.5C separately, the discharge capacity percentage at low temperature of -20 DEG C can reach 76.8% and the retention rate after 200 charge and discharge cycles under 1C reaches 98%.
Owner:宁波维科新能源科技有限公司

Video content analysis method and device for IPTV (Internet Protocol Television) supervision

The invention provides a video content analysis method and device for IPTV (Internet Protocol Television) supervision. The method comprises the steps of: analyzing stability of a video content to be analyzed in time domain and space domain, and determining a target area, to be subjected to semantic recognition, in the video content; determining a feature point, which can represent the target area, in the target area according to the texture character of the target area, and computing the feature descriptor of the feature point; using the feature descriptor as a vision word to be annotated, performing matching treatment in a pre-generated visual tree search library, and thereby obtaining the semantic annotation of the feature descriptor, wherein the visual tree search library includes annotated vision words and semantic annotations of the same; determining the semantic annotation of the target area according to the semantic annotation of the feature descriptor. According to the video content analysis method and device, analysis of the video content with characteristics of diversity, complexity, real-time and the like can be achieved, and application requirements in the scene of IPTV supervision are met.
Owner:UNIS SOFTWARE SYST CO LTD +1

User locus privacy protection method based on space sequence data analysis

The invention discloses a user locus privacy protection method based on space sequence data analysis; the method comprises the following steps: carrying out cluster analysis for space sequence data of each mobile user so as to obtain interested points and zones of each user; carrying out iteration for the interested points and zones of all users in an assignment area according to time line, thus obtaining user common interested areas in different time scopes; using a position random exchange method to realize dynamic protection of the user locus privacy in each common interested area. The novel method can analyze and process the locus data in time and space dimensions, thus protecting privacy while ensuring statistics characteristic and cluster characteristic to be unchanged, satisfying application demands in space big data issue and shearing time zone analysis (area comparison analysis, population density analysis, traffic status analysis), and balancing privacy protection and data availability contradiction.
Owner:XI AN JIAOTONG UNIV

Automobile audio noise management system

The invention relates to an automobile audio noise management system, which comprises a mainframe and a vehicular ANC and entertainment system. The mainframe serving as a control and operation core controls interaction operation of audio and functional nodes to meet integral informatization and intelligentization requirements. The vehicular ANC system which serves as a node in the whole automobileaudio noise management system participates in interaction among nodes of a whole automobile and is used for subjecting collected detection information to AD conversion, DSP processing and loudspeakerplaying to complete ANC noise elimination. By replacement of a mainframe DSP module with DSP modules in independent nodes for noise reduction treatment, active noise elimination operation efficiencyis improved, and influences of ANC on operating smoothness of mainframe multimedia service are reduced. By an acceleration sensor for feedforward acquisition and pretreatment of road conditions and the like, comprehensive active noise elimination is realized.
Owner:SHANDONG GETTOP ACOUSTIC

Day and night dual-purpose optical observing and sighting system

The invention discloses a day and night dual-purpose optical observing and sighting system, which is provided with a daylight system and a low-light level night vision system, wherein the daylight system comprises a low-light level objective lens, a low-light level tube and a low-light level inverter, the low-light level night vision system comprises a daylight objective lens and a daylight inverter, the low-light level inverter and the daylight inverter image a target onto the focal plane of an eye lens by means of a cemented coincidence prism and a day-night changeover switch, a half-transparent, half-reflective film system is plated on the cemented surface of the coincidence prism, and the image of the target is reflected into the eye lens by the coincidence prism, and thereby can be observed by the human eye. Compared with the prior art, the day and night dual-purpose optical observing and sighting system has a simple structure, is reasonably designed, realizes high imaging quality, effectively enhances the human-machine ergonomics of the lens, reduces the carried burden of a user, and effectively meets the requirement of all-weather application.
Owner:HENAN COSTAR GRP CO LTD

Handwritten telephone number identification, verification and information sending system

InactiveCN106709474AQuick identificationSolve the disadvantages of slow recognitionLogisticsDigital ink recognitionImage segmentationLogistic distribution
The invention provides a handwritten telephone number identification, verification and information sending system, relates to the field of neural network identification, and particularly relates to handwritten telephone number identification used in the express delivery and logistics distribution process. The system comprises an image acquisition device and a system switchboard. The system switchboard is provided with an image identification module, an information verification and management module and a short message sending module which are arranged in the system switchboard and connected in turn. The image acquisition device and the image identification module are wirelessly connected. The handwritten telephone number identification method comprises the steps of 1) mobile phone number digital significance extraction; 2) image segmentation; 3) feature extraction; and 4) neural network identification. The system can be widely applied to the logistics industry, manual input and checking of sending of recipient pickup information are not required, the mobile phone number is automatically verified by a background database information management system through fuzzy identification and the corresponding pickup information is transmitted without artificial intervention so that the working efficiency can be greatly enhanced.
Owner:WUXI VOCATIONAL & TECHN COLLEGE

Organic additive induced goodyera foliosa plant regeneration and efficient-propagation method

The invention belongs to rapid propagation methods for important plant materials in endangered wild plants and particularly relates to tissue culture methods for wild orchids. The invention aims at providing an organic additive induced goodyera foliosa plant regeneration and efficient-propagation method which comprises the steps of selecting and disinfecting a material, carrying out induced culture, carrying out propagation culture, carrying out root induction and transplanting, wherein a bud induction culture medium, a propagation culture medium and a rooting culture medium are involved. According to the formulae of culture media, the coefficient of propagation is large, the rooting rate is high, the plant growth required time is short, after cultivating, the adaptability is strong, and nursery-grown plants are robust, tall and straight and good, orderly and consistent in growth vigor, so that a nursery-grown plant culture process is greatly shortened, and the cost is reduced greatly; a technical support is provided for the protection and large-scale industrialized production popularization and application of goodyera foliosa.
Owner:FUJIAN AGRI & FORESTRY UNIV

Universal loading method for local coordinate system map

The method is suitable for the technical field of geographic information. The invention provides a universal loading method for a local coordinate system map. An engine framework Mapbox is rendered based on a WebGL map. A series of coordinate transformation is carried out, the local coordinate system is converted into the world coordinate system, the problem of coordinate conversion is well solvedby calculating the range of the map sheet and the pixel index value, a good solution is provided for supporting the local coordinate system, the actual application requirements of many industries, especially the territorial industry, are met, and the method has great practical significance.
Owner:吉奥时空信息技术股份有限公司

Flexible phase change composite material with cross-linked network structure and preparation method thereof

The invention discloses a flexible phase change composite material with a cross-linked network structure and a preparation method thereof, which belong to the field of composite materials. Theflexible phase change composite material with a cross-linked network structure comprises a flexible polymer matrix, a carbon nanotube (CNT) crosslinked with the flexible matrix, and a filled solid-liquid phase change material. A three-dimensional cross-linked network based on the flexible polymer / carbon nanotubes is constructed by adding a cross-linking agent for chemical cross-linking reaction, and the chemical cross-linking effect can reduce the interface hindering effect of the CNT and solve the problem of non-uniform dispersion of the CNT. The packaging efficiency of the solid-liquid phase change material is favorably improved, and the mechanical property and the heat storage property of the phase change composite material are remarkably enhanced. The material disclosed by the invention has stable phase change performance and has the functions of temperature regulation and heat energy storage. The material is easy to cut and process, shows good flexibility at room temperature, and has a good application prospect in the field of temperature control of flexible electronic devices.
Owner:UNIV OF SCI & TECH BEIJING +1

A low-temperature sintered microwave dielectric ceramic material and its preparation method

The invention belongs to the field of electronic ceramics and its manufacture, and relates to a low-temperature sintered microwave dielectric ceramic material and a preparation method thereof, which are mainly used for dielectric filters of communication systems. The material of the present invention is BaWO 4 Microwave-based dielectric ceramic material, sintering temperature 850℃~900℃, dielectric constant 5.8~9.0, loss as low as 3.70×10 ‑4 , frequency temperature coefficient ‑30~‑10ppm / ℃; its general chemical formula is BaWO 4 -xM 2 CO 3 ‑yBaO‑zB 2 o 3 ‑wSiO 2 , where M is Li + 、K + or Na + Alkali metal ions, and x, y, z, and w cannot be zero at the same time. When y=0, after sintering at 850°C to 900°C, all are BaWO 4 phase; when y is not equal to 0, the main crystal phase is BaWO 4 phase, the subcrystalline phase is BaSi 2 o 5 Mutually. During preparation, the raw materials are directly mixed according to the required chemical formula, and prepared by solid-state sintering method; the final sintering temperature is as low as 850°C, the holding time is 0.5-2h, and the dielectric performance is 5.8-9.0, which meets the high-frequency dielectric filter BaWO 4 The base LTCC microwave dielectric ceramic material can be applied in the LTCC field.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

A kind of rapid propagation method of hemp vine

The invention belongs to rapid propagating methods for medicinal plants and important plant materials in vertical greening of environmental governance and particularly relates to a rapid propagating method for mucuna sempervirens which is a vine and is a peculiar tree species of China. The method comprises the steps of selecting and disinfecting a material, carrying out induced culture, carrying out propagation culture, carrying out root induction and transplanting, wherein a bud induction culture medium, a propagation culture medium and a rooting culture medium are involved. According to the formulae for mucuna sempervirens propagation, the coefficient of propagation is large, the rooting rate is high, the plant growth required time is short, after cultivating, the adaptability is strong, and nursery-grown plants are robust, tall and straight and good, orderly and consistent in growth vigor, so that a nursery-grown plant culture process is greatly shortened, and the cost is reduced greatly; a technical support is provided for the protection and large-scale industrialized production popularization and application of mucuna sempervirens; by the method disclosed by the invention, available resources can be applied to the maximum, and the requirements on application of scarce nursery-grown plants are met through biotechnical means in short time.
Owner:FUJIAN AGRI & FORESTRY UNIV

A kind of blood green regeneration and rapid propagation method

The invention belongs to a rapid propagation method for an important plant material in endangered wild plants and particularly relates to a regenerating and rapid propagating method for liparis nervosa. The method comprises the steps of material selection and sterilization; inducing culture; multiplication culture; inducing rooting; and transplanting. The regenerating and rapid propagating method aims at solving the problems of low seed germination rate, rooting difficulty and low growth speed in a natural environment because of having no vegetative masses in the prior art, and provides the technical support for large-scale industrial production. By using the regenerating and rapid propagating method, the expanding propagation coefficient is high, the propagation time is short, the growth processes are greatly shortened, seedlings can be obtained after carrying out inducing rooting for 20-25 days, and the survival rate of transplanting is up to more than 96%; and the cost is greatly reduced, and the seedlings are high in survival rate after being transplanted and are robust and straight, good in growth vigor, neat and consistent. The technical support is provided for protecting liparis nervosa and large-scale industrial production, popularization and application.
Owner:福州旗山花卉有限公司

System fusing broadband wireless communication and TV broadcasting service

The invention relates to a system fusing broadband wireless communication and TV broadcasting service, belonging to the wireless multimedia communication and TV broadcasting technical field. The invention is characterized in that the system comprises a plurality of multimedia programming sources, at least one multimedia coding unit, at least one relay link, at least one wireless access point AP, at least one broadcasting point BP and at least one controller; wherein, the controller comprises a time-frequency division multiplexing allocating and dispatching unit, a communication control unit, a broadcasting unit, a calculating unit and storage cell. The time-frequency division multiplexing allocating and dispatching unit divides channels in two-dimensional space composed of time and frequency, generates allocation pattern and dispatching signal to respectively dispatch the communication control unit and the broadcasting unit, thus respectively realizing mobile communication or communication on demand function and initiative broadcasting or broadcasting on demand function, the wireless access point also initiatively monitors the receiving status of broadcast packet, the calculating unit calculates packet loss rate and feedbacks the packet loss rate to the broadcasting point, and meanwhile information having public characteristic for massive users is supplied to the broadcasting point to realize broadcasting on demand.
Owner:TSINGHUA UNIV

Split type uncooled infrared core assembly

The invention belongs to the technical field of infrared imaging, and particularly relates to a split type uncooled infrared core assembly. The split type uncooled infrared core assembly solves the problems of limitation and defects of an existing split type uncooled infrared core assembly in small-size and low-power-consumption applications. The core assembly is of a split structure, specifically, the whole core assembly is divided into two parts. An infrared detector and a reading circuit thereof are the first part, and the function of detector signal reading is achieved. An infrared image preprocessing circuit and a power supply extended interface circuit are the second part, and the function of image preprocessing and interface output is achieved. Compared with the prior art, the splittype structure is adopted, only the detector and the reading circuit are arranged at the front end, so that the size and power consumption are reduced, and the requirements of application limited bysmall size are met.
Owner:TIANJIN JINHANG INST OF TECH PHYSICS

A new type of heat-resistant and flame-retardant foam and its preparation process

The invention discloses a new type of heat-resistant and flame-retardant foam, which is characterized in that it comprises: PET ultra-thin buffer foam layer base material, antibacterial layer, moisture-proof layer, heat-resistant and flame-retardant layer, aluminum foil cloth and embossed release Model paper; the outer side of the PET ultra-thin buffer foam layer substrate is surrounded by an antibacterial layer; the outer side of the antibacterial layer is surrounded by a moisture-proof layer; the outer side of the moisture-proof layer is surrounded by a heat-resistant flame-retardant layer; the heat-resistant The outer side of the flame retardant layer is surrounded by aluminum foil cloth; one side of the aluminum foil cloth away from the heat-resistant flame retardant layer is provided with embossed release paper. The present invention is provided with a heat-resistant flame-retardant layer, an antibacterial layer and a moisture-proof layer so that the foam has excellent heat-resistant flame-retardant, antibacterial and moisture-proof effects. And keeping the overall thickness of the PET ultra-thin cushioning foam layer substrate at 0.25~0.4mm makes the polymer foam described in the present invention more able to have light and thin characteristics while shock absorption, and expands the application of foam Scope, to solve the practical application needs.
Owner:苏州腾茂电子科技有限公司

A method of constructing typo word knowledge base based on fuzzy matching and statistics

The invention discloses a method for constructing a typo word knowledge base based on fuzzy matching and statistics, which performs word segmentation on corpus sentences to obtain scattered word strings, combines the scattered strings of words according to the scattered string combination rules to obtain merged word strings, and utilizes according to Chinese dictionaries The fuzzy matching algorithm obtains the similar word candidate set of the merged word string; obtains the adjacent element set of the merged word string and the adjacent element set of all similar words in its similar word candidate set; according to the co-occurrence of each adjacent element set element of the merged word string in the corpus Frequency judges whether a merged word string is a typo word string, if the merged word string is a typo word string, then establishes the wrong word pair of the merged word string according to the frequency of occurrence of the adjacent element set elements of similar words in the corpus . The method for constructing the wrong word knowledge base of the present invention solves the problem of low correction accuracy caused by sparse data and only judging wrong words based on the Chinese dictionary in the prior art. The system responds quickly and the accuracy meets the actual application requirements, effectively High performance and accuracy.
Owner:南方电网互联网服务有限公司

A solar charging control circuit and method

The invention discloses a solar charging control circuit, which relates to the field of solar power supply, and includes a photovoltaic module, a power circuit, a control circuit, a drive circuit, a power circuit, a feedback circuit and a storage battery; the power circuit is connected to the positive pole and the negative pole of the photovoltaic module, and connected to the control circuit; the input end of the control circuit is connected to the output end of the power circuit, and the output end of the control circuit is connected to the drive circuit; the input end of the drive circuit is connected to the output end of the control circuit, and the output end of the drive circuit is connected to the power circuit; The input end of the power circuit is connected to the output end of the drive circuit, and the output end of the power circuit is connected to the storage battery; the input end of the feedback circuit is connected to the output end of the power circuit, and the output end of the feedback circuit is connected to the output end of the controller, thereby simplifying the circuit design of solar charging , Reduce energy loss, and realize the charging control of various battery voltage levels, and solve the application requirements of miniaturized portable power supply system.
Owner:自贡兴川光电有限公司

Airless automatic spray gun employing electromagnet to drive switch-on and switch-off movements

An airless automatic spray gun employing an electromagnet to drive switch-on and switch-off movements comprises a gun body, a gun base, a gun needle rod, a gun head, a gun head cap, a transmission device, a self-holding electromagnet, an elastic assembly and a programmable controller, the gun head is located in the gun body, and the transmission device is connected between the gun needle rod and the self-holding electromagnet. Power transmission is carried out through the transmission device, and the self-holding electromagnet provides the movement execution force and the state keeping force for on-off movements of the whole spray gun under the control of the programmable controller; the elastic assembly is located at the rear end of the gun head and provides locking and the flexible feeding movement execution force so that the gun head and the gun head cap are kept in a sealed state under the rated spraying liquid working pressure, and extra power except the self-holding electromagnet is provided when the gun head executes the switch-off movement; the airless automatic spray gun is driven by the electromagnet to perform switch-on and switch-off movements; and the device has the characteristics of low power consumption, compact structure, quick operation movement, programmable and IO control, flexible operation, high applicability and the like.
Owner:珠海市睿涂智能科技有限公司
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