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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 38. Отображено 38.
16-09-2015 дата публикации

Printed circuit board manual weld auxiliary fixtures

Номер: CN0204652799U
Принадлежит:

The utility model provides a printed circuit board manual weld auxiliary fixtures, including handle, the body of rod, end and spacing support, the one end of handle connecting -rod body, the other end of the detachable connecting -rod body of spacing support, the one end of spacing support is located to the end, and spacing support includes spacing portion and connecting portion, and spacing position is between end and connecting portion, and the longitudinal section diameter of spacing portion is greater than connecting portion cross section diameter, and the cross section diameter of end is less than the cross section diameter of connecting portion. The utility model has the advantages of with positive effect be: the frock replaces fastening screw and fixes a position, has reduced the solder mount degree of difficulty that needs the components and parts of installation heatsink, moment has improved the reliability to the damage of heat conduction gasket and components and parts when having ...

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21-01-2015 дата публикации

Method and convergence device for prolonging life cycle of sensor network through cache

Номер: CN104301313A
Принадлежит:

The embodiment of the invention provides a method and convergence device for prolonging the life cycle of a sensor network through a cache, and relates to the field of sensor networks. By means of the method and the convergence device, under the condition of high-frequency external Internet access, power consumption is lowered, and the life cycle of the sensor network is prolonged. The convergence device comprises an access processing module, a control module and a cache space management module. The access processing module is used for receiving and analyzing data information requested by an access request. The control module is used for inquiring a cache strategy module whether the requested data information meets the requirement of a cache strategy, if the requested data information meets the requirement of the cache strategy, the requested data from the cache space management module is directly obtained, and if the requested data information does not meet the requirement of the cache ...

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25-03-2015 дата публикации

Preparation method of high-purity troxerutin

Номер: CN104447914A
Принадлежит:

The invention discloses a preparation method of high-purity troxerutin. According to the preparation method of the high-purity troxerutin, the synthesis and refining processes of the troxerutin are improved; sodium methoxide or sodium ethoxide is selected as a catalyst, supercritical CO2 is selected for extraction and crystallization refining of the troxerutin, and finally, the troxerutin of which the yield and the purity both are greatly improved in contrast with a traditional process can be obtained.

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27-05-2015 дата публикации

High-speed data encryption system design method based on non-uniform information bits

Номер: CN104660396A
Принадлежит:

The invention discloses a high-speed data encryption system design method based on non-uniform information bits. The method comprises two parts, namely, an encryption process and a decryption process, higher-intensity encryption is performed on information bits with higher weight with a more complex encryption algorithm by using significance difference of bits of information, and only significant bits are required to be complexly encrypted, so that high-speed data encryption of large data volumes can be realized at lower hardware costs. According to the method, the significance of the information bits is distinguished, MSBs (most significant bits) are protected at a higher level, and the computation amount and the power consumption of an encryption system are decreased.

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16-07-2014 дата публикации

Resource leveling multi-path routing method applicable to industrial wireless sensor network

Номер: CN103929782A
Принадлежит:

The invention provides a multi-path routing method based on a resource leveling strategy and applicable to an industrial wireless sensor network, and relates to the industrial wireless sensor network. According to the routing method, the concept of cross-layer design is adopted, comprehensive evaluation is carried out on data receiving and transmitting energy loss of a physical layer and forward queue memory loss of a network layer, and a route priority judgment strategy based on resource leveling factors is disclosed. Meanwhile, with the combination of a breadth-first search algorithm, multiple redundant routes between a data source node and destination nodes are calculated, the requirement for leveling node resources of the industrial wireless sensor network is met, and reliability of communication between the source node and the destination nodes is also improved. An ISA100.11a network is taken as an example, when a system manager in the ISA100.11a network carries out routing path calculation ...

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19-01-2011 дата публикации

Dual-frequency wireless sensor node

Номер: CN0101950472A
Принадлежит:

The invention discloses a dual-frequency wireless sensor node, which comprises a data acquisition module, a data processing module, a power supply module and two wireless data transmission modules, namely a ZigBee-based short-distance wireless communication module and a remote wireless communication module using a wireless power amplifying circuit. The remote wireless communication module and the short-distance wireless communication module are respectively connected with the data processing module; the data acquisition module acquires data of ambient environment, transmits the data to the data processing module for analysis processing and selects one wireless data transmission module for remote or short-distance data transmission as required; and the power supply module supplies power to the modules. The dual-frequency wireless sensor node has the advantages of novel and reasonable design, simple and convenient use and operation and capability of effectively solving the problems of nonuniform ...

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15-12-2010 дата публикации

Service-oriented sensor network gateway device and control method thereof

Номер: CN0101917778A
Принадлежит:

The invention discloses a service-oriented sensor network gateway device and a control method thereof. A wireless communication module receives real-time data collected by a wireless sensor network, transmits the data to a microprocessor and saves the data in a memory; the microprocessor packages the data into Web service; a GPRS (General Packet Radio Service) module is connected to Internet network; and an Internet user invokes the Web service through the network connection established by the GPRS module. The invention has the advantages of simple structure, small volume, high intelligence and good use effect.

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15-06-2011 дата публикации

System for remotely monitoring moisture content and temperature of soil in sun room

Номер: CN0102096428A
Принадлежит:

The invention discloses a system for remotely monitoring the moisture content and temperature of soil in a sun room. The system comprises a soil moisture sensor for detecting the moisture content of the soil in the sun room in real time, a control module which is connected with the soil moisture sensor and controls drip irrigation equipment arranged in the sun room, and a wireless communication module, a storage module, an on-site alarm unit and a power supply unit which are connected with the control module respectively, wherein the on-site alarm unit is arranged in the sun room; a solenoid valve is arranged on a water supply pipeline of the drip irrigation equipment; and a switching state and opening of the solenoid valve are controlled by the control module and the solenoid valve is connected with the control module. The system is low in cost, low in power consumption, has high robustness and intelligent degree, and can be used while being plugged; wiring is not needed, and monitoring ...

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09-09-2015 дата публикации

Method for purifying dehydroandrographolide succinate

Номер: CN104892552A
Принадлежит:

The invention discloses a method for purifying dehydroandrographolide succinate. According to the invention, a solution, of hydrochloric acid or acetic acid, with a pH value of 5-6 is selected as a dispersant during dispersion and crystallization of dehydroandrographolide succinate; and extraction, crystallization and refining of dehydroandrographolide succinate are carried out with supercritical CO2. The obtained product has a yield more 80% and purity more than 98%.

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14-01-2015 дата публикации

Sulfonated perfluorocyclobutyl polyarylether polymers as well as preparation method and application thereof

Номер: CN104277216A
Принадлежит:

The invention discloses sulfonated perfluorocyclobutyl polyarylether polymers as well as a preparation method and application thereof, belonging to the technical field of fuel cells. The preparation method of sulfonated perfluorocyclobutyl polyarylether polymers comprises the following steps: preparing a trifluorovinyl aryl ether monomer containing methoxy by taking different methoxy aromatic dihydric phenols and 1,2-dibromotetrafluoroethane as raw materials; obtaining perfluorocyclobutyl polyarylether polymer containing methoxy by utilizing (2phi+2phi) thermal cyclization polymerization; reacting the perfluorocyclobutyl polyarylether polymer with boron tribromide so as to remove a protecting group methyl to prepare perfluorocyclobutyl polyarylether polymers with different hydroxyl contents; introducing an sulfonation lateral group by adopting a grafting method to obtain the sulfonated perfluorocyclobutyl polyarylether polymers which are used for preparing a proton exchange membrane. A ...

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01-04-2015 дата публикации

Access fault monitoring method and device

Номер: CN104486098A
Принадлежит:

The embodiment of the invention discloses an access fault monitoring method and device. The method comprises the following steps that the number of access request records carrying access mark information corresponding to a target monitoring access type is counted in an access request record in a preset time period, and is used as the access quantity of the target monitoring access type in the preset time period; whether the access quantity of the target monitoring access type is abnormal or not is judged according to the access quantity threshold of the preset target monitoring access type; if so, a fault prompt is given out, and the fault prompt carries the target monitoring access type used for overhauling a fault. When the method and the device are adopted, the goal of monitoring the specific target monitoring access type can be achieved, so that the efficiency of discovering and eliminating the access fault is improved.

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09-02-2011 дата публикации

Wireless sensor network-based greenhouse group control system and control method thereof

Номер: CN0101969613A
Принадлежит:

The invention discloses a wireless sensor network-based greenhouse group control system and a control method thereof. Each greenhouse is provided with a plurality of wireless sensor nodes and a cluster head node for acquiring environmental factors of the greenhouses according to needs, wherein the wireless sensor nodes and the cluster head nodes autonomously form wireless sensor networks by wireless communication; the wireless sensor nodes transmit monitoring data to the corresponding cluster head nodes in a multi-hop way; the cluster head nodes transmit the data to a gateway node which uploads the data to a communication server; the communication server performs two-way communication with a control computer; and the control computer makes corresponding guidance schemes according to the data monitored by the wireless sensor networks in real time, and synchronously transmits control instructions to the wireless sensor networks according to the guidance schemes. In the system and the method ...

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05-08-2015 дата публикации

Oxazole compound with anti-fungal activity, preparation method of oxazole compound and application of oxazole compound

Номер: CN104817549A
Принадлежит:

The invention discloses an oxazole compound with anti-fungal activity, a preparation method of the oxazole compound and an application of the oxazole compound to tobacco powdery mildew original fungi or cotton anthracnose original fungi prevention, and belongs to the technical field of organic synthesis. The technical scheme mainly includes that the oxazole compound with the anti-fungal activity is provided with a structure shown in the instruction, R1 refers to propiono, isopropyl, acetyl, ethyl or methyl, and R2 refers to dimethylamino or methylamine. Five oxazole compounds with the anti-fungal activity are synthesized by the novel method, the preparation process is simple in technology and easy to control, target product yield is high, repeatability is fine, and the five prepared oxazole compounds with the anti-fungal activity have a certain prevention function for tobacco powdery mildew original fungi or cotton anthracnose original fungi.

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19-11-2014 дата публикации

Android-based indoor microenvironment perception and home appliance control method

Номер: CN104155943A
Принадлежит:

The invention discloses an Android-based indoor microenvironment perception and home appliance control method. The Android-based indoor microenvironment perception and home appliance control method comprises an Android-based indoor microenvironment perception and home appliance control system, wherein the control system comprises a wireless sensor node, a gateway, a database server, a Web server, a control module and a smart phone. According to the method, Android and indoor environment monitor are combined together, so that the application range is widened.

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08-10-2014 дата публикации

Method, device and system for communication dispatching based on Tuxedo middleware

Номер: CN104090824A
Принадлежит:

The embodiment of the invention discloses a method, device and system for communication dispatching based on Tuxedo middleware. The method comprises the following steps: according to the Tuxedo domain configuration of a production main engine, periodically detecting an operating state of the production main engine, and recording a detection result in a detection log; periodically polling the detection log, and according to the detection result in the detection log, judging whether the production main engine is abnormal or not; if yes, isolating the abnormal production main engine, and starting the Tuxedo domain configuration of an emergency main engine to enable the emergency main engine to take over the abnormal production main engine to deal with professional work. The method, the device and the system, provided by the embodiment of the invention, are used, so that the automatic isolating of the abnormal production main engine and the automatic taking over of the emergency main engine ...

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03-03-2010 дата публикации

Orchard planting monitoring system based on wireless sensor networks and monitoring method thereof

Номер: CN0101661664A
Принадлежит:

The invention discloses an orchard planting monitoring system based on wireless sensor networks and a monitoring method thereof. The system comprises a plurality of wireless sensor networks comprisinga plurality of wireless sensor nodes, gateway nodes, a communication server connected with the gateway nodes and a host monitoring machine connected with the communication server. The method comprises the following steps: 1. self-organizing the plurality of wireless sensor networks by the plurality of wireless sensor nodes and transmitting monitoring data to the gateway nodes after collection atregular time, and then packing and transmitting the monitoring data to the communication server by the gateway nodes; 2. transmitting the monitoring data to the host monitoring machine by the communication server; and 3. pretreating the monitoring data and removing pseudo data by the host monitoring machine, and transferring an expert system for analyzing and processing the monitoring data and making ...

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14-07-2010 дата публикации

Surge immunity test method of high-speed signal wire

Номер: CN0101777936A
Принадлежит:

The invention discloses a surge immunity test method of a high-speed signal wire, and aims at providing a test method for testing surge immunity of a communication wire under the condition that the electrical and the electronic devices adopt non-shielding cables to normally run and to transmit and process the high-speed electric signals, which adopts the technical scheme that: a test system consists of a device to be tested, an auxiliary device, a test signal generator and a photoelectric converter. A grounding bolt of the test signal generator and a grounding bolt of the device to be tested are collectively connected with a ground wire; and an anode of the test signal generator is connected with a wire core of a communication cable which is stripped. A data interface of the device to be tested is connected with an electric port of the photoelectric converter, and an optical port of the photoelectric converter is connected with the auxiliary device.

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18-02-2015 дата публикации

Method for calculating link quality estimation value of sensing network by using local characteristics

Номер: CN104363139A
Принадлежит:

The invention discloses a method for calculating the link quality estimation value of a sensing network by using local characteristics. According to existing link quality estimation value calculation methods such as the mean value method or the weighted mean value method, great difference exists between an estimation value worked out through the methods and the actual situation in network link quality description, the propagation characteristic in a software updating process is not considered, and as a result, the completion time worked out after a calculation result is substituted into an analysis model is not matched with the actual software updating completion time of a test bed. According to the method for calculating the link quality estimation value of the sensing network, local link quality estimation values of all node pairs are calculated by using the local characteristics, then the average value of all the local link estimation values is used as the link quality estimation value ...

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24-02-2010 дата публикации

Wireless sensor network node on-site wireless program updating device and updating method thereof

Номер: CN0101656975A
Принадлежит:

The invention discloses a wireless sensor network node on-site wireless program updating device and an updating method thereof. The used device comprises a PC and a data processor, wherein the PC is used for compiling programs, the data processor is provided with a wireless communication module and can access the wireless sensor network from networking, and the data processor is connected with thePC; the program updating method comprises the steps of: compiling a program to be updated into an executable file via the PC and sending into the data processor, selecting program updating mode by the data processor; the data processor accessing into the wireless sensor network from networking carrying out program updating on the whole wireless sensor network or specific wireless sensor nodes correspondingly via the wireless communication module carried by the data processor. The used device in the invention is small in volume, light in weight, convenient to carry and operate, the adopted updating ...

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11-02-2015 дата публикации

Hydraulic machine with discharging device

Номер: CN104338868A
Автор: LI SHINING
Принадлежит:

The invention relates to a hydraulic machine with a discharging device. The hydraulic machine comprises a machine body, a hydraulic cushion cylinder and a hydraulic cushion. The lower end of the hydraulic cushion cylinder is installed on the machine body, the upper end of the hydraulic cushion cylinder is connected to a bottom chute through a screw, the bottom chute is arranged in the hollow cylindrical hydraulic cushion, and a side wall hole of the hydraulic cushion is formed below the bottom chute and is connected to a reject chute. The bottom chute, the side wall hole and the reject chute below the hole are arranged in the hydraulic cushion, the requirements on tensile and central position blanking are met, the operation accuracy can be guaranteed, rejects are guided to a reject delivery device of the outer side of a machine body through the reject chute, the rejects are discharged out of the machine body reasonably and effectively, and the producing efficiency of products is improved ...

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08-04-2015 дата публикации

High-efficiency energy-saving electric motor with internal shielding ventilation opening

Номер: CN104505986A
Принадлежит:

The invention relates to a high-efficiency energy-saving electric motor with an internal shielding ventilation opening. Multiple ventilation openings are processed on the rear end cap of the fan end of the electric motor. An internal shielding assembly can be embedded in the ventilation openings. Internal and external fans are coaxially installed inside and outside the rear end cap. The forced air cooling system of the overall electric motor is formed by motor fan covers, the internal and external fans and the rear end cap with the inlet and outlet ventilation openings. Compared with another patent technology named "high-efficiency energy-saving electric motor with forced inner circulation heat radiation", temperature rise of operation at full load is reduced for 10K on the basis that other parameters are unchanged or slightly enhanced.

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07-01-2015 дата публикации

Perfluoro-cyclobutyl polyarylether polymer containing 1H-1,2,3-triazole group, as well as preparation method and application thereof

Номер: CN104262616A
Принадлежит:

The invention discloses a perfluoro-cyclobutyl polyarylether polymer containing 1H-1,2,3-triazole group, as well as a preparation method and application thereof, and belongs to the technical field of polymer synthetic chemistry and proton conducting polymers. The method comprises the following steps: synthesizing di(2-bromotetrafluoroethoxy) aromatic monohydric phenol from raw materials, namely methoxyl aromatic dihydric phenol and 1,2-dibromotetrafluoroethane; preparing a side chain precursor containing 1,2,3-triazole; synthesizing a novel trifluorovinyl aryl ether monomer from the di(2-bromotetrafluoroethoxy) aromatic monohydric phenol and the side chain precursor containing 1,2,3-triazole; synthesizing the perfluoro-cyclobutyl polyarylether containing 1,2,3-triazole group with different molecular weights by means of thermal cyclopolymerization; and deprotecting to obtain the perfluoro-cyclobutyl polyarylether polymer containing 1H-1,2,3-triazole group. The perfluoro-cyclobutyl polyarylether ...

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19-11-2014 дата публикации

Indoor exhibition guiding system based on circumstance perception

Номер: CN104156897A
Принадлежит:

The invention discloses an indoor exhibition guiding system based on circumstance perception. The indoor exhibition guiding system comprises a mobile phone end and a server, wherein the server end comprises three parts, namely a circumstance perception subsystem, a recommend subsystem and a navigation subsystem; the three subsystems share a database; the circumstance perception subsystem is responsible for acquiring user circumstance information, providing location-based message pushing service, extracting higher level information from bottom layer circumstance information through processing, and storing the higher level information into the database to be used as a data source of the recommend subsystem, so that the recommend system can call corresponding recommend algorithm according to user's particular circumstance and then push the recommend result to the mobile phone end; the recommend result can also be used as basis for path planning of the navigation subsystem; the navigation subsystem ...

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30-05-2012 дата публикации

Wireless sensor network node on-site wireless program updating device and updating method thereof

Номер: CN0101656975B
Принадлежит:

The invention discloses a wireless sensor network node on-site wireless program updating device and an updating method thereof. The used device comprises a PC and a data processor, wherein the PC is used for compiling programs, the data processor is provided with a wireless communication module and can access the wireless sensor network from networking, and the data processor is connected with the PC; the program updating method comprises the steps of: compiling a program to be updated into an executable file via the PC and sending into the data processor, selecting program updating mode by the data processor; the data processor accessing into the wireless sensor network from networking carrying out program updating on the whole wireless sensor network or specific wireless sensor nodes correspondingly via the wireless communication module carried by the data processor. The used device in the invention is small in volume, light in weight, convenient to carry and operate, the adopted updating ...

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07-01-2015 дата публикации

Novel perfluorocyclobutyl-containing macroinitiator for atom transfer radical polymerization (ATRP) and preparation method and application of novel perfluorocyclobutyl-containing macroinitiator

Номер: CN104262617A
Принадлежит:

The invention discloses a novel perfluorocyclobutyl-containing macroinitiator for atom transfer radical polymerization (ATRP) and a preparation method and application of the novel perfluorocyclobutyl-containing macroinitiator. The preparation method comprises the following main steps: (1) taking methoxydiphenol and 1, 2-dibromotetrafluoroethane as raw materials, and synthesizing novel trifluorovinyl aryl ether; (2) synthesizing polymers, namely PFCB-OMe with different molecular weights by utilizing (2 phi + 2 phi) thermal cyclization polymerization of novel trifluorovinyl aryl ether; (3) exploring deprotection reaction conditions to obtain polymers, namely PFCB-OH with different degrees of deprotection, and simultaneously preparing a macroinitiator PFCB-BA; and (4) preparing a grafted copolymer, namely PFCB-P tBMA by utilizing ATRP reaction between commercial tert-butyl methacrylate and PFCB-BA.

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25-03-2015 дата публикации

Internet of Things general event service mechanism based on Restful Web Service

Номер: CN104462235A
Принадлежит:

The invention discloses an Internet of Things general event service mechanism based on the Restful Web Service, and relates to the field of computer technologies. According to the mechanism, capacities which equipment in an Internet of Things environment can provide are abstracted into recourses in a network, and three participants, including a resource provider, a resource demander and a resource discovery system, are generally involved in the whole process. The resource provider (Internet of Things equipment) registers services which the resource provider can provide to the resource discovery system (border gateway) in the network, and the resource discovery system collects specific resource access interfaces and reports the specific resource access interfaces to a platform. When needing one resource, the user queries the platform to acquire the resources in the network; after receiving the request, the platform feeds back a resource access mode to the user; after receiving the feedback ...

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09-06-2023 дата публикации

Novel gas collecting device and air suction type electric propulsion system

Номер: CN116238712A
Принадлежит:

The novel gas collecting device comprises a rotary side wing and a gas suction spray pipe, a gas inlet and a gas outlet are formed in the two ends of the gas suction spray pipe respectively, the radius of the gas inlet is larger than that of the gas outlet, and the rotary side wing is arranged at the position, close to the gas inlet, of the inner wall of the gas suction spray pipe; one end of the rotary side wing is connected with the air suction spray pipe, and the other end of the rotary side wing is inclined towards the air outlet and forms an included angle beta with the length direction of the air suction spray pipe. The device is simple in structure, the number of particles moving in the forward direction can be increased to a great extent through the change effect of the rotary side wings on air flow in the air suction spray pipe, the air collection rate of the device is improved, and the rotary side wings are not contradictory with existing strategies of adding diamond cones, adding ...

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12-11-2014 дата публикации

Method for building Internet-of-Things ubiquitous device resource model

Номер: CN104144215A
Принадлежит:

The invention discloses a method for building an Internet-of-Things ubiquitous device resource model. The system structure of the Internet of Things is divided into five layers which sequentially include the sensing layer, the network layer, the resource layer, the platform layer and the application layer from bottom to top. According to the method, the Android is combined with indoor environment monitoring, and the application range is expanded; due to the introduction of the resource layer, different function units of heterogeneous devices of the Internet of Things can be packaged to be resources with good definition interfaces and good definition standards and integrated in a loose coupling mode, so that the aims of reusing the resources and improving interoperation between heterogeneous assemblies can be effectively achieved. Various industrial terminals and various personal terminals can be integrated through unified construction of the platform layer, terminal-to-terminal service ...

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15-12-2010 дата публикации

Intelligent greenhouse equipment control method based on short messages of mobile phone and device thereof

Номер: CN0101916104A
Принадлежит:

The invention discloses an intelligent greenhouse equipment control method based on short messages of a mobile phone and a device thereof. After regularly acquiring environmental factor data in a greenhouse, a wireless sensor network transfers the data to a monitoring center through gateway nodes and stores the data in an environmental factor database of the monitoring center; the monitoring center is connected with a GSM (Global System for Mobile Communications) network communication module; a cell phone sends a query command and a management command to the GSM network communication module through a GSM network of an operator; and the monitoring center performs query and management according to the query command or the management command and sends environmental factor database or early warning information to the cell phone. The invention has the advantages of reasonable design, simple and convenient operation, strong practicality, wide applicability, reliable performance, reasonable control ...

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04-01-2012 дата публикации

System and method for comprehensively examining wireless sensor network node

Номер: CN0101673420B
Принадлежит:

The invention discloses a system and a method for comprehensively examining a wireless sensor network node. The system comprises a wireless sensor network, a gateway node, a terminal computer, a base station and a handheld communication device, wherein the wireless sensor network comprises a plurality of wireless sensor nodes; the base station uploads data transmitted by the gateway node to the terminal computer; and the handheld communication device is operated by an examining technician. The method comprises the following steps: 1. a network is self-organized by the plurality of wireless sensor nodes and transmits monitoring data to the base station by the gateway node; 2. the base station judges whether the handheld communication device exists in a nearby region or not; 3. when the handheld communication device exists, the base station transmits the data to the handheld communication device to carry out abnormal judgment and common abnormal automatic recovery; and otherwise, the base ...

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07-01-2015 дата публикации

Self-adaptive dynamic fingerprint library construction method of LED visible light indoor positioning system

Номер: CN104270816A
Принадлежит:

The embodiment of the invention provides a self-adaptive dynamic fingerprint library construction method of an LED visible light indoor positioning system and relates to the field of LED visible light indoor positioning technologies, wherein the self-adaptive dynamic fingerprint library construction method can effectively improve the positioning speed and positioning accuracy during user online positioning experience. The method includes the steps that a plurality of sampling points at certain intervals are selected with a sampling point seriously affecting light information crossing of multiple LED lamps as the center and are placed in an original sampling point set for sampling point expansion, a final sampling point set is generated, ID serial numbers of all LED light sources capable of being received by each sampling point in the ultimate sampling point set and ultimate signal strengths corresponding to the ID serial numbers are determined through calculation, the ID serial numbers ...

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17-12-2014 дата публикации

Method and system for depth superposition of desktop element

Номер: CN104216713A
Принадлежит:

The invention provides a method for depth superposition of desktop elements. The method for depth superposition of desktop elements comprises the following steps: creating an interface for realizing depth superposition of desktop elements, wherein depth superposition operation can be conducted to views of the desktop elements through the interface; creating a management tool class for managing the depth superposition operation of the views of the desktop elements; when superposition operation is conducted to the desktop elements, establishing a binding relationship between the desktop elements through the management tool class, wherein binding rules are that upper desktop elements are parent views and lower desktop elements are child views; after the binding relationship is established, executing depth changing animation, wherein the lower desktop element child views move towards the inside of a screen for certain distance along an axis Z to produce a depth superposition effect, thus not ...

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15-12-2010 дата публикации

Sensing node circuit adapting to various sensors

Номер: CN0101917207A
Принадлежит:

The invention discloses a sensing node circuit adapting to various sensors. An environment parameter detection unit comprises various sensors and detects an environmental parameter in real time; a detected signal is acquired and processed through a central processor and stored in a data storage connected with the central processor; processed data is transmitted through a wireless radio frequency transceiving unit, a sub-miniature-A (SMA) antenna used together with the radio frequency transceiving unit and an impedance matching circuit connected between the radio frequency transceiving unit and the SMA antenna; and a power module supplies power to each power utilization unit. The circuit has the advantages of reasonable design, simple wiring, convenient installation, small size, light weight, good use effect, high practical value of a circuit board and capability of reducing the total number of node equipment needed in a network, and the used power module has reasonable design and reliable ...

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26-08-2015 дата публикации

Preparation method of p-methyl sulfone phenyl ethyl serinate

Номер: CN104860853A
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The invention discloses a preparation method of p-methyl sulfone phenyl ethyl serinate and belongs to the technical field of a synthetic technology of veterinary drugs and pharmaceutical intermediates. According to the technical scheme, the preparation method is characterized in that p-methyl sulfone phenyl serine copper is dissolved in a sodium hydroxide solution, an Na2S solution is added to precipitate Cu<2+>, activated carbon is added to adsorb excess S<2->, the mixture is mechanically agitated and subjected to suction filtration, hydrochloric acid is added to a filtrate to regulate pH to be 3-7, and the mixture is subjected to condensation crystallization and suction filtration to obtain p-methyl sulfone phenyl serine; the p-methyl sulfone phenyl serine is dissolved in absolute ethyl alcohol, concentrated sulfuric acid is added, the mixture is subjected to reflux for 4 h, cooling crystallization and suction filtration, a filter cake is dissolved in water, a saturated Na2CO3 solution ...

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17-03-2010 дата публикации

System and method for comprehensively examining wireless sensor network node

Номер: CN0101673420A
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The invention discloses a system and a method for comprehensively examining a wireless sensor network node. The system comprises a wireless sensor network, a gateway node, a terminal computer, a basestation and a handheld communication device, wherein the wireless sensor network comprises a plurality of wireless sensor nodes; the base station uploads data transmitted by the gateway node to the terminal computer; and the handheld communication device is operated by an examining technician. The method comprises the following steps: 1. a network is self-organized by the plurality of wireless sensor nodes and transmits monitoring data to the base station by the gateway node; 2. the base station judges whether the handheld communication device exists in a nearby region or not; 3. when the handheld communication device exists, the base station transmits the data to the handheld communication device to carry out abnormal judgment and common abnormal automatic recovery; and otherwise, the base ...

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07-01-2015 дата публикации

Urea SCR catalyst based on ion exchange molecular sieve

Номер: CN104258899A
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The invention discloses a urea SCR catalyst based on an ion exchange molecular sieve. A preparation process of the catalyst comprises the following steps: uniformly mixing molecular sieve particles and water to prepare molecular sieve slurry; adding active agent solution containing copper ions in the molecular sieve slurry and mixing uniformly to obtain mixed slurry; adjusting the pH value of the mixed slurry to 8.9-9.1, keeping the mixed slurry to be alkalescent, and stirring for 10-30h; filtering the active slurry, drying and calcining; cooling the catalyst powder obtained after calcining and grinding into slurry which is catalyst slurry, coating a carrier with the catalyst slurry and calcining. The method changes the coating mode of the active components on the carrier, and the disadvantages in the traditional impregnation technology that the coating uniformity is poor, the coating amount is insufficient, the active surface area of the catalyst is reduced because pores of the carrier ...

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11-03-2015 дата публикации

Main/backup NAS (Network attached storage) switching method and device

Номер: CN104407947A
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An embodiment of the invention discloses a main/backup NAS (Network attached storage) switching method and a main/backup NAS switching device, wherein the main/backup NAS switching method comprises the following steps of building a flexible link for a main NAS on a host on which the main NAS and a backup NAS are mounted, so as to perform the data reading-writing processing on the main NAS through the flexible link; checking preset check items and judging whether the main NAS is available or not according to the checked result; performing the switching processing if the main NAS is invariable, wherein the switching processing comprises the step of deleting the flexible link for the main NAS and building a flexible link for the backup NAS on the host. By employment of the switching method and device, the switching between the main NAS and the backup NAS is quickly and effectively realized by means of building and deleting the flexible link, and the problems of complicated operations and high ...

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18-02-2015 дата публикации

Database switching method and database switching system

Номер: CN104361043A
Автор: LI SHINING, MA NAN, ZHAO ZIJIAN
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The invention discloses a database switching method and a database switching system. The method comprises the following steps: installing a production library server of a production library to periodically export the table structural information of the production library and the table data of a specified table; mounting an emergency library server of an emergency library to periodically obtain the table structural information of the production library and the table data of the specified table, and reconstructing a database containing the table data in the emergency library with the same database nickname as the production library; when the emergency library server needs to be switched to, adopting a database communication configuration file of the emergency library server to replace a database communication configuration file of the production library by an application server, or breaking off the network connection of the production library server, and correcting the original network configuration ...

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