37results about How to "Meet the needs of technological development" patented technology

The invention discloses a multimedia teaching analysis system and a realizing method thereof, and is mainly used for solving the problems that a teaching system is incapable of interacting and communicating with a participator, is capable of occupying a large quantity of network resources, and is incapable of extracting, comparing and analyzing a teaching effect in real time in the prior art. The multimedia teaching analysis system comprises a central server, a data storage server, a central session server, a distributed cache server, a wireless router, a student client end and a teacher client end, wherein the data storage server, the central session server, the distributed cache server and the wireless router are connected with the central server; the student client end and the teacher client end are connected with the wireless router. By adopting the scheme, the multimedia teaching analysis system achieves the purposes of conveniently and rapidly carrying out interaction in real time, and bringing the convenience for analyzing the teaching effect, and is high in practical value and popularization value.

The invention relates to an intelligent impedance matching device of an LC resonant antenna. With the intelligent impedance matching device adopted, problems such as manual matching, long time matching, complicated process and low precision in an existing antenna impedance matching method can be solved. The intelligent impedance matching device includes the LC resonant antenna, an adjustable matching circuit unit, a test circuit unit and a micro controller; a planar spiral inductor and a parallel plate capacitor are connected in series so as to form the LC resonant antenna; the adjustable matching circuit unit includes an inductor, a first adjustable capacitor array and a second adjustable capacitor array which are in pi-shaped impedance matching network connection; the test circuit unit includes a signal generator; a Wheatstone bridge is connected between two ends of the signal generator; and four bridge arms of the Wheatstone bridge respectively are a first resistor, a second resistor, a third resistor and the adjustable matching circuit unit. The intelligent impedance matching device of the invention has the advantages of high matching efficiency, short matching time, simple matching process, high matching precision and low cost, and can be greatly adaptive to the development of some handheld RF devices.

The invention relates to an Android platform-based big dipper and GPS dual-mode on-line positioning method, which comprises a mobile positioning terminal capable of receiving the information sent by a satellite, a remote cloud server, a mobile webpage client, and an Android handset client. The mobile positioning terminal is connected with the remote cloud server through the internet. The remote cloud server is respectively connected with the mobile webpage client and the Android handset client through the internet. A mobile platform of the Freescale i.MX 6q series is operated based on the android system, so that the real-time location information of a Big Dipper / GPS dual-mode module can be received in real time. Therefore, problems in the prior art that in some remote areas, corresponding services cannot be supplied to people or enterprise and public institutions in need due to the bare coverage of communication base stations and the large transmission difficulty of information can be solved.

The invention discloses a maximally stable extremal region characteristic-based extended target tracking method. The problems that the conventional extended target tracking method is limited in stability and precision and the technological development requirement cannot be met in the prior art are mainly solved. The method comprises the following steps: selecting a square image area of which the side length a is more than 0 in an extended target; performing binarization segmentation on the selected square image area, calculating a communicated domain after each segmentation, and further detecting whether a maximally stable extremal region exists; if so, calculating the center of mass and area of the maximally stable extremal region; taking an m*m template (m is more than 0) by taking the center of mass as the center, and performing continuous frame matching pursuit on the maximally stable extremal region; and obtaining the area change of the maximally stable extremal region according to the matching pursuit so as to determine the template. According to the scheme, the aim of effectively improving the stability and precision of the extended target tracking is achieved, and the method has high practical value and popularization value.

The invention discloses a radial foil-free diode guiding magnetic field system which mainly solves the problems that in the prior art, the difficulty of implementation of electron beam transmission guiding is large, the size is large, the weight is heavy, the power consumption is high, the manufacturing cost is high, and the technological development requirements cannot be met. The radial foil-free diode guiding magnetic field system comprises a negative pole supporting rod (1), a transmission disc, a radial transmission wire (4), a first positive pole wall (2), a second positive pole wall (8) and a third positive pole wall (9), wherein the negative pole supporting rod (1) is formed by cylindrical conductors, the position below one side of the transmission disc is connected with the negative pole supporting rod (1), the transmission disc is formed by disc conductors, the radial transmission wire (4) is located right above the transmission disc, the first positive pole wall (2) and the second positive pole wall (8) are connected to the two sides of one end, which is closest to the transmission disc, of the radial transmission wire (4) respectively, the third positive pole wall (9) is located on the outer side of the transmission disc, and one end of the third positive pole wall (9) is connected with the other end, opposite to one end connected with the first positive pole wall (2) or the second positive pole wall (8), of the radial transmission wire (4). By means of the technical scheme, the radial foil-free diode guiding magnetic field system is easy to implement, achieves the aim of meeting the technological development requirements and has the high practical value and the high promotional value.

The invention discloses a multifunctional modularized particle accelerator material radiation sample holder, which belongs to the technical field of particle accelerator material radiation sample holders. The sample holder comprises a sample base, wherein the sample base is provided with a mechanical stretching module, a mechanical compression and TEM (Transmission Electron Microscopy) module, a radiation injection volume module and a radiation angle module; and the mechanical stretching module, the mechanical compression and TEM module, the radiation injection volume module and the radiationangle module are distributed in a matts form in sequence. By use of the sample holder, the radiation of multiple samples can be provided in one time, and radiation experiment time and sample consumption can be saved. By use of the sample holder, conventional mechanical experiment samples and TEM samples are organically combined with a radiation condition change sample, a great quantity of radiation sample data can be obtained in one time, material radiation damage differences caused by same parameter regulation setting and an unstable accelerator beam current state can be avoided, and result consistency is higher.

The invention discloses a small broadband reconstruction smart phone antenna. By the adoption of the small broadband reconstruction smart phone antenna, the problems that in the prior art, a smart phone antenna which is small in size, low in profile and capable of achieving multi-frequency broadband working is hard to design in an given environment, and technology development requirements can not be met are mainly solved. The small broadband reconstruction smart phone antenna comprises a shell, a medium plate arranged in the shell, a metal land arranged on one surface of the medium plate, second bending metal strip sets and first bending metal strip sets, wherein the second bending metal strip sets are all arranged on the other surface of the medium plate, the first metal strip sets are connected with feeding points (1), and the first bending metal strip sets and the second bending metal strip sets are all composed of more than one metal strip, chip diodes, chip inductors and chip capacitors, wherein the chip device diodes, the chip inductors and the chip capacitors are connected among the metal strips. According to the scheme, the small broadband reconstruction smart phone antenna achieves the goals of being small, capable of covering eight working frequency bands and high in cost performance, and has high practical value and promotional value.

The invention discloses a power divider from an over-mode coaxial waveguide to a two-way rectangular waveguide. The power divider mainly solves the problems that a mature power divider from a high-power over-mode coaxial waveguide to a two-way rectangular waveguide does not exist in the prior art, and a technological development requirement cannot be met. The power divider from the over-mode coaxial waveguide to the two-way rectangular waveguide comprises bottom plates, a top plate, an input coaxial waveguide, a cone, semi-cylindrical conductors and partial wave uprights, wherein the top of the input coaxial waveguide is fixed in central positions of the bottom plates; the bottom of the cone is fixed on the top plate; the top of the cone is connected with the input coaxial waveguide; the cone is in a conical conductor structure; the semi-cylindrical conductors are fixed between the top plate and the bottom plates, and located on the outer sides of the cone; and the partial wave uprights are fixed between the top plate and the bottom plates, and located on the outer sides of the semi-cylindrical conductors. With the adoption of the scheme, the power divider achieves purposes of small reflection, low loss, high power capacity and high-power application, and has very high practical value and popularization value.

The invention belongs to the technical field of underwater submersibles, and in particular relates to a buoyancy adjusting device based on a sea water pump. The device includes a half-meter ball device and a half-meter ball device and an electro-hydraulic control part, wherein the half-meter ball device includes a spherical shell, an oil barrel, a multi-stage cylinder, a piston, a displacement sensor and an inner chamber. The inner chamber further includes a sea water chamber and an air chamber. The electro-hydraulic control part includes a solenoid valve, a filling valve, an electromagnetic reversing valve, the sea water pump, a drive controller, a motor, safety valves, a solenoid valve, a throttle orifice, a filter, a check valve, a solenoid valve, a filter and a check valve. The half-meter ball device and the electro-hydraulic control part are connected through two pipes, one pipe is communicated with the sea water chamber in the spherical shell, and the other pipe is communicated with the inner chamber. The buoyancy adjusting device based on the sea water pump is used for accurately regulating buoyancy which the underwater submersibles such as a UUV are subjected to, and the accuracy, environmental protection and space utilization rate of the buoyancy adjusting device are improved.

The invention relates to a system and method for carrying out global information transmission by utilizing a navigation satellite. Information transmission is carried out by utilizing the existing navigation telegraph message transmission system of the navigation satellite; on the premise of not changing a navigation telegraph message transmission format and a transmission rate, an information injection hidden transmitter is additionally arranged in the front of a navigation telegraph message transmitter; hidden transmission of user data is realized based on an information hiding method; normal use of a navigation positioning satellite system is not influenced; the practical functions of the navigation positioning satellite system are expanded; multiplexing of a navigation satellite channel is realized; a broadcast communication manner facing to the coverage area of the navigation satellite is also provided; by means of the system, any individual user can receive information through a commercial civilian navigation satellite user receiver; any hardware cost is nearly unnecessary; and for example, real-time and non-real-time text transmission and non-real-time image transmission can be provided in border areas, foreign travel areas, areas without other communication manners and areas, where communication manners are inconvenient to use.

The invention discloses a desizing method for glass fiber cloth with a low expansion coefficient, and belongs to the technical field of glass fiber production. The desizing operation of the glass fiber cloth can be realized, glass fiber grey cloth on a desizing roller is placed in a BH smoldering furnace for smoldering, organic matters on the surface are further removed, and a sectional heating curve is set in the BH smoldering furnace for heating; and the organic matters on the surface of the glass fiber cloth are removed, and meanwhile, the tensile strength of the glass fiber cloth is not damaged. The technical development requirements of chip carriers in high-end industries such as aerospace, national defense military industry and supercomputers are met. The problems in the prior art are solved.

The invention discloses a power divider suitable for conversion from an overmoded circular waveguide to two paths of rectangular waveguides and mainly solves the problem that in the prior art, no mature power divider aiming at conversion from the high-power overmoded circular waveguide to two paths of rectangular waveguides is provided and the technical development requirements cannot be met. The power divider suitable for conversion from the overmoded circular waveguide to two paths of rectangular waveguides comprises an input circular waveguide, two paths of rectangular waveguides and a short circuit circular waveguide, wherein both the two paths of rectangular waveguides are vertically connected with the input circular waveguide; and the short circuit circular waveguide is connected between the two paths of rectangular waveguides. By the scheme, the power divider fulfills the aims of low reflection, high transmission efficiency, high power capacity and adaption to high power application and has high practical value and popularization value.

The invention discloses a file encryption method, the method comprising: generating an initial password; reading data to be encrypted in the file; obtaining the length of encrypted data in the file, based on the initial password and the encrypted data The length is calculated to obtain an encryption password; use the encryption password to encrypt the data to be encrypted to obtain encrypted data, and encrypt each byte in the file through the encryption password. Compared with traditional encryption methods, the It greatly increases the difficulty of password cracking and improves data security.

The invention relates to a system and method for carrying out global information transmission by utilizing a navigation satellite. Information transmission is carried out by utilizing the existing navigation telegraph message transmission system of the navigation satellite; on the premise of not changing a navigation telegraph message transmission format and a transmission rate, an information injection hidden transmitter is additionally arranged in the front of a navigation telegraph message transmitter; hidden transmission of user data is realized based on an information hiding method; normal use of a navigation positioning satellite system is not influenced; the practical functions of the navigation positioning satellite system are expanded; multiplexing of a navigation satellite channel is realized; a broadcast communication manner facing to the coverage area of the navigation satellite is also provided; by means of the system, any individual user can receive information through a commercial civilian navigation satellite user receiver; any hardware cost is nearly unnecessary; and for example, real-time and non-real-time text transmission and non-real-time image transmission can be provided in border areas, foreign travel areas, areas without other communication manners and areas, where communication manners are inconvenient to use.

The invention belongs to the field of high-power microwaves, and discloses a magnetic field structure of an integrated segmented internal and external saw-toothed special-shaped section solenoid. The magnetic field structure comprises an integrated segmented solenoid skeleton, wherein the integrated segmented solenoid skeleton includes a segmented front solenoid and a segmented rear solenoid, and an inserted waveguide slot is formed in the segmented part of the segmented front solenoid and the segmented rear solenoid; a coil package is wound on the surface of the integrated segmented solenoid skeleton, an insulated support gasket is arranged between the surface of the integrated segmented solenoid skeleton and the coil package, and the insulated support gasket is arranged in the coil package. According to the magnetic field structure disclosed by the invention, by adopting the internal and external saw-toothed solenoid winding area, high field strength can be provided, a high-uniformity magnetic field can also be provided at the segmented part, and meanwhile, the range of homogeneous areas can be enlarged; and by adopting the integrated mechanical design, the feeding waveguide can be inserted into the homogeneous area, and convenient assembly can be achieved.

The invention discloses a heuristic type behavioral parameter analysis algorithm, which mainly solves the problems that in the prior art, the false alarm rate of judging risk by a static heuristic method is relatively high, and the needs of people cannot be met. The heuristic type behavioral parameter analysis algorithm comprises the following steps of recurring a disk traversing file, and filtering a non-PE formatted file; establishing a rule base which is matched with a parsing engine, carrying out static heuristic analysis on all PE formatted files by using the parsing engine, and summarizing and calculating malicious weight numbers of all suspicious acts of the PE formatted files; calculating a heuristic alarm threshold value basing on a Liapunov central-limit theorem; judging whether the malicious weight numbers of the PE formatted file are higher than an alarm threshold value or not, carrying out alarm on the PE formatted files if so, and carrying out file traversing again until the file traversing is over if not. Through the technical scheme, according to the heuristic type behavioral parameter analysis algorithm disclosed by the invention, the purposes of flexibly adjusting scan sensitivity and reducing the false alarm rate are achieved, and the practical value and the promotion value are very high.

The invention relates to a manufacturing method of functional vacuum glass, which comprises the following steps: (1) placing vacuum glass on an operating console, and uniformly placing supports on the upper surface of the vacuum glass at intervals; (2) placing a frame at four sides of the vacuum glass, wherein the upper end surface and the lower end surface of the frame is uniformly coated with low-melting glass powder; (3) forming at least one through hole communicated with a cavity in the frame, placing a glass tube on the through hole, and filling glass powder at the periphery of the glass tube; (4) laminating plate glass and the vacuum glass; and (5) placing into a heating furnace, heating to 300-500 DEG C to melt the low-melting glass, cooling, and then sealing to form the functional vacuum glass provided with the glass tube and the hollow sealing cavity. According to the invention, the vacuum glass is organically combined with the functional glass to form combined glass, thereby achieving high sound insulation and heat insulation effects of the vacuum glass and properties of the hollow glass and functional glass, and widening the technical field of glass.

The invention discloses and provides acquisition control equipment which is reasonable in design, saves the cost, improves the application efficiency, reduces the project implementation complexity andcan realize large-quantity data acquisition. The equipment comprises a data acquisition host (1) and at least one acquisition module (2); the data acquisition host (1) is connected with the acquisition modules (2); each acquisition module (2) is connected with at least one sensor (3); the data acquisition host (1) is in wired or wireless connection with the at least one acquisition module (2). The invention belongs to the field of data acquisition.

The invention discloses novel vacuum coating equipment combining double evaporation sources and a plasma coating source, which comprises a vacuum chamber, an unwinding system and a winding system which are arranged in the vacuum chamber, double coating rollers are arranged between the unwinding system and the winding system, and a gas separation plate is arranged in the vacuum chamber. The gas separation plate divides the interior of the vacuum chamber into a plasma coating source chamber and an evaporation coating chamber, the double coating rollers are arranged in the plasma coating source chamber, and a film base material is output from the unwinding system, enters the plasma coating source chamber and the evaporation coating chamber, bypasses the double coating rollers and then is rewound on the winding system. According to the novel vacuum coating equipment combined with the double evaporation sources and the plasma coating source, composite evaporation coating and plasma coating source film forming are integrated, the coating mode that plasma coating source film forming and thermal evaporation are alternated is achieved, the uniformity and binding force of a film layer are improved, coating is conducted in a reciprocating mode, and the coating efficiency is improved. The deposition of the coating thickness is accelerated, and the coating speed and the production efficiency are improved.

The invention discloses an eight-frequency band reconfigurable intelligent mobile phone antenna, and mainly solves the problems of failure in designing a small-size, low-section and multiple-frequency wideband intelligent mobile phone antenna in a given environment in the prior art, and failure in meeting the technical development requirement. The eight-frequency band reconfigurable intelligent mobile phone antenna comprises a housing, a dielectric plate in the housing, a metal plate on one surface of the dielectric plate, and further comprises a second bent metal strip group and a first bent metal strip group, wherein both the second bent metal strip group and the first bent metal strip group are arranged on the other surface of the dielectric plate; a feeding point (1) is connected to the first bent metal strip group; the first bent metal strip group as well as the second bent metal strip group comprises at least two metal strips, a diode, a patch inductor and a patch capacitor; the diode, the patch inductor and the patch capacitor are connected between the metal strips. According to the scheme, the purposes of miniaturization, eight working frequency covering capability and higher performance-price ratio are realized; the utility value and the popularization value are higher.

The invention belongs to the field of high-power microwaves, and discloses a magnetic field structure of an integrated segmented internal and external saw-toothed special-shaped section solenoid. The magnetic field structure comprises an integrated segmented solenoid skeleton, wherein the integrated segmented solenoid skeleton includes a segmented front solenoid and a segmented rear solenoid, and an inserted waveguide slot is formed in the segmented part of the segmented front solenoid and the segmented rear solenoid; a coil package is wound on the surface of the integrated segmented solenoid skeleton, an insulated support gasket is arranged between the surface of the integrated segmented solenoid skeleton and the coil package, and the insulated support gasket is arranged in the coil package. According to the magnetic field structure disclosed by the invention, by adopting the internal and external saw-toothed solenoid winding area, high field strength can be provided, a high-uniformity magnetic field can also be provided at the segmented part, and meanwhile, the range of homogeneous areas can be enlarged; and by adopting the integrated mechanical design, the feeding waveguide can be inserted into the homogeneous area, and convenient assembly can be achieved.

The invention provides a network port transformer adopting an electronic circuit structure to replace a magnetic core coil. The network port transformer comprises a coupling module, a filtering module and a protecting module; the coupling module is used for carrying out bidirectional coupling on high-speed network signals and isolating DC (Direct Current) signals; the coupling module adopts a capacitive coupling mode, the coupling module is provided with a plurality of groups of capacitive coupling units, and each capacitive coupling unit is respectively provided with a group of capacitance bodies; the filtering module is used for filtering high-frequency useless signals in the network signals; and the filtering module adopts a Bessel type stop band filter and / or a quasi Bessel type TRACE filtering structure. The network port transformer adopts the electronic circuit structure to achieve functions of coupling, filtration and protection of the transformer and completely replace a conventional magnetic core coil structure, and is a basic novel network port transformer which is suitable for automatic production and is low in labor cost, high in qualified rate of finished products and strong in competitiveness.

The invention discloses a fast-response redundant membrane type thermocouple, comprising a stagnation cover. An air inlet is formed in one side of the stagnation cover; an air outlet is formed in theupper end of the stagnation cover; and a connecting seat is installed at one side of stagnation cover. A connecting port is formed in the connecting seat. A fixed base is arranged in the inner cavityof the stagnation cover; and one end of the fixed seat is connected with one side of the connecting seat. The space between the two sides of the fixed seat and the inner side of the stagnation cover is filled with high temperature cement. A lead protection tube is arranged inside the fixed seat; and a lead penetrates the inside of the lead protection tube. A sandwich structure is connected to theother end of the fixed seat and is connected with a lead. On the basis of the novel structure, the thermocouple has advantages of fast sensor response, large temperature measurement range, and high measurement precision. The necessary testing way is provided for domestication of the existing new-generation high-power combustion gas turbine; and the demand of development of the combustion gas turbine technology is satisfied.