6493results about How to "No loss" patented technology

The invention discloses a battery management system with balanced charge and discharge functions and a control method thereof, relating to a battery management system of a dynamic battery pack. The battery management system is structurally characterized in that a central processing unit (CPU) control unit is connected with a battery and relay set so as to detect the working condition of the battery and relay set; the CPU control unit and a balanced discharge module are successively connected with the battery and relay set so as to control the balanced discharge of the battery and the relay set; the CPU control unit, a balanced charge module and the battery and the relay set are successively connected so as to control the balanced charge of the battery and relay set; and a super-capacitor is connected with the balanced discharge module so as to store the discharge energy of the battery and relay set for supplying power for the battery management system. The battery management system can be widely applied to management of various battery packs such as a lead-acid battery, a lithium battery, a nickel-metal hydride battery and the like, supports the expansion of a lower computer, and can conveniently detect and monitor the conditions of multiple batteries.

An optical fiber includes: a core at a center; a first cladding layer; a second cladding layer; and a third cladding layer. A maximum refractive index of the core is greater than any of maximum refractive indices of the first cladding layer, the second cladding layer, and the third cladding layer, and the maximum refractive index of the second cladding layer is smaller than any of the maximum refractive indices of the first and the third cladding layer. Additionally, a ratio of a2 / a1 is not less than about 2.5 and not more than about 4.5, where a1 represents the radius of the core, and a2 represents the radius of an outer periphery of the first cladding layer, and a relative refractive index difference of the core with respect to a maximum refractive index of the third cladding layer is not less than 0.20% and not more than 0.70%.

A low-loss, high-efficiency, broadband antenna including both electric and magnetic dipole radiators is provided herein. The broadband antenna may be referred to as a “P×M antenna” and may generally include a ground plane; a magnetic radiator formed within the ground plane; a conductive feed arranged within a first plane, which is parallel to the ground plane; and an electric radiator arranged within a second plane, which is perpendicular to the ground plane and coupled at one end to the conductive feed. According to a particular aspect of the invention, the electric and magnetic radiators are substantially complementary to one another and are coupled for producing a P×M radiation pattern over a broad range of operating frequencies. One advantage of the P×M antenna described herein is that the complementary antenna elements are combined without the use of a lossy, resistive matching network, thereby increasing the efficiency with which the P×M radiation pattern is produced.

The invention discloses a method for quickly measuring a blade of a large-sized water turbine, which is characterized by comprising the following steps: firstly, sticking a mark point to the surface of the blade, then shooting a group of photos from different angles as measured primary data, and inputting the data to a computer to carry out analytic processing; by carrying out image detection for the group of photos in a measurement software, identifying the mark point in each photo and positioning the center of the mark point, and matching the mark points with the same name; finally, reconstructing a three-dimensional coordinate of corresponding object points according to a plurality of two-dimensional coordinates of the mark points, fitting a sparse framework model of a target by the reconstructed three-dimensional mark points, then scanning the surface of the blade block by block by using a binocular grating scanning method to acquire a local dense point cloud, and aligning the dense point cloud to an overall coordinate system according to the local mark points to acquire a dense point model of the blade; and by comparing the dense point model with a CAD designed model after aligning, calculating a three-dimensional processing error of the surface of a workpiece.

The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Rubber products, particularly tires, compounded with the inventive silica masterbatch can be processed for a long time before scorching because the silica masterbatch provides a long scorch time.

This invention provides a vision system camera, and associated methods of operation, having a multi-core processor, high-speed, high-resolution imager, FOVE, auto-focus lens and imager-connected pre-processor to pre-process image data provides the acquisition and processing speed, as well as the image resolution that are highly desirable in a wide range of applications. This arrangement effectively scans objects that require a wide field of view, vary in size and move relatively quickly with respect to the system field of view. This vision system provides a physical package with a wide variety of physical interconnections to support various options and control functions. The package effectively dissipates internally generated heat by arranging components to optimize heat transfer to the ambient environment and includes dissipating structure (e.g. fins) to facilitate such transfer. The system also enables a wide range of multi-core processes to optimize and load-balance both image processing and system operation (i.e. auto-regulation tasks).

The invention relates to an optimized human face recognition preprocessing method. The method comprises the following steps: firstly, converting a color human face image from a camera into a gray level image, then performing a scale normalization processing on the gray level image to cause the human face images to have the same size and posture, dividing the human face images into low-frequency components and high-frequency components by wavelet transformation, performing a histogram equalization processing on the low-frequency components only, executing wavelet reconstruction on the processed low-frequency components and the high-frequency components, and finally processing the reconstructed images by optimized median filtering. The method has the advantages of regulating the gray level range of the human face images, enhancing the contrast, better improving the human face gray level images with higher brightness, and enhancing the human face identification efficiency in a complicated illumination environment with different postures.

The invention relates to a sublevel open-stop and delayed filling mining method. According to the method, cutting crosscuts are wholly undercut along the width of chambers and pillars so that the space of scope rock drilling is shared with ore drawing, drilling operations of vertical parallel blast holes are achieved in undercutting space, positioning accuracy of drilling the vertical parallel blast holes is high, the intervals among the blast holes are even, and the defect of high blasting boulder yield caused by drilling sector blast holes in traditional rock drilling cross cuts is avoided; during chamber (or pillar) scoping, driving of ore drawing gateways and ore drawing admission passages in fill materials of adjacent pillars (or chambers) isn't needed, and accordingly the safety is improved; simultaneously, ores are directly drawn from the undercutting space of the chambers and the pillars, the space of ore drawing is large, mutual interference is small, ore drawing efficiency is high, and ores are drawn completely without any dead space and secondary ore loss; artificial sill pillars are constructed, ore sill plates aren't needed to be reserved, the ores are free of primary loss, and the rate of resource recycling is high. Barren rocks and ore beneficiation tailings are used for filling gobs, the barren rocks are not taken out of pits, constructions of tailing dams and barren rock yards are reduced, and land occupation is small.

An antenna coil 10 comprises an air-core coil 12 which is wound helically in a plane and a plate magnetic core member 13 which is inserted in the air-core coil 12 so as to be approximately parallel with a plane of the air-core coil 12. The magnetic core member 13 is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member 13 is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member 13 is a magnetic coating which is formed by applying and drying the composite member. A non-magnetic conductive plate 14 which has a conductivity is layered on a surface of the air-core coil 12 through which the magnetic core member 13 is inserted. The conductive plate 14 is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. By doing this, it is operated by relatively high frequency while it is rigid relatively.

The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Rubber products, particularly tires, compounded with the inventive silica masterbatch can be processed for a long time before scorching because the silica masterbatch provides a long scorch time.

The invention relates to a preparation process of continuous casting slab high-temperature oxidation resistant coatings, which is characterized in that less than 120 meshes of powder, reductant containing carbon, inorganic binders, surfactants, suspending agents and the like with the compositions such as 25-55 wt% SiO2, 10-20 wt% Al203, 11-23 wt% MgO and the like are respectively grinded and mixed evenly, then water is used to be mixed and stirred sufficiently evenly, and finally the density of the coatings are adjusted within 1200-1500 kg / m3. The coatings can not only be sprayed onto continuous casting slabs at normal temperature, but also be sprayed onto high-temperature casting slabs, form continuous whole protective coating layers under the action of high temperature, effectively reduce temperature drop of the casting slabs and oxidation burning loss in even heating process of a heating furnace without changing original performance of matrixes, and effectively decrease dilution of alloying elements on the surfaces of the casting slabs. After the casting slabs are out of the heating furnace, natural spalling capability of the coating layers is strong, and oxidation matrixes of the casting slabs are smooth. Raw materials of the oxidation resistant coatings are easy to be obtained, and the coatings have low cost and simple preparation process and are adaptable to oxidation resistance for various steels when being heated at 700-1300 DEG C / 2-8 hours.

The invention discloses a method used for measuring the content of gasoline olefin on the basis of Raman spectra, sequentially comprising the steps as follows: the content of olefin in a training sample is measured by a fluorescent indicator adsorption method or a multidimensional gas chromatography; the Raman spectra of the training sample is measured; the measured Raman spectra is preprocessed by smooth filtration, benchmark line correction and standard normalization; a gasoline olefin content correction model is established by applying a least squares support vector machine on the Raman spectra of the preprocessed training sample and the measured olefin content; the Raman spectra of the oil sample to be measured is measured and the Raman spectra is preprocessed by smooth filtration, benchmark line correction and standard normalization; and the olefin content of the oil sample to be measured is calculated according to the correction model. The method combines the Raman spectra with the least squares support vector machine to analyze the content of the olefin in the gasoline, obviously improves the detection precision, greatly shortens the measurement time simultaneously, has no consumption of the sample during the measurement process, and has important significance on the quality control during the oil processing.

The invention relates to a method for precisely calibrating the arrival moment of initial wave head of traveling wave in transmission line faults by utilizing Hilbert-Huang transformation (HHT). The method comprises the following steps that: HHT transformation is carried out to faulty traveling wave data; EMD decomposition is carried out first, and IMF1 component intensively embodies the high frequency information of raw data and completely self-adapts to the time scale of the raw data; the IMF1 component is taken as an investigation object; an order difference curve of the IMF1 component is evaluated, and Hilbert transformation is carried out to the order difference curve so as to obtain an instantaneous frequency curve of the IMF1 component; the advantages of two curves are combined to seek an extreme point, and the extreme point is compared with the raw data to obtain the precise calibration for the arrival moment of the head of a traveling wave, and error is controlled to be less than one sampling point. In a strong-noise environment, IMF2 or IMF3 is selected, and the precise calibration for the arrival moment of the head of the traveling wave can be achieved as well according to the method. All the other mathematical methods cannot achieve the precision of the method of the invention. Principle analysis, simulation data and engineering data verification show that the method is precise to calibrate the arrival moment of the initial wave head of the traveling wave in transmission line faults.

The invention belongs to non-imaging optical technical field, especially relates to a design method aiming at a spot light source (such as LED) light distribution lens. The invention adopts a free curved surface design method, selects an appropriate energy corresponding relationship, sets a reasonable structure form of the lens, under assistance of the computer, can design the lens satisfying the requirement, after the light source passes through the light distribution lens, the light spot can reach to the expected distribution, such as an even rectangle light spot. The certain surface of the light distribution surface (inner surface or outer surface) is a free curved surface and is generated by the calculated numerical value points. The light distribution lens can be made by injection moulding machining with optical resin and so on materials, the method comprises: arranging the spot light source on the center of the inner surface of the light distribution lens and taking the combination as a unit; increasing or decreasing the unit numbers of the units according to the light energies required by the target surface. In addition, the light distribution lens can also be made into an array form to enable the one light distribution lens to be provided with a plurality of lens units.

The invention discloses a parameter sending method and device. The method comprises the steps that a network side distributes parameters used for generating DMRS sequences of demodulation reference signals to a user side, the parameters comprise system bandwidth, resource block indexes, circulating shift indexes and DMRS basic sequence indexes, and the network side sends the generated parameters to the user side. The invention further discloses an uplink demodulation reference signal emission method and device. The method comprises the steps that the user side receives the parameters sent by the network side and used for generating the DMRS sequences, the parameters comprise the system bandwidth, the resource block indexes, the circulating shift indexes and the DMRS basic sequence indexes, and the user side determines the corresponding DMRS sequences according to the received parameters and transmits the DMRS sequences on corresponding physical resources. According to the method and the device, DMRS orthogonality of more than two users with the bandwidth parts overlapped can be supported, and application and performance are not limited by the moving speed of the users.

The invention discloses graphene aerogel and a preparation method thereof. The method comprises the following steps: (1) uniformly mixing graphene oxide dispersion liquid with an amine water-soluble compound to obtain graphene oxide mixed liquid, wherein the amine water-soluble compound is selected from one or more of diethylamine, ethidene diamine, propane diamine, butane diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, allylamine polymer and N,N'-bis(2-aminoethyl)-1,3-propane diamine; (2) irradiating the graphene oxide mixed liquid by high-energy rays under the anaerobic condition to obtain amino-modified graphene aerogel; (3) performing freeze-drying or supercritical CO2 drying to obtain the graphene aerogel. The graphene aerogel adopts a porous and macroporous structure, is relatively uniform in structure, and can be used for adsorbing an organic solvent; moreover, the preparation method is simple and environment-friendly.

Topical composition containing at least one comminuted product of elicited dedifferentiated plant cells, whereby said dedifferentiated plant cells are elicited in vitro in a culture in order to synthesise at least one phytoalexin, and whereby the communited product of elicited dedifferentiated plant cells are dispersed in said composition.

An automatic bias controller for an optical modulator is provided. The automatic bias controller comprises a driver for providing an electrical data signal to the modulator and bias means for providing a bias voltage to the modulator. A microprocessor provides a low frequency digital modulation signal, which is converted to an analogue modulation signal by a digital to analogue converter. The analogue modulation signal is applied to the bias means (so as to modulate the bias voltage) or to the driver (so as to modulate the amplitude of the data signal). Intensity detection means for detecting the intensity of light emitted by the modulator are provided, and an analogue to digital converter converts the output of the intensity detection means to a digital intensity signal which is passed to the microprocessor. The digital intensity signal is analysed, and the bias means instructed to adjust the bias voltage on the basis of the analysed signal. The digital modulation signal is preferably a rectangular wave or time multiplexed series of periods in which the bias voltage and data signal amplitude are varied.

The invention provides a medical high-strength titanium alloy wire and a preparation method thereof and relates to component control of a Ti-6Al-4V titanium alloy wire having high strength and good cold molding characteristic and a preparation method thereof. The component control of the Ti-6Al-4V titanium alloy wire is as follows: based on weight percent, 6.0%-6.3% of main element Al, 4.2%-4.5% of V, 0.13-0.15% of interstitial element O and 0.08%-0.12% of Fe. The alloy obtained according to the component control is subjected to smelting, cogging and forging, multiple heating numbers of upsetting and forging, large-deformation rolling, temperature-control hot drawing, stress relief annealing, electric heating straightening and grinding processes so as to prepare the high-strength titanium alloy wire. The Ti-6Al-4V titanium alloy can obtain high strength (tensile strength of more than or equal to 1200Mpa and elongation A of more than or equal to 8%) and excellent plasticity, and can be applied to a medical Kirschner wire fixing system.

The invention provides a method for artificially synthesizing high-purity carborundum powder used for growing semiconductor single crystal. The method comprises the following steps of: (1) taking Si powder and C powder according to a mol ratio of 1 to 1; (2) putting the Si powder and the C powder into a crucible after the Si powder and the C powder are mixed uniformly, putting the crucible in a medium frequency induction heating furnace, vacuumizing a growth chamber of the heating furnace, and increasing the temperature to 1000 DEG C; charging high-purity argon gas, helium gas or mixture of argon gas and hydrogen into the growth chamber, heating the mixed gas up to a synthetic temperature of 1000 DEG C, and reducing the synthetic temperature to room temperature after maintaining for certain reaction time; (3) uniformly mixing powder of a product acquired in the primary synthesis, heating the product up to a secondary synthetic temperature of between 1600 and 2000 DEG C, synthesizing for 2 to 10 hours, and reducing the synthesized product to the room temperature to acquire high-purity SiC powder lot applicable to the semiconductor SiC single crystal growth. The method adopts a secondary synthetic method, not only can ensure that Si and C simple substance which are remained during the primary synthesis can completely react, but also can effectively remove most impurity elements carried in the Si powder and the C powder.

The invention relates to a high-precision and constant temperature and humidity cabinet, which is used for storing special articles. The temperature and humidity in the cabinet can be controlled within designated scope automatically and constantly. In the invention, a cooling / heating semiconductor high-temperature stacking is used as a temperature control and dehumidification executive component, an ultrasonic wave humidifier is used as a humidification executive component, and an electric temperature / humidity sensor, a series of fans, keys, a display, a controller and the like are mounted, thereby realizing constant temperature and humidity. When temperature inside the cabinet is higher than preset target temperature, the temperature control semiconductor high-temperature stacking generates forward current to reduce the temperature inside the cabinet; when temperature inside the cabinet is lower than the preset target temperature, the temperature control semiconductor high-temperature stacking generates reverse current to raise the temperature inside the cabinet to the preset target temperature; when humidity inside the cabinet is higher than preset target humidity, the dehumidification semiconductor high-temperature stacking generates forward current to reduce the temperature of a condensation block in the cabinet to be below the dew point, so as to enable moisture in the cabinet to condensate and flow into a water tank to realize dehumidification effect; and when humidity inside the cabinet is lower than preset target humidity, an ultrasonic wave humidifier sprays water mist to raise the humidity in the cabinet to the preset target humidity.

The ball forming mechanism of ball rolling machine for rolling metal rod, especially copper rod, into ball in the required size includes one frame, one pair of rotating drum seats in the lower part of the frame, one pair of rotating drums, one pair of ball forming rollers matching the rotating drums and with spindle set via two bearing seats on the frame. The ball forming process has high efficiency and no material loss, and the formed ball has high sphericity, smooth surface and high density.

The invention discloses a gravity energy storing system relying on a massif. The gravity energy storing system comprises a high-altitude stacking platform, a low-altitude stacking platform, a plurality of standard weights, electric power increasing and generating devices and a control system. The position between the high-altitude stacking platform and the low-altitude stacking platform is paved with at least two inclined tracks, each inclined track is provided with at least one section of continuous track and each section of continuous track is provided with one set of electric power increasing and generating device. Each set of electric power increasing and generating device comprises a trailer, a cable, a cable winch and an electric generating all-in-one machine, wherein the trailer is arranged on the corresponding continuous track and connected with one end of the cable, the cable winch is installed on the edge of the platform at the end of the corresponding continuous track, and the cable winch is connected with the electric generating all-in-one machine. The control system controls the working conditions of transferring, transporting and stacking equipment and the electric power generating all-in-one machine. The gravity energy storing system is high in efficiency, low in cost, small in occupied space and high in safety coefficient.

The invention discloses an infrared laser pointer remote pointing and virtual touch system which is characterized in that the system is composed of a computer system, an infrared laser pointer, an image acquisition device and an image identification positioning module; the computer system comprises a display device and a mainframe computer; the infrared laser pointer is provided with an infrared laser emitting key and can emit an infrared laser to point to a display screen; the image acquisition device is arranged in front of the display device to completely contain the display screen in the viewfinder range; the image identification positioning module identifies an infrared laser point and the position thereof in the display screen according to the acquired image, differentiates different operations including light spot instruction, light spot movement and clicking according to the time length and the times of the infrared laser, controls the computer system to generate a light spot at the corresponding position on the display screen and completes the corresponding operation. The invention is especially suitable for large-screen display equipment.

The invention discloses a catalyst system for preparing vinyl chloride by hydrochlorinating acetylene, and preparation and application thereof. The catalyst system comprises a catalyst carrier and a catalyst, wherein the catalyst carrier is pyridine ionic liquid, and the catalyst is one or any combination of more than two of tin, palladium, gold, copper, manganese, bismuth, mercury and rhodium. The preparation method for the catalyst system comprises a step of dissolving the catalyst in the catalyst carrier. Acetylene gas and hydrogen chloride gas are mixed and then reacted in the presence of the catalyst system. The preparation process realizes a liquid phase reaction for preparing the vinyl chloride by hydrochlorinating the acetylene, avoids the loss of the catalyst system, is more environment-friendly and safer, and improves the conversion rate of the acetylene and the selectivity of the vinyl chloride.

The invention discloses a solar energy storage, ventilation and heating system, which comprises a heat storage wall composed of a heat-insulation layer, a heat storage layer and an aluminum plate painted with black paint, a heat storage ventilation channel or a combination thereof, which are sequentially arranged on the outer side of the external wall of a building; a transparent cover plate arranged on the outer side of the heat storage wall or the heat storage ventilation channel; an air sandwich between the transparent cover plate and the heat storage wall; and an upper vent and a lower vent having valves and arranged on the transparent cover plate and the heat storage wall. The solar energy storage, ventilation and heating system can achieve intermittent ventilation and heating without consuming non-renewable energy by using the special heat absorption and release functions of a phase-change heat storage material and by controlling the valves of the vents. The system has the advantages of energy conservation, environmental protection, simple control and handsome structure, and can be widely used for common residential buildings and public buildings.

The invention discloses an IOT based equipment authentication method, device and system, and relates to the field of authentication of IOT terminals and servers. In order to guarantee the safety of an IOT system and the authentication effectiveness, a remote management platform generates a first message when receiving a bidirectional authentication request of IOT equipment; an IOT equipment message and the generated first message are sent to an authentication center; the authentication center seeks a root key message K corresponding to the IOT equipment according to the IOT equipment message, generates a bidirectional authentication message according to the root key message and the first message and returns the bidirectional authentication message to the remote management platform; and the remote management platform finishes bidirectional authentication according to the bidirectional authentication message and the IOT equipment. According to the provided method and system, only legal IOT equipment can be accessed to the management platform, illegal equipment can be prevented from being accessed, and simultaneously, the legitimate right of a user using the IOT equipment can be protected from loss.

The invention discloses a PCC (Large Diameter Pipe Pile by using Cast-in-place Concrete) energy pile. The PCC energy pile comprises a PCC pile, a heat conducting liquid, a cover plate, a bottom plate, a heat conducting pipe, a heat collecting device and an inspection channel, wherein the bottom of the PCC pile is fully closed; a cover plate with holes is arranged at the top of the PCC pile; prepared holes are formed in one side at the upper part of the PCC pile; the heat conducting liquid is filled up in a cavity in the PCC pile; the heat conducting pipe penetrates through the holes in the cover plate and extends into the heat conducting liquid in the cavity in the PCC pile; the heat conducting pipe extending into the cavity in the PCC pile can adopt opened and closed modes; the inspection channel is formed in the side wall of the PCC pile; and the heat conducting pipe is led out of the cavity in the PCC pile through the holes in the cover plate or the inspection channel and connected with the heat collecting device to form a circulating channel of the heat conducting liquid. The invention further discloses a manufacturing method for the pile. The manufacturing method comprises the technical steps as follows: pouring the PCC pile; excavating pile core soil; making a bottom plate; mounting the heat conducting pipe and the cover plate; filling the heat conducting liquid; and starting a ground heat pump for forming a loop. The PCC energy pile is convenient to overhaul and maintain, wide in application range and low in construction cost, does not influence the bearing capacity, and is an economic, efficient, energy-saving and emission-reducing pile.

A backlight unit, which can emit one of s-polarized light and p-polarized light using wire-grid polarizer, and a liquid crystal display apparatus employing the backlight unit are provided. The backlight unit includes: a light source radiating light; a light guide plate disposed with the light source at a lateral side of the light guide plate, guiding the light incident on the lateral side from the light source; a wire-grid polarizer formed on a predetermined layer of the light guide plate transmitting a first polarized component of the light through the predetermined layer and reflecting a second polarized component of light; a reflector reflecting the light to un upper surface of the light guide plate; and a polarization converter changing a polarization of the light not emitted through the upper surface of the light guide plate.