59results about How to "Wide range of needs" patented technology

The invention discloses a wave length demodulating system based on an F-P etalon and reference gratings. According to optical path connection, a broadband light source passes through an isolator and is connected with a tunable F-P filter, light out of the tunable F-P filter enters a coupler and is evenly divided into two paths, and one path enters the F-P etalon, and then enters a first photoelectric detector; the other path is output to a first reference fiber bragg grating, a second reference fiber bragg grating and a sensing fiber bragg grating through an optical circulator, the first reference fiber bragg grating, the second reference fiber bragg grating and the sensing fiber bragg grating are connected in series, reflected light of the fiber bragg gratings passes through the optical circulator and enters a second photoelectric detector, and finally two paths of data are synchronously sampled through a PC. According to a wave length demodulating method based on the F-P etalon and the reference gratings, the tunable F-P filter is controlled by the PC; synchronous data collection is carried out on spectrums of two channels; peak searching calculation is carried out on data collected from the two channels; the sensing optical grating is obtained through calculation. The wave length of the sensing optical grating can be demodulated fast and accurately through the F-P etalon and the reference gratings.

The invention discloses a solar selective absorbing film series suitable for medium-high temperature heat usage and a preparation method of the solar selective absorbing film series suitable for the medium-high temperature heat usage. The solar selective absorbing film series comprises infrared high-reflective silver film plated on a metal base bottom, copper film, titanium aluminum nitrogen oxygen film, zinc tin antimony oxide film and silica film from top to bottom in sequence. Solar energy absorbance of the absorbing film series is larger than 96 percent, emittance is smaller than 2 percent, and the absorbing film series has the advantages of being super-low in emittance and high in photothermal conversion efficiency. Film plating rate of the zinc tin antimony oxide materials in the film series is high, and improvement of producing efficiency is benefited. The absorbing film series can be widely used in heat collectors of solar energy photothermal conversion, suitable for application of solar heat usage in construction integrated products, and especially suitable for wide application of medium-high temperature solar energy heat usage products. The solar selective absorbing film series suitable for medium-high temperature heat usage can be continuously plated on a base bottom with a large area through an industrialized magnetic control sputtering preparing method, and low-cost large-scale high-efficient producing is achieved.

The invention discloses an automatic detection method for cracks of a concrete member. The automatic detection method comprises the following steps: S1, obtaining a plurality of pieces of crack images of the concrete member; S2, carrying out recognition processing on the crack images by adopting a mathematic morphologic method through top-hat transform according to linearization and dark target characteristics of the cracks, so as to obtain new crack images containing crack information and non-crack information; S3, rapidly positioning and matching positions of the cracks in the processed crack images by adopting a stratification matching method based on an image Gaussian pyramid; synthesizing the processed adjacent crack images according to the positions of the cracks in sequence to obtain adjacent crack image synthetic images, and synthesizing until a crack distribution map of the concrete member, which contains all the crack information, is obtained; and S4, automatically generating a crack detection report of the concrete member according to physical parameters of the cracks in the crack distribution map. According to the automatic detection method disclosed by the invention, the detection efficiency and the detection speed are improved, and manual risks and detection errors are reduced; and crack appearance characteristics on the surface of the concrete member can be rapidly and completely displayed again.

The invention discloses a voice spoofing attack detection method based on voice signal spectrum characteristics and deep learning. After a microphone of the electronic equipment receives a voice signal, signal processing work is carried out on voice, then specific features are extracted, finally, the marked features are input into a classifier of a deep convolutional neural network SE-ResNet to betrained, and the trained classifier is adopted to carry out voice living body detection on the voice signal to be detected. and a result of whether the voice is sent by the human voice or the voice attack is replayed is output. According to the invention, the voice spoofing attack represented by the replay attack for the speaker recognition system can be accurately and effectively detected.

The invention discloses a water-saving valve core of a faucet valve water economizer; the water-saving valve core can be used for linearly adjusting and cutting off, is most water-saving when being used for saving water and is largest in flow than any valve when being used for taking water. The water-saving valve core of the faucet valve water economizer is formed by a movable upper shunting piece and a movable lower shunting piece; the shunting pieces can be sleeved with and connected with selectable accessories in a matching mode; the selectable accessories can be a throttling sprayer or normal energy-saving members or special parts such as a bubbler. The water-saving valve core is simple in structure, scientific, reasonable, easy to manufacture, convenient to mount and use and multifunctional, and can be connected with multiple faucet valves and accessories in the matching mode. The water-saving valve core can be matched with a shell to mark, adjust, lock and control the flow and prevents improper water using, the preset functions and water outlet mode of the water-saving valve core can be limited to prevent a user from randomly changing the functions and purposes of the faucet valve, the water waste phenomenon is reduced, water is greatly saved, and the water-saving valve core is multifunctional and good in adaptivity and can be in a house and fields such as industry, agriculture and public occasions.

The invention relates to a resourceful treatment process of industrial high-concentration brine. The resourceful treatment process mainly comprises potassium sulfate solid preparation, sodium chloriderecovery and a water recovery technology. Firstly, sodium sulfate in the wastewater is converted into sodium chloride through an ion exchange resin device, then the sodium chloride is concentrated through a reverse osmosis membrane, permeate liquid can be reused in a production line, and trapped liquid is sodium chloride concentrated liquid and can be directly reused as desalted water; then the ion exchange resin is regenerated by using a potassium chloride solution, regenerated effluent is a high-concentration potassium sulfate solution and contains a small amount of potassium chloride, theregenerated effluent can be directly subjected to evaporative crystallization to obtain a potassium sulfate solid, and potassium chloride in crystallization mother liquor can be recycled as regenerated liquid. Compared with the prior art, the treatment process has the advantages that high-recovery-value potassium sulfate solids rather than sodium sulfate solids can be obtained while water and sodium chloride are recycled, resource recovery is achieved to the maximum extent in the whole process, and the treatment process is a sodium sulfate wastewater resource utilization technology with highereconomic benefits.

An unmanned aircraft comprises an aircraft body, fixed wings fixed to the two sides of the aircraft body and multiple rotors connected to the two sides of each fixed wing through rotor supporting parts. Rotor shafts of the unmanned aircraft do not need to rotate relative to the wings, so that complex mechanical components for controlling and adjusting rotation of the rotor shafts do not need to be configured, and compared with an existing tilting rotor aircraft, the aircraft is simpler in structure and smaller in weight. Meanwhile, a set of power devices, namely the rotors and motors corresponding to the rotors are adopted in the unmanned aircraft to achieve the functions of vertical take-off and landing and fixed wing modal cruising, and compared with an existing aircraft, the unmanned aircraft can supply larger weight and meet the requirements for the task load and the voyage endurance.

The invention provides a high-pressure rapid dust remover for a road, relates to the field of road dust removal of atmospheric haze management and particularly relates to the high-pressure rapid dust remover for the road. The high-pressure rapid dust remover comprises a dust collection chamber, wherein the dust collection chamber is internally provided with a high-pressure air blowing device and a low-pressure air dust collection pipeline; the low-pressure air dust collection pipeline penetrates through the dust collection chamber to be connected with a garbage separation device; the rear side of the garbage separation device is connected with a dust removing device; the high-pressure air blowing device is connected with a high-pressure air source; and a plurality of air blowing holes are formed in one face, facing a working opening, of the high-pressure air blowing device. The high-pressure rapid dust remover for the road is simple in structure, easy to produce and low in cost and can be carried on various types of road sweepers or road building machines; and dust on the road is blown off by utilizing the high-pressure air blowing device and the blown dust and garbage are conveyed to the garbage separation device by adopting the low-pressure air dust collection pipeline and then enter the dust removing device to be subjected to dust removal through low-pressure air of the garbage separation device, so that the road dust removing aim is realized, secondary dust-raised pollution is avoided and the dust removing effect is better.

The invention discloses a sewage treatment agent for treating blue algae pollution as well as a preparation method and application thereof. The sewage treatment agent for treating the blue algae pollution is prepared from the following raw materials in parts by weight: 16 to 26 parts of chromium picolinate, 12 to 23 parts of berberine, 4 to 9 parts of cineole, 2 to 8 parts of L-carnitine tartrate,5 to 12 parts of white tea extract, 4 to 8 parts of clove powder, and 1 to 5 parts of amber powder. A little amount of the sewage treatment agent of the invention can achieve an apparent treatment effect, the purifying speed is high, the treatment efficiency is high, the sewage treatment agent is demanded both at home and abroad, and the market prospect is promising.

The invention provides an annular wire stripper. The annular wire stripper comprises a holding assembly, a middle installing piece, a stripper tooth assembly, an annular cutting and longitudinal cutting assembly, a knife head travel control assembly, a stripper tooth brake assembly, four main pin shafts and a returning assembly. The holding assembly comprises four handles installed from top to bottom, the middle installing piece is installed between the two handles in the middle, and the stripper tooth assembly is installed in a center through hole through the four main pin shafts. The annular cutting and longitudinal cutting assembly comprises a knife body and a knife head, the knife head and most portions of the knife body are installed in the center through hole, and the knife head can rotate under the action of external force. The knife head travel control assembly is used for controlling the travel of the knife head. The stripper tooth brake assembly is used for clamping a cable to be stripped. The returning assembly is used for returning after stripping. The annular wire stripper has the annular cutting and longitudinal cutting functions, can effectively meet requirements for stripping the cable with an insulating layer and a protection layer, is convenient and fast to use, efficient and good in effect, substantially improves labor efficiency of electricians and reduces labor intensity of the electricians.

The invention discloses a chuck head of a hand-throwing toy and a chuck dart using same. The chuck is made of soft foaming composite material which has the following components: 35-45% of polyvinyl acetate, 10-20% of ethylene vinyl acetate, 10-20% of nitrile rubber, 5-15% of polyethylene and 15-25% of calcium carbonate; the invention also discloses a chuck dart using the chuck which provides more forceful guarantee for safety of children when playing; the dart can still stick to the chuck even if the surface thereof is relatively coarse; as a result, playing site and space for chuck-like toys is substantially expanded; the chuck can automatically comes off after sticking to the dart for a while, reducing dissatisfaction of parents; even if the dart is thrown at a very small angel, the chuck can still stick to the target dart, further increasing amusement.

The invention belongs to the technical field of sound pickup, and discloses a long-distance sound source positioning method and system based on a microphone array. The method comprises the following steps: 1, acquiring multiple paths of noisy signals, and preprocessing the multiple paths of noisy signals to obtain multiple paths of to-be-detected sound signals; 2, judging the current frame of anyone of the multiple paths of to-be-detected sound signals, if the signal-to-noise ratio of the current frame meets a first threshold value and the energy of the current frame meets a second thresholdvalue, obtaining the current frames of all the paths of to-be-detected sound signals, and executing the step 3; otherwise, returning to execute the step 2; 3, classifying the previous frames of all paths of to-be-detected sound signals to obtain the current frames of multiple paths of target sound source signals; 4, performing cross-correlation calculation on the multiple paths of target sound source signals to obtain a plurality of cross-power spectrums; and 5, obtaining the maximum value of the peak value in the cross-power spectrum, and performing angle backstepping according to the time delay corresponding to the maximum value of the peak value to obtain the direction information of the target sound source signal.

The invention relates to an underwater image processing system of a remote operated vehicle. The underwater image processing system comprises an image acquisition module, an FPGA module and a displaymodule; the image acquisition module comprises an LED light group and a camera module; the image acquisition module and the display module are both connected with the FPGA module; and underwater images are acquired by the image acquisition module, processed by the FPGA module and displayed by the display module. According to the underwater image processing system of the remote operated vehicle, the defects that an underwater image system is long in time delay, serious in underwater image color cast, capable of generating backward flashing of the underwater images, poor in underwater image contrast, low in brightness, large is size and high in energy consumption are overcome.

A robot veterinarian for the breeding industry comprises a walking mechanism, a hoisting guide rail, a multi-path data collector, a data forwarding device, a battery management unit and a monitor. A robot body is installed at the bottom of the walking mechanism which walks on the hoisting guide rail. The multi-path data collector, the data forwarding device, the battery management unit and the monitor are installed on the robot body. The battery management unit provides power for the walking mechanism, the multi-path data collector, the data forwarding device and the monitor. The battery management unit, a stepping motor driver and the multi-path data collector are in connection communication with a measure and control instrument. The measure and control instrument is connected with a robot veterinarian on-site intelligent monitoring system information platform through WiFi in the monitor. The intelligent comprehensive monitoring of site environment and animal growth and disease state of a livestock farm can be achieved, the management and disease prevention and treatment level of the breeding industry are remarkably improved through the timely service of an internet of things, a cloud storage and an expert system, and the comprehensive economic benefits are increased.

The invention discloses a colorful surface material distributing device and method, a surface material machine and a forming machine of colorful-surface-material tiles. Surface materials of needed colors are sequentially fed into main material cavities and auxiliary material cavities of a hopper correspondingly. A fence door capable of being opened and closed is arranged on one side of the hopper. The fence door is closed during feeding; after feeding, the fence door is opened and closed repeatedly so that a part of the surface materials on the upper side of the hopper are made to fall into a material cavity of a surface material trolley; and then, a hopper door located at the bottom of the hopper is slowly opened through an air cylinder, and the rest of the surface materials in the hopper is made to fall into a hopper of the surface material trolley. By the adoption of the colorful surface material distributing device and method, the surface material machine and the forming machine of the colorful-surface-material tiles, when the surface material trolley distributes the materials in a mold, the colors of the surface materials are mixed in a limited manner, and then colorful concrete floor tiles of changeable and unpredictable colors are manufactured.

The invention discloses an automatic storing and taking device for clothes dry cleaning and an application method of the device, and relates to an automatic storing and taking device and an application method. The device comprises a shell, a clothes storage mechanism, a clothes taking mechanism, a clothes placing mechanism, a rotary storing and taking mechanism, a counter top and a central control mechanism, wherein the clothes storage mechanism, the clothes taking mechanism and the counter top are arranged on the shell; the clothes placing mechanism is fixedly connected with the rotary storing and taking mechanism, and the clothes storage mechanism, the clothes taking mechanism and the rotary storing and taking mechanism are connected with the central control mechanism separately. The method comprises the steps that a user places clothes needing to be washed in a clothes storage bin, and a mobile phone number is input to generate a corresponding order; after the clothes are washed in a laundry, a payment instruction is sent to a mobile phone of the user, the user pays through an online payment platform and receives a starting password after payment is completed, the user obtains the clothes through the starting password, and then one time of clothes cleaning can be completed. By means of the device, the handover work between the user and the laundry is facilitated, the time warp problem is effectively compensated for, and market prospects are wide.

The invention discloses a voice spoofing attack detection method based on a sound field and a field pattern. The method comprises the following steps: collecting voice through double microphones, extracting to obtain double-track voice signals, respectively processing the double-track voice signals, and extracting field lines; collecting and processing to obtain field patterns of a plurality of voices of the same person, obtaining field pattern distribution of the person, and training by using a Gaussian mixture model; repeating the above steps on the to-be-detected voice of the unknown sounder to calculate the field pattern of the to-be-detected voice, processing the to-be-detected voice by using the trained Gaussian mixture model to obtain a similarity probability, and judging and detecting whether the to-be-detected voice is a voice spoofing attack or not according to the similarity probability. According to the invention, the spoofing attack for the voice authentication system canbe accurately and effectively detected.