2127results about How to "Free from destruction" patented technology

The invention provides a method and a system for measuring speed of moving targets, which aims to solve slow response and other problems of the prior speed measurement method. The method comprises the steps of utilizing the basic principles of projective geometry, determining pixel coordinates in images and the coordinate mapping relation of pixels in real space through a camera calibration technique, utilizing the mapping relation to detect sequence frame images acquired by cameras, calculating the coordinates of the moving targets in the images in the real space, obtaining the motion curves of the moving targets in the real space through target tracking and then estimating the speed of the moving targets. The speed measurement method based on camera calibration has the advantages of fast response, large amount of detected information and capability of estimating the speed of all vehicles within a monitoring range in real time. Moreover, as the speed measurement of vehicles can be realized by utilizing the cameras, the method is easy to implement, lower in cost and easy to popularize and apply.

The invention discloses a livestock and poultry anti-diarrheal feed additive and a preparation method thereof. In a technical scheme, the preparation method comprises the following steps of: smashing India quassiawood, dried ginger, licorice, costus root and the like; screening through a sieve; adding bean pulp, corn starch, bran and water to prepare a fermentation medium; adjusting the pH value,sterilizing, cooling, and inoculating for fermenting; and drying after the fermentation is finished to obtain the livestock and poultry anti-diarrheal feed additive. The livestock and poultry anti-diarrheal feed additive disclosed by the invention has the better functions of broad-spectrum bacterium resistance, virus resistance, parasite resistance, maintaining of the balance of microbial flora in the animal bodies, and can be used for effectively reducing the incidence of diarrheal of the livestock and poultry, promoting the growth of the livestock and poultry and reducing the cultivation investment; and the livestock and poultry anti-diarrheal feed additive has the characteristics of no toxic and side effects, no pollution, no residue, stable and reliable effect and the like, cannot give rise to drug tolerance, and can meet the requirement of people on safety production of the livestock and poultry products. The livestock and poultry anti-diarrheal feed additive disclosed by the invention also can be used as a veterinary drug in an increased dose manner, and has a remarkable curative effect for treating the diarrheal caused by various viruses, bacteria and parasitic infection for the livestock and poultry.

A system for monitoring a plumbing system having a plurality of fixtures includes a sensor vibrationally coupled to the plumbing system and a processor. The sensor detects a vibration produced by the plumbing system, and generates a signal representative of the vibration. The processor receives the signal, compares the signal to a signal database that associates each of a plurality of stored signals with operation of one or more of the fixtures, and determines that the associated fixture or group of fixtures has been operated based on the comparison. The processor also stores a record of the operation of the associated fixture or group of fixtures.

The invention provides a planet wheel type stair-climbing electric wheelchair. The wheelchair comprises a wheelchair frame, a chair backrest, an electric wheelchair controller, a battery, a caster, a front wheel assembly, a stair-climbing controller, a centering roller bearing, a centering bearing block, a conducting slip ring, a connecting disc, a wheel axle fixing component, two driving shafts, a direct-current turnover motor, an RV speed reducer, a pressure sensor, a control box, a tilt sensor, an anti-forerake bracket and two planet wheel groups, wherein the anti-forerake bracket is driven by an electric push rod; and the two planet wheel groups are driven by the direct-current turnover motor through the RV speed reducer and symmetrically distributed so as to realize the stair-climbing function of the electric wheelchair. In each of the planet wheel groups, special allocation of a hub motor and two free wheels is adopted; and the planet wheel groups can work in a manual mode, an electric wheelchair mode and a stair-climbing mode. In addition, in the wheelchair, the pressure sensor and the tilt sensor are used for feeding back the wheelchair running state when the electric wheelchair goes upstairs and downstairs.

The electronic industrial glass cleaning agent composition belongs to the field of electronic industrial cleaning technology. The cleaning agent consists of sodium metasilicate, sodium hydroxide, sodium carbonate, sodium bicarbonate, Pluronic polyol, CMC, fluoric surfactant, complexing agent, defoaming agent and deionized water. It is used to clean substrate glass and coated conducting glass. During the cleaning, the cleaning agent in 1-5 % is compounded with deionized water in 95-99 % to compound the cleaning liquid for showering or ultrasonic cleaning to eliminate pollutant on glass fastcompletely. It is used to replace strong acid and strong alkali cleaning agent and has no damage to glass surface and no corrosion to ITO film. The cleaning agent has no bad smell, no toxicity and no corrosion, and is safe, reliable, environment friendly and low in cost.

The invention discloses a forging method of a GH4169 alloy inner cartridge receiver special-shaped ring part. The forging method comprises the steps of sawing, upsetting, punching, chambering and rolling, wherein the forging method further comprises the step of mold formation after the rolling step. The forging method has the following beneficial effects: the forged ring part is finally formed by a mold; the subsequent machining margin of the obtained forged part is low; the material utilization rate is high; the production efficiency is high; and in addition, a mold forming process nearly damages the streamline of the forged part.

The invention relates to a hard polyurethane adiabatic heat-insulation foam material and a preparation method thereof. The material contains the following components: polyether glycol, polymethylene polyphenyl isocyanate, chopped glass fiber powder, physical foaming agent, water, fire retardant, catalyst and foam stabilizer. The preparation method comprises that the surface of the chopped glass fiber powder is treated through silane coupling agent; and the polyether glycol, polymethylene polyphenyl isocyanate and the surface-treated chopped glass fiber powder are dried, mixing treatment and polymerization foaming treatment are sequentially conducted thereafter, curing treatment is conducted after a pouring mould blank is obtained and the mould is removed, and finally hard polyurethane foam is obtained. Since the invention adopts the third-generation zero-ozone-consumption latent-energy hydrofluorocarbon foaming agent and the halogen-free high-efficiency fire retardant, the foam material has the advantages of environmental protection, low density and excellent compression property and is suitable for use in the heat insulation field.

The invention provides a method for detecting and evaluating deposits in a metal tube and a device thereof. The method comprises the steps: 1) knocking the exciting part of the metal tube through an exciting device to excite acoustic waves capable of reflecting the pulse response characteristics of the structural body; 2) sending and acquiring the excited acoustic wave signals through a microphone and a data acquisition card; 3) recording sounds through an acquisition software and storing the sounds in a computer; 4) carrying out wavelet packet analysis, time domain analysis and/or spectrum analysis on the signals, computing characteristic parameters such as energy value of each spectrum, duration of time domain signal and/or maximum resonance frequency amplitude of spectrogram of the wavelet packet analysis; and 5) inputting the characteristic parameters into a neural network expert diagnosis system for identification, determining whether the deposits exist in the tube or not and quantifying the deposits, and evaluating the plugging degree in the tube according to the quantification result. The device comprises an exciting device, a microphone, and a computer having a data acquisition card, wherein the microphone is fixed at the metal tube, and the microphone and the data acquisition card are connected with the computer host respectively.

The invention discloses a method for preparing a super-hydrophobic nano-magnetic thin film. The method comprises the following steps of: preparing nano iron oxide-silica core-shell particles; adding the nano iron oxide-silica core-shell particles into an alcohol solution, and adding a silane coupling agent and a catalyst to obtain nano iron oxide-silica core-shell particles of which the surfaces are modified by ethylene; and dispersing the surface modified nano iron oxide-silica core-shell particles in a benzene organic solvent, adding an initiator and styrene to obtain a nano iron oxide-silica-polystyrene composite material, dispersing the nano iron oxide-silica-polystyrene composite material through ultrasonic waves, and preparing the super-hydrophobic nano-magnetic thin film by using acasting method or a pulling method. The method has the advantages of simple preparation process and low cost, and can be applied to the fields such as magnetic recording, magnetic separation, biomedicines, environmental protection, military and the like.

The invention relates to the field of vibration control of a civil engineering structure, in particular to an assembled type current vortex tuned mass damper for a pedestrian bridge and a manufacturing method. A TMD rigidity element is formed by helical compression springs; TMD tuned mass blocks are connected in series through a plurality of steel plates, so that the maneuverability of the tuned mass damper which is artificially assembled is guaranteed; a TMD damping element is formed by a permanent magnet current vortex damper of which the magnetic circuit is optimized, is arranged in a tuned mass block steel plate chamber, and is compact in structure; the distances between permanent magnets fixed on a bottom plate and mass block steel plates are adjusted, so that the adjustment of TMD frequencies is realized. In addition, the integrated design of TMD is slender bar-shaped, the length of the TMD in the span direction of the pedestrian bridge is large, the lateral length of the TMD in the lateral width of the pedestrian bridge is small, and the TMD is conveniently mounted at railings of the pedestrian bridge, so that the influence of the TMD on the function and the appearance of the pedestrian bridge is reduced. The vertical current vortex damper TMD disclosed by the invention has the prominent characteristics of being compact in structure, easy in field assembly, good in durability, convenient to mount at the railings of the pedestrian bridge and the like, and the frequencies can be regulated continuously.

A method for continuous microwave expansion of cut tobacco comprises the following steps: impregnating the cut tobacco in an expanding agent; recycling the expanding agent in an impregnating device after impregnation; carrying out microwave expansion on the impregnated cut tobacco by a microwave dryer to obtain the expanded cut tobacco. The expanded cut tobacco comprises one or more than two components of ethanol with 4-12 carbon atoms, ketone with 4-12 carbon atoms, halogenether with 2-12 carbon atoms, alkane with 3-12 carbon atoms or alkane with 3-12 carbon atoms substituted by 2 halogen atoms. The filling value of the expanded cut tobacco reaches above 7.5, the cutting ratio is above 90%, the moisture content after expansion is 12-13%, the expansion of the cut tobacco is even without water damaged cut tobacco; the whole set of devices has low energy consumption and high automation, and continuous closed mass production can be carried out.

The invention emulates the actions and decisions of flagmen to control and to expedite traffic along a single lane past construction. The invention has two portable traffic signal light units with arms. One unit has a computer that controls the system, three video cameras, and two way radio communication. The other unit has three video cameras and radio communication to the unit. A remote control is also provided for starting and stopping the system along with a manual override of the system. A coding feature restricts starting, and stopping the system to users of the remote control. The system also protects itself against vandalism and functions during periods of obscured vision.

The invention discloses a method for nonlinear quantitative non-destructive inspection of bonding interface cohesive force using contact sound, wherein the base frequency signal generating system energizes a base frequency longitudinal wave energy converter to produce a longitudinal sound wave which is propagated in the composite material, contacting sound non-linearity will occur when reaching the bonding layer, the sound wave penetrating the bonding layer is received by the secondary harmonic longitudinal wave energy converter and transformed into electrical signal for display on a digital oscilloscope, obtaining base frequency and secondary harmonic frequency constituents through FFT, the energy converter calibration curve then converses them into sound amplitude, the crack width in the bonding layer is determined by the input sound amplitude when sound transmission is present, the input amplitude is set by the laser interferometer measurement or energy converter calibration curve, and the bonding force T0 is obtained through formula (2). The method can realize high sensitivity, reliable quantity value without damaging the bonding layer.

The invention discloses an automatic electric switch cabinet fire extinguishing system and a fire recognition method, wherein the automatic electric switch cabinet fire extinguishing system comprises a fire extinguishing agent nozzle which is arranged in an electric switch cabinet; the fire extinguishing agent nozzle is connected with a storage device in which a non-conducting fire extinguishing agent is stored through a pipeline; an electromagnetic valve which is controlled by a central controller is arranged on a pipeline; a photoelectric sensor is also arranged in the electric switch cabinet; and the photoelectric sensor outputs a detection signal to the central controller and then the central controller judges whether to open the electromagnetic valve. The automatic electric switch cabinet fire extinguishing system is capable of responding sudden electric fire and reducing the loss caused thereby. Fire extinguishing agents such as heptafluoropropane and superfine dry powder are used and non-conducting, so that secondary danger caused by conduction of fire extinguishing agents does not occur; and the fire extinguishing agents are environmental-friendly, so that the damage to the environment caused by conduction of fire extinguishing agents also does not occur. The photoelectric sensor is used, so that the fire such as electric arc and the like in the switch cabinet can be rapidly and correctly detected.

The invention discloses a qualitative analysis method for improving an identification result on the basis of the near-infrared mode. The qualitative analysis method comprises the steps of (1) acquiring near-infrared spectral data of a sample and determining a modeling set and testing sets; (2) carrying out pretreatment, partial-least-square feature extraction and orthogonal-linear-identification feature extraction on the modeling set and the testing sets in sequence; (3) calculating a spectral transformation matrix between the modeling set and the testing sets by adopting a direct model transferring method, and correcting the remaining testing sets; (4) establishing a quantitative analysis model; and (5) carrying out quantitative identification on the remaining testing sets by utilizing the established quantitative analysis model. The qualitative analysis method disclosed by the invention is established on the basis of near-infrared quantitative analysis, and the orthogonal-linear-identification method which is used in multi-classification and two-classification problems is used in the feature extraction step; in addition, the testing sets can be corrected by the direct model transferring method, so that the model applicability caused by long-time spectral shift of the same instrument can be realized and the result of quantitative identification is improved.

The invention discloses an auxiliary driving device based on an image sensor and a working method thereof, belonging to the field of automobile active safety. The device consists of the image sensor (1), a fan (2), a power supply (3), a liquid crystal drive board (4), a liquid crystal screen (5), a touch screen (6), a touch screen drive board (7), an embedded processing system (8) and an extending device (9); and the auxiliary driving system directly adopts the image sensor as an information sensing part, lane line and vehicle obstacle information is extracted by an image processing algorithmof the embedded system, thus achieving the function of auxiliary driving. The system has compact structure, light weight, low energy consumption, easy operation, good mobility, good detection effect,good timeliness and high performance price ratio, and is applicable to the fields of vehicle auxiliary driving and intelligent vehicle vision navigation.

The invention discloses a construction method for reinforcing and repairing an integral wall of ancient architecture. The construction method comprises the steps of site survey and work preparation, wall foundation reinforcement, wall surface treatment, wall reinforcement and wall maintenance. The construction method is simple and easy to implement, scientific and convenient, and has the advantages of fast construction progress, low construction cost, high working efficiency and wide application range. According to the principle of 'repairing the old as the old', the cultural relic value of ancient architectural elements is kept, only damaged parts are repaired and reinforced, and the whole wall does not need to be replaced. The ancient architecture wall is priceless in cultural relic value. By using the method, original parts can be kept when the ancient architecture wall is damaged and loses bearing capacity, and a bearing function is recovered; the method conforms to the principle of 'repairing the old as the old', and is of great significance to the protection of the national cultural relics.

The invention discloses a method for preparing ultra-low molecular weight hyaluronic acid oligosaccharides and a salt thereof through combination of solid-liquid biphasic enzymolysis and ultrafiltration. The method comprises the following steps: degrading hyaluronic acid and a salt thereof by utilizing hyaluronidase produced by bacilli; preparing high-concentration hyaluronic acid enzymatic hydrolysate by adopting the method of combining a solid-liquid biphasic enzymolysis system and an ultrafiltration system, and then performing inactivating, activated carbon adsorption and impurity removal,filtering and spray-drying to obtain the ultra-low molecular weight hyaluronic acid oligosaccharides and the salt thereof with the molecular weight of less than or equal to 3 kDa. The product preparedby the method is high in stability, ultra-low in molecular weight, good in inflammation resistance and percutaneous absorptivity, high in purity, strong in oxidation resistance, does not have cytotoxicity, has the advantages of repairing skin cell damage and the like, and can be widely applied to the fields of cosmetics, food and medicines. According to the method, the process flow is easy to operate; conditions are mild; various alcohols are not used; the energy consumption is relatively low; the method does not have damage to a product structure, does not have environmental pollution, and is suitable for large-scale industrial production.

The invention discloses a purple sweet potato wine and a preparation method thereof. The purple potato wine with a high anthocyanin content is prepared by preparing purple sweet potatoes into cooked powder, mixing the cooked powder with sesame powder or nut powder, subjecting the powder mixture to enzymolysis by enzymes, liquefying, saccharifying, adding fresh juice, and fermenting with monascus and screened yeast with a plurality of kinds of tolerance. The purple sweet potato wine is a fermented wine prepared by fermentation with a fruit wine process, and maintains original nutrition components of the purple sweet potatoes. The wine is noble in color and luster, mellow, excellent in quality, and rich in the bioactivator anthocyanin and selenium, and is an ideal healthcare drinking.