361results about How to "Simple technical means" patented technology

The invention discloses a smart home voice control system combined with a video channel and a control method thereof. The system comprises a gesture detection module, a human face detection module, a recognition system module, a command judgment module and a command display and confirmation module which are sequentially connected. The recognition system module comprises a lip language part and a voice part, wherein the lip language part comprises a human face tracking and positioning module, a lip language video input module and a lip language recognition module which are sequentially connected; and the voice part comprises a voice input module and a voice recognition module which are sequentially connected. By detecting control gestures and recognizing human faces and lip language information to supplement the recognized voice information, the accuracy of control commands is improved and the feasibility of using voices to control a smart home is increased. The smart home voice control system combined with the video channel has very strong interference resistance, can be widely used for various complex environment modes and is particularly suitable for the situation of high noise because of a great number of people in home environments.

In the proposed condensation product based on amino-s-triazines with at least two amino groups, formaldehyde and sulphite, the molar ratio of amino-s-triazine, formaldehyde and sulphite is 1:2.5-6.0:1.51-2.0 and the formiate content is less than 0.3 wt %. The condensation product is obtained by a) heating amino-s-triazine, formaldehyde and a sulphite in the molar ratio 1:2.5-6.0:1.51-2.0 in an aqueous solution at a temperature of 60-90° C. and a pH level of between 9.0 and 13.0 until the sulphite can no longer be detected; b) continuing the condensation at a pH level of between 3.0 and 6.5 and a temperature of 60-80° C. until the condensation product has a viscosity of 5-50 mm/s at 80° C.; and c) adjusting the pH level of the condensation product to 7.5-12.0 or carrying out thermal secondary treatment at a pH level of >10.0 and a temperature of 60-100° C. The product can be used as an additive for inorganic binders such as cement.

The invention discloses a power battery composite heat management system and a method thereof. The power battery composite heat management system comprises a water tank filled with a circulating fluid, a circulating pump, a sealing cover plate of the water tank, and a battery pack array which is fixedly mounted above the sealing cover plate and is composed of a plurality of battery cells, wherein a temperature equalizing plate and a heat pipe are adhered onto the surface of each battery cell respectively, and cooing sections of the heat pipes pass through the sealing cover plate to be arranged in the circulating fluid in the water tank; a circulating fluid inlet is formed in one side end of the water tank, a circulating fluid outlet is formed in the other side end of the water tank, and a circulating fluid turbulent flow structure is arranged inside the water tank, so that the circulating fluid flows into the circulating fluid outlet from the circulating fluid inlet of the water tank in a curve flowing manner. The system and the method thereof can solve the technical problems such as heat dissipation, battery pack temperature difference reduction, battery preheating and heat cyclic utilization under different working conditions of batteries; and meanwhile, the system is compact and simple in structure and convenient in installation and maintenance, accords with the development tendency of battery heat management systems and electric automobiles, and has good application prospects.

The invention discloses a double-rotation SCR denitration method and an apparatus thereof. According to the invention, a first eddy flow catalytic reaction chamber and a second eddy flow catalytic reaction chamber are arranged along a denitrating tower body; a flue gas introduction pipeline is arranged on a sidewall of the denitrating tower body; several eddy flow atomizing nozzles are respectively arranged on inner periphery of the flue gas introduction pipeline and the inner periphery at top of the first eddy flow catalytic reaction chamber; when flue gas is introduced into the flue gas introduction pipeline, the flue gas and ammonia gas injected by the eddy flow atomizing nozzle are mixed, and a mixture enables spiral sinking along circumference of the first eddy flow catalytic reaction chamber from up to down in a tangent circle mode, under effect of a cyclone, and then the mixture enable spiral rise along circumference of the second eddy flow catalytic reaction chamber from down to up in the tangent circle mode. Under prerequisite that high efficiency denitration is ensured, catalyst amount is less, operation of technical means is simple and easy, compared with the prior art, a denitrating tower structure is simple, cost of the apparatus is low, denitration efficiency is high, energy consumption is low, escapement ratio of ammonia is reduced, denitration cost is greatly reduced, and economic benefit is obviously increased.

The invention relates to an automatic charging equipment for an electric vehicle. The ground system includes a three freedom linkage delivery device and a charging plug. The X axis delivery unit comprises an X axis pulley and a motor for controlling the motion of the X axis pulley. The Y axis delivery unit includes a Y axis sliding piece and a motor for controlling the motion of the Y axis sliding piece. The Z axis delivery unit includes a charging plug hoist and a motor for controlling the motion of the charging plug hoist and mounted on the Y axis sliding piece. The Y axis delivery unit is installed on the X axis pulley. A charging plug is mounted on the charging plug hoist. The charging plug is provided with an infrared positioning collection tube and switches in a power box through a contactor. The vehicular system comprises a charging socket and an infrared positioning transmission tube. The charging socket is located on the bottom of the electric vehicle and provided with the infrared positioning transmission tube. The charging socket switches in an accumulator cell via electrical wires. The equipment is utilized in the areas of district, markets and the like and is a convenient and rapid charging mode.

The invention discloses a vapor chamber having support posts with an inner-sintering structure. The vapor chamber is characterized in that: upper cover plate sintering capillary wicks and lower cover plate sintering capillary wicks are arranged in a cavity between an upper cover plate and a lower cover plate, a plurality of support posts and a plurality of stress absorption rings having a sinking structure are distributed at the inner bottom of the lower cover plate, the upper cover plate sintering capillary wicks and the lower cover plate sintering capillary wicks are provided with a plurality of mounting holes through which the support posts penetrate; and a plurality of bosses which are naturally formed during sintering, and correspondingly matched with sinking positions of the stress absorption rings are distributed on the lower surface of the lower cover plate sintering capillary wicks. The vapor chamber has the advantages that: the stress absorption rings of the vapor chamber can effectively absorb deformation; the regional support post distribution eliminates the influence of the support posts on the enhanced boiling structure of the lower cover plate; capillary porosity wicks in the support posts shorten the refluxing path of liquid working medium in condensing section, separate raising vapor generated by enhanced boiling and reflux falling liquid working medium in the vapor chamber, avoid a shearing effect generated by the contact between a vapor interface and a liquid working medium interface and improve heat-transfer capability.

The invention discloses a device and method for stabilizing air pressure in a sealed molding chamber for 3D printing of metal. The device mainly comprises an oxygen content detecting device for detecting the content of oxygen in the molding chamber, a vacuumizing device for the molding chamber and a pressure sensing device for detecting air pressure in the molding chamber; and the oxygen content detecting device, the vacuumizing device and the pressure sensing device are controlled by the control device, and a way of simultaneously introducing inert gases into the molding chamber and vacuumizing is adopted, so that the content of oxygen in the molding chamber is kept to be reduced, and the air pressure is kept stable. Therefore, the stability and quality of an equipment molding process can be greatly improved, and the safety and reliability of a processing course can be ensured. The device and technical means of the method are simple, convenient and easy; the molding chamber works at positive pressure, so that oxygen in the atmosphere can be kept difficult to enter the sealed molding chamber; in addition, dust cannot be easily raised in the 3D printing process of the metal.

The invention discloses a centrifugal supplying and vibrating compaction device and method for powder for 3D printing. The device comprises a centrifugal powder spreading device arranged in a molding chamber, a powder supplying mechanism for conveying the powder to the centrifugal powder spreading device and a liftable three-dimensional vibrating molding platform arranged below a powder spreading workbench; the whole centrifugal powder spreading device adopts a cylindrical structural which is rotatable and capable of moving in the plane above a workpiece molding area of the three-dimensional vibrating molding platform; openings in the upper end and the lower end of the centrifugal powder spreading device are gradually expanded, the opening in the upper end is a powder receiving port, the opening in the lower end is a powder scattering port, a screen is mounted in the powder scattering port, and the centrifugal powder spreading device is used for spreading received powder in the workpiece molding area of the three-dimensional vibrating molding platform. With the device and the method, the powder spreading process can be uniform and consistent, spread powder particles are more compact, and the density and the surface roughness of molded pieces are improved.

The invention discloses a liquid-coated gas desulfurizing/atomizing nozzle which comprises an internal tapered slurry nozzle and an internal tapered gas nozzle, wherein the gas nozzle is arranged in the slurry nozzle, a gap is formed between the outer wall of the gas nozzle and the inner wall of the slurry nozzle, the outer wall of the slurry nozzle is provided with a slurry inlet pipe, and the internal circumferential surface of the slurry nozzle is a thread surface. Pressure gas subjected to pressurization is fed into the gas nozzle with an internal tapered end, further compressed, jetted out from the gas nozzle, and then converged with slurry in a tapered jet chamber of the slurry nozzle so as to form 'liquid-coated gas'; and under the action of high speed and pressure difference, the 'liquid-coated gas' is broken, and liquid drops are separated and broken and finally jetted out by the slurry nozzle, so that the slurry is efficiently atomized, thereby achieving an optimal flue gas desulfurization effect. The slurry inlet pipe is communicated with the gas nozzle in an obliquely-tangential direction, and the installation angle is consistent with the spiral angle of a thread structure, thereby further facilitating the formation of a natural spiral rotational flow when the slurry is fed into a slurry cavity, and facilitating the formation of the 'liquid-coated gas'.

A device for feeding combustion air to an engine disposed in an interior of an aircraft is comprised of an air inlet duct extending between an exterior surface of the aircraft and the engine, wherein the air inlet duct extends from air inlets disposed in a first region of the exterior surface; at least one further air inlet duct extending between a second region of the exterior surface and the engine, so as to provide a two-way airstream supply; and a control device configured to switch the air supply to the engine to the at least one further air inlet duct when a blockage occurs in the air inlets.

The invention discloses a shaft pivoted hub bearing unit monitoring system for axial pivoting force and displacement and a method. The system comprises a pressure sensor, a transducer I, a displacement sensor, a transducer II, an A/D (Analog to Digital) conversion module, an industrial computer and a data processing module, wherein the pressure sensor and the transducer I are connected in sequence; the displacement sensor and the transducer II are connected in sequence; the transducer I and the transducer II are connected with the A/D conversion module respectively; and the A/D conversion module, the industrial computer and the data processing module are connected in sequence. By adopting the system, pivoting force-displacement data measured in each pivoting process can be recorded, the qualification of a shaft pivoting process can be judged automatically according to a measured pivoting force-displacement curve, possible causes leading to defective goods can be given automatically, and data can be counted and analyzed or called automatically. The system has an easy, convenient and practical technical means and positive and beneficial technical effects.

The invention discloses a preparation method for forming a ceramic dental crown/bridge through digital plane projection. The preparation method comprises the following steps: obtaining three-dimensional data of a dental crown or a dental bridge, scaling up and then discretely stratifying the three-dimensional data, projecting a digital ultraviolet source in ceramic slurry in a dental crown or dental bridge discretely stratified two-dimensional plane form and enabling the ceramic slurry to come into contact with photosensitive materials of ultraviolet under the action of ultraviolet plane projecting beams to be solidified, so that the liquid ceramic mixed slurry in the region is solidified; enabling the ceramic slurry outside the ultraviolet plane projection region to continuously exist in the form of liquid and automatically aligning and connecting the solidifying region on the current stratum with the solidifying region on the next stratum until all the stratified data are completed; after all the three-dimensional discrete surface data are projected, taking out a forming substrate together with a solidified sample on the forming substrate and finally obtaining the ceramic dental crown or dental bridge through the processes of high temperature sintering, and the like. The preparation method has the advantage and effect that the defect that free forming is difficult to achieve as the structure complexity is high when ceramic dental crowns or dental bridges are prepared by traditional cutting processes is avoided.

The invention discloses a preparation method of a short carbon fiber based electromagnetic shielding composite material. The preparation method comprises steps as follows: (1), short ES fibers and short carbon fibers in a certain proportion are put in a dispersion liquid sequentially according to required fibrofelt surface density and are dispersed and mixed, and a mixture is stirred by a stirrer and then left to stand; (2), a dispersed solution is poured into a paper machine and subjected to papermaking by a copper wire mesh on the paper machine, and then a short carbon fiber shielding felt layer obtained through papermaking is dried; (3), the dried short carbon fiber shielding felt layer is clamped between two insulating resin layers and subjected to hot pressing in a plate vulcanizing machine, and the short carbon fiber based electromagnetic shielding composite material is obtained. The invention further discloses the short carbon fiber based electromagnetic shielding composite material. The short carbon fiber based electromagnetic shielding composite material has the characteristics of adjustable shielding performance, ultrathin property, light weight and the like and has excellent anti-oxidation and anti-corrosion properties, the preparation method is simple and easy, the cost is low, the application is wide, and large-scale production is facilitated.

The invention discloses an imaging apparatus and method for detecting object surface micro deformation through machine vision. The apparatus comprises a display, a camera and a computer. The display is used for modulating grating stripe light generating a sine phase shift; the camera and the display are arranged above the surface of a detected object to enable the grating stripe light of the display to be irradiated on the whole upper surface of the detected object and form a stripe image on the whole upper surface of the detected object, and the camera is used for acquiring the stripe image reflected by the surface of the detected object. When the surface of the detected object has such micro defects as projections or recesses and the like, light reflectivity is changed and deflected as a result, grating stripes are locally distorted and deformed, and the distortion deformation portion is just the micro deformation of the surface of the detected object. The imaging apparatus and method provided by the invention solve the problem of incapability of imaging due to too small micro deformation defect on the surface of an object and the same color with a target and enable defect information of the object surface micro deformation to be represented and identified.

The invention discloses a urethra prosthesis reconstructing method based on 3D printing forming. The method comprises the steps that adipose-derived stem cells are differentiated into epithelioid cells and smooth muscle-like cells through cell inducing factors and then converted into cell liquid drops, and the cell liquid drops are prepared by mixing the cells with culture liquid hydrogel and prepared into biological ink capable of being used by a 3D printer; hydrogel prepared by mixing collagen with alginate is selected as stent ink of a stent material; the cells or cell clusters, the proportion of the cells to the gel and the jetting positions and strength of nozzles are controlled by a computer, two spray heads are controlled by an electronically-controlled lifting platform to go up and down, and the urethra section is alternately printed by the two spray heads of the 3D printer layer by layer. According to the method, the adipose-derived stem cells are cultured in vitro, induced to be differentiated into the urothelial cells and the smooth muscle cells and then converted into the cell liquid drops, the urethra is reconstructed in vitro by combining 3D printing, then the reconstructed urethra is transplanted into the body of a patient, and therefore the urethra reconstruction problem is solved.

The invention discloses a friction-wear testing machine capable of realizing variable gravity orientation and a testing method. A vacuum box is fixedly mounted on a rotating shaft, a support frame is arranged in the vacuum box, and a lever mechanism and a rotating mechanism are mounted on the support frame side by side; an upper test sample and a lower test sample are placed between the lever mechanism and the rotating mechanism from top to bottom; the lever mechanism provides downward press force for the upper test sample during testing, and the rotating mechanism provides rotating torque for the lower test sample during testing; when a driving mechanism drives the rotating shaft to rotate, the vacuum box, the lever mechanism and the rotating mechanism rotate synchronously along with the rotating shaft. During testing, the friction coefficients between test samples are obtained by the aid of the lever mechanism as well as pressure and friction force sensors matched with the lever mechanism. During testing, friction tests of the samples in high-temperature and/or low-temperature alternating complex environments can be simulated by heating and cooling the test samples. The friction-wear testing machine can obtain friction coefficients under different gravity effects and realize variable gravity orientation.

The invention discloses a full automatic heat pipe degassing and sealing device. The full automatic heat pipe degassing and sealing device comprises a feeding mechanism, a conveying mechanism and a mould pressing mechanism which are connected with a control system; the feeding mechanism comprises an aggregate bin and a feeding arm correspondingly arranged at the lower end of the aggregate bin; the conveying mechanism comprise a rotary arm, a rotary air cylinder and an air paw with a heating bar, wherein the rotary air cylinder is arranged at the lower end of the rotary arm, the lower end of the rotary arm is arranged on one side of the feeding arm, and the air paw with the heating bar is arranged in the middle of the rotary arm; the mould pressing mechanism comprises a clamping air paw, a thermoelectric couple, a shearing knife, a shearing air cylinder, a flattening air cylinder and a flattening die, wherein the clamping air paw is arranged at the upper end of the rotary arm, the thermoelectric couple, the shearing air cylinder and the flattening air cylinder are arranged above the clamping air paw in sequence, and the shearing knife is arranged at the end of the piston rod of the shearing air cylinder. The full automatic heat pipe degassing and sealing device has a simple structure and high degree of automation, improves the degree of automation of the heat pipe production process, ensures the heat transfer property of a heat pipe, and greatly improves the conventional production efficiency of the heat pipe.

The invention discloses a method for manufacturing a thin film transistor based on an anodic oxidation insulating layer, comprising the steps of manufacturing a glass substrate, a grid electrode, a single oxidation insulating layer, a channel layer, a source electrode and a drain electrode. The grid electrode is arranged on the glass substrate, the single oxidation insulating layer covers the grid electrode, the channel layer is arranged on the insulating layer, and the source electrode and the drain electrode cover two ends of the channel layer respectively and are spaced mutually. The single oxidation insulating layer is manufactured by an anodic oxidation method, and a zinc-oxide-doped semiconductor is used as the material of the channel layer. The thin film transistor has the advantages of low manufacturing cost and temperature, lower threshold voltage, higher carrier mobility, high switching ratio and the like.