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58results about How to "Reduce ineffective loss" patented technology

Vehicle multi-objective coordinated self-adapting cruise control method

InactiveCN101417655AEnhance the feeling of following the carGood following experienceLoop controlDriver/operator
The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I / O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performance indicators of MTC ACC; 3. the I / O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.
Owner:TSINGHUA UNIV

Intercropping furrow irrigation method

The invention discloses an intercropping furrow irrigation method which comprises the following steps: ridging and making channels in farmland and arranging at least two channels and three furrows, wherein each furrow is trapezoid, the bottom width of each channels is 60cm, the bottom width of each furrow is 60cm-105cm, the height of each furrow is 15cm-25cm, the included angle of each furrow side and each channel bottom is 30 degrees to 45 degrees; arranging the line spacing as 13cm-20cm if wheat is grown on the furrows, and arranging the line spacing as 20cm-30cm if soybean is grown on the furrow; growing two lines of corn in the channels, wherein the line spacing is 40cm-50cm, and the row spacing is 25cm-45cm; and irrigating farmland irrigation water in the channels when the crops are in the critical growth period. Compared with ground irrigation, by means of the intercropping furrow irrigation method, water can be saved by 30%-50%, yield can be increased by 10%-40%, the water use efficiency is obviously improved, and not only the economic benefits are significantly obtained, but also the resources can be saved. Therefore, the intercropping furrow irrigation method plays a significant role in stable and sustainable development of the agricultural ecosystem.
Owner:NORTHWEST A & F UNIV

Detection device of dissolved gases in transformer oil based on infrared spectrum absorption

ActiveCN104914066ADoes not consume dissolvedReduce volumeMaterial analysis by optical meansFiberInfrared
The invention belongs to the technical field of electric-power equipment detection, and in particular, relates to a detection device of dissolved gases in transformer oil based on infrared spectrum absorption. The device includes a light source system unit, a sensing arrangement unit and a detection acquisition and analysis unit; the light source system unit is composed of a high-power supercontinuum broadband light source, a light source controller and a photoswitch and is used for realizing output multiplexing control of the light source; the sensing arrangement unit is formed by arranging one sensing path of fiber Bragg grating hydrogen sensor series-connection wavelength division multiplexing and the other one sensing path of hollow photonic crystal optical fiber internal spectrum absorption sensing in a cavity body of an oil-immersed power transformer; the detection acquisition and analysis unit is composed of a wavelength demodulation device, a light intensity detector and a data acquisition and analysis device, the wavelength offset and the spectral absorption intensity of fiber Bragg grating hydrogen sensors are detected, and the data acquisition and analysis device records data and types and contents of corresponding fault gases are obtained by calculation; and on the basis, insulation conditions of the transformer oil are evaluated, positioned, analyzed and forecasted.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1

Electronic device printing device

The invention provides a device which can manufacture an electronic device in a directly-printed mode. An electronic device printing device comprises a controller, an ink box array mechanism and a substrate carrying mechanism, wherein the controller is used for controlling the ink box array mechanism and the substrate carrying mechanism, the ink box array mechanism is used for providing electronic printing ink and conducting electronic printing with the electronic printing ink, and the substrate carrying mechanism is used for carrying a substrate of the electronic device. The requirements of the electronic device printing device for the environment are not high, the complexity of electronic device manufacturing process is obviously reduced, material consumption and material pollution are reduced, and the manufacturing efficiency is improved.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Solid material microwave-sterilizing method and tubular device thereof

The invention discloses a solid material microwave-sterilizing method and a tubular device thereof. Hydrous solid material is heated continuously by multilevel microwaves to generate steam, 0.1017-1.0015Mpa of steam pressure is formed in a tube for closing the steam and the steam pressure is preferentially in 0.2063-0.3653Mpa; a hydraulic or pneumatic push rod is used for continuous pulsed feeding in a controllable way and a spring seal valve is used for continuous discharging in a controllable way; the tubular device for sterilizing the solid material by continuous microwave heating is made to operate under pressure, the solid material is heated with microwaves to more than 120 DEG C of technical sterilizing temperature but less than the pyrolysis or coking temperature of the solid material, thereby continuous sterilizing treatment of the hydrous solid material is realized. The invention is widely applied to the fields of food, brewing, fruit processing, Chinese herbal medicine extraction and organic fertilizer production.
Owner:XINJIANG UNIVERSITY

Method and device for continuously heating and sterilizing solid materials by tubular microwaves

Solid materials with water are continuously heated by multistage microwaves to produce water vapor; the pressure of the water vapor from 0.1017MPa to 1.0015MPa is formed in a tube for closing the water vapor; the preferable pressure of the water vapor is from 0.2063MPa to 0.3653MPa; a threaded rod pump is used for continuous charging in a controllable mode; a rotating valve is used for continuous discharging in a controllable mode; the device for continuously heating and sterilizing solid materials by tubular microwaves is operated with the pressure; and the solid materials are heated by the microwaves to above process sterilizing temperature and under the pyrogenation or coking temperature of the materials to continuously sterilize the solid materials with water. The device is widely applied to the fields of food, brewage, fruit processing, extraction of Chinese herbal medicine and the production of organic fertilizer.
Owner:XINJIANG UNIVERSITY

Full-automatic electronic printing unit and method

The invention relates to the field of direct printing of printed circuit boards and electronic devices, in particular to a full-automatic electronic printing unit and method based on ball driven delivery and transfer printing of electronic ink. The unit comprises a control module, an electronic computer, a slide rail, a slider and a ball printing mechanism; the ball printing mechanism comprises a ball printing head of electronic ink. The electronic ink is continuously delivered and attached to the outer side of a ball until that the electronic ink is spread to the surface of a printing material, through rotation of the ball and up-down knock of the printing head; through a paper-conveying mechanism controlling motion of the printing materials such as paper, preset electronic patterns can be made. The full-automatic electronic printing unit and method has the advantages that the problems that the manufacturing process of the traditional electronic device is complex, consumption of materials and energy sources is high and environmental pollution is high are solved and the increasing needs of the personal electronic design and printing field are met at low cost.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Sodium metabisulfite production method

The present invention relates to the field of production of chemical products, and in particular relates to a sodium metabisulfite production method which is as follows: sulfur is sent by compressed air into a combustion furnace for combustion at 600-800 DEG C, air addition amount is about 2 times of the theoretical amount, gas SO2 concentration is 10%-13%, after cooling dust removal and filtration, sublimed sulfur and other impurities are removed, gas temperature is reduced to about 50 DEG C, the gas is introduced into a tandem reaction barrel, mother liquor and sodium carbonate are added slowly into a pulp storage barrel, a sodium sulfite suspension generated from the sodium carbonate is dissolved, and a sodium metabisulfite crystal can be produced by successively passing through a third, a second and a first reactor for absorption reaction with SO2; sodium metabisulfite prepared by the method is high in purity, utilization rate of raw materials is high, the production process is simple and easy to operate, the mother liquor and energy can be repeatedly recycled, invalid consumption of the production process can be reduced, the purpose of energy conservation and emission reduction can be achieved, production cost is reduced, and economic benefits are improved significantly.
Owner:宣城市楷昂化工有限公司

Mobile terminal control method and system based on earphones, and mobile terminal

The invention relates to the technical field of mobile terminal control and discloses a mobile terminal control method and system based on earphones, and a mobile terminal. The mobile terminal control method based on the earphones comprises the following steps: when the earphones are accessed to the mobile terminal, an earprint acquisition module of the earphones acquiring earprint features of a user; when the earprint acquisition module of the earphones cannot acquire the earprint features of the user, controlling to close a screen and stop playing multimedia; and when the earprint acquisition module of the earphones acquire the earprint features of the user, controlling to open the screen and continuously play the multimedia. According to the invention, whether the earphones are worn by the user is determined according to whether the earprint acquisition module of the earphones can acquire the earprint features of the user, and whether to open or close the screen and continuously play the multimedia is automatically and intelligently controlled, such that the endurance capabilities of the mobile terminal and the earphones are improved, the durability and the service lives of the mobile terminal and the earphones are prolonged, and intelligence and application convenience of the mobile terminal are improved.
Owner:PHICOMM (SHANGHAI) CO LTD

Control method of gateway as well as control method and device of remote control terminal

ActiveCN106789279ASolve the problem of invalid accessReduce ineffective lossNetwork connectionsComputer networkRemote control
An embodiment of the invention provides a control method of a gateway as well as a control method and device of a remote control terminal, relates to the technical field of communication and can solve the problem of invalid access to existing network equipment configured for gateways by the aid of the gateways. The control method of the gateway comprises the steps as follows: detecting the gateway; when the gateway of the remote control terminal and the remote control terminal is determined to be disconnected according to a detection result of the gateway, a deletion command is sent to network equipment configured for the gateway of the remote control terminal, and the deletion command at the remote control terminal is used for indicating the network equipment of the remote control terminal to relieve configuration from the gateway of the remote control terminal; when deletion success information sent by the network equipment configured for the gateway of the remote control terminal is received, the network equipment configured for the gateway of the remote control terminal is deleted. The control method is used for controlling the gateway.
Owner:ENN SCI & TECH DEV

Tobacco sprouting inhibitor and preparation method thereof

The invention discloses tobacco sprouting inhibitor for inhibiting the growth of tobacco sprouts and a preparation method thereof, the tobacco sprouting inhibitor is prepared by industrial chemicals, which are 48 percent of trifluralin missible oil and C8-10 higher fatty alcohol on basis of a certain process; the raw materials have wide sources and low cost, the production process is simple, and the three wastes are not emitted in the production; and the tobacco sprouting inhibitor has good tobacco sprouting inhibition effect and is ideal for controlling the growth of tobacco sprouts.
Owner:河南省农业科学院烟草研究中心

Source bottle applied to atomic layer deposition equipment

The invention discloses a source bottle applied to atomic layer deposition equipment. A plurality of horizontally arranged bubbling tubes with a plurality of pores are communicated with an intake tube which is inserted to the bottom of the bottle body; all the bubbling tubes are hollow tubes with equal length and equal diameter, the tail ends of the hollow tubes are closed, and the hollow tubes are distributed with the bottom end of the intake tube as the center by equal angles; the pitch of the pores has certain corresponding relationship with the pore diameter. According to the invention, the number of bubbles generated by introducing the carrier gas into the liquid source is sufficiently increased and the contact area of the carrier gas and the liquid source is expanded, so that, the carrying efficiency of the carrier gas is greatly improved; meanwhile the source bottle can be allowed to be applied to the liquid source of lower liquid level; moreover, the invalid loss of the liquid source is reduced and the liquid source resource is saved.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD

Sophoridine nano liposome medicament and preparation of the same

The invention relates to a sophoridine nanoliposome drug and the preparation method. The invention provides a sophoridine nanoliposome drug and the material and the content of the material are as follows: 350-500 compound of HSPC for injection and Vitamin E with a mass ration 9.8: 0.2; 20 to 30 compound of cholesterol and Beta-sitosterol with a mass ratio 1 to 3:1; sophoridine 10 to 25; 125 to 200 compound of dextran 40 and mannitol with a mass ratio 1: 7 to 9; 5 to 10reduced glutathione; and poloxamer F-6835-40. The invention also provides the preparation method of the sophoridine nanoliposome. The drug provided in the invention can be used to treat adenocarcinoma, inflammation, gout, progressive disease of the central nervous system, to relieve pain and treat viral myocarditis.
Owner:江苏德伦生物制药有限公司

Multi-rotor unmanned aerial vehicle route planning and aerial photography method suitable for strip-shaped measuring area

ActiveCN111650962AShorten take-off and landing timesReduced redundancy coveragePosition/course control in three dimensionsUncrewed vehicleAerial photography
The invention discloses a multi-rotor unmanned aerial vehicle route planning and aerial photography method suitable for a strip-shaped measuring area, and relates to the technical field of unmanned aerial vehicle autonomous control. In order to solve the problem that in the prior art, when an unmanned aerial vehicle is used for surveying and mapping a strip-shaped area, excessive flight sortie exists, the electric quantity loss of the unmanned aerial vehicle is serious, by adopting the method, the line segment route planning problem of the multi-rotor unmanned aerial vehicle in the irregular strip-shaped measuring area can be solved; the flight sortie can be reduced on the premise of ensuring the availability of flight results; take-off and landing time of an airplane is shortened, invalidloss of an airplane battery is reduced, the working efficiency of field flight personnel is improved, the redundancy coverage rate of the airline is reduced, the effective rate of the airline is increased, and the ortho-image mapping precision is improved in a parallel airline mode, so that the flight cost of a project is reduced, and the economic benefit of the project is improved.
Owner:自然资源部第二地理信息制图院

Vehicle multi-objective coordinated self-adapting cruise control method

The invention relates to a multi-objective coordination-typed self-adaptive cruise control method for a vehicle, comprising the following steps: 1) according to the detail requirements of the multi-objective coordination-typed self-adaptive cruise control for a vehicle, the performance indicators and I / O restriction of MTC ACC are designed, and multi-objective optimization control problem is established; and 2) MTC ACC control law rolling time domain is used for solving the objective optimal control problem, and the optimal open-loop control quantity is used for carrying out feedback and achieving closed-loop control. Based on the steps, the control method comprises the following four parts of contents: 1. the modeling for the longitudinal dynamics of a traction system; 2. the performanceindicators of MTC ACC; 3. the I / O restriction design of MTC ACC; and 4. solution by the MTC ACC control law rolling time domain. By constructing multi-objective optimization problem, the control method not only solves the contradiction among the fuel economy, the track performance and the feeling of the driver, moreover, on the same simulation conditions, compared with the LQ ACC control, the control method simultaneously reduces the fuel consumption and vehicle tracking error of the vehicle, and achieves the multi-objective coordinating control function.
Owner:TSINGHUA UNIV

Method and device for microwave continuous heating sterilization of solid materials

InactiveCN101690825AContinuous in and outAddress technical limitations that cannot be used in microwave environmentsFood preservationRadiationEngineeringAtmospheric pressure
The invention discloses a method and a device thereof for microwave continuous heating sterilization of solid materials, the device adopts a screw plug type continuous feed sealing valve and a screw plug type continuous discharge sealing valve for running with pressure and carrying out operations of feeding and discharging the solid materials and realizes the multi-level microwave continuous heating sterilization of the solid materials, the temperature of the solid materials is increased to be higher than 120 DEG C and lower than the temperature for pyrolysis or coking of the materials by microwave heating, steam with pressure is adopted during the process of the microwave sterilization of the solid materials, the pressure of the steam is 0.1017MPa-1.0015MPa, the working pressure of the microwave heating environment is stabilized, and the continuous heating sterilization treatment of the solid materials containing water can be realized.
Owner:XINJIANG UNIVERSITY

Method, device and equipment for controlling unmanned aerial vehicle and storage medium

The embodiment of the invention discloses a method, device and equipment for controlling an unmanned aerial vehicle and a storage medium. The method comprises the steps of receiving a mode switching instruction sent from a first control terminal and controlling the unmanned aerial vehicle to enter a power-saving flight mode corresponding to the mode switching instruction; determining to-be-closedmodules corresponding to the unmanned aerial vehicle in the power-saving flight mode and generating a corresponding mode closing instruction, wherein the to-be-closed modules are non-essential functional modules of the unmanned aerial vehicle when flying in current flight state; and controlling the to-be-closed modules to be closed through the module closing instruction to make the to-be-closed modules stop working. The functional modules which are irrelevant to keeping normal flight of the unmanned aerial vehicle on the unmanned aerial vehicle can be closed through being switched into the power-saving flight mode, thereby reducing invalid loss of battery power, prolonging the battery life and simultaneously reducing the risk that the unmanned aerial vehicle cannot return or even crashes due to low battery power.
Owner:SHENZHEN AUTEL INTELLIGENT AVIATION TECH CO LTD

Advanced triggering smoking set heating control method

PendingCN112754084ALower maintenance temperatureImprove the suction experienceTobaccoThermodynamicsEngineering
The invention discloses an advanced triggering smoking set heating control method, which comprises the following steps: carrying out self-calibration on a heating non-combustion appliance to obtain a standard temperature measurement resistor end voltage value; in the preheating stage, preheating a heating core to a to-be-heated temperature; in the to-be-heated stage, keeping the temperature of the heating core at the to-be-heated temperature; in the advanced heating stage, in response to an advanced heating signal, heating the heating core to a heating temperature in advance; in the heating stage, in response to a suction signal, keeping the temperature of the heating core at the heating temperature by a threshold preset heating duration; after the heating temperature of the heating core is kept at the threshold preset heating duration, stopping heating, and cooling the heating core to the to-be-heated temperature; and repeating the processes of waiting for heating, advanced heating, heating and cooling until suction is finished. According to the advanced triggering smoking set heating control method, the heating effect of the heating smoking set is ahead of the actual smoking action of the user, the smoking experience of the user is improved, the maintaining temperature of the non-heating stage of the smoking set is greatly reduced, and the invalid loss of energy of the smoking set is reduced.
Owner:CHINA TOBACCO HENAN IND

Novel workpiece clamping device

The invention discloses a novel workpiece clamping device which mainly comprises a spindle, an upper grinding wheel, a fixing ring and a plurality of workpiece clamping wheels, wherein a clamping groove for clamping a workpiece is formed in the middle of each workpiece clamping wheel; the lower grinding wheel is arranged in the fixing ring and is coaxial with the fixing ring; the upper grinding wheel is arranged over the fixing ring and is opposite to the lower grinding wheel; the lower grinding wheel is meshed with the workpiece clamping wheels; the axle centers of the workpiece clamping wheels are uniformly distributed along a circumference; the workpiece clamping wheels are meshed with the lower grinding wheel and the fixing ring at the same time. The novel workpiece clamping device can clamp a plurality of workpieces at the same time, meanwhile can enable the workpieces to be processed to do planetary motion around a grinding head, and is mainly used for workpiece clamping on a parallel surface grinding machine. The novel workpiece clamping device can improve the stress uniformity of a grinding tool, so that the tool is uniformly abraded during workpiece processing, the service life of the tool is prolonged and the use cost is reduced.
Owner:上海森宝机电设备厂(普通合伙)

Cross-surface complex paving unified design method based on cloud computing

The invention discloses a cross-surface complex paving unified design method based on cloud computing, and the method specifically comprises the steps: paving surface selection: a user selects a surface or surface group needing to be designed through a browser or a client, determines the selected surface or surface group in an interactive or non-interactive mode, and confirms the unified paving design of a target surface or surface group; judging a paving surface, namely screening and judging the selected surface or surface group by the system, and determining a paving route, and the step comprises the procedure that if a paving face is judged to be in a single-face paving design, the paving face is degraded to an existing single-face paving scheme design logic in a system, and the systemguides a user to conduct design and finally enters a subsequent use link; if the paving surface is judged to be a multi-surface paving design, entering a cross-surface paving scheme design process; and finally, previewing, rendering, constructing a drawing and calculating a bill of materials. By using the method, cross-surface complex paving scheme design can be relatively efficiently supported, and cross-surface material processing between surfaces can be automatically adapted.
Owner:HANGZHOU QUNHE INFORMATION TECHNOLOGIES CO LTD

Lubricating device capable of automatically dropping liquid

The invention discloses a lubricating device capable of automatically dropping liquid, and relates to the field of lubricating devices. The lubricating device comprises: a tank body, wherein a driving motor is fixedly connected to the middle of the right side wall of the tank body; a stirring mechanism which is rotationally connected to the middle part of the inner cavity of the tank body; a filtering mechanism which is fixedly connected to the middle part of a liquid adding pipe; and an intermittent mechanism which is arranged on the right side of the bottom of the tank body. A telescopic rod is driven by a rotating shaft to rotate, the telescopic rod and a trigger sliding block are made to slide in an abutting mode, so that the trigger sliding block drives a movable plate to slide;, when the movable plate slides, a communicating pipe slides in a second sliding groove along with the movable plate, and finally the communicating pipe is communicated with a liquid dropping opening; and through the sliding effect between the sliding groove and a dropping pipette, the dropping pipette is communicated with the communicating pipe, so that the automatic dropping process is completed, the requirement for labor is greatly reduced, and the economic benefits of enterprises are improved.
Owner:HUANENG JIAXIANG POWER GENERATION CO LTD

Multiple-tube-core electronic direct-writing ballpoint pen

The invention discloses a multiple-tube-core electronic direct-writing ballpoint pen which includes a penholder structure used for loading a multi-tube pen core which is provided with a liquid metal conductive ink, an insulating ink and a semiconductor ink; and pen cores used for loading the liquid metal conductive ink, the insulating ink and the semiconductor ink and enabling the inks to be directly written on a substrate, wherein the liquid metal conductive ink is used for printing or writing a conductor structure, the semiconductor ink is used for printing or writing a semiconductor structure and the insulating ink is used for packaging the conductor structure or the semiconductor structure. In the multiple-tube-core electronic direct-writing ballpoint pen used for a directly writing circuit and an electronic device, because the printable liquid metal conductive ink and the supporting semiconductor ink are introduced, the circuit and the electronic device can be directly manufactured in a writing-like method.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Preparation method and application of rare earth vanadate two-dimensional nanosheet photocatalytic material

The invention belongs to the field of two-dimensional material synthesis, and particularly relates to a preparation method and application of a rare earth vanadate two-dimensional nanosheet photocatalytic material. The preparation method comprises the steps: mixing a proper amount of rare earth nitrate and NH4VO3 in deionized water, carrying out ultrasonic treatment till complete dissolution is achieved, adding an organic template agent polyvinylpyrrolidone under heating and magnetic stirring conditions, adjusting the pH value of the solution to 1-4 by using an inorganic acid, then transferring the mixed solution into a high-pressure kettle, and reacting under a microwave hydrothermal condition; and after naturally cooling to room temperature, centrifugally collecting the obtained precipitate, washing, and drying to obtain the rare earth vanadate two-dimensional nanosheet material. According to the invention, the obtained two-dimensional rare earth vanadate has an ultrathin structure and a large specific surface area, provides abundant reaction sites for catalytic reaction, has a good up-conversion effect, fully absorbs and utilizes near-infrared light, and has an excellent effect of synthesizing ammonia by photocatalytic nitrogen fixation.
Owner:江苏纳欧新材料有限公司

Colorful low-melting-point metal wire for 3D printing and preparation method thereof

ActiveCN109894494AReduced ability to diffuse and migrateRapid consumption distortion heats upAdditive manufacturing apparatusWire rodUltimate tensile strength
The invention relates to a colorful low-melting-point metal wire for 3D printing and a preparation method thereof, and belongs to the field of metal material 3D printing. The main improvement is thatcolorful low-melting-point metal is maintained below 0 DEG C in the machining process of the colorful low-melting-point metal wire. The material is formed by mixing low-melting-point metal, colorful pigment and nanometer electric conducting particles; and then, through molding by a machining method, the metal printing wire with electric conductivity, rich colors and a certain strength is finally prepared. In addition, equipment related to the invention is traditional industrial common equipment, so that the equipment refitting process is reduced, the industrialization possibility is effectively improved, the 3D printing application range is effectively widened, and the industrial value is prominent.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Intracavity frequency doubling enhanced laser

The present invention provides an intracavity frequency doubling enhanced laser. The laser comprises a first reflector, an SHG characteristic crystal, a THG characteristic crystal, a second reflector and a third reflector; the second reflector is configured to reflect the first frequency doubling light and the second frequency doubling light propagated in the THG characteristic crystal, the first frequency doubling light and the second frequency doubling light are reflected on a Brewster angle plane to the interior of the THG characteristic crystal, and the frequency doubling light to be reflected of the THG characteristic crystal is transmitted out; the third reflector is configured to reflect the first frequency doubling light and the second frequency doubling light propagated in the THG characteristic crystal, the first frequency doubling light and the second frequency doubling light are reflected on the Brewster angle plane, and the frequency doubling light to be reflected of the THG characteristic crystal is transmitted out; and the frequency doubling light to be used for refraction and the frequency doubling light to be used for reflection is recycled in the light path reversibility mode to the THG characteristic crystal for sum frequency, the frequency doubling light which fully employs the intracavity frequency doubling of the ultraviolet laser is recycled to reduce the invalid loss of the laser so as to maximize the sum frequency efficiency, and the recycled frequency doubling light can perform multi-time sum frequency so as to increase the power output of the ultraviolet light.
Owner:BEIJING GK LASER TECH

Small electro-adsorption system for drinking groundwater treatment and use method thereof

The invention discloses a small electro-adsorption system for drinking groundwater treatment and a use method thereof, and relates to the field of drinking water treatment. The invention aims to solve the technical problem that the electric adsorption efficiency is influenced due to small contact area between water flow and electrodes of the existing electric adsorption equipment. The system comprises electro-adsorption devices, a raw water tank, a purified water tank, a waste water tank, an electromagnetic valve and a security filter. The electro-adsorption devices comprise an A group of electro-adsorption device and a B group of electro-adsorption device, and each group of electro-adsorption device comprises a plurality of adsorption units. The two groups of electro-adsorption devices of the system are connected in parallel and operate alternately to obtain continuous purified water. According to the system, the contact area of raw water and the electrodes is large, scaling is not prone to occurring, the electro-adsorption efficiency is high, and a good desalting effect is achieved. The system is used for underground water treatment.
Owner:HARBIN INST OF TECH

Device for preparing carbon-doped chemical vapor deposition tungsten coating

The invention relates to the technical field of chemical vapor deposition, in particular to a carbon-doped chemical vapor deposition tungsten coating device which comprises an activation recovery furnace and a deposition furnace which are communicated with each other, and an activation area and a tail gas recovery area on the peripheral side of the activation area are arranged in the activation recovery furnace; one end of the activation area is connected with a first air inlet pipe, and the other end of the activation area is connected with the air inlet end of the deposition furnace through an activation pipeline; one end of the tail gas recovery area is connected with a recovery pipeline and a fourth gas inlet pipe, the other end of the tail gas recovery area is connected with a tail gas treatment mechanism, and the recovery pipeline is connected with the exhaust end of the deposition furnace; a gas mixing device and a deposition platform are arranged in the deposition furnace; the gas mixing device is respectively connected with the activation pipeline, the second gas inlet pipe and the third gas inlet pipe; heating devices are arranged in the activation recovery furnace and the deposition furnace, under the action of the heating devices, gas activation or tail gas recovery is performed in the activation recovery furnace, and coating deposition is performed in the deposition furnace, so that the reaction cost and loss are reduced.
Owner:XIAMEN TUNGSTEN
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