126results about How to "Scientific and reasonable layout" patented technology

The invention discloses turbine-based combined cycle engine super-combustion chamber. Key parts of the super-combustion chamber comprise a shunt ring, a rear area-variable deflation valve, a flow guide tongue piece, a square lobe mixer, a first area fuel ejector, a center cone, a second area fuel injection ring, an evaporation tube flame stabilizer, a heat-isolating screen, a super-combustion chamber cylinder, an outer extending groove-width-variable radial flame stabilizer and an inner extending radial flame stabilizer. An internal flow field of the super-combustion chamber is reasonably distributed, the phenomenon of backflow from a punching duct to a turbofan duct can not occur, flow separation can not occur in the square lobe mixer, and the evaporation tube flame stabilizer can achieve soft ignition of the super-combustion chamber. The whole super-combustion chamber is high in mixing efficiency, little in cold flow resistance, high in combustion efficiency, reasonable in temperature distribution, and capable of meeting use requirements in a whole flight envelope of the super-combustion chamber in each work state and the requirement for boost of an turbofan ramjet.

The invention provides a method for displaying a virtual keyboard, the virtual keyboard and a touch screen terminal. The method comprises the following steps of: receiving sliding information of a user for the virtual keyboard, wherein the virtual keyboard comprises a plurality of parts, and a part of the plurality of parts are displayed in a keyboard display area of a screen; and moving and / or loading the corresponding part in the virtual keyboard according to the sliding information, and displaying the changed part in the keyboard display area of the screen. The application of a panoramic keyboard is provided, unlimited sliding of the user can be accepted, keyboards with different input functions are prevented from being frequently opened and closed by the user in the input process, the problem of interruption when the user switches the keyboards can be solved, the using efficiency of various keyboards is improved, and using smoothness and continuity are improved.

The invention relates to a continuous mining technique for a thin coal layer of an opencast coal mine. Aiming at a stratum condition and a reserve situation of the thin coal layer of the opencast coal mine, a plurality of mining areas are arranged; steps of digging, crushing, transferring, conveying and storing are adopted; an opencast coal mine continuous mining machine, an opencast coal mine traveling type feeding crusher, a long-span bridge type reversed loader, a travelling reversed loader, a short-span bridge type reversed loader, a discharging trolley, a working surface belt conveyer and a machine alley externally-used belt conveyer are integrated; and a production mode combining digging, crushing, conveying, discharging and storing is formed. The coal mining technique is advanced; the devices are scientific and rational; equipment are compact and continuously arranged and are safe, stable and reliable; the mining efficiency is high; multi-stage transferring is realized; coals can be smoothly conveyed; and the continuous mining technique for the thin coal layer of the opencast coal mine is very ideal.

The invention discloses novel spring-stepped scene-layered sewage treatment equipment and relates to the technical field of sewage treatment equipment. The sewage treatment equipment is composed of a grid well, an adjusting tank, an anaerobic tank, a water collection tank, a horizontal subsurface flow constructed wetland, surface flow constructed wetlands, an effluent water collection tank and water body purifying plants, wherein the anaerobic tank is arranged at the center of the adjusting tank; the horizontal subsurface flow constructed wetland is arranged on the upper layer of the anaerobic tank; the water collection tank is arranged at the center of the horizontal subsurface flow constructed wetland; several layers of surface flow constructed wetlands are sequentially arranged on the periphery of the horizontal subsurface flow constructed wetland; a layer of horizontal subsurface flow constructed wetland is also arranged on the periphery of the surface flow constructed wetlands; and the horizontal subsurface flow constructed wetland and the surface flow constructed wetlands are filled with constructed wetland padding, and water body purifying plants are planted therein. The novel spring-stepped scene-layered sewage treatment equipment disclosed by the invention has the advantages of novel and reasonable structure design and good using effect, the using cost can be effectively lowered, secondary pollution is avoided, the land occupation is saved, and the equipment is efficient, stable and maintenance-free.

The silica gel plastic bottle regenerating pre-treatment machine for pre-treating waste bottle in high efficiency includes a pedestal, a multi-site circulator and a multifunctional device. The multi-site circulator has turntable, grooved wheel mechanism, clamping head and rotation mechanism. The multifunctional device includes a bottle holder with clamping cylinder and lever, a polisher, a bottle head cutter, a residual silica gel pushing out unit, a bottle unloading unit with loosening roller, roller frame, unloading cylinder and push rod board, and a driver.

The invention discloses a soil environment quality monitoring method. The method comprises the following steps: 1) taking a to-be-monitored zone as a scope, uniformly dividing a target land type layer in a geographic information system into a plurality of rectangular grids, and taking central points of the grids, main land types of which are target land types, as initial monitoring point positions; 2) according to a present land use situation, performing position adjustments on the initial monitoring point positions until the land types of the initial monitoring point positions acquired in the step 1) are the target land types; 3) for the same grid, replacing the initial monitoring point positions with recent historic monitoring point positions as monitoring point positions; according to the land types, performing adjustments on the monitoring point positions until the monitoring point positions cover soil types of main target land types; and taking the monitoring point position after the adjustments as monitoring points of target lands. The method disclosed in the invention uses the GIS special analysis technology, improves soil environment quality monitoring accuracy and representativeness, optimizes the number of cultivated soil environment quality monitoring distributed point, and is easy to operate and implement.

The invention discloses an automobile spare tire installing structure, which comprises a spare tire pool arranged on a back floor, wherein the spare tire pool comprises a spare tire pool front part and a spare tire pool back part; the spare tire pool front part is of a circular arc structure; the spare tire pool back part extends out in the tangential direction of the circular arc of the spare tire pool front part; the cross section of the spare tire pool back part is in a U shape; an installing support frame used for installing an automobile spare tire is arranged in a connecting position of the spare tire pool front part and the spare tire pool back part; structure reinforcing structures are arranged on the periphery of the installing support frame and at the spare tire pool front part and the spare tire pool back part. The automobile spare tire installing structure has the advantages that the carrying capability is high; the structure is simple; the manufacturing process is simple; good modal stiffness performance is realized; the light-weight requirements can be met.

The invention discloses an inflatable intelligent mattress. The inflatable intelligent mattress is formed by a mattress module, a control panel, a pipe assembly, a temperature sensor module, an air pressure detection module, an electromagnetic valve module and a failure warning module. The mattress module mainly achieves left-right turning over, backing up, leg bending and fluctuation functions; the control panel adopts a true-color touch screen, comprises function buttons and image display, and controls movement of the intelligent turn-over mattress; the pipe assembly is mainly used for air inflation and air discharging of all air sacs in the mattress module; the temperature sensor module detects the temperature under the body of a patient, the turn-over state is controlled through feedback signals, and bedsores are prevented from being generated; the air pressure detection module detects internal gas pressure of all the air sacs in the mattress module; the electromagnetic valve module controls on-off states of all air ways in the pipe assembly. The inflatable intelligent mattress is scientific and reasonable in layout, low in energy consumption, low in cost, convenient and flexible in achievement and high in efficiency and is capable of being applied and popularized.

The invention discloses a coal mine underground multi-stage energy-saving roadway cleaning device. The cleaning device is characterized in that a water supply pipe is arranged in the longitudinal direction of a roadway, penetrates through the whole roadway and is hung on anchor rods on a roadway roof through hooks; an adjustable high-pressure water pump supplies water to the water pipe; rotary sprayer assemblies are connected with the water supply pipe in parallel through needle valves at equal intervals; each rotary sprayer assembly comprises a center nozzle and four peripheral nozzles, wherein the four peripheral nozzles each comprise a wide-angle sector-shaped atomizing nozzle and a narrow-angle sector-shaped atomizing nozzle; the number of flushing stages of the roadway is determined according to the length of the roadway through the technical means such as control switches of pneumatic actuators arranged at the height positions capable of being reached by the hands of operators, and the whole roadway is cleaned and flushed in a graded mode. Compared with the prior art, the cleaning device has the advantages of being simple in structure, convenient to control and adjust, good in dust removal and dust fall effect, low in operating cost, capable of saving energy and water, safe, stable, reliable and the like.

The invention discloses a proper water supply position intelligent recognition technology based on multi-source hydrogeology survey information. The intelligent recognition technology establishes an analytic hierarchy model (quantitative analysis model) by taking hydro-geological drilling, a plane hydro-geological map, a hydro-geological profile map, underground water dynamic monitoring data and the like as data sources, and taking a geography, a water bearing ground, a reservoir structure, an underground water level, an underground water flow direction, an underground water quantity, water quality and the like as recognition factors; the recognition factor information about the water supply survey hydrogeology on various hydrogeology survey spatial maps is automatically extracted by integrating the geographic information system (GIS) of the analytic hierarchy model, using a computer technology and the spatial analysis function of the GIS and combining expert knowledge, and a districtsuitable for water supply is rapidly evaluated and recognized according to a weight and a water-rich degree evaluation index endowed by each recognition factor so as to avoid the disadvantage of randomness of qualitative and empirical analysis site selection.

The invention relates to an intelligent goods sorting system and goods sorting method, and aims to provide a scientific and efficient intelligent goods sorting system and goods sorting method, so as to improve the goods sorting efficiency. According to the technical scheme, the intelligent goods sorting system is characterized by comprising a main conveying belt formed by connecting multiple conveying belts, and multiple circulation boxes capable of being circulated on the conveying belt; code regions are arranged at the peripheries of box bodies of the circulation boxes; and a goods sorting region, a packaging recheck region and a goods delivery region are distributed in sequence in a conveying direction of the main conveying belt. The intelligent goods sorting system and method is suitable for the technical field of warehouse goods sorting.

The invention belongs to the technical field of resident and warehousing facilities, and relates to a container type multifunctional storage house. Supporting tubes are welded to the inner sides or the outer sides of a first container and a second container which correspond to each other in parallel. Core tubes with drill holes are welded in one ends of longitudinal tubes, and drill holes are punched in the other ends of the longitudinal tubes. The end with the core tube of one longitudinal tube is matched to be in butt joint with the end with the drill hole of another longitudinal tube. The two ends of horizontal tubes are respectively provided with a connecting piece in a welding mode, and the pairwise connecting portions of the longitudinal tubes are in butt joint with the horizontal tubes through the connecting pieces. The first container, the second container, the supporting tubes, the horizontal tubes, the longitudinal tubes and the connecting pieces are together matched to form an overall framework of the storage house, steel wire ropes are longitudinally connected to the horizontal tubes, and arc-shaped tubes are connected to the positions below all the longitudinal tubes through reinforcing tubes. Tightening belts with tensioners are arranged on a canopy awning cloth which covers the framework of the storage house in a wrapping mode. The container type multifunctional storage house is ingenious in structural design, reasonable and scientific in layout, convenient and quick to build, good in stability and large in inner containing area.

The invention relates to an intelligent two-way sleeve for monitoring pressure, temperature and moisture on line in real time. The intelligent two-way sleeve comprises a two-way insulated sleeve formed by connecting an upper sleeve and a lower sleeve, wherein the inner cores of the upper sleeve and the lower sleeve are connected in series through a conductive rod, and the lower end of the conductive rod is connected with an inlet-outlet wire, while the upper end of the conductive rod is connected with a main bus or a switch; and an intelligent module for monitoring pressure, temperature and moisture on line in real time is arranged in a cavity between the inner wall of the port of the upper sleeve and the outer wall of the upper end of the conductive rod. The two-way sleeve for monitoring the pressure, the temperature and the moisture of a ring main unit on line in real time has the advantages of simple structure, convenience in mounting and good monitoring effect.

The invention discloses a carbon dioxide (CO2) welding machine automatic grounding device and belongs to the technical field of CO2 shielded welding machine welding. The CO2 welding machine automatic grounding device comprises a base (1),a conductive copper plate (2), a spring (3) and a copper wire row (4), wherein the spring (3) is arranged on the base (1), the conductive copper plate (2) is arranged on the spring (3), the conductive copper plate (2) can move up and down along with stretching out and drawing back of the spring (3), and two ends of the copper wire row (4) are respectively connected with the conductive copper plate (2) and the base (1). According to the CO2 welding machine automatic grounding device, through the arrangement of the CO2 welding machine automatic grounding device, the layout of the connection mode of grounding of a CO2 welding machine is more scientific and reasonable, operation procedures of a welder is simplified, the quality of grounding is guaranteed, the co-ordination among different types of work in a station is greatly improved, working efficiency and product quality are improved, besides, the CO2 welding machine automatic grounding device is simple in structure, convenient to use, low in cost, and strong in practicability.

The invention discloses a packing box, comprising a wood base (1), front and back packing boards (2), left and right packing boards (3) and a top cover packing board (5) which are bound into one bodyby packing belts (6). The packing box has compact structure, high intensity, easy processing, and rapid and convenient installation, and can save material and storage and transportation cost.

The invention discloses a multi-frequency ultrasonic parallel radiation gas-liquid mass-transfer reaction device, which comprises a compressor, a gas buffer tank, a gas flowmeter, a distributing plate, an ultrasonic bubbling reaction tower, a double-conductivity probe, a liquid-phase inlet, a liquid flowmeter, an air inlet, a thermometer, a drain outlet, a discharge hole, a liquid seal, a bubble characteristic parameter measuring instrument, an ultrasonic transducer and connecting pipes. When the device disclosed by the invention is used, a liquid phase enters the ultrasonic bubbling reactiontower through a liquid-phase inlet at the upper end of the ultrasonic bubbling reaction tower prior to the beginning of a reaction and is discharged from the discharge hole at the lower end of the ultrasonic bubbling reaction tower so as to form a continuous flow; and a gas phase enters the ultrasonic bubbling reaction tower from the bottom of the ultrasonic bubbling reaction tower through the distributing plate to form an overall counterflow with the liquid phase and react the mass-transfer reaction. The device disclosed by the invention has the characteristics of large and adjustable ultrasonic power range, large and evenly-distributed acoustic intensity density, high and visualized energy utilization ratio, capability of being in butted joint with other measuring instruments so as to carry out data real-time acquisition and monitoring treatment and the like.

The invention discloses a mechanical structure of a novel sensor and the novel sensor. The sensor can be used for pose control of an aircraft and generally belongs to a solar sensor. Specifically, thesensor is a novel imaging-type polarization light navigation sensor. The sensor comprises a filtering sheet, a cone mirror and a CMOS sensor. The refractive index of materials of the cone mirror andthe included angle between the cone face and the bottom are obtained through strict design and calculation. The CMOS sensor with quite high resolution is used for receiving polarization light penetrating through the cone mirror. The sensor is simple in structure, high in timeliness, and high in measurement precision and has favorable application prospects in polarized light azimuth angle measurement and polarized light navigation.

The invention discloses a landfilling system for mining area renovation and a landfilling process of the system, and belongs to the technical field of coal mine pit backfilling. The landfilling systemcomprises an advancing system, a vibration feeding system, a crushing and conveying system, a screening and distributing system, a grinding system and a tamping system; and the advancing system is arranged on the pit face of a mine pit, the vibration feeding system is arranged in the middle of the top of the advancing system, the crushing and conveying system is arranged at the discharging end ofthe vibration feeding system, the screening and distributing system is installed on the lower portion of the discharging end of the crushing and conveying system, the grinding system is arranged between the crushing and conveying system and the screening and distributing system, and the tamping system is arranged at the end, away from the grinding system, of the advancing system. By means of allthe arranged systems, vibration feeding, crushing, screening and distributing, paving and tamping operation can be conducted on backfill materials, the materials can be backfilled into the mine pit more tightly and compactly, and the serious consequence that filling materials in a backfill area are too loose, and consequently land subsidence is caused is prevented.

The invention discloses a shared bicycle parking area layout method based on a clustering algorithm. The method comprises the following steps: S1, acquiring historical position data of shared bicycles; S2, performing coordinate conversion on the position data of the shared bicycle; S3, initializing a DBSCAN algorithm clustering parameter and carrying out preliminary clustering; S4, adopting a k-means clustering algorithm to divide overlarge classes; S5, performing evaluation index calculation and clustering parameter traversal condition inspection; S6, proposing an optimal shared bicycle parking area position and capacity; and S7, judging the stability of the layout effect of the parking area. According to the method, the situation of unreasonable parking area planning of the shared bicycles can be effectively relieved, the parking areas are arranged in a more targeted mode, the standardized management level of the shared bicycles is improved to a certain extent, parking area planningis conducted by considering the factors such as position information of different time periods and the service radius of the shared bicycle parking areas. Parking requirements and walking distances ofusers in all time periods can be planned as a whole.

The invention relates to a device for feeding chain rivets into a tray automatically and belongs to the technical field of mechanical engineering. The device comprises a machine frame, a tray material bin mechanism, a tray transferring mechanism, a chain rivet feeding mechanism and a tray slideway mechanism. The machine frame is a platform for installing and positioning all parts and components. By means of the combination of the tray material bin mechanism and the tray transferring mechanism, automatic conveying and movement of trays are achieved. By means of the chain rivet feeding mechanism, the automatic transferring, overturning, clamping and feeding work of the chain rivets are achieved. By means of the tray slideway mechanism, the trays can slide into other working stations automatically. The device is scientific and reasonable in arrangement, reliable in work and high in efficiency, and application and popularization are facilitated.

Provided are a one-machine double-wire self-heat-preservation wallboard production system and an operating method. The one-machine double-wire self-heat-preservation wallboard production system is composed of a light particle processing system, a material distributing device, a material distributing hopper, a discharging barrel, a delivery pump, a material delivery pipe, a mold receiving tunnel, a mold receiving track, a shuttle bus, an adapter track, a mold box, a standing track, a mold delivery tunnel, a mold delivery track, a mold removal and closing-up track, a transition area, a trolley support, a trolley, a movable pushing head, a hydraulic cylinder and a booster cylinder. The one-machine double-wire self-heat-preservation wallboard production system adapts to a production device using cement and various lightweight aggregates as raw materials, enables concrete to contain a heat-preservation material, accordingly the concrete having heat-preservation performance is formed, the heat-preservation concrete is formed in the forming process by using the forming mold box, and full-automatic production control is adopted in the self-heat-preservation wallboard production system.

The invention discloses an integrated circuit layout initialization and optimization method and device and a storage medium, and belongs to the field of integrated circuit design. The method comprisesthe following steps: analyzing and placing a plurality of IP modules of an integrated circuit in a blank physical layout area of the integrated circuit by using a data flow analysis tool, and dividing IP position grids with the same area on the blank physical layout area at the periphery of each IP module in the plurality of IP modules, and placing an external function module in the area, exceptthe IP position grids, of the blank physical layout area by utilizing a standard unit arrangement too; and performing simulation adjustment on the positions of at least two of the plurality of IP modules, and performing actual position adjustment on the at least two of the plurality of IP modules according to the change of the time sequence snapshot state space size before and after the simulationadjustment. The application of the method is separated from qualitative analysis, the relative positions of the IP modules are analyzed through a time sequence, and the weight is increased, so that the positions of the IP modules are conveniently exchanged, the layout optimization is realized, and the early-stage layout is more scientific and reasonable.

The invention discloses an extra-thick solid potassic salt mine mining method achieving one-time overall width mining, and belongs to the technical field of mining. The extra-thick solid potassic salt mine mining method achieving one-time overall width mining can solve the problems that in the prior art, mining of an extra-thick solid potassic salt mine is low in efficiency and yield. Room type mining working faces are arranged at the top and the bottom of a solid potassic salt seam correspondingly, the stoping operations of ore in stope rooms are completed by adopting a potassium mining machine, ore pillar support top plates are reserved, and the stope rooms and ore pillars of the top of the seam correspond to the stope rooms and ore pillars of the bottom of the seam in an one-to-one mode; then raise-bore machines are mounted in the stope rooms of the top of the seam, guide bits are utilized to break through to top plates of the bottom stope rooms from bottom plates of the top stope rooms, and inversion bits are mounted in the bottom stope rooms to complete the process of raise-bore machine ore breaking down; and falling ore bodies are transported to a belt through forklifts or harrowing machines in the bottom stope rooms to complete the transporting process of the ore. According to the extra-thick solid potassic salt mine mining method achieving one-time overall width mining, safe and high-efficiency mechanized mining can be achieved.

The invention relates to a landfill liner layer anchoring structure using rice hull ash concrete and belongs to the technical field of environmental protection. A lining layer is arranged on the sideslope of the a landfill, the lining layer specifically comprises a middle anti-seepage film and geotextile on two sides, a rice husk ash concrete anchoring shell is arranged at the top end or the middle platform of the side slope and is fixed in an anchoring groove through a precast concrete pile, the lining layer is folded in the rice hull ash concrete anchoring shell, an upper perforated PVC pipe is arranged at the lower part in the anchoring shell, the rice hull ash concrete filler is poured at the periphery, and the upper part is filled with crushed stones. The anchoring structure adopts partial prefabricated construction, a part of parts can be manufactured in a standardized way, and the anchoring structure has the function of collecting, guiding and draining percolate.

A blood coagulation analyzer providing an online interface relates to the technical field of blood coagulation analyzers. According to the technical scheme, the blood coagulation analyzer comprises areagent bin module, a detection module, a needle movement module, a needle cleaning module, a reaction cup transportation module, a sample inlet, a power supply control module in signal connection with the modules, and a sample transportation module. The blood coagulation analyzer is communicated with an on-line track, so that a sample rack loaded with blood sample tubes can enter the blood coagulation analyzer from the on-line track, returns to the on-line track after being sampled in the blood coagulation analyzer and is sent to the next inspection instrument. The workload of inspection personnel is reduced, and meanwhile, the residence time of a blood sample in the blood coagulation analyzer is shortened, that is to say, the total time for completing all the detection items is shortened. The addition of the sample transportation module also changes the overall layout of the blood coagulation analyzer, and the other modules of the blood coagulation analyzer are redistributed in position according to the sample transportation module, so that the structural layout of the instrument is more scientific and reasonable.

The invention relates to a diamond cutting blade experiment device which is formed by a cutting material lifting support part, a cutting material automatic loading support part, a shears-fork type lifting platform part, a cutting material working table part and a cutting part. After the actions of the device are accomplished, automatic loading, automatic guiding, automatic feeding, automatic pressing and automatic cutting of a cutting material can be accomplished, and diamond cutting blades with different specifications can be use for continuously and automatically cutting different cutting materials (such as bricks, tiles and stone materials) in a fixed-length and depth-keeping way, so that the durability parameter of a saw blade is obtained, and the problems of poor working environment,high labor intensity, poor working environment, high risk and instability of measured data due to large human factor influence occurred when an angle grinder is manually held for cutting the stone materials at present are solved.

Provided in the invention is an earthquake rescue vehicle. A container square cabin is mounted on an automobile chassis; the interior of the container square cabin is divided into a plurality of bins,and each bin is provided with a vertical telescopic suspension fixing frame, a vertical rotary telescopic suspension fixing device, a telescopic sliding fixing tray, a movable turnover inclined push-pull drawer and / or a telescopic climbing and treading working platform. The movable turnover inclined push-pull drawer comprises a drawer, a guide slide rail and a stop mechanism; a groove guide railof a right guide rail specially-shaped plate on the right side of the drawer slides along a right front cylinder rolling supporting adjusting wheel, a groove guide rail with a convex rib of a left guide rail specially-shaped plate on the left side of the drawer slides along a left front concave cylinder rolling supporting guide wheel, and rolling supporting guide wheels on the rear portions of thetwo sides of the drawer roll along guide sliding rails. The telescopic climbing and stepping working platform comprises a working platform body and a foldable telescopic overturning step ladder, anda groove-shaped space is formed in the middle of the working platform body. The equipment and components are high in adaptability in a severe field environment, rescue equipment is convenient to assemble, take and place, and the earthquake disaster emergency rescue guarantee capacity is effectively improved.

A method for arranging comprehensive pipelines in a copper and copper alloy plate and strip processing workshop, characterized in that: a closed underground roadway is used to centrally configure the comprehensive pipeline network facilities in the workshop, and the underground roadway is arranged along the column edges of each span of the workshop. The pipe network facilities such as main cables and various medium pipes are arranged in the underground roadway in the upper, middle and lower layers according to their respective functional characteristics, and are led to the workshop ground through the reserved holes on the side wall of the roadway, and then according to the site equipment The medium and electrical interface positions are connected to overcome the original shortcomings of scattered pipelines, difficult maintenance, and poor cleanliness of the workshop, which can make the pipeline layout of the entire workshop neat and beautiful. High performance, suitable for various modern high-precision copper and copper alloy strip processing plants.

The invention relates to a fresh air ventilator with an indoor air self-purifying function. The fresh air ventilator comprises a machine enclosure as well as a fresh air fan, an air return fan, a heat exchanger and a filter which are mounted in the machine enclosure, wherein an upper air return control valve is mounted between an air return channel and a fresh air channel; after the upper air return control valve is opened, returned air does not enter the heat exchanger any more, but enters the fresh air channel, is discharged into a room through a filter, the fresh air fan and a fresh air discharge tube in sequence along a path of fresh air, so that self-circulating of indoor air is realized.

The invention relates to a stroke input method of Chinese letters bit coding. The etymons are chosen according to the choosing principle. The etymons are aboratively simplified to 25 double strokes composing adding 5 single strokes composing as letters coding cell. The stroke composing adjusts the distribution of the keyboard. The letters input method in the invention has the merits of the reasonable keyboard distribution, simple coding, small memory etymons, short average code, easy learning, and rapid input speed. It fits various kinds of digital keyboard and computer consumers as Chinese letters input implement.