815 results about "Semi open" patented technology

The invention belongs to agricultural seeding machinery, and in particular relates to a permanent-magnet magnetic-attraction precision seeding device. A semi-open type seed box is arranged on the side of a roller; the roller is fixedly connected with a transmission shaft and follows the transmission shaft to rotate in the single direction; the upper edge of the wall of the roller is uniformly provided with a plurality of through holes in the circumferential direction; a permanent-magnet magnetic attraction head, a magnetic-attraction-head jacket, a magnetic-attraction-head cover plate and a pressure spring are arranged in each through hole; one end of the permanent-magnet magnetic attraction head is arranged in the magnetic-attraction-head jacket, and the other end of the permanent-magnet magnetic attraction head passes through a center hole of the magnetic-attraction-head cover plate but does not exceed the upper surface of the magnetic-attraction-head cover plate; the pressure spring is positioned between the magnetic-attraction-head jacket and the cover plate; a cylindrical cam is hollowly sleeved on the transmission shaft and is fixed; the outline of the cylindrical cam consists of a circular arc surface and a platform surface; and the platform surface is partially arranged on the lower part of the cam. The seeding device has the advantages of improving the magnetic attractive force of the magnetic attraction head, reducing the content of iron powder needed by magnetic-powder coatings of seeds, reducing the structure size of seeding elements and conveniently realizing the automatic seed-taking function and automatic seeding function of the magnetic attraction head.

This invention is a highly efficient filter containing fibers that contain small particle size adsorbents / absorbents such as carbon and / or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highly efficient cigarette smoke filters made from much smaller solid fine particles (preferably 1-50 micrometers in diameter) impregnated in shaped fibers that possess open or semi-opened micro-cavity. The invention further relates to a cigarette having a plug / space / plug or plug / space configuration and having the impregnated filters resided in the space in bonded non-woven or freely unbounded manner to allow controlled TPM delivery.

The invention discloses a modularization LED street lamp with adjustable angle. The street lamp comprises a lamp body, an LED module, a reflecting bowl, a sealing ring, a diffuser, a constant current driver and a power supply, wherein a plurality of module mounting surfaces with different angles are arranged in the diffuser; the reflecting bowl and the LED module which are formed into a whole are arranged on the diffuser; and the sealing ring is embedded inside the periphery of the diffuser. The street lamp is characterized in that the lamp body forms a rotary spindle component in a mode of combining stretching and casting for adjusting an elevation angle of the lamp; and two groups of radiating fins of the lamp body are connected and fixed through rotation of the rotary spindle component, and are movably hinged with a round rod stretched by the fins through a semi-open slot stretched by a main shaft rod. Light with different light-emitting angles can be generated in a mode of adjusting a reasonable combination of angles and slants of an internal light source, so that light emitted by the light source can be more effectively utilized, while excellent radiation effect is considered, and the LED street lamp can accord with the requirement on illuminance and uniformity of the street.

The invention provides an acceleration sensor chip with a compound multiple-beam structure and a manufacturing method thereof. The acceleration sensor chip is characterized in that: four support beams and two sensitive beams support a hanging mass block, and the hanging mass block is suspended; the sensitive beam is provided with a plurality of voltage dependent resistors which are connected to form a semi-open-loop Wheatstone bridge, and an output terminal of the bridge is connected with pads of a chip. The manufacturing method of the chip comprises the following steps: thinning a hang mass block area silicon chip, and carrying out lithography and sputtering on a right side of the chip to form a metal lead wire and the pads; carrying out lithography at a back side of the silicon chip andwet method etching to form a movable structure composed of the sensitive beam, the support beam, and the hang mass block, bonding boron glass at a back side of a silicon chip substrate, and carrying out right side lithography and etching to form gap between a chip movable part and a silicon substrate to obtain the chip. When ensuring measure sensitivity of the sensor, response frequency of the acceleration sensor is raised, and performance of the sensor in dynamic acceleration measurement is enhanced. The manufacturing method of the chip has the characteristics of simplicity and high reliability, and realization of micromation and low cost is facilitated.

The invention provides a testing method and system of semi-opened spoken language examination questions, for realizing fully-automatic grading for the semi-opened spoken language examination questions through starting with a key content detection and text independence evaluation technology and leaping over dependence on voice recognition. In the invention, the evaluation of spoken language voice includes four parts, i.e., content, pronunciation, fluency and rhythm, and therefore, the foundation is laid for the evaluation work of spoken language.

The present invention relates to a light emitting diode (LED) lamp. It includes several LED elements, human body inductor (ultrasonic sensor, electrofocusing infrared sensor, LED reflected infrared sensor and others), light-sensitive element (photoresistor, photodiode and phototransistor, etc.), lamp panel, time regulating switch, control circuit and LED lamp base with bulb and copper lampholder in which it utilizes human body inductor to produce detection effect for human body, generally the LED lamp is in state of low intensity of light, when human body is close to it, then low intensity oflight can be changed into high intensity of light, and when the intensity of the light is insufficient, the lamp source can be completely opened or semi-opened, and when the intensity of light is sufficient, the lamp source can be switched off.

The invention discloses a radical magnetic bearing with independent electromagnet structure, comprising a rotor and a stator arranged at the periphery of the rotor; wherein the stator comprises a case and a plurality of independent electromagnets, and a plurality of electromagnets are arranged on the case at intervals. The invention has flexible structure assembly, stator semi-open type structure can be realized according to the requirement; the electromagnets are mutually independent, interference of magnetic paths between magnetic poles can be effectively avoided, and signal interference between a magnetic pole and a sensor can be avoided, thus being beneficial to improving the reliability of system; each independent electromagnet can be directly used for winding inserting, thus no additional processing mould is required to be added and no special inserting process is required to be designed; independent structure unit is easy to realize, and serialized and standardized parts can be formed, thus costs for maintenance and replacing equipment parts are all greatly reduced.

The invention provides a beam-film four-land structured micro-pressure high-overload sensor chip comprising a silicon substrate, wherein four mass blocks, four single beams and a cross beam are processed on the silicon substrate. The mass blocks are connected with the silicon substrate through the single beams, and are interconnected by virtue of the cross beam; a film is arranged in a space defined by the silicon substrate, the mass blocks, the single beams and the cross beam; the back of the silicon substrate is bonded with Pyrex7740 glass; the backs of the mass blocks are thinned, so that a gap is reserved between the mass blocks and the Pyrex7740 glass, and simultaneously, four anti-adsorption electrodes on the Pyrex7740 glass are inserted into the bonding area; a cavity formed between the film, the mass blocks and the Pyrex7740 glass is vacuumized; four piezoresistor bars are interconnected to form a semi-open loop Wheatstone bridge on the front of the silicon substrate; the whole rigidity is improved by using the four single beams and the cross beam; the stress is concentrated again; and the beam-film four-land structured micro-pressure high-overload sensor chip has the characteristics of high sensitivity and linearity, and simultaneously can resist 500 times of high overload.

The invention provides a micro-voltage high-overload sensor chip of a beam membrane single island structure, comprising a silicon base, wherein a mass block and four single beams are machined at the middle part of the silicon base; a thin film with the thickness of 10-30 mu m is machined in a space surrounded by the silicon base, the mass block and the four single beams; the back side of the silicon base is bonded with Pyrex7740 glass and a gap of 5-10 mu m is reserved between the mass block and the Pyrex7740 glass under a vacuum environment by thinning the back side of the mass block; meanwhile, an anti-adsorbing electrode on the Pyrex7740 glass is inserted into a bonding region and a cavity formed among the thin film, the mass block and the Pyrex7740 glass is vacuumized; and at the front side of the silicon base, four piezoresistor strips are mutually connected to form a semi-open-loop Wheatstone bridge. The four piezoresistor strips are introduced to improve the rigidity of the whole body and the stress is concentrated again; the micro-voltage high-overload sensor chip has the characteristics of good linearity and high flexibility; and meanwhile, the micro-voltage high-overload sensor chip can resist 500 times of high overload.

The invention relates to a beam and groove combined stepped island film micropressure sensor chip and a manufacturing method thereof. The chip comprises a thin film in the middle of a substrate, four shallow grooves are formed along the edges of the upper portion of the thin film, four embossment beams are arranged between the ends of the adjacent shallow grooves and connected with the substrate, and the upper surfaces of the embossment beams, the upper surface of the thin film and the bottom faces of the shallow grooves form a beam and groove combined stepped thin film structure; four piezoresistor strips are arranged on the four embossment beams and connected through metal leads into semi-open-loop Wheatstone bridges, and the output ends of the bridges are connected with bonding pads; four bumps are evenly distributed along the edges of the lower portion of the thin film and connected with the substrate; four mass blocks are spaced from the bumps, and the bumps are connected to the thin film. The manufacturing method includes the steps that the piezoresistor strips are made of SOI silicon wafers in an oxidized mode at high temperature, and an Ohmic contact region is obtained to manufacture the metal leads and the bonding pads; then the four embossment beams and the shallow grooves are manufactured, and the back face of the substrate and anti-overload glass are bonded. The beam and groove combined stepped island film micropressure sensor chip has the advantages of being high in sensitivity and linearity and the like.

The invention provides a micro-electro-mechanical system pressure sensor. The micro-electro-mechanical system pressure sensor includes: a substrate, including at least one conductive wiring; a membrane disposed above the substrate to form a semi-open chamber between the membrane and the substrate, the semi-open chamber having an opening to receive an external pressure; and a cap, disposed above the membrane and forming an enclosed space with the membrane, the cap including a top electrode corresponding to the membrane and at least one portion of the membrane forming a bottom electrode, wherein the top and bottom electrodes form a sensing capacitor to sense the external pressure.

An apparatus is disclosed for flatproofing a tire and wheel assembly with a flexible, lightweight foam-fill by supplying at least two polyurethane reactive materials to a static mixer. The static mixer mixes the reactants, and a nucleating gas is supplied to the mixed reactants in the static mixer to form a liquid reactant mixture with entrained gas. The reactant mixture is injected into the tire and wheel assembly where the mixture reacts and foams replacing the air in the tire with a flexible, lightweight semi-open cell foam-fill. The foam-filled tire and wheel assembly is then allowed to cure.

The invention relates to a model based on a cross-layer shuttle vehicle intensive automatic storage system and an optimization method of the model. Elevators and shuttle vehicles are respectively analyzed, and average service time models of the elevators or the shuttle vehicles at each stage in the stock output operation process of the cross-layer shuttle vehicle intensive automatic storage system are solved; according to the operation processes of the shuttle vehicles and the elevators, with a stock output task serving as a customer and the shuttle vehicles serving as service counters, and the shuttle vehicles serving as customers and the elevators serving as service counters, a multilevel semi-open-loop queueing network model is established for the stock output operation of the cross-layer shuttle vehicle intensive automatic storage system; an approximate average algorithm is used for solving the multilevel semi-open-loop queueing network model, and main performance parameters in evaluation indexes of the cross-layer shuttle vehicle intensive automatic storage system are obtained. By means of the model, the performance of the system under different goods shelf configurations can be accurately and effectively evaluated, the optimal shuttle vehicle and elevator configuration combinations can be obtained, and therefore the design of the system is guided, and the system running cost is saved.

A gas column structure for a shockproof sleeve includes a gas-column sheet, two folding lines and two recessed buffer walls. Each of the recessed buffer walls has U-shaped members formed abreast through heat sealing. The middle short gas columns of the U-shaped members at two sides of the recessed buffer walls are unfilled, so that four corners of the gas column structure for the shockproof sleeve are free from being broken when contacting sharp points. The gas columns of the gas-column sheet may be formed through heat sealing to have irregular shapes, so the gas-column sheet is ideal for articles with sharp points and / or irregular shapes. A dark screen may be additionally provided for covering the accommodating space as a movable screen that covers and thereby protects the semi-open accommodating space.

The invention discloses a method and system for improving the oral evaluation performance. The method comprises the steps that speech data, to be evaluated, of a user are received, wherein the speech data comprise the speech data of reading questions and the speech data of semi-open-ended questions; grading is conducted on the reading questions according to the speech data of the reading questions; self-adaption effective data are obtained from a grading result; according to the self-adaption effective data, a preset acoustic model is optimized; the semi-open-ended questions are evaluated through the optimized acoustic model. By the adoption of the method and system for improving the oral evaluation performance, the accuracy of oral evaluation is effectively improved.

Methods of managing fuel temperatures in fuel injectors for gas turbine engines include cooling fuel circuits by initiating fuel flow therethrough using opened, closed, and semi-open control techniques. A fuel injector for a gas turbine engine includes a feed arm having a fuel inlet fitting for delivering fuel to at least one fuel conduit extending through the feed arm. A nozzle body depends from the feed arm and has at least one fuel circuit extending therethrough. The fuel circuit is configured and adapted to receive fuel from the feed arm and to issue fuel from an exit orifice of the nozzle body. Sensing means are provided adjacent to the at least one fuel circuit. The sensing means are configured and adapted to provide temperature feedback in order to control fuel flow in the at least one fuel circuit to maintain fuel temperature within a predetermined range.

The invention discloses a novel composite material unnotched compression test fixture which comprises a test loading module, a test clamping module and a strain measurement module, wherein the test loading module comprises a base, an end press plate, a clamp block cover plate, a guide shaft and a stroke control key; the test clamping module comprises a press piece, a clamp block and a clamp block guide pillar; the strain measurement module comprises an extensometer clamping piece and an extensometer support pillar. According to the novel composite material unnotched compression test fixture, the clamp block is driven to unclamp or clamp by the up and down movement of the base, and a test piece can be automatically aligned when being clamped by the clamp block; the alignment accuracy can be adjusted by introducing an extensometer and adjusting the screw pitches of threads in the strain measurement module; a series of strain measurement data with different accuracies are acquired, so that a strain measurement part capable of meeting the requirements of the different accuracies can be formed; the clamp block cover plate is assembled with the base by a bolt, so that a semi-open type structure can be formed in the clamping space of the test fixture, the test piece can be conveniently clamped, and the whole efficiency of the test is improved.

The invention relates to a medium-frequency induction heating type thermal double-roll reversible mill and a rolling method. A common double-roll reversible mill is used for hot rolling of magnesium and magnesium alloy, zinc and zinc alloy. In a hot rolling process of the magnesium alloy and the zinc alloy, generally, a blank needs to be heated to be between 400 and 450 DEG C, and simultaneously a roller needs to be preheated to be between 100 and 200 DEG C. A preheating mode for the roller generally adopts flame or a resistance heating mode. The medium-frequency induction heating type thermal double-roll reversible mill comprises a semi-open type induction heater reversible mill body, induction load coils of the mill body are arranged along the axial direction of the roller, a bearing of the mill body is provided with a cooling water channel for cooling cyclic water, a roller heating system of the mill body adopts a crystal gate type medium-frequency induction heating device, and the surface temperature of the roller is detected through a far infrared sensor. The mill and the rolling method are applied in the technical field of rolling.

The invention relates to a semi-opening greenhouse cultivation technology for a peach tree in a low-latitude plateau area. The technology is characterized in that a greenhouse frame is arranged on one surface of a greenhouse; a layer of inspect proof nets and a layer of heat preserving quilts sequentially cover the frame; the heat preserving quilts are controlled by a contracting and stretching bracket to the contracted and stretched, and therefore, the temperature in the greenhouse of the peach tree can be controlled in different growth periods and under the changeful air temperature condition at the low-latitude plateau area; meanwhile, the technologies like the water and fertilizer control technology and the special fruit bag utilizing technology are adopted, thus the damage factor under the natural condition is removed, and the natural growth state of the peach tree is remained to the maximum; the applied pesticide is about 20% that under the common planting condition, the applied chemical fertilizer is about 30% that under the common planting method, the water irrigated is about 40% that under the common planting condition, and the output is more than 150% that under the common planting condition; in addition, the peach quality is far more than that of common peach; the market price is the peach is more than 5 time that of the common peach.

A magnet and magnetometer may be integrated into a smart home environment and allow it to be placed into an away mode of operation despite an entry point being semi-open. The disclosed implementations can detect a magnetic field strength and determine, based on the detected field strength, an approximate distance that a moveable partition is open. In some configurations, the presence of a second magnetic source can be detected. A notice may be generated based on one or more signals received from the magnetometer. The notice may be sent to a controller, a remote system, a remote device, and / or a client device as disclosed herein.

The invention relates to a semi-open and heat-returning type air compression circulation heat pump water heater. The heat pump water heater comprises an air compressor, a heating water tank, a heat returning device and an air expansion machine. The air compressor is communicated with the air inlet end of the heating water tank, the heat returning device is communicated with the air outlet end of the heating water tank, the air outlet end of the heat returning device is directly communicated with the outside environment, a circulation loop is formed between the air expansion machine and the heat returning device in a communicated mode, and the air expansion machine and the air compressor are connected through a transmission coupler. Compared with the prior art, the heat pump water heater is designed based on the reverse Brayton cycle basic principle, a heat pump unit absorbs heat from the environment air in the compressing, heat releasing, expanding and heat absorbing processes and transmits the heat to high-temperature water. Air directly serves as cycle working fluid in the heat pump and is free of damage, pollution and preparing cost, a non-closed structure can be adopted in the using process, the cycle working fluid can be directly obtained from the environment through a cryogenic heat exchanger part, the leakage of the working fluid does not need to be taken into consideration, and the frosting problem under the low-temperature work condition does not exist.

The invention relates to an energy-saving control method for a discharge furnace door of a heat-accumulating heating furnace and belongs to the technical field of automatic control of the furnace door of the heating furnace. The energy-saving control method comprises the following steps that furnace door position detection equipment is added; the heating furnace receives a signal, the furnace door is lifted up and when the furnace door position detection equipment detects that the furnace door reaches a neutral open position, the furnace door stops an action and is in a semi-open state; when a support arm of a discharge machine moves forwards to a set position, the furnace door starts to ascend, and when reaching the altitude limit, the furnace door stops and is in a full-open state; when moving forwards to the forwards limit, the support arm of the discharge machine stops and starts to ascend to lift up a steel billet, and when reaching the altitude limit, the support arm of the discharge machine stops; the support arm of the discharge machine supports out the steel billet and moves back and stops when reaching the back limit; the furnace door starts to be closed and stops at the lower limit position, the support arm of the discharge machine descends and stops when continuously descending to the lower limit position after the steel billet is placed well; the support arm of the discharge machine stops the action when moving back to the rear limit. The energy-saving control method has the advantages that steel discharge time and furnace door full-open time are shortened; the atmosphere in the furnace can be controller better.

The invention provides a bolt gasket assembling device comprising a gasket distribution disc, a bolt duct, an intermittent rotation mechanism and a support, wherein the gasket distribution disc comprises a cover plate and a distribution plate; the cover plate is located above the distribution plate; an inclined bump is arranged on the cover plate; a gasket guide groove is formed in the inclined bump; the cover plate is integrally fixed on the support; a semi-open gasket groove is formed in the edge of the distribution plate and a through hole for the smooth passing of the rod part of a bolt to be assembled is formed at the center of the semi-open gasket groove; the bolt duct is located right above the semi-open gasket groove; the intermittent rotation mechanism is located on the support; a long shaft is arranged at the center of the intermittent rotation mechanism; a long shaft hole is formed in the center of the distribution plate; and the long shaft is in key connection with the long shaft hole; the intermittent rotation mechanism drives the distribution plate to rotate around the long shaft intermittently by means of the long shaft. With the bolt gasket assembling device provided by the invention, the bolt and the gasket can be assembled together conveniently, quickly and effectively; and therefore, the bolt gasket assembling device has a potential market prospect.

An adjustable two-piece juice box holder used for holding juice boxes and the like and preventing spillage when the box is opened and a straw is inserted into an opening in the top of the box and the liquid contents therein is consumed. The holder includes a bottom housing having an open top, a closed bottom, a first side, a second side, a third side and a fourth side. A top portion of the first and third sides includes an outwardly extending push button. A pair of vertical, parallel slits are disposed on opposite sides of the push buttons. The slits provide for forming a pair of flexible tabs in the top portion of the first side and the opposite third side. The flexible tabs with push buttons are used for releasably securing the bottom housing to a top housing. The top housing includes an open bottom, a semi-open top with a frame therearound, a first side, a second side, a third side and a fourth side. The first side and the opposite third side include a lower button hole and an upper button hole. The button holes are used for receiving the push buttons on the tabs when the bottom housing is slidably received inside the open bottom of the top housing.

The invention provides a design method for a non-clogging vortex pump impeller with long and short edgefold blades. The design method is characterized in that the impeller is a semi-open impeller; the blades of the impeller comprise long blades and short blades with different lengths; edgefolds extending in the direction opposite to the rotating direction of the impeller are arranged on the long blades and short blades; the impeller outer diameter of the vortex pump impeller is D2, the impeller outlet width is b2, the impeller inlet diameter is D1, the total number of the blades is Z, the volute bladeless cavity width is L, the edgefold width is b0, and the wrap angle of each blade is phi. The non-clogging vortex pump impeller with long and short edgefold blades, which is designed according to the design method provided by the invention has good hydraulic performance, can effectively reduce energy loss of circulation flow in a pump cavity, increase the passing rate of conveyed solid medium, and improve the efficiency of a vortex pump, and has a good reaction effect after trial use by a user, so that investment and energy sources can be effectively saved.

The invention belongs to the road engineering technical field, in particular to a stress absorbing load bearing complex structure of high viscosity asphalt gap grading. The lower layer of the complex structure layer is high viscosity asphalt gap thick grading mixture and the upper layer thereof is high viscosity asphalt gap semi-open mixture. The void fraction of the low layer mixture is 1%-4% and the low layer mixture comprises aggregate, stuffing, polymer fiber, and high viscosity modified asphalt. The void fraction of the upper layer mixture is 7%-13% and the upper layer mixture comprises aggregate, stuffing, lignin, polymer assorted fiber and high viscosity modified asphalt. The high viscosity modified asphalt used by the two mixtures comprises No. 90 matrix asphalt and defined amount additive agent. The aggregate more than 4.75 mm is coarse aggregate which is basalt, diabase and limestone. The stuffing is ground limestone powdered ore. The two mixtures are easily constructed. And the complex structure has good anti-shearing deformation performance and good resistance function for thermal contraction cracks and reflection cracks.

The invention discloses a data card antenna and a data card. The data card antenna comprises a printed circuit board of the data card, a feeder point and a feeder line, wherein, the printed circuit board is provided with a semi-open slit; the feeder point is arranged at the opening of the slit; the feeder line is led out from the feeder point to seal the opening of the slit; and the universal serial bus (USB) head of the data card is connected with the feeder line. Relative to the prior art, the embodiment of the invention can lead the antenna to well utilize the printed circuit board of the data card for radiation, and promote the radiation capacity of the printed circuit board of a portable computer connected with the data card, thereby leading the antenna to effectively utilize the printed circuit board under the condition of the same bandwidth, thus the occupied space of the antenna is smaller.

The invention discloses an unmanned terminal semi-open type shopping system and method. The system comprises a shopping cabinet, a cloud service platform and a code scanning terminal; the shopping cabinet comprises an electric control door and a quick response code image printed on the surface of the shopping cabinet, a statistical control device is arranged inside the shopping cabinet, and the code scanning terminal is used for scanning quick response codes to be uploaded to the cloud service platform or receive a payment link to complete shopping goods payment; the cloud service platform generates a door opening control instruction to be sent to the corresponding shopping cabinet according to the received quick response code image or generates the payment link to be pushed to the code scanning terminal; under an instruction of the cloud service platform, the statistical control device controls en electric control door of the shopping cabinet to be opened, performs statistics on shopping information, and transmits the information to the cloud service platform. By scanning the quick response code image, door opening control over the shopping cabinet can be achieved, after shoppingis ended, a cloud platform is used for pushing the payment link to allow the user to perform goods payment, and great convenience is provided for user's shopping.