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35results about How to "Extended rotation time" patented technology

Deepwater aquaculture net cage using wave energy

The invention discloses a deepwater aquaculture net cage using wave energy. The deepwater aquaculture net cage using the wave energy comprises a net cage (4), an anchor chain (2) and a foundation pillar (1). One end of the anchor chain (2) is connected with the net cage (3), the other end of the anchor chain (2) is connected with the foundation pillar (1), and the foundation pillar (1) is fixedly installed on the seabed. The deepwater aquaculture net cage using the wave energy further comprises an automatic feeding system, an automatic subsiding system, a remote monitoring system and an ocean power generation system using wave energy. The ocean power generation system is installed on the periphery of the frame of the net cage, the automatic subsiding system is installed on the upper layer frame of the net cage (4), the automatic feeding system is installed on the middle portion of the top portion of the net cage (4), one terminal of the remote monitoring system is installed on the net cage (4) under water, the other terminal is installed on a controller on shore, and two terminals are connected through a general packet radio service (GPRS) network. And therefore, the electric energy generated through the wave energy supplies energy needed by each system in a deepwater cage aquaculture process.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

Power supply device for door handle

A power supply device for a door handle is provided. A rotation shaft of the door handle is provided with a drive gear, a first speed-change gear, a second speed-change gear, and a generator. Two end of a rotation shaft of the generator are respectively provided with a gravity wheel and a freewheel. The freewheel has one-way teeth, a link plate with link teeth and a third speed-change gear. The third speed-change gear meshes with the second speed-change gear. When the door handle is turned to an angle, the drive gear, the first and second speed-change gears, the third speed-change gear and the freewheel are driven to turn so that the rotation shaft of the generator is turned to generate power for an electric lock (such as a fingerprint lock, a coded lock, a chip induction lock).
Owner:CHANG YU HSIANG

Paramagnetic metal complex functionalized fluorogold nano-cluster magnetic resonance and fluorescence imaging contrast agent

The invention provides a paramagnetic metal complex functionalized fluorogold nano-cluster magnetic resonance and fluorescence imaging contrast agent. The invention relates to the field of magnetic resonance imaging and fluorescence imaging contrast agents. With the contrast agent provided by the invention, problems of existing contrast agents of low relaxation efficiency, high toxicity, low tissue organ selectivity and fast in-vivo metabolism can be solved. According to the invention, ethylenediaminetetraacetic acid (EDTA) or diethylene triaminepentaacetic acid (DTPA) are connected to folic-acid-modified bovine serum albumin fluorogold nano-clusters through amide bonds; and EDTA or DTPA is respectively coordinated with paramagnetic metal ions, such that the complex is obtained. With the contrast agent provided by the invention, the relaxation efficiency can reach 23.7mM<-1>*s<-1>. The contrast agent has an advantage of low toxicity. According to the invention, high spatial resolution of magnetic resonance imaging and high sensitivity of fluorescence imaging are combined. Therefore, the contrast agent provided by the invention can be used in magnetic resonance imaging and fluorescence imaging.
Owner:CHANGCHUN UNIV OF TECH

Simple disinfection cabinet

The invention belongs to the technical field of sterilization or disinfection and particularly relates to a simple disinfection cabinet. The simple disinfection cabinet comprises a cabinet body, wherein a heating plate is fixedly mounted on the inner side of the cabinet body; an air cavity is arranged in the cabinet body; the cabinet body is further internally provided with a placement rack and anintermittent rotating mechanism; a side wall of the air cavity is connected with a support piston in a sliding manner; an elastic returning piece is fixedly connected between the support piston and the cabinet body; an air inlet and nozzles communicated with the air cavity are formed in the cabinet body; a one-way valve is arranged on the air inlet; the placement rack comprises a placement platform and a support rod fixedly connected with the bottom of the placement platform; one end, far away from the placement platform, of the support rod is fixedly connected with the support piston; the intermittent rotating mechanism comprises a wind wheel rotating by the action of gas exhausted from the nozzles, a rotating disc rotating by the action of the wind wheel, and a grooved wheel component allowing the support rod to rotate intermittently by the action of the rotating disc; and the wind wheel and the rotating disc are rotationally connected with the cabinet body. The cabinet can improveheating balance of ware, and improves a disinfection effect and disinfection efficiency.
Owner:CHONGQING RUIHAO TECH DEV CO

Reducing intake manifold pressure during cranking

Embodiments for starting an engine are provided. In one embodiment, an engine control method comprises, during engine cranking, commencing fuel injection when intake manifold pressure drops below a threshold, the threshold based on fuel volatility. In this way, the stability of engine starts using low volatility fuels may be increased.
Owner:FORD GLOBAL TECH LLC

Self-washing pre-filter

The invention belongs to the field of filtering devices and provides a self-washing pre-filter. The self-washing pre-filter comprises an upper barrel body and a lower barrel body, which are matched with each other, wherein a sealed chamber is formed between the upper barrel body and the lower barrel body; a water inlet, which is communicated with the chamber, is formed in the upper part of the upper barrel body; the chamber is internally provided with a filtering device and the chamber is divided into a pure water cavity and a sewage cavity; the pure water cavity is connected with a pure wateropening and the sewage cavity is connected with a sewage opening; the filtering device is further provided with a cleaning device; and the cleaning device can rotate around the filtering device and is used for cleaning the filtering device. According to the self-washing pre-filter provided by the invention, the filtering device can be cleaned, without the need of an external force; the filteringdevice keeps a clean state all the time; and mesh holes of a filtering screen are not blocked and the filtering screen does not need to be taken out for washing and replacement, so that the service life of the filtering device is greatly prolonged.
Owner:白红创

A hyperbranched polymer, and a preparing method and applications thereof

The invention relates to the technical field of preparing a contrast agent by utilizing a hyperbranched polymer. A preparing method of the hyperbranched polymer includes reacting a lysine salt and caustic alkali in a mole ratio of 100:80-90 at 140-160 DEG C for 40-50 h in a protective atmosphere; mixing a hyperbranched polylysine skeleton and diethylenetriaminepentaacetic acid according to a mass ratio of at least 1:5 in water; reacting the mixture at room temperature for 6-8 h; mixing the first hyperbranched polylysine molecule and a gadolinium compound in water; reacting the mixture at 37-42 DEG C for 6-12 h, with the mass ratio of the first hyperbranched polylysine molecule to the gadolinium compound being 1:1-1:2; and mixing and reacting the second hyperbranched polylysine molecule and folic acid in a carbonate the pH value of which is 8-10 for 5-12 h. The hyperbranched polylysine contrast agent has good biocompatibility, low toxicity and a high relaxation rate and can be metabolized in vivo.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI

Application of imatinib mesylate in preparation of drugs for resisting Parkinson's disease (PD)

The invention discloses an application of imatinib mesylate in preparation of drugs for resisting Parkinson's disease (PD). The application of imatinib mesylate (STI571) in preparation of drugs for treating neurodegenerative diseases belongs to the protective range of the invention, and the neurodegenerative diseases can be PD. An experiment proves that by continuous administration of the STI571, the dyskinesia induced by MPTP can be obviously improved, and the cognitive dysfunction of mice can be improved. The STI571 can obviously improve the dopaminergic neuron loss induced by the MPTP, can inhibit the rat CA1 and DG (diacylglycerol) region nerve cell apoptosis reaction induced by rotenone, can obviously inhibit the primary substantia nigra neuron apoptosis and Lewy protein expression induced by rotenone, and can inhibit the phosphorylation activation of PKC (Protein Kinase C) and Akt. The STI571 used as a specific inhibitor of c-Ab1 can resist the formation of PD, can improve the behavioral abnormity and cognitive dysfunction of PD, can be used as a new candidate drug for resisting neurodegenerative diseases such as PD and the like, and has favorable application prospects; and the clinical indications of the STI571 are greatly expanded.
Owner:INSITUTE OF BIOPHYSICS CHINESE ACADEMY OF SCIENCES

Spinning top

InactiveUS20130052909A1Great throwing forceExtended rotation timeTopsEngineeringMechanical engineering
A spinning top includes a main body tapering from a top end to a bottom end thereof and having a rotating tip end at the bottom end, and a plate body including a base portion connected to and covering the top end of the main body, an annular grip portion extending outwardly and radially from the base portion, and a top face defined by top surfaces of the base portion and the annular grip portion. The base portion has a central tapered groove tapering downwardly from the top face of the plate body. The rotating tip end has a diameter smaller than a smallest diameter of the central tapered groove.
Owner:SHYE CHI ENTERPRISE

Magnetic resonance image probe based on hyaluronic acid-peptide dendrimer-gadolinium conjugates and preparation method thereof

ActiveCN106310296AIncreased longitudinal relaxation efficiencyShorten spin timeIn-vivo testing preparationsDendrimerMRI contrast agent
The invention provides a magnetic resonance image probe based on hyaluronic acid-peptide dendrimer-gadolinium conjugates. The magnetic resonance image probe structurally comprises a plurality of fan-shaped peptide dendrimer and gadolinium conjugates connected onto a hyaluronic acid carbohydrate chain. Hyaluronic acid (HA) is selectively taken as a macromolecular skeleton chain segment, and an MRI contrast agent (Dendronized-HA-Gd) based on the hyaluronic acid-peptide dendrimer-gadolinium conjugates is constructed in combination with the advantages of HA and peptide dendrimer. The structural skeleton has a biodegradable capacity, and a degradable segment is constructed without introducing other sensitive bonds.
Owner:SICHUAN UNIV

Grinding device for silica gel production

The invention relates to the field of silica gel grinding, in particular to a grinding device for silica gel production. The grinding device for the silica gel production comprises a machine frame, wherein a motor, an operation cylinder and a collection chamber are sequentially fixed to the machine frame from top to bottom. A planetary gear train, a filtering and screening part and a partition plate are sequentially arranged in the operation cylinder from top to bottom. A material pipe fixed to the motor and a blower positioned at the lower side of the material pipe are arranged on one side ofthe operation cylinder, an output shaft of the motor is coaxially connected with a gear reduction mechanism, a baffle plate is rotatably arranged in the material pipe in a matched mode, the gear reduction mechanism is connected with the baffle plate, and grinding balls are placed in the filtering and screening part. The grinding device for the silica gel production is applied to basic material grinding, the grinding degree of the base material can be sufficient, and the utilization rate of the base material can be improved.
Owner:重庆君诚硅胶有限公司

Staining reagent for staining hematology samples in an automated staining apparatus

Automated staining equipment that can mix reagents is used to spray a Romanowsky stain onto slide mounted specimens which are then briefly centrifuged. The centrifugation step removes excess stain leaving only a thin film. Depending on the time of the centrifugation step, most of the organic solvent and part of the water in the stain are evaporated by airflow through the equipment. This greatly accelerates the staining reaction and preserves water soluble structures such as the granules in basophilic leukocytes. For optimal performance, this staining procedure requires a thiazin-eosin stain with about 90% to about 40% organic solvent, such as methanol, and only about 10% to about 60% water. This is a unique staining reagent in Romanowsky staining.
Owner:WESCOR

Toy top

The invention relates to a toy top for solving the problems that an existing toy top is low in rotating speed and prone to abrasion.The toy top comprises a rotation body of which the upper portion is in a cylindrical shape and the lower portion is in a conical shape, a shaft hole with the closed upper end is formed in the central axis of the rotation body, a rotation shaft which can rotate relative to the rotation body is arranged in the shaft hole, and the lower end of the rotation shaft stretches out of the conical top of the rotation body.According to the toy top, the rotation shaft and the rotation body can mutually rotate, therefore, the rotational kinetic energy losses of the rotation body during toy top rotating can be reduced, the rotating speed of the rotation body can be increased, and the rotating time of the rotation body can be prolonged; meanwhile, the rotation body rotates relative to the rotation shaft, the rotating speed of the rotation shaft relative to the bottom face can be decreased, therefore, abrasion caused by friction between the rotation shaft and the bottom face can be reduced, and the service life of the rotation shaft can be prolonged; meanwhile, the rotation shaft can be replaced, and therefore the service life of the toy top can be prolonged by replacing the rotation shaft with a new one.
Owner:柳州市金旭节能科技有限公司

Gyro

The invention discloses a gyro comprising a gyro body, a handle and an annular cavity. The handle is vertically and fixedly arranged in the center of the upper surface of the gyro body. The annular cavity is arranged inside the gyro body, the circular center of the annular cavity is right under the handle, and the annular cavity is filled with liquid water. The gyro body is made of a plastic material. The gyro of the invention has the advantages of simple structure, long rotation time, and the like.
Owner:王振科

Spinning top

InactiveUS8870622B2Extended rotation timeGripping of the spinning top can be facilitatedTopsEngineeringMechanical engineering
A spinning top includes a main body tapering from a top end to a bottom end thereof and having a rotating tip end at the bottom end, and a plate body including a base portion connected to and covering the top end of the main body, an annular grip portion extending outwardly and radially from the base portion, and a top face defined by top surfaces of the base portion and the annular grip portion. The base portion has a central tapered groove tapering downwardly from the top face of the plate body. The rotating tip end has a diameter smaller than a smallest diameter of the central tapered groove.
Owner:SHYE CHI ENTERPRISE

Spanner used for rotating gear and motor rotor rotating method

The invention discloses a spanner used for rotating a gear and a motor rotor rotating method. The spanner used for rotating the gear comprises a body part, a second locating pin, movable blocks and movable teeth; a handle is arranged at one end of the body part; the second locating pin is connected to the other end of the body part; the movable blocks are installed at the middle section of the body part; the movable teeth are installed on the movable blocks and can rotate within a preset angle. One end of the spanner is connected to a center hole through the locating pin, and the movable teeth are inserted into teeth at the periphery of a gear shaft; torque is applied to the other end of the spanner, is transmitted to the gear shaft through the spanner, and thus a rotor rotates. According to the spanner used for rotating the gear and the motor rotor rotating method, the labor intensity in the rotor rotating process is reduced, the rotation speed and the number of turns of the rotor are increased, the labor and time are saved, the rotation speed per time is high, the rotation time is long, the structure is simple, the manufacturing cost is low, and the thus the motor rotor rotating method is suitable for being developed in batch work.
Owner:CSR ZHUZHOU ELECTRIC CO LTD

Clothes washing control method of washing equipment and washing equipment

The invention belongs to the technical field of washing equipment, and particularly provides a clothes washing control method of washing equipment and the washing equipment. The invention aims to solve the problem of poor fragrance retaining effect of clothes in the fragrance retaining step of existing washing equipment. In order to achieve the purpose, the clothes washing control method of the washing equipment comprises a rinsing step and further comprises a fragrance retaining step after the rinsing step. The fragrance retaining step further comprises the steps of adding a fragrance retaining agent; and controlling a rotating motor to operate in multiple stages, wherein each stage comprises one time of starting and one time of stopping; and the ratio of the start time to the stop time in each stage is defined as a start-stop ratio, and the numerical value of the start-stop ratio of the two adjacent stages is smaller and smaller along with the operation of the fragrance retaining step. According to the invention, fuller contact of clothes and the fragrance retaining agent is converted to longer-time retention, so that more fragrance retaining agent can be retained on the clothes in different stages, the concentration of the fragrance retaining agent on the clothes is enhanced, the fragrance retaining effect is enhanced, and the use experience of a user is improved.
Owner:HEFEI HAIER WASHING MACHINE +1

Control method of clothes processing equipment

The invention provides a control method of clothes processing equipment. Before confirming that a machine door is closed and starting to run, the clothes processing equipment detects whether the content of clothes in the clothes processing equipment reaches a first set value, and if so, the machine door of the clothes processing equipment is locked; otherwise, the locking operation is not carried out. When the content of the clothes in the clothes processing equipment is relatively high, the clothes are relatively prone to colliding with the machine door in the rotating process, even the machine door has the risk of being collided open, and therefore a door lock needs to be controlled to conduct the locking operation to guarantee that the machine door cannot be collided open. And when the content of the clothes in the clothes processing equipment is relatively low and the machine door is not collided open, the machine door is controlled not to be locked, so that the working steps of the clothes processing equipment are simplified.
Owner:QINGDAO HAIER DRUM WASHING MACHINE +1

Deepwater aquaculture net cage using wave energy

The invention discloses a deepwater aquaculture net cage using wave energy. The deepwater aquaculture net cage using the wave energy comprises a net cage (4), an anchor chain (2) and a foundation pillar (1). One end of the anchor chain (2) is connected with the net cage (3), the other end of the anchor chain (2) is connected with the foundation pillar (1), and the foundation pillar (1) is fixedly installed on the seabed. The deepwater aquaculture net cage using the wave energy further comprises an automatic feeding system, an automatic subsiding system, a remote monitoring system and an ocean power generation system using wave energy. The ocean power generation system is installed on the periphery of the frame of the net cage, the automatic subsiding system is installed on the upper layer frame of the net cage (4), the automatic feeding system is installed on the middle portion of the top portion of the net cage (4), one terminal of the remote monitoring system is installed on the net cage (4) under water, the other terminal is installed on a controller on shore, and two terminals are connected through a general packet radio service (GPRS) network. And therefore, the electric energy generated through the wave energy supplies energy needed by each system in a deepwater cage aquaculture process.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

Steering device of carton sealer

The invention relates to a steering device of a carton sealer. The steering device comprises a rack, wherein a plurality of transmission rollers are rotatably arranged on the rack, a motor connected with the transmission rollers is arranged on the rack, a shear fork frame is arranged on the position, located below the transmission rollers, on the rack, a lifting plate is arranged on the shear forkframe, a first driving member connected with the lifting plate is arranged on the rack, a vertical rotating rod located below the transmission rollers is rotationally arranged on the lifting plate, astorage plate is arranged on the rotating rod, a second driving member connected with the rotating rod is arranged on the lifting plate, and the storage plate can penetrate through the transmission rollers and protrude out of a transmission plane of the transmission rollers. The carton sealer has the effect of improving the carton sealing efficiency.
Owner:浙江培恩科技有限公司

Encryption case standby device based on human body activity charging

The invention provides an encryption case standby device based on human body activity charging. The device comprises a box body, and a treading plate is rotationally connected to the inner bottom wallof the box body; the outer side of the rotating shaft is fixedly sleeved with a bevel gear, the inner wall of the lifting base is provided with a rack corresponding to the bevel gear, the top of thelifting base is fixedly connected with a vertical plate, a lever plate is movably installed in the box body and located between the treading plate and the vertical plate, and a charging assembly corresponding to the storage battery is fixedly installed on the back face of the rotating shaft. When a user works, the treading plate is continuously treaded, deflection of the treading plate is continuously generated, the treading plate drives the vertical plate and the lifting base to move up and down through the lever plate; the lifting base drives the bevel gear and the one-way rotation through the rack, and the rotating shaft drives the conductor to rotate, so that magnetic induction lines between the magnet assemblies are cut, an induced current is generated, the storage battery is charged,the power storage capacity of the storage battery can be effectively ensured, and the left side work of the case is further ensured.
Owner:杭州雅凇科技有限公司

Small-sized washing device driven by water power

ActiveCN113897759AGentle Laundry OperationEasy to observe residueOther washing machinesWashing machine with receptaclesCommunicating vesselsStructural engineering
The invention belongs to the technical field of clothes washing devices and discloses a small-sized washing device driven by water power. The small-sized washing device driven by water power comprises an outer barrel and an inner rotating barrel, wherein a sealing end cover is arranged at an opening in one side of the outer barrel; a partition plate is arranged in the other side of the outer barrel; the outer wall of the inner rotating barrel is in rolling connection with the outer barrel; the side, opposite to the opening, of the inner rotating barrel is of a net plate structure; the side wall of the net plate is connected with a rotating shaft; the other end of the rotating shaft penetrates through a sealing bearing on the partition plate; blades are arranged on the section, exceeding the partition plate, of the rotating shaft; an isolation frame is arranged on the side wall of the partition plate to shield the rotating shaft and the blades; a top plate of the isolation frame is connected with a water adding pipe; the upper end of the water adding pipe extends out of the outer cylinder; the top plate of the isolation frame is further connected with a backflow pipe; the other end of the backflow pipe is communicated with the partition plate; a bottom plate of the isolation frame is provided with a first water outlet pipe; a communicating vessel assembly is arranged below the isolation frame; the lower part of the partition plate is provided with a water inlet and outlet pipeline capable of communicating with the communicating vessel assembly; and a second water outlet pipe is arranged on a bottom plate of the outer barrel and can communicate with the communicating vessel assembly.
Owner:HUAIHUA UNIV

A yoyo capable to be manually accelerated when held by hands

ActiveUS20160256790A1Extended rotation timeWide range of utilityTopsToy gearsEngineeringButton pressing
A yoyo capable to be manually accelerated when held by hands comprising two spinning bodies (1), a button (2) and a side cap (3) mounted at center positions of outer sides of the two spinning bodies (1) respectively, a manual acceleration mechanism provided inside the two spinning bodies (1) and connecting the two spinning bodies (1) as a whole, and a bearing (4) disposed between the two spinning bodies (1) for winding a yoyo string; two ends of the manual acceleration mechanism are connected with the spinning bodies (1); by pressing the button (2), the manual acceleration mechanism drives the spinning bodies (10) to spin. The yoyo has a wider range of utility satisfying the playing needs of kids and children and at the same time increasing the ways of playing the yoyo and thus the fun in playing the yoyo. Also, the yoyo allows players to create their own ways of playing the yoyo.
Owner:ALPHA GRP CO LTD +2

Image forming apparatus with mode having prolonged rotation time of image bearing member at non-image forming time

The image forming apparatus includes a rotatable image bearing member, a charging member that is contactably provided to the image bearing member and that charges the image bearing member with a voltage containing an AC component and a DC component; and a control device that makes selection on whether a mode, in which a rotation time of the image bearing member is prolonged and in which a voltage is applied to the charging member in the prolonged rotation time, is performed or not. As a result, the image forming apparatus is provided which performs charging with high stability.
Owner:CANON KK

Automatic refueling device

The invention discloses an automatic refueling device which comprises a differential fuel injection device, a swing device, a lifting device and a transverse moving device. The differential fuel injection device and the swing device are used for inserting an oil gun into a refueling port. The differential fuel injection device drives the oil gun on an oil gun base to rotate in stages in the modes that a driving assembly drives a second arc-shaped rack to rotate and a driven assembly rotates on a first arc-shaped rack, and the swing device is used for moving the differential fuel injection device to the refueling port from the storage position. The lifting device and the transverse moving device are used for adjusting the heights and the horizontal positions of the differential fuel injection device and the swing device correspondingly, and therefore the automatic refueling device adapts to refueling of different vehicles. According to the automatic refueling device, the occupied space of the refueling device can be effectively reduced, the purpose that the oil gun is automatically inserted into the refueling port can be effectively achieved, and the automatic refueling device has the advantages of being small in occupied area, high in refueling port alignment precision and high in refueling speed, saving manpower, achieving uninterrupted refueling, and being simple in structure and low in maintenance cost.
Owner:浙江机电职业技术学院

Yoyo capable to be manually accelerated when held by hands

A yoyo capable to be manually accelerated when held by hands comprising two spinning bodies (1), a button (2) and a side cap (3) mounted at center positions of outer sides of the two spinning bodies (1) respectively, a manual acceleration mechanism provided inside the two spinning bodies (1) and connecting the two spinning bodies (1) as a whole, and a bearing (4) disposed between the two spinning bodies (1) for winding a yoyo string; two ends of the manual acceleration mechanism are connected with the spinning bodies (1); by pressing the button (2), the manual acceleration mechanism drives the spinning bodies (10) to spin. The yoyo has a wider range of utility satisfying the playing needs of kids and children and at the same time increasing the ways of playing the yoyo and thus the fun in playing the yoyo. Also, the yoyo allows players to create their own ways of playing the yoyo.
Owner:ALPHA GRP CO LTD +2

Air circulation device in secondary water supply stainless steel water tank

The invention belongs to the technical field of secondary water supply, and discloses an air circulation device in a secondary water supply stainless steel water tank, which comprises a water tank, the left and right sides of the top of the water tank are fixedly connected with an exhaust pipe and an air inlet pipe respectively, the exhaust pipe is located on the left side of the air inlet pipe, and the outer wall of the lower side of the exhaust pipe is fixedly connected with a liquid inlet pipe; a liquid discharge pipe is fixedly connected to the outer wall of the left side of the water tank, an exhaust assembly is arranged on the exhaust pipe and located on the right side of the liquid inlet pipe, the exhaust assembly comprises a shell connected with the exhaust pipe, two fan blades located in the shell and symmetrically arranged and a driving assembly in transmission connection with the fan blades, and a reinforcing assembly is detachably installed on the upper side of the exhaust assembly. During water supply, water flow drives the two fan blades to rotate, the two fan blades drive the torsional spring to store energy through the transmission assembly, after water supply is stopped, the torsional spring for storing energy drives the fan blades to rotate through the transmission assembly, negative pressure is formed in the shell, and air flow in the water tank is exhausted outdoors through the exhaust pipe.
Owner:无锡市城乡给排水工程设计院有限责任公司

Passive Radar Direction Finding Method and System Based on Single-Receiver Composite Scanning

InactiveCN108363045BMaximum semi-major axis of growthInhibition heightRadio wave reradiation/reflectionPassive radarSide lobe
The invention discloses a passive radar direction-finding method and system based on single receiver compound scanning. The method includes: acquiring the echo signal of a receiver, wherein the receiver uses a compound rotation mode including elliptical motion spiral motion, and the long semi-axis and the short semi-axis of the spiral motion are gradually increased; according to the motion trajectory function of the receiver, determining a slant range of an object to be tested relative to the receiver; determining a discrete echo signal according to the slant range; decomposing the discrete echo signal to obtain a first decomposed echo signal and a second decomposed echo signal; determining a first direction-finding preprocessing vector according to the echo signal and the first decomposedecho signal; determining a second direction-finding preprocessing vector according to the echo signal and the second decomposed echo signal; determining the direction of the object to be tested according to the first direction-finding preprocessing vector and the second direction-finding preprocessing vector. The method and system effectively suppress the height of the side lobe and improves thedirection-finding performance of the passive radar.
Owner:ZHOUKOU NORMAL UNIV
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