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165results about How to "Solve common problems" patented technology

System and method for realizing integration testing of centralized analog server in cloud computing platform

The invention relates to a system and a method for realizing the integration testing of a centralized analog server in a cloud computing platform. The system comprises an analog server centralized management platform and an analog multi-protocol service function platform, wherein the analog server centralized management platform is used for carrying out centralized management on a receiving request flow of the analog multi-protocol service function platform, a processing service request flow and an analog behavior execution operation in the processing service request flow; and the analog multi-protocol service function platform is used for configuring basic parameters required by a current analog integration testing and a simulator which needs to be used in the current analog integration testing and is used for executing the receiving request flow, the processing service request flow and the analog behavior execution operation in the processing service request flow. The system and the method, which adopt the structure, can simulate the connection of the integration testing before integration, can simulate all practical situations, are convenient and quick in operation, quickly prepare an integration testing environment, carry out the integration testing in advance, effectively improve integration testing efficiency among application systems and have the advantages of being stable and reliable in operation and wide in applicable range.
Owner:PRIMETON INFORMATION TECH

Human behavior recognition method and system based on multi-mode deep Boltzmann machine

The invention discloses a human behavior recognition method and system based on a multi-mode deep Boltzmann machine. The method includes the following steps: 1) acquiring visual and wearable sensor data; 2) building visual data and wearable sensor multi-mode fusion model; 3) carrying out heterogeneous transfer learning by using a deep neural network to reconstruct missing data; 4) performing classification by using a softmax regression model classifier; 5) adaptively adjusting a deep network model generated by common sample data according to user individual characteristics. The human behaviorrecognition method and system can improve the accuracy of human body recognition in the event of complex scenes and missing data.
Owner:SOUTH CHINA UNIV OF TECH

An ancient Chinese translation method based on neural machine translation

ActiveCN109359294ATroubleshoot low-resource language translation issuesTheoretical Research ExtensionNatural language translationSemantic analysisTranslational researchMachine translation
The invention discloses an ancient Chinese translation method based on neural machine translation. Firstly, the standardized ancient Chinese corpus is tagged. Then the tagged results are processed toform an ancient Chinese corpus which can be used as the source of neural machine translation. Finally, the neural machine translation of ancient Chinese is carried out. The invention not only expandsthe theoretical research of the advanced neural machine translation technology, but also enables the technology to be used in the practical application of the ancient Chinese to the modern Chinese with high effect. This patent combines neural machine translation with ancient Chinese translation, which makes this research a highlight in the field of ancient Chinese translation.
Owner:HUBEI UNIV OF ARTS & SCI

Filter speed reducer

The invention discloses a filter speed reducer, which comprises an eccentric shaft, a split spine half-axle dual gear, a fixed gear, an output gear and a rubber alloy layer. The split spine half-axle dual gear, the fixed gear and the output gear are helical bevel gears which are organically meshed to form a backlash-free precise transmission pair and can adaptively compensate for abrasion of tooth surfaces; the rubber alloy layer adhered on the split spine half-axle dual gear can ensure that a transmission component filters fluctuation caused by the conversion of a low speed and high torque into a high speed and low torque of a motor, processing and mounting errors and the like through a controllable elastic distortion quantity in a designed transmission accuracy and bearing capacity range, effectively prevents generation of nonlinear coupled vibration of a transmission system caused by influences of extreme working conditions and special environments, and solves the problems of generation of jam even inflexible lock and the like of the transmission component. Thus, the filter speed reducer has the advantages of high precision, high reliability, long service life, high torque, low energy consumption, small volume and the like, and can be widely applied to equipments in engineering fields, such as robots, space flights, ships and vehicles.
Owner:重庆奔腾科技发展有限公司

Method and apparatus of single-phase fault line selection of duplicate supply looped network

ActiveCN101013811ASolve the problem of faulty line selectionSolve the problem of single-phase ground fault line selectionEmergency protective arrangements for automatic disconnectionFault locationSequence signalComputer module
The invention discloses one double power ring net earth connection fault selection method, which adopts zero sequence current rules for earth connection fault selection. The invention also discloses one double power earth connection selection device, which comprises feedback out wires selection module and its circle circuit and which is characterized by the following: comprising single phase earth connection module and outer circuit; the selection module is composed of time sequence identification, parent zero sequence signal circuit, two paths of power line zero current signal circuits, two paths of power entrance U and W load current signals and output circuit.
Owner:泰安市鲁兴电子科技有限公司

Traffic light full-automatic positioning and recognizing method based on self-regulated learning

ActiveCN103729863ASolving common challenges of location recognitionSolve common problemsImage analysisFrequency domainBalance problems
The invention discloses a traffic light full-automatic positioning and recognizing method based on self-regulated learning. The method includes the steps of firstly, positioning traffic lights according to an inputted video stream in the aspects of the spatial domain, the frequency domain and the time domain so as to obtain final positioning results, and determining the final positions and the final sizes of the traffic lights according to the positioning result of the frequency domain and the positioning result of the time domain; secondly, determining the initial recognition states of the traffic lights according to spatial domain detection results of the traffic lights and the final positioning results of the traffic lights; thirdly, renewing a Gaussian distribution model of pixel values which are generated when the traffic lights are turned on and turned off, and calibrating the initial recognition results based on the renewed model; fourthly, outputting positioning and recognizing results of the traffic lights. By means of the traffic light full-automatic positioning and recognizing method, restrictions such as color restrictions and shape restrictions of the traffic lights are prevented from being excessively depended on, the common difficult problems of positioning and recognizing of the traffic lights in a natural scene such as the color fuzzy problem, the color cast problem, the exposure problem, the automatic white balance problem, the similar interferent problem, the shielding problem, the electronic device aging problem, the long-scale contrast problem and the video jittering problem can be well solved, and the traffic lights are accurately positioned and recognized.
Owner:南京金智视讯技术有限公司 +1

Valve body assembly

The present invention relates to an assembly of a valve body (A) and a seal (11). The valve body (A) comprises a gas flow duct (4) and a shutter (6), movably mounted between an open position and a closed position for closing off the movement of gases in the duct (4). The duct (4) is intended to be connected to a passage (B) to enable the flow of gas therebetween, the seal (11) being intended to be mounted between the duct (4) and the passage (B) to ensure that the gases are sealed off from one another. The assembly is characterized in that the seal (11) forms a seat for the shutter (6) in the closed position. The seal ensures sealing between the duct and the passage, regardless of whether the shutter is in the open or closed position, and ensures the sealing of the shutter in the closed position.
Owner:VALEO SYST DE CONTROLE MOTEUR

Intelligent patrol inspection system and method for power distribution network based on internet of things

The invention provides an intelligent patrol inspection system and method for a power distribution network based on the internet of things. The method comprises the following steps: the inspection personnel logs in an intelligent inspection terminal through an NFC identity recognition module and receives an inspection task and an inspection path integrated optimization strategy; the inspection personnel performs patrol inspection according to the inspection task and the inspection path and recognizes the equipment identity and performs navigation through a "GPS + Beidou" dual-mode positioningmodule; The equipment state information is acquired in real time by a professional sensor acquisition module and an information storage and processing module and stored, preprocessed and uploaded; andthe background application realizes the power distribution equipment state evaluation and diagnosis according to the uploaded state data and generates the next inspection path integrated optimizationstrategy according to the equipment state, the network topology and the geographic information. The drawbacks of low informatization level and high workload of the existing patrol inspection mode canbe overcome, and the quality and the efficiency of power distribution network patrol inspection can be remarkably improved.
Owner:STATE GRID HUBEI ELECTRIC POWER RES INST

Method for measuring radial vibration displacement of eccentric disc

The present invention provides a method for measuring the radial vibration displacement of an eccentric disc for providing the accuracy of the measuring. Displacement sensors are provided on the three positions in the periphery of the measured disc; the signals of each sensor are collected; the signals are processed to obtain the error signal of the change of the distance between the disc and the sensor cased by eccentricity of each measured points and vibration signals in the horizontal direction and the vertical direction, thus, the exact data of the vibration displacement of the eccentric disc. The influence to the exact measuring of the eccentric disc from the installation eccentric error between the disc and the rotor which supports the rotating of the disc caused by the processing and installing error in the measuring of the vibration displacement of the rotatory body is eliminated; the familiar problems in the measuring of the rotatory and mechanical vibration displacement are solved; and the present invention has a remarkable effect on the improving of the precision of the measuring of the rotatory and mechanical vibration displacement.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Axial flow threshing separation facility in tangential feeding type

The present invention relates to a tangential feeding axial-flow threshing separation equipment. Its threshing element adopts short threaded rod-toothed bar combination structure, said short threaded rod is mounted on the threaded rod seat, the toothed bar is positioned at one side of threaded rod seat, its recessed plate adopts grid sieve and punching sieve combination structure, the above-mentioned two structures can be matched with threshing drum so as to implement threshing and separation of crops. Said invention can be used for threshing and separation of several crops of rice, wheat, rape and soybean, etc.
Owner:JIANGSU UNIV

Azeotropic distillation process for separating butanol and butyl acetate

The present invention relates to azeotopic distillation process for separating butanol and butyl acetate. The technological process is completed with the apparatus including rectification tower (1), rectification tower (5), rectification tower (9), kettle reboiler, condensate cooler and phase splitting tank. The technological process includes feeding the material liquid in the middle part of rectification tower (1) and refluxing partial heavy water phase into the tower; refluxing light phase; obtaining butanol product in the kettle; refluxing partial light phase while recovering partially to the rectification tower (5); refluxing partial light phase while obtaining butyl acetate product in rectification tower (5); and feeding the heavy phase to rectification tower (9) and obtaining pure water in the kettle. The present invention has low power consumption, less side products, high butanol product quality, recovery of butyl acetate and high economic effect.
Owner:HEBEI UNIV OF TECH

Novel belt conveyor

ActiveCN103662715AHigh torque/inertia ratioFast energy saving effectConveyorsRollersVideo monitoringHigh energy
The invention belongs to underground coal mine mechanical devices and particularly relates to a novel belt conveyor which solves the problems of high energy consumption and poor safety in the existing belt conveyor. The conveyor comprises a body, an unloading portion, a head portion, a belt tensioning portion, a belt winding and unwinding device, a driving device, a transition off-tracking-proof front-arranged support roll group, a rubber belt, a self-movable tail, a belt protection and control system and a video monitoring system. The novel belt conveyor is applied to a working face of an underground coal mine to convey raw coal in a crossheading mode, can be used for long-distance large-quantity transportation, can adapt to various work conditions and roadway conditions, is high in operation stability and energy utilization rate and simple to operate, greatly reduces labor intensity, saves cost and is an ideal transportation device. The performance of the conveyor can meet the requirements of underground coal mine coal transportation for safety, high efficiency and energy saving, and functions of soft starting, soft braking, automatic tensioning, immediate belt tension adjustment, simultaneous driving of the head and the tail, returning of power generation work conditions and electric energy to a grid, belt off tracking adjustment to achieve stable transportation and the like can be achieved.
Owner:晋能控股装备制造集团金鼎山西煤机有限责任公司

High-speed sampling method and device for test fire smoke particle

The invention discloses a testing fire and smoke grain high-speed sampling method and device, which is provided with a fuel gas interface on a drop burning platform connected with the fuel gas supplying pipeline. The fuel gas interface on the burning platform can be connected with nozzles of different models and an electricity heating zone is arranged at the surrounding zone around the fuel gas interface; or a liquid burning instrument is arranged on the burning platform, which achieves liquid burning fire of different scale through changing the side of a liquid burning container to conduct the corresponding burning study; at the surrounding zone of the heating zone, a ring-shaped filtering net is arranged to realize the stable controlling to burning; at one side of the heating zone or flame zone, a collecting piece is extended into the flame zone, and the collecting piece extends into the heating zone or the different heights or zones above the flame zone. By recording the position parameter of the collecting piece, the invention is beneficial for conducting regulated and repeatable burning experiment study.
Owner:UNIV OF SCI & TECH OF CHINA

Fin line structure-based terahertz third-harmonic mixer

The invention discloses a fin line structure-based terahertz third-harmonic mixer. The fin line structure-based terahertz third-harmonic mixer comprises a metal cavity used for placing circuits, a substrate, a radio frequency input circuit and a local oscillation transitional circuit; the substrate is positioned in the metal cavity; the radio frequency input circuit and the local oscillation transitional circuit are positioned on the substrate; the radio frequency input circuit and the local oscillation transitional circuit are connected through local oscillation matching branches; the input end of the radio frequency input circuit is connected with radio frequency transitional waveguide; the fin line branch structure arranged on the radio frequency input circuit is directly connected withthe metal cavity; a Schottky diode pair on the radio frequency input circuit is mounted on the fin line; the fin line branch structure is also in grounding connection with a direct current; and the direct current grounding is positioned at the radio frequency input end of the radio frequency input circuit. By adoption of the structure, and by adopting the fin line structure in the radio frequencyport, high grounding of the direct current component in the Schottky diode can be ensured, so that the universality problem of the existing old harmonic mixer can be solved; and the terahertz third-harmonic mixer has less spurious signals and high compression point.
Owner:四川众为创通科技有限公司

Waterborne antirust primer

The invention discloses waterborne antirust primer, comprising component A and component B; the component A is made from, by weight, 15-20% of deionized water, 0.1-0.4% of a humidifying agent, 0.1-0.3% of a dispersant, 0-0.5% of a defoaming agent, 32-39% of an antirust material, 5-10% of a filling material, 40-45% of styrene-acrylic emulsion, 0.3-0.8% of a leveling wetting agent, 0.1-0.3% of an associating thickener, 0-1% of a film-forming aid, 0-0.5% of a preservative; the component B is made from, by weight, 70-80% of silicates, 0-10% of silica sol, 2-4% of silane coupling agent, and 12-17%of deionized water. The properties of waterborne antirust coatings are satisfied, and the waterborne antirust coatings have good storage stability.
Owner:福建百花化学股份有限公司

Electronic device for training grenade

The invention relates to an electronic device for training a grenade, which comprises a release safety switch, a power switch, a piezoelectric trigger circuit, a time delay circuit, a self-destruction time circuit, an OR gate, two AND gates, a starting signal transmission circuit, a transmitting antenna, a receiving antenna, a starting signal receiving circuit, an explosion sound simulation circuit transcribed by a speech chip, a loudspeaker, an explosion sound transmission circuit, an explosion sound receiving circuit, an accidentally drop safety circuit and the like. When the grenade touches down or bursts in air in a time delay way, the receiving circuit outside the grenade receives a starting signal transmitted by the transmission circuit on the grenade, a speech chip circuit is started after demodulation, and explosion sound is sent out by the loudspeaker. When the grenade touches down or bursts in the air in the time delay way, the explosion sound which is transmitted on the grenade and is already transcribed on the speech chip of the explosion sound simulation circuit in advance is demodulated and amplified by the receiving circuit outside the grenade. The invention is also provided with the accidentally drop safety circuit and achieves the effect of lifelike simulation.
Owner:刘清成

Prefabricated assembled cable trench and installation method thereof

The invention discloses a prefabricated assembled cable trench and an installation method thereof; and the prefabricated assembled cable trench comprises prefabricated cable trench monomers, the cross section of each monomer is U-shaped trench body, the left and the right trench walls are symmetric and gradually shrink to become narrow from down to up, and the bottom is provided with an arc-shaped water drainage tank. The construction method comprises the following steps that: (a) the trench body is arranged on a plain concrete soil bedding layer with the thickness of 100mm, dry hard cement mortar of 30 to 50mm is paved for leveling when in installation, gaps of 5mm are pre-reserved between the cable trench monomers, and waterproof mortar is adopted for jointing; (b) a cable support is directly fixed on the trench wall by a core through bolt and an expansion bolt, grounding flat steel is put on the core through bolt, and both sides are welded with the support; and (c) a brick plastered trench body is adopted for the corner of the cable trench and T-shaped connector. The invention is characterized by convenient construction, good integrity and low cost.
Owner:SICHUAN POWER TRANSMISSION & TRANSFORMATION CONSTR

Trace template self-adaption method based on variance estimation

The invention provides a trace template self-adaption method based on variance estimation. The method comprises the following steps that firstly, an initial center position of a target and an initial position frame determined according to the initial center position are acquired, wherein the initial center position is marked as x*; secondly, features of the target are acquired based on the initial position frame; thirdly, a target trace template is established according to the features acquired in the second step; fourthly, the target is traced according to the target trace template acquired in the third step, and the current time center position of the target is acquired; fifthly, the dimension of the target trace template is updated according to the current time center position of the target. By means of the method, trace robustness, timeliness and accuracy can be improved.
Owner:上海博康智能信息技术有限公司

Uninterruptible power supply input switching control method and device

The invention discloses an uninterruptible power supply input switching control method and an uninterruptible power supply input switching control device. The control method includes the following steps that: as for any one commercial power relay or battery relay in an uninterruptible power supply (UPS), at a moment when the relay is switched from an actual switched-on state to an actual switched-off state or before that moment, the current in the relay is reduced to zero; after the relay is switched from the actual switched-off state to the actual switched-on state, the current in the relay is adjusted from zero to nonzero; and, at any moment, one relay at most in any one commercial power relay and a battery relay corresponding to the commercial power relay in the uninterruptible power supply (UPS) is set to the actual switched-on state. With the uninterruptible power supply input switching control method and device provided by the technical schemes of the invention adopted, the problem of concurrent switching on or adhesion of relays caused by the delay and discreteness of the action of the relays when the relays are adopted to realize uninterruptible power supply (UPS) input switching in the prior art can be solved, and therefore, the accuracy and safety of the uninterruptible power supply (UPS) input switching can be improved.
Owner:VERTIV CORP

Digital certificate generation method, authentication method and electronic equipment

The embodiment of the invention provides a digital certificate generation method, an authentication method and electronic equipment, and is applied to the digital certificate technology field. The method comprises the following steps: acquiring user related information from a first client; sending a digital identity application request comprising user related information and a first application identifier of the first client to a network identity identification system; receiving a first digital identity fed back by the network identity recognition system, wherein the first application identifier is a unique identifier value allocated to each application by the network identity recognition system; sending a digital certificate application request including user related information, the first application identifier and the first digital identity to a CA certification authority, and receiving the digital certificate issued by the CA certification authority, thereby solving the universal problem of the digital certificate, realizing that one digital certificate can be used in a plurality of digital certificate application systems, reducing the redundancy of the digital certificate, andfurther improving the user experience.
Owner:EIDLINK INFORMATION TECH CO LTD

Partially-enhanced extended finite element method of crack tip unit

The invention relates to the field of fracture mechanics, in particular to a partially-enhanced finite element expansion method of a crack tip unit which comprises the following steps: S1, establishing a crack analysis model; S2, obtaining a matrix equation of partially-enhanced extended finite element method of the crack tip unit; S3, applying boundary conditions and loads, solving a system equation and acquiring a displacement field of a whole model and S4, on the basis of obtaining the displacement field, obtaining a stress intensity factor at crack tips by adopting a cross-phase integral method. The method has the advantages that the crack tip unit adopts a partially enhanced displacement field, and the enhanced displacement field is adopted for a crack tearing part to simulate the displacement discontinuity of a crack surface; for an untorn part, a finite element continuous displacement field is adopted, and simulation of displacement field characteristics of the crack tip unit can be achieved.
Owner:HEFEI GENERAL MACHINERY RES INST +1

Trolley sharing system based on Internet of Things

The invention discloses a trolley sharing system based on the Internet of Things. The trolley sharing system aims at solving the problem that luggage guarding of passengers is troublesome at the airport or railway station. According to the trolley sharing system based on the Internet of Things, through the Internet of Things and the cloud computing technology, the ubiquitous problems of a traditional public trolley are solved; borrowing anytime and stopping anywhere flexible application and a management mechanism are achieved, the functions such as whole process tracking, advance reservation and consulting trolley borrowing are also achieved, and the application convenience of airport trolleys is greatly improved; meanwhile, as the trolleys are shared, the effect of emancipating double hands can be achieved, and the effect of guarding luggage can also be achieved.
Owner:钱嘉怡

Fingerprint identification method adapted for multiple fingerprint sensors and module thereof

InactiveCN1595422ASolve common problemsOvercome the problem that only a single fingerprint optical sensor can be selectedCharacter and pattern recognitionPressure sensorFingerprint
The invention relates to the fingerprint identification method and its module suitable for many fingerprint sensors. Connect the optical sensor or the pressure sensor to the sensor interface of the fingerprint identification module with two software interfaces reserved. Through the simple connection between the user board interface and the fingerprint identification module interface, different sensors can be chosen arbitrarily according to the sensor setting command transmitted from the user board to assist the fingerprint identification module. By this means, the problem of only a single fingerprint optical sensor can be chosen by the fingerprint module is resolved. The invention can be also connected the computer to implement the demonstration of the functions of the fingerprint identification module through the management software. The whole module possesses the advantages of small volume, easy connection, large fingerprint memory, high comparison speed and so on. It can be applied to the small-sized fingerprint verification machine, and it is a good choice to secondarily develop the fingerprint products.
Owner:CHANGCHUN HONGDA OPTOELECTRONICS & BIOSTATISTICS IDENTIFICATION TECH

Method and device in compatibility with different equipment with same firmware

The invention provides a method and device in compatibility with different equipment with the same firmware. The device includes the following modules: a hardware recognition and identification recording module used for recording hardware recognition identifications, a hardware recognition execution module used for reading the hardware recognition identifications and executing operation corresponding to the hardware recognition identifications, an inverse operation generation module used for generating a record of inverse operation of the executed operation, and a recovery module used for executing the inverse operation after a system upgrading function is activated. According to the method and device in compatibility with different equipment with the same firmware, due to the fact only one software package is needed in initialization or upgrading for different equipment, the high maintaining cost brought by the fact that different equipment has different software packages is greatly reduced.
Owner:FUZHOU ROCKCHIP SEMICON

Block chain-based electric vehicle shared charging credible system and method

The invention discloses a block chain-based electric vehicle shared charging credible system and method. The system comprises a private pile owner, a charging pile operator, an electric vehicle user, a shared charging service platform and a trusted environment of a block chain network. Pointers are added for a block structure for rapid search, multi-party contracts are automatically executed to achieve contract content of safe calculation, and a reputation-based incentive mechanism for high-quality charging service is provided. And a shared charging multi-party participation trust environment is established from three aspects of secure storage, secure calculation and secure excitation.
Owner:NORTH CHINA UNIVERSITY OF TECHNOLOGY

Purification method of new 2-nitro-4-methylsulfonylbenzoic acid

The present invention discloses a purification method of new 2-nitro-4-methylsulfonylbenzoic acid. The specific method comprises the following steps: 1) crude 2-nitro-4-methylsulfonylbenzoic acid products are put into an appropriate amount of solvent, the crude products are heated to be 30-150 DEG C in a stirring condition; 2) precipitation temperature is reduced until the products are completely precipitated; and 3) the precipitated products are filtered and filtering cakes are taken to obtain the products. The purity of the 2-nitro-4-methylsulfonylbenzoic acid purified by the technical scheme is more than or equal to 98.5%, and the contents of the key impurities are greatly reduced. At the same time, the technical scheme is very easy to operate, relatively low in purification costs and conductive to be used for industrial productions.
Owner:NUTRICHEM LAB CO LTD

Inoculant for ferritic nodular cast iron and preparation method of inoculant

InactiveCN103146985APromote nucleationImprove the straightness effectExtensibilityChemical composition
The invention discloses an inoculant for a ferritic nodular cast iron and a preparation method of the inoculant, and the inoculant can be used for solving the problems that the nodular graphite cast iron prepared by an existing inoculant is less in graphite nodule quantity, low in ferrite content and poor in extensibility and impact ductility. The inoculant for the ferritic nodular cast iron comprises the following chemical compositions in percentage by mass: 65-70% of Si, 1.0-5.0% of Bi, 2.0-5.0% of Ca, 1.0-4.0% of Ba, less than 0.5% of Al, less than 0.05% of T1, less than 0.4% of Mn, less than 0.02% of S, less than 0.05% of P, and the balance of Fe; and the inoculant is prepared by smelting and granulating the raw materials. The ferritic nodular cast iron produced by using the inoculant can accelerate graphite nucleation, reduce the chilling tendency, increase the graphite nodule quantity, improve the graphite nodule element integration action, further improve the ferrite content under a cast condition, and improve the extensibility and impact ductility of ductile iron.
Owner:SHANDONG HUIFENG CASTING TECH

Universal negative type combined model used in production of diesel engine flywheel with iron mold coated sand

The invention relates to a universal negative type combined model used in production of a diesel engine flywheel with iron mold coated sand. The combined model comprises a flywheel standard template pedestal, a flywheel lower template, a flywheel lower iron mold, a standard interface and a drag water cooling injection plate; the model is characterized in that the flywheel lower template is arranged on the flywheel standard template pedestal and is fixedly connected with the flywheel standard template pedestal through a fillister head screw, a flywheel lower mold sample is assembled on the flywheel lower template, is positioned by a positioning pin and is then fixedly connected with the flywheel lower template through a fillister head screw, the flywheel lower template and a sprue are fixed by a screw, the flywheel lower iron mold is arranged on the flywheel lower template and is fixedly connected with the flywheel lower template through a positioning pin, a positioning pin bush and a screw and the drag water cooling injection plate is provided with a water nozzle, a water channel and a sand nozzle. The universal negative type combined model has the advantages of high production efficiency, substantially reduced cost, simple operation and a high qualified rate of products.
Owner:玉林市达志机械配件有限公司

Common underwater acoustic measurement system

The invention discloses a common underwater acoustic measurement system mainly composed of a transmitting transducer set, a transmitting extension set, a receiving extension set and a display control extension set. The display control extension set is connected with the transmitting extension set and the receiving extension set. The transmitting extension set is connected with the transmitting transducer set and used for driving the transmitting transducer set. The transmitting transducer set is used for finishing underwater launching of acoustic signals in a working frequency band. The transmitting extension set is used for finishing generation of underwater acoustic measurement signals and driving the transmitting transducer set, the receiving extension set is used for finishing receiving, conditioning, collecting and storing of the underground acoustic signals, and the display control extension set is used for finishing parameter setting, transmitting and receiving controlling, state monitoring, received waveform displaying and target strength calculating. The common underwater acoustic measurement system is high in universality and performance cost ratio and convenient to carry and use, the modular design is adopted, and subsystems can be independently used.
Owner:上海瑞洋船舶科技有限公司
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