273 results about "Electromechanics" patented technology

The invention relates to an infrared detector with a micro-bridge structure, which belongs to the technical field of micro-electromechanics, and comprises a silicon substrate as a read-out circuit of the infrared detector; a metal reflecting layer deposited on the silicon substrate; a dielectric layer which is deposited in a groove of the metal reflecting layer and has the height being consistentwith that of the metal reflecting layer; a sacrifice layer and a first release protection layer used as protection of release of the sacrifice layer which are deposited on the dielectric layer and the metal reflecting layer and form through holes by lithography and etching; a copper or tungsten pier which is deposited in the through hole of the sacrifice layer; a metal electrode deposited on the copper or tungsten pier and the first release protection layer; and a sensitive material detecting layer which is deposited on the metal electrode and the first release protection layer. A Cu-column micro-bridge structure is manufactured by using the damascene process, and a flat micro-bridge plane is manufactured by introducing the chemical mechanical polishing process (CMP), thereby being conductive to the follow-up process and improving the performances.

The invention relates to a micro material mechanical performance testing platform under stretching-bending-twisting multi-loads, and belongs to the field of electromechanics. The micro material mechanical performance testing platform comprises a tension and compression module, a bending module, a twisting module, a detection control module and a test-piece clamping module, wherein the testing platform takes the tension and compression module as a basic function module; the twisting module is arranged at one end of the tension and compression module; the test-piece clamping module is arranged on the tension and compression module; the bending module is independently arranged at one side of a portal frame. The micro material mechanical performance testing platform can be taken as a material mechanical performance test device with an independent stretching/compressing mode or an independent bending mode or independent twisting mode, namely a single load testing mode, and can be applied to a material mechanical performance test of a twisting load under the given stretching/compressing stress level or a material mechanical performance test of a bending load under the given stretching/compressing stress level, namely a composite load testing mode. The stress strain process of a material under the effect of a composite load can be detected by the collection of a load/displacement signal by using the detection control module.

The invention relates to a cross-scale micro nanometer grade in-situ composite load mechanical property testing platform, belonging to electromechanics. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform is composed of a precision drive and transmission unit, a signal detection and control unit and a clamping, connecting and supporting unit, wherein,in the precision drive and transmission unit, a DC servo motor provides power output, and a two-stage worm and gear mechanism with large reduction ratio and a precision ball screw mechanism transmit power; the signal detection and control unit is composed of a precision displacement sensor, a precision pull pressure sensor and a coder in coaxial rigid connection with the DC servo motor; and the clamping, connecting and supporting unit comprises a clamper component for locating and mounting a standard test specimen, and the like. The cross-scale micro nanometer grade in-situ composite load mechanical property testing platform can be compatible with imaging instruments, and performs a cross-scale in-situ micro nanometer composite load test on a macroscopic test specimen through observation via the imaging instruments, so as to perform in-situ monitoring on processes of microscopic deformation, injury and fracture of materials, so that a new testing method for revealing the mechanical properties and the injury mechanism of the materials at the micro nanometer grade is provided.

The invention relates to a stretching, compression and bending combined load mode material mechanics performance test device under a microscope, and belongs to the electromechanics. A test platform includes a precision stretching/compression load driving unit, a precision bending load driving unit, a clamping unit, a detecting unit and the like. The test platform can be used for the sole stretching/compression test, sole three-point bending test, and the stretching/compression-bending combined load test. The invention has the advantages that the structure is small and compact, and the tests can be performed under the real-time observation of the optical microscope; the loading mode of the combined load is in conformity with the stress state of material and members under the actual workingcondition, and combined with the optical microscopic imaging system, deepgoing study on the micromechanics behavior and denaturing impairment mechanism of the material under the action of combined load can be carried out.

The invention relates to a piezoelectric twin-wafer type MEMS energy collector and a preparation method thereof, which belong to the technical field of micro electromechanics. The piezoelectric twin-wafer type MEMS energy collector comprises a plurality of piezoelectric twin-wafer cantilever beams, wherein each piezoelectric twin-wafer cantilever beam comprises a silicon immobilizing base, a piezoelectric twin wafer and mass blocks, wherein the piezoelectric twin wafer comprises a metal base chip, a two-layer piezoelectric thin film and a two-layer electrode. The method comprises the following steps: using a pulling method for attaching the piezoelectric film to the upper surface and the lower surface of the metal base chip; sputtering or evaporating a layer of metal materials on the piezoelectric film to obtain the piezoelectric twin wafer; pasting the piezoelectric twin wafer on the upper surface of the silicon chip; forming a rectangular groove on the lower surface of the silicon chip; cutting the silicon chip and the piezoelectric twin wafer; preparing a plurality of mass blocks; pasting the mass blocks on the suspended end of the piezoelectric twin wafer; and polarizing the piezoelectric twin wafer. The invention has high conversation efficiency, high output power and simple and reliable manufacture, and has wide application prospects in the design and the manufacture of wireless sensor network nodes.

The invention belongs to the technical field of glass fiber and relates to an enhancement type spinning high-strength and high-modulus glass fiber composition applied to the fields of electromechanics, chemical engineering, aircrafts and the like. The enhancement type spinning glass fiber composition is prepared from, by weight, 56-65% of SiO2, 15-21% of Al2O3, 9-18% of MgO, 5-13% of CaO, 0.1-4% of Y2O3, 0-0.8% of Li2O, 0.1-1% of K2O+Na2O, and 3% or less of other impurities. The enhancement type glass fiber composition is prepared through a tank furnace technological process, by means of optimization and combination of the oxide components and particularly the introduction of Y2O3, the melting temperature, the clarification temperature and the shaping temperature of the enhancement type glass fiber composition are reduced under the situation that high strength and high modulus are guaranteed, the temperature difference between the shaping temperature and the liquidus temperature is increased, the wiredrawing situation is improved, and the enhancement type glass fiber composition is beneficial to the industrial production of high-strength and high-modulus fibers.

Belonging to the technical field of luminescent materials, the invention relates to a fluorescent material able to emit red and green lights under the excitation of blue lights and a preparation method thereof. The fluorescent material of the invention has a general chemical formula of (Na0.5+deltaK0.5-yAy)1-xPrxNbO3: phiC or (Na0.5-yK0.5+deltaAy)1-xPrxNbO3: phiC, wherein, A is one or more of Li, Na and K, C is one or more of Li, Na, K, T1 and Ag, with x greater than or equal to 0.001 and smaller than or equal to 0.01, y greater than or equal to 0 and smaller than 0.5, delta greater than or equal to 0 and smaller than or equal to 0.1, and phi greater than or equal to 0 and smaller than or equal to 0.1. Inherently with piezoelectric, ferroelectric and dielectric properties, the fluorescent material provided in the invention simultaneously has a photoluminescence characteristic when excited by blue lights. Belonging to photoelectric multifunctional materials, the fluorescent material of the invention can be applied to the white LED field, and is expected to be widely applied in the fields of optoelectronic integration, micro electromechanics, photoelectric sensing, etc.

The invention relates to a novel active copper-phosphorus brazing alloy, belonging to a medium-temperature brazing material. Currently, no copper-phosphorus brazing alloy with reasonable formulation design, low price and high performance-price ratio is presented. The novel active copper-phosphorus brazing alloy comprises the following components by weight percent: 1-3.5% of Ag, 6.0-7.5% of P, 0.5-2.5% of Sn, 0.1-1.5% of Ni, 0.1-2.0% of Sb, 0.01-0.5% of Zr and balance of Cu. The novel active copper-phosphorus brazing alloy has the advantages of reasonable formulation design, low price, high performance-price ratio, low melting temperature and good wettability, flowability and plasticity, can be processed to be a welding wire with the minimum diameter of 0.5mm, a welding ring with the minimum inner diameter of 3.0mm and a thin strip with the minimum thickness of 0.1mm and can be widely used for resistance brazing, flame brazing and high-frequency induction brazing in industries of refrigeration, machinery, electromechanics, electrical appliances and valve fittings.

The invention relates to the field of integration of robot vision and electromechanics, in particular to a wide-angle binocular vision identifying and positioning device for a service robot. The invention aims to provide a robot device having wide-angle binocular vision identifying and positioning functions. The wide-angle binocular vision identifying and positioning device for the service robot is provided with a mechanical structure and a control system, wherein the mechanical structure comprises a framework assembly, and a camera and a servo assembly which are arranged on the framework assembly; the control system comprises an MCU (Micro-programmed Control Unit) master controller, a power supply circuit, a head horizontal/vertical servo driver and a left/right eye rotation servo driver; and the MCU master controller is connected with the head horizontal/vertical servo driver and the left/right eye rotation servo driver in a CAN (Controller Area Network) bus communication way.

The invention relates to a blue-excited red fluorescent material and a preparation method thereof, belonging to the field of luminescent materials. The blue-excited red fluorescent material has the following chemical expression: Ca1+d-x-mAmRxBi2Ta2-nBnO9:fC, wherein the R is selected from one or more rare earth elements of Pr, Sm, Eu and Lu; the A is selected from one or more than one of Sr, Ba, Mg, Zn and Cu; the B is selected from one or two of Nb and V; the S is selected from one or more than one of Li, Na, K, Ti, Ag, B, Al, Ga and In, the x is not less than 0.00001 and is not more than 0.1; the m is not less than 0 and is more than 0.99; the n is not less than 0 and is not more than 1.99; the d is not less than 0 and is not more than 0.1; and the f is not less than 0 and is not more than 0.1. The blue-excited red fluorescent material not only has the properties of piezoelectricity, ferroelectricity and dielectricity, but also has the characteristic of blue-excited red emission, belongs to a photoelectric multifunctional material and can be widely applied to the fields of white light LED (Light Emitting Diode), optoelectronic integration, micro electromechanics, photoelectric sense, and the like.

The invention provides a miniature multifunctional motor driving controller, which belongs to the motor control system in the technical field of electromechanics. The motor driving controller comprises a singlechip control system, a JTAG connecting pin, a motor driving module, two power modules, a maximum current selector, a dial switch, a photoelectric coupled isolating circuit, a motor control input port, a fast recovery diode, a motor driving output port, a power supply input port, a serial communication commutator, a serial communication connector, a digital IO port driving chip and an analog and digit IO port connector, wherein the parts are connected in sequence. The miniature multifunctional motor driving controller provided by the invention integrates a driver and a controller, can control a one-path two-phase step motor and a two-path DC motor, and can realize serial control and networking control. The motor driving controller has the characteristics of abundant ports, multiple functions, wide application, small volume and low cost.

The invention belongs to measuring and controlling technique filed of electromechanic system, relates to realizing method and control system based on self-apperceive performer of double-direction electromechanic transducing material. Time division multiplexing decoupling and control system of self-apperceive performer adopts double-direction transducing element, using switching sequence control circuit to control double-direction transducing element as sensor or performer, when the double-direction transducing element is as the sensor, it used sensing switch, when the double-direction transducing element is as the performer, it used executing switch, it uses discharging switch to discharge the double-direction transducing element, the three switches are conducted or closed under control of switch sequence control circuit. The invention decreases volume and weight of electromechanic system, and makes structure controlled integrated and micromated, decreases difficulty of craftwork and installation; it is controlled in parity, increases stability of control. It fits for structure libration initiative control, system identification and health diagnosis, especially fits for flexible structure whose volume and weight are limited.

The invention relates to a structure for growth of aluminum nitride with high scandium doping concentration, and belongs to the technical field of electromechanics. The structure sequentially comprises a silicon substrate, an adhesion layer, a lower electrode layer, an aluminum nitride seed layer, a low scandium-doped concentration aluminum scandium nitride seed layer and a high scandium-doped concentration aluminum scandium nitride piezoelectric layer from bottom to top. The high-scandium-doped-concentration aluminum-scandium nitride piezoelectric film grown by taking the structure as a corepreparation technology has good crystal growth quality, relatively low stress and relatively high piezoelectric coefficient, and a piezoelectric film device prepared on the basis has good performance;moreover, multiple seed layers are adopted to reduce interlayer lattice adaptation, improve the growth quality of the aluminum-scandium nitride crystal and reduce the stress of the film.

The invention discloses an abrasion-resistant polytetrafluoroethylene and aramid fiber reinforced-modified PA66 material and a preparation method thereof. The polytetrafluoroethylene and aramid fiber reinforced-modified PA66 material comprises the following components in percentage by weight: 40-80% of PA66 resin, 3-5% of a compatibilizer, 5-9% of a toughening agent, 1-3% of a coupling agent, 5-15% of polytetrafluoroethylene resin, 5-25% of aramid chopped fiber and 1-3% of other plastics processing additives. PA66 resin is adopted as matrix resin, polytetrafluoroethylene resin and aramid chopped fibers are adopted as filling base materials, the additives having suitable types and proportions are adopted and processed under proper process conditions, the prepared abrasion-resistant polytetrafluoroethylene and aramid fiber reinforced-modified PA66 material has performance indicators, such as tensile strength, flexural strength, flexural modulus, impact strength and thermal stability, which are far superior to those of the traditional fiberglass reinforced-modified PA66 as well as excellent abrasion resistance and excellent chemical resistance and has road market and application prospects in such industries as automobile, aerospace, petrochemical engineering, electromechanics and electronic and electric appliances.

The invention discloses technology for recovering composite polyurethane waste materials of vehicle roof liners. The technology comprises the steps of crushing, curing molding, slicing, roasting, die stamping, cooling and so on. Products which are recovered and formed by the method have superior properties such as unique elasticity, abrasion resistance, low temperature resistance and biological aging resistance, can be widely applied in the industries such as electromechanics, shipping, aviation, vehicle, civil construction, light industry and automobile component, particularly have the functions of heat insulation and shock absorption, are good interior trim materials of automobiles, and simultaneously can be used as bumpers of the automobiles due to superhigh elasticity of the products. Moreover, the shock resistance of the products far exceeds that of pp materials, and the products are suitable to be roof liner materials which have high requirement on sound absorption due to the microcellular structure and unique thermoplastic moldability of the products.

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

The invention discloses an intelligent digital velocity mileage metering installation, and belongs to the field of electromechanics. The installation of the invention comprises N magnetic steels arranged on a tyre hubs, a power module, a Hall sensor, a singlechip, four digit nixie tube, switch that are arranged on a vehicle body. The singlechip is equipped with a timer, a counter, a flash memory. The N magnetic steels have a same size and a same polarity, and N equals to 36. The Hall sensor transmits an induction signal of the magnetic steels to the counter, and at the same time, the timer generates an interrupt signal to the counter. The singlechip reads a value of a start-stop counter, and then the counter is cleared. The singlechip calculates a current running speed and a travelled distance of the current ride, and transmits the data to the four digit nixie tube; meanwhile, the flash memory acquires and stores the data the singlechip output each time. If applied, the invention canavoid a problem of circuit abrasion and has a high counting preciseness and high accuracy.

The invention relates to a heavy-loaded precision-displacement linear motor, which belongs to the technical field of electromechanics. The linear motor comprises an intermediate extension mechanism, a front clamping mechanism, a back clamping mechanism, a non-clearance connecting frame and rigid guide rails, wherein the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism are extensible mechanisms or material bodies; the non-clearance connecting frame arranges and fastens the intermediate extension mechanism in the motion direction; the front clamping mechanism and the back clamping mechanism are arranged at both ends of the intermediate extension mechanism and are fastened through the non-clearance connecting frame; the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism are connected and fixed through the non-clearance connecting frame to form a whole, and the whole is arranged between the rigid guide rails; the non-clearance connecting frame is provided with a bearing; and the position of a frame corresponding to the output extension displacement of the intermediate extension mechanism, the front clamping mechanism and the back clamping mechanism is provided with a hinge with flexible structure. The heavy-loaded precision-displacement linear motor can furthest present the precise extension deformation quantity of a precise deformation mechanism or object as well as the extension output force of a deformation mechanism or object.

The invention supplied a array mode micro-electromechanical capacitive microphone. It includes a foundation support and capacitive microphone device packaged in the foundation support. The capacitive microphone device contains basis material and a pair of analog calculus devices that run under the electronic signal produced by the unit of the capacitive microphone mentioned previously. Thus, the array micro-electromechanical capacitive microphone has high directivity and high signal to noise ratio.

The invention provides a double-folding self-locking gasket which comprises two engaged sub-gaskets. Large wedge-shaped teeth with a circle center as a midpoint are arranged on one face of each sub-gasket, radial arc-shaped teeth with the circle center as the midpoint are arranged on the other face of the sub-gasket, each arc-shaped tooth achieves arc transition from the inner ring edge of the corresponding sub-gasket to the outer ring edge of the corresponding sub-gasket, and the two sub-gaskets are engaged through the end faces of the large wedge-shaped teeth. The double-folding self-locking gasket has the advantages of being good in engagement stability, wide in application range and high in locking capacity, and is suitable for the fields of track traffic, petroleum and petrochemical, power, war industry, electromechanics, ships and aerospace at home and abroad and the like.

A method and system for simulating cardiac function of a patient is disclosed. A patient-specific anatomical model of at least a portion of the patient's heart is generated from medical image data of the patient. Cardiac electrophysiology potentials are calculated over a computational domain defined by the patient-specific anatomical model for each of a plurality of time steps using a patient-specific cardiac electrophysiology model. The electrophysiology potentials acting on a plurality of nodes of the computational domain are calculated in parallel for each time step. Biomechanical forces over the computational domain for each of the plurality of time steps using a cardiac biomechanical model coupled to the cardiac electrophysiology model. The biomechanical forces acting on a plurality of nodes of the mesh domain are estimated in parallel for each time step. Blood flow and cardiac movement are computed at each of the plurality of time steps based on the calculated biomechanical forces. Computed electrophysiology potentials, biomechanical forces and cardiac parameters are displayed, user input is interactively received to change at least one of the parameters of the patient-specific models, and the electrophysiology potentials, the biomechanical forces, and the blood flow and cardiac movement are recalculated.