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523 results about "Parallel plate" patented technology

Capacitance of two parallel plates. The most common capacitor consists of two parallel plates. The capacitance of a parallel plate capacitor depends on the area of the plates A and their separation d. According to Gauss's law, the electric field between the two plates is:

Four-channel fluorescence detection light path module of super-resolution biological microscope

The invention discloses a four-channel fluorescence detection light path module of a super-resolution biological microscope, which divides a fluorescence signal of an intermediate image plane (5) into four conjugate channels (7a-7d) through multi-stage dichroscope light splitting, reflector guiding and lens focal plane adjustment on the premise of not introducing additional aberration, and realizes real-time synchronous detection by using a single large-target-surface camera (8). By adjusting the distance between the reflectors, the inclination angle of the parallel plate glass or the position of the lens, the device can adapt to different camera target surface sizes and compensate chromatic aberration, and the problems of motor switching delay and dual-channel aberration in the prior art are solved.
Owner:BEIJING NANOINSIGHTS-TECH CO LTD

Device and method for testing reliability of power sensor

The invention provides a device and method for testing the reliability of a power sensor, and the device comprises a magnetic field generation unit which is used for providing an alternating current for a Helmholtz coil through a power frequency current source, and generating a controllable magnetic field; the electric field generating unit is used for providing a high-voltage direct current or power frequency alternating current power supply for the parallel-plate capacitor through a high-voltage generator to generate a uniform electric field; the tested unit is used for providing a standard excitation signal through a standard source matched with the to-be-tested sensor, simulating an input condition of the to-be-tested sensor under an actual working condition and collecting output data of the to-be-tested sensor; and the control unit is used for setting test parameters, generating a control instruction according to the test parameters and generating a test result according to the output data. According to the device and the method, by simulating a strong magnetic field and a strong electric field environment and combining application of various measured parameters and an automatic control system, the reliability evaluation requirement of the sensor under the actual working condition is fully met.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2

Self-constrained transverse extension ion optical lens device

The invention discloses a self-constrained transverse extension ion optical lens device, and belongs to the technical field of cluster ion lens devices. The invention discloses a self-constrained transverse extension ion optical lens device which comprises a cuboid vacuum cavity and an ion lens device. The ion lens device comprises an entrance slit of an ion optical lens, an exit slit of the ion optical lens and an electrode group; the electrode group comprises a conical plate electrode group and a parallel plate electrode group; a crack at the head end of the conical plate electrode group forms an inlet slit of the ion optical lens, the tail end of the conical plate electrode group is connected with the head end of the parallel plate electrode group, and a crack at the tail end of the parallel plate electrode group forms an outlet slit of the ion optical lens; one side of the cuboid vacuum cavity is provided with a cluster beam generation device outlet, and the ion lens device is arranged in the cuboid vacuum cavity. Under the condition that the beam density in the prior art is kept unchanged, the cluster beam intensity entering and leaving the ion optical part is increased, and the cluster yield is improved.
Owner:SHENZHEN KUOWEI ATOMIC TECH CO LTD

Connector demating tool with parallel plates

Electrical connector assembly devices, systems, and methods including a demating device configured to separate a first connector and a second connector of an electrical connector assembly. The demating device includes a housing body, a drive assembly including: a drive lever, a trigger configured to push against the drive lever, a drive assembly rod, and a spring mounted around the drive assembly rod; and a demating assembly including: a movable plate having at least two sides, wherein each of the two sides includes at least two prongs; a stationary plate having at least two sides, wherein each of the two sides includes at least two prongs; and a rotary actuator configured to rotate the movable plate.
Owner:HONEYWELL FEDERAL MANUFACTURING & TECHNOLOGIES LLC

Sulfide solid electrolyte based on ionic liquid electrowetting modification and application thereof

The invention discloses a sulfide solid electrolyte based on ionic liquid electrowetting modification and application thereof. The preparation method of the electrolyte comprises the following steps: preparing a sulfide electrolyte into an electrolyte sheet, and coating the surface of the electrolyte sheet with an ionic liquid to form an ionic liquid film, thereby obtaining the electrolyte sheet containing the ionic liquid film; and placing the sulfide solid electrolyte between electrode plates which are arranged in parallel to assemble a parallel-plate capacitor, and applying a direct-current signal to carry out electrowetting treatment, thereby obtaining the sulfide solid electrolyte based on ionic liquid electrowetting. The specific ionic liquid is introduced into the interface of the sulfide solid electrolyte and the negative electrode for electrowetting treatment, so that the interface contact angle is effectively reduced, the interface wettability is improved, the interface impedance is reduced, the electrochemical performance of the all-solid-state battery is improved, and the cycle life of the all-solid-state battery is prolonged. The method particularly focuses on the use of imidazole and pyridine ionic liquids, and selects the appropriate ionic liquid for the lithium metal negative electrode material to realize the optimal interface modification effect.
Owner:SHANGHAI FIRM LITHIUM NEW ENERGY TECH CO LTD +1

Capacitive mold flow sensor system embedded in mold and implementation method

ActiveCN119898057ACapacitanceConverters
The invention discloses a capacitive mold flow sensor system embedded in a mold and an implementation method. The capacitive mold flow sensor system comprises metal polar plates embedded in an upper mold and a lower mold, and parallel-plate capacitors corresponding to the mounting positions of the metal polar plates one by one are formed; the electrifying circuit is used for conducting electricity to the metal polar plate; the capacitance information converter is connected with the metal polar plate and is used for measuring the capacitance value of the parallel-plate capacitor formed by the electrified metal polar plate; the information processing module is connected with the capacitance information converter; the capacitance information converter is used for measuring a capacitance value formed by each parallel-plate capacitor, and the information processing module is used for generating a capacitance value change curve of all parallel-plate capacitors after a material medium is poured into a mold cavity; the mold flow sensor system for measuring the flowing direction of the material medium in the mold cavity is constructed, the flowing direction and position of the material medium are determined according to the sequence of capacitance value changes of the parallel-plate capacitors at different positions, and the mold flow sensor system has the advantages of being high in detection precision, long in service life and the like.
Owner:CHINA MASCH PRECISION FORMING IND TECH RES INST (ANHUI) CO LTD +1

Local resonance phononic crystal based on Kresling origami

The invention relates to the technical field of acoustic function material structure design, in particular to a Kresling origami-based local resonance phononic crystal, which comprises a substrate and a vibration reduction array embedded on the substrate, the vibration reduction array comprises a plurality of unit cell structures arranged in an array. Each unit cell structure comprises at least two spiral Kresling paper folding structures, and lead injection holes penetrating through the Kresling paper folding structures are formed in the Kresling paper folding structures. The substrate is one of an Archimedes spiral parallel plate, a chessboard embedded paper-cut, a double-layer Miura origami or a bistable shell based on a shape memory polymer; the material of the Kresling origami structure is lead, the density is 11600 kg / m < 3 >, the elastic modulus is 20.80 GPa, and the Poisson ratio is 0.369. According to the local resonance photonic crystal provided by the invention, through the unique geometric characteristics, a remarkable vibration band gap is generated in a low-frequency band, and vibration propagation in a specific frequency band is effectively inhibited; according to the Kresling paper folding structure, diversified vibration band gap configuration can be achieved by adjusting the folding angle and the number of layers.
Owner:YANSHAN UNIV

MEMS microphone and electronic device

The invention discloses an MEMS microphone and an electronic device. The MEMS microphone comprises a substrate structure, a diaphragm structure, a support structure and a back electrode structure. The vibrating diaphragm structure is stacked on one side of the substrate structure, the vibrating diaphragm structure comprises a first functional area located in the center and a plurality of second functional areas connected to the peripheral side of the first functional area and arranged in pairs, and each pair of second functional areas are located on the two opposite sides of the first functional area respectively; the supporting structure is stacked on one side of the substrate structure and surrounds the outer side of the vibrating diaphragm structure, and the supporting structure comprises a supporting part and a plurality of functional parts corresponding to the plurality of second functional areas; the back electrode structure is stacked on the side, away from the substrate structure, of the supporting structure and can form a parallel plate capacitor with the first functional area, and when the voltage between the vibrating diaphragm structure and the back electrode structure is larger than a set value, the first functional area can be attracted to the back electrode structure, so that the second functional area can form an interdigital capacitor with the corresponding functional part.
Owner:GOERTEK MICROELECTRONICS CO LTD

Bulk acoustic wave filter integrated with IPD and wireless communication equipment

The utility model provides an IPD-integrated bulk acoustic wave filter and wireless communication equipment, and relates to the technical field of semiconductors. The bulk acoustic wave filter integrated with the IPD comprises a substrate, an acoustic wave reflection structure arranged on the substrate, a film bulk acoustic wave resonator, a parallel plate capacitor and a planar inductor, the film bulk acoustic wave resonator is located above the acoustic wave reflection structure, and the planar inductor is located between the film bulk acoustic wave resonator and the parallel plate capacitor. And the thin film bulk acoustic resonator and the parallel plate capacitor are electrically connected with each other. According to the bulk acoustic wave filter integrated with the IPD, the IPD technology is integrated into the BAW technology, and the integration level and the area utilization rate of the filter are greatly improved. A resonance circuit of the IPD is designed to generate an extremely wide passband, then the bulk acoustic wave resonators are designed, and the frequency of the bulk acoustic wave resonators falls on the two sides of the passband to improve roll-off of the filter, so that the wide passband can be generated, and the good out-of-band rejection effect can be achieved. In addition, by adopting the planar inductor, the technological process of the inductor structure is greatly simplified.
Owner:WUHAN MEMSONICS TECH CO LTD

Three-unit leaky-wave antenna array structure based on dielectric ridge parallel plate waveguide and design method

The invention discloses a three-unit leaky-wave antenna array structure based on a dielectric ridge parallel plate waveguide, which comprises the following steps: S1, designing a three-unit array structure based on the coupling characteristic of the dielectric ridge parallel plate waveguide, and feeding a two-port array antenna in parallel by a probe; and S2, according to the product theorem of a directional diagram, determining the gap design of the three units according to the relationship between the gap size and the leakage amount, so as to design a scanning beam meeting the requirements of narrow lobe and high gain. The leaky-wave antenna array structure with the narrow beam and high gain characteristics is provided for the requirements of high signal strength and strong anti-interference performance in a long-distance point-to-point communication system, the antenna can provide better directivity and higher communication quality, and meanwhile it is guaranteed that the antenna has the advantages of being compact in structure and small in size; therefore, the method can be applied to wireless energy transmission systems such as a satellite communication system, a radar system and the Internet of Things.
Owner:BEIJING JIAOTONG UNIV

Dual-mode high-gain millimeter wave beam scanning antenna

The invention relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom layer dielectric substrate, a first excitation port and a second excitation port are arranged at two ends of the bottom layer dielectric substrate; the top-layer dielectric substrate comprises a +-shaped dielectric covering layer arranged at the top of the bottom-layer dielectric substrate; two ends of the parallel plate slot waveguide are respectively connected with the first substrate integrated waveguide horn and the second substrate integrated waveguide horn; two ends of the first waveguide transition structure are respectively connected with the first excitation port and the first substrate integrated waveguide horn; two ends of the second waveguide transition structure are respectively connected with the second excitation port and the second substrate integrated waveguide horn; according to the invention, large-range beam scanning including backward end radiation can be realized, high-gain single-beam scanning is maintained, the antenna has the characteristics of simple structure, easy integrated processing, high gain and full coverage of the upper half space, and the performance of a millimeter wave wireless communication system is greatly improved.
Owner:GUANGDONG OCEAN UNIVERSITY

Method for quantitative evaluation of gas seal performance of annular blowout preventer

A method for quantitative evaluation of gas seal performance of an annular blowout preventer is provided. The equivalent average contact pressure of the tubing-rubber core sealing surface is acquired based on the principle of equivalent seal contact energy, the tubing-rubber core microscopic contact state is simulated by using elastic-plastic normal flattening contact between the rigid smooth flat plate and the uniformly distributed spherical micro-convex body rough plate, the actual contact area of the single spherical micro-convex body under the equivalent average contact pressure of tubing-rubber core sealing surface is acquired, and then the circumferential width and average height of the microscopic leakage channel at the tubing-rubber core contact interface are acquired, the gas leakage volume rate of gas through the tubing-rubber core interface is acquired by using the parallel plate model in hydrodynamics, and the gas leakage volume rate is compared to the allowable gas leakage volume rate.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Low loss broadband quantum limited Floquet-mode amplifier

A Floquet mode traveling wave parametric amplifier (TWPA) is disclosed. The Floquet mode TWPA comprises a plurality of stages, where each stage is made up of a nonlinear element and a shunt capacitor. The nonlinear elements may be Josephson junctions, or a combination of series and / or parallel Josephson junctions. The Floquet mode TWPA is designed such that the critical current of the nonlinear elements in each stage is not constant. In some embodiments, the ratio of the largest critical current to the smallest critical current in the Floquet mode TWPA is at least 2:1. In some embodiments, the nonlinear elements with the largest critical current are disposed at or near the input or output of the amplifier. In this way, reflections and backward amplification may be minimized. Further, the TWPA is formed using planar capacitors on a high resistivity substrate, or using low loss parallel plate capacitors.
Owner:MASSACHUSETTS INST OF TECH

Dual-stage optical isolator core and optical isolator

The embodiments of the present disclosure discloses an optical isolator core and an optical isolator. The optical isolator core comprises: a first birefringent crystal, a first Faraday rotator, a second birefringent crystal, a second Faraday rotator, and a third birefringent crystal that are successively arrange in the forward light path, all of which are parallel plate structures. The embodiments of the present disclosure achieves backward isolation for polarization-independent and non-collimating beam which simplifies the device structure and assembly process, thereby reduce size and cost.
Owner:SHENZHEN FURUI BEISI PHOTOELECTRIC SCI & TECH CO LTD

Plasma processing apparatus and plasma processing method

A plasma processing apparatus includes a processing container having a processing space where a substrate is disposed; a plasma generation unit including a first electrode and a second electrode which are provided facing each other and are configured as parallel plate electrodes, and having a plasma generating space formed between the first electrode and the second electrode; a radio-frequency power supply unit configured to form a radio-frequency electric field between the first electrode and the second electrode; a gas supply unit configured to supply a processing gas for plasma generation in the plasma generating space; a plasma introduction unit configured to introduce the plasma generated in the plasma generating space to the processing space; and a heat transfer member including an insulator and provided between the first electrode and the second electrode. Plasma processing is performed on the substrate by the plasma introduced to the processing space.
Owner:TOKYO ELECTRON LTD

Small-size single-layer full-color AR optical waveguide based on LCoS optical machine

The invention discloses a small-size single-layer full-color AR optical waveguide based on LCoS, the AR optical waveguide structure comprises an LCoS optical engine, a parallel plate, a coupling-in gradual change period polarization body holographic lens and a two-dimensional coupling-out polarization body holographic grating, and the LCoS is connected with the parallel plate in an optical gluing mode; the gradient period polarization holographic lens is coupled to achieve the effect of light collimation and light deflection coupling, and the wavelength bandwidth is expanded to the visible light range through variable period processing. The two-dimensional coupling-out polarization body holographic grating is used for expanding light rays to two directions, and the pupil expanding effect is achieved. According to the structure, the problem that an LCoS light machine depends on a projection lens, and the size is too large is solved, and the single-layer full-color AR optical waveguide under the small size is achieved.
Owner:SOUTHEAST UNIV +1

Parallel flat plate parallelism measuring method

The invention discloses a method for measuring the parallelism of a parallel plate. The method comprises the following steps: S1, collecting self-interference fringes of the parallel plate through an interferometer; s2, preprocessing the collected self-interference fringes, and filtering noise in a fringe pattern by using median filtering; s3, performing segmentation processing on the image by using a region growing algorithm; and S4, counting the number of bright fringes by using a connected region algorithm so as to calculate the parallelism. A to-be-tested sample is placed on a workbench, an interferometer light path is adjusted to collect a self-interference fringe pattern of the to-be-tested sample, the self-interference fringe pattern is processed, image segmentation is carried out on the self-interference fringe pattern of a parallel plate by utilizing a region growing algorithm, and the self-interference fringe pattern of the to-be-tested sample is obtained. The number of bright fringes after image segmentation is counted through a connected region algorithm, then the parallelism of the sample to be measured is measured, and the method is suitable for measurement of the parallel plate with the good parallelism and is high in measurement precision.
Owner:HENGMAI OPTICAL PRECISION MASCH (HANGZHOU) CO LTD

Modular structures to contain structured sorbent materials for gas separation processes

A modular structure accommodating structured sorbent in a parallel plate arrangement for the separation of gases, such as the removal of CO2 from air in a direct air capture process is provided. The modular structure includes individual units which act as support structures for the sorbent, and the individual units can be assembled into a larger bed of arbitrary dimensions. The sorbent includes parallel plates through which fluid can flow in many directions (at least two perpendicular directions), with additional features in the support structure that mitigate bypassing effects and reduce parasitic thermal mass. A method for integrating sensors into the bed to understand the performance of the bed in gas separation while minimizing damage to the structure or disruption to performance is also provided.
Owner:CARBONCAPTURE INC

Method and system for electrochemical in-situ characterization of crystal growth interface area change

PendingCN119932699AElectric/magnetic area measurementsBy pulling from meltCapacitanceParallel plate
The invention relates to the technical field of crystal growth, and discloses a method and a system for electrochemical in-situ characterization of crystal growth interface area change, and the method comprises the following specific steps: in a crystal growth process by a Czochralski method, measuring impedance between a seed crystal and a crucible containing a melt in real time to obtain an electrochemical impedance spectrum at the growth stage; performing equivalent circuit fitting on the measured electrochemical impedance spectrum to obtain fitting parameters of a corresponding circuit element and calculating equivalent capacitance of a growth interface of the electrochemical impedance spectrum; and calculating the crystal growth interface area through a parallel plate capacitor model based on the equivalent capacitance value. The method solves the problem that the prior art is not suitable for monitoring the crystal growth interface, and has the characteristics of high precision, nondestructive detection, no influence on crystal growth, simple process and controllable cost.
Owner:SUN YAT SEN UNIV

High-integration micro-mechanical accelerometer-gyroscope

The invention discloses a high-integration micro-mechanical accelerometer-gyroscope, and belongs to the technical field of inertial sensing. According to the invention, by sharing a mechanical structure and an electrode, applying a pair of direct-current voltage, resonance voltage and carrier voltage with opposite symbols on a symmetrical parallel-plate capacitor structure, and combining a PLL phase closed-loop control method, resonance driving, amplitude detection and frequency detection of a three-axis structure can be realized at the same time; force balance feedback voltage can be obtained through weighted fusion and controller calculation, the position of the mass block is kept constant, and at the moment, the feedback voltage reflects the acceleration; meanwhile, the three-axis resonant structure is subjected to the coriolis force coupling effect, the sum of the resonant frequencies of the two orthogonal axes comprises angular velocity information of the third orthogonal axis, and the angular velocity can be obtained through multiplication demodulation and low-pass filtering calculation with a sinusoidal signal with the frequency being the difference between the two frequencies. The micro-mechanical accelerometer-gyroscope integration method is simple, and temperature drift can be effectively inhibited at the same time.
Owner:ZHEJIANG UNIV

Measuring device and measuring method for measuring valve stroke difference and valve bridge deformation

The invention relates to the technical field of internal combustion engine operation condition monitoring, in particular to a measuring device and a measuring method for measuring valve stroke difference and valve bridge deformation, a valve bridge guide pillar and a shaft are fixed into a whole, and the valve bridge guide pillar deformation quantity caused by uneven valve stress is calculated by calculating the rotation angle of a T-shaped pointer on the shaft; a parallel plate on a valve guide column is connected with a crankshaft arranged on a shaft through a crank-link mechanism structure, vertical reciprocating motion of the parallel plate is converted into reciprocating rotation motion of the crankshaft through the crank-link mechanism, the crankshaft drives a whole formed by a pointer support and a T-shaped pointer to do reciprocating rotation motion, and the valve stroke difference is obtained through calculation. The valve bridge guide pillar deformation and the valve stroke can be measured at the same time and can also be measured independently, disassembly and assembly are easy, and the precision of the high-speed camera and the dial and the size of each part of the device can be selected according to actual conditions and requirements.
Owner:XIHUA UNIV

Glass substrate structure, preparation and packaging method thereof, electronic component and integrated circuit

PendingCN121729099ACapacitanceParallel plate
The invention relates to the technical field of semiconductors, and discloses a glass substrate structure, a preparation method and a packaging method of the glass substrate structure, an electronic component and an integrated circuit. The conductive interconnection channel penetrates through the glass core plate; the parallel plate capacitor and the first rewiring structure are positioned on the first surface of the glass core plate; wherein the parallel plate capacitor is an aluminum-based capacitor; the second re-wiring structure is positioned on the second surface of the glass core plate; wherein the second surface and the first surface are two opposite surfaces on the glass core plate; the second redistribution structure is electrically connected with the first redistribution structure through the conductive interconnection channel. The glass substrate structure has the advantages that the glass core plate is used for providing basic support, the aluminum-based capacitor is used for simplifying the process and reducing the cost, signal distribution and transmission are achieved through the first rewiring structure and the second rewiring structure, and finally based on cooperation of all the components, the glass substrate structure keeps excellent electrical performance, and meanwhile the electrical performance of the glass substrate structure is improved. And the manufacturing process is simpler and the yield is higher.
Owner:RADIO WAVE MICROCOMMUNICATION (NINGBO) COMMUNICATION TECHNOLOGY CO LTD

328-core fuzz button connector

The utility model belongs to the technical field of fuzz button connectors, and particularly relates to a 328-core fuzz button connector, which adopts a six-cavity structure with two rows of three cavities, each cavity fuzz button and a protective cap form a central contact element, an insulating medium body is coated between the central contact elements, and the central contact elements are in clearance fit with an inner hole of the medium body to form an insulating medium body combined element. The periphery of the insulating medium body assembly is coated with a metal structure, the insulating medium body assembly and the whole frame form an integrated structure, fastening connection with two parallel printed boards is achieved by arranging eight screw holes, guide columns are arranged at the four opposite angles of the two faces, making contact with the printed boards, of the connector, the corresponding space freedom degree can be limited, and the contact precision is improved. The 328-core fuzz button connector can give full play to the overall strength advantage, is high in pin density, is provided with eight locking screw holes and guide columns, achieves high-precision and high-reliability connection under the condition of high vibration, and can be applied to military equipment or other various occasions with high requirements for vertical interconnection reliability and butt joint precision between parallel plates.
Owner:XIAN MODERN CONTROL TECH RES INST

Terahertz MEMS composite membrane switch based on glass substrate

The invention discloses a terahertz MEMS composite membrane switch based on a glass substrate, and belongs to the field of terahertz wireless communication equipment. The MEMS switch is of a three-dimensional structure and sequentially comprises a metal ground, a glass substrate, a coplanar waveguide signal transmission line, a silicon nitride dielectric layer and an MEMS composite film from bottom to top. The MEMS composite film is equivalent to a clamped beam structure, and an anchor area of the MEMS composite film is connected with a signal ground of the CPW; the composite film is composed of a gold film and a silicon dioxide film, the composite film, a silicon nitride dielectric layer below and a CPW signal line form a parallel plate capacitor, bias voltage is loaded through a direct-current voltage signal transmission line connected with an anchor area, the height of the MEMS composite film is changed, then the plate capacitance value is changed, and switching between the on state and the off state of a transmission signal is achieved. The MEMS switch of the composite film has the advantages of low insertion loss and high isolation in terahertz frequency band application, and can be applied to radio frequency devices such as phase shifters, attenuators, reconfigurable filters and the like.
Owner:THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

Sampling device for geological exploration of shale gas

The invention provides a sampling device for shale gas geological exploration, which structurally comprises a movable base, a positioning block, a vertical rod, a height adjuster, a collecting tank and a sampler, and is characterized in that a parallel plate added on the surface layer of the movable base is used as a basis, and four electrifying blocks are used for electrifying a calibration ring on the edge of a vertical through groove; then the calibration ring can scan the edge of the detection hole of the shale through multiple groups of infrared calibration lenses on the circular ring, so that the circle center of the vertical through groove can be aligned with the circle center of the hole of the shale, and if errors exist, error information is fed back to the movable base through an electric signal, so that the movable base can move in a small range according to the error range; the position adjusting effect is achieved, it is ensured that the sampler can be accurately embedded into the hole of the shale in the vertical direction, damage to the edge of the hole of the shale caused by position errors is prevented, and the stability of shale gas sampling is further improved.
Owner:GUIZHOU ENERGY IND RES INST CO LTD

Three-element leaky antenna array structure and design method based on dielectric ridge parallel plate waveguide

This invention discloses a three-element leaky wave antenna array structure based on a dielectric ridge parallel plate waveguide, comprising: S1, designing a three-element array structure based on the coupling characteristics of the dielectric ridge parallel plate waveguide, wherein the two-port array antenna is fed by probes in parallel; S2, determining the slot design of the three elements according to the pattern product theorem and the relationship between slot size and leakage, thereby designing a scanning beam that meets the requirements of narrow beamwidth and high gain. This invention is a leaky wave antenna array structure with narrow beamwidth and high gain characteristics proposed to meet the requirements of high signal strength and strong anti-interference in long-distance point-to-point communication systems. This antenna can provide better directivity and higher communication quality, while ensuring that the antenna has the advantages of compact structure and small size, thus it can be applied to wireless power transmission systems such as satellite communication systems, radar systems, and the Internet of Things.
Owner:BEIJING JIAOTONG UNIV

Gantry type truss for material clamping jaw

The invention provides a gantry type truss for a material clamping jaw, and the gantry type truss structurally comprises a power-on main machine, supporting structures, a parallel plate, auxiliary sliding blocks and a traction rail, the power-on main machine is mounted on the surface layer part of the supporting structures, and the supporting structures are arranged on the left side and the right side of the lower end of the parallel plate respectively; the upper end of the parallel plate coincides with the lower end of the auxiliary sliding block, and the surface layer of the auxiliary sliding block is provided with a restraining rail. After the supporting structure is further improved, on the basis of a height adjuster at the upper end of a supporting rod and a height detection plate on a supporting rod, the height detection plate judges the height of a material and then imports height data into an information receiving module through a data line shaft; and then the information receiving module drives movers on the two sides to drive a balance block and a sliding rod to be adjusted up and down, so that the height of a material clamping jaw on an auxiliary sliding block can be adjusted, and the situation that the material cannot be clamped due to the fact that the height of the material exceeds the clamping area of the material clamping jaw is prevented.
Owner:GUANGDONG LINGNAN FIRST IND & COMMERCIAL TECHNICIAN COLLEGE

Offset-fed reflector parallel plate antenna apparatus

An antenna apparatus described herein includes a first reflector element that comprises a first nonresonant waveguide cavity that is partially bounded by a first parabolic reflector surface. The apparatus optionally includes additional reflector elements arranged in parallel with the first reflector element, where the additional reflector elements include corresponding nonresonant waveguide cavities that are partially bounded by corresponding reflector surfaces. The antenna apparatus is configured to emit an electromagnetic signal based upon electromagnetic signals reflected by the one or more parabolic reflector surfaces and output by the one or more reflector elements. The antenna apparatus may conversely be employed to receive an electromagnetic signal.
Owner:NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA LLC

Coupling stiffness disturbance type MEMS modal localization accelerometer

The invention provides a coupling stiffness disturbance type MEMS modal localization accelerometer, which is characterized in that a core sensing unit adopts a double-tuning-fork resonator parallel arrangement configuration, and an offset weak coupling resonance system is designed and constructed through the difference of equivalent support stiffness parameters. The outer tuning fork resonator is directly connected with the sensitive mass block, the inner tuning fork resonator realizes full-constraint fixation through a base anchor point, and the outer tuning fork resonator and the inner tuning fork resonator form a double-tuning-fork electrostatic weak coupling resonant structure through an electrostatic coupling parallel plate, so that energy transfer between resonant units is realized. The mechanism of the accelerometer is different from that of a traditional rigidity or quality disturbance mode localization sensor, when the accelerometer is subjected to the action of external acceleration, the inertial micro displacement of the accelerometer is converted into coupling rigidity change of the weak coupling resonance system, the resonance unit amplitude ratio of the weak coupling resonance system is detected through an external circuit, and the detection accuracy is improved. Therefore, the detection of coupling rigidity disturbance is realized, and finally the high-sensitivity detection of the measured acceleration is realized.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Resin plate flatness detection equipment

The utility model discloses resin plate flatness detection equipment, and belongs to the technical field of resin plates, the resin plate flatness detection equipment comprises a main body module and a detection module, the main body module comprises two parallel plates, the opposite surfaces of the two parallel plates are fixedly connected with connecting frames, the front end surface of one parallel plate is fixedly connected with a display device, and the front end surface of the other parallel plate is fixedly connected with a display screen. The detection module comprises a transmission assembly arranged between the two parallel plates, a translation assembly is arranged between the adjacent faces of the two connecting frames, an infrared flatness detector is movably connected to the translation assembly, and through the arrangement of the transmission assembly, the translation assembly, an elastic assembly, the infrared flatness detector, a driving assembly and a pressure sensor, the flatness of the workpiece is detected. The detection equipment can detect the resin plate in two modes of pressure and infrared, and a worker can compare the two detection results in a matched manner to judge whether the flatness of the resin plate exists or not, so that the resin plate is subjected to multi-dimensional detection, and the detection accuracy is improved.
Owner:SUZHOU CHUANGYA MATERIAL TECH CO LTD