64 results about "Indirect coupling" patented technology

A method and apparatus are provided for the secure delivery of converged services to users of wireless devices in a wireless environment. An application layer broker is position between the user devices and the application server to provide an indirect coupling between the enterprise application server and the wireless user devices. The application layer broker links the wireless environment to the enterprise application server through an event triggered content delivery mechanism without providing a direct link between the wireless user device and the enterprise application server. Delivered content can only be accessed by the intended user and the authorized device. The application layer broker provides adaptation to various user devices and the various capabilities associated with each user device. Wireless devices can be upgraded independently from upgrades to the application server. The decoupling performed by the application layer broker separates the service control, such as user registration from the service delivery.

A method and apparatus for minimizing direct coupling between transmitters and receivers on a downhole logging tool are disclosed. One embodiment includes a transmitter, a bucking device, and a plurality of receivers, where signals may be directly coupled from the transmitter into the receivers and signals may be indirectly coupled from the transmitter into the receivers through the formation and borehole environment. The bucking device minimizes the magnitude of the signals that are directly coupled from the transmitter into multiple receivers within the plurality. By varying the current in the bucking device, the bucking device minimizes the magnitude of the directly coupled signal of each receiver in the plurality, and each receiver may utilize a common bucking device.

The invention relates to a remote field eddy current based metal pipeline defect detection device. The device comprises a computer, an STM32 development board, a power amplifier, a first exciting coil, a second exciting coil, a first detecting coil, a second detecting coil, a driving rod, a stepping motor and a shielding plate; the computer controls the STM32 development board to generate a sinusoidal signal which is amplified by the power amplifier prior to being loaded on the first exciting coil and the second exciting coil, a magnetic field generated is propagated in two different coupling paths which are an indirect coupling energy path and a direct coupling energy path respectively, indirect coupling magnetic field signals are measured through the first detection coil and the second detection coil, the signals are acquired into the STM32 development board, and whether defects present or not can be visually displayed by observing amplitude of the signals and phase changes. Hall elements and oscilloscopes are not required, and the detection device has the advantages of high operability, low cost and the like and can be applied to various practical engineering.

Through indirect coupling, the method inputs outer AC signals to target cables in a set of cable. The other end of the set of cable outputs coupled AC current of each cable respectively. Detecting phase of each coupled output current, the method selects target cables based on phases. The invention also discloses a cable identification instrument. Before identifying cable, the method does not need to disconnect connections between two ends of each cable and equipment of transformer, switchgear, i.e. cable is in electrification state. Features are: simplifying operation for identifying cables, raised efficiency for identifying cables, reducing emergent loss caused by power cut so as to guarantee quality of service.

The embodiment of the invention provides an RFID (Radio Frequency Identification) tag management method for wine type liquid container management. The method mainly comprises the following steps that: a conductive buckle ring is arranged at the inner side of a wine type liquid container bottle cap; an RFID tag is attached to the inner side of the buckle ring; and a power supply loop of an IC (Integrated Circuit) chip of the RFID tag and the buckle ring are rotationally combined in the horizontal plane in an indirect coupling mode. According to the embodiment of the invention, the RFID tag is attached to rubber foam arranged at the inner side of the metal buckle ring, so that the security and high antifalsification of the RFID tag are improved. The annular power supply loop of the IC chip of the RFID tag and the conductive buckle ring are rotationally combined in the horizontal plane, so that the method has the characteristic that in the aspect of radiation gain improvement when the conductive buckle ring per se is used as the RFID tag, the deviation of the identification position difference in the horizontal plane and the omni-directional radiation structure in the plane is reduced to the minimum degree.

Disclosed is an electronic circuit for the bidirectional conversion of a high input voltage to a direct-current output voltage with indirect coupling, more specifically such a circuit for use in a power supply system for rail vehicles, that is provided with a primary converter, one single common transformer and a secondary converter. The primary converter includes at least three primary converter sections connected in series, the output lines of which are each connected to a respective one of the transformer primary windings.

The invention relates to an indirect coupling conic fiber grating ultrasonic sensor. According to the indirect coupling conic fiber grating ultrasonic sensor, an upper end of a casing is provided with a sealing cover for processing a center hole, a sealing cover noise abatement pad is arranged between the sealing cover and the casing, a lower end of the casing is provided with a sound coupling cone, a sound coupling noise abatement pad is arranged between the sound coupling cone and the lower end of the casing, the top portion of the sound coupling cone is provided with a light guide fiber mounting hole through processing, one end of a light guide fiber is arranged in the light guide fiber mounting hole, the other end of the light guide fiber penetrates through the center hole of the sealing cover, the light guide fiber is provided with a grating, grating zone length of the grating is 1-10mm, and wavelength is 1540-1560nm. Based on tests, the sensor has excellent response performance, stability and sensitivity for 300KHz wave band ultrasonic signals, under the real-time acquisition mode, the spectrum signal to noise ratio is high, the ultrasonic signals reflected on upper and lower surfaces of organic glass can be intelligibly identified, the ultrasonic signals are suitable for dynamic scanning acquisition in an earthquake physics model, ultrasonic multi-layer imaging can be realized, and the sensor can be applied to the nondestructive structure test, oil and gas field physics model imaging, elastic wave speed modeling and biologic and medical technology fields.

The invention provides an LED driving circuit applicable to a silicon controlled rectifier light modulator, and a control circuit thereof. The control circuit comprises a light modulation phase detection circuit, a phase filtering circuit connected with the light modulation phase detection circuit, a non-linear reference circuit connected with the phase filtering circuit, a zero cross detection circuit in direct or indirect coupling with an output end of the LED driving circuit, an output current simulation circuit connected with the zero cross detection circuit, an average current ring adjusting circuit connected with the non-linear reference circuit and the output current simulation circuit, a reset circuit connected with the average current ring adjusting circuit, an interrupted time-delay circuit connected with the phase filtering circuit, and a main driving circuit connected with the reset circuit, the interrupted time-delay circuit and the zero cross detection circuit. The control circuit can realize high power factor single-stage light modulation and has advantages of no scintillation and good compatibility.

The invention relates to a low-coupling dual-frequency antenna array based on an H-shaped micro-strip resonator, belonging to the technical field of antenna designs. The low-coupling dual-frequency antenna array comprises a dielectric substrate, micro-strip antenna units and the H-shaped micro-strip resonator, wherein the micro-strip antenna units are rectangular micro-strip antennas, are symmetrically arranged at the both sides of the dielectric substrate, and have two working frequencies; the H-shaped micro-strip resonator is located between the micro-strip antenna units and used for generating resonance on the two frequencies respectively, and the formed indirect coupling route counteracts direct coupling between two array elements; the resonant frequency generated by the H-shaped micro-strip resonator can be adjusted by changing the lengths of upper and lower stubs. The low-coupling dual-frequency antenna array based on the H-shaped micro-strip resonator provided by the invention is capable of effectively reducing the coupling coefficient of a micro-strip antenna array without any additional cost, and is easy to process.

A method and mechanism of the indirect coupling torque control provides a rotary impact mechanism driving a rotary drive mechanism linked between the rotary impact mechanism and a fastener member, when the rotary impact mechanism rotates the fastener member. The rotary drive mechanism can accumulate a rotation stress generated by the rotary impact mechanism to rotate the fastener member. When the rotation stress accumulated in the rotary drive mechanism is larger than the torque value applied to the fastener member, a linear relation between a sensed signal measured from the stress accumulated in the rotary drive mechanism and the torque value applied to the fastener member is provided. Whereby the linear relation is used to control the torque valued applied to the fastener member when the rotary impact mechanism is rotating.

The invention discloses a multi-layer electromagnetic shielding pulse far-field eddy current detection sensor. Three layers of shielding layers made from high-magnetic-permeability high-conductivity materials are used between an excitation coil and a detection coil to serve as an isolation device for direct coupling energy, so that the direct coupling energy is bound in the shielding layers. Indirect coupling energy outside the shielding layers account for a main part. Far-field signals can be detected through the detection coil. The three-layer electromagnetic shielding device is used, and afar-field eddy current phenomenon is generated in a ferromagnetic flat plate, so that the detection depth is larger, and detection of sub-surface defects is achieved.

The invention relates to a system and a method for biological coupling photocatalytic synchronous treatment of degradation-resistant organic wastewater. The system comprises a sand filtering device, abiological coupling photocatalytic device, a solar power generation system and a PLC control system. The sand filtering device removes suspended solids in the organic wastewater for pre-treatment ofbiological coupling photocatalysis. The biological coupling photocatalytic device is directly coupled to photo-catalytic oxidation and biodegradation technologies, so that photo-catalytic oxidation and biodegradation are carried out synchronously. Compared with an indirect coupling way, the operating cost and the treatment difficulty are reduced, and the occupied area of equipment is reduced and the cost is lowered. Meanwhile, the solar power generation system supplies power to a photocatalytic light source, so that the operating cost is further lowered. The PLC control system monitors a system process intelligently in real time, so that the operating stability is guaranteed. The system and the method forbiological coupling photocatalytic synchronous treatment of degradation-resistant organic wastewater provided by the invention can degrade degradation-resistant organic matters quickly and efficiently. The whole system is stable to operate and low in energy consumption.

The embodiment of the invention provides electronic equipment. The electronic equipment comprises a first decoupling piece, a first radiator, a second radiator, a first feed unit, a second feed unit and a rear cover, wherein a first gap is formed between the first radiator and the second radiator; the first radiator comprises a first feeding point, and the first feeding unit feeds at the first feeding point; the second radiator comprises a second feeding point, and the second feeding unit feeds at the second feeding point; the first decoupling piece is in indirect coupling connection with the first radiator and the second radiator; and the first decoupling piece is arranged on the surface of the rear cover. According to the technical scheme provided by the embodiment of the invention, under the configuration that multiple antennas are compactly arranged, the antenna has the characteristic of high isolation in a designed frequency band, good radiation efficiency and low ECC of the antenna can be maintained, and good communication quality is achieved.

The invention discloses a temperature field analysis method of an engine exhaust manifold considering heat radiation, which comprises the following steps: 1, creating a parameterized geometric modelsof a solid domain and a fluid domain by using CAD modeling software; 2. establishing the mesh models of solid and fluid domains; 3, establishing the thermodynamic model of the engine and controlling the relative error between the thermodynamic calculation value of the engine and the external characteristic t data of the engine; 4. defining the thermal boundary conditions of convective heat transfer and thermal radiation; 5, performing the indirect coupling iterative computation of the solid domain and the fluid domain. The invention can compensate for the difficulty of directly evaluating thetemperature field distribution and the heat radiation level of the exhaust manifold in the design process of the exhaust manifold and the valve chamber cover, and solve the problems of cracking failure of the exhaust manifold and melting of the valve chamber cover due to the heat radiation.

The invention discloses an extensible quantum information processing system and method, and relates to the technical field of quantum computing. The structure of the extensible quantum information processing system comprises a columnar diamond sample, an optical system, a microwave system, a magnetic field system, a carbon nanotube double-quantum-dot sample, a low-temperature system, a data acquisition system and an electric control system. The invention provides a carbon nanotube-spinning hybrid quantum system, wherein microwave signals and a magnetic field are applied to an area where each group of nitrogen vacancy centers and quantum dots are located, and magnetic dipole-dipole interaction exists between electrons of each group of nitrogen vacancy centers and the quantum dots; and by controlling a magnetic field and a microwave signal, indirect coupling between two nitrogen-vacancy centers which are spaced by a micron dimension can be realized through the action of the carbon nano tube, and quantum entanglement between the two nitrogen-vacancy centers in a long distance is realized, so that an extensible quantum information processing method is provided.

Systems and methods of downhole power generation are disclosed, which provide for the generation of electrical power in a downhole environment by the use of an electrical generator coupled to a hydraulic circuit that receives energy from a source in the downhole environment. The hydraulic circuit can receive energy from flowing drilling fluid and / or from kinetic energy of one or more portions of the drill string. A direct or indirect coupling can be used to transfer energy from the downhole environment to a pump in the hydraulic circuit, which can act as a hydraulic flow source, providing flow through a flow regulation device or control circuit. The hydraulic fluid under such control can then be used to turn a hydraulic motor, which is used to turn an electric generator for the generation of electricity for downhole tools such as logging tools, related telemetry, and the like.

The invention discloses a cereal bionic rubbing threshing test bed. The cereal bionic rubbing threshing test bed is composed of an upper threshing device, a lower threshing device, a tracking observing device, an instrument device and a rack. The test bed can test three threshing modes including moving rubbing, rotating rubbing and combined rubbing through the rotation of an upper threshing platform and the reciprocating movement of a lower threshing platform. By means of the mounting and dismounting of an upper threshing roller, two working planes of indirect coupling rubbing and direct coupling rubbing are formed through an upper threshing bionic sample piece and a lower threshing bionic sample piece. The height of the upper threshing platform is adjusted by adjusting bolts, a high-speed vidicon is used for shooting the cereal threshing microprocess, a tension sensor is used for detecting horizontal rubbing force, a variable-frequency speed controller is used for changing the revolving speed of an upper threshing motor and the revolving speed of a lower threshing motor, and stepless speed regulating and speed displaying of the rubbing movement are achieved. The lower threshing device moves through a crank and rocker mechanism, and the movement of the lower threshing device is high in bionic approximation degree of the manual wheat rubbing behavior. The cereal bionic rubbing threshing test bed is high in rubbing threshing test micro-testing capability, complete in testing index, good in universality and simple in structure, and the test sample pieces are installed conveniently.

A method for floating node reduction uses a capacitance matrix that specifies coupling capacitances between signal nodes and floating nodes of an interconnect structure. Random walks are performed from a first signal node to the other signal nodes, wherein each of the random walks traverses one or more of the floating nodes. Each of the random walks is directed based on probabilities derived from the coupling capacitances of the capacitance matrix. A count is maintained for each of the other signal nodes, wherein each count specifies a number of the random walks that end on the corresponding signal node. The indirect coupling capacitance from the first signal node to a second signal node is selected to correspond with the total indirect coupling capacitance of the first signal node, times the count associated with the second signal node, divided by the total number of random walks.

The invention provides a method for measuring a homonuclear indirect coupling network. Through the design of a pulse sequence, a selective pulse, a PSYCHE module and three-dimensional data sampling and splicing are utilized to finally obtain a two-dimensional spectrum representing the homonuclear indirect coupling network, wherein one dimension only displays spin-chemical shift information in a coupling network, no coupling signals exist, and the other dimension displays spin and interesting spin indirect coupling constants; and a simple and reliable method is provided for accurate measurementof the indirect coupling information. According to the method in the invention, only a compiled pulse sequence and the corresponding data postprocessing codes need to be imported on the spectrometerin a text format without the need of special hardware devices, and the method can be applied to any conventional nuclear magnetic resonance spectrometer.

The invention discloses a simulation method for directly coupling three loads of temperature, pressure and vibration on a sensor. The method comprises the following steps: firstly, converting a frequency domain signal of a vibration load into a time domain signal, and expanding to obtain a long-time time time domain signal; adopting ANSYS work bench software to model the sensor, and completing pretreatment; performing simulation setting of direct coupling; wherein the simulation solving step length is 2; in the first solving step, applying a pressure load and a temperature load to the sensor;in the second solving step, enabling a long-time time domain signal to serve as a vibration load to be applied to the sensor, performing direct coupling simulation of the three loads to obtain stressdistribution of the whole structure of the sensor within the whole simulation time wherein the sub-step length of the second solving step is not larger than the minimum time length of change of the long-time time domain signal; and performing post-processing on the simulation result to obtain a simulation maximum value of the sensor under coupling of three loads. According to the simulation methodprovided by the invention, the problems of errors, boundary constraint conflicts and difficulty in exporting an initial stress file in frequency domain simulation of an indirect coupling simulation method are solved.

An acoustic transducer includes a housing, a plurality of diaphragms suspended from the housing and separated into one or more groups, and one or more motors combined with the housing that operate in response to an electrical signal. The diaphragms of each group are driven by a respective motor to which all the diaphragms in the group are coupled and at least one motor has an indirect coupling with no direct mechanical connection to the diaphragms driven thereby. One or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers.

The invention provides a weld joint array far-field eddy current detection probe which at least comprises an excitation unit used for generating an excitation magnetic field, a detection unit used forpicking up eddy current field signals containing detected weld joint defect information in a far-field mode, and a shielding unit used for blocking a direct coupling electromagnetic field induced bythe excitation unit. The excitation unit comprises an excitation magnetizer and an excitation coil wound on the excitation magnetizer, the detection unit comprises a detection coil group perpendicularto the trend of the weld joint, and the shielding unit comprises a first shielding piece capable of accommodating the excitation unit and the detection unit. The invention further provides welding seam array far-field eddy current testing. According to the invention, a low-frequency electromagnetic field generated by the excitation coil can permeate into the weld joint and form an indirect coupling electromagnetic field in the weld joint, so that the detection coil group in a far field area can pick up an eddy current field signal containing defect information of the detected weld joint, andthe aim of detecting hidden defects in the weld joint is fulfilled.

A method and apparatus for generating a high voltage at a battery system. The apparatus in one embodiment includes a supply node configured for direct or indirect coupling to a supply voltage. A converter is coupled between an input node and an output node, wherein the converter is configured to operate in a forward mode or a reverse mode. The converter generates a voltage at the converter output node for charging a battery when operating in the forward mode, wherein a magnitude of the voltage generated at the converter output node is less than a magnitude of the supply voltage. The converter generates a voltage at the converter input node when operating in the reverse mode, wherein a magnitude of the voltage generated at the converter input node is different than a magnitude of a voltage provided by the battery. A control circuit is coupled to and configured to control operation of the converter in the forward mode or the reverse mode.

The invention discloses an indirect coupling simulation method of a microfluidic dielectrophoresis sorting chip, and relates to the technical field of dielectrophoresis. The method comprises the following steps: establishing a phase field model in a multiphase flow; adopting a finite element method to obtain dielectrophoretic force which changes along with time and space and is borne by particles;inputting the dielectrophoresis force as an external force item into the phase field model in the multiphase flow, and solving the phase field model in the multiphase flow to realize indirect coupling; adopting a lattice Boltzmann method to calculate the phase field model in the multiphase flow, calculating electric field intensity distribution in a chip and track and characterize motion trails of the particles. The advantages of the finite element grid method for solving the electric field can be exerted, the advantages of the lattice Boltzmann method for solving micro-scale flow and flexible cell deformation can also be exerted, the chip structure can be optimized according to the simulation result, and a new thought is provided for design and manufacturing of the microfluidic dielectrophoresis chip.

The invention discloses a power converter and an inductance structure, the power converter comprises an inductance structure, and the inductance structure comprises a first inductance coil, a second inductance coil, a third inductance coil, a fourth inductance coil and an Nth inductance coil and a coupling coil. Each path of inductance coil and the corresponding transistor form a power level circuit so as to generate an output signal at the output end of the power level circuit; and the coupling coil and each path of inductance coil form a negative coupling relationship. Negative coupling among the multiple inductors is achieved in an indirect coupling mode, transient response of large current application is solved, and current sharing among the multiple inductors is achieved.