674 results about "Dual mode" patented technology

The invention relates to the technical field of hybrid inverters, and discloses a hybrid inverter supporting reactive compensation and a control method thereof, and the hybrid inverter comprises a DC input unit, a three-phase full-bridge inversion unit, a grid-connected switching unit, a signal acquisition unit and a digital control unit. The direct current input unit comprises a photovoltaic interface, a battery interface and a direct current bus and is used for converging photovoltaic and energy storage electric energy; the three-phase full-bridge inversion unit is composed of a power device and an LCL filter and converts direct current into alternating current. The grid-connected switching unit comprises a static switch and an isolation transformer and is used for controlling power grid connection; the signal acquisition unit detects voltage and current signals; and the digital control unit judges a grid-connected mode or an off-grid mode according to the signal, calculates a reactive current reference value and generates a PWM (Pulse Width Modulation) control signal so as to realize reactive compensation control in the grid-connected mode and the off-grid mode. According to the invention, reactive power compensation capability is provided in both grid-connected and off-grid operation modes, and stable operation of the inverter in various working conditions is ensured.

An autonomous vehicle control system and method may utilize a dual mode map including sparse map data for some portions of an environment that lacks some of the data maintained in dense map data for other portions of the environment. Sparse map data may be used, for instance, to address a recently-established construction area on a roadway that is incompatible with dense map data that was previously used to operate on the roadway, enabling operation of an autonomous vehicle in the construction area to proceed even in the absence of dense map data for the construction area, e.g., by dynamically augmenting the sparse map data to incorporate additional data sensed by a perception system of the autonomous vehicle.

An antenna includes multiple pillbox antenna structures arranged in a circle to cover the horizon. Each pillbox antenna structures includes a reflector configured to widen the resulting beam so that neighboring pillbox antenna structures produce beams that interact to more fully cover the horizon. A feed layer may include transmit / receive modules that are configured to apply amplitude and phase modulations to input signals for each pillbox antenna structure. Amplitude and phase modulations enable constructive and destructive interference between neighboring pillbox antenna structures to enhance the resulting beam or create nulls to exclude interfering signals. Sets of pillbox antenna structures may be stacked and angularly offset to correct crossover sectors. Alternatively, or in addition, sets of pillbox antenna structures may be adapted to operate in different, distinct frequency bands.

The dual inverter system includes a first inverter connected to one end of a stator coil of the motor and a second inverter connected to the other end. The controller can execute a dual mode in which the motor is driven by two inverters and a single mode in which the motor is driven by only one inverter. The controller closes the upper SW elements of all of the first and second inverters, opens all the lower SW elements, and closes the connection switch when the voltage at the DC end of the first inverter exceeds the threshold voltage. Alternatively, the controllers close all the lower SW elements of the first and second inverters to open all the upper SW elements and close the connection switches.

An MIPI serializer / deserializer supporting photoelectric dual modes and an MIPI transmission system comprise a high-speed processing circuit, a low-speed processing circuit, forward and reverse packaging circuits, forward and reverse unpackaging circuits and a photoelectric configuration module which respectively comprise a sending unit and a receiving unit, and the sending unit and the receiving unit comprise an electrical path and / or an optical path. High-speed signals and low-speed signals in an MIPI mode are supported to be serially or deserialized together, the data transmission interface comprises an electric channel and an optical channel, data can be independently supported to be transmitted at the same time through any one or two of the electric channel and the optical channel, and therefore long-distance scenes and short-distance scenes can be supported at the same time.

A communication system is disclosed in which a number of procedures may be performed between user equipment, a base station, and / or the core network in the context of network slicing. The procedures support, for example efficient configuration of paging areas, roaming, access restriction, mobility, setting up of dual mode connectivity, connection re-establishment, efficient paging and slice selection.

A compound or molecular complex. The compound or molecular complex comprises: a metal chelator configured for chelation with a radioactive isotope or a non-radioactive isotope; and a trifluoroborate (BF3)-containing moiety configured for 19F / 18F exchange or a precursor thereof; and optionally a cell-targeting domain.

The invention discloses a slope type caterpillar track gravity energy storage multi-machine system, and relates to the technical field of gravity energy storage. Comprising a main system unit, a supporting track laid according to a mountain structure, a chain type mass block dragging device arranged on the supporting track, double-motor assemblies arranged at the two ends of the supporting track, and a control system used for controlling the main system unit to operate in a power mode and a phase modulation mode. By designing a dual-mode operation system of a power mode and a phase modulation mode, dual functions of energy storage and discharge and reactive power regulation are realized, and by arranging an auxiliary motor and a kinetic energy recovery device and combining a staggered arrangement scheme of a heavy-load track and a light-load track, efficient recovery and cyclic utilization of energy in the movement process of the mass block are realized, and the energy utilization rate of the mass block is improved. By establishing a mathematical relationship model of track arrangement and adopting a design scheme of performing dynamic optimization according to mountain characteristics, the operation safety is ensured through an automatic mass block carrying and stacking system.

Systems, method, and computer readable medium are provided for a controller for a generator. The system includes a rectifier for converting a first AC signal generated by the generator to a first DC signal; a first DC-DC associated with energy storage and a first mode; a second DC-DC associated with an inverter and a second mode; a switch for alternately toggling between the first DC-DC and the second DC-DC, wherein the first mode prevents output to the electrical grid, and the second mode enables inversion of the second DC signal to a second AC signal via the inverter; and a processor that uses the indicator to operate the switch to operate the generator in the first mode when a connection to the grid does not conform with a parameter, and operate the generator in the second mode when the connection to the grid conforms with the parameter.

The invention discloses flexible interconnection equipment with tracking-networking dual modes and a control method thereof, and belongs to the technical field of high-quality power supply. The equipment comprises an AC / DC bidirectional converter, a DC / DC bidirectional converter, a first transformer area, a second transformer area, a first power grid, a second power grid and an energy storage device. The direct current side of the first AC / DC bidirectional converter is connected with the direct current side of the second AC / DC bidirectional converter to form a back-to-back structure, and the output end of the first transformer area and the output end of the second transformer area are connected with the alternating current end of the first AC / DC bidirectional converter and the alternating current end of the second AC / DC bidirectional converter respectively. One side of the DC / DC bidirectional converter is connected with the DC side of the first AC / DC bidirectional converter and the DC side of the second AC / DC bidirectional converter, and the other side of the DC / DC bidirectional converter is connected with the energy storage device; according to the method, flexible self-adaptive switching between the network following control mode and the network construction control mode can be realized according to the strong and weak conditions of the transformer area power grid, the adaptability under the weak power grid condition is enhanced, and high-quality power supply of the load and efficient and stable operation of the transformer area are ensured.

A dual mode surface acoustic wave (SAW) filter includes a piezoelectric substrate, a pair of reflectors disposed on the piezoelectric substrate, and N input and output interdigital transducers (IDTs) disposed on the piezoelectric substrate and between the pair of reflectors and alternately arranged in a lateral direction. Each IDT includes a pair of comb electrodes with a plurality of electrode fingers, adjacent electrode fingers pointing in opposite directions. The total number of electrode fingers in each IDT is an odd number greater than or equal to 3. The invention also discloses a receiving filter and a duplexer.

The invention provides an NFC dual-mode-based service execution method and NFC equipment, the method is applied to the NFC equipment, the NFC equipment is dual-mode equipment of a card reader mode and a card simulation mode, the NFC equipment at least comprises a card reading equipment detection module, and in the card reader mode, in response to the fact that the card reading equipment detection module recognizes that the card reading equipment is close, the NFC equipment detects that the card reading equipment is close. And when the card reading equipment sends a detection signal, stopping broadcasting the signal to the outside, after the card reading equipment sends the detection signal, sending an activation signal to the card reading equipment, switching to a card simulation mode, receiving a standard reading signal sent by the card reading equipment, determining pre-stored label data, and returning the pre-stored label data to the card reading equipment.

The invention relates to the field of battery management, and discloses a battery management system (BMS) control method for battery prediction, which comprises the following steps of: analyzing the difference condition of single batteries; constructing a conventional hybrid balanced switching strategy; constructing a differential hybrid balanced switching strategy; forming different equalization adjustment strategies by the conventional hybrid equalization switching strategy and the difference hybrid equalization switching strategy; determining an executed balance adjustment strategy according to the difference condition of the single batteries; active equalization and passive equalization are carried out separately in a hardware isolation mode and a logic interlocking mode; and constructing a battery state prediction model, and predicting the battery state according to the battery state prediction model. According to the method, the battery equalization adaptability is optimized, the dual goals of improving the equalization effect and reducing the equalization loss are achieved at the same time, the battery state prediction process is doubly optimized through the equalization reference parameters and the conventional operation data, the influence of the equalization process is considered by the battery state prediction model, and the battery state prediction is more accurate.

The invention relates to the technical field of surveying and mapping equipment, and discloses a surveying and mapping instrument with soft and hard ground switching dual-mode supporting legs, the surveying and mapping instrument comprises a debugging platform and a surveying and mapping instrument body, and a multi-stage horizontal adjusting assembly for rapidly adjusting and leveling the surveying and mapping instrument body is arranged between the debugging platform and the surveying and mapping instrument body. The bottom of the debugging platform is provided with at least three sets of supporting leg assemblies, and the bottoms of the supporting leg assemblies are detachably provided with switching discs through separation assemblies. The first soft ground supporting assembly and the second soft ground supporting assembly are adopted to be used according to different soft ground conditions, short-term effective supporting of the tripod is achieved, rapid installation of the switching disc and positioning of the hard ground supporting assembly, the first soft ground supporting assembly and the second soft ground supporting assembly are achieved through the separation assembly, and therefore the switching disc can be conveniently and rapidly installed. And for different use environments, adjustment is carried out when the switching disc is installed, and the operation is simple and convenient.

The invention discloses an under-drive-all-drive dual-mode robot multi-fingered dexterous hand, and belongs to the technical field of robots. The dexterous hand comprises a palm and a plurality of fingers; each finger is provided with a tendon rope transmission system, a second driving assembly, a third driving assembly, a fourth driving assembly and a fifth driving assembly; each finger comprises a base, a base joint, a near-end knuckle, a middle knuckle and a far-end knuckle which are connected in sequence; the base is fixed on a palm; a two-degree-of-freedom finger base joint and a face gear-based mode switching mechanism are designed, so that the dexterous hand can be allowed to work in a full-drive mode or an under-drive mode, and the control complexity of dual-mode coupling is reduced through a mechanical structure. The double modes of the rigid dexterous hand are proposed and realized for the first time, the humanoid dexterous property of the dexterous hand is ensured, the highly integrated design of the dexterous hand is realized, and the universality of the dexterous hand is enhanced.

The invention provides a stress detection system and method based on active and passive dual modes, and relates to the technical field of stress detection, and the system comprises a stress sensor and a data processing module which are in communication connection. The stress sensor comprises a first coil assembly, a second coil assembly and a three-axis magneto-dependent sensor. The first coil assembly is configured to apply a square wave current to the first coil assembly through the excitation source to generate an ACSM effect; the data processing module is configured to collect a voltage signal and a phase signal of the second coil assembly under the ACSM effect; collecting a magnetic field signal of the three-axis magneto-dependent sensor; performing feature extraction on the voltage signal, the phase signal and the magnetic field signal to obtain feature data; and inputting the characteristic data into the joint characteristic decoupling mathematical model, and determining the pipeline stress value of the to-be-detected pipeline, so as to solve the problems that an existing stress sensor is large in error during detection in a low-stress area, and the accuracy of a detection result is low due to interference of an environmental magnetic field.

A fissure with controlled geometry is formed in hot dry rock by iterative application of increasing mechanical and hydraulic stresses in which the mechanical stress is applied by a contact device with typically opposing contact elements to incrementally open a mouth portion of the fissure while the hydraulic stress is used to then expand the fissure. However, it is also contemplated that the contact device may also be used for expansion and / or propagation of existing fissures that are naturally occurring or initiated by hydraulic fracturing. Fissures created with the devices and methods presented herein will avoid thermal bottlenecks in thermally conductive materials placed within such fissures. Moreover, the wide mouth portion of such fissures will help ensure continuous heat transfer from the thermally conductive materials placed within such fissures to a thermally conductive materials placed within a wellbore from which the fissures originate.

A muffler assembly for a vehicle exhaust system including a muffler that has a primary muffler conduit with a primary resonator, a secondary muffler conduit with a secondary resonator, and a valve that directs exhaust flow through both the primary and secondary muffler conduits or primarily through the secondary muffler conduit depending on the position of the valve. The muffler provides a first level of sound attenuation when the valve is in an open position and a second level of sound attenuation when the valve is in a closed position. The second level of sound attenuation is greater than the first level of sound attenuation and therefore the muffler provides a louder exhaust sound when the valve is in the open position and a quieter exhaust sound when the valve is in the closed position.

The present disclosure discloses a MBBR enhanced AOA and AAO dual mode operation method based on circulating flow, which relates to the field of water treatment technology. When the influent C / N of the sewage to be treated is ≥ 5 or C / N is < 2, the system adopts AAO operation mode. The operation method is as follows: the sewage to be treated and returned sludge enter the first anaerobic zone - fourth anaerobic zone - third anaerobic zone - second anaerobic zone - first anoxic zone - first aerobic zone - second anoxic zone - third anoxic zone - second aerobic zone through the inlet channel. When 2 ≤ the influent C / N of the sewage to be treated < 5, the system adopts AOA operation mode, the sewage to be treated and returned sludge together enter the second anaerobic zone - third anaerobic zone - fourth anaerobic zone - first anaerobic zone - first aerobic zone - first anoxic zone - second anoxic zone - third anoxic zone - second aerobic zone. The present disclosure can achieve two operating modes under the same system pool arrangement, and can achieve stable, efficient, and economical denitrification.

The invention provides a hydraulic closed-loop tilling depth control system based on multi-sensor fusion in order to solve the problems that traditional tilling depth control is low in precision, poor in stability and the like. The system collects data through an inclination angle sensor, a displacement sensor, a posture sensor and the like, and after fusion processing, a hydraulic cylinder drives a parallel four-bar mechanism to adjust the tilling depth of the subsoiler. The system has three innovations: firstly, a dynamic model is constructed by using multi-source sensor cooperation and sliding mode variable structure control, the anti-interference capability is improved by combining a control strategy, and accurate tilling depth control is dynamically realized according to soil conditions; 2, a parallel four-bar mechanism is mechanically designed to be combined with hydraulic drive, terrain interference is eliminated by utilizing mechanism characteristics, and the control precision and unbalance loading resistance are enhanced; and thirdly, a bidirectional hydraulic lock and a manual-electric dual-mode oil way are adopted for hydraulic pressure, so that reliable tilling depth control and continuous operation are guaranteed. The three innovations are fused, and a high-precision, strong-stability and ultra-reliable tilling depth control solution is provided for saline-alkali soil agriculture.

The invention discloses a bridge underwater safety detection method based on opto-acoustic dual modes, and relates to the technical field of underwater engineering detection, and the method comprises the following steps: obtaining water area particle size distribution and concentration data by using a multi-frequency acoustic suspended sediment concentration profiler, establishing an environmental parameter database, configuring a shipborne detection device according to the initial environmental parameter database, and detecting the underwater safety of a bridge according to the shipborne detection device. The method comprises the following steps: setting a three-axis stabilized platform carrying a polarization imaging camera and a multispectral LED array, deploying a multi-beam detection module and ADCP equipment, and establishing a unified coordinate system; multi-angle original intensity images are collected through a polarized optical imaging module, and multi-exposure fusion is carried out after processing is carried out through a mutual information minimization algorithm. An optical image and an acoustic point cloud are deeply fused by adopting a graph neural network, the detection precision is improved through dynamic weight optimization of an attention mechanism and a space-time registration algorithm, a multi-index fusion model is constructed based on fuzzy logic and a D-S evidence theory for adaptive early warning decision, upgrading from single-parameter alarm to multi-dimensional decision is realized, and the false alarm rate is reduced.

The invention discloses an anti-reverse-connection and power-adjustable showing stand integrated power taking device and a control method, and relates to the related field of showing stands, the anti-reverse-connection and power-adjustable showing stand integrated power taking device comprises a layer plate assembly, a lamp tube assembly, a power taking assembly, a showing stand assembly, a driving rod assembly and a plug assembly, the lower end of the layer plate assembly is rotationally connected with the lamp tube assembly, and the rear end of the layer plate assembly is fixedly connected with the power taking assembly; the rear end of the laminate assembly is in sliding connection with the showing stand assembly, stepless adjustment of the brightness of a lamp tube is achieved through the PWM technology, and diversified showing requirements are met; a driving assembly is innovatively combined with intelligent heat dissipation, so that stable operation of equipment is ensured; a unique pneumatic emergency power-off mechanism provides physical-level safety protection, response is rapid and reliable, the functions of manual and electric dual-mode operation, remote intelligent control, emergency lighting and the like are integrated, the industrial pain points that a traditional showing stand is tedious in installation and inconvenient to adjust, has potential safety hazards and the like are solved, and perfect unification of safety, flexibility and intelligence is achieved.

The invention relates to a dual-mode storage-calculation-encryption integrated circuit and an operation method thereof, in particular to an integrated circuit with both a PUF (Physical Unclonable Function) mode and an eCIM (Enhanced Common Information Model) mode. The dual-mode signal processor, the vector coding circuit, the word line driving circuit, the bit line driving circuit, the external signal decoding circuit, the selector circuit, the comparator circuit, the analog-to-digital converter and the shift adder circuit are arranged on the periphery; according to the PUF mode, the coupling complexity of the PUF in the spatial dimension is improved through complementary word lines, nonlinear XOR operation is achieved in each basic unit through a pairing method of two state complementary transistors, Hamming distance comparison between two columns is introduced, and the machine learning modeling attack resisting safety of the PUF is improved; according to the eCIM mode, an encrypted data weight matrix stored in a transistor is protected through XOR encryption, high-energy-efficiency and high-parallelism in-memory calculation operation is achieved through a nonvolatile transistor array, and high-parallelism in-situ decryption in-memory calculation is completed through complementary word lines.

The invention belongs to the technical field of navigation, and discloses an inertial navigation method and system based on dual modes and a medium, the dual modes comprise a first navigation mode and a second navigation mode, the first navigation mode adopts a first combined navigation mode formed by combining an inertial unit with an ultra-short baseline acoustic positioning unit and a Doppler velocity measurement unit, and the second navigation mode adopts a second combined navigation mode formed by combining an ultra-short baseline acoustic positioning unit and a Doppler velocity measurement unit. The navigation mode II adopts a second combined navigation mode of combining an inertial unit and a geomagnetic measurement unit. The method comprises the following steps: acquiring the depth of the submersible at the current position; and updating the current position of the submersible in real time by adopting the navigation mode I and / or the navigation mode II according to the depth of the submersible at the current position. The method has high positioning accuracy.

Embodiments of a language learning system and method for implementing or assisting in self-study for improving listening fluency in a target language are disclosed. Such embodiments may simultaneously present the same piece of content in an auditory presentation and a corresponding visual presentation of a transcript of the auditory presentation, where the two presentations are adapted to work in tandem to increase the effectiveness of language learning for users.

The application discloses and realizes a dual-mode multi-load loop arc fault detection system, and aims at the problems of insufficient precision of existing real-time arc fault detection devices and high-load continuous operation of equipment, etc., divides the fault arc into two kinds of starting arc and process arc, and uses different modes of detection methods according to different conditions of starting fault and process fault, adopts a characteristic value partition detection method in the process mode, and makes the method tend to be simple under the condition of ensuring accuracy and real-time performance. The method takes an stm32H7 as a core microprocessor, is matched with a conditioning circuit, a power supply circuit, a data acquisition circuit and a wireless communication circuit to form a dual-mode fault diagnosis system. The application has the characteristics of high monitoring precision and high speed, and has strong popularization value and use value.

The invention provides a conventional and detonation dual-mode spontaneous combustion propellant space engine, and belongs to the technical field of spacecraft propulsion systems. The conventional and detonation dual-mode spontaneous combustion propellant space engine comprises a propellant control valve, an engine head, an engine body and an external excitation device. The propellant control valve, the engine head part and the engine body part are connected in sequence, and the external excitation device is embedded into the outer wall of the engine body part; according to the invention, by adopting an external excitation mode, the space engine in a detonation mode is realized; by means of a selective excitation mode, the space engine capable of selecting a conventional mode and a detonation mode is achieved. The detonation combustion is applied to the spontaneous combustion propellant space engine, the upper limit of the combustion efficiency of the space engine of a constant-pressure thermodynamic cycle is broken through, and the combustion efficiency is further improved on the original basis.

This disclosure describes many innovations including but not limited to systems, methods, and non-transitory computer readable media for controlling an energy generator. A system for controlling an energy generator includes a detector for sensing an indicator of electrical energy generated by the generator; an energy storage component configured, in a first mode of operation, to store energy generated during operation at a sub-threshold level insufficient for real-time supply to an electrical energy sink; an energy converter configured, in a second mode of operation, to provide energy generated during operation above the threshold level for real-time supply of energy to the electrical energy sink; and a controllable switch, electrically associated with the detector, and configured to alternately toggle between the first mode of operation and the second mode of operation based on the indicator to thereby permit energy generated at the sub-threshold level to be collected and intermittently used.

The invention provides an offshore wind power floating type floating body with a self-locking assembly structure, and relates to the technical field of offshore wind turbine foundations, the offshore wind power floating type floating body comprises an assembly module, and the assembly module comprises a floating plate and a mounting platform arranged at the top of the floating plate; the floating part is arranged between the floating plate and the mounting platform; the stabilizing component is arranged in the center of the floating plate; the connecting parts are symmetrically arranged on the peripheral side edges of the bottom surface of the floating plate and comprise a first connecting piece and a second connecting piece which are symmetrically arranged on the two sides of the side edges of the bottom surface of the floating plate and are mutually inserted and matched; through the standardized design of the modularized floating plates and the detachable connecting parts, and by combining the port pre-assembly mode and the water body self-assembly mode, the technical bottlenecks that the land transportation of a traditional floating body exceeds the limit, and the offshore installation efficiency is low are solved; a double-self-locking mechanism driven by water pressure of the floating block and triggered by gravity of the heavy block cooperates with the anchoring block to inhibit horizontal displacement, and the balancing weight excites a dynamic balance system of a pendulum effect, so that the key problem that the anti-overturning stability of the floating body is insufficient in a deep sea area stormy wave environment is solved.

The invention relates to a multi-sensor fusion and dual-mode control unmanned aerial vehicle parachute ejection system and method, and belongs to the technical field of unmanned aerial vehicle safety. Comprising a sensor module used for collecting acceleration, angular velocity and barometric altitude data of the unmanned aerial vehicle in real time; the control module is used for performing fusion processing on the data acquired by the sensor module based on an extended Kalman filtering algorithm so as to determine the state of the unmanned aerial vehicle, and outputting a parachute opening instruction based on parachute opening decision logic; the parachute opening decision logic comprises air crash detection, manual parachute opening instruction response and normal landing detection; and the execution module responds to the parachute opening instruction and controls the ignition head to trigger the ejection parachute to be opened. The problem that the safety application of the unmanned aerial vehicle is restricted due to insufficient reliability, poor complex environment adaptability and lack of full-flight-cycle safety protection in the prior art is solved.