507 results about "Switch matrix" patented technology

The invention relates to a system and a method for testing the conductivity of an engine wire harness, and relates to the field of intelligent detection, a programmable switch matrix is formed by acquiring a wire harness layout diagram and arranging matrix relays, and after logic self-inspection is executed, an optimal conduction path is searched based on a hierarchical partition model and a DFS algorithm; according to the method, the path image sets of the partitions are overlapped and mapped to identify abnormal wire harness sections, and finally, abnormity is determined through analog signal injection and waveform analysis and physical repair guidance is performed, so that the technical problems of low test efficiency, poor flexibility and difficulty in adapting to complex variable wire harness layout conductivity test are solved, and the purposes of improving the test flexibility and efficiency and reducing the test cost are achieved. And a fault point can be accurately positioned.

The invention relates to the technical field of ink-jet printing, and discloses a nozzle driving method, system and device and a storage medium, and the method comprises the steps: generating a digital waveform signal based on a printing demand, and converting the digital waveform signal into an analog voltage waveform through a digital-to-analog conversion module; performing waveform configuration on the analog voltage waveform through an analog switch matrix to generate a target analog waveform; controlling a high-voltage amplification circuit to boost and amplify the target analog waveform to output an initial driving level; driving a nozzle to jet ink droplets based on the initial driving level, and collecting ink droplet state parameters by using an ink droplet monitoring module; comparing the ink droplet state parameters with a preset target value to obtain a comparison result, and generating an adjustment parameter set according to the comparison result; optimizing the initial driving level generation process based on the adjustment parameter set to obtain an optimized driving level; according to the invention, through a closed-loop control process, the problem of poor driving signal adaptability caused by existing open-loop control is effectively solved.

The invention discloses a bus network configuration reconfiguration device and method, a main control unit, equipment and a medium. The bus network configuration reconfiguration device comprises an upper computer and reconfiguration equipment corresponding to M node equipment and P communication networks, the reconstruction device comprises a main control unit and a bus switching matrix. The bus switching matrix comprises a node switching matrix and a network switching matrix; the node switching matrix is respectively connected with the network switching matrix and the P communication networks; the network switching matrix is also connected with the M node devices; and the main control unit controls the node switching matrix and / or the network switching matrix to realize switching of the node equipment accessed to the communication network and / or the communication network accessed by the node equipment based on the configuration information sent by the upper computer. According to the embodiment of the invention, the method can achieve the automatic reconstruction of the high-speed bus network configuration, achieves the switching of the node equipment and the communication network through the node switching matrix and the network switching matrix, enables each signal path to have no branch wiring, and improves the signal transmission quality.

The invention discloses a laser wireless energy transfer dynamic MPPT control method based on an RL-PSO hybrid algorithm and a reconfigurable array system, and aims to solve the problems of power oscillation and mismatch loss caused by light spot offset of a photovoltaic array under laser dynamic irradiation. According to the method, reinforcement learning (RL) and particle swarm optimization (PSO) are fused, dynamic parameters such as the light spot moving speed and irradiance are sensed in real time through the RL, the inertia weight and learning factors of the PSO are adjusted in a self-adaptive mode, and collaborative optimization of global search and local tracking is achieved. According to the system level, a reconfigurable photovoltaic array is designed, and according to data of a light spot position sensor, battery series-parallel topology is dynamically adjusted through a switch matrix, and current matching is optimized. According to the method, double-loop control is adopted, wherein an outer-layer RL decision module dynamically switches PSO working modes according to the environment, and an inner-layer PSO module optimizes the working voltage. The system efficiency in a dynamic scene can be improved by 15%-30%, mismatch loss is reduced by 40% or above, and the method is suitable for unsteady-state energy supply scenes such as unmanned aerial vehicles and mobile robots.

A reconfigurable, for example with time, network switch matrix coupling switch charge circuits representing multiply and add circuits (MACs) and neurons (MACs with activations) capable of accepting and outputting proportional to charge pulses through crossbars within said network, said crossbars controlled by local controllers and higher level controllers to setup said crossbar communications.

The invention provides a lightweight deployment method and system of a large model on edge computing equipment. According to the method, the acceleration capability portrait is constructed by extracting the hardware instruction set architecture type of the target edge device and the number of parallel computing units. Based on the instruction type, the large model weight is grouped, divided and pre-calculated through a unified lookup table vectorization engine, and a pre-calculation vector matched with the target instruction set is generated; and according to the number of the parallel units and the instruction-level parallel capability, compiling the pre-calculation vector to generate an adaptive parallel table look-up instruction block, distributing execution threads with the same number as the parallel units, and eliminating data dependence conflicts. And finally, loading the instruction block to a shared memory area, configuring topological logic of the photoconductive switch matrix based on an instruction type, and dynamically switching a data transmission path in a hardware instruction period. According to the method, the efficient deployment of the large model in the edge equipment and the low-delay reasoning in the resource-constrained environment are realized.

The invention discloses a dynamic self-adaptive precision switching method for a voice recognition NPU, and aims to solve the core problems that precision and energy efficiency of an end-side voice recognition NPU in multiple scenes cannot be considered at the same time, fixed-precision hardware resources are seriously wasted, software switching efficiency is low, and errors are accumulated. A hardware architecture of a 4 * 4 reconfigurable MAC subunit array and a switch matrix is constructed, and a task-driven adaptive scheduling mechanism, an operation period synchronous control technology (single-period hardware reconfiguration is realized by utilizing idle gap latch configuration) and a direction-sensitive error compensation algorithm (historical data interpolation extension or correction truncation) are combined; hardware-level dynamic lossless switching of the MAC unit between 8bit / 16bit / 32bit precision is realized, so that different voice tasks achieve the highest necessary computing power with the lowest necessary power consumption, no data is lost in the switching process, and finally, the energy efficiency rigidity of a fixed-precision framework is oppositely converted into the precision on-demand supply capability capable of being deployed in an engineering manner.

The invention relates to the field of computer hardware architecture, in particular to a parallel processor dynamic resource allocation method, system and device and a storage medium, and the method comprises the steps: monitoring inter-node communication indexes and in-node parallel processor index data in real time; calculating an optimal connection path through an optimization algorithm which comprehensively considers the communication cost between nodes and the load balancing condition of a parallel processor; dynamically adjusting the configuration of a switch matrix according to the optimal connection path so as to switch the connection topology between the nodes; inputting the monitoring data of the continuous time window into the trained LSTM prediction model, and predicting a load prediction value in a future set time period; and according to the task priority, the resource state of the parallel processor and the load prediction value, dynamically adjusting the resource allocation of the parallel processor, and generating a resource allocation table. The communication cost between the nodes is reduced, the performance bottleneck caused by unsmooth communication is avoided, the load balancing of the parallel processor is realized, and the resource utilization rate is improved.

The invention provides a direct-current charging pile bridging power distribution system, and belongs to the technical field of direct-current charging piles. The direct-current charging pile bridging power distribution system is characterized in that three-phase voltage and dual-port current data of a power grid are acquired firstly, and an initial virtual impedance matrix is established; secondly, dividing load requirements into three modes, correcting initial virtual impedance by adopting a floating weight index and an impedance optimization mechanism equation, and outputting optimized virtual impedance parameters; then, a current shunting path is established through bridge switch matrix conduction time sequence control, then the dual-port current balance degree is calculated in real time, a current balance contribution degree evaluation system is constructed, and a duty ratio distribution scheme is optimized; then establishing a current distribution bridge matrix, and dynamically updating matrix parameters to realize accurate power control; optimizing the switching frequency and the dead time by adopting an efficiency improvement algorithm; and finally, outputting the optimized parameters to a bridge switch matrix, generating a new PWM driving signal, and realizing dynamic balance distribution of power of double output ports.

Systems and Methods for capacitance testing of a unit under test with parasitic capacitance directed to a guard rail. The system includes test points, wherein the plurality of test points are divided into at least two groups; a stimulus source; a first group guard relay electrically connected to each of the test points in a first; a second group guard relay electrically connected to each of the test points in a second; a guard rail coupled to the first group guard relay and the second group guard relay; a first group return relay electrically connected to each of the test points in a first group; a second group return relay electrically connected to each of the test points in a second group; a current measurement rail coupled to the first group return relay and the second group return relay; a current meter coupled to the measurement rail; and a controller.

The invention discloses a multi-frequency-point multi-polarization parallel sampling phased-array antenna automatic calibration platform, and relates to the technical field of antennas, and the platform comprises a control center which is used for parameter modeling and test task configuration, parallel sampling strategy generation, and data storage and tracing; the FPGA hardware controller is used for generating synchronous trigger pulses and synchronously triggering the radio frequency switch matrix, the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array; the radio frequency switch matrix is used for quickly switching multi-frequency-point multi-polarization signals; the multi-path signal source, the six-axis mechanical arm, the multi-probe array module, the double-axis rotary table and the vector network analyzer VNA array are used for synchronously collecting test data; the data processing module is used for receiving the sampling data, calculating a test index and carrying out closed-loop compensation and result verification; the test efficiency, the equipment utilization rate and the measurement precision are remarkably improved, and full-process automatic calibration and multi-dimensional data tracing are achieved.

A towing vehicle and the trailer include respective batteries and electric powertrain for propulsion. A connector system connects the vehicle and trailer via a plurality of conductors, a plug, and a socket including at least seven connector pins. Due to the wire gauge, each conductor carries no more than 20 amps. When a driving state is detected, a first switch matrix in the vehicle and a second switch matrix in the trailer enter a first configuration to connect a plurality of light sources in the trailer to a lighting signal generator in the vehicle. When a charging state is detected, a second configuration of the switch matrices is entered in order to carry a charging current which is divided in parallel among a plurality of conductors in the connector system and then recombined in order to provide a charging current greater than 20 amps.

A component die validation built-in self-test (VBIST) engine is presented. In an aspect, a component die includes component circuitry for performing a component function, interface circuitry for communicating with another die, and a VBIST circuit. The VBIST circuit includes a traffic generator that generates test data streams, a tracker that receives and validates test data streams, and a configurable switching matrix for coupling the traffic generator to at least one of the component circuitry, the interface circuitry, or the tracker, and for coupling at least one of the component circuitry, the interface circuitry, or the traffic generator to the tracker. The VBIST circuit can send traffic to and from the component circuitry directly, or indirectly via the interface circuitry in loopback mode, and can be used for memory initialization and test.

The invention introduces a Doppler radio direction finding system, which relates to the technical field of radio navigation and comprises an antenna array unit, a radio frequency switch matrix, a logic controller, a single-channel receiver and a signal processing unit. The logic controller drives the radio frequency switch matrix to alternately execute clockwise and anticlockwise antenna scanning actions in a single measurement period, and the signal processing unit respectively extracts phase slopes corresponding to forward and reverse scanning, generates an environment error component according to the sum of the two phase slopes and identifies a specific antenna oscillator at a standing wave node. The logic controller responds to the feedback instruction and physically skips the conduction operation on the specific antenna oscillator in the subsequent time sequence, the physical symmetry of positive and negative scanning and an environment feedback mechanism are utilized, environment standing wave interference is actively avoided on the premise that radio frequency channels are not increased, and qualitative change improvement of anti-multipath direction finding precision under a single-channel system is achieved.

The invention provides a real-time online self-calibration method and system for a charge and discharge test channel, and relates to the technical field of automatic calibration. According to the method, key parameters of each test channel are continuously monitored through an upper computer, and once the control precision of a certain channel exceeds a preset threshold due to deviation, a system automatically identifies the channel as a to-be-calibrated channel. And then, the system intelligently matches and allocates an available target independent calibration channel according to the channel information and the real-time operation state of each calibration channel in the calibration module. Through automatic operation of the switch matrix, a to-be-calibrated channel is disconnected from a test object and connected with a target calibration channel, the target calibration channel is controlled to carry out multi-point calibration on the to-be-calibrated channel, data are collected to generate a calibration curve, a new calibration coefficient is calculated according to the calibration curve, the coefficient is written into the to-be-calibrated channel, and after calibration is completed, the to-be-calibrated channel is calibrated. And the channel automatically recovers the original test process. On-line and closed-loop full-automatic calibration is realized in the whole process, and continuity and accuracy of test data are ensured.

The invention relates to the technical field of integrating instruments, in particular to a multi-interface heat flow integrating instrument, which comprises a multi-system input interface unit, and is characterized in that pulse signals, 4-20mA current signals and differential voltage signals are accessed through a phoenix terminal array; the input end of the heterogeneous switch matrix is electrically connected with the output end of the multi-system input interface unit, and the heterogeneous switch matrix is used for matching signal types and frequency bands of output signals of different types of sensors; and the input end of the optomagnetic double-coupling driving module is connected with the control port of the heterogeneous switch matrix, so that the signal integrity and the system safety are improved. Compared with the prior art, by arranging the multi-system input interface unit, the standby power consumption is greatly reduced, the system response speed is improved, the structure has the characteristics of high adaptability, high compatibility and low power consumption, and a high-reliability and intelligent access platform is provided for parallel deployment of various heat flow sensors.

The invention provides a parallel main cabinet type direct current charging pile system, which comprises a main control unit, at least one power distribution matrix unit, at least one main cabinet and a plurality of charging terminals, and is characterized in that each main cabinet is internally provided with a plurality of pluggable power supply modules, and each charging terminal is provided with at least one charging gun; the switching control logic of the power distribution matrix unit supports any power scheduling across a main cabinet, across a charging terminal and across a charging gun; each power distribution matrix unit is constructed as an M * N full-connection switch matrix, and the power distribution matrix unit dynamically switches the output power of any one power supply module to any one charging gun. The main control unit dynamically dispatches the output ports of the SCU to be connected in parallel according to the number of the charging gun, automatic superposition of power of multiple main cabinets is achieved, the megawatt charging requirements of electric heavy trucks, buses and the like are met, any power module is supported to be correspondingly connected with the charging gun of any number, and the physical boundary among the main cabinets, the charging terminals and the charging gun is broken.

The invention discloses a high-efficiency single-stage bidirectional power conversion topological structure capable of realizing full-range soft switching and a control method of the high-efficiency single-stage bidirectional power conversion topological structure. In a single-stage bidirectional power conversion topology formed by double half bridges and a switch matrix, a controlled current source connected in parallel with a primary side of a second transformer is designed; the current on a bridge arm connected with the primary side of the second transformer can be effectively changed, so that the soft switching range of a switching tube on the bridge arm in a wide power transmission range is widened, and full-range soft switching in a power frequency period can be realized in any load range; the controlled current source is designed to only work before and after the switching moment of the primary side switching tube of the second transformer, the current stress of the switching tube can be effectively reduced, and meanwhile, the loss of the additional controlled current source is very small. According to the invention, the working range of the soft switching is widened, the additional loss caused by the soft switching is greatly reduced, higher efficiency and higher power density can be realized, and the cost advantage is realized.

The application discloses a single-stage bidirectional power conversion topology structure capable of realizing wide-range soft switching and a control method thereof. The bridge-in and bridge-between phase shift control of a double half-bridge circuit and a high-frequency switch matrix provides a basis for realizing soft switching of all power tubes. The soft switching of a wide voltage variation range is realized by real-time adjustment of a switching frequency according to the size of a port voltage. The bridge arm current connected with the primary side of a second transformer is the sum of the primary side current of the second transformer and the inductance current connected with the primary side of the second transformer in parallel. By designing the inductance value of the parallel inductance connected with the primary side of the second transformer, the bridge arm current connected with the primary side of the second transformer can be effectively changed, so that the soft switching realization range of the switching tube of the bridge arm connected with the primary side of the second transformer under the wide power transmission range can be expanded.

The invention discloses an amplitude-adjustable attenuation circuit network for differential signal transmission. The amplitude-adjustable attenuation circuit network is composed of an attenuator I and an attenuator II. Wherein a common-mode feedback circuit is arranged between the attenuator I and the attenuator II. The attenuator I is introduced into an anti-ESD impact module which is composed of an input end back-to-back diode and used for resisting ESD impact. Differential signals at the input end of the attenuator I are subjected to voltage division through fixed resistors RS1 and RS1 < n > and binary weight adjustable resistors RS2 and RS2 < n >, the attenuator II is connected to a transmission channel in parallel, and the differential signals are subjected to further differential mode attenuation through binary weight adjustable capacitors CSp and CSn. The attenuation circuit network dynamically switches attenuation paths through an MOS tube switch matrix, respectively supports attenuation amounts from-1dB to-6dB and from-0.3 dB to-7dB, realizes high stepping precision, finally realizes synchronous attenuation for common-mode and differential-mode voltages, retains differential-mode attenuation of common-mode levels, and optimizes low-frequency amplitude attenuation and high-frequency signal integrity at the same time.

The invention discloses an in-memory encryption circuit, encryption method and system based on a resistive random access memory, and relates to the technical field of semiconductors and in-memory encryption, the in-memory encryption circuit comprises an in-memory calculation chip integrating a true random number generator, a physical unclonable function, a logic calculation function and a storage function, the computing macro unit is used for storing and processing bit data containing an encrypted plaintext and a key; the master control unit is used for uniformly managing control signals of the computing macro-units and ensuring cooperative work of the computing macro-units; the switch matrix is used for realizing external input and output of logic signals and data interaction among the computing macro units; and the input and output module is used for realizing external driving and internal driving of the in-memory computing chip and completing signal and data butt joint between the in-memory computing chip and external equipment. According to the method, deep integration of encryption algorithms can be realized, and the security of in-memory encryption is improved while the area overhead is reduced.

The invention discloses a high and low temperature automatic test method and system for a transmit-receive vector control module, and a medium, and belongs to the technical field of chip test. The method comprises the steps that an upper computer selects a test channel and test items and configures test parameters; the upper computer is connected with the instrument according to the test items and performs different presetting according to the test types; starting an automatic test, sending a matrix switch control instruction by the upper computer, performing switch matrix channel switching and COM port switching, and then executing SIP power-up and pole writing; executing a corresponding test process according to the test type; and after the test is completed, the SIP is powered off, poles are written, test data are stored, then whether all channels of the SIP are tested or not is judged, if not, the next channel is tested, and if all the channels are tested, all the test data are exported. Through the full-automatic testing process, manual intervention is reduced, and the testing efficiency of a production line can be greatly improved. In a high and low temperature test environment, the equipment can carry out continuous multi-channel test.

This application provides a power distribution device, a charging device, an energy storage device, and a charging system. The power distribution device includes at least one power distribution unit, each power distribution unit including at least one power port, multiple load ports, at least one connection port, and a switch matrix. Each power port is used to connect to a power module in the charging device, and each load port is used to connect to a load. The switch matrix is ​​used to disconnect or connect any two of each power port, each load port, and each connection port. At least one power distribution unit of the power distribution device includes a first power distribution unit, and one connection port of the first power distribution unit is used to connect to the power distribution units of other charging devices. This application embodiment can flexibly adjust the output power of the load ports of the power distribution device to meet the charging power requirements of different loads.

The invention provides a bus switching node and a communication network, and relates to the technical field of bus switching. In the bus switching node, the switching matrix is used for being controlled to communicate the corresponding interfaces on the two sides of the bus switching node, so that the bus switching node can realize communication between equipment connected with the two sides of the bus switching node. Each interface of the first end of the switching matrix is connected with the interface of the first end of the bus switching node through the first repeater in a one-to-one correspondence manner, so that signals sent by equipment connected with two sides of the bus switching node can pass through the repeaters. The repeater has signal amplification and signal regeneration functions, so that when the communication distance between the devices connected to the two sides of the bus switching node is relatively long, the communication quality between the devices connected to the two sides of the bus switching node can be ensured; therefore, the bus switching node prolongs the communication distance between the devices connected to the two sides of the bus switching node.

The present invention relates to the field of radio frequency integration technology, specifically a method for designing a broadband transceiver reconfigurable channel architecture, comprising the following steps: step S1: dividing the operating frequency band; step S2: designing a reconfigurable filter to achieve adjustable center frequency and bandwidth; step S3: utilizing a switch matrix to achieve a combination of different functional modules of the system; step S4: achieving high channel isolation design and channel consistency design. The method for designing a broadband transceiver reconfigurable channel architecture provided by the present invention utilizes a reconfigurable filter to replace a traditional filter, which can achieve radio frequency reconstruction of the communication system, not only reducing the size and cost of the radio frequency front end, but also reducing the insertion loss of the radio frequency front end caused by a large number of switches and branch networks; cascading different functional modules through the switch matrix not only simplifies the structure and control, but also enables a single device to be used by multiple channels, thereby reducing the redundancy of devices with the same function.

The invention relates to the technical field of wireless communication testing, and discloses an automatic detection and evaluation method and system for the radio frequency performance limit of multi-antenna wireless equipment, and the method comprises the steps: defining a target port and an interference port for multi-port equipment, constructing an automatic detection topology through a program-controlled radio frequency switch matrix, and carrying out the automatic detection of the radio frequency performance limit of the multi-antenna wireless equipment; and controlling the equipment to enter a full-port synchronous concurrent transmission state with a high duty ratio. In this state, power search is performed on the target port to lock the initial limit power point, and further multi-dimensional evaluation including thermal steady state drift analysis and environmental isolation verification based on a silent window is performed to confirm an effective limit power value. And traversing all ports by the system, repeating the steps, summarizing data, and calculating the consistency range and the rated power of the whole machine. According to the invention, through physical reproduction, heating accumulation and electromagnetic crosstalk environment, accurate evaluation of radio frequency performance of equipment under extreme working conditions and automatic attribution of a thermal failure mechanism are realized.

Disclosed herein is a multi-electrode catheter system including an amplifier stage and an amplifier interface. The amplifier stage includes at least a first quantity of amplifier channels. The amplifier interface includes a first interface having at least the first quantity of interface channels. The amplifier channels are respectively electrically coupled to the interface channels The amplifier interface includes a second interface having a second quantity of catheter channels, the second quantity being greater than the first quantity. The catheter channels are configured to be respectively electrically coupled to corresponding electrode leads of a multi-electrode catheter. The amplifier interface includes a switching matrix electrically coupled between the first interface and the second interface. The switching matrix is configured to selectively electrically couple a selected subset of catheter channels to respective interface channels of the first quantity of interface channels.

A transportable ultra-wideband frequency spectrum monitoring and direction finding device relates to the technical field of radio direction finding and comprises a plurality of direction finding antenna arrays including a first amplitude comparison direction finding antenna array, a second amplitude comparison direction finding antenna array, a virtual baseline direction finding antenna array, a five-element interferometer direction finding antenna array and a Wattson-Watt direction finding antenna array. The plurality of switch matrix networks are respectively connected with the corresponding direction-finding antenna arrays and are used for switching multiple paths of antenna signals and injecting calibration signals; the plurality of down-conversion board cards are respectively connected with the corresponding switch matrix networks and are used for converting the radio frequency signals of different frequency bands into intermediate frequency signals through multi-stage frequency conversion processing; the digital receiver is connected with the plurality of down-conversion board cards and is used for carrying out direct acquisition and channelization processing on the intermediate frequency signals; and an industrial personal computer. The method and the device are used for solving the problems of limited frequency coverage range, limited lateral azimuth coverage range and limited receiving dynamic range of traditional lateral equipment.

Example systems and methods for charging multiple electric vehicles are described. In one implementation, a charger receives DC (direct current) power from at least one DC power source. A splitter is coupled to the charger and receives DC power from the charger. The splitter is capable of providing DC power to multiple electric vehicles. The splitter includes a switching matrix to deliver DC power from the charger to a first electric vehicle. The splitter also includes a control system that instructs the switching matrix to stop charging the first electric vehicle and begin charging a second electric vehicle based on at least one factor.

The invention discloses a transceiving full-duplex dual-mode three-beam radio frequency component architecture and system, relates to the technical field of radio frequency communication and radar perception integrated front ends, and comprises the following steps: improving the stability of a system power-on process by combining an FPGA (Field Programmable Gate Array) unified trigger mechanism with graded power-on time sequence control of a radio frequency switch, a power amplifier and an LNA (Low Network Alliance); flexible reconstruction of channels 1-4 is realized through combination of a 2 * 2 switch matrix structure and dynamic interconnection of a circulator and a dual circular polarization port, real-time rotation of a polarization state and dynamic adjustment of a beam main lobe direction are realized through combination of a Berry geometric phase algorithm and a dual-stage regulation and control strategy of a reflection array rotation element, the flexibility of beam generation is improved, and the beam generation efficiency is improved. The dual-mode polarization reflection array is combined with the full duplex circulator and the time sequence control module, so that three polarization combination modes under the same hardware platform are realized, and the polarization multiplexing efficiency of the communication system is improved.