532 results about "Signal selection" patented technology

The invention provides a magnetotelluric data denoising method and device based on a depth fusion model, is applied to a magnetotelluric data denoising system, and relates to the technical field of magnetotelluric data processing. A deep fusion model with a'noise feature recognition-signal selective reconstruction 'framework is established, input signals are pre-classified through a front noise detection module, the problem of false attenuation of effective signals in traditional end-to-end denoising is effectively avoided, a denoising auto-encoder containing a residual structure is utilized, and the denoising accuracy is improved. The deep feature extraction capability of the residual structure and the signal reconstruction advantage of the denoising auto-encoder are combined, the fidelity and integrity of the reconstructed signal are remarkably improved, the denoising process does not depend on manual intervention, and the efficiency and accuracy of data processing are greatly improved.

The invention discloses a narrow pulse generation system and method of an FPGA integrated fiber laser, and belongs to the field of all-digital fiber laser control. The narrow pulse generation system comprises a multi-phase clock generation module, a dynamic delay chain module, a pulse width search module, a signal selection module, a logic operation module, a frequency control module, a self-calibration module and an LVDS driving module which are in synergistic effect. The multi-phase clock generation module is used for realizing rough delay adjustment of nanosecond stepping; the dynamic delay chain module is used for realizing fine delay adjustment of picosecond stepping; therefore, based on the FPGA integrated design, an external delay chip and a high-frequency peripheral circuit are not needed, the hardware complexity and cost are reduced, and the anti-interference capability is high; picosecond-level stepping pulse width adjustment is realized through a two-level structure of nanosecond-level coarse adjustment and picosecond-level fine adjustment, and the limitation of a traditional FPGA (Field Programmable Gate Array) integration scheme is broken through; time delay deviation caused by environment change and hardware drift is considered, temperature compensation and TDC calibration are carried out, and the stability of pulse width is ensured.

The invention discloses a suspension control fault detection and recovery method and device for a maglev train and a medium, and relates to the field of maglev trains, and the method comprises the following steps: S1, constructing a linearized suspension system model; s2, reconstructing a state vector, and generating a suspension gap estimation value; s3, constructing a health probe set, and executing a signal selection strategy; s4, detecting a slow change fault based on the statistical accumulation characteristic of the residual error, and outputting a slow change fault detection result; s5, monitoring the variation trend of the residual error, and triggering a reset mechanism to clear historical accumulated data when a reset condition is met; and S6, generating a final fault mark, and forcibly updating the fault mark to a normal state if a reset mechanism is triggered. According to the hierarchical collaborative decision-making architecture based on the maglev train lap joint structure dynamic model, the condition of performance degradation or failure does not occur in a real system by the algorithm, so that the engineering applicability and reliability of fault diagnosis are improved.

The invention relates to the technical field of dew point measurement, in particular to an intelligent temperature control system and method based on a high-precision chilled mirror dew point meter, and the system comprises a chilled mirror temperature difference positioning module, a main signal selection module, a power response matching module, an interference airflow recognition module, and a current output instruction generation module. A cold mirror end temperature difference is obtained, a section and a lifting direction are judged, synchronous measuring points are screened, a minimum deviation signal is extracted, a power section is matched, a power-on instruction is constructed, a rheumatism disturbance level is identified, parameters are spliced to generate a conduction structure, and a cold mirror temperature control instruction is output. According to the method, section identifiers are constructed through temperature differences and temperature change directions, signals are screened based on time alignment, interference is avoided, power control positions section deviation directions through difference values, disturbance identification is combined with wind speed and humidity differences, disturbance levels are refined, power-on control generates time sequence instructions through multi-parameter splicing, instruction stability and control accuracy are improved, and the method is suitable for large-scale popularization and application. And dynamic closing logic is formed.

A user equipment (UE) reports beam management information to a network. The UE receives a first group of multiple reference signals from a first transmission reception point (TRP) of a network, receives a second group of multiple reference signals from a second different TRP of the network, selects a first beam associated with one of the multiple reference signals of the first group, selects a second beam associated with one of the multiple reference signals of the second group and transmits a message to the network, the message including an indication of the selected first beam and second beam.

The invention provides a graph self-encoding digital twin construction method for aero-engine vibration overrun fault diagnosis, and belongs to the field of aero-engine digital engineering maintenance and guarantee. The construction method is divided into three parts, namely an engine sensor network state correction diagram, a self-encoding model and a feedback decision, and comprises the following steps: acquiring an engine sensor signal, and selecting proper sample characteristics of data; performing denoising, normalization and resampling preprocessing on each piece of state data, constructing a time window, and dividing a training test set; constructing a graph self-coding digital twinborn body; and performing fault prediction by using the constructed digital twinborn body. According to the method, the vibration overrun fault of the engine can be efficiently identified, the normal working condition and the abnormal state can be accurately distinguished, and the accuracy and reliability of fault identification are remarkably improved, so that timely support is provided for preventive maintenance and operation decision of the engine, and a solid technical guarantee is provided for health management of the aero-engine.

The invention is suitable for the technical field of intelligent wearable devices and biological signal processing, and provides a heart rate monitoring method and system of an intelligent wearable device, and the method comprises the following steps: detecting the wearing state and the connection state of the device; waking up the sensor module to collect multi-modal data according to the wearing state and the connection state of the equipment; the multi-modal data comprises an ECG signal, a PPG signal and motion data; the multi-modal data is preprocessed, then the ECG signals and the PPG signals are corrected according to the motion data, motion interference is eliminated, and the corrected ECG signals and PPG signals are obtained; selecting a heart rate calculation mode according to the motion data and the corrected ECG signal and PPG signal, and performing real-time calculation to obtain heart rate data; abnormal recognition is carried out on the real-time heart rate data, and multi-level early warning response is carried out. According to the invention, the power consumption defect in the prior art can be solved, the interference of a motion scene is reduced, the health monitoring accuracy and reliability are improved, and the user experience and health management efficiency can be optimized.

A gate driver and a vehicle display are disclosed herein. The gate driver comprises a shift register module and a selection module. The shift register module includes first to fourth dummy shift register circuits and N shift register circuits. The first dummy shift register circuit is configured to output a first dummy signal. The second dummy shift register circuit is configured to output a second dummy signal. The third dummy shift register circuit is configured to output a third dummy signal. The fourth dummy shift register circuit is configured to output a fourth dummy signal. The selection module is configured to selectively output one of the first dummy signal and the third dummy signal and one of the second dummy signal and the fourth dummy signal according to the forward scan signal and the reverse scan signal.

The invention relates to the technical field of neonatal respiration monitoring, and discloses a neonatal abnormal respiration early warning system. A physiological parameter acquisition module of the system acquires physiological parameter information of a target newborn in real time, and an analysis instruction is triggered after a physiological parameter abnormal signal is obtained; the breathing mode recognition module recognizes breathing mode characteristics and analyzes the breathing mode characteristics to obtain a breathing mode evaluation result; the abnormal feature extraction module extracts abnormal breathing features and analyzes the abnormal breathing features to obtain an abnormal feature evaluation value; the early warning grade evaluation module receives the result and the evaluation value, and obtains a low-risk early warning signal and a high-risk early warning signal through evaluation; the early warning signal generation module selects an early warning type according to the received signal, and obtains parameters of sound early warning and acousto-optic early warning which should be triggered. According to the system, dynamic monitoring and graded early warning of the neonatal breathing abnormity are achieved through multi-module cooperation, and support is provided for timely intervention of the neonatal breathing abnormity.

The invention relates to a driving backboard and a display device. The driving backboard comprises a plurality of pixel driving circuits, a plurality of data lines and a plurality of selection modules; the plurality of selection modules are in one-to-one correspondence with the plurality of data lines, the output ends of the selection modules are connected with the corresponding data lines, the first input ends of the selection modules receive first data signals, the second input ends of the selection modules receive second data signals, and the control ends of the selection modules are used for receiving control signals; the control signal is a first level signal, the selection module outputs a first data signal, the first data signal is used for driving a sub-pixel array in a first row mode, and sub-pixels with different colors are alternately arranged in a first arrangement mode; the control signal is a second level signal, the selection module outputs a second data signal, the second data signal is used for driving a sub-pixel array in a second arrangement mode, and sub-pixels with different colors are arranged in different regions in the second arrangement mode; and the method can be matched with various different silicon-based Micro LED full-color technologies.

To increase the frame rate and reduce power consumption with a wide dynamic range for photoelectric conversion. An imaging device includes: a first photoelectric conversion unit; a first read-out circuit that outputs to a first signal line a first pixel signal corresponding to charges photoelectrically converted by the first photoelectric conversion unit; a second photoelectric conversion unit that has a smaller light-receiving area than the first photoelectric conversion unit; a second read-out circuit that outputs to a second signal line a second pixel signal corresponding to charges photoelectrically converted by the second photoelectric conversion unit; a pixel signal selector that selects the first pixel signal or the second pixel signal based on a result of comparing the second pixel signal with a reference signal; and an analog-to-digital converter that converts the pixel signal selected by the pixel signal selector into a digital pixel signal by comparing the pixel signal with a reference signal whose potential level changes over time.

The invention provides a fault identification method for a photovoltaic energy storage power distribution system, and relates to the technical field of photovoltaic system fault identification, and the method comprises the steps: S1, setting a fault threshold standard; s2, collecting real-time voltage and current signals in the photovoltaic energy storage power distribution system by using a signal source; s3, selecting a proper wavelet basis function; s4, performing convolution operation on the collected signals and the selected wavelet basis function to obtain wavelet coefficients of the signals at different scales and positions; s5, analyzing the characteristics of the wavelet coefficient; and S6, according to the extracted features, in combination with a preset fault threshold, judging whether the system has a fault or not. Real-time voltage / current signals are obtained by means of a signal source to provide data support in the subsequent discrete wavelet transform process, the signals are decomposed into approximate coefficients and detail coefficients by means of wavelet transform, and the fault state existing in the power distribution process of the photovoltaic energy storage system is determined according to the high-frequency and low-frequency conditions of the approximate coefficients and the detail coefficients. And early detection of potential fault hidden dangers is facilitated.

Control circuits, memory systems, and operating methods are provided. A control circuit is configured to control operations of a memory array. The control circuit comprises an input circuit and a readout circuit. The input circuit is configured to: receive a plurality of input signals respectively driving a plurality of word lines of the memory array; select at least one first input signals having a first input value; and provide an activating voltage to at least one first word lines corresponding to the at least one first input signals in a first period. The readout circuit is coupled to a plurality of bit lines of the memory array, and configured to calculate a plurality of output sum signals according to the first input value.

An event detection system and an event detection method of an area are provided. The area includes multiple sub-areas. Each sub-area includes an apparatus and an indication device that is disposed on one side of the apparatus and includes multiple indication signal display modules. The event detection system includes an image-capturing device that captures multiple pieces of area image information of the area and a control circuit electrically connected thereto. The control circuit analyzes the multiple pieces of the area image information for capturing an indication signal of each indication signal display module of the indication device in each sub-area, and multiple workflows are selected according to the indication signal of each indication signal display module. The control circuit executes the workflows of the apparatus in each sub-area by using one or more software operation processes, mouse operation processes, keyboard operation processes, or electronic device operation processes.

The invention provides a chip trimming system and method, and relates to the technical field of chip trimming, and the system comprises a test mode pin, a selection circuit, a core circuit and a physical trimming circuit. When the test mode pin is enabled, the selection circuit sends a test mode instruction to the core circuit through the first output end. When the core circuit enters a test mode, the test input pin inputs various different signals to the selection circuit; the selection circuit processes the various different signals to obtain various different first trimming code combinations, and sends the various different first trimming code combinations to the core circuit through the second output end; the core circuit responds to a plurality of different first trim code combinations to determine a target trim code combination. And the physical trimming circuit performs packaging-level rewiring connection configuration on the trimming bonding pad of the chip layer according to the target trimming code combination. The chip trimming system can reduce the time and cost of chip production on the premise of ensuring the trimming precision.

The invention discloses a permanent magnet wheel hub motor demagnetization fault diagnosis method considering multi-source signal fusion, belongs to the technical field of motor fault diagnosis, and aims to perform permanent magnet wheel hub motor demagnetization fault diagnosis by using a multi-source heterogeneous signal feature fusion method and solve the problem of dependence on additional sensors. The method mainly comprises the following steps: collecting multi-source signals such as current, back electromotive force and vibration under different conditions; performing symmetric point mode processing on the multi-source signal preliminarily, performing adaptive optimization and fusion on SDP parameters according to image fitness, and performing imaging processing again; the image database of the multi-source signals is used for fault diagnosis model training, and the diagnosis accuracy of each signal is obtained; a dynamic decision-making environment is established by integrating environmental conditions, image fitness and fault diagnosis accuracy, and a model is trained to realize optimal selection of multi-source heterogeneous signals under different conditions. According to the invention, through signal selection and fusion under different conditions, the accuracy and efficiency of motor fault diagnosis are improved.

The invention aims at disclosing a wireless cooperative lifting method for a plurality of lifting columns, and relates to the technical field of vehicle lifting control, and the wireless cooperative lifting method comprises n lifting columns; comprising the following steps that any one of n lifting columns is configured as a host, the host generates a random synchronous code, and n is larger than or equal to 6; the random synchronous codes are input into n-1 lifting columns respectively, the n-1 lifting columns are configured as slave machines, and the slave machines are numbered according to the pairing sequence; the host and the ith slave are arranged in a first column, i is an even number, the mth slave is arranged in a second column, and m is an odd number; the host sends a synchronous lifting signal through the first wireless module or the second wireless module; the method has the technical effects that the strongest wireless signal synchronization path is selected, the synchronization of the lifting signals among the plurality of lifting columns is ensured, the blockage of the height synchronization signal of one lifting column is avoided, and the safety is ensured.

A method implemented in a wireless transmit and receive unit (WTRU) may include receiving one or more reference signals; a first codebook-based precoding matrix is selected based on the one or more reference signals, and a second precoding matrix is determined based on the one or more reference signals. The method may include determining a differential precoding matrix based on the first codebook-based precoding matrix and the second precoding matrix. The method may include determining a compressed differential precoding matrix based on the differential precoding matrix. The method may include transmitting feedback information indicating the compressed differential precoding matrix.

The invention discloses an intelligent reflecting surface assisted ultra-wideband indoor positioning method, and relates to the technical field of communication facilities. The intelligent reflecting surface receives an ultra-wideband pulse signal, selects different beam forming schemes, and dynamically generates and applies an optimal phase configuration parameter to each reflecting unit; the user equipment receives the ultra-wideband signals from the direct incidence path and the path reflected by the intelligent reflecting surface, calculates distance information, performs comprehensive position calculation by combining a time difference of arrival or an angle of arrival algorithm, and estimates three-dimensional coordinates of the user equipment; phase configuration parameters are updated, and a closed-loop feedback optimization loop is constructed; and iteratively executing until the final three-dimensional position coordinate of the user equipment is solved. The invention further provides an ultra-wideband indoor positioning device which comprises the ultra-wideband base station, the user equipment and the intelligent reflecting surface, and the intelligent reflecting surface is provided with the passive reflecting unit capable of independently regulating and controlling the phase. The method is suitable for complex indoor and outdoor environments, and meets the high-precision positioning requirements of urban traffic, personnel guidance, disaster sites, logistics and the like.

The invention relates to the field of vehicle control of new energy vehicles, in particular to a new energy vehicle energy recovery self-learning method, which comprises the following steps: step S1, a torque-based determination step: acquiring a vehicle weight signal, a vehicle speed signal and a brake pedal opening signal of a vehicle in real time; according to the vehicle weight signal, a basic recovery torque MAP corresponding to the current vehicle weight tonnage is selected; the method comprises the following steps: S1, acquiring a vehicle speed signal and a brake pedal opening signal, looking up a table in a selected basic recovery torque MAP based on the vehicle speed signal and the brake pedal opening signal, and determining a basic recovery torque value, S2, carrying out gradient correction, and obtaining a current road gradient signal of the vehicle in real time, and S3, carrying out self-learning adjustment, and when the vehicle is in a downhill state and an energy recovery function is activated, carrying out self-learning adjustment on the vehicle. The accelerator pedal opening degree and the duration thereof are monitored in real time, and the problems that influences of the vehicle weight and the gradient are not considered at the present stage and the fault coping strategy is single are solved.

A multiply-accumulate unit comprises a first input configured to receive a first operand encoded using a two-bit encoding scheme in which a ternary value is represented by two bits, wherein identical bits indicate a non-computable value and different bits indicate a computable value. The unit further comprises a second input for receiving a second operand, a zero detection circuit with a logic gate that compares the two bits and generates a skip signal when they are identical, an arithmetic circuit for performing accumulation based on both operands, an accumulator register for storing the result, and a gating circuit that selectively enables writing to the accumulator register based on the skip signal, preventing writing when the first operand is non-computable.

The application discloses a motor driving control system, an electric driving joint and a control method thereof. The control system comprises a first control module and a second control unit. The first control module comprises a first control unit, a signal gating control unit and a motor unit connected in sequence. The first control unit is configured to generate a first control signal according to the operation feedback signal of the motor unit through a vector control algorithm. The second control unit is electrically connected with the signal gating control unit. The second control unit is configured to generate a second control signal according to the operation feedback signal of the motor unit through a reinforcement learning algorithm. The signal gating control unit is configured to select the first control signal or the second control signal as a target control signal to control the operation of the motor unit according to the operation feedback signal of the motor unit and the second control signal. The application can solve the problem that the electric driving joint cannot quickly and safely and reliably adapt to different humanoid robots and has poor adaptability.

The present application discloses a gate drive circuit and a display panel, wherein the gate drive circuit includes a plurality of cascaded gate drive units, and the gate drive units include a node control module, a first frequency division module, a first output module, and a voltage regulation module. By adding a voltage regulation module linked to the first frequency division control line between the first node and the first output module, the signal in the first low-potential line or the signal in the first frequency division control line can be selected and transmitted to the fourth node according to the signal of the first node and the signal of the second node, so that the first frequency division control line can control the potential of the first node through the first frequency division module during the partitioned frequency division display, and then control the first output module to output the signal of the first low-potential line as the first gate control signal through the voltage regulation module, thereby improving the stability of the first gate control signal during the partitioned frequency division display.

The embodiment of the invention provides an auxiliary test circuit, a control method and related equipment, the auxiliary test circuit is arranged on a slave core particle, and the auxiliary test circuit comprises a first test pin used for inputting a first reference clock signal provided by external equipment; the first interconnection port is used for inputting a second reference clock signal provided by the main core particle; the input end of the first signal selector is respectively connected to the first test pin and the first interconnection interface, and the first signal selector is used for selecting a first reference clock signal or a second reference clock signal as a target reference clock signal to be output; and the clock signal generator is used for generating a target clock signal based on the target reference clock signal. According to the embodiment of the invention, the test of the chip of the 3D packaging technology can be realized.

A device having a level shifter includes a first stage and a second stage. The first stage includes a first device circuit and a second device circuit. The first device circuit operates in a first voltage domain, selects an input signal in response to a first select signal, and generates a first intermediate output signal based on the selected input signal. The second device circuit operates in a second voltage domain, selects an input signal in response to a second select signal, and generates a second intermediate output signal based on the selected input signal. The second stage operates in the second voltage domain, receives the first and second intermediate output signals, and generates an output signal. A method of shifting a signal from one voltage domain to another voltage domain is also disclosed.

This disclosure relates to a driving circuit, a driving chip, and a display device. The driving circuit includes a clock module and M channel modules. The clock module generates N first clock signals with a phase difference between each pair of signals. Each channel module includes a phase adjustment module, a PWM generation module, and a selection module. The phase adjustment module is connected to the clock module and is used to phase-shift the N first clock signals to obtain N second clock signals. The PWM generation module is connected to the clock module and the phase adjustment module and is used to generate a first PWM signal based on a reference clock signal and a PWM fundamental frequency, and to generate a second PWM signal based on the reference clock signal, a target clock signal, and the PWM fundamental frequency. The selection module is connected to the PWM generation module and is used to select either the first PWM signal or the second PWM signal for output based on a first selection signal, as the target PWM signal. This disclosure simplifies the circuit structure and reduces the circuit footprint.

Fail-safe and fail-operational behavior may be achieved by providing two fully redundant execution channels including at least a first chiplet die and a second chiplet die located on a single SoC that communicate with each other via a D2D interface. At least a first instance and a second instance of a first automotive safety integrity level (ASIL) domain circuit disposed on at least a first chiplet die and a second chiplet die, respectively, perform at least a first ASIL domain process on one or more automotive sensor output signals to produce a first output signal and a second output signal, respectively. A fault monitoring system monitors at least a first chiplet die for a fault, and assigns a first value to a selector signal if the fault monitoring system detects a fault in the first chiplet die. The selector circuit outputs a second output signal from the system if the selector signal has the first value.

A virtual reality (VR) system including a head mounted display (HMD), a sensor or input device, and options, selection, and display modules. The HMD displays a VR environment including sports content of a live game, a prerecorded game, or a sports channel. The options module generates an options signal to show viewing options in the VR environment. The viewing options define viewing aspects for viewing the sports content within the VR environment. The sensor or input device generates signals based on detection of movement of the HMD, movement of an eyeball of a user, user voice communication, or user contact with the input device. The selection module, based on the signals: selects the sports content and a viewing option; and generates a selection signal. The display module displays the sports content in the VR environment based on the selection signal.

According to some embodiments of the present disclosure, a method of operating a tuneable tight detection and ranging (LIDAR) system. A plurality of laser outputs are transmitted from the LIDAR system, and each of the plurality of laser outputs has a respective laser wa velength such that each of the plurality of laser outputs has a different laser wavelength. A respective plurality of return signals resulting from the plurality of laser outputs are detected, and one of the laser wavelengths is selected based on the plurality of return signals. After selecting the one of the laser wavelengths, light detection and ranging are performed using the selected one of the laser wavelengths. Related LIDAR systems are also disclosed.

The invention relates to the technical field of end-to-end collaboration and the like, and provides an end-to-end mouse control system which comprises a main control device and a controlled device, the main control device is provided with a Windows processing system, a USB mouse keyboard input unit, an HDMI video to USB 3.0 unit, an HDMI signal shunting processing unit, an HDMI signal selection unit and a USB 2.0 to HID mouse keyboard double-end unit; the controlled device is used for sending HDMI video signals to the master control device and receiving USB mouse and keyboard protocol signals. After the HDMI video signal is subjected to shunting processing, one path is transmitted to the display, and the other path is subjected to image acquisition in the main control equipment; after USB mouse and keyboard signals are input into the main control device, the main control device injects a control instruction into the controlled device in an HID mode, and system-level control is achieved; and the Windows processing system combines the input signal and the screen image to execute a cursor position comparison and offset calibration algorithm so as to realize real-time alignment of the cursor positions between the two devices.