78 results about "Pulse transmission" patented technology

The embodiment of the invention provides a pipeline blockage monitoring method and system for wet metallurgy slurry conveying, and belongs to the technical field of pressure measurement and pipeline blockage monitoring. The method comprises the following steps: collecting multi-point pressure signals along a slurry pipeline, and extracting pressure pulsation amplitudes and phase characteristics in a pump fundamental frequency and frequency multiplication range based on the multi-point pressure signals so as to establish an on-way pulsation transmission sequence; determining equivalent on-way impedance based on comparison between the on-way pulse transmission sequence and a reference working condition, and outputting an initial judgment result for representing a blockage risk; flow temperature and viscosity estimation parameters are introduced based on the initial judgment result to carry out rheological correction on an impedance threshold value, and a high-frequency phase difference is extracted at an elbow section to update a candidate blockage position; and based on the updated candidate blockage position and the corrected impedance threshold, fusing a phase stability index, and generating and outputting a current blockage evaluation result. According to the scheme, early-stage accurate positioning and stable judgment of slurry pipeline blockage can be achieved under complex working conditions.

The invention discloses a multi-channel high-precision time sequence pulse transmitting system, and the system comprises a control panel which comprises a command receiving control unit and a time sequence generation unit; the command receiving control unit is configured to receive a control command and analyze the control command into pulse basic information; the time sequence generation unit is configured to receive the pulse basic information, generate a coarse delay pulse signal according to the pulse basic information, and generate a driving signal; the daughter board comprises a pulse precise delay unit and an optical port output unit; the pulse fine delay unit is configured to receive the driving signal, perform fine delay adjustment on the coarse delay pulse signal and generate a time pulse sequence; the optical port output unit is configured to receive the time pulse sequence and convert the time pulse sequence into an optical signal. The delay precision of the system can be effectively improved.

The invention provides an optical signal synchronous calibration device and method of an optical computing system. The device comprises an optical probe array, an AI coprocessor, an optical path tuning engine and a low-speed electric feedback line, wherein the optical probe array is arranged on a chip; the optical probe array detects optical signals of wavelength channels corresponding to the plurality of optical calculation units and converts the optical signals into electric signals; the AI coprocessor drives a corresponding optical calculation unit to emit a detection pulse according to a pre-distributed time slot index variable, extracts a phase error from the electric signal and calculates a final calibration amount based on the phase error; the optical path tuning engine performs an optical path tuning operation based on the final calibration amount to calibrate an error of the corresponding optical calculation unit; and the low-speed electric feedback line transmits the electric signal to the AI coprocessor and transmits the detection pulse to the chip. According to the invention, through cooperation of spatial distributed detection and board-level centralized processing, real-time calibration in a dynamic environment is realized.

The invention discloses an efficient deployment method and device of an artificial neural network facing a brain-like chip. The efficient deployment method comprises the steps of pulse transmission between layers of the quantized artificial neural network, sparse coding of pulses and compatibility design based on the storage function of the brain-like chip. Generally, a network running on a brain-like chip is a spiking neural network, and the method is a brand-new method. The method comprises the following steps of: pulsing a quantized artificial neural network activation value so that the converted network can be subjected to high-precision and low-delay reasoning; according to the method, a neuron behavior equivalent to quantitative reasoning of an artificial neural network is provided, the network is successfully deployed on a brain-like chip, and discreteness of the quantitative network and event-driven characteristics of the brain-like chip are combined; in addition, limited by the precision of different hardware, the invention provides a method for scaling an operation intermediate result to avoid an overflow risk.

The invention relates to the technical field of ultra-deep geological exploration engineering, and discloses an ultra-deep horizontal hole full-hole coring and trajectory cooperative control system, which integrates a high-precision sensor and professional monitoring equipment through a geological data acquisition module to construct a multi-dimensional data monitoring system; the geological data transmission module adopts a dual backup scheme of drill rod built-in optical fiber and mud pulse transmission, is connected with the geological data acquisition module and the geological data analysis module through an industrial Ethernet, is carried with a 5G industrial module, and supports remote data access and instruction interaction of each functional module; the geological data analysis module comprises a processing unit and an analysis unit, the processing unit preprocesses the acquired data, and the analysis unit extracts the preprocessed data to calculate a trajectory deviation value and a rock core recovery rate; and the decision feedback module sends out feedback processing according to the calculation results of the trajectory deviation value and the core recovery rate. The system solves the problem of insufficient accuracy of traditional track evaluation.

A method and apparatus for predicting blood pressure, an electronic device, and a readable storage medium, relating to the technical field of medical treatment. The method for predicting blood pressure comprises: synchronously acquiring physiological signals, wherein the physiological signals comprise an electrocardiographic signal, a pulse signal, and a heart sound signal; performing feature extraction on the physiological signals to obtain signal features, wherein the signal features comprise an pre-ejection period duration and a pulse transmission time; and inputting the signal features into a pre-trained blood pressure prediction model, so that the blood pressure prediction model outputs a blood pressure prediction result, thereby improving the prediction accuracy of blood pressure.

The present disclosure describes ultrasound systems and methods configured to interrogate the stiffness and / or elasticity of a target tissue through shear wave imaging. The systems can be configured to transmit multiple push pulses at different focal depths in the target tissue in a strobe-like fashion. The rapidly transmitted push pulses can generate constructive interference to form shear waves of a composite shear wave. An example system can include a beamformer configured to transmit parameters of a push pulse to a transducer array while receiving new parameters of a push pulse from a controller. The dual transmission and reception of parameters of different push pulses reconfigures the beamformer without interrupting push pulse transmission, thereby minimizing the delay between successive push pulses. The push pulses transmitted according to the disclosed methods can generate a composite shear wave configured to interrogate the tissue with enhanced sensitivity over a wide range of depths.

This invention discloses an intelligent psychological guidance system for harmonizing the Qi of the internal organs based on TCM emotional differentiation, belonging to the field of medical electronic equipment. The system includes a multi-node physiological signal acquisition module, a central control and data processing module, and an acoustic intervention output module. The system synchronously acquires multi-channel bioimpedance, volumetric pulse wave, and electrocardiogram signals, extracts pulse wave conduction time and local blood perfusion index, constructs Qi characteristic parameters, and maps them to generate emotional tags. The central control module locks the target resonance unlocking frequency according to the tags, modulates low-frequency vibrations with reference audio to synthesize a multimodal signal, and further combines physiological pulse transmission delay to perform phase compensation, controlling the precise output of the intervention signal during ventricular diastole. Steady-state determination and closed-loop tracking are performed based on the dynamic gradient of impedance variance. This invention achieves objective quantification of TCM differentiation and ensures high-precision physical alignment between intervention energy and the hemodynamic state of the internal organs.

The application belongs to the technical field of photon imaging detection, and particularly relates to a photon counting imaging detection system based on a mixed anode. The system comprises a vacuum sealed tube detector composed of a window coated with a photocathode, a microchannel plate stack and a mixed anode, and a signal processing circuit. The photocathode is used for converting photons incident through the window into photoelectrons. The microchannel plate stack is used for converting the photoelectrons into electron clouds. The mixed anode comprises a strip anode and a delay line anode arranged orthogonally, and the mixed anode transmits the collected charge short pulses of each channel to the signal processing circuit. The signal processing circuit calculates the two-dimensional coordinates of the photons based on the collected charge short pulses of each channel, and then transmits the two-dimensional coordinates of the photons to a terminal for imaging display. The application provides a photon counting imaging detection system based on a cross strip-delay line mixed anode, and solves the problem that the existing position sensitive anode detector cannot simultaneously have high spatial resolution and high temporal resolution.

The utility model relates to the technical field of medical equipment, and particularly discloses a bipolar nanosecond pulse synchronous output circuit and ablation equipment, which comprise a positive pulse output circuit and a negative pulse output circuit, the positive pulse output circuit comprises a positive pulse charging unit, a positive pulse output control unit, a positive pulse transmission unit and a positive pulse output electrode wire which are electrically connected in sequence; the negative pulse output circuit comprises a negative pulse charging unit, a negative pulse output control unit, a negative pulse transmission unit and a negative pulse output electrode wire which are electrically connected in sequence; the positive pulse transmission unit at least comprises a forward multiplication transmission unit which is used for performing forward voltage multiplication or forward current multiplication on the forward output pulse signal; the negative pulse transmission unit at least comprises a negative multiplication transmission unit which is used for carrying out negative voltage multiplication or negative current multiplication on the negative output pulse signal. The bipolar nanosecond pulse synchronous output circuit provided by the utility model can improve instant pulse energy of nanosecond pulse tumor ablation equipment.

Ultra-Wideband (UWB) wireless technology transmits digital data as modulated coded impulses over a very wide frequency spectrum with very low power over a short distance. Accordingly, the inventors have established UWB devices which accommodate and adapt to inaccuracies, errors, or issues within the implemented electronics, hardware, firmware, and software. Beneficially, UWB receivers may accommodate offsets in absolute frequency between their frequency source and the transmitter, accommodate drift arising from phase locked loop and / or from relative clock frequency offsets of the remote transmitter and local receiver. UWB devices may also employ modulation coding schemes offering increased efficiency with respect to power, data bits per pulse transmitted, and enabled operation at higher output power whilst complying with regulatory emission requirements. Further, UWB devices may support a ranging function with range / accuracy not limited to the low frequency master clock employed within these devices enabling operation with ultra-low power consumption.

To increase the number of reception beams generated by phasing addition in an ultrasonic diagnostic apparatus for generating a shear wave by exciting a tissue by a vibrator array and tracking the shear wave with the vibrator array.SOLUTION: In conventional processing shown in a chart group 504, phasing processing for generating a large number of reception parallel beams is performed in a period of the length similar to a period of the length for writing data on a reception signal for track pulses a large number of times in a CH (channel) memory. Contrary to this, in the processing shown in a chart group 506, a period for phasing processing is made longer by using not only the writing period to the CH memory, but also a vacant period NopA for charging required for push pulse transmission, and a vacant period NopB for cooling a probe. Thereby, the number of reception beams that can be generated in the period of phasing processing can be made larger than in the conventional processing.SELECTED DRAWING: Figure 2

The embodiment of the invention relates to the field of communication, in particular to a multi-CPU cooperation system, method and device based on an FPGA and a medium, the system comprises a plurality of PCIe adapter cards formed based on the FPGA and a plurality of CPUs, and each PCIe adapter card at least comprises a PCIe interface, a plurality of high-speed optical ports, a synchronization pulse sending interface and a synchronization pulse receiving interface; wherein the first PCIe adapter card in the plurality of PCIe adapter cards is connected with the first CPU, and is connected with the second high-speed optical port of the second PCIe adapter card through the first high-speed optical port; the second PCIe adapter card is used for being connected with a second CPU through a second PCIe interface; and the first CPU and the second CPU perform time synchronization of a processing task according to the synchronization pulse signal. According to the scheme, the performance of each CPU in a multi-CPU cooperative working process can be ensured, and high-bandwidth, low-delay and low-jitter real-time interaction among the plurality of CPUs is realized.

The application provides an optical signal synchronous calibration device and method of an optical computing system, the device comprising: an optical probe array arranged on a chip, an AI coprocessor, an optical path tuning engine and a low-speed electrical feedback line arranged on a board card; the optical probe array detects optical signals of wavelength channels corresponding to a plurality of optical computing units and converts the optical signals into electrical signals; the AI coprocessor drives the corresponding optical computing unit to emit a detection pulse according to a pre-allocated time slot index variable, extracts a phase error from the electrical signal and calculates a final calibration quantity based on the phase error; the optical path tuning engine performs an optical path tuning operation based on the final calibration quantity to calibrate the error of the corresponding optical computing unit; and the low-speed electrical feedback line transmits the electrical signal to the AI coprocessor and transmits the detection pulse to the chip. The application realizes real-time calibration in a dynamic environment through spatial distributed detection and board-level centralized processing cooperation.

The invention discloses a constant-temperature crystal oscillator time keeping system dynamic compensation system and method, is used for solving the technical problems that an existing constant-temperature crystal oscillator compensation circuit is complex, high in cost and large in size and needs long taming time, and belongs to the technical field of time synchronization. A satellite time service module transmits a time message to a message analysis module, and a constant-temperature crystal oscillator transmits a high-stability clock signal to a clock management module; the clock management module carries out frequency multiplication on a clock signal and then transmits the clock signal to the main control module; the main control module obtains and stores the signals in a reverse compensation coefficient ROM through the difference calculation module, the main control module generates and stores the signals in a dynamic compensation coefficient ROM according to a set duration counting module, and the satellite time service module transmits the signals to the delay module; after counting of the time delay module is finished, processed signals are transmitted to the time keeping module through the set duration counting module and the division operation module, and the time keeping module calls the dynamic compensation coefficient and the reverse compensation coefficient through the compensation module for compensation to obtain the compensated DPPS.

The invention discloses a gating framing imaging dynamic gain uniformity simulation method, and relates to the technical field of ultrafast diagnosis. According to the method, an MCP microstrip cathode physical model containing a material loss angle tangent value is constructed, a gating pulse is set in electromagnetic simulation software to serve as an excitation source, and direct geometric modeling of massive micro-channel holes is equivalently replaced by adjusting the material loss angle tangent value so as to simulate energy attenuation in the gating pulse transmission process; after pulse amplitudes at different transmission distances are obtained, dynamic gain distribution in the pulse transmission direction is calculated by combining the power relation between MCP gain and working voltage. According to the method, fine geometric modeling does not need to be carried out on the MCP micro-channel hole, the computing resource requirement and simulation time are greatly reduced, the dynamic gain uniformity of the MCP can be accurately and efficiently evaluated, and the method can be popularized and applied to design and performance verification of other MCP-based high space-time resolution detectors.

The invention discloses an electromagnetic disturbance simulation test method, system, equipment and medium in an extreme multi-physical environment, and belongs to the technical field of electric power engineering and measurement testing, and the method comprises the steps: electrifying a test device, obtaining extreme multi-physical environment data, generating multiple groups of test conditions, and setting test points; setting the voltage of a high-voltage source, setting an acquisition mode and a trigger value of an oscilloscope, controlling the switching frequency of a pulse transmission line to be adjusted and applied to a to-be-detected electronic transformer, drawing an I-V curve of the electronic transformer according to an acquisition result, and combining the I-V curves of the electronic transformer under multiple groups of temperature and humidity conditions, and analyzing to obtain the failure voltage and the failure current of the electronic transformer. According to the method, the performance data of the electronic mutual inductor under different temperature and humidity conditions and electromagnetic disturbance environments are comprehensively and accurately collected, the data can be deeply analyzed through a scientific and reasonable data processing method and a strict failure judgment criterion, and the performance and reliability of electronic equipment are accurately evaluated.

A visualization system (106) with customizable illumination cycles for addressing relative brightness differences between different illumination sources. A system includes an image sensor (124) including an array of pixels (125) and a transmitter (102) including a plurality of electromagnetic radiation sources (138), wherein the plurality of electromagnetic radiation sources includes a first source and a second source. The transmitter cycles at least a portion of the plurality of electromagnetic radiation sources according to a pulse period including a plurality of pulse emissions by the first source and a plurality of pulse emissions by the second source. When the image sensor reads out a data frame corresponding to the transmission of the first source, at least a portion of the plurality of pulsed transmissions of the second source overlaps a readout period of the image sensor.

The invention discloses a second pulse detection protection circuit, system and method and a vehicle. The second pulse detection protection circuit comprises a second pulse transmission module, an input signal detection module and an output signal detection module. The second pulse transmission module outputs a second pulse signal, the input signal detection module outputs a second pulse sampling signal I, the input end of the output signal detection module is connected with the output end of the second pulse transmission module, and the output signal detection module outputs a second pulse sampling signal II; the positioning module is used for judging whether to generate the second pulse signal based on the second pulse sampling signal I and selecting to generate the second pulse signal, and judging whether to stop generating the second pulse signal and whether to output the second pulse signal based on the second pulse sampling signal I and the second pulse sampling signal II. According to the invention, accurate second pulse signals can be obtained in real time.

Described are optical magnetic recording systems, writers, media, and methods that utilize pulses of electromagnetic radiation to deterministically record information on magnetic storage media unaided by any additionally applied magnetic field such as from a write pole. The recording pulses may be linearly (or longitudinally) polarized pulses or circularly polarized pulses. The pulses may be modulated in accordance with data bits to be written on the media. Modulation may include modulating the polarization state(s) of the pulses and / or modulating the amplitude(s) the pulses, depending on the particular construction or configuration of the magnetic storage media to be used. Described are recording systems and methods that include laser light pulse generation, light pulse modulation, light pulse delivery, and magnetic media constructions.

The utility model discloses a cable rapid detection device, which belongs to the field of electronic detection, and is characterized in that a cable or a flat cable is rapidly connected through a rapid plugging male head and a rapid plugging female head, so that plugging is convenient; the purpose of detecting the multi-core cable can be achieved through the clock circuit, the pulse generation circuit and the pulse transmission circuit. The device mainly comprises a shell, a detection controller is arranged in the shell, the shell is further provided with a plurality of detection lamps, a power lamp and a test button S1, the detection controller is connected with a connector J1, a connector J2 and a connector J3 through the detection lamps, and the detection controller comprises a clock circuit, a pulse generation circuit and a pulse transmission circuit. The pulse generation circuit comprises a NOR gate U2A and a NOR gate U2B, and an input pin 3 of the NOR gate U2A is connected with the test button S1 through the RC delay circuit. The cable rapid detection device is mainly used for cable rapid detection.

This application provides a pulse generation system, an irreversible electroporation device, and a related method. The pulse generation system generates a high-voltage pulse signal by controlling the conduction of a pulse transmission circuit according to a control signal. This high-voltage pulse signal is applied to biological tissue through at least one pair of electrodes, causing irreversible electroporation and cell death within the tissue. Furthermore, the pulse generation system can also generate a low-voltage pulse signal to collect electrical information from the biological tissue. This electrical information is then used to determine the effectiveness of the irreversible electroporation and whether to continue the high-voltage pulse treatment. Thus, a single pulse generation system can generate both high-voltage and low-voltage pulses without requiring additional equipment, making it more convenient to use. Moreover, since it is a single circuit, the control effect is better.

This application provides a high-frequency variable optical pulse signal control method and system, belonging to the field of signal control technology. This application acquires the ambient light intensity value of the target space and uses a wide-angle photoelectric sensor array to collect a time-series sequence of light intensity distribution. Frequency domain transformation is performed on each frame of the sequence to extract interference feature information such as frequency, amplitude, and phase. The interference feature information and the ambient light intensity value are combined to construct a time-series feature vector sequence, which is then input into a prediction model to obtain a prediction sequence containing future interference amplitude and phase. Candidate strong interference time slots are determined based on the prediction sequence, and the target strong interference time slot is selected from them. The target signal transmission time and corresponding target phase difference are calculated based on the predicted phase of the target time slot. The phase difference is used to adjust the high-frequency pulse trigger clock output by the programmable phase-locked loop to drive the optical pulse transmission circuit to transmit the signal, thereby achieving active control of the high-frequency variable optical pulse signal and improving the reliability of communication quality.

The invention discloses a square wave pulse generator and a square wave pulse generation method, in the scheme, a pulse data memory stores parameter data of a square wave pulse sequence to be output; the square-wave pulse generation module responds to an instruction of an upper computer to read parameter data of a to-be-output square-wave pulse sequence stored in a pulse data memory, distributes the parameter data to a plurality of pulse transmission channels for processing to obtain a plurality of seed square-wave pulse sequences and transmits the seed square-wave pulse sequences to the corresponding pulse amplitude adjusting modules respectively; the pulse amplitude adjusting module performs waveform adjustment on each seed square wave pulse sequence to obtain an intermediate square wave pulse sequence and transmits the intermediate square wave pulse sequence to the corresponding master-slave pulse driving module; and the master-slave pulse driving module performs voltage gain and current gain on the intermediate square wave pulse sequence to obtain a square wave pulse sequence to be output. Compared with the prior art that performance limitation still exists in the aspects of voltage range, current driving capability, delay precision or sequence flexibility and the like, the method has obvious advantages.

In related-art processing, phasing processing for generating a large number of reception parallel beams was performed in a period of a length equal to a period in which data of a reception signal for a large number of track pulses is written in a channel (CH) memory. Meanwhile, in processing of the embodiment, a period of the phasing processing was lengthened by using not only the writing period to the CH memory but also an idle period for charging required for push pulse transmission and an idle period for cooling a probe. As a result, the number of reception beams that can be generated in the period of the phasing processing can be increased as compared with the related art.

The embodiment of the invention provides an image acquisition method, system and device, a storage medium and a program product, and relates to the technical field of medical image acquisition and processing. The method comprises the following steps: generating a reference signal through a synchronous control module, wherein the synchronous control module comprises a clock generator and a time schedule controller; generating a differential signal trigger pulse according to the reference signal through a time schedule controller; real-time illumination data are collected through the light supplementing module, and light supplementing data are adjusted based on the real-time illumination data; and transmitting the differential signal trigger pulse to the multi-camera module, and driving the multi-camera module to perform stepped focusing based on the differential signal trigger pulse in combination with the light supplementing data to generate a target image. According to the method, through a hardware synchronous triggering mechanism, time deviation is remarkably reduced, and accurate alignment of dynamic characteristics is ensured; the synchronous exposure mechanism reduces the risk of image splicing dislocation, improves the robustness of image processing, and realizes high-precision, high-synchronism and high-environmental adaptability image acquisition.

The application provides an electric energy metering pulse following communication method and system, comprising pre-distributing upload quantum pairs and issue quantum pairs between an electric energy metering device and a verification detection device, setting quantum pair serial number information and pulse count information; in response to metering pulse transmission, interacting metering pulse report frames and metering pulse response frames, carrying out bidirectional data interaction based on the upload quantum pairs and the issue quantum pairs, and multiplexing the report frames and the response frames into a communication bearing channel; in the interaction process, carrying out synchronous control based on the quantum pair serial number information and the pulse count information; when a metering pulse response frame is not normally received, entering an abnormal mode, and carrying out synchronous recovery based on rectification information. The technical scheme of the application realizes bidirectional communication in a wireless metering pulse transmission process, and improves verification communication stability.

A system for detecting biological information of a driver of a moving object includes: an electrocardiogram sensor provided on a steering wheel of the moving object, the electrocardiogram sensor being configured to detect an electrocardiogram signal of the driver; a pulse wave sensor provided on a seat belt of a seat of the moving object, the pulse wave sensor being configured to detect a pulse wave signal of the driver; a PTT estimation unit configured to estimate a pulse transmission time of the driver using the electrocardiogram signal and the pulse wave signal; and a blood pressure estimation unit configured to estimate at least one of a blood pressure of the driver and a variation in the blood pressure using the estimated pulse transmission time.

The invention relates to the technical field of petroleum and natural gas exploration, in particular to a while-drilling monitoring data analyzing and processing method, system and equipment and a medium. Determining a drilled control well based on the geological data of the target well, and judging whether to construct a hybrid transmission link or not according to the while-drilling monitoring data of the drilled control well; when the target well constructs the mixed transmission link, whether the transmission mode of the while-drilling monitoring data is switched from mud pulse transmission to wireless laser transmission or not is evaluated at each collection time point of the target well; when the transmission mode of the while-drilling monitoring data at a certain acquisition time point of the target well adopts wireless laser transmission, determining a parameter value of wireless laser transmission, and starting the wireless laser transmission according to the parameter value; and whether the transmission mode of the while-drilling monitoring data is switched back from wireless laser transmission to mud pulse transmission or not is evaluated at the acquisition time point of the next target well where wireless laser transmission is started. Data transmission can be rapidly completed, timeliness of operation decision making is ensured, and the drilling speed is increased.

The present invention discloses an integrated avionics management system for a multi-rotor UAV. The system comprises: an environmental monitoring module for acquiring multiple environmental parameters and node data; a map prediction module for generating a dynamic resilience map; a potential energy calculation module for generating communication potential energy weights for multiple paths; a path optimization module for generating an optimal path and a backup path; a computing unit generation module for generating a lightweight self-describing computing unit; a pulse transmission module for converting a bionic pulse sequence; and an energy regulation module for dynamically scheduling radio frequency energy replenishment for a set of safety nodes. The present invention achieves the effects of intelligent optimization of UAV communication links and reliable transmission of instructions in complex environments by collaboratively generating dynamic safety node sets and high-reliability communication paths through multiple modules, thereby solving the problems of weak environmental adaptability, low path planning reliability, and poor instruction transmission efficiency of avionics systems of multi-rotor UAVs in the prior art.