55 results about "Pulse computation" patented technology

When a driver of a vehicle brings his / her detection part close to a case, a sensor detects a pulse of the driver at the detection part with an optical method, and takes an image of the detection part. An individual certification means determines whether the driver of the vehicle is an authorized person or not based on the image of the detection part taken by the sensor. An alcohol concentration determiner calculates an index value of a blood alcohol concentration of the driver based on the pulse detected at the detection part by the sensor, and determines whether the index value exceeds a criterial value of a drinking assessment. When it is determined that the driver of the vehicle is an authorized person and the index value does not exceed the criterial value of the drinking assessment, a permission means permits the driver to start an engine of the vehicle.

The invention discloses a floating frequency difference regulation and variable rate load instruction modification-based primary frequency regulation method, and relates to the technical field of primary frequency regulation of a thermal generator set. An industrial control server is used as a core of a primary frequency regulation controller, and a corresponding peripheral communication port is configured; and a software control module of the primary frequency regulation controller comprises a quick frequency time delay calculation unit, an absolute value calculation unit, a frequency change rate judgment unit, a holding pulse calculation unit, a universal frequency time delay calculation unit, a diversity factor gain calculation unit, a diversity factor curve function calculation unit, a compensation limiting unit and an analog quantity instruction output selection unit. According to the primary frequency regulation method, floating frequency difference regulation and variable rate load instruction modification are adopted and a primary frequency regulation system emergency compensation mode is introduced; and effective guarantee is provided for safety of the frequency of a power grid. The method is suitable for the power grid with characteristics of small scale, frequent frequency fluctuation, high amplitude of variation and long stable period.

A method of compensating for component errors within a radar altimeter is described. The method includes periodically switching transmit pulses from a transmit antenna to a programmable delay device, calculating an altitude based on a transmit pulse received from the programmable delay device, comparing the calculated altitude to an expected altitude, the expected altitude based on a pre-set delay through the programmable delay device, and compensating an altitude measured by the radar altimeter, based on transmit pulses output through the transmit antenna, by an error correction amount based on a difference between the calculated altitude and expected altitudes.

An adaptive real-time analysis method for dynamic signals generated by rotary machines improves Vold-Kalman filtering order tracing technology to renew the algorithm logic so that on-line computation ability is achieved. Through signal simulation and practical engineering application to verify the availability, it shows that the output results are extremely accurate. As such, this method is advantaged to estimate the time-domain waveform of specific order signals for the operation of the rotary machines and to interpret the related physical phenomena. Moreover, this method can be applied for a digital signal processor (DSP) to obtain real-time and on-line computation of the order signals needed to be traced and to display the tracing time-domain waveform instantly.

The application discloses a new energy vehicle and an insulation detection method and a system thereof. The method comprises the following steps: inputting an original injection pulse to a new energy vehicle, and collecting a pulse signal currently output by the new energy vehicle to get a real-time recovery pulse; judging whether the voltage amplitude of the real-time recovery pulse is beyond a measurable range, and if the voltage amplitude of the real-time recovery pulse is beyond the measurable range, adjusting the voltage correspondingly to enable the voltage amplitude of the real-time recovery pulse fall into the measurable range; and judging whether the influence of the current voltage of a Y capacitor on the real-time recovery pulse can be neglected, and if the influence of the current voltage of the Y capacitor on the real-time recovery pulse can be neglected, determining a shortest pulse signal time for completing insulation detection, taking the time as the pulse time period of the current injection pulse, inputting an injection pulse corresponding to the pulse time period to the pulse input end, collecting a recovery pulse corresponding to the injection pulse, and calculating the value of insulation resistance according to the injection pulse and the recovery pulse. The insulation detection speed of new energy vehicles can be improved.

When a driver of a vehicle brings his / her detection part close to a case, a sensor detects a pulse of the driver at the detection part with an optical method, and takes an image of the detection part. An individual certification means determines whether the driver of the vehicle is an authorized person or not based on the image of the detection part taken by the sensor. An alcohol concentration determiner calculates an index value of a blood alcohol concentration of the driver based on the pulse detected at the detection part by the sensor, and determines whether the index value exceeds a criterial value of a drinking assessment. When it is determined that the driver of the vehicle is an authorized person and the index value does not exceed the criterial value of the drinking assessment, a permission means permits the driver to start an engine of the vehicle.

An endurance calculation device according to the present invention includes: an acceleration sensor measuring acceleration acting on the subject; an impulse calculation unit calculating impulse acting on the subject based on a value of the acceleration outputted from the acceleration sensor; an output unit outputting walking information, which is information prompting the subject to increase walking speed from low speed to a maximum speed; and an endurance calculation unit calculating, based on a value of the impulse calculated by the impulse calculation unit, endurance of the subject corresponding to the value of the impulse after the first walking information is outputted by the output unit.

The invention discloses a device and a method for error detection under the conditions of small flows of water meters. According to the device, a computer is used for comprehensively controlling a detection process, calculating errors and managing test data; photoelectric sensors are used for converting rotating signals of plum-blossom needles of standard water meters and the tested water meters into electric square wave signals, and outputting the electric square wave signals to an input port of a controller; the controller is used for executing specific control action and data acquisition; a flow control part takes an output signal of a differential pressure flow sensor as a feedback signal of flow control; an error measurement part acquires the output signals of the photoelectric sensors of the standard water meters and the tested water meters; a decimal pulse counting method is adopted for the data acquisition; and acquired data is transmitted to the computer, and the computer calculates error values of the tested water meters according to the test data. By the device and the decimal pulse counting method, time for testing the water meters can be effectively shortened, so that water meter testing efficiency can be greatly improved, and a production bottleneck problem caused by low water meter testing speed in the batch production of the water meters can be solved.

A rotary electronic display panel and a driving method thereof. The rotary electronic display panel turns on or off each LED at the correct position regardless of the change in the rotation speed of the drive motor, and displays text and image data correctly and sharply without using expensive encoders, thereby reducing product cost and improving product quality. price competitiveness. The rotary electronic display panel includes: a driving motor for rotating a rotating shaft at a predetermined speed; a rotating body connected to the rotating shaft to rotate at a predetermined radius of rotation; an LED array provided on the rotating body; an origin pulse a generator that generates an origin pulse when the rotating body rotates one revolution; a line pulse generator that uses the origin pulse to calculate the rotation period of the rotating body, and generates a plurality of line pulses, each line pulse having a value corresponding to the a period of a resultant value obtained by dividing the rotational period of the rotating body by the number of effective areas separated along the rotating radius of the rotating body; and a controller for generating a control signal to selectively turn on or turn off the LED array, The desired text and image data are thus displayed at the generation of each line pulse.

The invention discloses a calibration system and method applied to an ultrasonic gas meter. According to the calibration system and method, a flow collection module collects gas flow velocity data in a metering pipeline once every t seconds; a data processing module formulates a pulse sending strategy according to the gas flow rate data at the current time and the current gas flow grade, meanwhile, an independent pulse generation module sends pulses to the standard test board according to the pulse sending strategy, and the independent pulse generation module and the data processing module run in parallel; the standard test board calculates and obtains measured flow data based on all pulses received within the calibration measurement time, and the standard test board compares the measured flow data with standard flow data to obtain an error value of the ultrasonic gas meter so as to calibrate the ultrasonic gas meter; an independent pulse generation module and a data processing module are introduced to run in parallel; time consumption can be reduced, loss errors can be avoided, the sampling time interval and the pulse trigger threshold value of the grade are set according to the gas flow grade, and the precision of the calibration system is improved.

The invention relates to the technical field of pulse identification, and discloses a method and a system for judging an effective relevant peak pulse sequence. The method specifically comprises the following steps of: for the pulse data received each time, respectively calculating the time interval jitter between each two pulses; calculating the time interval between each two pulses of the standard relevant peak according to the position and the tolerance range of the standard relevant peak pulse sequence; comparing and judging whether the actually received pulse is the relevant peak pulse sequence; calculating the time interval jitter between each two pulses according to the received relevant peak pulse sequence; calculating the time interval jitter between each two pulses of the obtained relevant peak pulse sequence according to the received pulse data to compare with the calculated time interval jitter between each two pulses of the actually received pulses, and judging whether the pulse is an effective relevant peak pulse. The method and the system provided by the invention are used in an identification friend or foe system, and can accurately identify the relevant peak of the message, so that the following message identification content can be more accurate, and the speed can be higher.

The invention discloses a method and system for calculating the stock volume of a storage cabinet based on virtual pulses. A frequency changer drive motor drives a conveying bottom belt to rotate to convey the storage cabinet to store materials. The method comprises the following steps: collecting a frequency parameter of a frequency changer, calculating a total moving length of the conveying bottom belt and a current moving length of the conveying bottom belt according to a formula S = V.t, generating a total number of virtual pulses the same as the total stock volume according to the principle that the total stock volume of the storage cabinet is equal to the actual total number of virtual pulses output by the total moving length of the conveying bottom belt, and calculating the number of the output virtual pulses according to the current moving length of the conveying bottom belt to obtain the current stock volume of the storage cabinet; and according to the method disclosed by the invention, the speed of the bottom belt of the storage cabinet is controlled by the frequency changer drive motor, the conveyed materials are calculated by the virtual pulses, the speed regulation of the bottom belt of the storage cabinet and the calculation of the stock volume of the storage cabinet are achieved flexibly, the equipment cost and the maintenance cost are reduced, and the accuracy is high.

Embodiments of the present disclosure provide an estimation apparatus and method for nonlinear distortion and a receiver. The estimation method for nonlinear distortion includes: sampling a band-limited analog signal to obtain a sampling sequence; calculating a nonlinear perturbation coefficient in nonlinear distortion estimation based on a Nyquist pulse; calculating a nonlinear perturbation term superimposed on a signal by using the nonlinear perturbation coefficient and the sampling sequence; and calculating a nonlinear distortion waveform by using the nonlinear perturbation term. With the embodiments of the present disclosure, not only any modulation formats are compatible, but also advantages of high precision and good adaptability may be achieved.

A pulse radar includes pulse generation circuitry that generates a transmission pulse signal, radio frequency transmission circuitry that transmits a radio frequency signal obtained by performing a frequency conversion on the transmission pulse signal, radio frequency reception circuitry that converts a reflected-wave signal to a reception pulse signal, the reflected-wave signal being a part of the radio frequency signal reflected back from an object to be measured and received via a reception antenna, signal processing circuitry that calculates a distance between the object and the pulse radar, detection circuitry that detects a main pulse, and correction filter coefficient calculation circuitry that calculates an amount of delay and a phase difference of the one or more error pulses with reference to the main pulse to update a parameter of the correction filter circuitry. The correction filter circuitry updates a filter characteristic using the updated parameter.

The invention discloses a method for improving accuracy of calculating a vehicle running speed by a mileage pulse. The method comprises the following steps: S1, a mileage pulse signal has a waveform of a rectangular square wave and when the mileage pulse signal generates a falling edge each time, a processor interrupts and an interrupt handler of the processor records the following parameters: a mileage pulse count C, a time point t when the mileage pulse signal generates the falling edge for the last time and a period T of the last pulse, wherein T=tn-tn-1 and the unit of T is second; S2, a current real-time pulse speed Sa is calculated by adopting an averaging method, and a current real-time pulse speed St is calculated by adopting a periodic method, wherein Sa=Dt / Dc and St=1 / T; S3, by comparing the current real-time pulse speed Sa calculated by adopting the averaging method for obtaining the pulse speed with the current real-time pulse speed St calculated by adopting the periodic method for obtaining the pulse speed, a current real-time pulse speed value S is judged.

A passive sound telemetry system and method is provided, in which phase differences are calculated for every pulse from acoustic signals received via three or six acoustic receivers, to measure a distance and angle with respect to a sound source. The system is applied to an operating toy giving chase to a user while following the user command. The telemetry system includes first to fourth acoustic receivers (111–114) contained in the housing for receiving first to fourth acoustic signals from a user, first to fourth zero crossing detectors for generating first to fourth pulse signals based on the first to fourth acoustic signals, earliest reception signal detector for detecting a pulse signal having the earliest phase among the first to fourth pulse signals, first to fourth arrival time difference calculator (70) for calculating arrival time differences between the pulse signal of the earliest phase and the first to fourth pulse signals, respectively, thereby obtaining an angle and a distance between the center of acoustic receivers and the user, based on a time difference between the second and third minimum arrival time difference values.

System and method for correlation testing of SLMs using stroboscopic methods. A preferred embodiment comprises providing a test pattern to the SLM, configuring a pulsed light source to emit a short duration light pulse at a specified time, instructing the SLM to display the test pattern, emitting the short duration light pulse at the specified time, computing a correlation image based upon light reflected by the SLM, and determining the SLM's performance based upon the correlation image. The pulse of light permits the testing of dynamic and static characteristics of the SLM, while the use of optical computational units in the computation of the correlation image greatly reduces computational requirements and testing time.

A physical quantity measuring method includes: (a) generating a synchronized input signal from an input signal, wherein the synchronized input signal is synchronized with a reference clock; (b) measuring a total number (Nsum) that is the sum of pulses of the reference clock included in each of n units of the synchronized input signal; (c) generating 2n deviation signals based on a delay of the synchronized input signal with respect to the input signal; (d) generating a deviation integration signal by subtracting the total values of n rear-half deviation signals from the total values of n front-half deviation signals; (e) converting the deviation integration signal into a number of pulses of the reference clock; and (f) calculating the average number (Nrave) of pulses of the reference clock included in one unit of the input signal, based on the total number (Nsum), the number (dNsum), and the number n.

An emulator for modeling a network of K transmitters, L receivers, and M multipath components using a product distribution modeling system. The emulator determines for each of MLK paths defined between the transmitters and receivers respective delay, loss, and fading components. The fading component (e.g., attenuation-based, multipath, or both) is determined by calculating a weight value of a time-varying random variable type for each input impulse associated with the K transmitters and for each output impulse associated with the L receivers (including multipath). The modeling subsystem determines a signal propagation value for a modeled communication channel among the MLK paths by combining the delay component, the loss component, and the respective weight values of the input and output impulses associated with the modeled communication channel. The testing subsystem uses the signal propagation value to emulate the modeled communication channel using one or more computer processors.

The invention relates to a high-reliability adaptive sampling circuit for key phase pulses, and belongs to the technical field of power system real-time measurement. The high-reliability adaptive sampling circuit for the key phase pulses comprises a first A / D sampling module, an amplitude attenuation module, a comparison module and a processor, wherein the first A / D sampling module is connected with the processor, the amplitude attenuation module is connected with the processor through the comparison module, the processor is used for calculating an amplitude attenuation coefficient and a comparison threshold according to a key phase pulse collected by the first A / D sampling module, the amplitude attenuation module is used for receiving the attenuation coefficient transmitted by the processor and attenuating the amplitude of the key phase pulse according to the attenuation coefficient, and the comparison module is used for comparing the comparison threshold fed back by the processor with the amplitude attenuated key phase pulse and outputting a level signal capable of being directly collected by the processor. The adaptive sampling circuit can adapt to diversified pulses in the field, reduce the labor consumption and improve the intelligent degree; and meanwhile, the adaptive sampling circuit can performs self-checking on the threshold reference voltage of a comparator timely, thereby improving the reliability of the system.

The invention discloses a device and a method for error detection under the conditions of large flows of water meters. According to the device, a computer is used for comprehensively controlling a detection process, calculating errors and managing test data; photoelectric sensors are used for converting rotating signals of plum-blossom needles of standard water meters and the tested water meters into electric square wave signals, and outputting the electric square wave signals to an input port of a controller; the controller is used for executing specific control action and data acquisition; a flow control part takes the output signals of the photoelectric sensors of the standard water meters as feedback controls of flow control; an error measurement part acquires the output signals of the photoelectric sensors of the standard water meters and the tested water meters; a decimal pulse counting method is adopted for the data acquisition; and acquired data is transmitted to the computer, and the computer calculates error values of the tested water meters according to the test data. By the device and the decimal pulse counting method, time for testing the water meters can be effectively shortened, so that water meter testing efficiency can be greatly improved, and a production bottleneck problem caused by low water meter testing speed in the batch production of the water meters can be solved.

The invention discloses a floating frequency difference regulation and variable rate load instruction modification-based primary frequency regulation method, and relates to the technical field of primary frequency regulation of a thermal generator set. An industrial control server is used as a core of a primary frequency regulation controller, and a corresponding peripheral communication port is configured; and a software control module of the primary frequency regulation controller comprises a quick frequency time delay calculation unit, an absolute value calculation unit, a frequency change rate judgment unit, a holding pulse calculation unit, a universal frequency time delay calculation unit, a diversity factor gain calculation unit, a diversity factor curve function calculation unit, a compensation limiting unit and an analog quantity instruction output selection unit. According to the primary frequency regulation method, floating frequency difference regulation and variable rate load instruction modification are adopted and a primary frequency regulation system emergency compensation mode is introduced; and effective guarantee is provided for safety of the frequency of a power grid. The method is suitable for the power grid with characteristics of small scale, frequent frequency fluctuation, high amplitude of variation and long stable period.

The invention relates to a fusion spiking neural network information processing method and a fusion spiking neural network, and the method comprises the steps of receiving a configuration instruction, and reading the types of spiking neural networks needing to be configured in the configuration instruction, the types of the spiking neural networks comprising a general spiking neural network and a specific spiking neural network; dividing an address space of a memory according to the type of the spiking neural network, and writing configuration information into a register; and reading the configuration information, selecting the corresponding control unit to call the pulse calculation unit to perform pulse calculation based on the configuration information, and storing a pulse calculation result in the memory. Compared with the prior art, the invention has the advantages that the defects that a general spiking neural network is large in connection storage area and a specific spiking neural network is low in universality are overcome, meanwhile, the number of transistors of a chip can be reduced, the size of the chip is reduced, and the efficiency of the chip is improved under the condition that the number of the transistors is the same.

The invention provides an intelligent electric-meter remote meter reading system. The intelligent electric-meter remote meter reading system mainly comprises a CPU (central processing unit), direct-current voltage, a display module, a clock module, a peripheral storage module, a communication interface circuit, a power supply, an RS485 interface, a network access device and a pulse acquisition counting module. The operation process includes the steps of 1), the pulse acquisition counting module calculating data of an electric meter according to pulse and storing the data in an internal RAM (random-access memory); S), time setting, namely transmitting data transfer commands timely to the pulse counting module, collecting the data in the electric meter, storing the data in the peripheral storage module, waiting query of an upper computer, recording numbers, with no responses, of terminals, and uploading the numbers to the upper computer; 3), making backups on the terminals with no responses under two modes and warning, wherein in operation of the upper computer, two modes include timely carbon copy and random carbon copy.

The embodiment of the invention provides a circular synthetic aperture radar self-focusing imaging method and system and electronic equipment. The method comprises the following steps: dividing an imaging region into a plurality of rectangular regions; for each of the plurality of rectangular regions, calculating a projection matrix for each pulse; performing image offset compensation on the projection matrix; performing phase error estimation and phase error compensation on the projection matrix after image offset compensation; and on the basis of the projection matrix after phase error compensation, obtaining a full-scene image of the imaging area through splicing. According to the invention, the envelope error and the phase error are compensated at the same time, the SAR imaging precision is improved, meanwhile, the imaging area is subjected to block processing, the influence of phase error space-variant characteristics on SAR imaging is reduced, and the requirement of SAR imaging for the storage space is lowered.

A numerical control device includes a primary distribution pulse calculator that calculates primary distribution pulses obtained by distributing movement amounts in first and second directions included in a movement command of a work or a tool for each of predetermined calculation cycles. A secondary distribution pulse calculator calculates, for each movement direction, secondary distribution pulses obtained by distributing the primary distribution pulses of each calculation cycle calculated by the primary distribution pulse calculator, before and after corresponding calculation cycles within ranges of distribution sections across the corresponding calculation cycles and having an acceleration-deceleration time constant of the corresponding movement direction as a section width, and then accumulating the primary distribution pulses for each calculation cycle. A drive controller drives at least one of a tool moving device and a work moving device on the basis of the secondary distribution pulses calculated by the secondary distribution pulse calculator unit.

The invention discloses a modeling method for a three-phase inverter real-time simulation model, and the method comprises the steps: employing a quadratic function to fit an external characteristic curve of an IGBT switching operation process for the switching-on and switching-off processes of an IGBT; constructing a single IGBT switch model by a lookup table module of MATLAB / simulink, constructing a calculation model of a three-phase inverter IGBT switch bridge arm by utilizing a finite-state machine, and calculating an output phase voltage according to a control pulse; and importing the established model into an FPGA to construct a three-phase inverter real-time simulation model. The method has the advantages of being high in modeling precision, small in online calculation amount, clearin state conversion and control logic and the like, the built model can be directly transplanted to FPGA hardware, and the three-phase inverter real-time simulation system can be quickly built with low cost.

The blind estimation method for the code element rate and the code element conversion time of the digital modulation signal, disclosed by the invention, is high in applicability, high in robustness and high in anti-noise capability. According to the technical scheme, the method comprises the following steps of: firstly, constructing data in an observation time length into an M*N Hankel data matrix, and performing singular value decomposition on the matrix after partitioning the matrix; then, taking a first left singular vector envelope, a second left singular vector envelope and a third left singular vector envelope, carrying out FFT, adding frequency spectrums of the three obtained singular vector envelopes, and detecting a frequency corresponding to a maximum spectrum value of the sum of the three frequency spectrums at a non-zero frequency as a code element rate; then, generating detection pulses according to the estimated code element rate, calculating the dot product sum of the detection pulses with different delay amounts and the second singular vector envelope subjected to smoothing filtering, and selecting a correct code element conversion time by utilizing the singular value capability distribution difference between a code element truncation data matrix and other forms of data matrixes with the same dimension, and obtaining the optimal sampling time by delaying the sampling point of the chip by one half at the code element conversion time.

Techniques are disclosed for operating a time-of-flight (TOF) sensor. The TOF may be operated in a low power mode by repeatedly performing a low power mode sequence, which may include performing a depth frame by emitting light pulses, detecting reflected light pulses, and computing a depth map based on the detected reflected light pulses. Performing the low power mode sequence may also include performing an amplitude frame at least one time by emitting a light pulse, detecting a reflected light pulse, and computing an amplitude map based on the detected reflected light pulse. In response to determining that an activation condition is satisfied, the TOF may be switched to operate in a high accuracy mode by repeatedly performing a high accuracy mode sequence, which may include performing the depth frame multiple times .