23 results about "Pulse period" patented technology

The application discloses a kind of carbon dioxide laser pulse signal quality detection and anti-interference control method and system, it is related to the field of device using stimulated emission, this method includes: when enabling effective state indication is effective, external pulse width modulation signal is sampled, and the sequence of multiple-point sampling buffer is obtained, the rising edge and the falling edge of external pulse width modulation signal are determined, and the pulse period measurement value and the pulse width measurement value of current pulse are calculated;Determine the preset duty cycle interval to which the duty cycle of current pulse belongs, and generate a duty cycle interval flag;Measure power measurement value, and compare with the proportional threshold value generated based on current pulse width measurement value, to determine power abnormal state;When power abnormal state is abnormal, determine shielding period in preset mapping table according to duty cycle interval flag, generate protection control signal, and perform anti-interference control to laser. By implementing the present application, abnormal detection and anti-interference control of laser output in a larger duty cycle range can be realized.

The present invention provides a radar co-frequency asynchronous interference suppression method based on slow-time interpolation, the method comprising: extracting sample data sets X of the same range gate Nr received by the radar in the slow-time dimension. Nr_i The sample data group X Nr_i The process involves filtering to identify pulse period sequence group K containing interference signals. j And the pulse period sequence number group K that does not contain interference signals s The interference signal is restored; slow-time dimension sample interpolation is performed to obtain the processed signal X'. Nr_Kj Improve the performance of the radar.

This invention discloses an adaptive waveform scheduling method for swarm target tracking based on deep reinforcement learning. By constructing a state space that integrates swarm motion characteristics and spatial distribution, a composite reward function is designed to comprehensively optimize tracking accuracy, resolution, and trajectory stability. A Deep Belief Policy Gradient (DDPG) framework enhanced with Long Short-Term Memory (LSTM) networks is employed to dynamically determine waveform parameters (pulse width, bandwidth, and pulse period). Compared to traditional rule-based scheduling methods, this algorithm can effectively handle dynamic formation changes in swarm targets, balancing tracking accuracy, resolution, and stability in complex scenarios.

This invention discloses an integrated ranging and velocity measurement method based on single-photon lidar, belonging to the field of high-precision laser detection technology. The method includes: obtaining the absolute detection time sequence of the photon response in the echo signal by referring to the absolute time of the zero point at the receiver; calculating the fundamental frequency f' of the echo signal and obtaining the pulse period t of the echo signal. r '=1 / f'; based on t r 'With the pulse period t of the transmitted signal r The Doppler equation is used to obtain an estimate of the target's radial velocity, calculate the relative detection time after motion compensation, and obtain an initial estimate of the initial photon flight time. Substituting these values ​​into the maximum likelihood estimation function, gradient optimization is performed to obtain its local optimum, thus achieving integrated measurement of the target's range and radial velocity. This invention enables the simultaneous acquisition of range and radial velocity in the same physical process.

A SAR-ADC circuit, a control method therefor, and a communication system. The circuit comprises: a timing control module (20), an output selection module (30) and an asynchronous analog-to-digital conversion module group. The timing control module (20) is configured to output at least two second clock signals having the same frequency and successively delayed. An input signal and each of the second clock signals are input into the asynchronous analog-to-digital conversion module group, which is configured to sample and convert the input signal in each pulse period of each of the second clock signals. The output selection module (30) is connected to the asynchronous analog-to-digital conversion module group, and is configured to selectively output a conversion result of the asynchronous analog-to-digital conversion module group in each pulse period of each of the second clock signals.

Various aspects of the present disclosure relate to an enhanced synchronization signal (SS) block structure or design for 6G radio access technologies and other access technologies. The SS block structures may enable the transmission of physical broadcast channel (PBCH) signals at periodicities different than, unique to, or separate from periodicities of SS bursts, such as SS bursts that comprise multiple synchronization signal (SS) blocks. For example, the synchronization signal block structures may decouple the PBCH (and / or other channels) from the SS, facilitating time division multiplexing and / or frequency division multiplexing of the PBCH with respect to the synchronization signals of the SS block.

A plasma processing apparatus disclosed in the present invention has a chamber, a substrate support section, a high-frequency power source, and a bias power source. The high-frequency power source generates source high-frequency power for generating plasma in the chamber. The bias power source applies a pulse of bias energy to a bias electrode in each of a plurality of pulse periods. The high-frequency power source sets a source frequency of the source high-frequency power in each of a plurality of phase periods in each of a plurality of overlap periods overlapping the plurality of pulse periods, respectively, in accordance with a change in a degree of reflection. The degree of reflection is determined by using mutually different source frequencies in the same phase period within two or more preceding overlap periods.

Various aspects of the present disclosure relate to an enhanced synchronization signal (SS) block structure or design for 6G radio access technologies and other access technologies. The SS block structures may enable the transmission of physical broadcast channel (PBCH) signals at periodicities different than, unique to, or separate from periodicities of SS bursts, such as SS bursts that comprise multiple synchronization signal (SS) blocks. For example, the synchronization signal block structures may decouple the PBCH (and / or other channels) from the SS, facilitating time division multiplexing and / or frequency division multiplexing of the PBCH with respect to the synchronization signals of the SS block.

Various aspects of the present disclosure relate to an enhanced synchronization signal (SS) block structure or design for 6G radio access technologies and other access technologies. The SS block structures may enable the transmission of physical broadcast channel (PBCH) signals at periodicities different than, unique to, or separate from periodicities of SS bursts, such as SS bursts that comprise multiple synchronization signal (SS) blocks. For example, the synchronization signal block structures may decouple the PBCH (and / or other channels) from the SS, facilitating time division multiplexing and / or frequency division multiplexing of the PBCH with respect to the synchronization signals of the SS block.

The application provides a data acquisition method, a control device and a multi-sensor system. The method comprises the following steps: in the i-th pulse period, when the first sensor outputs a first pulse signal, dividing the first pulse signal based on the acquisition frequency corresponding to the second sensor to generate a second pulse signal; when a preset time length is reached, triggering the second sensor to enter a data acquisition stage based on the second pulse signal; in the i+1-th pulse period, acquiring a plurality of first data generated by the first sensor and second data generated by the second sensor; wherein the first generation time and the second generation time are synchronized to construct calibration data for calibrating device parameters of the first sensor and the second sensor. The above method can align the generation time of the data acquired by different sensors.

Various aspects of the present disclosure relate to an enhanced synchronization signal (SS) block structure or design for 6G radio access technologies and other access technologies. The SS block structures may enable the transmission of physical broadcast channel (PBCH) signals at periodicities different than, unique to, or separate from periodicities of SS bursts, such as SS bursts that comprise multiple synchronization signal (SS) blocks. For example, the synchronization signal block structures may decouple the PBCH (and / or other channels) from the SS, facilitating time division multiplexing and / or frequency division multiplexing of the PBCH with respect to the synchronization signals of the SS block.

Embodiments of the present disclosure provide a method for signal processing, a circuit for signal processing, a chip for signal processing, and an electronic device. The method for signal processing includes: outputting a positive output signal and a negative output signal based on the PWM positive signal and the PWM negative signal; wherein, in response to an absolute value of an amplitude of the input signal being larger than 0 and smaller than a first threshold, each of the positive output signal and the negative output signal includes 2 pulses within one pulse period, and pulse widths of the pulses included in the positive output signal are different from pulse widths of the pulses included in the negative output signal. This solution can reduce the frequency requirements for a passive filter that processes positive and negative output signals, thereby reducing the costs of the system for signal processing.

The invention relates to a water pump empty pumping detection method and system, and the method comprises the steps: adding a voltage and current conversion module in a water pump control circuit, and converting a working current signal of a water pump into a voltage signal; collecting a voltage signal value output by a voltage-current conversion module in a pulse period of the water pump in the empty pumping state at a frequency, and further obtaining a first judgment threshold value corresponding to the empty pumping state; in the use process of the water pump, calculating judgment data at the current moment based on the voltage signal value of the water pump in the pulse period; and whether the water pump is in an empty pumping state or not is judged based on the size relation between the judgment data and a first judgment threshold value. According to the invention, the detection timeliness and accuracy are improved, and the cost of the whole machine is reduced.

This application discloses a method for synchronously acquiring IMU and ECG signals. The method includes: providing a unified clock reference for the ECG and IMU acquisition units by outputting a clock signal from the same source; synchronously configuring the sampling rate, range, and filtering parameters of both units; generating a synchronous trigger pulse signal with a period matching the sampling rate; establishing hardware synchronous trigger conditions by inputting the start-up terminals of the two units; after triggering sampling, marking the dual-channel raw data with the same high-precision timestamp; detecting clock drift by timestamp deviation verification; and adjusting the trigger pulse period to compensate for errors. Implementing the embodiments of this application can solve the problem of eliminating clock frequency difference and drift between the two acquisition links at the hardware level, achieving precise timing alignment of ECG and IMU signals, and improving the artifact removal effect and monitoring reliability of ECG signals under motion conditions.

Disclosed are a pulse width modulation (PWM) signal generation circuit and a lamp control system including the same. The PWM signal generation circuit includes a pulse period control circuit configured to control charging and discharging of a first capacitor, and generate a first output signal related to a first number of times of charging of the first capacitor, a pulse width control circuit configured to control charging and discharging of a second capacitor, and generate a second output signal related to a second number of times of charging of the second capacitor, and a control logic circuit configured to determine a period of a PWM signal based on the first output signal, determine a pulse width of the PWM signal based on the second output signal, and output the PWM signal having the period and the pulse width.

The application discloses a kind of for microwave source driven modular high-voltage power supply and its millisecond level current-limiting pulse modulation method, belong to power electronics and microwave heating technical field.The power supply includes sequentially connected AC input unit, rectification and boost unit, high-voltage filter unit, current-limiting pulse modulation unit and protection unit.Current-limiting pulse modulation unit includes power semiconductor switch tube, drive circuit and series current-limiting inductance, for chopping modulation to anode current when receiving external pulse control signal, make output power switch between peak power and low power in preset pulse period.Protection unit is used to detect fault and send blocking signal.A plurality of power supply modules can be combined by series-parallel connection to expand power.The application realizes millisecond level fast pulse modulation, has modular expansion capacity and multiple fast protection function, suitable for magnetron, klystron and solid-state microwave source driving.

The application provides a kind of active array multichannel calibration method and system based on quadrature phase shift modulation, it is related to radar detection technical field, including the following steps: active array is placed in wave-absorbing darkroom or outdoor open area, a calibration signal source is placed in the position that is directly opposite active array and the vertical distance with active array is set distance R;Calibration signal source emits pulse signal according to fixed pulse repetition frequency;In N pulse periods, the signal of each receiving channel is modulated using N*N element orthogonal matrix, the amplitude estimation value and phase estimation value of each receiving channel are obtained by correlating calculation of the conjugate complex code corresponding to each receiving channel and the synthesized signal, and then the amplitude calibration coefficient and phase calibration coefficient are obtained, the calibration of each channel of active array is realized, and the problem that the mutual coupling effect between each channel in the active array of traditional calibration method cannot be reflected in analog beam forming architecture is solved.

This invention discloses an oscilloscope-based anti-interference algorithm, a computer, and a storage medium based on adaptive threshold and waveform feature matching. The oscilloscope-based anti-interference algorithm includes: if a signal segment simultaneously satisfies the following conditions: its pulse period is higher than a period target threshold, its pulse amplitude is higher than an amplitude target threshold, and its waveform similarity to a standard pulse waveform template is lower than a similarity target threshold, then the signal segment is identified as an interference signal segment; and the interference signal segment is removed and filled with the average value of the normal pulse signal adjacent to the interference signal segment; wherein the period target threshold, the amplitude target threshold, and the similarity target threshold are all dynamic. The beneficial effect of this invention is that it avoids measurement deviations caused by the user speaking or slight upper arm movements, and has a better anti-interference effect.

Disclosed are a pulse width modulation (PWM) signal generation circuit and a lamp control system including the same. The PWM signal generation circuit includes a counting circuit configured to generate a counting signal, a pulse period control circuit configured to convert the counting signal into a first analog output signal and compare the first analog output signal with a first comparison voltage to generate a first output signal, a pulse width control circuit configured to convert the counting signal into a second analog output signal and to compare the second analog output signal with a second comparison voltage to generate a second output signal, and a control logic circuit configured to determine a period of a PWM signal based on the first output signal, determine a pulse width of the PWM signal based on the second output signal, and output the PWM signal having the period and the pulse width.

This invention discloses a method and application for accurately timing the pause time of a Pause frame. The method includes the following steps: calculating the pause time of packet transmission at the port transmitter based on the Pause Quanta in the Pause frame; and configuring the actual timing pulse period of a preset timing pulse according to the current rate of the port to time the pause time. This method can achieve accurate timing of the Pause Quanta through timing pulses with independently configurable periods. The configurability of the timing pulse period also enables accurate calculation of the Pause Quanta time under SerDes overclocking. In the case of mixed port rates and SerDes overclocking, the duration of stopped packet transmission can also be accurately timed based on the Pause Quanta, thereby achieving precise control of packet traffic.

Embodiments of the present disclosure provide a method for signal processing, a circuit for signal processing, a chip for signal processing, and an electronic device. The method for signal processing includes: performing PWM modulation on an input signal to obtain a PWM positive signal and a PWM negative signal; and outputting a positive output signal and a negative output signal based on the PWM positive signal and the PWM negative signal; wherein, in response to an absolute value of an amplitude of the input signal being larger than a threshold, one output signal of the positive output signal and the negative output signal does not include a pulse, and the other output signal of the positive output signal and the negative output signal includes 2 pulses within one pulse period. This solution can improve the performance of the output signal while improving the performance.