34 results about "Critical signal" patented technology

Embodiments herein provide a system and method for screening and monitoring of cardiac diseases by analyzing acquired physiological signals. Unlike state of art approaches that consider only synchronized ECG and PPG signals for cardiac health analysis and do not consider PCG which is a critical signal for CAD analysis, the system synchronously captures physiological signals such as photo plethysmograph (PPG), phonocardiogram (PCG) and electrocardiogram (ECG) from subject(s) and builds an analytical model in the cloud for analyzing heart conditions from the captured physiological signals. The system and method provides a fusion based approach of combining the captured physiological signals such as PPG, PCG and ECG along with other details such as subject clinical information, demography information and so on. The analytical model is pretrained using ECG. PPG and PCG along with metadata associated with the subject such as demography and clinical information.

A machine learning-based modeling framework provides an approach for quickly identifying and prioritizing intersection safety improvements, and for analyzing adverse traffic events such as collisions and crashes at signalized intersections within a transportation network, to generate risk scores for intersection safety performance screening in a large such network. The framework enables machine learning models to be run using current data to identify dangerous locations and treat them with traffic safety measures, without having available up-to-date or recent crash data. These machine learning models also account for dangerous behavior by considering speed and excessive hard braking and hard acceleration to produce more accurate risk scores.

This document discloses techniques, apparatuses, and systems for secure multi-rail control for sparsely encoded signals. Integrated circuits (ICs) may transmit various signals to manage interactions between circuit components of the IC. These critical signals are common targets for malicious attacks because, when altered, they can cause the IC to perform differently than is intended, and in some cases, bypass security measures. While various strategies may be used to protect against these attacks, modern circuit synthesis tools may optimize away these security measures, leaving the IC vulnerable to manipulation. In contrast, the secure multi-rail control for sparsely encoded signals described herein utilizes multiple rails to transmit sparsely encoded critical signals. Each rail may be controlled by a separate finite state machine (FSM) to reduce vulnerabilities that may arise due to circuit synthesis, provide an adjustable solution that may be leveraged differently based on implementation, and provide comportability to different ICs.

This invention provides a method, system, and medium for crosstalk suppression and timing optimization in high-frequency circuits. A sensor array is deployed along the critical signal path to simultaneously acquire high-frequency crosstalk spectrum and timing eye diagram parameters, generating a crosstalk intensity matrix (CIM) and a timing margin heatmap (TMM) to achieve multi-dimensional quantitative characterization of signal integrity. Based on the CIM, the main interference source is located, and the impedance of the affected line is dynamically adjusted and a reverse compensation current is injected to cancel high-frequency crosstalk at its source. The margin attenuation is predicted using a pre-trained model, and the clock phase of the affected line is fine-tuned to compensate for timing deviations. The optimized efficiency index per unit energy consumption after compensation is calculated, triggering a dynamic update or re-compensation mechanism for the strategy library. This invention achieves dynamic synergy between crosstalk suppression and timing optimization based on a closed-loop architecture composed of monitoring data, neural network prediction, dual-loop compensation, energy efficiency verification, and strategy learning.

Alternate path determination and communication techniques for a vehicle having a plurality of electronic control units (ECUs) on a controller area network (CAN) include providing a first non-CAN communication module associated with a first ECU of the plurality of ECUs, providing a second non-CAN communication module associated with a second ECU of the plurality of ECUs, the second ECU being configured to control a set of safety systems of the vehicle, maintaining a triggering logic database specifying a set of safety critical signals, triggering alternate communication from the first ECU to the second ECU of any of the set of signals matching the set of safety critical signals in response to a communication malfunction of the CAN therebetween, and controlling transmission of any safety critical signals from the first non-CAN communication module to the second non-CAN communication module.

According to an embodiment, a method for debugging a low-power domain in a multi-power domain device is disclosed. The method includes mapping a critical signal of the low-power domain to a latch circuit of a register bank; capturing, by the latch circuit, transitions of the critical signal in registers of the register bank; observing, by a core circuit in a switchable power domain of the multi-power domain device, registers of the register bank; and determining a fault corresponding to the critical signal based on a value of the registers of the register bank.

The invention relates to the technical field of geological engineering, in particular to a dangerous rock mass stability evaluation result verification method based on historical data comparison, which comprises the following steps: acquiring dangerous rock mass frequency and mechanical monitoring data, dividing stable and critical working conditions, constructing a steady state and critical state offset difference surface and an energy gravity center coupling difference surface, and verifying a dangerous rock mass stability evaluation result. And the seismic oscillation triggering frequency and the instability frequency are analyzed to form load triggering comparison information, the fracture expansion rate and the displacement variation are calculated, the stage state is quantified, and stage joint verification data are output. Through frequency slope identification, mechanical parameter offset description, frequency domain energy and gravity center direction coupling, load triggering and instability proportion offset, and crack and displacement joint quantification, continuous determination of a stage state is realized, critical signal identification sensitivity is improved, multi-source evidence consistency is enhanced, objectivity and reverifiability of result verification are optimized, and the method is suitable for popularization and application. Empirical dependence is reduced, and stability evaluation and observation response are in close correspondence.

This invention provides a protection method and system based on single-event error state encoding representation of critical signals. It encodes critical signals (STMRs) and error critical signal IDs, and uses data frames and control frames to represent and store the error states of these critical signals. Finally, the monitoring unit program in the PS system performs error state analysis and formulates protection decisions. This invention can reduce the resource overhead and data transmission bandwidth of user function circuits, while improving the reliability of user function circuit systems implemented on SoC-type FPGAs. It is applicable and operable to digital circuit systems for aerospace electronic equipment.

This invention relates to the field of rail transit operation safety technology, specifically to a collaborative control and monitoring system and method for adjustable cam-driven motors. It addresses problems in existing technologies such as the inability to adjust the trigger sequence of microswitches, reliance on transmission inertia to trigger signal switches (leading to signal loss when inertia is insufficient), the inability to prioritize critical signals, the limitation of reliability due to all auxiliary signals being triggered only after motor power failure, incomplete monitoring functions, and inadequate motor protection. Furthermore, it provides data support for a real-time equipment status perception and early warning system and a full lifecycle management system for intelligent operation and maintenance platforms in rail transit power supply systems. This improves power supply system reliability, reduces power outage risks, optimizes operation and maintenance costs, extends equipment lifespan, and provides a solid guarantee for safe power supply operation.

Small timing margins between the period of a clock and the propagation delays of critical signal paths in an IC at a given supply voltage create a risk for errors in response to voltage droop. Increasing the supply voltage increases the timing margin but also increases power consumption. A margin management circuit includes a delay path having a configurable delay that corresponds to the propagation delay of a critical signal path. Based on a detected timing margin of the delay path, a frequency adjustment signal is generated to adjust the clock frequency to adjust the timing margin. In response to a reduction in the timing margin, due to a sudden voltage droop, the clock frequency may be adjusted to avoid errors. In some examples, the frequency of the clock is compared to a desired frequency and the supply voltage is adjusted to restore the desired frequency.

The invention discloses a method, a system, equipment and a medium for recording important signal behaviors through a module bind, and relates to the technical field of verification, the method comprises the following steps: creating a module file for monitoring, and setting an input port of the module file according to a signal needing to be monitored; processing the signal of the input port according to a preset protocol, and identifying a time point corresponding to an effective operation in the signal; setting an intermediate variable, setting the intermediate variable to be in a first state when effective operation is recognized, and setting the intermediate variable to be in a second state after the effective operation is completed; recording related information of the effective operation into the created log file; and bind the module file with the set input port to a specified DUT internal interface, and correspondingly connecting the input port with a signal to be monitored. According to the invention, key signals can be debugged and debugged and monitored through waveforms; and meanwhile, the method is independent of the UVM and is simple to use.

The application discloses a heart apex integrated ECG body temperature and respiration mechanical sensing and alarming device, which comprises a flexible and fitted base suitable for the physiological arc of the fifth rib heart apex and the middle line of the left clavicle, a heart apex mechanical heart rate pulsation sensing component integrated in the center of the base, a thoracic mechanical respiration fluctuation sensing component in the peripheral area and a body temperature detection module in the inner side, and a built-in data processing and wireless transmission module and a local sound and light alarm; the device is pasted on the heart apex, pure mechanical top pressure elastic sheets and telescopic sensing strips are adopted to synchronously collect the body surface heart rate, the respiration frequency and the body temperature, the data is directly transmitted to the nurse mobile nursing PDA in real time, the local sound and light alarm and the PDA end pop-up window vibration alarm are simultaneously triggered when the heart rate is zero or the respiration stops, 24-hour continuous monitoring and on-the-spot immediate response of the critical signal are realized.

This application, in the field of chip development, provides a method and apparatus for reducing the number of signal logic levels. The method includes: determining critical signals and target signal points; determining logic modules based on the critical signals and target signal points; replicating the logic modules to obtain multiple logic modules, the number of which is determined according to the bit width of the critical signals; determining the input signals of each logic module; inserting a multiplexer between the output terminals of the multiple logic modules and the target signal points, and connecting the critical signals to the selection terminals of the multiplexers. This application, by replicating logic modules with multiple logic levels as a whole and connecting them through multiplexers, effectively reduces the number of logic levels in the critical path, reduces the risk of RTL code modification iterations and verification, accelerates front-end and back-end iterations and timing convergence, and effectively increases the design frequency.

The invention relates to the technical field of nuclear power engineering, in particular to a method and a system for setting a standby power supply system of a nuclear power station, and the method comprises the following steps: setting at least two physically isolated standby power supply sequences, each sequence is provided with at least one gas turbine generator set, a corresponding medium-voltage cabinet, a set control cabinet and a plurality of protection and logic system (PLS) cabinets; the distributed control system of the main control room is respectively connected with the PLS cabinets in the two sequences through Ethernet communication links; and a dual signal interface of a hard wiring link and a Modbus communication link is arranged between the unit control cabinet and the PLS cabinet in each sequence. The method comprises the following steps: constructing two entity isolated redundant sequences, and transmitting safety key signals by adopting high-reliability hard wiring to ensure the certainty and regulation conformity; a communication network is adopted for a large number of state monitoring signals, and comprehensive monitoring is achieved. Through the hierarchical interface strategy, seamless integration of the new power supply and the power plant safety system is realized.

The medical image device of the present disclosure comprises: a probe including a probe control unit for controlling the action of the probe and a first transmit-receive unit provided at a pre-specified position; a source assembly including a second transceiver and a 3D camera on a front surface; and a main control unit for controlling the operation of the medical image device. When the intensity of the signal received by the second transmission / reception unit from the first transmission / reception unit is greater than a predetermined critical signal intensity, the main control unit activates the medical image device and obtains a 3D camera image for at least one of the subject and the probe on the basis of the 3D camera. A radiation irradiation area is displayed in a 3D camera image based on state information of a source component, a detector area is displayed in the 3D camera image, a message for guiding the irradiation area and the detector area to be aligned is output, and when the detector area and the irradiation area coincide, the detector area and the irradiation area coincide with each other. A radiation irradiation preparation signal is transmitted to the first transmission / reception unit by the second transmission / reception unit.

The utility model discloses a BGA packaging structure for a USB3x controller chip, which comprises a BGA substrate and a controller chip, the controller chip is welded at the upper end of the BGA substrate, the outer side of the controller chip is sealed through a plastic packaging layer, and the controller chip is electrically connected with each group of pins of the BGA substrate through bonding metal wires; the BGA substrate is connected with the USB connector; the BGA substrate comprises 60 groups of pins, the 60 groups of pins are uniformly arranged at the bottom of the BGA substrate in a 8 * 8 array, and four pin areas in the center of the array are reserved. According to the utility model, the layout is compact, the occupied space is saved, the pins which need to be externally connected with a filter capacitor or connected with a USB connector are all arranged at the edge position of the pin array, the wiring is smooth, the probability of via hole layer-changing wiring is reduced, and via hole parasitic inductance and capacitance are prevented from causing key signal wiring interference.

The application belongs to but is not limited to the technical field of radar signal processing, and discloses a networking radar interception probability performance evaluation method and system, a networking radar system model is established, the networking radar system comprises a plurality of transmitting nodes; radiation power is calculated: the radiation power of each transmitting node at each position in space is calculated through a radar equation; a critical signal-to-noise ratio of an interception receiver is calculated: the critical signal-to-noise ratio of a signal intercepted by an interceptor is obtained according to the detection probability and the false alarm probability of the interceptor; the equivalent radius of an easy interception area is calculated: according to the radiation power and the critical signal-to-noise ratio, the easy interception area of the networking radar is obtained, and then the corresponding equivalent radius of the easy interception area is calculated. The low-interception performance evaluation index of the application has clear physical meaning, can be used as a target function or a constraint condition to optimize radar parameters in the design of a low-interception probability radar, and reduces the probability that the radar system is intercepted.

This utility model relates to the technical field of circuit boards, and more particularly to a flexible circuit board that is easy to bend. It includes an electromagnetic shielding film composed of a conductive metal layer and a nano-carbon coating; a flexible reinforcing layer partially disposed beneath the electromagnetic shielding film, covering the critical signal line area of ​​the signal transmission layer; a third adhesive layer located between the electromagnetic shielding film and the flexible reinforcing layer; a first insulating layer made of a modified polyimide material with a low dielectric constant; a first adhesive layer bonding the first insulating layer to the signal transmission layer; and a signal transmission layer formed by etching rolled copper foil to create impedance matching lines. Through the combination of a locally flexible reinforcing layer and an LCP dielectric layer, high-frequency insertion loss is reduced by more than 40%, making it particularly suitable for 5G millimeter-wave communication. The localized design of the polyimide flexible reinforcing layer ensures an overall bending radius ≤1mm, while simultaneously increasing the fatigue strength of critical areas by 30%. No impedance linewidth adjustment is required; a tolerance of ±5μm can be achieved using conventional etching processes, improving yield by more than 15%.

Method for a radar system for detecting the environment of a motor vehicle and implementing a function for driver assistance and / or autonomous driving maneuvers, comprising the following steps - Generating a frequency modulation using a controllable or adjustable oscillator, - Generating a sequence of K0 (K0>1) transmitted signals modulated in the transmission frequency, each having the same target frequency profile, possibly apart from a variation in the frequency position, i.e., in particular a variation in the initial and thus equivalently the center frequency, - Transmission of signals using transmitters, - Receiving transmitted signals reflected from objects using receiving devices, - Analyzing the frequency position of the transmitted signals and - Evaluation of the received signals, in particular for the detection of objects, using signal processing means, wherein the actual frequency response across the K0 transmitted signals, i.e., in particular the actual response of the initial, middle, or mid-frequency of the transmitted signals, or its deviation from the target response caused, for example, by frequency instability or frequency drift, is determined absolutely or relatively, i.e., up to an indeterminate constant component, wherein - a time-discrete signal is used for each transmission signal, which contains information about the frequency profile of the transmission signal and which is preferably generated by sampling an analog signal or by reading a free-running counter at predetermined times, - these time-discrete signals via the K0 transmission signals are unnormalized with respect to the position of their phase and / or their initial value, and - during an evaluation of these time-discrete signals, explicit normalization takes place or implicitly an influence of the position of their phase and / or their initial value is eliminated, and depending on an actual curve determined in this way and / or a deviation of the actual curve from the target curve of the frequency position determined in this way and / or a quality measure derived therefrom, a correction is made in the control of the oscillator and / or a correction in the evaluation of the received signals and / or an adjustment of the function for driver assistance and / or autonomous driving maneuvers up to and including its deactivation, whereby - the frequency of the emitted signals is linearly modulated, - the signals received by reflection of the transmitted signals from objects are converted into the low-frequency range by mixing with a signal whose frequency corresponds to the current transmission frequency or differs from it by a constant factor, - the low-frequency received signals are sampled NA times in an equidistant grid, - a first spectral analysis, particularly in the form of a discrete Fourier transform, is performed on each of these NA sample values ​​in order to enable, in particular, distance measurement of the objects and separation for the simultaneous detection of multiple objects, and - at each frequency reference point of the first spectral analysis, a second spectral analysis is carried out, in particular using the discrete Fourier transform, which extends over all or a subset of the values ​​occurring at the respective frequency reference point during the K0 transmission signals, in order to be able to realize, in particular, a relative velocity measurement of the objects and a separation for the simultaneous detection of several objects, and in the procedure (a) - from the determined actual frequency position across the K0 transmitted signals, the expected spectrum of the second spectral analysis of a target at a distance r with a relative velocity of zero is determined, - the resulting spectrum or its magnitude can be used directly to derive a measure of quality and / or - a quality factor is derived from the deviation of the spectrum from the spectrum expected at the target frequency position of a target at distance r with a relative velocity of zero, whereby the same window function is used for both spectral analyses and the resulting spectra are referenced to the same level for comparison and / or (b) a deviation from the actual to the target frequency response is corrected directly or after regression by multiplication with a complex unit vector between the first and second spectral analyses, wherein the phase of the complex unit vector is proportional to this deviation and proportional to the frequency of the respective frequency reference point of the first spectral analysis.

Provided are a solder ball detecting device, a radar sensor, a radar chip and an electronic equipment. A signal pin of a radar chip is fixed to a printed circuit board by a solder ball. The solder ball detecting device include: a sampling unit, configured to collect a sampled signal from a circuit loop that includes the solder ball; and a detecting unit, configured to detect the sampled signal and to output state information reflecting a welding state of the solder ball based on the sampled signal, where the radar chip is configured to transmit critical signals of the related to object detection via the signal pin and the solder ball.

The invention relates to the technical field of sensor data transmission, in particular to a multi-sensor acquisition method and a multi-sensor acquisition system for acquiring key signals, which are characterized in that the priority of each sensor signal is determined according to application scenes and requirements, and the sensor signals influencing system key functions or relating to important monitoring targets are divided into high priorities; other signals are divided into low priorities, and the high priorities can be further divided into emergency key signals and common key signals; the method has the beneficial effects that the sensor signals are subjected to priority division, and different transmission modes are adopted for the signals with different priorities, so that key signals can be transmitted to the receiving end in the shortest time and are preferentially processed, and the accuracy and timeliness of signal processing are greatly improved; key signal delay caused by transmission of a large number of non-key signals is avoided, and key information can be captured in time in a large-data-volume long-distance transmission scene.

The present application relates to the technical field of geological engineering, in particular to a dangerous rock mass stability evaluation result verification method based on historical data comparison, comprising the following steps: obtaining dangerous rock mass frequency and mechanical monitoring data, dividing stable and critical working conditions, constructing stable and critical state offset difference surface and energy barycenter coupling difference surface, analyzing seismic motion trigger frequency and instability frequency to form load trigger comparison information, calculating crack propagation rate and displacement variation and quantifying stage state, and outputting stage joint verification data, in the present application, through frequency slope identification, mechanical parameter offset depiction, frequency energy and barycenter direction coupling, load trigger and instability proportion offset, crack and displacement joint quantification, continuous determination of stage state is realized, critical signal identification sensitivity is improved, multi-source evidence consistency is enhanced, objectivity and reproducibility of result verification are optimized, experience dependence is reduced, and stability evaluation and observation response are closely corresponded.

The invention relates to the technical field of petroleum refining, and discloses a petroleum refining device key signal trend prediction system comprising a data extraction module composed of an emission data extraction unit, an energy consumption data extraction unit and a regeneration data extraction unit; the data extraction module extracts an emission data set, an energy consumption data set and a regeneration data set through an emission data extraction unit, an energy consumption data extraction unit and a regeneration data extraction unit. And the data calculation module is used for performing fusion calculation based on the data extracted by the data extraction module. According to the system, a closed-loop mechanism from accurate judgment to quick response is constructed, double-coefficient cooperative verification is achieved, the correlation efficiency from overall energy consumption to emission of the device is covered, the special emission intensity of a core pollution source is focused, a control blind area that the whole device reaches the standard but the local device exceeds the standard is avoided, the emission performance judgment is more comprehensive and accurate, and the system is suitable for popularization and application. And problem enlargement is avoided.

The medical imaging device of this disclosure includes a detector control unit for controlling the operation of the detector, a detector including a first transceiver at a predetermined position, a source assembly including a second transceiver and a 3D camera on the front, and a main control unit for controlling the operation of the medical imaging device. When the intensity of the signal from the first transceiver received by the second transceiver is greater than a predetermined critical signal intensity, the main control unit activates the medical imaging device, acquires a 3D camera image of at least one of the subject and the detector based on the 3D camera, displays the radiation irradiation area in the 3D camera image based on the state information of the source assembly, displays the area of ​​the detector in the 3D camera image, outputs a message guiding the user to align the irradiation area and the area of ​​the detector, and when the area of ​​the detector and the irradiation area match, transmits a radiation irradiation preparation signal to the first transceiver using the second transceiver.

The invention discloses a control system and method for quantitative oiling lubrication of a blast furnace, and the method comprises the steps: obtaining the temperature of lubricating oil in a pipeline in real time through a temperature sensor, analyzing the temperature, and generating a normal signal, a critical signal and an over-boundary signal; a temperature critical value and a temperature over-threshold value are obtained by analyzing the temperature difference value and the time and are used for judging the state of the equipment and guaranteeing stable operation of the equipment; based on the critical signal, the monitoring period is divided into sub-periods, the temperatures of different sub-periods are analyzed, a long-distance rate coefficient and a short-distance rate coefficient are calculated, a prediction rate coefficient is obtained, the temperature change trend of the lubricating oil is accurately predicted, the out-of-limit time is predicted, an alarm signal is sent out in time, and the equipment fault risk is reduced. Based on the over-bound signal, analyzing an equipment temperature mean value and a lubrication temperature mean value to obtain a correction coefficient, and further calculating the actual addition amount of the lubricating oil to realize accurate oiling; the lubricating effect is effectively improved, and the stability and economical efficiency of blast furnace production are improved.

The invention provides a probability evaluation method and system for an offshore carbon dioxide sequestration leakage signal and a medium, and the method comprises the following steps: obtaining a sampled time domain signal, the signal types at least comprising a sound signal and a vibration signal; calculating an occurrence probability value of a leakage critical signal based on the time domain signal; the occurrence probability value is compared with a preset critical probability index, and when the occurrence probability value is larger than or equal to the critical probability index, it is judged that carbon dioxide leakage occurs. According to the probability evaluation method and system for the offshore carbon dioxide sequestration leakage signal and the medium, the offshore pipeline leakage signal can be monitored, the sequestration safety of the offshore carbon dioxide geology can be clearly evaluated, and the monitoring efficiency and accuracy can be improved by utilizing a leakage probability judgment mode.

The invention belongs to the technical field of engineering machinery CAN bus communication, and discloses a wheeled crane integrated CAN connection system, a communication quality adjusting method and a crane. The system comprises an injection-molded integrated CAN line, a trunk of which extends to a concentration area, and branches of which are in plug-in connection with distributed control elements; at least two independent CAN network interfaces, an adjustable terminal resistor and a communication quality adjusting unit are subjected to one-time injection molding packaging through a multi-layer PCB (Printed Circuit Board); the communication quality adjusting unit performs error frame detection, shielding and filtering amplification on each branch signal, and automatically reduces the rate of a non-key signal or sends the non-key signal in a time-limited manner when the load rate is greater than or equal to 70%. A large number of transition joints are replaced by a pre-cast integrated structure, the problems of vibration loosening, large wiring occupied space, strong magnetic and strong current interference, error frame diffusion and high-load clamping stagnation are solved, and crane CAN communication which is resistant to interference, free of maintenance, high in reliability and low in cost is achieved.

This invention relates to a method, system, and storage medium for processor clock tree deskewing and timing optimization. The method for processor clock tree deskewing and timing optimization, through joint timing and topology analysis, automatic candidate copy object identification, and topology-aware logical copying and connection reconstruction, can effectively reduce the fan-out delay of critical signals and achieve clock tree load balancing and deskewing without modifying the RTL code during the back-end design process. At the same time, iterative optimization ensures timing convergence and logical equivalence, thereby improving the efficiency of processor physical design.

Techniques, apparatuses, and systems for secure multi-rail control for sparsely encoded signals are disclosed. Integrated circuits (ICs) may transmit various signals to manage interactions between circuit components of the IC. These critical signals are common targets for malicious attacks because, when altered, they can cause the IC to perform differently than is intended, and in some cases, bypass security measures. While various strategies may be used to protect against these attacks, modern circuit synthesis tools may optimize away these security measures, leaving the IC vulnerable to manipulation. In contrast, the secure multi-rail control for sparsely encoded signals described herein utilizes multiple rails to transmit sparsely encoded critical signals. Each rail may be controlled by a separate finite state machine (FSM) to reduce vulnerabilities that may arise due to circuit synthesis, provide an adjustable solution that may be leveraged differently based on implementation, and provide comportability to different ICs.