436 results about "Signal chain" patented technology

The invention discloses a nursing data sharing method and system based on the Internet of Things. The method comprises the steps that S1, multi-modal nursing data are collected in real time through a distributed Internet of Things terminal cluster, and a feature signal set is formed; s2, constructing a data coordination engine, executing federal learning preprocessing operation on the feature signal set, and forming a coordination signal flow; s3, dynamically calculating a data contribution degree weight and generating a verification signal chain; s4, monitoring vital sign abnormal indexes in the coordination signal flow in real time, and generating a trigger signal vector; and S5, updating incentive mechanism parameters according to the contribution degree voucher in the verification signal chain, optimizing a service quality strategy based on a network resource allocation scheme in the trigger signal vector, and forming a closed-loop control signal. According to the invention, the problem of data islanding effect in the medical care data sharing process can be solved.

The invention relates to the technical field of anti-electromagnetic interference, in particular to an anti-electromagnetic interference method for a flywheel energy storage system of a data center, which comprises the following steps: acquiring change rate data of the rotating speed and the angular speed of a flywheel, judging the attribution of a disturbance interval, recording change characteristics, extracting an interference identifier, comparing the interference identifier with impedance change, and generating a switching node. Frequency response and reflection coefficient characteristics of the filtering unit are detected, a coupling channel generation label is identified, and output fluctuation is evaluated to generate an anti-interference capability state label. According to the method, the surface resistivity of the shielding layer is dynamically switched according to the comparison result of the specific interference triggering identification bit and the signal link impedance change state in each disturbance stage through classification judgment and correlation marking of inertial disturbance, so that the effect of suppressing electromagnetic interference in real time is optimized; the influence degree of electromagnetic interference can be dynamically evaluated in the system operation process, and the adaptability of the energy storage system to the electromagnetic interference is judged and adjusted in real time.

The invention discloses a waveform synchronization method and device, and the method comprises the steps: firstly generating a dot frequency signal which has the same frequency with a low-frequency reference clock and is synchronous with the low-frequency reference clock after a system is started, feeding back the dot frequency signal in the form of a clock after passing through a signal link, carrying out the digital phase discrimination with the low-speed reference clock, and adjusting the delay of the signal link. And the feedback clock and the reference clock are aligned in phase, so that the certainty of signal link delay is realized. By adopting the thought similar to a phase-locked loop, the problems of uncertain time delay and non-synchronization between channels between the DAC and the FPGA interface can be solved under the condition that an ADC is not used for collecting a feedback waveform and carrying out complex correction calculation, the hardware complexity and cost of the system are remarkably reduced, and the digital phase discrimination speed and the calibration speed are high. In addition, the precision of delay calibration mainly depends on the establishment and retention time of the D trigger, and very high precision can be achieved. The invention also discloses synchronous waveform generation equipment.

An electronic device for improving a performance of a signal chain is described. The signal chain includes multiple electronic components. The electronic device further includes a control circuit. The control circuit is configured to receive a set of figures of merit, wherein the set of figures of merit includes at least one component-specific figure of merit for several different settings of several of the electronic components, respectively. The control circuit is configured to determine and / or receive at least one n-th moment characteristic of a signal of the signal chain. The control circuit is configured to determine at least one performance parameter for a plurality of different combinations of settings of the electronic components, respectively, wherein the at least one performance parameter is indicative of a performance of the signal chain. The control circuit is configured to determine the at least one performance parameter based on the set of figures of merit and based on the at least one n-th moment characteristic. The control circuit is configured to select a combination of settings of the electronic components based on the performance parameters determined for different combinations of settings of the electronic components. Further, a configuration method of configuring a signal chain is described.

The invention relates to a time-frequency system integrity monitoring method, device and equipment and a storage medium. The method comprises the following steps: acquiring a time difference measurement result of each time-frequency signal link and a temperature measurement result of a time-frequency system; and inputting the time difference measurement result and the temperature measurement result into a time difference measurement combination estimation model to generate a temperature change coefficient and a noise normalization coefficient. And according to the temperature change coefficient and the temperature measurement result, calculating a temperature removal time difference measurement result to obtain a first time difference measurement result, and according to the first time difference measurement result and a preset sliding window length, constructing a factor graph model. According to the factor graph model, time difference forecast deviation and time difference frequency deviation of each time frequency signal link are estimated, and according to the time difference forecast deviation, the time difference frequency deviation, the noise normalization coefficient and preset integrity monitoring parameters, an RAIM algorithm is adopted to carry out integrity monitoring on the time frequency system. By adopting the method, the deviation alarm efficiency and accuracy of the time-frequency system can be improved.

The invention relates to the technical field of direct-current power supply fault diagnosis, in particular to a fault self-diagnosis modular direct-current power supply system, which is characterized in that a failure mechanism dynamic modeling unit constructs a multi-stress coupling degradation mapping library, adopts a degradation mechanism decoupling algorithm to separate and superpose failure effects and generates a dynamic degradation model; the early degradation capture unit deploys a high-frequency wide-domain sampling circuit and a noise suppression signal chain, combines time-frequency domain joint feature extraction and separates degradation feature signals from background noise, and the self-adaptive life prediction unit adopts a long short-term memory network and random forest fusion algorithm to dynamically correct parameters and output residual life probability distribution. The intelligent fault judgment unit realizes progressive diagnosis through a hierarchical threshold decision mechanism, and the health management cooperative execution unit triggers a pre-maintenance strategy, executes power flexible derating, redundancy switching or directional fusing isolation, and improves the reliability of the system.

The embodiment of the invention provides an ionization layer electron density inversion method, device, system and equipment and a medium. The method specifically comprises the following steps: determining a target area of electron density inversion; obtaining observation data corresponding to the signal link in the target area; the signal links comprise a first signal link from a GNSS satellite to a ground station, a second signal link from the GNSS satellite to a low earth orbit satellite, and a third signal link from the low earth orbit satellite to the ground station; determining the slant total electron content corresponding to the signal link according to the observation data corresponding to the signal link; solving an ionized layer chromatography function according to the oblique total electron content corresponding to the signal link so as to obtain an electron density value of a grid in the target area; the ionized layer chromatography function is used for representing a mapping relation between the oblique total electron content and the electron density value of the grid. According to the embodiment of the invention, the inversion precision of the ionosphere electron density can be improved.

The invention provides a method and a system for evaluating the health degree of audio and video conference equipment, which comprehensively utilize a QFD thought and AHP and AI methods to construct an equipment fault model and a fault risk transfer model, solve the field problem of fault influence dependency analysis among an equipment principle, a real-time operation state and a historical operation state in equipment fault detection, and improve the reliability of the equipment fault detection. The evaluation method comprises the following steps: scanning a basic state in real time and detecting an environment in real time; verifying the integrity of the signal link; carrying out equipment performance standard test; the influence of the hardware loss on functionality is evaluated; performing actual use state testing, including limiting condition testing and fault injection testing; and performing health degree modeling and grading, and establishing a multi-dimensional comprehensive evaluation model. According to the method, a traditional regular maintenance mode is exceeded through multi-dimensional dynamic modeling and a predictive intervention mechanism, real-time environment sensing and hardware loss modeling are fused, a fault window can be pre-judged, the equipment operation fault rate is reduced, and preventive maintenance is achieved.

An integrated circuit (IC) chip includes a Universal Chiplet Interconnect express (UCIe) interface circuit for transferring UCIe signals. The UCIe interface circuit includes a mainband sub-interface for transferring mainband signals and a sideband sub-interface for transferring sideband signals along a first number of sideband signal paths. A bump interface includes a second number of sideband bumps, each of the sideband bumps for coupling to a signal link. The second number of sideband bumps is less than the first number of sideband signal paths. A converter circuit is disposed between the UCIe interface circuit and the bump interface. The converter circuit includes a receiver circuit to receive first sideband data from the sideband sub-interface. The receiver circuit includes local clock circuitry, oversampling circuitry, and majority detection circuitry to receive oversampled data and to resolve states of sideband data bits based on a majority voting process.

The invention is suitable for the technical field of semiconductor testing, and provides a data acquisition method and device based on a DDIC chip, and testing equipment, and the data acquisition method comprises the steps: receiving a test pattern, controlling the DDIC chip to output a corresponding gray scale voltage signal, and achieving the comprehensive testing of the response capability of the chip in a full gray scale range; secondly, a target acquisition link composed of functional units including impedance conversion, single-ended to differential conversion, programmable gain amplification, filtering, analog-to-digital conversion and the like is utilized, so that the signal driving capability and the anti-interference capability are effectively improved, meanwhile, high-frequency noise and nonlinear distortion are reduced, and the basic quality of sampled data is guaranteed; on the basis, sampling optimization processing is carried out on the sampling data based on the FPGA unit, and the data stability is improved. According to the scheme, through high-precision transmission of the signal link, the data acquisition precision of the DDIC chip is improved, and then the technical requirements of high-precision DDIC chip testing are met.

The invention provides a high-voltage level shift circuit with an adaptive dead zone. The level shift circuit comprises a level shift module, a dv / dt noise detection module, a bank signal control module and an output module. According to the invention, the problem that dv / dt noise affects output through a signal chain is prevented by using a bank turn-off technology; the Blank time of dv / dt noise with different intensities is adaptively adjusted through the dv / dt noise detection module, so that the limitation on the minimum conduction time of an input signal in the application is solved; a low transmission delay, high dv / dt noise resistance and low minimum input signal conduction time are obtained, and the application requirements of a DCDC system and a driving circuit system are met.

An integrated circuit (IC), comprising: a first gain stage configured to apply a first gain to a first signal to generate a first amplified signal; a first converter configured to convert the first signal to a first output signal; a first output pin for outputting the first output signal; gain update circuitry configured to: output a first internal gain control signal to the first gain stage to update the first gain of the first gain stage, subsequently output a first external gain control signal to a second output pin of the IC, wherein output of the first external gain control signal is delayed relative to output of the first internal gain control signal by a first predetermined delay, the first predetermined delay to compensate for signal chain delay between the first gain stage and the first output pin.

The invention relates to an unmanned aerial vehicle communication system based on an ad hoc network, in particular to an intelligent monitoring and automatic response method for unmanned aerial vehicle signal link faults. According to the system, efficient communication between the unmanned aerial vehicles is achieved through the ad hoc network technology, the communication link quality of the unmanned aerial vehicles can be monitored in real time, parameters such as signal strength, the signal-to-noise ratio and the bit error rate can be monitored, and the fault condition of a signal link can be automatically diagnosed. When a communication link is detected to be abnormal (such as antenna loosening or signal strength reduction), the system can intelligently judge and automatically switch channels, close damaged channels, prevent overload or damage of a power amplifier, and ensure the stability of the communication system.

The technology described herein is directed towards a design and implementation of a subarray of unit cells for an active reconfigurable intelligent surface that is power efficient. The reconfigurable intelligent surface design integrates a power amplifier with subarrays of unit cells to amplify the reflected signal, resulting in an active reconfigurable intelligent surface with relatively low power consumption. For example, rather than equipping each unit cell with its own power amplifier, a power amplifier is shared by a m×n (e.g., 3×3) subarray of unit cells, which can be arranged as a module of a larger reconfigurable intelligent surface. Further, the design provides a device for receiving and reflecting the electromagnetic signal in the same polarization by coupling the RF energy, processing, amplifying, and then introducing a delay module to not create unwanted harmonics and amplifying the signal without breaking the signal link.

Described herein are techniques that improve efficiency of analog-to-digital conversion circuits by reducing idling time, during which the ADC circuit is not converting an analog signal to a digital representation, which reduces associated power consumption from keeping the ADC circuit running during idling time. In some embodiments, chop circuits may be used in combination with a plurality of track-and-hold circuits to acquire one polarity of an input signal and convert another polarity of the input signal during a same sampling period. A chop circuit may be configured to alternate between generating a first polarity of the input signal and a second polarity of the input signal. A first T / H circuit may be configured to acquire one polarity of the input signal from the chop circuit while a second T / H circuit provides another polarity of the input signal, previously acquired from the chop circuit, to an ADC for conversion.

To provide an assembly for delivering an electric signal of a controlled impedance between two different environments through feedthrough of a feedthrough block.SOLUTION: A feedthrough 11 has a signal coupling part 61, a dielectric body 53 surrounding the signal coupling part 61, and a ground coupling part 70 surrounding the dielectric body 53. An electric insulation block 30 has a conductive signal link 62, and a separate conductive ground link 71 surrounding the signal link 62. A conductive block has a separate dielectric spacer, and a signal link 62 passing through the spacer. Coupling parts among the block 30, the links 62 and 71 and the spacers are sealed, and airtightly separate two environments. One method press-fits components, and forms no gap between the adjacent components. Another method forcibly puts a potting material into the coupling parts between the components.SELECTED DRAWING: Figure 18

The embodiment of the invention provides a signal link fault self-checking circuit and a radio frequency link. The signal link fault self-checking circuit comprises a signal input end, a signal transmission main circuit and a signal output end which are connected in sequence; the LC units are sequentially connected to the signal transmission main circuit, each LC unit comprises an inductor and a capacitor, the inductors are connected to the signal transmission main circuit in series, and one end of each capacitor is connected with any end of the corresponding inductor; the # imgabs0 # value of each LC unit is greater than or equal to the preset bandwidth of the signal transmission main path; the input end of the coupling branch circuit is connected to any node of the signal transmission main circuit, and the coupling branch circuit is used for coupling transmission signals on the signal transmission main circuit and outputting coupling signals; and the detection unit is connected with the output end of the coupling branch and is used for determining whether the transmission signal is abnormal or not according to the coupling signal.

The invention provides a time service and time keeping method based on satellite-borne GNSS high-precision real-time orbit determination, which has the function of resolving the clock error and clock drift of a receiver in real time, and can perform time model correction by using the clock error and clock drift, thereby finally realizing high-precision time service and time keeping functions. The method is characterized in that rough time information is extracted from a message of a navigation signal; performing high-precision orbit determination through a dual-frequency carrier phase, and resolving a clock error and clock drift in real time; calculating the hardware time delay of the whole signal link by using a high-precision hardware time delay estimation technology; real-time frequency modulation and phase modulation are carried out by using clock drift and clock difference information, and a high-precision time service technology is realized; after a navigation satellite signal is interrupted, a local time model is maintained and PPS (pulse per second) is output by utilizing orbit extrapolation, clock error and clock drift information and a time model, so that a high-precision time keeping function is realized; fusion and advantage complementation of the constant-temperature crystal oscillator and the GNSS receiver are realized, and the cost of high-precision time service is reduced.

The invention provides a battery capacity detection circuit and detection method. One end of a first signal link of the battery capacity detection circuit is used for being connected with a battery to be detected, and the other end is connected with a first control unit; one end of the second signal link is connected to the first signal link, and the other end is grounded; a divider resistor is arranged on the second signal link; the second control unit is configured to disconnect the second signal link before detecting the capacity of the battery to be detected; under the condition that the capacity of the battery to be detected is detected, conducting a second signal link; the first control unit is used for acquiring a first voltage signal when the second signal link is disconnected and acquiring a second voltage signal when the second signal link is connected; the first control unit is also used for obtaining the capacity of the to-be-detected battery based on the first voltage signal and the second voltage signal; the capacity of the to-be-detected battery is calculated through the first signal and the second signal, and compared with detection of a single voltage value, the detection accuracy is higher.

The invention discloses a Beidou space-time signal frequency conversion compatible time service method, and belongs to the technical field of satellite navigation and time service, and the method comprises the steps: obtaining a Beidou space-time signal, monitoring the comprehensive electromagnetic characteristics of the Beidou space-time signal in a current environment, and generating a real-time environment fingerprint; matching the real-time environment fingerprint with an environment strategy knowledge base to obtain a current time service strategy; according to the current time service strategy, dynamically adjusting the receiving frequency and processing parameters of the Beidou space-time signal, and reconstructing a time service signal chain to obtain a reconstructed Beidou time service signal; and reconstructing the Beidou time service signal to establish a unified space-time grid, projecting the pre-received GPS signals of the plurality of GPS systems to the unified space-time grid for alignment correction, and generating a fusion time service result. Signal chain dynamic reconstruction combining environment perception and strategy matching is adopted, and multi-system fusion based on a unified space-time grid is adopted, so that the precision and robustness of time service in a complex electromagnetic environment can be improved.

The invention belongs to the technical field of automatic monitoring of welding equipment, and discloses a welding machine counting and welding omission prevention monitoring system, which comprises a data acquisition module for performing multi-channel parallel acquisition on welding operation state data based on a time slice polling mechanism in a welding process, the collected welding operation state data are embedded into the parameter hash signature stream to form a tamper-proof real-time signal chain; the abnormal state judgment module is used for mapping the real-time signal chain into a state transition hypergraph, analyzing time sequence phase deviation between state nodes based on a time window sliding resonance detection algorithm, identifying a welding skipping related abnormal state and marking an abnormal topological position; the welding spot counting correction module is used for correcting the current welding spot counting value in real time when an abnormal topological position is detected, introducing a cost benefit balance factor between different nodes and outputting a corrected credible welding spot counting value; intelligent monitoring of welding and missing welding prevention are achieved, and operation safety and production efficiency are improved.

The invention discloses a fault repairing method of a server single board and electronic equipment, and relates to the field of server hardware reliability, and the method comprises the steps: scanning a plurality of target signal links of the server single board through a time domain reflectometer, correspondingly comparing the new impedance value and the new reflection waveform characteristic in the scanning result with the initial impedance value and the initial reflection waveform characteristic, determining at least one fault link of the server single board when the comparison result is inconsistent, and performing multi-modal analysis by combining the operation state data of the server single board. And determining the fault level of at least one fault link in the server single board and correspondingly generating a fault repair strategy to switch the fault link to the standby link, thereby solving the problems of single detection dimension, complex fault monitoring blind area, high-frequency signal monitoring failure and the like in the related technology, and improving the detection accuracy. Through time domain reflectometer monitoring, multi-modal data fusion analysis and redundancy switching, fault prediction, accurate positioning and lossless self-repairing of a server single board target signal link are realized.

The invention relates to the technical field of optical communication, in particular to a front optical fiber amplifier with a power balancing function. On the basis of a traditional Er-doped optical fiber amplifier, incident light is divided into a signal link and a competition link through a light splitting device with a fixed proportion. The purpose of introducing the competitive link is to generate a competitive wavelength which has an obvious competitive effect with the signal light in the EDF, and gain competition is carried out in the amplification process of the signal light in the EDF; wherein the competitive link finishes conversion from signal light wavelength to wavelength with obvious competitive effect by adopting a four-wave mixing principle based on HNLF, and then reversely inputs the converted competitive light into the EDF of the signal link to carry out a light amplification process with gain competition, so that the aim of reducing the output power fluctuation range after the signal light is amplified by the EDF is fulfilled.

The invention discloses a power supply self-adaptive active temperature compensation attenuator which comprises a radio frequency attenuation circuit, a positive voltage temperature compensation driving circuit and a power supply self-adaptive adjusting circuit. The radio frequency attenuation circuit is connected in series in a signal link and comprises a transistor and a resistor; the positive voltage temperature compensation driving circuit comprises a transistor, a diode and a resistor. The driving transistor outputs a voltage playing a temperature compensation role by utilizing the temperature change of the electrical characteristic of the diode, and outputs the voltage to the radio frequency attenuation circuit in a voltage division manner; the power supply self-adaptive adjusting circuit comprises a resistor and a diode, the resistor and the diode adjust the grid voltage of a transistor in the driving circuit when the power supply fluctuates, the output voltage of the whole driving circuit is adjusted, and the influence of power supply fluctuation on the driving circuit is counteracted. Positive voltage is used for working, the structure is novel, the chip size is small, the temperature compensation characteristic is good, and the application range is wide; and the power supply interference resistance is good.

The invention provides a method for determining a radio frequency link resource optimization model of a heterogeneous network and related equipment. The method comprises the following steps of: performing uniform mathematical modeling representation on signal coexistence, interference, blockage, loss and time division multiplexing link budget processes of parallel signal links in a multi-band, multi-mode and multi-system reconfigurable radio frequency front end; based on the mathematical modeling representation, dynamically configuring a regulation and control system through a topological connection mode of a time division multiplexing reconfigurable radio frequency front-end resource pool and a signal chain parameter; and optimizing dynamic topology planning and link parameters of the time division multiplexing reconfigurable radio frequency front-end resource pool by using a multi-agent deep reinforcement learning method.

Provided is a direct radiating array (“DRA”) antenna for transmitting or receiving an electromagnetic radio frequency (“RF”) signal of at least one predetermined signal frequency band. The DRA antenna comprising a plurality of radiating elements defining a radiating surface of the DRA antenna, a plurality of RF signal chain paths, each of the plurality of RF signal chain paths coupled to a respective one of the plurality of radiating elements and configured to amplify an RF signal either received by or to be transmitted by the respective one of the radiating elements, and a beamforming network board having a plurality of electrical ports for electrically connecting to the plurality of RF signal chain paths.

The invention relates to the technical field of visible light communication, and discloses an intelligent lamp data transmission system based on visible light communication. The system comprises an optical signal processing module, a transmission management module and a terminal control module. The optical signal processing module collects and processes the visible light signal and outputs a light intensity space coding signal; after the transmission management module receives the signal, the signal is decoded by the signal analysis unit to obtain an original data stream signal and a channel interference characteristic signal, the channel optimization unit processes the original data stream signal and the channel interference characteristic signal to obtain an optimal modulation parameter signal, and the transmission strategy unit outputs a dynamic bandwidth allocation signal; in the terminal control module, an adaptive modulation execution unit adjusts the driving parameters of the light emitter according to the optimal modulation parameter signal, a lamp array control unit adjusts the working state of a lamp light-emitting unit and collects a real-time link state signal, and a link monitoring module outputs a communication quality index. The system is suitable for an intelligent illumination and data transmission fusion scene.

The invention provides an offset voltage self-calibration circuit and method, the self-calibration circuit comprises a comparator and a logic circuit, and the comparator comprises a first stage circuit and a second stage circuit; the comparator is used for inputting differential signals in a working mode and comparing the differential signals to obtain output signals; in a calibration mode, the differential input end is short-circuited and connected to a common-mode level; the logic circuit is used for sampling the output signal and counting the code density output in a preset time; the offset voltage of the comparator is adjusted in a closed loop mode according to the code density, and the number of the MOS tube arrays is fed back and adjusted; mOS tube arrays are connected in parallel at an output stage of a second-stage circuit of the comparator, system imbalance is introduced to offset random imbalance, a logic circuit is used for sampling code density output by the comparator to detect the magnitude of imbalance voltage, and the number of the MOS tube arrays is fed back and adjusted to adjust the magnitude of the system imbalance; the structure is simple, the stability is ensured, a signal link is not influenced, and the precision of the comparator is improved and adjustable.

The invention discloses a vibration suppression circuit applied to a wheel speed sensor and a suppression method of the vibration suppression circuit, the vibration suppression circuit comprises a Hall disc HallR, a Hall disc HallC, a Hall disc HallL, a first signal link, a second signal link, a digital processor DSP and a current signal output module IOUT, differential electric signals output by the Hall disc HallR and the Hall disc HallC are input to the input end of the first signal link, and differential electric signals output by the Hall disc HallL are input to the output end of the second signal link; differential electric signals output by the Hall disc Hall L and the Hall disc Hall C are input to the input end of the second signal link, the output end of the first signal link and the output end of the second signal link are connected with the first input end and the second input end of the digital processor DSP respectively, and the first output end of the digital processor DSP is connected with the current signal output module IOUT. According to the invention, the vibration suppression function of the wheel speed sensor is improved, and the vibration suppression difficulty of the DSP is reduced.

The invention discloses a low-power-consumption electromagnetic water meter system with dynamic excitation and self-calibration functions, which comprises a sensor layer, a metering board, a main control board and a communication board, and is characterized in that the sensor layer comprises an excitation coil, an electrode pair, a temperature sensor and a pressure sensor; the metering board comprises an excitation driving circuit, a signal conditioning circuit, a high-precision ADC and a register block, the main control board comprises an embedded processor, an RTC clock, a data storage module and a display screen, and the embedded processor is used for receiving signals and processing and executing tasks according to a pre-written program; the RTC clock is used for providing an accurate and continuous time reference for the embedded processor; the communication board comprises an NB-IoT / 485 / PWM multimode communication interface, when water flow passes through the measuring pipe, the electrode pair generates an induced voltage signal, after the induced voltage signal is converted by the signal conditioning circuit and the high-precision ADC, the main control board optimizes excitation parameters in real time by combining environmental parameters and a cloud platform strategy, and meanwhile, triple calibration is periodically executed to ensure the precision of a signal chain.