844 results about "Signal conditioning circuits" patented technology

The invention belongs to the technical field of semi-aviation frequency domain electromagnetic method geophysical exploration, and relates to a semi-aviation electromagnetic detection frequency domain receiving system and a design method. Comprising an unmanned aerial vehicle, a three-component magnetic core coil sensor which is suspended by the unmanned aerial vehicle and carries out dynamic flight detection in a detection area, a signal conditioning circuit which conditions data received by the three-component magnetic core coil sensor, and a receiver which is carried above the unmanned aerial vehicle and is used for receiving signals conditioned by the signal conditioning circuit, the three-component magnetic core coil sensor comprises three mutually orthogonal magnetic rods, the magnetic rods are magnetic cores and are fixed through a non-metal cubic framework, the signal conditioning circuits are divided into three groups and receive signals of the three magnetic rods respectively, and the three-component magnetic core coil sensor can be used for detecting the time constant of a low-pass filter circuit in each signal conditioning circuit. The sensitivity corresponding to the frequency band influencing the saturation of the received signal of the receiving system is reduced, and the effective gain attenuation is carried out on the low-frequency part, so that the data saturation can be prevented.

The invention discloses a high-precision delay synchronization system with a phase jitter compensation function. The high-precision delay synchronization system comprises an upper computer, an external trigger module, a time reference module, a master control ZYNQ module, a frequency synthesis and trigger mode selection module, a jitter compensation module, a precise delay circuit and an output signal conditioning circuit. According to the invention, the pulse output with adjustable delay time, amplitude and polarity can be realized, the high-precision delay synchronization of signals is realized, and the stability is higher.

The invention belongs to the field of aircraft wireless temperature and pressure sensors, and relates to a multi-redundancy aircraft wireless temperature and pressure sensor and a control method. The sensor comprises a multi-redundancy pressure sensitive assembly, a signal conditioning circuit, a Bluetooth transceiver module, a solid battery, a rear cover, a support and an outer cylinder. The pressure-sensitive assembly is welded to one end of the outer cylinder. The support is welded to the pressure-sensitive assembly. The Bluetooth transceiver module, the signal conditioning circuit and the solid battery are fixed on the bracket; the rear cover is in threaded connection with the outer cylinder; the pressure sensitive assembly is connected with an inner cavity of a tire through a pipeline and transmits pressure data to the signal conditioning circuit, and after the temperature measuring module measures the temperature, temperature and pressure signals are conditioned and calculated and then sent to a ground terminal through the Bluetooth receiving and transmitting module.

The invention discloses a device for detecting hollowing of a building outer wall based on sound signals and a use method, and relates to the technical field of building engineering detection, and the device comprises a sound sensor array which is used for collecting the sound signals of the building outer wall; the signal conditioning circuit is used for amplifying and filtering the acquired weak sound signals; the data acquisition card is used for acquiring the processed sound signal data and transmitting the sound signal data to the microprocessor; the microprocessor is internally provided with a data analysis and hollowing judgment algorithm and is used for analyzing and processing the data; the display and operation terminal is used for setting detection parameters and displaying a detection result; the automatic knocking device is used for knocking and exciting the outer wall; the environment sensor is used for collecting temperature, humidity and noise data of a detection site; the building outer wall hollowing detection system can accurately detect and position building outer wall hollowing, and has the advantages of efficient detection process, strong environmental adaptability and perfect data management function.

The invention relates to the technical field of DC / DC power supplies, and discloses a DC / DC power supply function parameter testing method and system and computer equipment, and the method comprises the steps: injecting a preset disturbance signal into an input end of a tested DC / DC power supply through a signal conditioning circuit, and obtaining output voltage response data and output current response data; adopting a dynamic multi-parameter test system and collecting target test parameter data; calculating a characteristic parameter set, and executing voltage-temperature control model predictive control analysis to obtain a control parameter sequence; and controlling the power output value of the electric heating wire, the rotating speed value of the heat dissipation fan and the position value of the electric push rod in the test box body to obtain an intelligent adjustment test environment and generate an aging test result and a test strategy adjustment instruction, thereby overcoming the problem of parameter detection blind areas in a traditional test method, and improving the test accuracy even under the condition that the output voltage is accurately matched with the set value. And the power supply performance abnormity can be effectively identified, and the reliability and accuracy of the test are obviously improved.

The invention discloses an anti-electromagnetic interference high-precision current sensing circuit and a current sensor, and relates to the technical field of current measurement. The system comprises a signal conditioning circuit used for carrying out voltage division on power supply voltage to obtain direct current bias voltage, superposing the direct current bias voltage with a sensor signal collected by a TMR sensor, carrying out amplification processing on the superposed sensor signal, and transmitting the amplified sensor signal to a signal filtering circuit; the signal filter circuit is used for filtering interference signals and clutters of the amplified sensor signals, and the filtered sensor signals are sent to the MCU for signal processing. The anti-electromagnetic interference high-precision current sensing circuit has the beneficial effects that firstly, the anti-electromagnetic interference high-precision current sensing circuit analyzes related interference sources and propagation paths of electromagnetic interference in a power grid operation environment, optimizes and selects types of electronic components and device layout, and effectively reduces the interference of the electromagnetic interference on the current sensing circuit; secondly, a hierarchical protection system structure is followed, and the influence of electromagnetic interference on a measurement circuit is reduced;

The invention discloses a DC fault arc identification method and device based on a wavelet transform algorithm, and the method comprises the steps: collecting a DC line current signal through a high-bandwidth current sensor, carrying out the digitalization of a signal conditioning circuit and a high-speed ADC, and sequentially carrying out the preprocessing of the elimination of baseline drift through differential filtering and the suppression of specific frequency interference through adaptive notch; performing 3-8-layer multi-scale decomposition on the pure signal by adopting a Daubechies wavelet basis, preferably selecting high-frequency detail coefficients from the first layer to the third layer, and creatively fusing a multi-scale energy entropy representing energy distribution randomness and a time domain kurtosis representing transient impact to form a composite characteristic quantity; a threshold value (threshold value = mean value + adaptive coefficient * standard deviation) is dynamically generated based on sliding time window historical data, the adaptive coefficient is dynamically adjusted according to the load type, the resistive load is 1.8-2.2, and the inductive / capacitive load is 2.5-3.5; and when the composite characteristic quantity exceeds a threshold value and the sample proportion is greater than or equal to 85% within the duration of 0.5-5ms, a tripping execution mechanism is triggered.

The invention provides a lightning trajectory data fusion detection based single-tree accurate early warning system for lightning fire, and relates to the technical field of meteorological disaster monitoring and early warning and forest lightning fire prevention and control. The lightning trajectory data fusion detection based single-tree accurate early warning system comprises an electromagnetic radiation receiving module which adopts an antenna array composed of at least four directional antennas to receive electromagnetic radiation signals generated by lightning, the antenna array is connected with a signal conditioning circuit, and the signal conditioning circuit is connected with the electromagnetic radiation receiving module. The signal conditioning circuit amplifies the received weak electromagnetic signal by 100-1000 times, processes the weak electromagnetic signal with a filtering bandwidth of 10 kHz to 1 MHz, and transmits the weak electromagnetic signal to a data acquisition card with a sampling frequency of 5-20 MS / s and a sampling precision of 12-16 bits. By integrating lightning electromagnetic radiation continuous sampling, infrared, visible light and ultraviolet multispectral tracking shooting and atmospheric electric field early warning multi-modal data, a lightning track is accurately detected, and by combining forest environment information, accurate early warning of a single tree where a lightning fire may occur is achieved.

The invention discloses a vibration stress monitoring method for a wireless telemetering rotary transmission system. The method comprises the following steps: S1, collecting multi-dimensional vibration acceleration data of the rotary transmission system in real time; s2, performing signal conditioning on the multi-dimensional vibration acceleration data output by the vibration acceleration sensor through a signal conditioning circuit; s3, generating a vibration signal data packet with a timestamp and a sensor identifier; s4, dynamically adjusting a data transmission frequency band according to the environment interference condition; s5, automatically generating a normal working state reference model of the rotary transmission system, wherein the normal working state reference model covers feature distribution of the multi-dimensional vibration acceleration data under different working conditions; s6, generating abnormal vibration characteristic data; and S7, storing the abnormal vibration characteristic data in a vibration data storage module of the mobile terminal, and sending an alarm signal to an operator through an alarm module. According to the invention, the defects of vibration signal acquisition, transmission, processing and environmental adaptability in the prior art are overcome.

The invention discloses a circuit and a method for ultrasonic flow detection, the method is a signal processing method, a system main controller is provided with a double-path driving channel and a double-path ADC acquisition channel, and a switching circuit and a signal conditioning path are dynamically controlled by a microcontroller, so that the flow of ultrasonic flow is detected. Through a real-time noise correction and self-calibration mechanism running in parallel with signal acquisition, a circuit system comprises a microcontroller, a switching circuit A1, a switching circuit A2, a driving signal conditioning circuit, a receiving signal conditioning circuit, a band elimination filter circuit and ultrasonic probes Y1 and Y2, multi-channel cooperative work and error compensation are realized; through a two-way switching architecture, a switching strategy and a dynamic calibration mechanism, the problems of zero drift accumulation, environmental noise interference and difficult calibration circuit signal deviation existing in a traditional single-channel design are effectively solved, and the precision, stability and environmental adaptability of flow measurement are remarkably improved.

According to the TENG-based self-powered sensing system and the sleep wake-up method thereof provided by the invention, through cooperation of the composite nano generator and the low-power-consumption Internet of Things technology, energy can be effectively collected in an all-weather manner, and acceleration data can be collected; the composite nanometer generator is formed by compactly combining a contact separation type friction nanometer generator and a solar cell, the space utilization rate is improved, and sunlight and mechanical vibration are used as energy sources. The friction nanometer generator is designed in a spring supporting mode, so that the durability is improved; the signal conditioning circuit is divided into two parts, one part is used for collecting and storing energy so as to realize self power supply; the other part is used for transmitting information carried by vibration so as to realize wake-up triggering of the low-power-consumption acceleration sensor; the system can realize self-powered and all-weather vibration monitoring, can be gradually applied to the fields of bridge health monitoring, air conditioner fan monitoring, iron tower monitoring and the like, and lays a solid foundation for realizing an IOT-based digital building technology in the future.

The invention discloses a pulsed neutron generator control system based on LabVIEW, and the system comprises a neutron generator industrial personal computer which operates a virtual human-computer interaction interface developed based on LabVIEW; the console core board carries a DSP main control chip and is embedded into a real-time operating system; the driving sampling board is connected with the console core board and is integrated with a signal conditioning circuit; the neutron generator industrial personal computer communicates with the console core board through a Modbus protocol, and controls and drives the sampling board to output control signals of the three independent power supply ion sources, the storage and the acceleration pole to the neutron tube; wherein the console core board generates three paths of PWM signals with the PWM frequency of 2.5 kHz and the step length of 8191, and the three paths of PWM signals are converted into analog control signals through the driving sampling board. According to the control system, the PWM control precision is greatly improved, the voltage control precision is improved to 0.012% (100% higher than that of a conventional scheme) through the combination of the 8191 step length (13-bit resolution) and the 2.5 kHz frequency, and the neutron yield fluctuation is controlled within + / -1.5%.

The invention discloses a micro-water density monitoring method and system based on multi-sensor fusion compensation, and relates to the field of power equipment safety. According to the micro-water density monitoring method based on multi-sensor fusion compensation, parameters are collected in real time through a micro-water collector composed of a ceramic heater, a humidity-sensitive capacitor collection sheet, a dew point sensor, a pressure sensor and a temperature sensor; a signal conditioning circuit and an analog-to-digital conversion module are integrated by adopting a four-layer PCB (Printed Circuit Board), and the micro-water collector is heated for multiple times by a main controller; carrying out digital filtering processing, cross validation operation and operation of eliminating influence of environment temperature on the acquired parameters; the measurement precision is improved through a sensor self-calibration mechanism, finally standardized micro-water density data are output, and an early warning function is triggered based on a multi-level threshold value. According to the invention, the problems of low precision and poor reliability of the measured micro-water density in the prior art are solved. Therefore, the accuracy of micro-water density measurement under complex working conditions is effectively improved, and data support is provided for predictive maintenance of intelligent equipment.

The invention relates to a composite low-power-consumption combustible gas sensor system, which comprises a sensor PCBA2, and the sensor PCBA2 comprises an MCU main control circuit used for carrying out data analysis on a sensor; the MCU power supply circuit is used for providing a stable power supply for the MCU circuit; the semiconductor sensor power supply circuit provides a stable power supply for the semiconductor sensor; the semiconductor sensor signal conditioning circuit is used for conditioning a semiconductor sensor signal into a voltage signal which can be effectively measured; the catalytic sensor power supply circuit provides a stable power supply for the catalytic sensor; and the catalytic sensor signal conditioning circuit is used for conditioning a catalytic sensor signal into a voltage signal which can be effectively measured. With the adoption of the composite low-power-consumption combustible gas sensor system, the requirements of detection precision and low power consumption are mainly met, battery power supply and concentration display can be realized at low cost, and the power consumption of a product can be effectively reduced, so that a combustible gas detector powered by a battery can be realized at relatively low cost; the blank of the scheme in the current market is filled.

The invention discloses a sensor array acquisition system for detecting gas, and relates to the field of gas sensors. The sensor array acquisition system for detecting gas comprises a gas sensor array, a signal conditioning circuit, an analog-to-digital conversion module, a control module and a power supply module. According to the sensor array acquisition system for detecting the gas, the voltage follower circuit with high input impedance is adopted, so that the problem of attenuation during signal acquisition of a high-impedance sensor is effectively solved, and the signal acquisition precision is improved. Through the adjustable direct-current bias circuit and the differential amplification circuit, the dynamic adjustment of the measurement range is realized, the gas detection requirements of different concentration ranges can be met, and hardware does not need to be replaced. A constant-current driving chip is adopted to control a sensor heating circuit, heating current can be accurately set by adjusting external resistance, it is ensured that the sensor works at the optimal temperature, and the stability and response speed of the sensor are improved.

The invention relates to the technical field of on-line health monitoring of wide bandgap semiconductor power devices, and discloses an on-line gate leakage current monitoring method and system for a GaN power device, and the method comprises the steps: extracting an average gate driving current which is within a complete switching period, an average value of instantaneous currents flowing into or out of the gate of the GaN power device; and on the basis of the average gate driving current, gate leakage current is obtained, so that online gate leakage current monitoring of the GaN power device can be carried out. The system corresponds to the method. According to the invention, the core problem that the traditional voltage detection method is insufficient in resolution and cannot realize early warning is fundamentally solved; meanwhile, a source electrode series sampling and non-intrusive signal conditioning circuit is adopted, a switch and a voltage stabilizing circuit are prevented from being introduced into a grid electrode driving loop, and therefore interference on parasitic parameters of the grid electrode loop is eliminated, and feasibility and reliability of application in a high-frequency and high-sensitivity GaN power device are ensured.

The invention discloses a charging over-temperature detection system and method for a direct-current charging gun, and relates to the technical field of direct-current fast charging, and the system comprises a temperature collection module, a signal conditioning circuit module, a micro-control module, a power regulation module and a control execution module. According to the invention, the stable charging power is maintained, and the temperature of the charging gun is kept in a reasonable range, so that the problems of resistance increase, limited charging power and the like caused by over-temperature are avoided, the relatively stable charging power is maintained, the prolonging of charging time is reduced, the energy utilization rate is improved, and the charging efficiency is improved by reasonably controlling the temperature of the charging gun. Energy loss caused by overheating is reduced, the utilization rate of energy is improved, and the charging process is more efficient and energy-saving; potential safety hazards such as insulation performance reduction, part damage short circuit and thermal runaway caused by overheating can be effectively prevented, accidents such as fire disasters and electric shock are avoided, the safety of users and equipment is guaranteed, and the service life of a battery is prolonged.

The invention discloses a goaf coal spontaneous combustion early warning system which comprises a plurality of temperature sensors and a plurality of gas detectors arranged in a goaf, and the gas detectors are used for detecting gas components in the goaf; the data acquisition module is connected with the temperature sensor and is used for acquiring temperature data; meanwhile, the data acquisition module is connected with the gas detector and is used for acquiring gas component data; the data acquisition module comprises a signal conditioning circuit and is used for amplifying and filtering an electric signal output by the temperature sensor; the data acquisition module further comprises an A / D converter used for converting an analog signal into a digital signal; the processing module is connected with the data acquisition module and is used for processing the temperature data and generating an early warning signal; the processing module is also used for processing the gas component data and generating an early warning signal in combination with the temperature data; and the early warning module is connected with the processing module and is used for receiving the early warning signal and sending out early warning information. The method has the effect of timely and accurately carrying out early warning on coal spontaneous combustion in the goaf.

The invention discloses a parameter measuring device and method of an optical switch and optical communication equipment, and relates to the technical field of optical switch measurement, and the parameter measuring device of the optical switch comprises an optical path module, a signal conditioning circuit, a driving module, a signal acquisition module and an upper computer. The optical path module converts the optical signal into a current signal; the signal conditioning circuit conditions the signal into a voltage signal and amplifies the voltage signal; the driving module provides a driving signal and a synchronous triggering signal; the signal acquisition module acquires a voltage signal based on the trigger signal; the upper computer calculates performance parameters of the optical switch according to the voltage signals acquired for multiple times, wherein the performance parameters at least comprise two items of insertion loss, extinction ratio, switching time and the like; according to the technical scheme, one-key measurement of performance parameters such as insertion loss, extinction ratio, switching time, polarization-dependent loss, insertion-dependent loss and repeatability of the optical switch can be realized, meanwhile, the measurement cost of the optical switch is reduced, and the test efficiency and accuracy are improved.

The invention relates to the technical field of signal processing, in particular to a microseismic sensor front-end signal conditioning circuit based on lag correction frequency expansion. The microseismic sensor front-end signal conditioning circuit based on lag correction frequency broadening comprises a differential amplification circuit used for converting a differential signal input by a microseismic sensor into a single-ended vibration signal and carrying out pre-amplification processing on the vibration signal according to a preset gain to obtain an amplified vibration signal; and the filtering and lag correction circuit is used for widening the frequency range of the amplified vibration signal in a filtering and lag correction mode to obtain a conditioned vibration signal. According to the invention, frequency expansion can be carried out on the magnetoelectric sensor through a low-frequency compensation technology, and the response capability of the magnetoelectric sensor to a low-frequency signal is improved.

The invention relates to a flexible measuring device for direct current large current measurement. The flexible measuring device comprises an integrated flexible non-contact current probe, a signal conditioning circuit and a signal processing unit, the integrated flexible non-contact current probe comprises a flexible magnetic core, and a magnetic measuring element and a temperature measuring element are integrated in the flexible magnetic core. After an output signal of the integrated flexible non-contact current probe passes through the signal processing unit, an analog signal in linear relation with a to-be-detected current and a digital signal of the to-be-detected current are output; the invention has the advantages of high precision, wide frequency band, low cost, excellent sensitivity and anti-interference capability, and improved measurement precision.

The utility model belongs to the field of fluid mechanical performance testing, and particularly discloses a water pump or hydroelectric generating set operation performance testing device which comprises an acquisition module and a testing module, the acquisition module comprises a power supply unit, a signal conditioning circuit and a data acquisition card, and the power supply unit is packaged by a sensor group and a portable interface box. The interface box and the sensor group are connected through phoenix wiring terminals, so that each path of sensor forms an independent signal channel, the test module comprises a calibration module, a test module, a sorting module and a signal analysis module, the calibration module comprises calibration optical cables connected with the signal channels in a one-to-one correspondence manner, and the calibration optical cables are connected with the signal channels in a one-to-one correspondence manner. The test module comprises an online monitoring unit, a test unit and a test recording unit, the sorting module is used for obtaining effective test data from the test recording unit, and the signal analysis module comprises a time domain analysis module and a frequency domain analysis module and is used for drawing various data charts for the effective test data. According to the utility model, the unit test process is simplified, and the error probability is greatly reduced.

The invention provides an isolating switch performance monitoring system, which comprises a data acquisition module which at least comprises a current sensor and a signal conditioning circuit and is used for acquiring action current signals of a driving motor in an isolating switch in real time; the data processing module is used for performing filtering, noise reduction and time domain and frequency domain feature extraction on the received action current signal of the driving motor and establishing a corresponding waveform database according to the extracted features, and the waveform database at least comprises a normal waveform database and an abnormal waveform database; and the state evaluation module is used for comparing the real-time waveform with the reference waveform in the waveform database through a preset algorithm, identifying abnormal feature points existing in the real-time waveform and generating a corresponding performance evaluation result. Precise evaluation of the performance of the isolating switch is realized based on the current waveform of the driving motor.

The invention provides a single-electrode silica gel sheet test circuit, device and method for physical therapy. The single-electrode silica gel sheet test circuit comprises a microcontroller, a Darlington tube array chip circuit, a relay array, a signal conditioning circuit and the like. The microcontroller controls the Darlington array to amplify low-power signals, drives the relay array to achieve selection of different test paths, collects and processes test data, and transmits the test data to the computer through a serial port. The relay array alternately switches paths to complete each test item; the signal conditioning circuit is used for adjusting a test signal to meet the AD sampling requirement; the digital control analog switch realizes multiplexing of multiple paths of signals, and a single AD port acquires multiple paths of signals; and the state indicating circuit displays the test result and gives an alarm prompt. The system is specially used for a single electrode plate test scheme, the installation complexity can be remarkably reduced, the stability is improved, and the efficiency is greatly improved.

The invention discloses a self-adaptive control method and system for a photoelectric sensor in an extreme environment, and the method comprises the steps: calculating a signal energy sequence; generating an energy attenuation curve, and detecting an energy abrupt change point; dividing an environment response interval; calculating a fluctuation range; determining dominant environment parameters; extracting change trend characteristics, and determining a reverse compensation trend; setting a compensation parameter of the signal conditioning circuit based on the reverse compensation trend, and performing compensation control on the signal conditioning circuit by using the compensation parameter; recalculating an energy attenuation curve of the compensated signal sequence segment to obtain a compensation energy abrupt change point; when the number of the compensation energy abrupt change points is smaller than that of the energy abrupt change points, the current dominant environment parameters and the compensation parameters are written into an environment parameter priority table; and when the number of the compensation energy abrupt change points is not less than the number of the energy abrupt change points, selecting the environment parameter with the second large fluctuation range as the dominant environment parameter. According to the invention, the detection precision of the photoelectric sensor in an extreme environment is improved.

A method and apparatus for an angle meter cooperatively using two or more non-contact distance meters for measuring distances to a surface along substantially parallel lines. The measured distances are used for estimating or calculating the angle to the surface and the distance to the surface. The distance meters may use optical means, where a visible or non-visible light or laser beam is emitted and received, acoustical means, where an audible or ultrasound sound is emitted and received, or an electro-magnetic scheme, where radar beam is transmitted and received. The distances may be estimated using a Time-of-Flight (TOF), homodyne or heterodyne phase detection schemes. The distance meters may share the same correlator, signal conditioning circuits, or the same sensor. Two or more angle meters may be used defining parallel or perpendicular measurement planes, for measuring angles between surfaces, and for estimating physical dimensions such as length, area or volume.

The invention relates to the technical field of monitoring optimization, and discloses an optimization method and system for a power equipment inclination monitoring device based on low power consumption, and the method comprises the steps: obtaining the output signal amplitude of an inclination angle sensor and the input common-mode voltage range of an operational amplifier, and calculating the inclination angle of the inclination angle sensor according to the output signal amplitude, the input common-mode voltage range and the standard parameters of the operational amplifier; selecting a plurality of candidate operational amplifiers from the plurality of operational amplifiers; testing the performance of each candidate operational amplifier by adopting an operational amplifier test circuit to obtain operational amplifier performance parameters, and selecting a preferred operational amplifier from the candidate operational amplifiers according to the operational amplifier performance parameters; the first-choice operational amplifier is integrated into the signal conditioning circuit, the structure of the signal conditioning circuit is optimized according to the power consumption characteristic of the first-choice operational amplifier, and self-adaptive power consumption control is performed on the signal conditioning circuit by adopting a preset algorithm. According to the invention, device selection and circuit optimization are carried out through comprehensive analysis, the overall power consumption of the monitoring device is effectively reduced, and the operation stability of the monitoring device is improved.

The invention relates to a self-compensating contact resistance on-line monitoring device and method in a high-temperature environment, and the device comprises a contact point which is used for forming a contact resistance to be measured; the thermocouple is used for monitoring the temperature in the high-temperature box in real time; the constant current source system is used for applying a constant test current to the contact point and dynamically adjusting an output current value; the signal conditioning circuit is used for filtering high-frequency interference in the voltage signal; the data acquisition card is used for acquiring voltage signals at high speed; and the processor is used for calculating the real value of the compensated contact resistance. The LSTM network based on Kalman filtering and physical constraint has the beneficial effects that in the LSTM network based on Kalman filtering and physical constraint, the KF outputs the denoised base value state in real time through dynamic fusion observation value and model prediction, and clean input is provided for the LSTM. The LSTM models a temperature-resistance nonlinear relation based on a denoising result of the KF, and makes up for a linear hypothesis defect of the KF.

The invention relates to the technical field of power sources, and provides a power source control system, which comprises a signal source interface, a signal conditioning circuit, a power transmitter, a voltage control circuit and a controller, the signal source interface, the signal conditioning circuit and the power transmitter are connected in sequence, the power transmitter is connected with the voltage control circuit, and the voltage control circuit is connected with the controller; the signal source interface is used for receiving an external signal sent by an external signal source; the signal conditioning circuit is used for performing signal amplification and gain adjustment on an external signal to obtain a power amplification signal; the power transmitter is used for converting the power amplification signal into a radio frequency signal and transmitting the radio frequency signal; the controller is used for controlling the voltage control circuit to adjust the output voltage of the radio frequency signal according to a first voltage value corresponding to the radio frequency signal and a second voltage value when the radio frequency signal is transmitted last time. By adjusting the output voltage of the radio frequency signal, the output voltage is matched with the radio frequency signal, and the signal transmission quality and transmission efficiency are improved.

The embodiment of the invention discloses a power converter and a control method thereof, relates to the technical field of energy, and solves the problem of how to accurately judge whether an arc fault breaker works normally or not. Specifically, in the power converter, a controller is used for outputting a pulse signal. The noise signal conditioning circuit is used for receiving the pulse signal and outputting a noise signal according to the pulse signal. The current transformer is used for receiving and sampling the noise signal so as to output a sampling signal. The sampling signal conditioning circuit is used for receiving the sampling signal and outputting a conditioning signal according to the sampling signal. The controller is further used for controlling the power conversion circuit to start working under the condition that the absolute value of the difference between the frequency of the conditioning signal and the frequency of the pulse signal is smaller than or equal to a frequency threshold value and the gain of the conditioning signal is larger than or equal to a gain threshold value corresponding to the frequency of the pulse signal.