33results about How to "Overcoming frequency" patented technology

The invention discloses a microfluidic chip system integrating cell sorting and detection. The system comprises a microfluidic chip, a high-frequency lock-in amplifier and a processor, wherein the microfluidic chip is formed by aligning and packaging a flow channel layer, an electrode layer, a substrate layer and a PCB (printed circuit board) in sequence; a cell sorting spiral flow channel, a detection main flow channel and a retraction flow channel are formed in the flow channel layer; the retraction flow channel is aligned to a planar metal electrode of the electrode layer; liquid electrode structures are formed on two sides of the main flow channel; an electrode of the electrode layer forms a differential high-frequency impedance measurement circuit together with the high-frequency lock-in amplifier through a power amplification circuit and an I/V conversion circuit of the PCB to realize differential detection of cell alternating-current impedance. The system can realize the integration of rare cell sorting and representation function, improves the integrity and accuracy of a cell detection technology, and can be widely used in the fields of rare cell biological study, early disease diagnosis and treatment and the like.

The invention discloses a system and method for transmitting a terahertz radar signal based on digital pre-distortion. The system comprises a radar signal generation module, a clock control module, a digital pre-distortion module, a digital up-conversion module, a digital-to-analog conversion module, a frequency mixing module, a terahertz frequency doubling power amplification module and a radar antenna. The method comprises the steps of receiving data, updating a weight coefficient, obtaining a non-linear compensation signal, obtaining a digital up-conversion signal, obtaining a radio-frequency signal, conducting frequency doubling amplification, and transmitting a terahertz signal. By the adoption of the digital pre-distortion module, non-linear compensation is carried out on a digital baseband signal at the front end of a terahertz radar, and the performance of the terahertz radar transmission system is improved. The digital pre-distortion method is achieved by the adoption of a high-speed field programmable gate array, and the effective bandwidth and the spectral efficiency of the signals are improved.

The invention relates to an inverter parallel control method based on controllable virtual impedance. The method comprises the steps that (S1) datum reference frequency omega co and a feedback inverter capacitor voltage Vfil generate a reference voltage amplitude angle theta i through a phase-locked loop module; (S2) a reference voltage Vref is obtained through the reference voltage amplitude angle theta i and a datum reference amplitude Eco; (3) state quantity J(s) is obtained after the feedback inverter capacitor voltage Vfil is subtracted from the reference voltage Vref through a PI controller; (S4) after an output current feedforward value beta Isp is subtracted from the state quantity J(s), feedback compensation is carried out through the inverter capacitor voltage, and a current Ip is then obtained through a P controller; (S5) after an output current Isp is subtracted from the current Ip, the inverter capacitor voltage Vfil is obtained through a filter controller; (S6) equivalent virtual impedance Z0 is obtained, output impedance is adjusted according to a formula, and output currents of multiple parallel inverters are made to be balanced. Compared with the prior art, the output impedance of the inverters is accurate and controllable, and balanced operation of the inverters of a parallel system is achieved.

The invention discloses a device for optically generating radar pulse compression signals. The device comprises a laser, a coding signal generator, a microwave signal generator, a polarization multiplexing double-parallel Mach-Zehnder modulator, a direct-current power supply, a photoelectric detector, a polarizer and a polarization controller; and, by utilization of the frequency-shifting characteristic and the phase modulation characteristic of the polarization multiplexing double-parallel Mach-Zehnder modulator, after being coupled through the polarizer, polarization orthogonal modulated optical carrier signals and unmodulated optical first-order sideband signals output by the polarization multiplexing double-parallel Mach-Zehnder modulator are detected through the photoelectric detector, so that phase coded or linearly frequency-modulated radar pulse compression signals can be generated. On the basis of the integrated modulator structure, the device disclosed by the invention is simple in system composition and steady in performance; and, the following disadvantages can be overcome: the traditional manner of generating pulse compression signals in the electric domain is limited by the rate and the bandwidth of an electronic device; high-frequency signals are generated difficultly or cannot be generated; the time-bandwidth product is limited; the reconfigurability and the frequency adjustability of the system are poor, etc.

The invention relates to a method and device which achieves skin moisture measurement with the help of bioelectrical impedance spectroscopy, in particular to a method and device for the skin moisture measurement. According to the method and device for the skin moisture measurement, electrical impedance values of the skin on multiple frequency points are measured through electrodes contacted with the skin of the human body, measurement results are converted into a complex impedance spectroscopy curve graph, and the complex impedance spectroscopy curve graph is displayed on a display screen of an instrument. According to the smooth condition of an impedance spectroscopy curve, kernel parameters are given out, and corresponding skin moisture content is calculated according to the kernel parameters. The method can simultaneously provide the electrical impedance spectroscopy curve and the skin moisture content obtained through calculation for users. According to the method and device for the skin moisture measurement, the measurement range of the skin moisture content is made to be expanded to the condition that the skin is quite dry, and given results are more visual and more dependable.

The invention discloses an integrative ultrasonic spray pyrolysis large-area wide-temperature zone coating device, comprising a frame, an air tank and an infusion pump arranged on the frame. A three-dimensional motion mechanism and a control module for controlling the three-dimensional motion mechanism to do three-dimensional motion are arranged above the frame. A temperature-controllable heating platform is arranged in the frame and under the three-dimensional motion mechanism. An integrative ultrasonic spray nozzle system capable of high-temperature coating is arranged between the heating platform and the three-dimensional motion mechanism and is toward the heating platform, and the infusion pump is communicated with the integrative ultrasonic spray nozzle system which is glidingly connected with the three-dimensional motion mechanism. Utilizing an integrative ultrasonic spray nozzle, the coating device solves the problems of high ultrasonic frequency, uneven gas spray and complex organization existing in the traditional ultrasonic spray mode. Utilizing a peripheral cooling gas nozzle, the coating device solves the problem that the integrative ultrasonic spray nozzle is usually used in low temperature and realizes high-temperature film formation.

The invention discloses an EMI filter module based on magnetic integration, which comprises a magnetic core, a common-mode inductance layer, a common-mode integrated inductance-capacitance structure, a leakage inductance layer and a differential-mode capacitor. The differential-mode capacitor is a laminated capacitor, and the common-mode inductance layer consists of a single-layer plane spiral coil. Since the laminated capacitor is used as the differential-mode capacitor, the invention reduces the requirements for the dielectric material in the differential-mode capacitor, and the dielectric material with good temperature, high frequency sensitivity but low dielectric constant can be used, thereby solving the problems of high temperature and high frequency due to the use of the material with the high dielectric constant in the prior art, and improving the performance stability of the EMI filter module; and since the single-layer spiral coil is used as the common-mode inductance layer, the invention reduces the size of the EMI filter module.

The invention relates to the technical field of metal ion wastewater and in particular relates to a method for treating complex metal ion wastewater. The method comprises the following steps: (1) enabling the wastewater to pass through a microfiltration treater at a high speed under the action of a high-pressure pump of 1.5-4.5MPa to separate out fresh water and concentrated water; (2) treating the fresh water separated in the step (1) by use of a nanofiltration membrane for further separation, and feeding the concentrated water into a filter pressing system for solid-liquid separation; (3) performing two-stage purification on the fresh water separated by the nanofiltration membrane by use of a reverse osmosis purifier, and performing repeated concentration on the concentrated water separated by the nanofiltration membrane in the step (2) by additionally arranging a precision filter device in front of a nanofiltration concentrator; and (4) extracting metal ions from the concentrated water separated by the nanofiltration membrane in the step (3) by use of the filter pressing system. The method for treating the complex metal ion wastewater has no requirement on addition of any chemical substance and is simple in process, and as a result, the extraction of the complex metal ions and the recycling of the water resource are well realized; the obtained purified water is up to the standards of drinking water.

The invention discloses a portable resistive leakage current detection device of an arrester. The portable resistive leakage current detection device comprises a measurement device and a handheld receiver, wherein the measurement device and the handheld receiver are connected through wireless communication; the measurement device comprises a measurement circuit; the measurement circuit comprises a current transformer circuit, a coupling voltage phase collection circuit, a signal processing circuit, a measurement device power supply circuit, a measurement device switching circuit, a measurement device microprocessor circuit, an alarm circuit, a work indication circuit and a measurement terminal radio frequency circuit; and the input end of the current transformer circuit is connected with an upper-end current measurement line and a lower-end current measurement line separately. A phase signal of voltage of a working transmission line of the arrester is obtained by using a capacitance effect formed between a copper-clad plate and a transmission line conductor in an electric field coupling non-contact manner, so that the phase signal of the working voltage of the arrester can be obtained simply and feasibly.

The invention discloses a plasma resonant power supply system based on adaptive power control. The system comprises mainly comprises a full bridge inverter circuit, a series and parallel resonant circuit, a filtering circuit, a transformer, a plasma load, a current sampling module, a voltage sampling module, a control system and a driving circuit. The invention provides an adaptive power control system, the control modes include a MODE1 mode and a MODE0 mode, and the two control modes can be switched freely according to a load state. In the MODE1 mode, a pulse signal frequency is constant, and a purpose of adjusting power is achieved through adjusting a pulse width. In the MODE0 mode, the pulse signal pulse width is constant, and a purpose of adjusting the power is achieved through adjusting the pulse frequency. In addition, according to the series and parallel resonant circuit provided by the invention, a direct current component can be effectively prevented from entering into the transformer and the output voltage of the inverter is converted into resonant series current and parallel voltage, thus the switching loss of a power tube is reduced, and the efficiency of the system is improved.

The invention provides a method for physically treating complexing metal ion wastewater. The method comprises the following steps: (1) directly pumping flexible electromagnetic shielding fabric wastewater or non-ferrous metal metallurgical wastewater or electroplating workshop surface water, cleaning water, flushing water and the like by virtue of a high pressure pump into a micro-filtration treater to be separated into fresh water and concentrated water; (2) separating the fresh water which is separated from the step (1) again by using a nano-filtration membrane, wherein the concentrated water enters into a concentration system for further concentration; (3) secondarily purifying the fresh water separated by nano-filtration concentration equipment in the step (2) by using reverse osmosis purification equipment, arranging a precise filter device to treat the concentrated water separated by the nano-filtration membrane in the step (2) before the nano-filtration concentration equipment is used for repeated concentration, and entering into a solar evaporation system for continuing to concentrate; and (4) electrolyzing a condensation body in the step (3) by adopting an electrolytic tank, extracting metals and returning a liquid to a raw water pond. The process overcomes the defects in the prior art, is simple in equipment, small in occupied area and free from chemical substances. By using a solar energy system, the complexing metal ions are extracted and water resources are recycled.

The invention discloses a high-speed radix-16 Montgomery modular multiplier VLSI (very large scale integrated circuit) which comprises N-numbered MMCell arithmetic elements, an FIFO (first in first out) storage unit and an alternative data selection unit. The high-speed radix-16 Montgomery modular multiplier VLSI overcomes the defects of low average behavior, low clock frequency, large hardware expenditure, poor practicability and the like in the prior art, thus achieving the advantages of high average behavior, high clock frequency, small hardware expenditure and good practicability.

The invention relates to the field of intelligent communication equipment, in particular to an intelligent sound box system with a telephone function, which comprises an intelligent sound box, an intelligent mobile terminal and a cloud server, the intelligent sound box comprises a Wi-Fi module, a microphone array, an MCU, an AEC module, an AGC module and an ANS module. The intelligent mobile terminal comprises an address book management module and a network distribution unit; the cloud server comprises a voice server, an address book management unit and a telephone number management unit; theWi-Fi module is connected with the network distribution unit for network distribution and can access the cloud server after accessing the home network router, and the intelligent mobile terminal address book management module uploads address book information to the cloud server address book management unit; the microphone array is used for pickup and monitoring a user instruction; and after receiving the instruction, the MCU can call the AEC module, the AGC module and the ANS module to process the audio data. The terminal equipment has the beneficial effects that a fixed-line telephone is replaced, the calling function is realized, the interaction function is also realized, and the convenient calling terminal equipment is provided.

The invention discloses a fluid machanical modulation frequency extraction method based on an energy kurtosis spectrum. The method comprises the steps: (1) collecting a monitoring signal of fluid machinery, and carrying out the signal noise reduction; (2) carrying out frequency band decomposition to obtain filtering signals of each frequency band; (3) calculating a shape factor and an energy factor of the filtering signal of each frequency band; (4) calculating an energy kurtosis spectrum of the filtering signal of each frequency band; (5) determining a target frequency layer according to a maximum criterion, and determining a plurality of filtering signals of the target frequency layer as target signals according to an average criterion; (6) calculating a square envelope spectrum of eachtarget signal, and further obtaining an average square envelope spectrum; (7) determining an observation frequency range, and selecting a reference value from an average square envelope spectrum in the observation frequency range; (8) capturing the characteristic frequency of the fluid machine from the average square envelope spectrum, and obtaining a corresponding signal representation ratio. According to the method disclosed in the invention, extraction and representation of the modulation frequency can be effectively realized under low signal-to-noise ratio and strong noise interference.

The invention relates to a photovoltaic-photothermal device. The photovoltaic-photothermal device comprises a bed frame, a water passing box fixed to the bed frame and heat collection pipes connectedwith the bed frame. Each heat collection pipe comprises a vacuum pipe body formed by an inner pipe and an outer pipe which are coaxially fixed, a heat absorption coating arranged on the pipe wall of the inner pipe in a coating manner, a heat conduction rod movably arranged in the inner pipe and connected with the inner pipe and aluminum foil. Each heat conduction rod comprises a heat conduction rod stretching-out end which stretches out of the corresponding inner pipe and is inserted into the water passing box. The heat conduction rod stretching-out ends are sealed and fixedly inserted into the water passing box. The vacuum pipe bodies are rotationally connected with the bed frame. Photovoltaic plates rotating along with the vacuum pipe bodies are fixedly connected to the radial outer sides of the vacuum pipe bodies. The photovoltaic plates are provided with photovoltaic work faces deviating from the heat collection pipes. By means of the device, photovoltaic power generation and photothermal heating are combined, the photovoltaic or photothermal work mode can be selected according to needs, and the utilization rate to solar energy can be improved.

The invention relates to a linear frequency modulation anchor rod detection receiving and sending integral sensor, which comprises a sensor casing, an acceleration signal receiver and a plurality of piezoelectric ceramic emitting arrays, wherein the piezoelectric ceramic emitting arrays are uniformly arranged on the bottom surface of the sensor casing in the circumferential direction; the acceleration signal receiver is arranged in the axis center of the bottom surface of the sensor casing; the sensor casing is used for being installed on the excitation surface of the exposed end part of the tested anchor rod; the signal input ends of the plurality of piezoelectric ceramic emitting arrays are used for accessing chirp signals; the signal output end of the acceleration signal receiver is thesignal output end of the linear frequency modulation anchor rod detection receiving and sending integral sensor. The linear frequency modulation anchor rod detection receiving and sending integral sensor has the advantages that the emitting frequency band is wide; the energy is great; the penetration power is high; the attenuation is small; the self relevance is good; the action distance is great; the detection is easy; the size is small and the control is easy.

The invention discloses a track circuit transmission characteristic quantitative evaluation method based on variational mode decomposition. According to the method, locomotive signals or track circuitinduction signals of a dynamic inspection vehicle are collected, transmission characteristics of a track circuit are obtained by using processing methods such as variational mode decomposition and the like, and then the transmission characteristics of the track circuit of each track section of the line are scored by an adaptive scoring function, so that visual quantitative evaluation of the transmission characteristics of the track circuit is completed. The method is good in applicability, and can meet the requirements for evaluating the transmission characteristic performance of the track circuit at present.

A filter which applies cascade analog birefringent module can achieve characteristcs of pass band and stop band with large flat width, high isolation degree and very small interval of spectral frequency by controlling rotation angle of polarization rotating disc and optical path of light in each analog birefringent module, of which two medias in each analog module are applied with materials of optical glass and electrooptical crystal separately. The adjustable filter which has low voltage-high tuning speed can be obtained by optimum-cutting the crystal and selecting structure of voltage being loaded.

The invention provides a breeding method of japonica hybrid rice sterile line in an early flowering stage. The breeding method can stably and efficiently obtain a large number of japonica hybrid ricesterile line materials in the early flowering stage, solves the problems of low frequency and high accidentality of traditional hybrid breeding methods, provides most critical material foundation andtechnical support for the development of hybrid rice, and has a good application prospect.

The invention relates to a signal control period division method based on trajectory data. The method comprises the following steps: S1, obtaining a relationship between the wave velocity and the flowof a concentrated wave based on a basic relationship among three parameters, namely a traffic wave theory, a Green-Hilbert linear model and a flow density velocity; S2, superposing the trajectory data of the same intersection in the same time period of multiple days to obtain input data; S3, based on the input data, a speed threshold division method and a kinetic equation, obtaining the wave velocity of the concentrated wave; and S4, clustering the wave velocity of the concentrated wave, and dividing a signal control time period based on the relationship between the wave velocity of the concentrated wave and the flow. Compared with the prior art, the operation efficiency and the safety level of the signal control intersection are improved, and the installation and maintenance cost of a fixed detector is reduced.

The invention discloses a method and a device for generating ultrashort pulses with high pulse repetition frequency on the basis of graphene microcavity mode locking. A graphene microcavity with high nonlinearity, narrow linewidth, larger free spectral range, larger modulation depth and small non-saturable absorption loss is adopted, the repetition frequency of the pulses is increased with a four-wave mixing effect of filtering, the stability of mode-locked pulses is improved through combination with a saturable absorber for inhibiting spontaneous radiation noise and narrowing pulse width, and pulse signals with hundreds of GHz of repetition frequency, hundreds of fs of pulse width and low jitter are generated. Implementation of laser promotes development of optic fiber laser with high pulse repetition frequency and low pulse width.

The invention discloses an active and passive hybrid mode-locked optical fiber laser with a temperature compensation function, and belongs to the technical field of optical communication devices. The main structure comprises an active mode-locked optical fiber layer resonant cavity, a temperature compensation system, a passive mode-locked optical fiber laser system and a pulse optimizing system, wherein the active mode-locked optical fiber layer resonant cavity is formed by a pumping light source (1), a wavelength-division multiplexer (2), a first optical coupler (3), an adjustable optical fiber filter (4); the temperature compensation system is formed by absolute ethyl alcohol filled photonic crystal fiber (27), a third optical probe (28) and a second amplifying circuit (29); the passive mode-locked optical fiber laser system is formed by dispersion compensation optical fiber (22) and a black phosphorus saturable absorber (21); the pulse optimizing system is formed by two feedback control rings. Active and passive hybrid mode locking is adopted, a feedback technology is used for conducting automatic feedback control over active and passive hybrid mode-locked optical fiber laser systems, the optical fiber laser has the temperature compensation function, and optical pulses in the system can be optimized better and stable.

The aviation radio signal source disclosed by the invention is high in precision, short in conversion time, stable, reliable and high in practicability. According to the technical scheme, a microcomputer control module writes a program code according to a communication protocol and sends instructions of a working mode, a working state and a frequency point code and various generated control signals to a frequency synthesizer through a bus, the frequency synthesizer obtains output frequencies of a first local oscillator and a second local oscillator based on a direct digital synthesizer (DDS) and a phase-locked loop (PLL), and the output frequencies of the first local oscillator and the second local oscillator are transmitted to the frequency synthesizer. The frequency synthesizer generates a corresponding frequency control code to obtain a wave band control code and a corresponding control signal, the signal is processed by the radio frequency signal conditioning circuit and then is output to the to-be-tested equipment, an excitation signal required by the to-be-tested equipment is realized, each frequency value and amplitude required by an aviation radio station are provided, and by setting the hopping speed of frequency hopping, the frequency of the to-be-tested equipment is adjusted. And debugging and testing conventional indexes of the aeronautical radio station for data transmission of the frequency synthesizer, enabling control of frequency conversion and frequency hopping and code word conversion.

The invention discloses a two-stage vibration isolation buffer, and belongs to the technical field of vibration isolation buffers. The problems that an existing vibration isolation buffer is low in energy conversion rate and longitudinal impact resistance are solved. The lower portion of a connecting end cover is arranged between two cylinder bodies and fixedly connected with the second-stage cylinder body, the upper portion of the connecting end cover is inserted into the first-stage cylinder body and fixedly connected with the inner wall of the first-stage cylinder body, a piston is arrangedin the first-stage cylinder body in an up-down sliding mode, and the upper portion of the piston penetrates through the first-stage cylinder body and is fixedly connected with a guide cylinder; and acomposite membrane is fixedly clamped between the connecting end cover and the second-stage cylinder body and attached to the inner wall of the connecting end cover, the upper surface of the middle of the composite membrane is attached to the bottom of the piston, and the composite membrane, the connecting end cover and the first-stage cylinder body form a closed first-stage cavity. Two closed cavities which are isolated from each other are formed, energy consumption and energy storage are achieved at the same time, and on the basis of a molecular spring, the problem that low inherent frequency and small static deformation cannot be achieved at the same time under heavy loads is solved in combination with the working principle of the energy consumption type vibration isolation buffer.

The invention discloses an EEG time-sharing frequency spectrum Riemannian-based semantic visual image classification method and device. The method comprises the steps: designing an experiment normal form, collecting the electroencephalogram data of a subject through an electroencephalogram collection device, and carrying out corresponding preprocessing; dividing the preprocessed data into different data sets according to time periods, performing Fourier transform on the data sets in different time domains to obtain frequency domain features of the data sets, and extracting Riemannian space domain features from the frequency domain features of the data sets in the frequency domain; and splicing the Riemannian space domain features of different time periods, selecting final m-dimensional features from the spliced Riemannian space domain features through feature selection, classifying the selected final m-dimensional features, and judging the classification accuracy of the semantic visual image through a classification result. The device comprises a processor and a memory. According to the invention, the classification accuracy of visual stimulation among different semantics is improved by extracting the time domain, frequency domain, spatial domain and other features of the VEP component and the N400 component.

The invention provides a polarization stabilizing type polarization controller, a power stabilizing method and a polarization state adjusting method. The controller is characterized in that light output by an external optical fiber is changed into control light through a first collimator, sequentially passes through a first polarization state control unit and a polarizer, enters a beam splitter and then is divided into two paths, one path of the light sequentially passes through a second polarization state control unit and a second collimator to be connected with external output; and the other path of light enters a photoelectric detector, and the controller is connected with the photoelectric detector, the first polarization state control unit and the second polarization state control unit through a first cable, a second cable and a third cable respectively. The polarization state is maintained through the polarizer, the influence of factors such as large fluctuation amplitude or frequency of the polarization state of the input light can be overcome without any operation, efficient stable polarization is maintained, and the problem that the polarization state can only be maintained in a specific interval in the prior art can be solved.

The invention discloses a low-power consumption detection structure, which comprises an ultrasonic detector and a frequency modulation circuit matched with the ultrasonic detector. The low-power consumption detection structure can overcome the defects of low transmitting frequency, high power consumption, energy waste and the like in the prior art so as to achieve the advantages of high transmitting frequency, low power consumption and energy conservation.

The invention discloses a method for reducing the grinding belt fault. The method comprises the following steps: a, shaping an iron sheet to be designed on the belt roller site, processing and mounting a new induction iron sheet, and ensuring that the effective induction time is above a standard valve, namely 0.2 second; b, additionally arranging an isolation circuit on a DCS (Distributed Control System) cabinet and protecting an FM136 input module terminal; c, selecting sensors with alarm setup functions in the control cabinet and on the site, changing a signal transmission mode of the sensor, reducing the damage of an FM136 module and the sensors. According to the method for reducing the grinding belt fault, disclosed by the invention, the defects of short effective induction time, low reliability, too high flash frequency and the like in the prior art can be overcome so as to realize the advantages of long effective induction time, high reliability and low flash frequency.

The invention provides a microgrid energy storage capacity configuration method based on an improved fruit fly algorithm, and the method mainly comprises the steps: firstly selecting a super capacitorand a storage battery through analysis according to different capacity requirements of designed energy storage equipment, and forming mixed energy storage equipment; secondly, establishing a corresponding multi-objective function by taking minimization of energy storage cost, renewable energy output fluctuation and storage battery charging and discharging power fluctuation as objectives, settingconstraint conditions, and establishing a microgrid energy storage optimization model; then, adopting an improved fruit fly optimization algorithm, considering the adaptive step length, the search speed and precision, utilizing a group average position correction position updating strategy to prevent falling into local optimum, and selecting a fuzzy model recognition method to select an optimal compromise solution; and finally, determining an annual energy storage capacity configuration scheme by adopting a kernel density estimation method according to the difference of energy storage requirements in different seasons. According to the invention, the charging and discharging times of the storage battery are reduced, and higher economic benefits are obtained while three objectives are takeninto consideration.

The invention relates to a universal self-adaptive wave trapper, and belongs to the technical of the electrical variable measurement. The defect that the detection performance is affected by input signal frequency and amplitude can be overcome at the same time by modifying and improving the existing self-adaptive wave trapper, and the self-adaptive wave trapper has relatively simple structure andis used for the extraction of electric signal information in an electric system, the frequency, the amplitude, the phase angle and like information can be accurately monitored in real time, thereby mastering the operational status of the system; and meanwhile, the extracted information can be used for electric energy quality detection, relay protection and like aspects, thereby improving the intelligent, the comprehensive and digital level of a transformer substation; compared with the traditional ANF, the universal ANF has more extensive application range, and can be used as an electric signal detection unit to be applied to the electric system besides the conventional electric system.